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[thirdparty/grsecurity-scrape.git] / test / grsecurity-3.0-3.15.4-201407072046.patch
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8e37608e
PK		 1diff --git a/Documentation/dontdiff b/Documentation/dontdiff
2index 9de9813..1462492 100644
3--- a/Documentation/dontdiff
4+++ b/Documentation/dontdiff
5@@ -3,9 +3,11 @@
6 *.bc
7 *.bin
8 *.bz2
9+*.c.[012]*.*
10 *.cis
11 *.cpio
12 *.csp
13+*.dbg
14 *.dsp
15 *.dvi
16 *.elf
17@@ -15,6 +17,7 @@
18 *.gcov
19 *.gen.S
20 *.gif
21+*.gmo
22 *.grep
23 *.grp
24 *.gz
25@@ -51,14 +54,17 @@
26 *.tab.h
27 *.tex
28 *.ver
29+*.vim
30 *.xml
31 *.xz
32 *_MODULES
33+*_reg_safe.h
34 *_vga16.c
35 *~
36 \#*#
37 *.9
38-.*
39+.[^g]*
40+.gen*
41 .*.d
42 .mm
43 53c700_d.h
44@@ -72,9 +78,11 @@ Image
45 Module.markers
46 Module.symvers
47 PENDING
48+PERF*
49 SCCS
50 System.map*
51 TAGS
52+TRACEEVENT-CFLAGS
53 aconf
54 af_names.h
55 aic7*reg.h*
56@@ -83,6 +91,7 @@ aic7*seq.h*
57 aicasm
58 aicdb.h*
59 altivec*.c
60+ashldi3.S
61 asm-offsets.h
62 asm_offsets.h
63 autoconf.h*
64@@ -95,32 +104,40 @@ bounds.h
65 bsetup
66 btfixupprep
67 build
68+builtin-policy.h
69 bvmlinux
70 bzImage*
71 capability_names.h
72 capflags.c
73 classlist.h*
74+clut_vga16.c
75+common-cmds.h
76 comp*.log
77 compile.h*
78 conf
79 config
80 config-*
81 config_data.h*
82+config.c
83 config.mak
84 config.mak.autogen
85+config.tmp
86 conmakehash
87 consolemap_deftbl.c*
88 cpustr.h
89 crc32table.h*
90 cscope.*
91 defkeymap.c
92+devicetable-offsets.h
93 devlist.h*
94 dnotify_test
95 docproc
96 dslm
97+dtc-lexer.lex.c
98 elf2ecoff
99 elfconfig.h*
100 evergreen_reg_safe.h
101+exception_policy.conf
102 fixdep
103 flask.h
104 fore200e_mkfirm
105@@ -128,12 +145,15 @@ fore200e_pca_fw.c*
106 gconf
107 gconf.glade.h
108 gen-devlist
109+gen-kdb_cmds.c
110 gen_crc32table
111 gen_init_cpio
112 generated
113 genheaders
114 genksyms
115 *_gray256.c
116+hash
117+hid-example
118 hpet_example
119 hugepage-mmap
120 hugepage-shm
121@@ -148,14 +168,14 @@ int32.c
122 int4.c
123 int8.c
124 kallsyms
125-kconfig
126+kern_constants.h
127 keywords.c
128 ksym.c*
129 ksym.h*
130 kxgettext
131 lex.c
132 lex.*.c
133-linux
134+lib1funcs.S
135 logo_*.c
136 logo_*_clut224.c
137 logo_*_mono.c
138@@ -165,14 +185,15 @@ mach-types.h
139 machtypes.h
140 map
141 map_hugetlb
142-media
143 mconf
144+mdp
145 miboot*
146 mk_elfconfig
147 mkboot
148 mkbugboot
149 mkcpustr
150 mkdep
151+mkpiggy
152 mkprep
153 mkregtable
154 mktables
155@@ -188,6 +209,8 @@ oui.c*
156 page-types
157 parse.c
158 parse.h
159+parse-events*
160+pasyms.h
161 patches*
162 pca200e.bin
163 pca200e_ecd.bin2
164@@ -197,6 +220,7 @@ perf-archive
165 piggyback
166 piggy.gzip
167 piggy.S
168+pmu-*
169 pnmtologo
170 ppc_defs.h*
171 pss_boot.h
172@@ -206,7 +230,12 @@ r200_reg_safe.h
173 r300_reg_safe.h
174 r420_reg_safe.h
175 r600_reg_safe.h
176+randomize_layout_hash.h
177+randomize_layout_seed.h
178+realmode.lds
179+realmode.relocs
180 recordmcount
181+regdb.c
182 relocs
183 rlim_names.h
184 rn50_reg_safe.h
185@@ -216,8 +245,12 @@ series
186 setup
187 setup.bin
188 setup.elf
189+signing_key*
190+size_overflow_hash.h
191 sImage
192+slabinfo
193 sm_tbl*
194+sortextable
195 split-include
196 syscalltab.h
197 tables.c
198@@ -227,6 +260,7 @@ tftpboot.img
199 timeconst.h
200 times.h*
201 trix_boot.h
202+user_constants.h
203 utsrelease.h*
204 vdso-syms.lds
205 vdso.lds
206@@ -238,13 +272,17 @@ vdso32.lds
207 vdso32.so.dbg
208 vdso64.lds
209 vdso64.so.dbg
210+vdsox32.lds
211+vdsox32-syms.lds
212 version.h*
213 vmImage
214 vmlinux
215 vmlinux-*
216 vmlinux.aout
217 vmlinux.bin.all
218+vmlinux.bin.bz2
219 vmlinux.lds
220+vmlinux.relocs
221 vmlinuz
222 voffset.h
223 vsyscall.lds
224@@ -252,9 +290,12 @@ vsyscall_32.lds
225 wanxlfw.inc
226 uImage
227 unifdef
228+utsrelease.h
229 wakeup.bin
230 wakeup.elf
231 wakeup.lds
232+x509*
233 zImage*
234 zconf.hash.c
235+zconf.lex.c
236 zoffset.h
237diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
238index 30a8ad0d..2ed9efd 100644
239--- a/Documentation/kernel-parameters.txt
240+++ b/Documentation/kernel-parameters.txt
241@@ -1103,6 +1103,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
242 Format: <unsigned int> such that (rxsize & ~0x1fffc0) == 0.
243 Default: 1024
244
245+ grsec_proc_gid= [GRKERNSEC_PROC_USERGROUP] Chooses GID to
246+ ignore grsecurity's /proc restrictions
247+
248+
249 hashdist= [KNL,NUMA] Large hashes allocated during boot
250 are distributed across NUMA nodes. Defaults on
251 for 64-bit NUMA, off otherwise.
252@@ -2099,6 +2103,10 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
253 noexec=on: enable non-executable mappings (default)
254 noexec=off: disable non-executable mappings
255
256+ nopcid [X86-64]
257+ Disable PCID (Process-Context IDentifier) even if it
258+ is supported by the processor.
259+
260 nosmap [X86]
261 Disable SMAP (Supervisor Mode Access Prevention)
262 even if it is supported by processor.
263@@ -2366,6 +2374,25 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
264 the specified number of seconds. This is to be used if
265 your oopses keep scrolling off the screen.
266
267+ pax_nouderef [X86] disables UDEREF. Most likely needed under certain
268+ virtualization environments that don't cope well with the
269+ expand down segment used by UDEREF on X86-32 or the frequent
270+ page table updates on X86-64.
271+
272+ pax_sanitize_slab=
273+ 0/1 to disable/enable slab object sanitization (enabled by
274+ default).
275+
276+ pax_softmode= 0/1 to disable/enable PaX softmode on boot already.
277+
278+ pax_extra_latent_entropy
279+ Enable a very simple form of latent entropy extraction
280+ from the first 4GB of memory as the bootmem allocator
281+ passes the memory pages to the buddy allocator.
282+
283+ pax_weakuderef [X86-64] enables the weaker but faster form of UDEREF
284+ when the processor supports PCID.
285+
286 pcbit= [HW,ISDN]
287
288 pcd. [PARIDE]
289diff --git a/Makefile b/Makefile
290index 25ecc1d..184bee9 100644
291--- a/Makefile
292+++ b/Makefile
293@@ -246,7 +246,9 @@ CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
294 HOSTCC = gcc
295 HOSTCXX = g++
296 HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer
297-HOSTCXXFLAGS = -O2
298+HOSTCFLAGS = -Wall -W -Wmissing-prototypes -Wstrict-prototypes -Wno-unused-parameter -Wno-missing-field-initializers -O2 -fomit-frame-pointer -fno-delete-null-pointer-checks
299+HOSTCFLAGS += $(call cc-option, -Wno-empty-body)
300+HOSTCXXFLAGS = -O2 -Wall -W -Wno-array-bounds
301
302 ifeq ($(shell $(HOSTCC) -v 2>&1 | grep -c "clang version"), 1)
303 HOSTCFLAGS += -Wno-unused-value -Wno-unused-parameter \
304@@ -438,8 +440,8 @@ export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \
305 # Rules shared between *config targets and build targets
306
307 # Basic helpers built in scripts/
308-PHONY += scripts_basic
309-scripts_basic:
310+PHONY += scripts_basic gcc-plugins
311+scripts_basic: gcc-plugins
312 $(Q)$(MAKE) $(build)=scripts/basic
313 $(Q)rm -f .tmp_quiet_recordmcount
314
315@@ -600,6 +602,72 @@ else
316 KBUILD_CFLAGS += -O2
317 endif
318
319+ifndef DISABLE_PAX_PLUGINS
320+ifeq ($(call cc-ifversion, -ge, 0408, y), y)
321+PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh "$(HOSTCXX)" "$(HOSTCXX)" "$(CC)")
322+else
323+PLUGINCC := $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-plugin.sh "$(HOSTCC)" "$(HOSTCXX)" "$(CC)")
324+endif
325+ifneq ($(PLUGINCC),)
326+ifdef CONFIG_PAX_CONSTIFY_PLUGIN
327+CONSTIFY_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/constify_plugin.so -DCONSTIFY_PLUGIN
328+endif
329+ifdef CONFIG_PAX_MEMORY_STACKLEAK
330+STACKLEAK_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/stackleak_plugin.so -DSTACKLEAK_PLUGIN
331+STACKLEAK_PLUGIN_CFLAGS += -fplugin-arg-stackleak_plugin-track-lowest-sp=100
332+endif
333+ifdef CONFIG_KALLOCSTAT_PLUGIN
334+KALLOCSTAT_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/kallocstat_plugin.so
335+endif
336+ifdef CONFIG_PAX_KERNEXEC_PLUGIN
337+KERNEXEC_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/kernexec_plugin.so
338+KERNEXEC_PLUGIN_CFLAGS += -fplugin-arg-kernexec_plugin-method=$(CONFIG_PAX_KERNEXEC_PLUGIN_METHOD) -DKERNEXEC_PLUGIN
339+KERNEXEC_PLUGIN_AFLAGS := -DKERNEXEC_PLUGIN
340+endif
341+ifdef CONFIG_GRKERNSEC_RANDSTRUCT
342+RANDSTRUCT_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/randomize_layout_plugin.so -DRANDSTRUCT_PLUGIN
343+ifdef CONFIG_GRKERNSEC_RANDSTRUCT_PERFORMANCE
344+RANDSTRUCT_PLUGIN_CFLAGS += -fplugin-arg-randomize_layout_plugin-performance-mode
345+endif
346+endif
347+ifdef CONFIG_CHECKER_PLUGIN
348+ifeq ($(call cc-ifversion, -ge, 0406, y), y)
349+CHECKER_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/checker_plugin.so -DCHECKER_PLUGIN
350+endif
351+endif
352+COLORIZE_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/colorize_plugin.so
353+ifdef CONFIG_PAX_SIZE_OVERFLOW
354+SIZE_OVERFLOW_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/size_overflow_plugin/size_overflow_plugin.so -DSIZE_OVERFLOW_PLUGIN
355+endif
356+ifdef CONFIG_PAX_LATENT_ENTROPY
357+LATENT_ENTROPY_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/latent_entropy_plugin.so -DLATENT_ENTROPY_PLUGIN
358+endif
359+ifdef CONFIG_PAX_MEMORY_STRUCTLEAK
360+STRUCTLEAK_PLUGIN_CFLAGS := -fplugin=$(objtree)/tools/gcc/structleak_plugin.so -DSTRUCTLEAK_PLUGIN
361+endif
362+GCC_PLUGINS_CFLAGS := $(CONSTIFY_PLUGIN_CFLAGS) $(STACKLEAK_PLUGIN_CFLAGS) $(KALLOCSTAT_PLUGIN_CFLAGS)
363+GCC_PLUGINS_CFLAGS += $(KERNEXEC_PLUGIN_CFLAGS) $(CHECKER_PLUGIN_CFLAGS) $(COLORIZE_PLUGIN_CFLAGS)
364+GCC_PLUGINS_CFLAGS += $(SIZE_OVERFLOW_PLUGIN_CFLAGS) $(LATENT_ENTROPY_PLUGIN_CFLAGS) $(STRUCTLEAK_PLUGIN_CFLAGS)
365+GCC_PLUGINS_CFLAGS += $(RANDSTRUCT_PLUGIN_CFLAGS)
366+GCC_PLUGINS_AFLAGS := $(KERNEXEC_PLUGIN_AFLAGS)
367+export PLUGINCC GCC_PLUGINS_CFLAGS GCC_PLUGINS_AFLAGS CONSTIFY_PLUGIN LATENT_ENTROPY_PLUGIN_CFLAGS
368+ifeq ($(KBUILD_EXTMOD),)
369+gcc-plugins:
370+ $(Q)$(MAKE) $(build)=tools/gcc
371+else
372+gcc-plugins: ;
373+endif
374+else
375+gcc-plugins:
376+ifeq ($(call cc-ifversion, -ge, 0405, y), y)
377+ $(error Your gcc installation does not support plugins. If the necessary headers for plugin support are missing, they should be installed. On Debian, apt-get install gcc-<ver>-plugin-dev. If you choose to ignore this error and lessen the improvements provided by this patch, re-run make with the DISABLE_PAX_PLUGINS=y argument.))
378+else
379+ $(Q)echo "warning, your gcc version does not support plugins, you should upgrade it to gcc 4.5 at least"
380+endif
381+ $(Q)echo "PAX_MEMORY_STACKLEAK, constification, PAX_LATENT_ENTROPY and other features will be less secure. PAX_SIZE_OVERFLOW will not be active."
382+endif
383+endif
384+
385 include $(srctree)/arch/$(SRCARCH)/Makefile
386
387 ifdef CONFIG_READABLE_ASM
388@@ -816,7 +884,7 @@ export mod_sign_cmd
389
390
391 ifeq ($(KBUILD_EXTMOD),)
392-core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/
393+core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ grsecurity/
394
395 vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \
396 $(core-y) $(core-m) $(drivers-y) $(drivers-m) \
397@@ -865,6 +933,8 @@ endif
398
399 # The actual objects are generated when descending,
400 # make sure no implicit rule kicks in
401+$(filter-out $(init-y),$(vmlinux-deps)): KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
402+$(filter-out $(init-y),$(vmlinux-deps)): KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
403 $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
404
405 # Handle descending into subdirectories listed in $(vmlinux-dirs)
406@@ -874,7 +944,7 @@ $(sort $(vmlinux-deps)): $(vmlinux-dirs) ;
407 # Error messages still appears in the original language
408
409 PHONY += $(vmlinux-dirs)
410-$(vmlinux-dirs): prepare scripts
411+$(vmlinux-dirs): gcc-plugins prepare scripts
412 $(Q)$(MAKE) $(build)=$@
413
414 define filechk_kernel.release
415@@ -917,10 +987,13 @@ prepare1: prepare2 $(version_h) include/generated/utsrelease.h \
416
417 archprepare: archheaders archscripts prepare1 scripts_basic
418
419+prepare0: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
420+prepare0: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
421 prepare0: archprepare FORCE
422 $(Q)$(MAKE) $(build)=.
423
424 # All the preparing..
425+prepare: KBUILD_CFLAGS := $(filter-out $(GCC_PLUGINS_CFLAGS),$(KBUILD_CFLAGS))
426 prepare: prepare0
427
428 # Generate some files
429@@ -1028,6 +1101,8 @@ all: modules
430 # using awk while concatenating to the final file.
431
432 PHONY += modules
433+modules: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
434+modules: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
435 modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin
436 $(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order
437 @$(kecho) ' Building modules, stage 2.';
438@@ -1043,7 +1118,7 @@ modules.builtin: $(vmlinux-dirs:%=%/modules.builtin)
439
440 # Target to prepare building external modules
441 PHONY += modules_prepare
442-modules_prepare: prepare scripts
443+modules_prepare: gcc-plugins prepare scripts
444
445 # Target to install modules
446 PHONY += modules_install
447@@ -1109,7 +1184,10 @@ MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \
448 Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \
449 signing_key.priv signing_key.x509 x509.genkey \
450 extra_certificates signing_key.x509.keyid \
451- signing_key.x509.signer include/linux/version.h
452+ signing_key.x509.signer include/linux/version.h \
453+ tools/gcc/size_overflow_plugin/size_overflow_hash_aux.h \
454+ tools/gcc/size_overflow_plugin/size_overflow_hash.h \
455+ tools/gcc/randomize_layout_seed.h
456
457 # clean - Delete most, but leave enough to build external modules
458 #
459@@ -1148,7 +1226,7 @@ distclean: mrproper
460 @find $(srctree) $(RCS_FIND_IGNORE) \
461 \( -name '*.orig' -o -name '*.rej' -o -name '*~' \
462 -o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \
463- -o -name '.*.rej' -o -name '*%' -o -name 'core' \) \
464+ -o -name '.*.rej' -o -name '*.so' -o -name '*%' -o -name 'core' \) \
465 -type f -print | xargs rm -f
466
467
468@@ -1309,6 +1387,8 @@ PHONY += $(module-dirs) modules
469 $(module-dirs): crmodverdir $(objtree)/Module.symvers
470 $(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@)
471
472+modules: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
473+modules: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
474 modules: $(module-dirs)
475 @$(kecho) ' Building modules, stage 2.';
476 $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost
477@@ -1448,17 +1528,21 @@ else
478 target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@))
479 endif
480
481-%.s: %.c prepare scripts FORCE
482+%.s: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
483+%.s: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
484+%.s: %.c gcc-plugins prepare scripts FORCE
485 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
486 %.i: %.c prepare scripts FORCE
487 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
488-%.o: %.c prepare scripts FORCE
489+%.o: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
490+%.o: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
491+%.o: %.c gcc-plugins prepare scripts FORCE
492 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
493 %.lst: %.c prepare scripts FORCE
494 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
495-%.s: %.S prepare scripts FORCE
496+%.s: %.S gcc-plugins prepare scripts FORCE
497 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
498-%.o: %.S prepare scripts FORCE
499+%.o: %.S gcc-plugins prepare scripts FORCE
500 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
501 %.symtypes: %.c prepare scripts FORCE
502 $(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
503@@ -1468,11 +1552,15 @@ endif
504 $(cmd_crmodverdir)
505 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
506 $(build)=$(build-dir)
507-%/: prepare scripts FORCE
508+%/: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
509+%/: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
510+%/: gcc-plugins prepare scripts FORCE
511 $(cmd_crmodverdir)
512 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
513 $(build)=$(build-dir)
514-%.ko: prepare scripts FORCE
515+%.ko: KBUILD_CFLAGS += $(GCC_PLUGINS_CFLAGS)
516+%.ko: KBUILD_AFLAGS += $(GCC_PLUGINS_AFLAGS)
517+%.ko: gcc-plugins prepare scripts FORCE
518 $(cmd_crmodverdir)
519 $(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
520 $(build)=$(build-dir) $(@:.ko=.o)
521diff --git a/arch/alpha/include/asm/atomic.h b/arch/alpha/include/asm/atomic.h
522index 78b03ef..da28a51 100644
523--- a/arch/alpha/include/asm/atomic.h
524+++ b/arch/alpha/include/asm/atomic.h
525@@ -292,6 +292,16 @@ static inline long atomic64_dec_if_positive(atomic64_t *v)
526 #define atomic_dec(v) atomic_sub(1,(v))
527 #define atomic64_dec(v) atomic64_sub(1,(v))
528
529+#define atomic64_read_unchecked(v) atomic64_read(v)
530+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i))
531+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v))
532+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v))
533+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v))
534+#define atomic64_inc_unchecked(v) atomic64_inc(v)
535+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v)
536+#define atomic64_dec_unchecked(v) atomic64_dec(v)
537+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n))
538+
539 #define smp_mb__before_atomic_dec() smp_mb()
540 #define smp_mb__after_atomic_dec() smp_mb()
541 #define smp_mb__before_atomic_inc() smp_mb()
542diff --git a/arch/alpha/include/asm/cache.h b/arch/alpha/include/asm/cache.h
543index ad368a9..fbe0f25 100644
544--- a/arch/alpha/include/asm/cache.h
545+++ b/arch/alpha/include/asm/cache.h
546@@ -4,19 +4,19 @@
547 #ifndef __ARCH_ALPHA_CACHE_H
548 #define __ARCH_ALPHA_CACHE_H
549
550+#include <linux/const.h>
551
552 /* Bytes per L1 (data) cache line. */
553 #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_EV6)
554-# define L1_CACHE_BYTES 64
555 # define L1_CACHE_SHIFT 6
556 #else
557 /* Both EV4 and EV5 are write-through, read-allocate,
558 direct-mapped, physical.
559 */
560-# define L1_CACHE_BYTES 32
561 # define L1_CACHE_SHIFT 5
562 #endif
563
564+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
565 #define SMP_CACHE_BYTES L1_CACHE_BYTES
566
567 #endif
568diff --git a/arch/alpha/include/asm/elf.h b/arch/alpha/include/asm/elf.h
569index 968d999..d36b2df 100644
570--- a/arch/alpha/include/asm/elf.h
571+++ b/arch/alpha/include/asm/elf.h
572@@ -91,6 +91,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
573
574 #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x1000000)
575
576+#ifdef CONFIG_PAX_ASLR
577+#define PAX_ELF_ET_DYN_BASE (current->personality & ADDR_LIMIT_32BIT ? 0x10000 : 0x120000000UL)
578+
579+#define PAX_DELTA_MMAP_LEN (current->personality & ADDR_LIMIT_32BIT ? 14 : 28)
580+#define PAX_DELTA_STACK_LEN (current->personality & ADDR_LIMIT_32BIT ? 14 : 19)
581+#endif
582+
583 /* $0 is set by ld.so to a pointer to a function which might be
584 registered using atexit. This provides a mean for the dynamic
585 linker to call DT_FINI functions for shared libraries that have
586diff --git a/arch/alpha/include/asm/pgalloc.h b/arch/alpha/include/asm/pgalloc.h
587index aab14a0..b4fa3e7 100644
588--- a/arch/alpha/include/asm/pgalloc.h
589+++ b/arch/alpha/include/asm/pgalloc.h
590@@ -29,6 +29,12 @@ pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
591 pgd_set(pgd, pmd);
592 }
593
594+static inline void
595+pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
596+{
597+ pgd_populate(mm, pgd, pmd);
598+}
599+
600 extern pgd_t *pgd_alloc(struct mm_struct *mm);
601
602 static inline void
603diff --git a/arch/alpha/include/asm/pgtable.h b/arch/alpha/include/asm/pgtable.h
604index d8f9b7e..f6222fa 100644
605--- a/arch/alpha/include/asm/pgtable.h
606+++ b/arch/alpha/include/asm/pgtable.h
607@@ -102,6 +102,17 @@ struct vm_area_struct;
608 #define PAGE_SHARED __pgprot(_PAGE_VALID | __ACCESS_BITS)
609 #define PAGE_COPY __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW)
610 #define PAGE_READONLY __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW)
611+
612+#ifdef CONFIG_PAX_PAGEEXEC
613+# define PAGE_SHARED_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOE)
614+# define PAGE_COPY_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE)
615+# define PAGE_READONLY_NOEXEC __pgprot(_PAGE_VALID | __ACCESS_BITS | _PAGE_FOW | _PAGE_FOE)
616+#else
617+# define PAGE_SHARED_NOEXEC PAGE_SHARED
618+# define PAGE_COPY_NOEXEC PAGE_COPY
619+# define PAGE_READONLY_NOEXEC PAGE_READONLY
620+#endif
621+
622 #define PAGE_KERNEL __pgprot(_PAGE_VALID | _PAGE_ASM | _PAGE_KRE | _PAGE_KWE)
623
624 #define _PAGE_NORMAL(x) __pgprot(_PAGE_VALID | __ACCESS_BITS | (x))
625diff --git a/arch/alpha/kernel/module.c b/arch/alpha/kernel/module.c
626index 2fd00b7..cfd5069 100644
627--- a/arch/alpha/kernel/module.c
628+++ b/arch/alpha/kernel/module.c
629@@ -160,7 +160,7 @@ apply_relocate_add(Elf64_Shdr *sechdrs, const char *strtab,
630
631 /* The small sections were sorted to the end of the segment.
632 The following should definitely cover them. */
633- gp = (u64)me->module_core + me->core_size - 0x8000;
634+ gp = (u64)me->module_core_rw + me->core_size_rw - 0x8000;
635 got = sechdrs[me->arch.gotsecindex].sh_addr;
636
637 for (i = 0; i < n; i++) {
638diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
639index 1402fcc..0b1abd2 100644
640--- a/arch/alpha/kernel/osf_sys.c
641+++ b/arch/alpha/kernel/osf_sys.c
642@@ -1298,10 +1298,11 @@ SYSCALL_DEFINE1(old_adjtimex, struct timex32 __user *, txc_p)
643 generic version except that we know how to honor ADDR_LIMIT_32BIT. */
644
645 static unsigned long
646-arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
647- unsigned long limit)
648+arch_get_unmapped_area_1(struct file *filp, unsigned long addr, unsigned long len,
649+ unsigned long limit, unsigned long flags)
650 {
651 struct vm_unmapped_area_info info;
652+ unsigned long offset = gr_rand_threadstack_offset(current->mm, filp, flags);
653
654 info.flags = 0;
655 info.length = len;
656@@ -1309,6 +1310,7 @@ arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
657 info.high_limit = limit;
658 info.align_mask = 0;
659 info.align_offset = 0;
660+ info.threadstack_offset = offset;
661 return vm_unmapped_area(&info);
662 }
663
664@@ -1341,20 +1343,24 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
665 merely specific addresses, but regions of memory -- perhaps
666 this feature should be incorporated into all ports? */
667
668+#ifdef CONFIG_PAX_RANDMMAP
669+ if (!(current->mm->pax_flags & MF_PAX_RANDMMAP))
670+#endif
671+
672 if (addr) {
673- addr = arch_get_unmapped_area_1 (PAGE_ALIGN(addr), len, limit);
674+ addr = arch_get_unmapped_area_1 (filp, PAGE_ALIGN(addr), len, limit, flags);
675 if (addr != (unsigned long) -ENOMEM)
676 return addr;
677 }
678
679 /* Next, try allocating at TASK_UNMAPPED_BASE. */
680- addr = arch_get_unmapped_area_1 (PAGE_ALIGN(TASK_UNMAPPED_BASE),
681- len, limit);
682+ addr = arch_get_unmapped_area_1 (filp, PAGE_ALIGN(current->mm->mmap_base), len, limit, flags);
683+
684 if (addr != (unsigned long) -ENOMEM)
685 return addr;
686
687 /* Finally, try allocating in low memory. */
688- addr = arch_get_unmapped_area_1 (PAGE_SIZE, len, limit);
689+ addr = arch_get_unmapped_area_1 (filp, PAGE_SIZE, len, limit, flags);
690
691 return addr;
692 }
693diff --git a/arch/alpha/mm/fault.c b/arch/alpha/mm/fault.c
694index 98838a0..b304fb4 100644
695--- a/arch/alpha/mm/fault.c
696+++ b/arch/alpha/mm/fault.c
697@@ -53,6 +53,124 @@ __load_new_mm_context(struct mm_struct *next_mm)
698 __reload_thread(pcb);
699 }
700
701+#ifdef CONFIG_PAX_PAGEEXEC
702+/*
703+ * PaX: decide what to do with offenders (regs->pc = fault address)
704+ *
705+ * returns 1 when task should be killed
706+ * 2 when patched PLT trampoline was detected
707+ * 3 when unpatched PLT trampoline was detected
708+ */
709+static int pax_handle_fetch_fault(struct pt_regs *regs)
710+{
711+
712+#ifdef CONFIG_PAX_EMUPLT
713+ int err;
714+
715+ do { /* PaX: patched PLT emulation #1 */
716+ unsigned int ldah, ldq, jmp;
717+
718+ err = get_user(ldah, (unsigned int *)regs->pc);
719+ err |= get_user(ldq, (unsigned int *)(regs->pc+4));
720+ err |= get_user(jmp, (unsigned int *)(regs->pc+8));
721+
722+ if (err)
723+ break;
724+
725+ if ((ldah & 0xFFFF0000U) == 0x277B0000U &&
726+ (ldq & 0xFFFF0000U) == 0xA77B0000U &&
727+ jmp == 0x6BFB0000U)
728+ {
729+ unsigned long r27, addr;
730+ unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16;
731+ unsigned long addrl = ldq | 0xFFFFFFFFFFFF0000UL;
732+
733+ addr = regs->r27 + ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL);
734+ err = get_user(r27, (unsigned long *)addr);
735+ if (err)
736+ break;
737+
738+ regs->r27 = r27;
739+ regs->pc = r27;
740+ return 2;
741+ }
742+ } while (0);
743+
744+ do { /* PaX: patched PLT emulation #2 */
745+ unsigned int ldah, lda, br;
746+
747+ err = get_user(ldah, (unsigned int *)regs->pc);
748+ err |= get_user(lda, (unsigned int *)(regs->pc+4));
749+ err |= get_user(br, (unsigned int *)(regs->pc+8));
750+
751+ if (err)
752+ break;
753+
754+ if ((ldah & 0xFFFF0000U) == 0x277B0000U &&
755+ (lda & 0xFFFF0000U) == 0xA77B0000U &&
756+ (br & 0xFFE00000U) == 0xC3E00000U)
757+ {
758+ unsigned long addr = br | 0xFFFFFFFFFFE00000UL;
759+ unsigned long addrh = (ldah | 0xFFFFFFFFFFFF0000UL) << 16;
760+ unsigned long addrl = lda | 0xFFFFFFFFFFFF0000UL;
761+
762+ regs->r27 += ((addrh ^ 0x80000000UL) + 0x80000000UL) + ((addrl ^ 0x8000UL) + 0x8000UL);
763+ regs->pc += 12 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2);
764+ return 2;
765+ }
766+ } while (0);
767+
768+ do { /* PaX: unpatched PLT emulation */
769+ unsigned int br;
770+
771+ err = get_user(br, (unsigned int *)regs->pc);
772+
773+ if (!err && (br & 0xFFE00000U) == 0xC3800000U) {
774+ unsigned int br2, ldq, nop, jmp;
775+ unsigned long addr = br | 0xFFFFFFFFFFE00000UL, resolver;
776+
777+ addr = regs->pc + 4 + (((addr ^ 0x00100000UL) + 0x00100000UL) << 2);
778+ err = get_user(br2, (unsigned int *)addr);
779+ err |= get_user(ldq, (unsigned int *)(addr+4));
780+ err |= get_user(nop, (unsigned int *)(addr+8));
781+ err |= get_user(jmp, (unsigned int *)(addr+12));
782+ err |= get_user(resolver, (unsigned long *)(addr+16));
783+
784+ if (err)
785+ break;
786+
787+ if (br2 == 0xC3600000U &&
788+ ldq == 0xA77B000CU &&
789+ nop == 0x47FF041FU &&
790+ jmp == 0x6B7B0000U)
791+ {
792+ regs->r28 = regs->pc+4;
793+ regs->r27 = addr+16;
794+ regs->pc = resolver;
795+ return 3;
796+ }
797+ }
798+ } while (0);
799+#endif
800+
801+ return 1;
802+}
803+
804+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
805+{
806+ unsigned long i;
807+
808+ printk(KERN_ERR "PAX: bytes at PC: ");
809+ for (i = 0; i < 5; i++) {
810+ unsigned int c;
811+ if (get_user(c, (unsigned int *)pc+i))
812+ printk(KERN_CONT "???????? ");
813+ else
814+ printk(KERN_CONT "%08x ", c);
815+ }
816+ printk("\n");
817+}
818+#endif
819
820 /*
821 * This routine handles page faults. It determines the address,
822@@ -133,8 +251,29 @@ retry:
823 good_area:
824 si_code = SEGV_ACCERR;
825 if (cause < 0) {
826- if (!(vma->vm_flags & VM_EXEC))
827+ if (!(vma->vm_flags & VM_EXEC)) {
828+
829+#ifdef CONFIG_PAX_PAGEEXEC
830+ if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->pc)
831+ goto bad_area;
832+
833+ up_read(&mm->mmap_sem);
834+ switch (pax_handle_fetch_fault(regs)) {
835+
836+#ifdef CONFIG_PAX_EMUPLT
837+ case 2:
838+ case 3:
839+ return;
840+#endif
841+
842+ }
843+ pax_report_fault(regs, (void *)regs->pc, (void *)rdusp());
844+ do_group_exit(SIGKILL);
845+#else
846 goto bad_area;
847+#endif
848+
849+ }
850 } else if (!cause) {
851 /* Allow reads even for write-only mappings */
852 if (!(vma->vm_flags & (VM_READ | VM_WRITE)))
853diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
854index db3c541..a1acc89 100644
855--- a/arch/arm/Kconfig
856+++ b/arch/arm/Kconfig
857@@ -1877,7 +1877,7 @@ config ALIGNMENT_TRAP
858
859 config UACCESS_WITH_MEMCPY
860 bool "Use kernel mem{cpy,set}() for {copy_to,clear}_user()"
861- depends on MMU
862+ depends on MMU && !PAX_MEMORY_UDEREF
863 default y if CPU_FEROCEON
864 help
865 Implement faster copy_to_user and clear_user methods for CPU
866@@ -2141,6 +2141,7 @@ config XIP_PHYS_ADDR
867 config KEXEC
868 bool "Kexec system call (EXPERIMENTAL)"
869 depends on (!SMP || PM_SLEEP_SMP)
870+ depends on !GRKERNSEC_KMEM
871 help
872 kexec is a system call that implements the ability to shutdown your
873 current kernel, and to start another kernel. It is like a reboot
874diff --git a/arch/arm/include/asm/atomic.h b/arch/arm/include/asm/atomic.h
875index 9a92fd7..3502a80 100644
876--- a/arch/arm/include/asm/atomic.h
877+++ b/arch/arm/include/asm/atomic.h
878@@ -18,17 +18,35 @@
879 #include <asm/barrier.h>
880 #include <asm/cmpxchg.h>
881
882+#ifdef CONFIG_GENERIC_ATOMIC64
883+#include <asm-generic/atomic64.h>
884+#endif
885+
886 #define ATOMIC_INIT(i) { (i) }
887
888 #ifdef __KERNEL__
889
890+#define _ASM_EXTABLE(from, to) \
891+" .pushsection __ex_table,\"a\"\n"\
892+" .align 3\n" \
893+" .long " #from ", " #to"\n" \
894+" .popsection"
895+
896 /*
897 * On ARM, ordinary assignment (str instruction) doesn't clear the local
898 * strex/ldrex monitor on some implementations. The reason we can use it for
899 * atomic_set() is the clrex or dummy strex done on every exception return.
900 */
901 #define atomic_read(v) (*(volatile int *)&(v)->counter)
902+static inline int atomic_read_unchecked(const atomic_unchecked_t *v)
903+{
904+ return v->counter;
905+}
906 #define atomic_set(v,i) (((v)->counter) = (i))
907+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i)
908+{
909+ v->counter = i;
910+}
911
912 #if __LINUX_ARM_ARCH__ >= 6
913
914@@ -44,6 +62,36 @@ static inline void atomic_add(int i, atomic_t *v)
915
916 prefetchw(&v->counter);
917 __asm__ __volatile__("@ atomic_add\n"
918+"1: ldrex %1, [%3]\n"
919+" adds %0, %1, %4\n"
920+
921+#ifdef CONFIG_PAX_REFCOUNT
922+" bvc 3f\n"
923+"2: bkpt 0xf103\n"
924+"3:\n"
925+#endif
926+
927+" strex %1, %0, [%3]\n"
928+" teq %1, #0\n"
929+" bne 1b"
930+
931+#ifdef CONFIG_PAX_REFCOUNT
932+"\n4:\n"
933+ _ASM_EXTABLE(2b, 4b)
934+#endif
935+
936+ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
937+ : "r" (&v->counter), "Ir" (i)
938+ : "cc");
939+}
940+
941+static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v)
942+{
943+ unsigned long tmp;
944+ int result;
945+
946+ prefetchw(&v->counter);
947+ __asm__ __volatile__("@ atomic_add_unchecked\n"
948 "1: ldrex %0, [%3]\n"
949 " add %0, %0, %4\n"
950 " strex %1, %0, [%3]\n"
951@@ -63,6 +111,43 @@ static inline int atomic_add_return(int i, atomic_t *v)
952 prefetchw(&v->counter);
953
954 __asm__ __volatile__("@ atomic_add_return\n"
955+"1: ldrex %1, [%3]\n"
956+" adds %0, %1, %4\n"
957+
958+#ifdef CONFIG_PAX_REFCOUNT
959+" bvc 3f\n"
960+" mov %0, %1\n"
961+"2: bkpt 0xf103\n"
962+"3:\n"
963+#endif
964+
965+" strex %1, %0, [%3]\n"
966+" teq %1, #0\n"
967+" bne 1b"
968+
969+#ifdef CONFIG_PAX_REFCOUNT
970+"\n4:\n"
971+ _ASM_EXTABLE(2b, 4b)
972+#endif
973+
974+ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
975+ : "r" (&v->counter), "Ir" (i)
976+ : "cc");
977+
978+ smp_mb();
979+
980+ return result;
981+}
982+
983+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
984+{
985+ unsigned long tmp;
986+ int result;
987+
988+ smp_mb();
989+ prefetchw(&v->counter);
990+
991+ __asm__ __volatile__("@ atomic_add_return_unchecked\n"
992 "1: ldrex %0, [%3]\n"
993 " add %0, %0, %4\n"
994 " strex %1, %0, [%3]\n"
995@@ -84,6 +169,36 @@ static inline void atomic_sub(int i, atomic_t *v)
996
997 prefetchw(&v->counter);
998 __asm__ __volatile__("@ atomic_sub\n"
999+"1: ldrex %1, [%3]\n"
1000+" subs %0, %1, %4\n"
1001+
1002+#ifdef CONFIG_PAX_REFCOUNT
1003+" bvc 3f\n"
1004+"2: bkpt 0xf103\n"
1005+"3:\n"
1006+#endif
1007+
1008+" strex %1, %0, [%3]\n"
1009+" teq %1, #0\n"
1010+" bne 1b"
1011+
1012+#ifdef CONFIG_PAX_REFCOUNT
1013+"\n4:\n"
1014+ _ASM_EXTABLE(2b, 4b)
1015+#endif
1016+
1017+ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
1018+ : "r" (&v->counter), "Ir" (i)
1019+ : "cc");
1020+}
1021+
1022+static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v)
1023+{
1024+ unsigned long tmp;
1025+ int result;
1026+
1027+ prefetchw(&v->counter);
1028+ __asm__ __volatile__("@ atomic_sub_unchecked\n"
1029 "1: ldrex %0, [%3]\n"
1030 " sub %0, %0, %4\n"
1031 " strex %1, %0, [%3]\n"
1032@@ -103,11 +218,25 @@ static inline int atomic_sub_return(int i, atomic_t *v)
1033 prefetchw(&v->counter);
1034
1035 __asm__ __volatile__("@ atomic_sub_return\n"
1036-"1: ldrex %0, [%3]\n"
1037-" sub %0, %0, %4\n"
1038+"1: ldrex %1, [%3]\n"
1039+" subs %0, %1, %4\n"
1040+
1041+#ifdef CONFIG_PAX_REFCOUNT
1042+" bvc 3f\n"
1043+" mov %0, %1\n"
1044+"2: bkpt 0xf103\n"
1045+"3:\n"
1046+#endif
1047+
1048 " strex %1, %0, [%3]\n"
1049 " teq %1, #0\n"
1050 " bne 1b"
1051+
1052+#ifdef CONFIG_PAX_REFCOUNT
1053+"\n4:\n"
1054+ _ASM_EXTABLE(2b, 4b)
1055+#endif
1056+
1057 : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
1058 : "r" (&v->counter), "Ir" (i)
1059 : "cc");
1060@@ -152,12 +281,24 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
1061 __asm__ __volatile__ ("@ atomic_add_unless\n"
1062 "1: ldrex %0, [%4]\n"
1063 " teq %0, %5\n"
1064-" beq 2f\n"
1065-" add %1, %0, %6\n"
1066+" beq 4f\n"
1067+" adds %1, %0, %6\n"
1068+
1069+#ifdef CONFIG_PAX_REFCOUNT
1070+" bvc 3f\n"
1071+"2: bkpt 0xf103\n"
1072+"3:\n"
1073+#endif
1074+
1075 " strex %2, %1, [%4]\n"
1076 " teq %2, #0\n"
1077 " bne 1b\n"
1078-"2:"
1079+"4:"
1080+
1081+#ifdef CONFIG_PAX_REFCOUNT
1082+ _ASM_EXTABLE(2b, 4b)
1083+#endif
1084+
1085 : "=&r" (oldval), "=&r" (newval), "=&r" (tmp), "+Qo" (v->counter)
1086 : "r" (&v->counter), "r" (u), "r" (a)
1087 : "cc");
1088@@ -168,6 +309,28 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
1089 return oldval;
1090 }
1091
1092+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *ptr, int old, int new)
1093+{
1094+ unsigned long oldval, res;
1095+
1096+ smp_mb();
1097+
1098+ do {
1099+ __asm__ __volatile__("@ atomic_cmpxchg_unchecked\n"
1100+ "ldrex %1, [%3]\n"
1101+ "mov %0, #0\n"
1102+ "teq %1, %4\n"
1103+ "strexeq %0, %5, [%3]\n"
1104+ : "=&r" (res), "=&r" (oldval), "+Qo" (ptr->counter)
1105+ : "r" (&ptr->counter), "Ir" (old), "r" (new)
1106+ : "cc");
1107+ } while (res);
1108+
1109+ smp_mb();
1110+
1111+ return oldval;
1112+}
1113+
1114 #else /* ARM_ARCH_6 */
1115
1116 #ifdef CONFIG_SMP
1117@@ -186,7 +349,17 @@ static inline int atomic_add_return(int i, atomic_t *v)
1118
1119 return val;
1120 }
1121+
1122+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
1123+{
1124+ return atomic_add_return(i, v);
1125+}
1126+
1127 #define atomic_add(i, v) (void) atomic_add_return(i, v)
1128+static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v)
1129+{
1130+ (void) atomic_add_return(i, v);
1131+}
1132
1133 static inline int atomic_sub_return(int i, atomic_t *v)
1134 {
1135@@ -201,6 +374,10 @@ static inline int atomic_sub_return(int i, atomic_t *v)
1136 return val;
1137 }
1138 #define atomic_sub(i, v) (void) atomic_sub_return(i, v)
1139+static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v)
1140+{
1141+ (void) atomic_sub_return(i, v);
1142+}
1143
1144 static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
1145 {
1146@@ -216,6 +393,11 @@ static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
1147 return ret;
1148 }
1149
1150+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new)
1151+{
1152+ return atomic_cmpxchg(v, old, new);
1153+}
1154+
1155 static inline int __atomic_add_unless(atomic_t *v, int a, int u)
1156 {
1157 int c, old;
1158@@ -229,13 +411,33 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
1159 #endif /* __LINUX_ARM_ARCH__ */
1160
1161 #define atomic_xchg(v, new) (xchg(&((v)->counter), new))
1162+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new)
1163+{
1164+ return xchg(&v->counter, new);
1165+}
1166
1167 #define atomic_inc(v) atomic_add(1, v)
1168+static inline void atomic_inc_unchecked(atomic_unchecked_t *v)
1169+{
1170+ atomic_add_unchecked(1, v);
1171+}
1172 #define atomic_dec(v) atomic_sub(1, v)
1173+static inline void atomic_dec_unchecked(atomic_unchecked_t *v)
1174+{
1175+ atomic_sub_unchecked(1, v);
1176+}
1177
1178 #define atomic_inc_and_test(v) (atomic_add_return(1, v) == 0)
1179+static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v)
1180+{
1181+ return atomic_add_return_unchecked(1, v) == 0;
1182+}
1183 #define atomic_dec_and_test(v) (atomic_sub_return(1, v) == 0)
1184 #define atomic_inc_return(v) (atomic_add_return(1, v))
1185+static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v)
1186+{
1187+ return atomic_add_return_unchecked(1, v);
1188+}
1189 #define atomic_dec_return(v) (atomic_sub_return(1, v))
1190 #define atomic_sub_and_test(i, v) (atomic_sub_return(i, v) == 0)
1191
1192@@ -251,6 +453,14 @@ typedef struct {
1193 long long counter;
1194 } atomic64_t;
1195
1196+#ifdef CONFIG_PAX_REFCOUNT
1197+typedef struct {
1198+ long long counter;
1199+} atomic64_unchecked_t;
1200+#else
1201+typedef atomic64_t atomic64_unchecked_t;
1202+#endif
1203+
1204 #define ATOMIC64_INIT(i) { (i) }
1205
1206 #ifdef CONFIG_ARM_LPAE
1207@@ -267,6 +477,19 @@ static inline long long atomic64_read(const atomic64_t *v)
1208 return result;
1209 }
1210
1211+static inline long long atomic64_read_unchecked(const atomic64_unchecked_t *v)
1212+{
1213+ long long result;
1214+
1215+ __asm__ __volatile__("@ atomic64_read_unchecked\n"
1216+" ldrd %0, %H0, [%1]"
1217+ : "=&r" (result)
1218+ : "r" (&v->counter), "Qo" (v->counter)
1219+ );
1220+
1221+ return result;
1222+}
1223+
1224 static inline void atomic64_set(atomic64_t *v, long long i)
1225 {
1226 __asm__ __volatile__("@ atomic64_set\n"
1227@@ -275,6 +498,15 @@ static inline void atomic64_set(atomic64_t *v, long long i)
1228 : "r" (&v->counter), "r" (i)
1229 );
1230 }
1231+
1232+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long long i)
1233+{
1234+ __asm__ __volatile__("@ atomic64_set_unchecked\n"
1235+" strd %2, %H2, [%1]"
1236+ : "=Qo" (v->counter)
1237+ : "r" (&v->counter), "r" (i)
1238+ );
1239+}
1240 #else
1241 static inline long long atomic64_read(const atomic64_t *v)
1242 {
1243@@ -289,6 +521,19 @@ static inline long long atomic64_read(const atomic64_t *v)
1244 return result;
1245 }
1246
1247+static inline long long atomic64_read_unchecked(const atomic64_unchecked_t *v)
1248+{
1249+ long long result;
1250+
1251+ __asm__ __volatile__("@ atomic64_read_unchecked\n"
1252+" ldrexd %0, %H0, [%1]"
1253+ : "=&r" (result)
1254+ : "r" (&v->counter), "Qo" (v->counter)
1255+ );
1256+
1257+ return result;
1258+}
1259+
1260 static inline void atomic64_set(atomic64_t *v, long long i)
1261 {
1262 long long tmp;
1263@@ -303,6 +548,21 @@ static inline void atomic64_set(atomic64_t *v, long long i)
1264 : "r" (&v->counter), "r" (i)
1265 : "cc");
1266 }
1267+
1268+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long long i)
1269+{
1270+ long long tmp;
1271+
1272+ prefetchw(&v->counter);
1273+ __asm__ __volatile__("@ atomic64_set_unchecked\n"
1274+"1: ldrexd %0, %H0, [%2]\n"
1275+" strexd %0, %3, %H3, [%2]\n"
1276+" teq %0, #0\n"
1277+" bne 1b"
1278+ : "=&r" (tmp), "=Qo" (v->counter)
1279+ : "r" (&v->counter), "r" (i)
1280+ : "cc");
1281+}
1282 #endif
1283
1284 static inline void atomic64_add(long long i, atomic64_t *v)
1285@@ -314,6 +574,37 @@ static inline void atomic64_add(long long i, atomic64_t *v)
1286 __asm__ __volatile__("@ atomic64_add\n"
1287 "1: ldrexd %0, %H0, [%3]\n"
1288 " adds %Q0, %Q0, %Q4\n"
1289+" adcs %R0, %R0, %R4\n"
1290+
1291+#ifdef CONFIG_PAX_REFCOUNT
1292+" bvc 3f\n"
1293+"2: bkpt 0xf103\n"
1294+"3:\n"
1295+#endif
1296+
1297+" strexd %1, %0, %H0, [%3]\n"
1298+" teq %1, #0\n"
1299+" bne 1b"
1300+
1301+#ifdef CONFIG_PAX_REFCOUNT
1302+"\n4:\n"
1303+ _ASM_EXTABLE(2b, 4b)
1304+#endif
1305+
1306+ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
1307+ : "r" (&v->counter), "r" (i)
1308+ : "cc");
1309+}
1310+
1311+static inline void atomic64_add_unchecked(long long i, atomic64_unchecked_t *v)
1312+{
1313+ long long result;
1314+ unsigned long tmp;
1315+
1316+ prefetchw(&v->counter);
1317+ __asm__ __volatile__("@ atomic64_add_unchecked\n"
1318+"1: ldrexd %0, %H0, [%3]\n"
1319+" adds %Q0, %Q0, %Q4\n"
1320 " adc %R0, %R0, %R4\n"
1321 " strexd %1, %0, %H0, [%3]\n"
1322 " teq %1, #0\n"
1323@@ -334,6 +625,44 @@ static inline long long atomic64_add_return(long long i, atomic64_t *v)
1324 __asm__ __volatile__("@ atomic64_add_return\n"
1325 "1: ldrexd %0, %H0, [%3]\n"
1326 " adds %Q0, %Q0, %Q4\n"
1327+" adcs %R0, %R0, %R4\n"
1328+
1329+#ifdef CONFIG_PAX_REFCOUNT
1330+" bvc 3f\n"
1331+" mov %0, %1\n"
1332+" mov %H0, %H1\n"
1333+"2: bkpt 0xf103\n"
1334+"3:\n"
1335+#endif
1336+
1337+" strexd %1, %0, %H0, [%3]\n"
1338+" teq %1, #0\n"
1339+" bne 1b"
1340+
1341+#ifdef CONFIG_PAX_REFCOUNT
1342+"\n4:\n"
1343+ _ASM_EXTABLE(2b, 4b)
1344+#endif
1345+
1346+ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
1347+ : "r" (&v->counter), "r" (i)
1348+ : "cc");
1349+
1350+ smp_mb();
1351+
1352+ return result;
1353+}
1354+
1355+static inline long long atomic64_add_return_unchecked(long long i, atomic64_unchecked_t *v)
1356+{
1357+ long long result;
1358+ unsigned long tmp;
1359+
1360+ smp_mb();
1361+
1362+ __asm__ __volatile__("@ atomic64_add_return_unchecked\n"
1363+"1: ldrexd %0, %H0, [%3]\n"
1364+" adds %Q0, %Q0, %Q4\n"
1365 " adc %R0, %R0, %R4\n"
1366 " strexd %1, %0, %H0, [%3]\n"
1367 " teq %1, #0\n"
1368@@ -356,6 +685,37 @@ static inline void atomic64_sub(long long i, atomic64_t *v)
1369 __asm__ __volatile__("@ atomic64_sub\n"
1370 "1: ldrexd %0, %H0, [%3]\n"
1371 " subs %Q0, %Q0, %Q4\n"
1372+" sbcs %R0, %R0, %R4\n"
1373+
1374+#ifdef CONFIG_PAX_REFCOUNT
1375+" bvc 3f\n"
1376+"2: bkpt 0xf103\n"
1377+"3:\n"
1378+#endif
1379+
1380+" strexd %1, %0, %H0, [%3]\n"
1381+" teq %1, #0\n"
1382+" bne 1b"
1383+
1384+#ifdef CONFIG_PAX_REFCOUNT
1385+"\n4:\n"
1386+ _ASM_EXTABLE(2b, 4b)
1387+#endif
1388+
1389+ : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
1390+ : "r" (&v->counter), "r" (i)
1391+ : "cc");
1392+}
1393+
1394+static inline void atomic64_sub_unchecked(long long i, atomic64_unchecked_t *v)
1395+{
1396+ long long result;
1397+ unsigned long tmp;
1398+
1399+ prefetchw(&v->counter);
1400+ __asm__ __volatile__("@ atomic64_sub_unchecked\n"
1401+"1: ldrexd %0, %H0, [%3]\n"
1402+" subs %Q0, %Q0, %Q4\n"
1403 " sbc %R0, %R0, %R4\n"
1404 " strexd %1, %0, %H0, [%3]\n"
1405 " teq %1, #0\n"
1406@@ -376,16 +736,29 @@ static inline long long atomic64_sub_return(long long i, atomic64_t *v)
1407 __asm__ __volatile__("@ atomic64_sub_return\n"
1408 "1: ldrexd %0, %H0, [%3]\n"
1409 " subs %Q0, %Q0, %Q4\n"
1410-" sbc %R0, %R0, %R4\n"
1411+" sbcs %R0, %R0, %R4\n"
1412+
1413+#ifdef CONFIG_PAX_REFCOUNT
1414+" bvc 3f\n"
1415+" mov %0, %1\n"
1416+" mov %H0, %H1\n"
1417+"2: bkpt 0xf103\n"
1418+"3:\n"
1419+#endif
1420+
1421 " strexd %1, %0, %H0, [%3]\n"
1422 " teq %1, #0\n"
1423 " bne 1b"
1424+
1425+#ifdef CONFIG_PAX_REFCOUNT
1426+"\n4:\n"
1427+ _ASM_EXTABLE(2b, 4b)
1428+#endif
1429+
1430 : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
1431 : "r" (&v->counter), "r" (i)
1432 : "cc");
1433
1434- smp_mb();
1435-
1436 return result;
1437 }
1438
1439@@ -415,6 +788,31 @@ static inline long long atomic64_cmpxchg(atomic64_t *ptr, long long old,
1440 return oldval;
1441 }
1442
1443+static inline long long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *ptr, long long old,
1444+ long long new)
1445+{
1446+ long long oldval;
1447+ unsigned long res;
1448+
1449+ smp_mb();
1450+
1451+ do {
1452+ __asm__ __volatile__("@ atomic64_cmpxchg_unchecked\n"
1453+ "ldrexd %1, %H1, [%3]\n"
1454+ "mov %0, #0\n"
1455+ "teq %1, %4\n"
1456+ "teqeq %H1, %H4\n"
1457+ "strexdeq %0, %5, %H5, [%3]"
1458+ : "=&r" (res), "=&r" (oldval), "+Qo" (ptr->counter)
1459+ : "r" (&ptr->counter), "r" (old), "r" (new)
1460+ : "cc");
1461+ } while (res);
1462+
1463+ smp_mb();
1464+
1465+ return oldval;
1466+}
1467+
1468 static inline long long atomic64_xchg(atomic64_t *ptr, long long new)
1469 {
1470 long long result;
1471@@ -440,21 +838,35 @@ static inline long long atomic64_xchg(atomic64_t *ptr, long long new)
1472 static inline long long atomic64_dec_if_positive(atomic64_t *v)
1473 {
1474 long long result;
1475- unsigned long tmp;
1476+ u64 tmp;
1477
1478 smp_mb();
1479 prefetchw(&v->counter);
1480
1481 __asm__ __volatile__("@ atomic64_dec_if_positive\n"
1482-"1: ldrexd %0, %H0, [%3]\n"
1483-" subs %Q0, %Q0, #1\n"
1484-" sbc %R0, %R0, #0\n"
1485+"1: ldrexd %1, %H1, [%3]\n"
1486+" subs %Q0, %Q1, #1\n"
1487+" sbcs %R0, %R1, #0\n"
1488+
1489+#ifdef CONFIG_PAX_REFCOUNT
1490+" bvc 3f\n"
1491+" mov %Q0, %Q1\n"
1492+" mov %R0, %R1\n"
1493+"2: bkpt 0xf103\n"
1494+"3:\n"
1495+#endif
1496+
1497 " teq %R0, #0\n"
1498-" bmi 2f\n"
1499+" bmi 4f\n"
1500 " strexd %1, %0, %H0, [%3]\n"
1501 " teq %1, #0\n"
1502 " bne 1b\n"
1503-"2:"
1504+"4:\n"
1505+
1506+#ifdef CONFIG_PAX_REFCOUNT
1507+ _ASM_EXTABLE(2b, 4b)
1508+#endif
1509+
1510 : "=&r" (result), "=&r" (tmp), "+Qo" (v->counter)
1511 : "r" (&v->counter)
1512 : "cc");
1513@@ -478,13 +890,25 @@ static inline int atomic64_add_unless(atomic64_t *v, long long a, long long u)
1514 " teq %0, %5\n"
1515 " teqeq %H0, %H5\n"
1516 " moveq %1, #0\n"
1517-" beq 2f\n"
1518+" beq 4f\n"
1519 " adds %Q0, %Q0, %Q6\n"
1520-" adc %R0, %R0, %R6\n"
1521+" adcs %R0, %R0, %R6\n"
1522+
1523+#ifdef CONFIG_PAX_REFCOUNT
1524+" bvc 3f\n"
1525+"2: bkpt 0xf103\n"
1526+"3:\n"
1527+#endif
1528+
1529 " strexd %2, %0, %H0, [%4]\n"
1530 " teq %2, #0\n"
1531 " bne 1b\n"
1532-"2:"
1533+"4:\n"
1534+
1535+#ifdef CONFIG_PAX_REFCOUNT
1536+ _ASM_EXTABLE(2b, 4b)
1537+#endif
1538+
1539 : "=&r" (val), "+r" (ret), "=&r" (tmp), "+Qo" (v->counter)
1540 : "r" (&v->counter), "r" (u), "r" (a)
1541 : "cc");
1542@@ -497,10 +921,13 @@ static inline int atomic64_add_unless(atomic64_t *v, long long a, long long u)
1543
1544 #define atomic64_add_negative(a, v) (atomic64_add_return((a), (v)) < 0)
1545 #define atomic64_inc(v) atomic64_add(1LL, (v))
1546+#define atomic64_inc_unchecked(v) atomic64_add_unchecked(1LL, (v))
1547 #define atomic64_inc_return(v) atomic64_add_return(1LL, (v))
1548+#define atomic64_inc_return_unchecked(v) atomic64_add_return_unchecked(1LL, (v))
1549 #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0)
1550 #define atomic64_sub_and_test(a, v) (atomic64_sub_return((a), (v)) == 0)
1551 #define atomic64_dec(v) atomic64_sub(1LL, (v))
1552+#define atomic64_dec_unchecked(v) atomic64_sub_unchecked(1LL, (v))
1553 #define atomic64_dec_return(v) atomic64_sub_return(1LL, (v))
1554 #define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0)
1555 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1LL, 0LL)
1556diff --git a/arch/arm/include/asm/barrier.h b/arch/arm/include/asm/barrier.h
1557index 2f59f74..1594659 100644
1558--- a/arch/arm/include/asm/barrier.h
1559+++ b/arch/arm/include/asm/barrier.h
1560@@ -63,7 +63,7 @@
1561 do { \
1562 compiletime_assert_atomic_type(*p); \
1563 smp_mb(); \
1564- ACCESS_ONCE(*p) = (v); \
1565+ ACCESS_ONCE_RW(*p) = (v); \
1566 } while (0)
1567
1568 #define smp_load_acquire(p) \
1569diff --git a/arch/arm/include/asm/cache.h b/arch/arm/include/asm/cache.h
1570index 75fe66b..ba3dee4 100644
1571--- a/arch/arm/include/asm/cache.h
1572+++ b/arch/arm/include/asm/cache.h
1573@@ -4,8 +4,10 @@
1574 #ifndef __ASMARM_CACHE_H
1575 #define __ASMARM_CACHE_H
1576
1577+#include <linux/const.h>
1578+
1579 #define L1_CACHE_SHIFT CONFIG_ARM_L1_CACHE_SHIFT
1580-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
1581+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
1582
1583 /*
1584 * Memory returned by kmalloc() may be used for DMA, so we must make
1585@@ -24,5 +26,6 @@
1586 #endif
1587
1588 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
1589+#define __read_only __attribute__ ((__section__(".data..read_only")))
1590
1591 #endif
1592diff --git a/arch/arm/include/asm/cacheflush.h b/arch/arm/include/asm/cacheflush.h
1593index 8b8b616..d973d24 100644
1594--- a/arch/arm/include/asm/cacheflush.h
1595+++ b/arch/arm/include/asm/cacheflush.h
1596@@ -116,7 +116,7 @@ struct cpu_cache_fns {
1597 void (*dma_unmap_area)(const void *, size_t, int);
1598
1599 void (*dma_flush_range)(const void *, const void *);
1600-};
1601+} __no_const;
1602
1603 /*
1604 * Select the calling method
1605diff --git a/arch/arm/include/asm/checksum.h b/arch/arm/include/asm/checksum.h
1606index 5233151..87a71fa 100644
1607--- a/arch/arm/include/asm/checksum.h
1608+++ b/arch/arm/include/asm/checksum.h
1609@@ -37,7 +37,19 @@ __wsum
1610 csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum);
1611
1612 __wsum
1613-csum_partial_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *err_ptr);
1614+__csum_partial_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *err_ptr);
1615+
1616+static inline __wsum
1617+csum_partial_copy_from_user(const void __user *src, void *dst, int len, __wsum sum, int *err_ptr)
1618+{
1619+ __wsum ret;
1620+ pax_open_userland();
1621+ ret = __csum_partial_copy_from_user(src, dst, len, sum, err_ptr);
1622+ pax_close_userland();
1623+ return ret;
1624+}
1625+
1626+
1627
1628 /*
1629 * Fold a partial checksum without adding pseudo headers
1630diff --git a/arch/arm/include/asm/cmpxchg.h b/arch/arm/include/asm/cmpxchg.h
1631index abb2c37..96db950 100644
1632--- a/arch/arm/include/asm/cmpxchg.h
1633+++ b/arch/arm/include/asm/cmpxchg.h
1634@@ -104,6 +104,8 @@ static inline unsigned long __xchg(unsigned long x, volatile void *ptr, int size
1635
1636 #define xchg(ptr,x) \
1637 ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
1638+#define xchg_unchecked(ptr,x) \
1639+ ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
1640
1641 #include <asm-generic/cmpxchg-local.h>
1642
1643diff --git a/arch/arm/include/asm/domain.h b/arch/arm/include/asm/domain.h
1644index 6ddbe44..b5e38b1 100644
1645--- a/arch/arm/include/asm/domain.h
1646+++ b/arch/arm/include/asm/domain.h
1647@@ -48,18 +48,37 @@
1648 * Domain types
1649 */
1650 #define DOMAIN_NOACCESS 0
1651-#define DOMAIN_CLIENT 1
1652 #ifdef CONFIG_CPU_USE_DOMAINS
1653+#define DOMAIN_USERCLIENT 1
1654+#define DOMAIN_KERNELCLIENT 1
1655 #define DOMAIN_MANAGER 3
1656+#define DOMAIN_VECTORS DOMAIN_USER
1657 #else
1658+
1659+#ifdef CONFIG_PAX_KERNEXEC
1660 #define DOMAIN_MANAGER 1
1661+#define DOMAIN_KERNEXEC 3
1662+#else
1663+#define DOMAIN_MANAGER 1
1664+#endif
1665+
1666+#ifdef CONFIG_PAX_MEMORY_UDEREF
1667+#define DOMAIN_USERCLIENT 0
1668+#define DOMAIN_UDEREF 1
1669+#define DOMAIN_VECTORS DOMAIN_KERNEL
1670+#else
1671+#define DOMAIN_USERCLIENT 1
1672+#define DOMAIN_VECTORS DOMAIN_USER
1673+#endif
1674+#define DOMAIN_KERNELCLIENT 1
1675+
1676 #endif
1677
1678 #define domain_val(dom,type) ((type) << (2*(dom)))
1679
1680 #ifndef __ASSEMBLY__
1681
1682-#ifdef CONFIG_CPU_USE_DOMAINS
1683+#if defined(CONFIG_CPU_USE_DOMAINS) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
1684 static inline void set_domain(unsigned val)
1685 {
1686 asm volatile(
1687@@ -68,15 +87,7 @@ static inline void set_domain(unsigned val)
1688 isb();
1689 }
1690
1691-#define modify_domain(dom,type) \
1692- do { \
1693- struct thread_info *thread = current_thread_info(); \
1694- unsigned int domain = thread->cpu_domain; \
1695- domain &= ~domain_val(dom, DOMAIN_MANAGER); \
1696- thread->cpu_domain = domain | domain_val(dom, type); \
1697- set_domain(thread->cpu_domain); \
1698- } while (0)
1699-
1700+extern void modify_domain(unsigned int dom, unsigned int type);
1701 #else
1702 static inline void set_domain(unsigned val) { }
1703 static inline void modify_domain(unsigned dom, unsigned type) { }
1704diff --git a/arch/arm/include/asm/elf.h b/arch/arm/include/asm/elf.h
1705index f4b46d3..abc9b2b 100644
1706--- a/arch/arm/include/asm/elf.h
1707+++ b/arch/arm/include/asm/elf.h
1708@@ -114,7 +114,14 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
1709 the loader. We need to make sure that it is out of the way of the program
1710 that it will "exec", and that there is sufficient room for the brk. */
1711
1712-#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
1713+#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
1714+
1715+#ifdef CONFIG_PAX_ASLR
1716+#define PAX_ELF_ET_DYN_BASE 0x00008000UL
1717+
1718+#define PAX_DELTA_MMAP_LEN ((current->personality == PER_LINUX_32BIT) ? 16 : 10)
1719+#define PAX_DELTA_STACK_LEN ((current->personality == PER_LINUX_32BIT) ? 16 : 10)
1720+#endif
1721
1722 /* When the program starts, a1 contains a pointer to a function to be
1723 registered with atexit, as per the SVR4 ABI. A value of 0 means we
1724@@ -124,10 +131,6 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
1725 extern void elf_set_personality(const struct elf32_hdr *);
1726 #define SET_PERSONALITY(ex) elf_set_personality(&(ex))
1727
1728-struct mm_struct;
1729-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
1730-#define arch_randomize_brk arch_randomize_brk
1731-
1732 #ifdef CONFIG_MMU
1733 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
1734 struct linux_binprm;
1735diff --git a/arch/arm/include/asm/fncpy.h b/arch/arm/include/asm/fncpy.h
1736index de53547..52b9a28 100644
1737--- a/arch/arm/include/asm/fncpy.h
1738+++ b/arch/arm/include/asm/fncpy.h
1739@@ -81,7 +81,9 @@
1740 BUG_ON((uintptr_t)(dest_buf) & (FNCPY_ALIGN - 1) || \
1741 (__funcp_address & ~(uintptr_t)1 & (FNCPY_ALIGN - 1))); \
1742 \
1743+ pax_open_kernel(); \
1744 memcpy(dest_buf, (void const *)(__funcp_address & ~1), size); \
1745+ pax_close_kernel(); \
1746 flush_icache_range((unsigned long)(dest_buf), \
1747 (unsigned long)(dest_buf) + (size)); \
1748 \
1749diff --git a/arch/arm/include/asm/futex.h b/arch/arm/include/asm/futex.h
1750index 53e69da..3fdc896 100644
1751--- a/arch/arm/include/asm/futex.h
1752+++ b/arch/arm/include/asm/futex.h
1753@@ -46,6 +46,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
1754 if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
1755 return -EFAULT;
1756
1757+ pax_open_userland();
1758+
1759 smp_mb();
1760 /* Prefetching cannot fault */
1761 prefetchw(uaddr);
1762@@ -63,6 +65,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
1763 : "cc", "memory");
1764 smp_mb();
1765
1766+ pax_close_userland();
1767+
1768 *uval = val;
1769 return ret;
1770 }
1771@@ -93,6 +97,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
1772 if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32)))
1773 return -EFAULT;
1774
1775+ pax_open_userland();
1776+
1777 __asm__ __volatile__("@futex_atomic_cmpxchg_inatomic\n"
1778 "1: " TUSER(ldr) " %1, [%4]\n"
1779 " teq %1, %2\n"
1780@@ -103,6 +109,8 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr,
1781 : "r" (oldval), "r" (newval), "r" (uaddr), "Ir" (-EFAULT)
1782 : "cc", "memory");
1783
1784+ pax_close_userland();
1785+
1786 *uval = val;
1787 return ret;
1788 }
1789@@ -125,6 +133,7 @@ futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
1790 return -EFAULT;
1791
1792 pagefault_disable(); /* implies preempt_disable() */
1793+ pax_open_userland();
1794
1795 switch (op) {
1796 case FUTEX_OP_SET:
1797@@ -146,6 +155,7 @@ futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr)
1798 ret = -ENOSYS;
1799 }
1800
1801+ pax_close_userland();
1802 pagefault_enable(); /* subsumes preempt_enable() */
1803
1804 if (!ret) {
1805diff --git a/arch/arm/include/asm/kmap_types.h b/arch/arm/include/asm/kmap_types.h
1806index 83eb2f7..ed77159 100644
1807--- a/arch/arm/include/asm/kmap_types.h
1808+++ b/arch/arm/include/asm/kmap_types.h
1809@@ -4,6 +4,6 @@
1810 /*
1811 * This is the "bare minimum". AIO seems to require this.
1812 */
1813-#define KM_TYPE_NR 16
1814+#define KM_TYPE_NR 17
1815
1816 #endif
1817diff --git a/arch/arm/include/asm/mach/dma.h b/arch/arm/include/asm/mach/dma.h
1818index 9e614a1..3302cca 100644
1819--- a/arch/arm/include/asm/mach/dma.h
1820+++ b/arch/arm/include/asm/mach/dma.h
1821@@ -22,7 +22,7 @@ struct dma_ops {
1822 int (*residue)(unsigned int, dma_t *); /* optional */
1823 int (*setspeed)(unsigned int, dma_t *, int); /* optional */
1824 const char *type;
1825-};
1826+} __do_const;
1827
1828 struct dma_struct {
1829 void *addr; /* single DMA address */
1830diff --git a/arch/arm/include/asm/mach/map.h b/arch/arm/include/asm/mach/map.h
1831index f98c7f3..e5c626d 100644
1832--- a/arch/arm/include/asm/mach/map.h
1833+++ b/arch/arm/include/asm/mach/map.h
1834@@ -23,17 +23,19 @@ struct map_desc {
1835
1836 /* types 0-3 are defined in asm/io.h */
1837 enum {
1838- MT_UNCACHED = 4,
1839- MT_CACHECLEAN,
1840- MT_MINICLEAN,
1841+ MT_UNCACHED_RW = 4,
1842+ MT_CACHECLEAN_RO,
1843+ MT_MINICLEAN_RO,
1844 MT_LOW_VECTORS,
1845 MT_HIGH_VECTORS,
1846- MT_MEMORY_RWX,
1847+ __MT_MEMORY_RWX,
1848 MT_MEMORY_RW,
1849- MT_ROM,
1850- MT_MEMORY_RWX_NONCACHED,
1851+ MT_MEMORY_RX,
1852+ MT_ROM_RX,
1853+ MT_MEMORY_RW_NONCACHED,
1854+ MT_MEMORY_RX_NONCACHED,
1855 MT_MEMORY_RW_DTCM,
1856- MT_MEMORY_RWX_ITCM,
1857+ MT_MEMORY_RX_ITCM,
1858 MT_MEMORY_RW_SO,
1859 MT_MEMORY_DMA_READY,
1860 };
1861diff --git a/arch/arm/include/asm/outercache.h b/arch/arm/include/asm/outercache.h
1862index f94784f..9a09a4a 100644
1863--- a/arch/arm/include/asm/outercache.h
1864+++ b/arch/arm/include/asm/outercache.h
1865@@ -35,7 +35,7 @@ struct outer_cache_fns {
1866 #endif
1867 void (*set_debug)(unsigned long);
1868 void (*resume)(void);
1869-};
1870+} __no_const;
1871
1872 extern struct outer_cache_fns outer_cache;
1873
1874diff --git a/arch/arm/include/asm/page.h b/arch/arm/include/asm/page.h
1875index 4355f0e..cd9168e 100644
1876--- a/arch/arm/include/asm/page.h
1877+++ b/arch/arm/include/asm/page.h
1878@@ -23,6 +23,7 @@
1879
1880 #else
1881
1882+#include <linux/compiler.h>
1883 #include <asm/glue.h>
1884
1885 /*
1886@@ -114,7 +115,7 @@ struct cpu_user_fns {
1887 void (*cpu_clear_user_highpage)(struct page *page, unsigned long vaddr);
1888 void (*cpu_copy_user_highpage)(struct page *to, struct page *from,
1889 unsigned long vaddr, struct vm_area_struct *vma);
1890-};
1891+} __no_const;
1892
1893 #ifdef MULTI_USER
1894 extern struct cpu_user_fns cpu_user;
1895diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h
1896index 78a7793..e3dc06c 100644
1897--- a/arch/arm/include/asm/pgalloc.h
1898+++ b/arch/arm/include/asm/pgalloc.h
1899@@ -17,6 +17,7 @@
1900 #include <asm/processor.h>
1901 #include <asm/cacheflush.h>
1902 #include <asm/tlbflush.h>
1903+#include <asm/system_info.h>
1904
1905 #define check_pgt_cache() do { } while (0)
1906
1907@@ -43,6 +44,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
1908 set_pud(pud, __pud(__pa(pmd) | PMD_TYPE_TABLE));
1909 }
1910
1911+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
1912+{
1913+ pud_populate(mm, pud, pmd);
1914+}
1915+
1916 #else /* !CONFIG_ARM_LPAE */
1917
1918 /*
1919@@ -51,6 +57,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
1920 #define pmd_alloc_one(mm,addr) ({ BUG(); ((pmd_t *)2); })
1921 #define pmd_free(mm, pmd) do { } while (0)
1922 #define pud_populate(mm,pmd,pte) BUG()
1923+#define pud_populate_kernel(mm,pmd,pte) BUG()
1924
1925 #endif /* CONFIG_ARM_LPAE */
1926
1927@@ -128,6 +135,19 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t pte)
1928 __free_page(pte);
1929 }
1930
1931+static inline void __section_update(pmd_t *pmdp, unsigned long addr, pmdval_t prot)
1932+{
1933+#ifdef CONFIG_ARM_LPAE
1934+ pmdp[0] = __pmd(pmd_val(pmdp[0]) | prot);
1935+#else
1936+ if (addr & SECTION_SIZE)
1937+ pmdp[1] = __pmd(pmd_val(pmdp[1]) | prot);
1938+ else
1939+ pmdp[0] = __pmd(pmd_val(pmdp[0]) | prot);
1940+#endif
1941+ flush_pmd_entry(pmdp);
1942+}
1943+
1944 static inline void __pmd_populate(pmd_t *pmdp, phys_addr_t pte,
1945 pmdval_t prot)
1946 {
1947@@ -157,7 +177,7 @@ pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmdp, pte_t *ptep)
1948 static inline void
1949 pmd_populate(struct mm_struct *mm, pmd_t *pmdp, pgtable_t ptep)
1950 {
1951- __pmd_populate(pmdp, page_to_phys(ptep), _PAGE_USER_TABLE);
1952+ __pmd_populate(pmdp, page_to_phys(ptep), _PAGE_USER_TABLE | __supported_pmd_mask);
1953 }
1954 #define pmd_pgtable(pmd) pmd_page(pmd)
1955
1956diff --git a/arch/arm/include/asm/pgtable-2level-hwdef.h b/arch/arm/include/asm/pgtable-2level-hwdef.h
1957index 5cfba15..f415e1a 100644
1958--- a/arch/arm/include/asm/pgtable-2level-hwdef.h
1959+++ b/arch/arm/include/asm/pgtable-2level-hwdef.h
1960@@ -20,12 +20,15 @@
1961 #define PMD_TYPE_FAULT (_AT(pmdval_t, 0) << 0)
1962 #define PMD_TYPE_TABLE (_AT(pmdval_t, 1) << 0)
1963 #define PMD_TYPE_SECT (_AT(pmdval_t, 2) << 0)
1964+#define PMD_PXNTABLE (_AT(pmdval_t, 1) << 2) /* v7 */
1965 #define PMD_BIT4 (_AT(pmdval_t, 1) << 4)
1966 #define PMD_DOMAIN(x) (_AT(pmdval_t, (x)) << 5)
1967 #define PMD_PROTECTION (_AT(pmdval_t, 1) << 9) /* v5 */
1968+
1969 /*
1970 * - section
1971 */
1972+#define PMD_SECT_PXN (_AT(pmdval_t, 1) << 0) /* v7 */
1973 #define PMD_SECT_BUFFERABLE (_AT(pmdval_t, 1) << 2)
1974 #define PMD_SECT_CACHEABLE (_AT(pmdval_t, 1) << 3)
1975 #define PMD_SECT_XN (_AT(pmdval_t, 1) << 4) /* v6 */
1976@@ -37,6 +40,7 @@
1977 #define PMD_SECT_nG (_AT(pmdval_t, 1) << 17) /* v6 */
1978 #define PMD_SECT_SUPER (_AT(pmdval_t, 1) << 18) /* v6 */
1979 #define PMD_SECT_AF (_AT(pmdval_t, 0))
1980+#define PMD_SECT_RDONLY (_AT(pmdval_t, 0))
1981
1982 #define PMD_SECT_UNCACHED (_AT(pmdval_t, 0))
1983 #define PMD_SECT_BUFFERED (PMD_SECT_BUFFERABLE)
1984@@ -66,6 +70,7 @@
1985 * - extended small page/tiny page
1986 */
1987 #define PTE_EXT_XN (_AT(pteval_t, 1) << 0) /* v6 */
1988+#define PTE_EXT_PXN (_AT(pteval_t, 1) << 2) /* v7 */
1989 #define PTE_EXT_AP_MASK (_AT(pteval_t, 3) << 4)
1990 #define PTE_EXT_AP0 (_AT(pteval_t, 1) << 4)
1991 #define PTE_EXT_AP1 (_AT(pteval_t, 2) << 4)
1992diff --git a/arch/arm/include/asm/pgtable-2level.h b/arch/arm/include/asm/pgtable-2level.h
1993index 219ac88..73ec32a 100644
1994--- a/arch/arm/include/asm/pgtable-2level.h
1995+++ b/arch/arm/include/asm/pgtable-2level.h
1996@@ -126,6 +126,9 @@
1997 #define L_PTE_SHARED (_AT(pteval_t, 1) << 10) /* shared(v6), coherent(xsc3) */
1998 #define L_PTE_NONE (_AT(pteval_t, 1) << 11)
1999
2000+/* Two-level page tables only have PXN in the PGD, not in the PTE. */
2001+#define L_PTE_PXN (_AT(pteval_t, 0))
2002+
2003 /*
2004 * These are the memory types, defined to be compatible with
2005 * pre-ARMv6 CPUs cacheable and bufferable bits: XXCB
2006diff --git a/arch/arm/include/asm/pgtable-3level-hwdef.h b/arch/arm/include/asm/pgtable-3level-hwdef.h
2007index 626989f..9d67a33 100644
2008--- a/arch/arm/include/asm/pgtable-3level-hwdef.h
2009+++ b/arch/arm/include/asm/pgtable-3level-hwdef.h
2010@@ -75,6 +75,7 @@
2011 #define PTE_EXT_SHARED (_AT(pteval_t, 3) << 8) /* SH[1:0], inner shareable */
2012 #define PTE_EXT_AF (_AT(pteval_t, 1) << 10) /* Access Flag */
2013 #define PTE_EXT_NG (_AT(pteval_t, 1) << 11) /* nG */
2014+#define PTE_EXT_PXN (_AT(pteval_t, 1) << 53) /* PXN */
2015 #define PTE_EXT_XN (_AT(pteval_t, 1) << 54) /* XN */
2016
2017 /*
2018diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
2019index 85c60ad..b0bbd7e 100644
2020--- a/arch/arm/include/asm/pgtable-3level.h
2021+++ b/arch/arm/include/asm/pgtable-3level.h
2022@@ -82,6 +82,7 @@
2023 #define L_PTE_RDONLY (_AT(pteval_t, 1) << 7) /* AP[2] */
2024 #define L_PTE_SHARED (_AT(pteval_t, 3) << 8) /* SH[1:0], inner shareable */
2025 #define L_PTE_YOUNG (_AT(pteval_t, 1) << 10) /* AF */
2026+#define L_PTE_PXN (_AT(pteval_t, 1) << 53) /* PXN */
2027 #define L_PTE_XN (_AT(pteval_t, 1) << 54) /* XN */
2028 #define L_PTE_DIRTY (_AT(pteval_t, 1) << 55) /* unused */
2029 #define L_PTE_SPECIAL (_AT(pteval_t, 1) << 56) /* unused */
2030@@ -95,6 +96,7 @@
2031 /*
2032 * To be used in assembly code with the upper page attributes.
2033 */
2034+#define L_PTE_PXN_HIGH (1 << (53 - 32))
2035 #define L_PTE_XN_HIGH (1 << (54 - 32))
2036 #define L_PTE_DIRTY_HIGH (1 << (55 - 32))
2037
2038diff --git a/arch/arm/include/asm/pgtable.h b/arch/arm/include/asm/pgtable.h
2039index 5478e5d..f5b5cb3 100644
2040--- a/arch/arm/include/asm/pgtable.h
2041+++ b/arch/arm/include/asm/pgtable.h
2042@@ -33,6 +33,9 @@
2043 #include <asm/pgtable-2level.h>
2044 #endif
2045
2046+#define ktla_ktva(addr) (addr)
2047+#define ktva_ktla(addr) (addr)
2048+
2049 /*
2050 * Just any arbitrary offset to the start of the vmalloc VM area: the
2051 * current 8MB value just means that there will be a 8MB "hole" after the
2052@@ -48,6 +51,9 @@
2053 #define LIBRARY_TEXT_START 0x0c000000
2054
2055 #ifndef __ASSEMBLY__
2056+extern pteval_t __supported_pte_mask;
2057+extern pmdval_t __supported_pmd_mask;
2058+
2059 extern void __pte_error(const char *file, int line, pte_t);
2060 extern void __pmd_error(const char *file, int line, pmd_t);
2061 extern void __pgd_error(const char *file, int line, pgd_t);
2062@@ -56,6 +62,48 @@ extern void __pgd_error(const char *file, int line, pgd_t);
2063 #define pmd_ERROR(pmd) __pmd_error(__FILE__, __LINE__, pmd)
2064 #define pgd_ERROR(pgd) __pgd_error(__FILE__, __LINE__, pgd)
2065
2066+#define __HAVE_ARCH_PAX_OPEN_KERNEL
2067+#define __HAVE_ARCH_PAX_CLOSE_KERNEL
2068+
2069+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
2070+#include <asm/domain.h>
2071+#include <linux/thread_info.h>
2072+#include <linux/preempt.h>
2073+
2074+static inline int test_domain(int domain, int domaintype)
2075+{
2076+ return ((current_thread_info()->cpu_domain) & domain_val(domain, 3)) == domain_val(domain, domaintype);
2077+}
2078+#endif
2079+
2080+#ifdef CONFIG_PAX_KERNEXEC
2081+static inline unsigned long pax_open_kernel(void) {
2082+#ifdef CONFIG_ARM_LPAE
2083+ /* TODO */
2084+#else
2085+ preempt_disable();
2086+ BUG_ON(test_domain(DOMAIN_KERNEL, DOMAIN_KERNEXEC));
2087+ modify_domain(DOMAIN_KERNEL, DOMAIN_KERNEXEC);
2088+#endif
2089+ return 0;
2090+}
2091+
2092+static inline unsigned long pax_close_kernel(void) {
2093+#ifdef CONFIG_ARM_LPAE
2094+ /* TODO */
2095+#else
2096+ BUG_ON(test_domain(DOMAIN_KERNEL, DOMAIN_MANAGER));
2097+ /* DOMAIN_MANAGER = "client" under KERNEXEC */
2098+ modify_domain(DOMAIN_KERNEL, DOMAIN_MANAGER);
2099+ preempt_enable_no_resched();
2100+#endif
2101+ return 0;
2102+}
2103+#else
2104+static inline unsigned long pax_open_kernel(void) { return 0; }
2105+static inline unsigned long pax_close_kernel(void) { return 0; }
2106+#endif
2107+
2108 /*
2109 * This is the lowest virtual address we can permit any user space
2110 * mapping to be mapped at. This is particularly important for
2111@@ -75,8 +123,8 @@ extern void __pgd_error(const char *file, int line, pgd_t);
2112 /*
2113 * The pgprot_* and protection_map entries will be fixed up in runtime
2114 * to include the cachable and bufferable bits based on memory policy,
2115- * as well as any architecture dependent bits like global/ASID and SMP
2116- * shared mapping bits.
2117+ * as well as any architecture dependent bits like global/ASID, PXN,
2118+ * and SMP shared mapping bits.
2119 */
2120 #define _L_PTE_DEFAULT L_PTE_PRESENT | L_PTE_YOUNG
2121
2122@@ -265,7 +313,7 @@ static inline pte_t pte_mkspecial(pte_t pte) { return pte; }
2123 static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
2124 {
2125 const pteval_t mask = L_PTE_XN | L_PTE_RDONLY | L_PTE_USER |
2126- L_PTE_NONE | L_PTE_VALID;
2127+ L_PTE_NONE | L_PTE_VALID | __supported_pte_mask;
2128 pte_val(pte) = (pte_val(pte) & ~mask) | (pgprot_val(newprot) & mask);
2129 return pte;
2130 }
2131diff --git a/arch/arm/include/asm/psci.h b/arch/arm/include/asm/psci.h
2132index c4ae171..ea0c0c2 100644
2133--- a/arch/arm/include/asm/psci.h
2134+++ b/arch/arm/include/asm/psci.h
2135@@ -29,7 +29,7 @@ struct psci_operations {
2136 int (*cpu_off)(struct psci_power_state state);
2137 int (*cpu_on)(unsigned long cpuid, unsigned long entry_point);
2138 int (*migrate)(unsigned long cpuid);
2139-};
2140+} __no_const;
2141
2142 extern struct psci_operations psci_ops;
2143 extern struct smp_operations psci_smp_ops;
2144diff --git a/arch/arm/include/asm/smp.h b/arch/arm/include/asm/smp.h
2145index 2ec765c..beb1fe16 100644
2146--- a/arch/arm/include/asm/smp.h
2147+++ b/arch/arm/include/asm/smp.h
2148@@ -113,7 +113,7 @@ struct smp_operations {
2149 int (*cpu_disable)(unsigned int cpu);
2150 #endif
2151 #endif
2152-};
2153+} __no_const;
2154
2155 struct of_cpu_method {
2156 const char *method;
2157diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h
2158index f989d7c..e8aa7f0 100644
2159--- a/arch/arm/include/asm/thread_info.h
2160+++ b/arch/arm/include/asm/thread_info.h
2161@@ -88,9 +88,9 @@ struct thread_info {
2162 .flags = 0, \
2163 .preempt_count = INIT_PREEMPT_COUNT, \
2164 .addr_limit = KERNEL_DS, \
2165- .cpu_domain = domain_val(DOMAIN_USER, DOMAIN_MANAGER) | \
2166- domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \
2167- domain_val(DOMAIN_IO, DOMAIN_CLIENT), \
2168+ .cpu_domain = domain_val(DOMAIN_USER, DOMAIN_USERCLIENT) | \
2169+ domain_val(DOMAIN_KERNEL, DOMAIN_KERNELCLIENT) | \
2170+ domain_val(DOMAIN_IO, DOMAIN_KERNELCLIENT), \
2171 .restart_block = { \
2172 .fn = do_no_restart_syscall, \
2173 }, \
2174@@ -158,7 +158,11 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *,
2175 #define TIF_SYSCALL_AUDIT 9
2176 #define TIF_SYSCALL_TRACEPOINT 10
2177 #define TIF_SECCOMP 11 /* seccomp syscall filtering active */
2178-#define TIF_NOHZ 12 /* in adaptive nohz mode */
2179+/* within 8 bits of TIF_SYSCALL_TRACE
2180+ * to meet flexible second operand requirements
2181+ */
2182+#define TIF_GRSEC_SETXID 12
2183+#define TIF_NOHZ 13 /* in adaptive nohz mode */
2184 #define TIF_USING_IWMMXT 17
2185 #define TIF_MEMDIE 18 /* is terminating due to OOM killer */
2186 #define TIF_RESTORE_SIGMASK 20
2187@@ -172,10 +176,11 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *,
2188 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
2189 #define _TIF_SECCOMP (1 << TIF_SECCOMP)
2190 #define _TIF_USING_IWMMXT (1 << TIF_USING_IWMMXT)
2191+#define _TIF_GRSEC_SETXID (1 << TIF_GRSEC_SETXID)
2192
2193 /* Checks for any syscall work in entry-common.S */
2194 #define _TIF_SYSCALL_WORK (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
2195- _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP)
2196+ _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | _TIF_GRSEC_SETXID)
2197
2198 /*
2199 * Change these and you break ASM code in entry-common.S
2200diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h
2201index 75d9579..b5b40e4 100644
2202--- a/arch/arm/include/asm/uaccess.h
2203+++ b/arch/arm/include/asm/uaccess.h
2204@@ -18,6 +18,7 @@
2205 #include <asm/domain.h>
2206 #include <asm/unified.h>
2207 #include <asm/compiler.h>
2208+#include <asm/pgtable.h>
2209
2210 #ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
2211 #include <asm-generic/uaccess-unaligned.h>
2212@@ -70,11 +71,38 @@ extern int __put_user_bad(void);
2213 static inline void set_fs(mm_segment_t fs)
2214 {
2215 current_thread_info()->addr_limit = fs;
2216- modify_domain(DOMAIN_KERNEL, fs ? DOMAIN_CLIENT : DOMAIN_MANAGER);
2217+ modify_domain(DOMAIN_KERNEL, fs ? DOMAIN_KERNELCLIENT : DOMAIN_MANAGER);
2218 }
2219
2220 #define segment_eq(a,b) ((a) == (b))
2221
2222+#define __HAVE_ARCH_PAX_OPEN_USERLAND
2223+#define __HAVE_ARCH_PAX_CLOSE_USERLAND
2224+
2225+static inline void pax_open_userland(void)
2226+{
2227+
2228+#ifdef CONFIG_PAX_MEMORY_UDEREF
2229+ if (segment_eq(get_fs(), USER_DS)) {
2230+ BUG_ON(test_domain(DOMAIN_USER, DOMAIN_UDEREF));
2231+ modify_domain(DOMAIN_USER, DOMAIN_UDEREF);
2232+ }
2233+#endif
2234+
2235+}
2236+
2237+static inline void pax_close_userland(void)
2238+{
2239+
2240+#ifdef CONFIG_PAX_MEMORY_UDEREF
2241+ if (segment_eq(get_fs(), USER_DS)) {
2242+ BUG_ON(test_domain(DOMAIN_USER, DOMAIN_NOACCESS));
2243+ modify_domain(DOMAIN_USER, DOMAIN_NOACCESS);
2244+ }
2245+#endif
2246+
2247+}
2248+
2249 #define __addr_ok(addr) ({ \
2250 unsigned long flag; \
2251 __asm__("cmp %2, %0; movlo %0, #0" \
2252@@ -150,8 +178,12 @@ extern int __get_user_4(void *);
2253
2254 #define get_user(x,p) \
2255 ({ \
2256+ int __e; \
2257 might_fault(); \
2258- __get_user_check(x,p); \
2259+ pax_open_userland(); \
2260+ __e = __get_user_check(x,p); \
2261+ pax_close_userland(); \
2262+ __e; \
2263 })
2264
2265 extern int __put_user_1(void *, unsigned int);
2266@@ -196,8 +228,12 @@ extern int __put_user_8(void *, unsigned long long);
2267
2268 #define put_user(x,p) \
2269 ({ \
2270+ int __e; \
2271 might_fault(); \
2272- __put_user_check(x,p); \
2273+ pax_open_userland(); \
2274+ __e = __put_user_check(x,p); \
2275+ pax_close_userland(); \
2276+ __e; \
2277 })
2278
2279 #else /* CONFIG_MMU */
2280@@ -221,6 +257,7 @@ static inline void set_fs(mm_segment_t fs)
2281
2282 #endif /* CONFIG_MMU */
2283
2284+#define access_ok_noprefault(type,addr,size) access_ok((type),(addr),(size))
2285 #define access_ok(type,addr,size) (__range_ok(addr,size) == 0)
2286
2287 #define user_addr_max() \
2288@@ -238,13 +275,17 @@ static inline void set_fs(mm_segment_t fs)
2289 #define __get_user(x,ptr) \
2290 ({ \
2291 long __gu_err = 0; \
2292+ pax_open_userland(); \
2293 __get_user_err((x),(ptr),__gu_err); \
2294+ pax_close_userland(); \
2295 __gu_err; \
2296 })
2297
2298 #define __get_user_error(x,ptr,err) \
2299 ({ \
2300+ pax_open_userland(); \
2301 __get_user_err((x),(ptr),err); \
2302+ pax_close_userland(); \
2303 (void) 0; \
2304 })
2305
2306@@ -320,13 +361,17 @@ do { \
2307 #define __put_user(x,ptr) \
2308 ({ \
2309 long __pu_err = 0; \
2310+ pax_open_userland(); \
2311 __put_user_err((x),(ptr),__pu_err); \
2312+ pax_close_userland(); \
2313 __pu_err; \
2314 })
2315
2316 #define __put_user_error(x,ptr,err) \
2317 ({ \
2318+ pax_open_userland(); \
2319 __put_user_err((x),(ptr),err); \
2320+ pax_close_userland(); \
2321 (void) 0; \
2322 })
2323
2324@@ -426,11 +471,44 @@ do { \
2325
2326
2327 #ifdef CONFIG_MMU
2328-extern unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n);
2329-extern unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n);
2330+extern unsigned long __must_check ___copy_from_user(void *to, const void __user *from, unsigned long n);
2331+extern unsigned long __must_check ___copy_to_user(void __user *to, const void *from, unsigned long n);
2332+
2333+static inline unsigned long __must_check __copy_from_user(void *to, const void __user *from, unsigned long n)
2334+{
2335+ unsigned long ret;
2336+
2337+ check_object_size(to, n, false);
2338+ pax_open_userland();
2339+ ret = ___copy_from_user(to, from, n);
2340+ pax_close_userland();
2341+ return ret;
2342+}
2343+
2344+static inline unsigned long __must_check __copy_to_user(void __user *to, const void *from, unsigned long n)
2345+{
2346+ unsigned long ret;
2347+
2348+ check_object_size(from, n, true);
2349+ pax_open_userland();
2350+ ret = ___copy_to_user(to, from, n);
2351+ pax_close_userland();
2352+ return ret;
2353+}
2354+
2355 extern unsigned long __must_check __copy_to_user_std(void __user *to, const void *from, unsigned long n);
2356-extern unsigned long __must_check __clear_user(void __user *addr, unsigned long n);
2357+extern unsigned long __must_check ___clear_user(void __user *addr, unsigned long n);
2358 extern unsigned long __must_check __clear_user_std(void __user *addr, unsigned long n);
2359+
2360+static inline unsigned long __must_check __clear_user(void __user *addr, unsigned long n)
2361+{
2362+ unsigned long ret;
2363+ pax_open_userland();
2364+ ret = ___clear_user(addr, n);
2365+ pax_close_userland();
2366+ return ret;
2367+}
2368+
2369 #else
2370 #define __copy_from_user(to,from,n) (memcpy(to, (void __force *)from, n), 0)
2371 #define __copy_to_user(to,from,n) (memcpy((void __force *)to, from, n), 0)
2372@@ -439,6 +517,9 @@ extern unsigned long __must_check __clear_user_std(void __user *addr, unsigned l
2373
2374 static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
2375 {
2376+ if ((long)n < 0)
2377+ return n;
2378+
2379 if (access_ok(VERIFY_READ, from, n))
2380 n = __copy_from_user(to, from, n);
2381 else /* security hole - plug it */
2382@@ -448,6 +529,9 @@ static inline unsigned long __must_check copy_from_user(void *to, const void __u
2383
2384 static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n)
2385 {
2386+ if ((long)n < 0)
2387+ return n;
2388+
2389 if (access_ok(VERIFY_WRITE, to, n))
2390 n = __copy_to_user(to, from, n);
2391 return n;
2392diff --git a/arch/arm/include/uapi/asm/ptrace.h b/arch/arm/include/uapi/asm/ptrace.h
2393index 5af0ed1..cea83883 100644
2394--- a/arch/arm/include/uapi/asm/ptrace.h
2395+++ b/arch/arm/include/uapi/asm/ptrace.h
2396@@ -92,7 +92,7 @@
2397 * ARMv7 groups of PSR bits
2398 */
2399 #define APSR_MASK 0xf80f0000 /* N, Z, C, V, Q and GE flags */
2400-#define PSR_ISET_MASK 0x01000010 /* ISA state (J, T) mask */
2401+#define PSR_ISET_MASK 0x01000020 /* ISA state (J, T) mask */
2402 #define PSR_IT_MASK 0x0600fc00 /* If-Then execution state mask */
2403 #define PSR_ENDIAN_MASK 0x00000200 /* Endianness state mask */
2404
2405diff --git a/arch/arm/kernel/armksyms.c b/arch/arm/kernel/armksyms.c
2406index f7b450f..f5364c5 100644
2407--- a/arch/arm/kernel/armksyms.c
2408+++ b/arch/arm/kernel/armksyms.c
2409@@ -55,7 +55,7 @@ EXPORT_SYMBOL(arm_delay_ops);
2410
2411 /* networking */
2412 EXPORT_SYMBOL(csum_partial);
2413-EXPORT_SYMBOL(csum_partial_copy_from_user);
2414+EXPORT_SYMBOL(__csum_partial_copy_from_user);
2415 EXPORT_SYMBOL(csum_partial_copy_nocheck);
2416 EXPORT_SYMBOL(__csum_ipv6_magic);
2417
2418@@ -91,9 +91,9 @@ EXPORT_SYMBOL(__memzero);
2419 #ifdef CONFIG_MMU
2420 EXPORT_SYMBOL(copy_page);
2421
2422-EXPORT_SYMBOL(__copy_from_user);
2423-EXPORT_SYMBOL(__copy_to_user);
2424-EXPORT_SYMBOL(__clear_user);
2425+EXPORT_SYMBOL(___copy_from_user);
2426+EXPORT_SYMBOL(___copy_to_user);
2427+EXPORT_SYMBOL(___clear_user);
2428
2429 EXPORT_SYMBOL(__get_user_1);
2430 EXPORT_SYMBOL(__get_user_2);
2431diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
2432index 1879e8d..b2207fc 100644
2433--- a/arch/arm/kernel/entry-armv.S
2434+++ b/arch/arm/kernel/entry-armv.S
2435@@ -47,6 +47,87 @@
2436 9997:
2437 .endm
2438
2439+ .macro pax_enter_kernel
2440+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
2441+ @ make aligned space for saved DACR
2442+ sub sp, sp, #8
2443+ @ save regs
2444+ stmdb sp!, {r1, r2}
2445+ @ read DACR from cpu_domain into r1
2446+ mov r2, sp
2447+ @ assume 8K pages, since we have to split the immediate in two
2448+ bic r2, r2, #(0x1fc0)
2449+ bic r2, r2, #(0x3f)
2450+ ldr r1, [r2, #TI_CPU_DOMAIN]
2451+ @ store old DACR on stack
2452+ str r1, [sp, #8]
2453+#ifdef CONFIG_PAX_KERNEXEC
2454+ @ set type of DOMAIN_KERNEL to DOMAIN_KERNELCLIENT
2455+ bic r1, r1, #(domain_val(DOMAIN_KERNEL, 3))
2456+ orr r1, r1, #(domain_val(DOMAIN_KERNEL, DOMAIN_KERNELCLIENT))
2457+#endif
2458+#ifdef CONFIG_PAX_MEMORY_UDEREF
2459+ @ set current DOMAIN_USER to DOMAIN_NOACCESS
2460+ bic r1, r1, #(domain_val(DOMAIN_USER, 3))
2461+#endif
2462+ @ write r1 to current_thread_info()->cpu_domain
2463+ str r1, [r2, #TI_CPU_DOMAIN]
2464+ @ write r1 to DACR
2465+ mcr p15, 0, r1, c3, c0, 0
2466+ @ instruction sync
2467+ instr_sync
2468+ @ restore regs
2469+ ldmia sp!, {r1, r2}
2470+#endif
2471+ .endm
2472+
2473+ .macro pax_open_userland
2474+#ifdef CONFIG_PAX_MEMORY_UDEREF
2475+ @ save regs
2476+ stmdb sp!, {r0, r1}
2477+ @ read DACR from cpu_domain into r1
2478+ mov r0, sp
2479+ @ assume 8K pages, since we have to split the immediate in two
2480+ bic r0, r0, #(0x1fc0)
2481+ bic r0, r0, #(0x3f)
2482+ ldr r1, [r0, #TI_CPU_DOMAIN]
2483+ @ set current DOMAIN_USER to DOMAIN_CLIENT
2484+ bic r1, r1, #(domain_val(DOMAIN_USER, 3))
2485+ orr r1, r1, #(domain_val(DOMAIN_USER, DOMAIN_UDEREF))
2486+ @ write r1 to current_thread_info()->cpu_domain
2487+ str r1, [r0, #TI_CPU_DOMAIN]
2488+ @ write r1 to DACR
2489+ mcr p15, 0, r1, c3, c0, 0
2490+ @ instruction sync
2491+ instr_sync
2492+ @ restore regs
2493+ ldmia sp!, {r0, r1}
2494+#endif
2495+ .endm
2496+
2497+ .macro pax_close_userland
2498+#ifdef CONFIG_PAX_MEMORY_UDEREF
2499+ @ save regs
2500+ stmdb sp!, {r0, r1}
2501+ @ read DACR from cpu_domain into r1
2502+ mov r0, sp
2503+ @ assume 8K pages, since we have to split the immediate in two
2504+ bic r0, r0, #(0x1fc0)
2505+ bic r0, r0, #(0x3f)
2506+ ldr r1, [r0, #TI_CPU_DOMAIN]
2507+ @ set current DOMAIN_USER to DOMAIN_NOACCESS
2508+ bic r1, r1, #(domain_val(DOMAIN_USER, 3))
2509+ @ write r1 to current_thread_info()->cpu_domain
2510+ str r1, [r0, #TI_CPU_DOMAIN]
2511+ @ write r1 to DACR
2512+ mcr p15, 0, r1, c3, c0, 0
2513+ @ instruction sync
2514+ instr_sync
2515+ @ restore regs
2516+ ldmia sp!, {r0, r1}
2517+#endif
2518+ .endm
2519+
2520 .macro pabt_helper
2521 @ PABORT handler takes pt_regs in r2, fault address in r4 and psr in r5
2522 #ifdef MULTI_PABORT
2523@@ -89,11 +170,15 @@
2524 * Invalid mode handlers
2525 */
2526 .macro inv_entry, reason
2527+
2528+ pax_enter_kernel
2529+
2530 sub sp, sp, #S_FRAME_SIZE
2531 ARM( stmib sp, {r1 - lr} )
2532 THUMB( stmia sp, {r0 - r12} )
2533 THUMB( str sp, [sp, #S_SP] )
2534 THUMB( str lr, [sp, #S_LR] )
2535+
2536 mov r1, #\reason
2537 .endm
2538
2539@@ -149,7 +234,11 @@ ENDPROC(__und_invalid)
2540 .macro svc_entry, stack_hole=0
2541 UNWIND(.fnstart )
2542 UNWIND(.save {r0 - pc} )
2543+
2544+ pax_enter_kernel
2545+
2546 sub sp, sp, #(S_FRAME_SIZE + \stack_hole - 4)
2547+
2548 #ifdef CONFIG_THUMB2_KERNEL
2549 SPFIX( str r0, [sp] ) @ temporarily saved
2550 SPFIX( mov r0, sp )
2551@@ -164,7 +253,12 @@ ENDPROC(__und_invalid)
2552 ldmia r0, {r3 - r5}
2553 add r7, sp, #S_SP - 4 @ here for interlock avoidance
2554 mov r6, #-1 @ "" "" "" ""
2555+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
2556+ @ offset sp by 8 as done in pax_enter_kernel
2557+ add r2, sp, #(S_FRAME_SIZE + \stack_hole + 4)
2558+#else
2559 add r2, sp, #(S_FRAME_SIZE + \stack_hole - 4)
2560+#endif
2561 SPFIX( addeq r2, r2, #4 )
2562 str r3, [sp, #-4]! @ save the "real" r0 copied
2563 @ from the exception stack
2564@@ -317,6 +411,9 @@ ENDPROC(__pabt_svc)
2565 .macro usr_entry
2566 UNWIND(.fnstart )
2567 UNWIND(.cantunwind ) @ don't unwind the user space
2568+
2569+ pax_enter_kernel_user
2570+
2571 sub sp, sp, #S_FRAME_SIZE
2572 ARM( stmib sp, {r1 - r12} )
2573 THUMB( stmia sp, {r0 - r12} )
2574@@ -416,7 +513,9 @@ __und_usr:
2575 tst r3, #PSR_T_BIT @ Thumb mode?
2576 bne __und_usr_thumb
2577 sub r4, r2, #4 @ ARM instr at LR - 4
2578+ pax_open_userland
2579 1: ldrt r0, [r4]
2580+ pax_close_userland
2581 ARM_BE8(rev r0, r0) @ little endian instruction
2582
2583 @ r0 = 32-bit ARM instruction which caused the exception
2584@@ -450,11 +549,15 @@ __und_usr_thumb:
2585 */
2586 .arch armv6t2
2587 #endif
2588+ pax_open_userland
2589 2: ldrht r5, [r4]
2590+ pax_close_userland
2591 ARM_BE8(rev16 r5, r5) @ little endian instruction
2592 cmp r5, #0xe800 @ 32bit instruction if xx != 0
2593 blo __und_usr_fault_16 @ 16bit undefined instruction
2594+ pax_open_userland
2595 3: ldrht r0, [r2]
2596+ pax_close_userland
2597 ARM_BE8(rev16 r0, r0) @ little endian instruction
2598 add r2, r2, #2 @ r2 is PC + 2, make it PC + 4
2599 str r2, [sp, #S_PC] @ it's a 2x16bit instr, update
2600@@ -484,7 +587,8 @@ ENDPROC(__und_usr)
2601 */
2602 .pushsection .fixup, "ax"
2603 .align 2
2604-4: mov pc, r9
2605+4: pax_close_userland
2606+ mov pc, r9
2607 .popsection
2608 .pushsection __ex_table,"a"
2609 .long 1b, 4b
2610@@ -694,7 +798,7 @@ ENTRY(__switch_to)
2611 THUMB( str lr, [ip], #4 )
2612 ldr r4, [r2, #TI_TP_VALUE]
2613 ldr r5, [r2, #TI_TP_VALUE + 4]
2614-#ifdef CONFIG_CPU_USE_DOMAINS
2615+#if defined(CONFIG_CPU_USE_DOMAINS) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
2616 ldr r6, [r2, #TI_CPU_DOMAIN]
2617 #endif
2618 switch_tls r1, r4, r5, r3, r7
2619@@ -703,7 +807,7 @@ ENTRY(__switch_to)
2620 ldr r8, =__stack_chk_guard
2621 ldr r7, [r7, #TSK_STACK_CANARY]
2622 #endif
2623-#ifdef CONFIG_CPU_USE_DOMAINS
2624+#if defined(CONFIG_CPU_USE_DOMAINS) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
2625 mcr p15, 0, r6, c3, c0, 0 @ Set domain register
2626 #endif
2627 mov r5, r0
2628diff --git a/arch/arm/kernel/entry-common.S b/arch/arm/kernel/entry-common.S
2629index a2dcafd..1048b5a 100644
2630--- a/arch/arm/kernel/entry-common.S
2631+++ b/arch/arm/kernel/entry-common.S
2632@@ -10,18 +10,46 @@
2633
2634 #include <asm/unistd.h>
2635 #include <asm/ftrace.h>
2636+#include <asm/domain.h>
2637 #include <asm/unwind.h>
2638
2639+#include "entry-header.S"
2640+
2641 #ifdef CONFIG_NEED_RET_TO_USER
2642 #include <mach/entry-macro.S>
2643 #else
2644 .macro arch_ret_to_user, tmp1, tmp2
2645+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
2646+ @ save regs
2647+ stmdb sp!, {r1, r2}
2648+ @ read DACR from cpu_domain into r1
2649+ mov r2, sp
2650+ @ assume 8K pages, since we have to split the immediate in two
2651+ bic r2, r2, #(0x1fc0)
2652+ bic r2, r2, #(0x3f)
2653+ ldr r1, [r2, #TI_CPU_DOMAIN]
2654+#ifdef CONFIG_PAX_KERNEXEC
2655+ @ set type of DOMAIN_KERNEL to DOMAIN_KERNELCLIENT
2656+ bic r1, r1, #(domain_val(DOMAIN_KERNEL, 3))
2657+ orr r1, r1, #(domain_val(DOMAIN_KERNEL, DOMAIN_KERNELCLIENT))
2658+#endif
2659+#ifdef CONFIG_PAX_MEMORY_UDEREF
2660+ @ set current DOMAIN_USER to DOMAIN_UDEREF
2661+ bic r1, r1, #(domain_val(DOMAIN_USER, 3))
2662+ orr r1, r1, #(domain_val(DOMAIN_USER, DOMAIN_UDEREF))
2663+#endif
2664+ @ write r1 to current_thread_info()->cpu_domain
2665+ str r1, [r2, #TI_CPU_DOMAIN]
2666+ @ write r1 to DACR
2667+ mcr p15, 0, r1, c3, c0, 0
2668+ @ instruction sync
2669+ instr_sync
2670+ @ restore regs
2671+ ldmia sp!, {r1, r2}
2672+#endif
2673 .endm
2674 #endif
2675
2676-#include "entry-header.S"
2677-
2678-
2679 .align 5
2680 /*
2681 * This is the fast syscall return path. We do as little as
2682@@ -411,6 +439,12 @@ ENTRY(vector_swi)
2683 USER( ldr scno, [lr, #-4] ) @ get SWI instruction
2684 #endif
2685
2686+ /*
2687+ * do this here to avoid a performance hit of wrapping the code above
2688+ * that directly dereferences userland to parse the SWI instruction
2689+ */
2690+ pax_enter_kernel_user
2691+
2692 adr tbl, sys_call_table @ load syscall table pointer
2693
2694 #if defined(CONFIG_OABI_COMPAT)
2695diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
2696index efb208d..d34bd02 100644
2697--- a/arch/arm/kernel/entry-header.S
2698+++ b/arch/arm/kernel/entry-header.S
2699@@ -188,6 +188,60 @@
2700 msr cpsr_c, \rtemp @ switch back to the SVC mode
2701 .endm
2702
2703+ .macro pax_enter_kernel_user
2704+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
2705+ @ save regs
2706+ stmdb sp!, {r0, r1}
2707+ @ read DACR from cpu_domain into r1
2708+ mov r0, sp
2709+ @ assume 8K pages, since we have to split the immediate in two
2710+ bic r0, r0, #(0x1fc0)
2711+ bic r0, r0, #(0x3f)
2712+ ldr r1, [r0, #TI_CPU_DOMAIN]
2713+#ifdef CONFIG_PAX_MEMORY_UDEREF
2714+ @ set current DOMAIN_USER to DOMAIN_NOACCESS
2715+ bic r1, r1, #(domain_val(DOMAIN_USER, 3))
2716+#endif
2717+#ifdef CONFIG_PAX_KERNEXEC
2718+ @ set current DOMAIN_KERNEL to DOMAIN_KERNELCLIENT
2719+ bic r1, r1, #(domain_val(DOMAIN_KERNEL, 3))
2720+ orr r1, r1, #(domain_val(DOMAIN_KERNEL, DOMAIN_KERNELCLIENT))
2721+#endif
2722+ @ write r1 to current_thread_info()->cpu_domain
2723+ str r1, [r0, #TI_CPU_DOMAIN]
2724+ @ write r1 to DACR
2725+ mcr p15, 0, r1, c3, c0, 0
2726+ @ instruction sync
2727+ instr_sync
2728+ @ restore regs
2729+ ldmia sp!, {r0, r1}
2730+#endif
2731+ .endm
2732+
2733+ .macro pax_exit_kernel
2734+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
2735+ @ save regs
2736+ stmdb sp!, {r0, r1}
2737+ @ read old DACR from stack into r1
2738+ ldr r1, [sp, #(8 + S_SP)]
2739+ sub r1, r1, #8
2740+ ldr r1, [r1]
2741+
2742+ @ write r1 to current_thread_info()->cpu_domain
2743+ mov r0, sp
2744+ @ assume 8K pages, since we have to split the immediate in two
2745+ bic r0, r0, #(0x1fc0)
2746+ bic r0, r0, #(0x3f)
2747+ str r1, [r0, #TI_CPU_DOMAIN]
2748+ @ write r1 to DACR
2749+ mcr p15, 0, r1, c3, c0, 0
2750+ @ instruction sync
2751+ instr_sync
2752+ @ restore regs
2753+ ldmia sp!, {r0, r1}
2754+#endif
2755+ .endm
2756+
2757 #ifndef CONFIG_THUMB2_KERNEL
2758 .macro svc_exit, rpsr, irq = 0
2759 .if \irq != 0
2760@@ -207,6 +261,9 @@
2761 blne trace_hardirqs_off
2762 #endif
2763 .endif
2764+
2765+ pax_exit_kernel
2766+
2767 msr spsr_cxsf, \rpsr
2768 #if defined(CONFIG_CPU_V6)
2769 ldr r0, [sp]
2770@@ -265,6 +322,9 @@
2771 blne trace_hardirqs_off
2772 #endif
2773 .endif
2774+
2775+ pax_exit_kernel
2776+
2777 ldr lr, [sp, #S_SP] @ top of the stack
2778 ldrd r0, r1, [sp, #S_LR] @ calling lr and pc
2779 clrex @ clear the exclusive monitor
2780diff --git a/arch/arm/kernel/fiq.c b/arch/arm/kernel/fiq.c
2781index 918875d..cd5fa27 100644
2782--- a/arch/arm/kernel/fiq.c
2783+++ b/arch/arm/kernel/fiq.c
2784@@ -87,7 +87,10 @@ void set_fiq_handler(void *start, unsigned int length)
2785 void *base = vectors_page;
2786 unsigned offset = FIQ_OFFSET;
2787
2788+ pax_open_kernel();
2789 memcpy(base + offset, start, length);
2790+ pax_close_kernel();
2791+
2792 if (!cache_is_vipt_nonaliasing())
2793 flush_icache_range((unsigned long)base + offset, offset +
2794 length);
2795diff --git a/arch/arm/kernel/head.S b/arch/arm/kernel/head.S
2796index 591d6e4..8322a26 100644
2797--- a/arch/arm/kernel/head.S
2798+++ b/arch/arm/kernel/head.S
2799@@ -437,7 +437,7 @@ __enable_mmu:
2800 mov r5, #(domain_val(DOMAIN_USER, DOMAIN_MANAGER) | \
2801 domain_val(DOMAIN_KERNEL, DOMAIN_MANAGER) | \
2802 domain_val(DOMAIN_TABLE, DOMAIN_MANAGER) | \
2803- domain_val(DOMAIN_IO, DOMAIN_CLIENT))
2804+ domain_val(DOMAIN_IO, DOMAIN_KERNELCLIENT))
2805 mcr p15, 0, r5, c3, c0, 0 @ load domain access register
2806 mcr p15, 0, r4, c2, c0, 0 @ load page table pointer
2807 #endif
2808diff --git a/arch/arm/kernel/module.c b/arch/arm/kernel/module.c
2809index 45e4781..8eac93d 100644
2810--- a/arch/arm/kernel/module.c
2811+++ b/arch/arm/kernel/module.c
2812@@ -38,12 +38,39 @@
2813 #endif
2814
2815 #ifdef CONFIG_MMU
2816-void *module_alloc(unsigned long size)
2817+static inline void *__module_alloc(unsigned long size, pgprot_t prot)
2818 {
2819+ if (!size || PAGE_ALIGN(size) > MODULES_END - MODULES_VADDR)
2820+ return NULL;
2821 return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END,
2822- GFP_KERNEL, PAGE_KERNEL_EXEC, NUMA_NO_NODE,
2823+ GFP_KERNEL, prot, NUMA_NO_NODE,
2824 __builtin_return_address(0));
2825 }
2826+
2827+void *module_alloc(unsigned long size)
2828+{
2829+
2830+#ifdef CONFIG_PAX_KERNEXEC
2831+ return __module_alloc(size, PAGE_KERNEL);
2832+#else
2833+ return __module_alloc(size, PAGE_KERNEL_EXEC);
2834+#endif
2835+
2836+}
2837+
2838+#ifdef CONFIG_PAX_KERNEXEC
2839+void module_free_exec(struct module *mod, void *module_region)
2840+{
2841+ module_free(mod, module_region);
2842+}
2843+EXPORT_SYMBOL(module_free_exec);
2844+
2845+void *module_alloc_exec(unsigned long size)
2846+{
2847+ return __module_alloc(size, PAGE_KERNEL_EXEC);
2848+}
2849+EXPORT_SYMBOL(module_alloc_exec);
2850+#endif
2851 #endif
2852
2853 int
2854diff --git a/arch/arm/kernel/patch.c b/arch/arm/kernel/patch.c
2855index 07314af..c46655c 100644
2856--- a/arch/arm/kernel/patch.c
2857+++ b/arch/arm/kernel/patch.c
2858@@ -18,6 +18,7 @@ void __kprobes __patch_text(void *addr, unsigned int insn)
2859 bool thumb2 = IS_ENABLED(CONFIG_THUMB2_KERNEL);
2860 int size;
2861
2862+ pax_open_kernel();
2863 if (thumb2 && __opcode_is_thumb16(insn)) {
2864 *(u16 *)addr = __opcode_to_mem_thumb16(insn);
2865 size = sizeof(u16);
2866@@ -39,6 +40,7 @@ void __kprobes __patch_text(void *addr, unsigned int insn)
2867 *(u32 *)addr = insn;
2868 size = sizeof(u32);
2869 }
2870+ pax_close_kernel();
2871
2872 flush_icache_range((uintptr_t)(addr),
2873 (uintptr_t)(addr) + size);
2874diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
2875index 81ef686..f4130b8 100644
2876--- a/arch/arm/kernel/process.c
2877+++ b/arch/arm/kernel/process.c
2878@@ -212,6 +212,7 @@ void machine_power_off(void)
2879
2880 if (pm_power_off)
2881 pm_power_off();
2882+ BUG();
2883 }
2884
2885 /*
2886@@ -225,7 +226,7 @@ void machine_power_off(void)
2887 * executing pre-reset code, and using RAM that the primary CPU's code wishes
2888 * to use. Implementing such co-ordination would be essentially impossible.
2889 */
2890-void machine_restart(char *cmd)
2891+__noreturn void machine_restart(char *cmd)
2892 {
2893 local_irq_disable();
2894 smp_send_stop();
2895@@ -248,8 +249,8 @@ void __show_regs(struct pt_regs *regs)
2896
2897 show_regs_print_info(KERN_DEFAULT);
2898
2899- print_symbol("PC is at %s\n", instruction_pointer(regs));
2900- print_symbol("LR is at %s\n", regs->ARM_lr);
2901+ printk("PC is at %pA\n", (void *)instruction_pointer(regs));
2902+ printk("LR is at %pA\n", (void *)regs->ARM_lr);
2903 printk("pc : [<%08lx>] lr : [<%08lx>] psr: %08lx\n"
2904 "sp : %08lx ip : %08lx fp : %08lx\n",
2905 regs->ARM_pc, regs->ARM_lr, regs->ARM_cpsr,
2906@@ -425,12 +426,6 @@ unsigned long get_wchan(struct task_struct *p)
2907 return 0;
2908 }
2909
2910-unsigned long arch_randomize_brk(struct mm_struct *mm)
2911-{
2912- unsigned long range_end = mm->brk + 0x02000000;
2913- return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
2914-}
2915-
2916 #ifdef CONFIG_MMU
2917 #ifdef CONFIG_KUSER_HELPERS
2918 /*
2919@@ -446,7 +441,7 @@ static struct vm_area_struct gate_vma = {
2920
2921 static int __init gate_vma_init(void)
2922 {
2923- gate_vma.vm_page_prot = PAGE_READONLY_EXEC;
2924+ gate_vma.vm_page_prot = vm_get_page_prot(gate_vma.vm_flags);
2925 return 0;
2926 }
2927 arch_initcall(gate_vma_init);
2928@@ -472,41 +467,16 @@ int in_gate_area_no_mm(unsigned long addr)
2929
2930 const char *arch_vma_name(struct vm_area_struct *vma)
2931 {
2932- return is_gate_vma(vma) ? "[vectors]" :
2933- (vma->vm_mm && vma->vm_start == vma->vm_mm->context.sigpage) ?
2934- "[sigpage]" : NULL;
2935+ return is_gate_vma(vma) ? "[vectors]" : NULL;
2936 }
2937
2938-static struct page *signal_page;
2939-extern struct page *get_signal_page(void);
2940-
2941 int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
2942 {
2943 struct mm_struct *mm = current->mm;
2944- unsigned long addr;
2945- int ret;
2946-
2947- if (!signal_page)
2948- signal_page = get_signal_page();
2949- if (!signal_page)
2950- return -ENOMEM;
2951
2952 down_write(&mm->mmap_sem);
2953- addr = get_unmapped_area(NULL, 0, PAGE_SIZE, 0, 0);
2954- if (IS_ERR_VALUE(addr)) {
2955- ret = addr;
2956- goto up_fail;
2957- }
2958-
2959- ret = install_special_mapping(mm, addr, PAGE_SIZE,
2960- VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC,
2961- &signal_page);
2962-
2963- if (ret == 0)
2964- mm->context.sigpage = addr;
2965-
2966- up_fail:
2967+ mm->context.sigpage = (PAGE_OFFSET + (get_random_int() % 0x3FFEFFE0)) & 0xFFFFFFFC;
2968 up_write(&mm->mmap_sem);
2969- return ret;
2970+ return 0;
2971 }
2972 #endif
2973diff --git a/arch/arm/kernel/psci.c b/arch/arm/kernel/psci.c
2974index 4693188..4596c5e 100644
2975--- a/arch/arm/kernel/psci.c
2976+++ b/arch/arm/kernel/psci.c
2977@@ -24,7 +24,7 @@
2978 #include <asm/opcodes-virt.h>
2979 #include <asm/psci.h>
2980
2981-struct psci_operations psci_ops;
2982+struct psci_operations psci_ops __read_only;
2983
2984 static int (*invoke_psci_fn)(u32, u32, u32, u32);
2985
2986diff --git a/arch/arm/kernel/ptrace.c b/arch/arm/kernel/ptrace.c
2987index 0dd3b79..b67388e 100644
2988--- a/arch/arm/kernel/ptrace.c
2989+++ b/arch/arm/kernel/ptrace.c
2990@@ -908,7 +908,7 @@ enum ptrace_syscall_dir {
2991 PTRACE_SYSCALL_EXIT,
2992 };
2993
2994-static int tracehook_report_syscall(struct pt_regs *regs,
2995+static void tracehook_report_syscall(struct pt_regs *regs,
2996 enum ptrace_syscall_dir dir)
2997 {
2998 unsigned long ip;
2999@@ -926,19 +926,29 @@ static int tracehook_report_syscall(struct pt_regs *regs,
3000 current_thread_info()->syscall = -1;
3001
3002 regs->ARM_ip = ip;
3003- return current_thread_info()->syscall;
3004 }
3005
3006+#ifdef CONFIG_GRKERNSEC_SETXID
3007+extern void gr_delayed_cred_worker(void);
3008+#endif
3009+
3010 asmlinkage int syscall_trace_enter(struct pt_regs *regs, int scno)
3011 {
3012 current_thread_info()->syscall = scno;
3013
3014+#ifdef CONFIG_GRKERNSEC_SETXID
3015+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
3016+ gr_delayed_cred_worker();
3017+#endif
3018+
3019 /* Do the secure computing check first; failures should be fast. */
3020 if (secure_computing(scno) == -1)
3021 return -1;
3022
3023 if (test_thread_flag(TIF_SYSCALL_TRACE))
3024- scno = tracehook_report_syscall(regs, PTRACE_SYSCALL_ENTER);
3025+ tracehook_report_syscall(regs, PTRACE_SYSCALL_ENTER);
3026+
3027+ scno = current_thread_info()->syscall;
3028
3029 if (test_thread_flag(TIF_SYSCALL_TRACEPOINT))
3030 trace_sys_enter(regs, scno);
3031diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
3032index 50e198c..a8b5f49 100644
3033--- a/arch/arm/kernel/setup.c
3034+++ b/arch/arm/kernel/setup.c
3035@@ -103,21 +103,23 @@ EXPORT_SYMBOL(elf_hwcap);
3036 unsigned int elf_hwcap2 __read_mostly;
3037 EXPORT_SYMBOL(elf_hwcap2);
3038
3039+pteval_t __supported_pte_mask __read_only;
3040+pmdval_t __supported_pmd_mask __read_only;
3041
3042 #ifdef MULTI_CPU
3043-struct processor processor __read_mostly;
3044+struct processor processor __read_only;
3045 #endif
3046 #ifdef MULTI_TLB
3047-struct cpu_tlb_fns cpu_tlb __read_mostly;
3048+struct cpu_tlb_fns cpu_tlb __read_only;
3049 #endif
3050 #ifdef MULTI_USER
3051-struct cpu_user_fns cpu_user __read_mostly;
3052+struct cpu_user_fns cpu_user __read_only;
3053 #endif
3054 #ifdef MULTI_CACHE
3055-struct cpu_cache_fns cpu_cache __read_mostly;
3056+struct cpu_cache_fns cpu_cache __read_only;
3057 #endif
3058 #ifdef CONFIG_OUTER_CACHE
3059-struct outer_cache_fns outer_cache __read_mostly;
3060+struct outer_cache_fns outer_cache __read_only;
3061 EXPORT_SYMBOL(outer_cache);
3062 #endif
3063
3064@@ -250,9 +252,13 @@ static int __get_cpu_architecture(void)
3065 asm("mrc p15, 0, %0, c0, c1, 4"
3066 : "=r" (mmfr0));
3067 if ((mmfr0 & 0x0000000f) >= 0x00000003 ||
3068- (mmfr0 & 0x000000f0) >= 0x00000030)
3069+ (mmfr0 & 0x000000f0) >= 0x00000030) {
3070 cpu_arch = CPU_ARCH_ARMv7;
3071- else if ((mmfr0 & 0x0000000f) == 0x00000002 ||
3072+ if ((mmfr0 & 0x0000000f) == 0x00000005 || (mmfr0 & 0x0000000f) == 0x00000004) {
3073+ __supported_pte_mask |= L_PTE_PXN;
3074+ __supported_pmd_mask |= PMD_PXNTABLE;
3075+ }
3076+ } else if ((mmfr0 & 0x0000000f) == 0x00000002 ||
3077 (mmfr0 & 0x000000f0) == 0x00000020)
3078 cpu_arch = CPU_ARCH_ARMv6;
3079 else
3080diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
3081index bd19834..e4d8c66 100644
3082--- a/arch/arm/kernel/signal.c
3083+++ b/arch/arm/kernel/signal.c
3084@@ -24,8 +24,6 @@
3085
3086 extern const unsigned long sigreturn_codes[7];
3087
3088-static unsigned long signal_return_offset;
3089-
3090 #ifdef CONFIG_CRUNCH
3091 static int preserve_crunch_context(struct crunch_sigframe __user *frame)
3092 {
3093@@ -396,8 +394,7 @@ setup_return(struct pt_regs *regs, struct ksignal *ksig,
3094 * except when the MPU has protected the vectors
3095 * page from PL0
3096 */
3097- retcode = mm->context.sigpage + signal_return_offset +
3098- (idx << 2) + thumb;
3099+ retcode = mm->context.sigpage + (idx << 2) + thumb;
3100 } else
3101 #endif
3102 {
3103@@ -604,33 +601,3 @@ do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)
3104 } while (thread_flags & _TIF_WORK_MASK);
3105 return 0;
3106 }
3107-
3108-struct page *get_signal_page(void)
3109-{
3110- unsigned long ptr;
3111- unsigned offset;
3112- struct page *page;
3113- void *addr;
3114-
3115- page = alloc_pages(GFP_KERNEL, 0);
3116-
3117- if (!page)
3118- return NULL;
3119-
3120- addr = page_address(page);
3121-
3122- /* Give the signal return code some randomness */
3123- offset = 0x200 + (get_random_int() & 0x7fc);
3124- signal_return_offset = offset;
3125-
3126- /*
3127- * Copy signal return handlers into the vector page, and
3128- * set sigreturn to be a pointer to these.
3129- */
3130- memcpy(addr + offset, sigreturn_codes, sizeof(sigreturn_codes));
3131-
3132- ptr = (unsigned long)addr + offset;
3133- flush_icache_range(ptr, ptr + sizeof(sigreturn_codes));
3134-
3135- return page;
3136-}
3137diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c
3138index 7c4fada..8581286 100644
3139--- a/arch/arm/kernel/smp.c
3140+++ b/arch/arm/kernel/smp.c
3141@@ -73,7 +73,7 @@ enum ipi_msg_type {
3142
3143 static DECLARE_COMPLETION(cpu_running);
3144
3145-static struct smp_operations smp_ops;
3146+static struct smp_operations smp_ops __read_only;
3147
3148 void __init smp_set_ops(struct smp_operations *ops)
3149 {
3150diff --git a/arch/arm/kernel/tcm.c b/arch/arm/kernel/tcm.c
3151index 7a3be1d..b00c7de 100644
3152--- a/arch/arm/kernel/tcm.c
3153+++ b/arch/arm/kernel/tcm.c
3154@@ -61,7 +61,7 @@ static struct map_desc itcm_iomap[] __initdata = {
3155 .virtual = ITCM_OFFSET,
3156 .pfn = __phys_to_pfn(ITCM_OFFSET),
3157 .length = 0,
3158- .type = MT_MEMORY_RWX_ITCM,
3159+ .type = MT_MEMORY_RX_ITCM,
3160 }
3161 };
3162
3163@@ -267,7 +267,9 @@ no_dtcm:
3164 start = &__sitcm_text;
3165 end = &__eitcm_text;
3166 ram = &__itcm_start;
3167+ pax_open_kernel();
3168 memcpy(start, ram, itcm_code_sz);
3169+ pax_close_kernel();
3170 pr_debug("CPU ITCM: copied code from %p - %p\n",
3171 start, end);
3172 itcm_present = true;
3173diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
3174index abd2fc0..895dbb6 100644
3175--- a/arch/arm/kernel/traps.c
3176+++ b/arch/arm/kernel/traps.c
3177@@ -62,7 +62,7 @@ static void dump_mem(const char *, const char *, unsigned long, unsigned long);
3178 void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long frame)
3179 {
3180 #ifdef CONFIG_KALLSYMS
3181- printk("[<%08lx>] (%ps) from [<%08lx>] (%pS)\n", where, (void *)where, from, (void *)from);
3182+ printk("[<%08lx>] (%pA) from [<%08lx>] (%pA)\n", where, (void *)where, from, (void *)from);
3183 #else
3184 printk("Function entered at [<%08lx>] from [<%08lx>]\n", where, from);
3185 #endif
3186@@ -264,6 +264,8 @@ static arch_spinlock_t die_lock = __ARCH_SPIN_LOCK_UNLOCKED;
3187 static int die_owner = -1;
3188 static unsigned int die_nest_count;
3189
3190+extern void gr_handle_kernel_exploit(void);
3191+
3192 static unsigned long oops_begin(void)
3193 {
3194 int cpu;
3195@@ -306,6 +308,9 @@ static void oops_end(unsigned long flags, struct pt_regs *regs, int signr)
3196 panic("Fatal exception in interrupt");
3197 if (panic_on_oops)
3198 panic("Fatal exception");
3199+
3200+ gr_handle_kernel_exploit();
3201+
3202 if (signr)
3203 do_exit(signr);
3204 }
3205@@ -643,7 +648,9 @@ asmlinkage int arm_syscall(int no, struct pt_regs *regs)
3206 * The user helper at 0xffff0fe0 must be used instead.
3207 * (see entry-armv.S for details)
3208 */
3209+ pax_open_kernel();
3210 *((unsigned int *)0xffff0ff0) = regs->ARM_r0;
3211+ pax_close_kernel();
3212 }
3213 return 0;
3214
3215@@ -900,7 +907,11 @@ void __init early_trap_init(void *vectors_base)
3216 kuser_init(vectors_base);
3217
3218 flush_icache_range(vectors, vectors + PAGE_SIZE * 2);
3219- modify_domain(DOMAIN_USER, DOMAIN_CLIENT);
3220+
3221+#ifndef CONFIG_PAX_MEMORY_UDEREF
3222+ modify_domain(DOMAIN_USER, DOMAIN_USERCLIENT);
3223+#endif
3224+
3225 #else /* ifndef CONFIG_CPU_V7M */
3226 /*
3227 * on V7-M there is no need to copy the vector table to a dedicated
3228diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
3229index 7bcee5c..e2f3249 100644
3230--- a/arch/arm/kernel/vmlinux.lds.S
3231+++ b/arch/arm/kernel/vmlinux.lds.S
3232@@ -8,7 +8,11 @@
3233 #include <asm/thread_info.h>
3234 #include <asm/memory.h>
3235 #include <asm/page.h>
3236-
3237+
3238+#ifdef CONFIG_PAX_KERNEXEC
3239+#include <asm/pgtable.h>
3240+#endif
3241+
3242 #define PROC_INFO \
3243 . = ALIGN(4); \
3244 VMLINUX_SYMBOL(__proc_info_begin) = .; \
3245@@ -34,7 +38,7 @@
3246 #endif
3247
3248 #if (defined(CONFIG_SMP_ON_UP) && !defined(CONFIG_DEBUG_SPINLOCK)) || \
3249- defined(CONFIG_GENERIC_BUG)
3250+ defined(CONFIG_GENERIC_BUG) || defined(CONFIG_PAX_REFCOUNT)
3251 #define ARM_EXIT_KEEP(x) x
3252 #define ARM_EXIT_DISCARD(x)
3253 #else
3254@@ -90,6 +94,11 @@ SECTIONS
3255 _text = .;
3256 HEAD_TEXT
3257 }
3258+
3259+#ifdef CONFIG_PAX_KERNEXEC
3260+ . = ALIGN(1<<SECTION_SHIFT);
3261+#endif
3262+
3263 .text : { /* Real text segment */
3264 _stext = .; /* Text and read-only data */
3265 __exception_text_start = .;
3266@@ -112,6 +121,8 @@ SECTIONS
3267 ARM_CPU_KEEP(PROC_INFO)
3268 }
3269
3270+ _etext = .; /* End of text section */
3271+
3272 RO_DATA(PAGE_SIZE)
3273
3274 . = ALIGN(4);
3275@@ -142,7 +153,9 @@ SECTIONS
3276
3277 NOTES
3278
3279- _etext = .; /* End of text and rodata section */
3280+#ifdef CONFIG_PAX_KERNEXEC
3281+ . = ALIGN(1<<SECTION_SHIFT);
3282+#endif
3283
3284 #ifndef CONFIG_XIP_KERNEL
3285 . = ALIGN(PAGE_SIZE);
3286@@ -220,6 +233,11 @@ SECTIONS
3287 . = PAGE_OFFSET + TEXT_OFFSET;
3288 #else
3289 __init_end = .;
3290+
3291+#ifdef CONFIG_PAX_KERNEXEC
3292+ . = ALIGN(1<<SECTION_SHIFT);
3293+#endif
3294+
3295 . = ALIGN(THREAD_SIZE);
3296 __data_loc = .;
3297 #endif
3298diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
3299index f0e50a0..8d5d36c 100644
3300--- a/arch/arm/kvm/arm.c
3301+++ b/arch/arm/kvm/arm.c
3302@@ -57,7 +57,7 @@ static unsigned long hyp_default_vectors;
3303 static DEFINE_PER_CPU(struct kvm_vcpu *, kvm_arm_running_vcpu);
3304
3305 /* The VMID used in the VTTBR */
3306-static atomic64_t kvm_vmid_gen = ATOMIC64_INIT(1);
3307+static atomic64_unchecked_t kvm_vmid_gen = ATOMIC64_INIT(1);
3308 static u8 kvm_next_vmid;
3309 static DEFINE_SPINLOCK(kvm_vmid_lock);
3310
3311@@ -408,7 +408,7 @@ void force_vm_exit(const cpumask_t *mask)
3312 */
3313 static bool need_new_vmid_gen(struct kvm *kvm)
3314 {
3315- return unlikely(kvm->arch.vmid_gen != atomic64_read(&kvm_vmid_gen));
3316+ return unlikely(kvm->arch.vmid_gen != atomic64_read_unchecked(&kvm_vmid_gen));
3317 }
3318
3319 /**
3320@@ -441,7 +441,7 @@ static void update_vttbr(struct kvm *kvm)
3321
3322 /* First user of a new VMID generation? */
3323 if (unlikely(kvm_next_vmid == 0)) {
3324- atomic64_inc(&kvm_vmid_gen);
3325+ atomic64_inc_unchecked(&kvm_vmid_gen);
3326 kvm_next_vmid = 1;
3327
3328 /*
3329@@ -458,7 +458,7 @@ static void update_vttbr(struct kvm *kvm)
3330 kvm_call_hyp(__kvm_flush_vm_context);
3331 }
3332
3333- kvm->arch.vmid_gen = atomic64_read(&kvm_vmid_gen);
3334+ kvm->arch.vmid_gen = atomic64_read_unchecked(&kvm_vmid_gen);
3335 kvm->arch.vmid = kvm_next_vmid;
3336 kvm_next_vmid++;
3337
3338diff --git a/arch/arm/lib/clear_user.S b/arch/arm/lib/clear_user.S
3339index 14a0d98..7771a7d 100644
3340--- a/arch/arm/lib/clear_user.S
3341+++ b/arch/arm/lib/clear_user.S
3342@@ -12,14 +12,14 @@
3343
3344 .text
3345
3346-/* Prototype: int __clear_user(void *addr, size_t sz)
3347+/* Prototype: int ___clear_user(void *addr, size_t sz)
3348 * Purpose : clear some user memory
3349 * Params : addr - user memory address to clear
3350 * : sz - number of bytes to clear
3351 * Returns : number of bytes NOT cleared
3352 */
3353 ENTRY(__clear_user_std)
3354-WEAK(__clear_user)
3355+WEAK(___clear_user)
3356 stmfd sp!, {r1, lr}
3357 mov r2, #0
3358 cmp r1, #4
3359@@ -44,7 +44,7 @@ WEAK(__clear_user)
3360 USER( strnebt r2, [r0])
3361 mov r0, #0
3362 ldmfd sp!, {r1, pc}
3363-ENDPROC(__clear_user)
3364+ENDPROC(___clear_user)
3365 ENDPROC(__clear_user_std)
3366
3367 .pushsection .fixup,"ax"
3368diff --git a/arch/arm/lib/copy_from_user.S b/arch/arm/lib/copy_from_user.S
3369index 66a477a..bee61d3 100644
3370--- a/arch/arm/lib/copy_from_user.S
3371+++ b/arch/arm/lib/copy_from_user.S
3372@@ -16,7 +16,7 @@
3373 /*
3374 * Prototype:
3375 *
3376- * size_t __copy_from_user(void *to, const void *from, size_t n)
3377+ * size_t ___copy_from_user(void *to, const void *from, size_t n)
3378 *
3379 * Purpose:
3380 *
3381@@ -84,11 +84,11 @@
3382
3383 .text
3384
3385-ENTRY(__copy_from_user)
3386+ENTRY(___copy_from_user)
3387
3388 #include "copy_template.S"
3389
3390-ENDPROC(__copy_from_user)
3391+ENDPROC(___copy_from_user)
3392
3393 .pushsection .fixup,"ax"
3394 .align 0
3395diff --git a/arch/arm/lib/copy_page.S b/arch/arm/lib/copy_page.S
3396index 6ee2f67..d1cce76 100644
3397--- a/arch/arm/lib/copy_page.S
3398+++ b/arch/arm/lib/copy_page.S
3399@@ -10,6 +10,7 @@
3400 * ASM optimised string functions
3401 */
3402 #include <linux/linkage.h>
3403+#include <linux/const.h>
3404 #include <asm/assembler.h>
3405 #include <asm/asm-offsets.h>
3406 #include <asm/cache.h>
3407diff --git a/arch/arm/lib/copy_to_user.S b/arch/arm/lib/copy_to_user.S
3408index d066df6..df28194 100644
3409--- a/arch/arm/lib/copy_to_user.S
3410+++ b/arch/arm/lib/copy_to_user.S
3411@@ -16,7 +16,7 @@
3412 /*
3413 * Prototype:
3414 *
3415- * size_t __copy_to_user(void *to, const void *from, size_t n)
3416+ * size_t ___copy_to_user(void *to, const void *from, size_t n)
3417 *
3418 * Purpose:
3419 *
3420@@ -88,11 +88,11 @@
3421 .text
3422
3423 ENTRY(__copy_to_user_std)
3424-WEAK(__copy_to_user)
3425+WEAK(___copy_to_user)
3426
3427 #include "copy_template.S"
3428
3429-ENDPROC(__copy_to_user)
3430+ENDPROC(___copy_to_user)
3431 ENDPROC(__copy_to_user_std)
3432
3433 .pushsection .fixup,"ax"
3434diff --git a/arch/arm/lib/csumpartialcopyuser.S b/arch/arm/lib/csumpartialcopyuser.S
3435index 7d08b43..f7ca7ea 100644
3436--- a/arch/arm/lib/csumpartialcopyuser.S
3437+++ b/arch/arm/lib/csumpartialcopyuser.S
3438@@ -57,8 +57,8 @@
3439 * Returns : r0 = checksum, [[sp, #0], #0] = 0 or -EFAULT
3440 */
3441
3442-#define FN_ENTRY ENTRY(csum_partial_copy_from_user)
3443-#define FN_EXIT ENDPROC(csum_partial_copy_from_user)
3444+#define FN_ENTRY ENTRY(__csum_partial_copy_from_user)
3445+#define FN_EXIT ENDPROC(__csum_partial_copy_from_user)
3446
3447 #include "csumpartialcopygeneric.S"
3448
3449diff --git a/arch/arm/lib/delay.c b/arch/arm/lib/delay.c
3450index 5306de3..aed6d03 100644
3451--- a/arch/arm/lib/delay.c
3452+++ b/arch/arm/lib/delay.c
3453@@ -28,7 +28,7 @@
3454 /*
3455 * Default to the loop-based delay implementation.
3456 */
3457-struct arm_delay_ops arm_delay_ops = {
3458+struct arm_delay_ops arm_delay_ops __read_only = {
3459 .delay = __loop_delay,
3460 .const_udelay = __loop_const_udelay,
3461 .udelay = __loop_udelay,
3462diff --git a/arch/arm/lib/uaccess_with_memcpy.c b/arch/arm/lib/uaccess_with_memcpy.c
3463index 3e58d71..029817c 100644
3464--- a/arch/arm/lib/uaccess_with_memcpy.c
3465+++ b/arch/arm/lib/uaccess_with_memcpy.c
3466@@ -136,7 +136,7 @@ out:
3467 }
3468
3469 unsigned long
3470-__copy_to_user(void __user *to, const void *from, unsigned long n)
3471+___copy_to_user(void __user *to, const void *from, unsigned long n)
3472 {
3473 /*
3474 * This test is stubbed out of the main function above to keep
3475@@ -190,7 +190,7 @@ out:
3476 return n;
3477 }
3478
3479-unsigned long __clear_user(void __user *addr, unsigned long n)
3480+unsigned long ___clear_user(void __user *addr, unsigned long n)
3481 {
3482 /* See rational for this in __copy_to_user() above. */
3483 if (n < 64)
3484diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
3485index f7a07a5..258e1f7 100644
3486--- a/arch/arm/mach-at91/setup.c
3487+++ b/arch/arm/mach-at91/setup.c
3488@@ -81,7 +81,7 @@ void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
3489
3490 desc->pfn = __phys_to_pfn(base);
3491 desc->length = length;
3492- desc->type = MT_MEMORY_RWX_NONCACHED;
3493+ desc->type = MT_MEMORY_RW_NONCACHED;
3494
3495 pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n",
3496 base, length, desc->virtual);
3497diff --git a/arch/arm/mach-kirkwood/common.c b/arch/arm/mach-kirkwood/common.c
3498index 255f33a..507b157 100644
3499--- a/arch/arm/mach-kirkwood/common.c
3500+++ b/arch/arm/mach-kirkwood/common.c
3501@@ -157,7 +157,16 @@ static void clk_gate_fn_disable(struct clk_hw *hw)
3502 clk_gate_ops.disable(hw);
3503 }
3504
3505-static struct clk_ops clk_gate_fn_ops;
3506+static int clk_gate_fn_is_enabled(struct clk_hw *hw)
3507+{
3508+ return clk_gate_ops.is_enabled(hw);
3509+}
3510+
3511+static struct clk_ops clk_gate_fn_ops = {
3512+ .enable = clk_gate_fn_enable,
3513+ .disable = clk_gate_fn_disable,
3514+ .is_enabled = clk_gate_fn_is_enabled,
3515+};
3516
3517 static struct clk __init *clk_register_gate_fn(struct device *dev,
3518 const char *name,
3519@@ -191,14 +200,6 @@ static struct clk __init *clk_register_gate_fn(struct device *dev,
3520 gate_fn->fn_en = fn_en;
3521 gate_fn->fn_dis = fn_dis;
3522
3523- /* ops is the gate ops, but with our enable/disable functions */
3524- if (clk_gate_fn_ops.enable != clk_gate_fn_enable ||
3525- clk_gate_fn_ops.disable != clk_gate_fn_disable) {
3526- clk_gate_fn_ops = clk_gate_ops;
3527- clk_gate_fn_ops.enable = clk_gate_fn_enable;
3528- clk_gate_fn_ops.disable = clk_gate_fn_disable;
3529- }
3530-
3531 clk = clk_register(dev, &gate_fn->gate.hw);
3532
3533 if (IS_ERR(clk))
3534diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c
3535index aead77a..a2253fa 100644
3536--- a/arch/arm/mach-omap2/board-n8x0.c
3537+++ b/arch/arm/mach-omap2/board-n8x0.c
3538@@ -568,7 +568,7 @@ static int n8x0_menelaus_late_init(struct device *dev)
3539 }
3540 #endif
3541
3542-static struct menelaus_platform_data n8x0_menelaus_platform_data __initdata = {
3543+static struct menelaus_platform_data n8x0_menelaus_platform_data __initconst = {
3544 .late_init = n8x0_menelaus_late_init,
3545 };
3546
3547diff --git a/arch/arm/mach-omap2/gpmc.c b/arch/arm/mach-omap2/gpmc.c
3548index 9fe8c94..c014a4d 100644
3549--- a/arch/arm/mach-omap2/gpmc.c
3550+++ b/arch/arm/mach-omap2/gpmc.c
3551@@ -148,7 +148,6 @@ struct omap3_gpmc_regs {
3552 };
3553
3554 static struct gpmc_client_irq gpmc_client_irq[GPMC_NR_IRQ];
3555-static struct irq_chip gpmc_irq_chip;
3556 static int gpmc_irq_start;
3557
3558 static struct resource gpmc_mem_root;
3559@@ -727,6 +726,18 @@ static void gpmc_irq_noop(struct irq_data *data) { }
3560
3561 static unsigned int gpmc_irq_noop_ret(struct irq_data *data) { return 0; }
3562
3563+static struct irq_chip gpmc_irq_chip = {
3564+ .name = "gpmc",
3565+ .irq_startup = gpmc_irq_noop_ret,
3566+ .irq_enable = gpmc_irq_enable,
3567+ .irq_disable = gpmc_irq_disable,
3568+ .irq_shutdown = gpmc_irq_noop,
3569+ .irq_ack = gpmc_irq_noop,
3570+ .irq_mask = gpmc_irq_noop,
3571+ .irq_unmask = gpmc_irq_noop,
3572+
3573+};
3574+
3575 static int gpmc_setup_irq(void)
3576 {
3577 int i;
3578@@ -741,15 +752,6 @@ static int gpmc_setup_irq(void)
3579 return gpmc_irq_start;
3580 }
3581
3582- gpmc_irq_chip.name = "gpmc";
3583- gpmc_irq_chip.irq_startup = gpmc_irq_noop_ret;
3584- gpmc_irq_chip.irq_enable = gpmc_irq_enable;
3585- gpmc_irq_chip.irq_disable = gpmc_irq_disable;
3586- gpmc_irq_chip.irq_shutdown = gpmc_irq_noop;
3587- gpmc_irq_chip.irq_ack = gpmc_irq_noop;
3588- gpmc_irq_chip.irq_mask = gpmc_irq_noop;
3589- gpmc_irq_chip.irq_unmask = gpmc_irq_noop;
3590-
3591 gpmc_client_irq[0].bitmask = GPMC_IRQ_FIFOEVENTENABLE;
3592 gpmc_client_irq[1].bitmask = GPMC_IRQ_COUNT_EVENT;
3593
3594diff --git a/arch/arm/mach-omap2/omap-mpuss-lowpower.c b/arch/arm/mach-omap2/omap-mpuss-lowpower.c
3595index 667915d..2ee1219 100644
3596--- a/arch/arm/mach-omap2/omap-mpuss-lowpower.c
3597+++ b/arch/arm/mach-omap2/omap-mpuss-lowpower.c
3598@@ -84,7 +84,7 @@ struct cpu_pm_ops {
3599 int (*finish_suspend)(unsigned long cpu_state);
3600 void (*resume)(void);
3601 void (*scu_prepare)(unsigned int cpu_id, unsigned int cpu_state);
3602-};
3603+} __no_const;
3604
3605 static DEFINE_PER_CPU(struct omap4_cpu_pm_info, omap4_pm_info);
3606 static struct powerdomain *mpuss_pd;
3607@@ -102,7 +102,7 @@ static void dummy_cpu_resume(void)
3608 static void dummy_scu_prepare(unsigned int cpu_id, unsigned int cpu_state)
3609 {}
3610
3611-struct cpu_pm_ops omap_pm_ops = {
3612+static struct cpu_pm_ops omap_pm_ops __read_only = {
3613 .finish_suspend = default_finish_suspend,
3614 .resume = dummy_cpu_resume,
3615 .scu_prepare = dummy_scu_prepare,
3616diff --git a/arch/arm/mach-omap2/omap-wakeupgen.c b/arch/arm/mach-omap2/omap-wakeupgen.c
3617index 693fe48..c15ea73 100644
3618--- a/arch/arm/mach-omap2/omap-wakeupgen.c
3619+++ b/arch/arm/mach-omap2/omap-wakeupgen.c
3620@@ -343,7 +343,7 @@ static int irq_cpu_hotplug_notify(struct notifier_block *self,
3621 return NOTIFY_OK;
3622 }
3623
3624-static struct notifier_block __refdata irq_hotplug_notifier = {
3625+static struct notifier_block irq_hotplug_notifier = {
3626 .notifier_call = irq_cpu_hotplug_notify,
3627 };
3628
3629diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c
3630index 01ef59d..32ae28a8 100644
3631--- a/arch/arm/mach-omap2/omap_device.c
3632+++ b/arch/arm/mach-omap2/omap_device.c
3633@@ -510,7 +510,7 @@ void omap_device_delete(struct omap_device *od)
3634 struct platform_device __init *omap_device_build(const char *pdev_name,
3635 int pdev_id,
3636 struct omap_hwmod *oh,
3637- void *pdata, int pdata_len)
3638+ const void *pdata, int pdata_len)
3639 {
3640 struct omap_hwmod *ohs[] = { oh };
3641
3642@@ -538,7 +538,7 @@ struct platform_device __init *omap_device_build(const char *pdev_name,
3643 struct platform_device __init *omap_device_build_ss(const char *pdev_name,
3644 int pdev_id,
3645 struct omap_hwmod **ohs,
3646- int oh_cnt, void *pdata,
3647+ int oh_cnt, const void *pdata,
3648 int pdata_len)
3649 {
3650 int ret = -ENOMEM;
3651diff --git a/arch/arm/mach-omap2/omap_device.h b/arch/arm/mach-omap2/omap_device.h
3652index 78c02b3..c94109a 100644
3653--- a/arch/arm/mach-omap2/omap_device.h
3654+++ b/arch/arm/mach-omap2/omap_device.h
3655@@ -72,12 +72,12 @@ int omap_device_idle(struct platform_device *pdev);
3656 /* Core code interface */
3657
3658 struct platform_device *omap_device_build(const char *pdev_name, int pdev_id,
3659- struct omap_hwmod *oh, void *pdata,
3660+ struct omap_hwmod *oh, const void *pdata,
3661 int pdata_len);
3662
3663 struct platform_device *omap_device_build_ss(const char *pdev_name, int pdev_id,
3664 struct omap_hwmod **oh, int oh_cnt,
3665- void *pdata, int pdata_len);
3666+ const void *pdata, int pdata_len);
3667
3668 struct omap_device *omap_device_alloc(struct platform_device *pdev,
3669 struct omap_hwmod **ohs, int oh_cnt);
3670diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
3671index 66c60fe..c78950d 100644
3672--- a/arch/arm/mach-omap2/omap_hwmod.c
3673+++ b/arch/arm/mach-omap2/omap_hwmod.c
3674@@ -194,10 +194,10 @@ struct omap_hwmod_soc_ops {
3675 int (*init_clkdm)(struct omap_hwmod *oh);
3676 void (*update_context_lost)(struct omap_hwmod *oh);
3677 int (*get_context_lost)(struct omap_hwmod *oh);
3678-};
3679+} __no_const;
3680
3681 /* soc_ops: adapts the omap_hwmod code to the currently-booted SoC */
3682-static struct omap_hwmod_soc_ops soc_ops;
3683+static struct omap_hwmod_soc_ops soc_ops __read_only;
3684
3685 /* omap_hwmod_list contains all registered struct omap_hwmods */
3686 static LIST_HEAD(omap_hwmod_list);
3687diff --git a/arch/arm/mach-omap2/powerdomains43xx_data.c b/arch/arm/mach-omap2/powerdomains43xx_data.c
3688index 95fee54..cfa9cf1 100644
3689--- a/arch/arm/mach-omap2/powerdomains43xx_data.c
3690+++ b/arch/arm/mach-omap2/powerdomains43xx_data.c
3691@@ -10,6 +10,7 @@
3692
3693 #include <linux/kernel.h>
3694 #include <linux/init.h>
3695+#include <asm/pgtable.h>
3696
3697 #include "powerdomain.h"
3698
3699@@ -129,7 +130,9 @@ static int am43xx_check_vcvp(void)
3700
3701 void __init am43xx_powerdomains_init(void)
3702 {
3703- omap4_pwrdm_operations.pwrdm_has_voltdm = am43xx_check_vcvp;
3704+ pax_open_kernel();
3705+ *(void **)&omap4_pwrdm_operations.pwrdm_has_voltdm = am43xx_check_vcvp;
3706+ pax_close_kernel();
3707 pwrdm_register_platform_funcs(&omap4_pwrdm_operations);
3708 pwrdm_register_pwrdms(powerdomains_am43xx);
3709 pwrdm_complete_init();
3710diff --git a/arch/arm/mach-omap2/wd_timer.c b/arch/arm/mach-omap2/wd_timer.c
3711index d15c7bb..b2d1f0c 100644
3712--- a/arch/arm/mach-omap2/wd_timer.c
3713+++ b/arch/arm/mach-omap2/wd_timer.c
3714@@ -110,7 +110,9 @@ static int __init omap_init_wdt(void)
3715 struct omap_hwmod *oh;
3716 char *oh_name = "wd_timer2";
3717 char *dev_name = "omap_wdt";
3718- struct omap_wd_timer_platform_data pdata;
3719+ static struct omap_wd_timer_platform_data pdata = {
3720+ .read_reset_sources = prm_read_reset_sources
3721+ };
3722
3723 if (!cpu_class_is_omap2() || of_have_populated_dt())
3724 return 0;
3725@@ -121,8 +123,6 @@ static int __init omap_init_wdt(void)
3726 return -EINVAL;
3727 }
3728
3729- pdata.read_reset_sources = prm_read_reset_sources;
3730-
3731 pdev = omap_device_build(dev_name, id, oh, &pdata,
3732 sizeof(struct omap_wd_timer_platform_data));
3733 WARN(IS_ERR(pdev), "Can't build omap_device for %s:%s.\n",
3734diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c
3735index b82dcae..44ee5b6 100644
3736--- a/arch/arm/mach-tegra/cpuidle-tegra20.c
3737+++ b/arch/arm/mach-tegra/cpuidle-tegra20.c
3738@@ -180,7 +180,7 @@ static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev,
3739 bool entered_lp2 = false;
3740
3741 if (tegra_pending_sgi())
3742- ACCESS_ONCE(abort_flag) = true;
3743+ ACCESS_ONCE_RW(abort_flag) = true;
3744
3745 cpuidle_coupled_parallel_barrier(dev, &abort_barrier);
3746
3747diff --git a/arch/arm/mach-ux500/setup.h b/arch/arm/mach-ux500/setup.h
3748index 2dea8b5..6499da2 100644
3749--- a/arch/arm/mach-ux500/setup.h
3750+++ b/arch/arm/mach-ux500/setup.h
3751@@ -33,13 +33,6 @@ extern void ux500_timer_init(void);
3752 .type = MT_DEVICE, \
3753 }
3754
3755-#define __MEM_DEV_DESC(x, sz) { \
3756- .virtual = IO_ADDRESS(x), \
3757- .pfn = __phys_to_pfn(x), \
3758- .length = sz, \
3759- .type = MT_MEMORY_RWX, \
3760-}
3761-
3762 extern struct smp_operations ux500_smp_ops;
3763 extern void ux500_cpu_die(unsigned int cpu);
3764
3765diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
3766index 5bf7c3c..571e67e 100644
3767--- a/arch/arm/mm/Kconfig
3768+++ b/arch/arm/mm/Kconfig
3769@@ -446,6 +446,7 @@ config CPU_32v5
3770
3771 config CPU_32v6
3772 bool
3773+ select CPU_USE_DOMAINS if CPU_V6 && MMU && !PAX_KERNEXEC && !PAX_MEMORY_UDEREF
3774 select TLS_REG_EMUL if !CPU_32v6K && !MMU
3775
3776 config CPU_32v6K
3777@@ -600,6 +601,7 @@ config CPU_CP15_MPU
3778
3779 config CPU_USE_DOMAINS
3780 bool
3781+ depends on !ARM_LPAE && !PAX_KERNEXEC && !PAX_MEMORY_UDEREF
3782 help
3783 This option enables or disables the use of domain switching
3784 via the set_fs() function.
3785@@ -799,6 +801,7 @@ config NEED_KUSER_HELPERS
3786 config KUSER_HELPERS
3787 bool "Enable kuser helpers in vector page" if !NEED_KUSER_HELPERS
3788 default y
3789+ depends on !(CPU_V6 || CPU_V6K || CPU_V7) || GRKERNSEC_OLD_ARM_USERLAND
3790 help
3791 Warning: disabling this option may break user programs.
3792
3793@@ -811,7 +814,7 @@ config KUSER_HELPERS
3794 See Documentation/arm/kernel_user_helpers.txt for details.
3795
3796 However, the fixed address nature of these helpers can be used
3797- by ROP (return orientated programming) authors when creating
3798+ by ROP (Return Oriented Programming) authors when creating
3799 exploits.
3800
3801 If all of the binaries and libraries which run on your platform
3802diff --git a/arch/arm/mm/alignment.c b/arch/arm/mm/alignment.c
3803index 9240364..a2b8cf3 100644
3804--- a/arch/arm/mm/alignment.c
3805+++ b/arch/arm/mm/alignment.c
3806@@ -212,10 +212,12 @@ union offset_union {
3807 #define __get16_unaligned_check(ins,val,addr) \
3808 do { \
3809 unsigned int err = 0, v, a = addr; \
3810+ pax_open_userland(); \
3811 __get8_unaligned_check(ins,v,a,err); \
3812 val = v << ((BE) ? 8 : 0); \
3813 __get8_unaligned_check(ins,v,a,err); \
3814 val |= v << ((BE) ? 0 : 8); \
3815+ pax_close_userland(); \
3816 if (err) \
3817 goto fault; \
3818 } while (0)
3819@@ -229,6 +231,7 @@ union offset_union {
3820 #define __get32_unaligned_check(ins,val,addr) \
3821 do { \
3822 unsigned int err = 0, v, a = addr; \
3823+ pax_open_userland(); \
3824 __get8_unaligned_check(ins,v,a,err); \
3825 val = v << ((BE) ? 24 : 0); \
3826 __get8_unaligned_check(ins,v,a,err); \
3827@@ -237,6 +240,7 @@ union offset_union {
3828 val |= v << ((BE) ? 8 : 16); \
3829 __get8_unaligned_check(ins,v,a,err); \
3830 val |= v << ((BE) ? 0 : 24); \
3831+ pax_close_userland(); \
3832 if (err) \
3833 goto fault; \
3834 } while (0)
3835@@ -250,6 +254,7 @@ union offset_union {
3836 #define __put16_unaligned_check(ins,val,addr) \
3837 do { \
3838 unsigned int err = 0, v = val, a = addr; \
3839+ pax_open_userland(); \
3840 __asm__( FIRST_BYTE_16 \
3841 ARM( "1: "ins" %1, [%2], #1\n" ) \
3842 THUMB( "1: "ins" %1, [%2]\n" ) \
3843@@ -269,6 +274,7 @@ union offset_union {
3844 " .popsection\n" \
3845 : "=r" (err), "=&r" (v), "=&r" (a) \
3846 : "0" (err), "1" (v), "2" (a)); \
3847+ pax_close_userland(); \
3848 if (err) \
3849 goto fault; \
3850 } while (0)
3851@@ -282,6 +288,7 @@ union offset_union {
3852 #define __put32_unaligned_check(ins,val,addr) \
3853 do { \
3854 unsigned int err = 0, v = val, a = addr; \
3855+ pax_open_userland(); \
3856 __asm__( FIRST_BYTE_32 \
3857 ARM( "1: "ins" %1, [%2], #1\n" ) \
3858 THUMB( "1: "ins" %1, [%2]\n" ) \
3859@@ -311,6 +318,7 @@ union offset_union {
3860 " .popsection\n" \
3861 : "=r" (err), "=&r" (v), "=&r" (a) \
3862 : "0" (err), "1" (v), "2" (a)); \
3863+ pax_close_userland(); \
3864 if (err) \
3865 goto fault; \
3866 } while (0)
3867diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
3868index 7abde2c..9df495f 100644
3869--- a/arch/arm/mm/cache-l2x0.c
3870+++ b/arch/arm/mm/cache-l2x0.c
3871@@ -46,7 +46,7 @@ struct l2x0_of_data {
3872 void (*setup)(const struct device_node *, u32 *, u32 *);
3873 void (*save)(void);
3874 struct outer_cache_fns outer_cache;
3875-};
3876+} __do_const;
3877
3878 static bool of_init = false;
3879
3880diff --git a/arch/arm/mm/context.c b/arch/arm/mm/context.c
3881index 6eb97b3..ac509f6 100644
3882--- a/arch/arm/mm/context.c
3883+++ b/arch/arm/mm/context.c
3884@@ -43,7 +43,7 @@
3885 #define NUM_USER_ASIDS ASID_FIRST_VERSION
3886
3887 static DEFINE_RAW_SPINLOCK(cpu_asid_lock);
3888-static atomic64_t asid_generation = ATOMIC64_INIT(ASID_FIRST_VERSION);
3889+static atomic64_unchecked_t asid_generation = ATOMIC64_INIT(ASID_FIRST_VERSION);
3890 static DECLARE_BITMAP(asid_map, NUM_USER_ASIDS);
3891
3892 static DEFINE_PER_CPU(atomic64_t, active_asids);
3893@@ -182,7 +182,7 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu)
3894 {
3895 static u32 cur_idx = 1;
3896 u64 asid = atomic64_read(&mm->context.id);
3897- u64 generation = atomic64_read(&asid_generation);
3898+ u64 generation = atomic64_read_unchecked(&asid_generation);
3899
3900 if (asid != 0 && is_reserved_asid(asid)) {
3901 /*
3902@@ -203,7 +203,7 @@ static u64 new_context(struct mm_struct *mm, unsigned int cpu)
3903 */
3904 asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, cur_idx);
3905 if (asid == NUM_USER_ASIDS) {
3906- generation = atomic64_add_return(ASID_FIRST_VERSION,
3907+ generation = atomic64_add_return_unchecked(ASID_FIRST_VERSION,
3908 &asid_generation);
3909 flush_context(cpu);
3910 asid = find_next_zero_bit(asid_map, NUM_USER_ASIDS, 1);
3911@@ -234,14 +234,14 @@ void check_and_switch_context(struct mm_struct *mm, struct task_struct *tsk)
3912 cpu_set_reserved_ttbr0();
3913
3914 asid = atomic64_read(&mm->context.id);
3915- if (!((asid ^ atomic64_read(&asid_generation)) >> ASID_BITS)
3916+ if (!((asid ^ atomic64_read_unchecked(&asid_generation)) >> ASID_BITS)
3917 && atomic64_xchg(&per_cpu(active_asids, cpu), asid))
3918 goto switch_mm_fastpath;
3919
3920 raw_spin_lock_irqsave(&cpu_asid_lock, flags);
3921 /* Check that our ASID belongs to the current generation. */
3922 asid = atomic64_read(&mm->context.id);
3923- if ((asid ^ atomic64_read(&asid_generation)) >> ASID_BITS) {
3924+ if ((asid ^ atomic64_read_unchecked(&asid_generation)) >> ASID_BITS) {
3925 asid = new_context(mm, cpu);
3926 atomic64_set(&mm->context.id, asid);
3927 }
3928diff --git a/arch/arm/mm/fault.c b/arch/arm/mm/fault.c
3929index eb8830a..5360ce7 100644
3930--- a/arch/arm/mm/fault.c
3931+++ b/arch/arm/mm/fault.c
3932@@ -25,6 +25,7 @@
3933 #include <asm/system_misc.h>
3934 #include <asm/system_info.h>
3935 #include <asm/tlbflush.h>
3936+#include <asm/sections.h>
3937
3938 #include "fault.h"
3939
3940@@ -138,6 +139,31 @@ __do_kernel_fault(struct mm_struct *mm, unsigned long addr, unsigned int fsr,
3941 if (fixup_exception(regs))
3942 return;
3943
3944+#ifdef CONFIG_PAX_MEMORY_UDEREF
3945+ if (addr < TASK_SIZE) {
3946+ if (current->signal->curr_ip)
3947+ printk(KERN_ERR "PAX: From %pI4: %s:%d, uid/euid: %u/%u, attempted to access userland memory at %08lx\n", &current->signal->curr_ip, current->comm, task_pid_nr(current),
3948+ from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()), addr);
3949+ else
3950+ printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to access userland memory at %08lx\n", current->comm, task_pid_nr(current),
3951+ from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()), addr);
3952+ }
3953+#endif
3954+
3955+#ifdef CONFIG_PAX_KERNEXEC
3956+ if ((fsr & FSR_WRITE) &&
3957+ (((unsigned long)_stext <= addr && addr < init_mm.end_code) ||
3958+ (MODULES_VADDR <= addr && addr < MODULES_END)))
3959+ {
3960+ if (current->signal->curr_ip)
3961+ printk(KERN_ERR "PAX: From %pI4: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n", &current->signal->curr_ip, current->comm, task_pid_nr(current),
3962+ from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()));
3963+ else
3964+ printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n", current->comm, task_pid_nr(current),
3965+ from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()));
3966+ }
3967+#endif
3968+
3969 /*
3970 * No handler, we'll have to terminate things with extreme prejudice.
3971 */
3972@@ -174,6 +200,13 @@ __do_user_fault(struct task_struct *tsk, unsigned long addr,
3973 }
3974 #endif
3975
3976+#ifdef CONFIG_PAX_PAGEEXEC
3977+ if (fsr & FSR_LNX_PF) {
3978+ pax_report_fault(regs, (void *)regs->ARM_pc, (void *)regs->ARM_sp);
3979+ do_group_exit(SIGKILL);
3980+ }
3981+#endif
3982+
3983 tsk->thread.address = addr;
3984 tsk->thread.error_code = fsr;
3985 tsk->thread.trap_no = 14;
3986@@ -401,6 +434,33 @@ do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
3987 }
3988 #endif /* CONFIG_MMU */
3989
3990+#ifdef CONFIG_PAX_PAGEEXEC
3991+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
3992+{
3993+ long i;
3994+
3995+ printk(KERN_ERR "PAX: bytes at PC: ");
3996+ for (i = 0; i < 20; i++) {
3997+ unsigned char c;
3998+ if (get_user(c, (__force unsigned char __user *)pc+i))
3999+ printk(KERN_CONT "?? ");
4000+ else
4001+ printk(KERN_CONT "%02x ", c);
4002+ }
4003+ printk("\n");
4004+
4005+ printk(KERN_ERR "PAX: bytes at SP-4: ");
4006+ for (i = -1; i < 20; i++) {
4007+ unsigned long c;
4008+ if (get_user(c, (__force unsigned long __user *)sp+i))
4009+ printk(KERN_CONT "???????? ");
4010+ else
4011+ printk(KERN_CONT "%08lx ", c);
4012+ }
4013+ printk("\n");
4014+}
4015+#endif
4016+
4017 /*
4018 * First Level Translation Fault Handler
4019 *
4020@@ -548,9 +608,22 @@ do_DataAbort(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
4021 const struct fsr_info *inf = fsr_info + fsr_fs(fsr);
4022 struct siginfo info;
4023
4024+#ifdef CONFIG_PAX_MEMORY_UDEREF
4025+ if (addr < TASK_SIZE && is_domain_fault(fsr)) {
4026+ if (current->signal->curr_ip)
4027+ printk(KERN_ERR "PAX: From %pI4: %s:%d, uid/euid: %u/%u, attempted to access userland memory at %08lx\n", &current->signal->curr_ip, current->comm, task_pid_nr(current),
4028+ from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()), addr);
4029+ else
4030+ printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to access userland memory at %08lx\n", current->comm, task_pid_nr(current),
4031+ from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()), addr);
4032+ goto die;
4033+ }
4034+#endif
4035+
4036 if (!inf->fn(addr, fsr & ~FSR_LNX_PF, regs))
4037 return;
4038
4039+die:
4040 printk(KERN_ALERT "Unhandled fault: %s (0x%03x) at 0x%08lx\n",
4041 inf->name, fsr, addr);
4042
4043@@ -574,15 +647,98 @@ hook_ifault_code(int nr, int (*fn)(unsigned long, unsigned int, struct pt_regs *
4044 ifsr_info[nr].name = name;
4045 }
4046
4047+asmlinkage int sys_sigreturn(struct pt_regs *regs);
4048+asmlinkage int sys_rt_sigreturn(struct pt_regs *regs);
4049+
4050 asmlinkage void __exception
4051 do_PrefetchAbort(unsigned long addr, unsigned int ifsr, struct pt_regs *regs)
4052 {
4053 const struct fsr_info *inf = ifsr_info + fsr_fs(ifsr);
4054 struct siginfo info;
4055+ unsigned long pc = instruction_pointer(regs);
4056+
4057+ if (user_mode(regs)) {
4058+ unsigned long sigpage = current->mm->context.sigpage;
4059+
4060+ if (sigpage <= pc && pc < sigpage + 7*4) {
4061+ if (pc < sigpage + 3*4)
4062+ sys_sigreturn(regs);
4063+ else
4064+ sys_rt_sigreturn(regs);
4065+ return;
4066+ }
4067+ if (pc == 0xffff0f60UL) {
4068+ /*
4069+ * PaX: __kuser_cmpxchg64 emulation
4070+ */
4071+ // TODO
4072+ //regs->ARM_pc = regs->ARM_lr;
4073+ //return;
4074+ }
4075+ if (pc == 0xffff0fa0UL) {
4076+ /*
4077+ * PaX: __kuser_memory_barrier emulation
4078+ */
4079+ // dmb(); implied by the exception
4080+ regs->ARM_pc = regs->ARM_lr;
4081+ return;
4082+ }
4083+ if (pc == 0xffff0fc0UL) {
4084+ /*
4085+ * PaX: __kuser_cmpxchg emulation
4086+ */
4087+ // TODO
4088+ //long new;
4089+ //int op;
4090+
4091+ //op = FUTEX_OP_SET << 28;
4092+ //new = futex_atomic_op_inuser(op, regs->ARM_r2);
4093+ //regs->ARM_r0 = old != new;
4094+ //regs->ARM_pc = regs->ARM_lr;
4095+ //return;
4096+ }
4097+ if (pc == 0xffff0fe0UL) {
4098+ /*
4099+ * PaX: __kuser_get_tls emulation
4100+ */
4101+ regs->ARM_r0 = current_thread_info()->tp_value[0];
4102+ regs->ARM_pc = regs->ARM_lr;
4103+ return;
4104+ }
4105+ }
4106+
4107+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
4108+ else if (is_domain_fault(ifsr) || is_xn_fault(ifsr)) {
4109+ if (current->signal->curr_ip)
4110+ printk(KERN_ERR "PAX: From %pI4: %s:%d, uid/euid: %u/%u, attempted to execute %s memory at %08lx\n", &current->signal->curr_ip, current->comm, task_pid_nr(current),
4111+ from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()),
4112+ pc >= TASK_SIZE ? "non-executable kernel" : "userland", pc);
4113+ else
4114+ printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to execute %s memory at %08lx\n", current->comm, task_pid_nr(current),
4115+ from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()),
4116+ pc >= TASK_SIZE ? "non-executable kernel" : "userland", pc);
4117+ goto die;
4118+ }
4119+#endif
4120+
4121+#ifdef CONFIG_PAX_REFCOUNT
4122+ if (fsr_fs(ifsr) == FAULT_CODE_DEBUG) {
4123+ unsigned int bkpt;
4124+
4125+ if (!probe_kernel_address(pc, bkpt) && cpu_to_le32(bkpt) == 0xe12f1073) {
4126+ current->thread.error_code = ifsr;
4127+ current->thread.trap_no = 0;
4128+ pax_report_refcount_overflow(regs);
4129+ fixup_exception(regs);
4130+ return;
4131+ }
4132+ }
4133+#endif
4134
4135 if (!inf->fn(addr, ifsr | FSR_LNX_PF, regs))
4136 return;
4137
4138+die:
4139 printk(KERN_ALERT "Unhandled prefetch abort: %s (0x%03x) at 0x%08lx\n",
4140 inf->name, ifsr, addr);
4141
4142diff --git a/arch/arm/mm/fault.h b/arch/arm/mm/fault.h
4143index cf08bdf..772656c 100644
4144--- a/arch/arm/mm/fault.h
4145+++ b/arch/arm/mm/fault.h
4146@@ -3,6 +3,7 @@
4147
4148 /*
4149 * Fault status register encodings. We steal bit 31 for our own purposes.
4150+ * Set when the FSR value is from an instruction fault.
4151 */
4152 #define FSR_LNX_PF (1 << 31)
4153 #define FSR_WRITE (1 << 11)
4154@@ -22,6 +23,17 @@ static inline int fsr_fs(unsigned int fsr)
4155 }
4156 #endif
4157
4158+/* valid for LPAE and !LPAE */
4159+static inline int is_xn_fault(unsigned int fsr)
4160+{
4161+ return ((fsr_fs(fsr) & 0x3c) == 0xc);
4162+}
4163+
4164+static inline int is_domain_fault(unsigned int fsr)
4165+{
4166+ return ((fsr_fs(fsr) & 0xD) == 0x9);
4167+}
4168+
4169 void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs);
4170 unsigned long search_exception_table(unsigned long addr);
4171
4172diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
4173index 2a77ba8..68e6a7a 100644
4174--- a/arch/arm/mm/init.c
4175+++ b/arch/arm/mm/init.c
4176@@ -30,6 +30,8 @@
4177 #include <asm/setup.h>
4178 #include <asm/tlb.h>
4179 #include <asm/fixmap.h>
4180+#include <asm/system_info.h>
4181+#include <asm/cp15.h>
4182
4183 #include <asm/mach/arch.h>
4184 #include <asm/mach/map.h>
4185@@ -627,7 +629,46 @@ void free_initmem(void)
4186 {
4187 #ifdef CONFIG_HAVE_TCM
4188 extern char __tcm_start, __tcm_end;
4189+#endif
4190
4191+#ifdef CONFIG_PAX_KERNEXEC
4192+ unsigned long addr;
4193+ pgd_t *pgd;
4194+ pud_t *pud;
4195+ pmd_t *pmd;
4196+ int cpu_arch = cpu_architecture();
4197+ unsigned int cr = get_cr();
4198+
4199+ if (cpu_arch >= CPU_ARCH_ARMv6 && (cr & CR_XP)) {
4200+ /* make pages tables, etc before .text NX */
4201+ for (addr = PAGE_OFFSET; addr < (unsigned long)_stext; addr += SECTION_SIZE) {
4202+ pgd = pgd_offset_k(addr);
4203+ pud = pud_offset(pgd, addr);
4204+ pmd = pmd_offset(pud, addr);
4205+ __section_update(pmd, addr, PMD_SECT_XN);
4206+ }
4207+ /* make init NX */
4208+ for (addr = (unsigned long)__init_begin; addr < (unsigned long)_sdata; addr += SECTION_SIZE) {
4209+ pgd = pgd_offset_k(addr);
4210+ pud = pud_offset(pgd, addr);
4211+ pmd = pmd_offset(pud, addr);
4212+ __section_update(pmd, addr, PMD_SECT_XN);
4213+ }
4214+ /* make kernel code/rodata RX */
4215+ for (addr = (unsigned long)_stext; addr < (unsigned long)__init_begin; addr += SECTION_SIZE) {
4216+ pgd = pgd_offset_k(addr);
4217+ pud = pud_offset(pgd, addr);
4218+ pmd = pmd_offset(pud, addr);
4219+#ifdef CONFIG_ARM_LPAE
4220+ __section_update(pmd, addr, PMD_SECT_RDONLY);
4221+#else
4222+ __section_update(pmd, addr, PMD_SECT_APX|PMD_SECT_AP_WRITE);
4223+#endif
4224+ }
4225+ }
4226+#endif
4227+
4228+#ifdef CONFIG_HAVE_TCM
4229 poison_init_mem(&__tcm_start, &__tcm_end - &__tcm_start);
4230 free_reserved_area(&__tcm_start, &__tcm_end, -1, "TCM link");
4231 #endif
4232diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
4233index f9c32ba..8540068 100644
4234--- a/arch/arm/mm/ioremap.c
4235+++ b/arch/arm/mm/ioremap.c
4236@@ -392,9 +392,9 @@ __arm_ioremap_exec(phys_addr_t phys_addr, size_t size, bool cached)
4237 unsigned int mtype;
4238
4239 if (cached)
4240- mtype = MT_MEMORY_RWX;
4241+ mtype = MT_MEMORY_RX;
4242 else
4243- mtype = MT_MEMORY_RWX_NONCACHED;
4244+ mtype = MT_MEMORY_RX_NONCACHED;
4245
4246 return __arm_ioremap_caller(phys_addr, size, mtype,
4247 __builtin_return_address(0));
4248diff --git a/arch/arm/mm/mmap.c b/arch/arm/mm/mmap.c
4249index 5e85ed3..b10a7ed 100644
4250--- a/arch/arm/mm/mmap.c
4251+++ b/arch/arm/mm/mmap.c
4252@@ -59,6 +59,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
4253 struct vm_area_struct *vma;
4254 int do_align = 0;
4255 int aliasing = cache_is_vipt_aliasing();
4256+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
4257 struct vm_unmapped_area_info info;
4258
4259 /*
4260@@ -81,6 +82,10 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
4261 if (len > TASK_SIZE)
4262 return -ENOMEM;
4263
4264+#ifdef CONFIG_PAX_RANDMMAP
4265+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
4266+#endif
4267+
4268 if (addr) {
4269 if (do_align)
4270 addr = COLOUR_ALIGN(addr, pgoff);
4271@@ -88,8 +93,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
4272 addr = PAGE_ALIGN(addr);
4273
4274 vma = find_vma(mm, addr);
4275- if (TASK_SIZE - len >= addr &&
4276- (!vma || addr + len <= vma->vm_start))
4277+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
4278 return addr;
4279 }
4280
4281@@ -99,6 +103,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
4282 info.high_limit = TASK_SIZE;
4283 info.align_mask = do_align ? (PAGE_MASK & (SHMLBA - 1)) : 0;
4284 info.align_offset = pgoff << PAGE_SHIFT;
4285+ info.threadstack_offset = offset;
4286 return vm_unmapped_area(&info);
4287 }
4288
4289@@ -112,6 +117,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
4290 unsigned long addr = addr0;
4291 int do_align = 0;
4292 int aliasing = cache_is_vipt_aliasing();
4293+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
4294 struct vm_unmapped_area_info info;
4295
4296 /*
4297@@ -132,6 +138,10 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
4298 return addr;
4299 }
4300
4301+#ifdef CONFIG_PAX_RANDMMAP
4302+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
4303+#endif
4304+
4305 /* requesting a specific address */
4306 if (addr) {
4307 if (do_align)
4308@@ -139,8 +149,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
4309 else
4310 addr = PAGE_ALIGN(addr);
4311 vma = find_vma(mm, addr);
4312- if (TASK_SIZE - len >= addr &&
4313- (!vma || addr + len <= vma->vm_start))
4314+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
4315 return addr;
4316 }
4317
4318@@ -150,6 +159,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
4319 info.high_limit = mm->mmap_base;
4320 info.align_mask = do_align ? (PAGE_MASK & (SHMLBA - 1)) : 0;
4321 info.align_offset = pgoff << PAGE_SHIFT;
4322+ info.threadstack_offset = offset;
4323 addr = vm_unmapped_area(&info);
4324
4325 /*
4326@@ -173,6 +183,10 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
4327 {
4328 unsigned long random_factor = 0UL;
4329
4330+#ifdef CONFIG_PAX_RANDMMAP
4331+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
4332+#endif
4333+
4334 /* 8 bits of randomness in 20 address space bits */
4335 if ((current->flags & PF_RANDOMIZE) &&
4336 !(current->personality & ADDR_NO_RANDOMIZE))
4337@@ -180,9 +194,21 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
4338
4339 if (mmap_is_legacy()) {
4340 mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
4341+
4342+#ifdef CONFIG_PAX_RANDMMAP
4343+ if (mm->pax_flags & MF_PAX_RANDMMAP)
4344+ mm->mmap_base += mm->delta_mmap;
4345+#endif
4346+
4347 mm->get_unmapped_area = arch_get_unmapped_area;
4348 } else {
4349 mm->mmap_base = mmap_base(random_factor);
4350+
4351+#ifdef CONFIG_PAX_RANDMMAP
4352+ if (mm->pax_flags & MF_PAX_RANDMMAP)
4353+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
4354+#endif
4355+
4356 mm->get_unmapped_area = arch_get_unmapped_area_topdown;
4357 }
4358 }
4359diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
4360index b68c6b2..f66c492 100644
4361--- a/arch/arm/mm/mmu.c
4362+++ b/arch/arm/mm/mmu.c
4363@@ -39,6 +39,22 @@
4364 #include "mm.h"
4365 #include "tcm.h"
4366
4367+#if defined(CONFIG_CPU_USE_DOMAINS) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
4368+void modify_domain(unsigned int dom, unsigned int type)
4369+{
4370+ struct thread_info *thread = current_thread_info();
4371+ unsigned int domain = thread->cpu_domain;
4372+ /*
4373+ * DOMAIN_MANAGER might be defined to some other value,
4374+ * use the arch-defined constant
4375+ */
4376+ domain &= ~domain_val(dom, 3);
4377+ thread->cpu_domain = domain | domain_val(dom, type);
4378+ set_domain(thread->cpu_domain);
4379+}
4380+EXPORT_SYMBOL(modify_domain);
4381+#endif
4382+
4383 /*
4384 * empty_zero_page is a special page that is used for
4385 * zero-initialized data and COW.
4386@@ -235,7 +251,15 @@ __setup("noalign", noalign_setup);
4387 #define PROT_PTE_S2_DEVICE PROT_PTE_DEVICE
4388 #define PROT_SECT_DEVICE PMD_TYPE_SECT|PMD_SECT_AP_WRITE
4389
4390-static struct mem_type mem_types[] = {
4391+#ifdef CONFIG_PAX_KERNEXEC
4392+#define L_PTE_KERNEXEC L_PTE_RDONLY
4393+#define PMD_SECT_KERNEXEC PMD_SECT_RDONLY
4394+#else
4395+#define L_PTE_KERNEXEC L_PTE_DIRTY
4396+#define PMD_SECT_KERNEXEC PMD_SECT_AP_WRITE
4397+#endif
4398+
4399+static struct mem_type mem_types[] __read_only = {
4400 [MT_DEVICE] = { /* Strongly ordered / ARMv6 shared device */
4401 .prot_pte = PROT_PTE_DEVICE | L_PTE_MT_DEV_SHARED |
4402 L_PTE_SHARED,
4403@@ -264,19 +288,19 @@ static struct mem_type mem_types[] = {
4404 .prot_sect = PROT_SECT_DEVICE,
4405 .domain = DOMAIN_IO,
4406 },
4407- [MT_UNCACHED] = {
4408+ [MT_UNCACHED_RW] = {
4409 .prot_pte = PROT_PTE_DEVICE,
4410 .prot_l1 = PMD_TYPE_TABLE,
4411 .prot_sect = PMD_TYPE_SECT | PMD_SECT_XN,
4412 .domain = DOMAIN_IO,
4413 },
4414- [MT_CACHECLEAN] = {
4415- .prot_sect = PMD_TYPE_SECT | PMD_SECT_XN,
4416+ [MT_CACHECLEAN_RO] = {
4417+ .prot_sect = PMD_TYPE_SECT | PMD_SECT_XN | PMD_SECT_RDONLY,
4418 .domain = DOMAIN_KERNEL,
4419 },
4420 #ifndef CONFIG_ARM_LPAE
4421- [MT_MINICLEAN] = {
4422- .prot_sect = PMD_TYPE_SECT | PMD_SECT_XN | PMD_SECT_MINICACHE,
4423+ [MT_MINICLEAN_RO] = {
4424+ .prot_sect = PMD_TYPE_SECT | PMD_SECT_MINICACHE | PMD_SECT_XN | PMD_SECT_RDONLY,
4425 .domain = DOMAIN_KERNEL,
4426 },
4427 #endif
4428@@ -284,15 +308,15 @@ static struct mem_type mem_types[] = {
4429 .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
4430 L_PTE_RDONLY,
4431 .prot_l1 = PMD_TYPE_TABLE,
4432- .domain = DOMAIN_USER,
4433+ .domain = DOMAIN_VECTORS,
4434 },
4435 [MT_HIGH_VECTORS] = {
4436 .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
4437 L_PTE_USER | L_PTE_RDONLY,
4438 .prot_l1 = PMD_TYPE_TABLE,
4439- .domain = DOMAIN_USER,
4440+ .domain = DOMAIN_VECTORS,
4441 },
4442- [MT_MEMORY_RWX] = {
4443+ [__MT_MEMORY_RWX] = {
4444 .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY,
4445 .prot_l1 = PMD_TYPE_TABLE,
4446 .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
4447@@ -305,17 +329,30 @@ static struct mem_type mem_types[] = {
4448 .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
4449 .domain = DOMAIN_KERNEL,
4450 },
4451- [MT_ROM] = {
4452- .prot_sect = PMD_TYPE_SECT,
4453+ [MT_MEMORY_RX] = {
4454+ .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_KERNEXEC,
4455+ .prot_l1 = PMD_TYPE_TABLE,
4456+ .prot_sect = PMD_TYPE_SECT | PMD_SECT_KERNEXEC,
4457+ .domain = DOMAIN_KERNEL,
4458+ },
4459+ [MT_ROM_RX] = {
4460+ .prot_sect = PMD_TYPE_SECT | PMD_SECT_RDONLY,
4461 .domain = DOMAIN_KERNEL,
4462 },
4463- [MT_MEMORY_RWX_NONCACHED] = {
4464+ [MT_MEMORY_RW_NONCACHED] = {
4465 .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
4466 L_PTE_MT_BUFFERABLE,
4467 .prot_l1 = PMD_TYPE_TABLE,
4468 .prot_sect = PMD_TYPE_SECT | PMD_SECT_AP_WRITE,
4469 .domain = DOMAIN_KERNEL,
4470 },
4471+ [MT_MEMORY_RX_NONCACHED] = {
4472+ .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_KERNEXEC |
4473+ L_PTE_MT_BUFFERABLE,
4474+ .prot_l1 = PMD_TYPE_TABLE,
4475+ .prot_sect = PMD_TYPE_SECT | PMD_SECT_KERNEXEC,
4476+ .domain = DOMAIN_KERNEL,
4477+ },
4478 [MT_MEMORY_RW_DTCM] = {
4479 .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY |
4480 L_PTE_XN,
4481@@ -323,9 +360,10 @@ static struct mem_type mem_types[] = {
4482 .prot_sect = PMD_TYPE_SECT | PMD_SECT_XN,
4483 .domain = DOMAIN_KERNEL,
4484 },
4485- [MT_MEMORY_RWX_ITCM] = {
4486- .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_DIRTY,
4487+ [MT_MEMORY_RX_ITCM] = {
4488+ .prot_pte = L_PTE_PRESENT | L_PTE_YOUNG | L_PTE_KERNEXEC,
4489 .prot_l1 = PMD_TYPE_TABLE,
4490+ .prot_sect = PMD_TYPE_SECT | PMD_SECT_KERNEXEC,
4491 .domain = DOMAIN_KERNEL,
4492 },
4493 [MT_MEMORY_RW_SO] = {
4494@@ -534,9 +572,14 @@ static void __init build_mem_type_table(void)
4495 * Mark cache clean areas and XIP ROM read only
4496 * from SVC mode and no access from userspace.
4497 */
4498- mem_types[MT_ROM].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
4499- mem_types[MT_MINICLEAN].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
4500- mem_types[MT_CACHECLEAN].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
4501+ mem_types[MT_ROM_RX].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
4502+#ifdef CONFIG_PAX_KERNEXEC
4503+ mem_types[MT_MEMORY_RX].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
4504+ mem_types[MT_MEMORY_RX_NONCACHED].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
4505+ mem_types[MT_MEMORY_RX_ITCM].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
4506+#endif
4507+ mem_types[MT_MINICLEAN_RO].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
4508+ mem_types[MT_CACHECLEAN_RO].prot_sect |= PMD_SECT_APX|PMD_SECT_AP_WRITE;
4509 #endif
4510
4511 if (is_smp()) {
4512@@ -552,13 +595,17 @@ static void __init build_mem_type_table(void)
4513 mem_types[MT_DEVICE_WC].prot_pte |= L_PTE_SHARED;
4514 mem_types[MT_DEVICE_CACHED].prot_sect |= PMD_SECT_S;
4515 mem_types[MT_DEVICE_CACHED].prot_pte |= L_PTE_SHARED;
4516- mem_types[MT_MEMORY_RWX].prot_sect |= PMD_SECT_S;
4517- mem_types[MT_MEMORY_RWX].prot_pte |= L_PTE_SHARED;
4518+ mem_types[__MT_MEMORY_RWX].prot_sect |= PMD_SECT_S;
4519+ mem_types[__MT_MEMORY_RWX].prot_pte |= L_PTE_SHARED;
4520 mem_types[MT_MEMORY_RW].prot_sect |= PMD_SECT_S;
4521 mem_types[MT_MEMORY_RW].prot_pte |= L_PTE_SHARED;
4522+ mem_types[MT_MEMORY_RX].prot_sect |= PMD_SECT_S;
4523+ mem_types[MT_MEMORY_RX].prot_pte |= L_PTE_SHARED;
4524 mem_types[MT_MEMORY_DMA_READY].prot_pte |= L_PTE_SHARED;
4525- mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= PMD_SECT_S;
4526- mem_types[MT_MEMORY_RWX_NONCACHED].prot_pte |= L_PTE_SHARED;
4527+ mem_types[MT_MEMORY_RW_NONCACHED].prot_sect |= PMD_SECT_S;
4528+ mem_types[MT_MEMORY_RW_NONCACHED].prot_pte |= L_PTE_SHARED;
4529+ mem_types[MT_MEMORY_RX_NONCACHED].prot_sect |= PMD_SECT_S;
4530+ mem_types[MT_MEMORY_RX_NONCACHED].prot_pte |= L_PTE_SHARED;
4531 }
4532 }
4533
4534@@ -569,15 +616,20 @@ static void __init build_mem_type_table(void)
4535 if (cpu_arch >= CPU_ARCH_ARMv6) {
4536 if (cpu_arch >= CPU_ARCH_ARMv7 && (cr & CR_TRE)) {
4537 /* Non-cacheable Normal is XCB = 001 */
4538- mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |=
4539+ mem_types[MT_MEMORY_RW_NONCACHED].prot_sect |=
4540+ PMD_SECT_BUFFERED;
4541+ mem_types[MT_MEMORY_RX_NONCACHED].prot_sect |=
4542 PMD_SECT_BUFFERED;
4543 } else {
4544 /* For both ARMv6 and non-TEX-remapping ARMv7 */
4545- mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |=
4546+ mem_types[MT_MEMORY_RW_NONCACHED].prot_sect |=
4547+ PMD_SECT_TEX(1);
4548+ mem_types[MT_MEMORY_RX_NONCACHED].prot_sect |=
4549 PMD_SECT_TEX(1);
4550 }
4551 } else {
4552- mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE;
4553+ mem_types[MT_MEMORY_RW_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE;
4554+ mem_types[MT_MEMORY_RX_NONCACHED].prot_sect |= PMD_SECT_BUFFERABLE;
4555 }
4556
4557 #ifdef CONFIG_ARM_LPAE
4558@@ -593,6 +645,8 @@ static void __init build_mem_type_table(void)
4559 vecs_pgprot |= PTE_EXT_AF;
4560 #endif
4561
4562+ user_pgprot |= __supported_pte_mask;
4563+
4564 for (i = 0; i < 16; i++) {
4565 pteval_t v = pgprot_val(protection_map[i]);
4566 protection_map[i] = __pgprot(v | user_pgprot);
4567@@ -610,21 +664,24 @@ static void __init build_mem_type_table(void)
4568
4569 mem_types[MT_LOW_VECTORS].prot_l1 |= ecc_mask;
4570 mem_types[MT_HIGH_VECTORS].prot_l1 |= ecc_mask;
4571- mem_types[MT_MEMORY_RWX].prot_sect |= ecc_mask | cp->pmd;
4572- mem_types[MT_MEMORY_RWX].prot_pte |= kern_pgprot;
4573+ mem_types[__MT_MEMORY_RWX].prot_sect |= ecc_mask | cp->pmd;
4574+ mem_types[__MT_MEMORY_RWX].prot_pte |= kern_pgprot;
4575 mem_types[MT_MEMORY_RW].prot_sect |= ecc_mask | cp->pmd;
4576 mem_types[MT_MEMORY_RW].prot_pte |= kern_pgprot;
4577+ mem_types[MT_MEMORY_RX].prot_sect |= ecc_mask | cp->pmd;
4578+ mem_types[MT_MEMORY_RX].prot_pte |= kern_pgprot;
4579 mem_types[MT_MEMORY_DMA_READY].prot_pte |= kern_pgprot;
4580- mem_types[MT_MEMORY_RWX_NONCACHED].prot_sect |= ecc_mask;
4581- mem_types[MT_ROM].prot_sect |= cp->pmd;
4582+ mem_types[MT_MEMORY_RW_NONCACHED].prot_sect |= ecc_mask;
4583+ mem_types[MT_MEMORY_RX_NONCACHED].prot_sect |= ecc_mask;
4584+ mem_types[MT_ROM_RX].prot_sect |= cp->pmd;
4585
4586 switch (cp->pmd) {
4587 case PMD_SECT_WT:
4588- mem_types[MT_CACHECLEAN].prot_sect |= PMD_SECT_WT;
4589+ mem_types[MT_CACHECLEAN_RO].prot_sect |= PMD_SECT_WT;
4590 break;
4591 case PMD_SECT_WB:
4592 case PMD_SECT_WBWA:
4593- mem_types[MT_CACHECLEAN].prot_sect |= PMD_SECT_WB;
4594+ mem_types[MT_CACHECLEAN_RO].prot_sect |= PMD_SECT_WB;
4595 break;
4596 }
4597 pr_info("Memory policy: %sData cache %s\n",
4598@@ -842,7 +899,7 @@ static void __init create_mapping(struct map_desc *md)
4599 return;
4600 }
4601
4602- if ((md->type == MT_DEVICE || md->type == MT_ROM) &&
4603+ if ((md->type == MT_DEVICE || md->type == MT_ROM_RX) &&
4604 md->virtual >= PAGE_OFFSET &&
4605 (md->virtual < VMALLOC_START || md->virtual >= VMALLOC_END)) {
4606 printk(KERN_WARNING "BUG: mapping for 0x%08llx"
4607@@ -1257,18 +1314,15 @@ void __init arm_mm_memblock_reserve(void)
4608 * called function. This means you can't use any function or debugging
4609 * method which may touch any device, otherwise the kernel _will_ crash.
4610 */
4611+
4612+static char vectors[PAGE_SIZE * 2] __read_only __aligned(PAGE_SIZE);
4613+
4614 static void __init devicemaps_init(const struct machine_desc *mdesc)
4615 {
4616 struct map_desc map;
4617 unsigned long addr;
4618- void *vectors;
4619
4620- /*
4621- * Allocate the vector page early.
4622- */
4623- vectors = early_alloc(PAGE_SIZE * 2);
4624-
4625- early_trap_init(vectors);
4626+ early_trap_init(&vectors);
4627
4628 for (addr = VMALLOC_START; addr; addr += PMD_SIZE)
4629 pmd_clear(pmd_off_k(addr));
4630@@ -1281,7 +1335,7 @@ static void __init devicemaps_init(const struct machine_desc *mdesc)
4631 map.pfn = __phys_to_pfn(CONFIG_XIP_PHYS_ADDR & SECTION_MASK);
4632 map.virtual = MODULES_VADDR;
4633 map.length = ((unsigned long)_etext - map.virtual + ~SECTION_MASK) & SECTION_MASK;
4634- map.type = MT_ROM;
4635+ map.type = MT_ROM_RX;
4636 create_mapping(&map);
4637 #endif
4638
4639@@ -1292,14 +1346,14 @@ static void __init devicemaps_init(const struct machine_desc *mdesc)
4640 map.pfn = __phys_to_pfn(FLUSH_BASE_PHYS);
4641 map.virtual = FLUSH_BASE;
4642 map.length = SZ_1M;
4643- map.type = MT_CACHECLEAN;
4644+ map.type = MT_CACHECLEAN_RO;
4645 create_mapping(&map);
4646 #endif
4647 #ifdef FLUSH_BASE_MINICACHE
4648 map.pfn = __phys_to_pfn(FLUSH_BASE_PHYS + SZ_1M);
4649 map.virtual = FLUSH_BASE_MINICACHE;
4650 map.length = SZ_1M;
4651- map.type = MT_MINICLEAN;
4652+ map.type = MT_MINICLEAN_RO;
4653 create_mapping(&map);
4654 #endif
4655
4656@@ -1308,7 +1362,7 @@ static void __init devicemaps_init(const struct machine_desc *mdesc)
4657 * location (0xffff0000). If we aren't using high-vectors, also
4658 * create a mapping at the low-vectors virtual address.
4659 */
4660- map.pfn = __phys_to_pfn(virt_to_phys(vectors));
4661+ map.pfn = __phys_to_pfn(virt_to_phys(&vectors));
4662 map.virtual = 0xffff0000;
4663 map.length = PAGE_SIZE;
4664 #ifdef CONFIG_KUSER_HELPERS
4665@@ -1365,8 +1419,10 @@ static void __init kmap_init(void)
4666 static void __init map_lowmem(void)
4667 {
4668 struct memblock_region *reg;
4669+#ifndef CONFIG_PAX_KERNEXEC
4670 unsigned long kernel_x_start = round_down(__pa(_stext), SECTION_SIZE);
4671 unsigned long kernel_x_end = round_up(__pa(__init_end), SECTION_SIZE);
4672+#endif
4673
4674 /* Map all the lowmem memory banks. */
4675 for_each_memblock(memory, reg) {
4676@@ -1379,11 +1435,48 @@ static void __init map_lowmem(void)
4677 if (start >= end)
4678 break;
4679
4680+#ifdef CONFIG_PAX_KERNEXEC
4681+ map.pfn = __phys_to_pfn(start);
4682+ map.virtual = __phys_to_virt(start);
4683+ map.length = end - start;
4684+
4685+ if (map.virtual <= (unsigned long)_stext && ((unsigned long)_end < (map.virtual + map.length))) {
4686+ struct map_desc kernel;
4687+ struct map_desc initmap;
4688+
4689+ /* when freeing initmem we will make this RW */
4690+ initmap.pfn = __phys_to_pfn(__pa(__init_begin));
4691+ initmap.virtual = (unsigned long)__init_begin;
4692+ initmap.length = _sdata - __init_begin;
4693+ initmap.type = __MT_MEMORY_RWX;
4694+ create_mapping(&initmap);
4695+
4696+ /* when freeing initmem we will make this RX */
4697+ kernel.pfn = __phys_to_pfn(__pa(_stext));
4698+ kernel.virtual = (unsigned long)_stext;
4699+ kernel.length = __init_begin - _stext;
4700+ kernel.type = __MT_MEMORY_RWX;
4701+ create_mapping(&kernel);
4702+
4703+ if (map.virtual < (unsigned long)_stext) {
4704+ map.length = (unsigned long)_stext - map.virtual;
4705+ map.type = __MT_MEMORY_RWX;
4706+ create_mapping(&map);
4707+ }
4708+
4709+ map.pfn = __phys_to_pfn(__pa(_sdata));
4710+ map.virtual = (unsigned long)_sdata;
4711+ map.length = end - __pa(_sdata);
4712+ }
4713+
4714+ map.type = MT_MEMORY_RW;
4715+ create_mapping(&map);
4716+#else
4717 if (end < kernel_x_start || start >= kernel_x_end) {
4718 map.pfn = __phys_to_pfn(start);
4719 map.virtual = __phys_to_virt(start);
4720 map.length = end - start;
4721- map.type = MT_MEMORY_RWX;
4722+ map.type = __MT_MEMORY_RWX;
4723
4724 create_mapping(&map);
4725 } else {
4726@@ -1400,7 +1493,7 @@ static void __init map_lowmem(void)
4727 map.pfn = __phys_to_pfn(kernel_x_start);
4728 map.virtual = __phys_to_virt(kernel_x_start);
4729 map.length = kernel_x_end - kernel_x_start;
4730- map.type = MT_MEMORY_RWX;
4731+ map.type = __MT_MEMORY_RWX;
4732
4733 create_mapping(&map);
4734
4735@@ -1413,6 +1506,7 @@ static void __init map_lowmem(void)
4736 create_mapping(&map);
4737 }
4738 }
4739+#endif
4740 }
4741 }
4742
4743diff --git a/arch/arm/plat-iop/setup.c b/arch/arm/plat-iop/setup.c
4744index 5b217f4..c23f40e 100644
4745--- a/arch/arm/plat-iop/setup.c
4746+++ b/arch/arm/plat-iop/setup.c
4747@@ -24,7 +24,7 @@ static struct map_desc iop3xx_std_desc[] __initdata = {
4748 .virtual = IOP3XX_PERIPHERAL_VIRT_BASE,
4749 .pfn = __phys_to_pfn(IOP3XX_PERIPHERAL_PHYS_BASE),
4750 .length = IOP3XX_PERIPHERAL_SIZE,
4751- .type = MT_UNCACHED,
4752+ .type = MT_UNCACHED_RW,
4753 },
4754 };
4755
4756diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
4757index a5bc92d..0bb4730 100644
4758--- a/arch/arm/plat-omap/sram.c
4759+++ b/arch/arm/plat-omap/sram.c
4760@@ -93,6 +93,8 @@ void __init omap_map_sram(unsigned long start, unsigned long size,
4761 * Looks like we need to preserve some bootloader code at the
4762 * beginning of SRAM for jumping to flash for reboot to work...
4763 */
4764+ pax_open_kernel();
4765 memset_io(omap_sram_base + omap_sram_skip, 0,
4766 omap_sram_size - omap_sram_skip);
4767+ pax_close_kernel();
4768 }
4769diff --git a/arch/arm/plat-samsung/include/plat/dma-ops.h b/arch/arm/plat-samsung/include/plat/dma-ops.h
4770index ce6d763..cfea917 100644
4771--- a/arch/arm/plat-samsung/include/plat/dma-ops.h
4772+++ b/arch/arm/plat-samsung/include/plat/dma-ops.h
4773@@ -47,7 +47,7 @@ struct samsung_dma_ops {
4774 int (*started)(unsigned ch);
4775 int (*flush)(unsigned ch);
4776 int (*stop)(unsigned ch);
4777-};
4778+} __no_const;
4779
4780 extern void *samsung_dmadev_get_ops(void);
4781 extern void *s3c_dma_get_ops(void);
4782diff --git a/arch/arm64/include/asm/barrier.h b/arch/arm64/include/asm/barrier.h
4783index 66eb764..b529b84 100644
4784--- a/arch/arm64/include/asm/barrier.h
4785+++ b/arch/arm64/include/asm/barrier.h
4786@@ -41,7 +41,7 @@
4787 do { \
4788 compiletime_assert_atomic_type(*p); \
4789 smp_mb(); \
4790- ACCESS_ONCE(*p) = (v); \
4791+ ACCESS_ONCE_RW(*p) = (v); \
4792 } while (0)
4793
4794 #define smp_load_acquire(p) \
4795diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
4796index 3bf8f4e..5dd5491 100644
4797--- a/arch/arm64/include/asm/uaccess.h
4798+++ b/arch/arm64/include/asm/uaccess.h
4799@@ -99,6 +99,7 @@ static inline void set_fs(mm_segment_t fs)
4800 flag; \
4801 })
4802
4803+#define access_ok_noprefault(type, addr, size) access_ok((type), (addr), (size))
4804 #define access_ok(type, addr, size) __range_ok(addr, size)
4805 #define user_addr_max get_fs
4806
4807diff --git a/arch/avr32/include/asm/cache.h b/arch/avr32/include/asm/cache.h
4808index c3a58a1..78fbf54 100644
4809--- a/arch/avr32/include/asm/cache.h
4810+++ b/arch/avr32/include/asm/cache.h
4811@@ -1,8 +1,10 @@
4812 #ifndef __ASM_AVR32_CACHE_H
4813 #define __ASM_AVR32_CACHE_H
4814
4815+#include <linux/const.h>
4816+
4817 #define L1_CACHE_SHIFT 5
4818-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
4819+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
4820
4821 /*
4822 * Memory returned by kmalloc() may be used for DMA, so we must make
4823diff --git a/arch/avr32/include/asm/elf.h b/arch/avr32/include/asm/elf.h
4824index d232888..87c8df1 100644
4825--- a/arch/avr32/include/asm/elf.h
4826+++ b/arch/avr32/include/asm/elf.h
4827@@ -84,8 +84,14 @@ typedef struct user_fpu_struct elf_fpregset_t;
4828 the loader. We need to make sure that it is out of the way of the program
4829 that it will "exec", and that there is sufficient room for the brk. */
4830
4831-#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
4832+#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
4833
4834+#ifdef CONFIG_PAX_ASLR
4835+#define PAX_ELF_ET_DYN_BASE 0x00001000UL
4836+
4837+#define PAX_DELTA_MMAP_LEN 15
4838+#define PAX_DELTA_STACK_LEN 15
4839+#endif
4840
4841 /* This yields a mask that user programs can use to figure out what
4842 instruction set this CPU supports. This could be done in user space,
4843diff --git a/arch/avr32/include/asm/kmap_types.h b/arch/avr32/include/asm/kmap_types.h
4844index 479330b..53717a8 100644
4845--- a/arch/avr32/include/asm/kmap_types.h
4846+++ b/arch/avr32/include/asm/kmap_types.h
4847@@ -2,9 +2,9 @@
4848 #define __ASM_AVR32_KMAP_TYPES_H
4849
4850 #ifdef CONFIG_DEBUG_HIGHMEM
4851-# define KM_TYPE_NR 29
4852+# define KM_TYPE_NR 30
4853 #else
4854-# define KM_TYPE_NR 14
4855+# define KM_TYPE_NR 15
4856 #endif
4857
4858 #endif /* __ASM_AVR32_KMAP_TYPES_H */
4859diff --git a/arch/avr32/mm/fault.c b/arch/avr32/mm/fault.c
4860index 0eca933..eb78c7b 100644
4861--- a/arch/avr32/mm/fault.c
4862+++ b/arch/avr32/mm/fault.c
4863@@ -41,6 +41,23 @@ static inline int notify_page_fault(struct pt_regs *regs, int trap)
4864
4865 int exception_trace = 1;
4866
4867+#ifdef CONFIG_PAX_PAGEEXEC
4868+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
4869+{
4870+ unsigned long i;
4871+
4872+ printk(KERN_ERR "PAX: bytes at PC: ");
4873+ for (i = 0; i < 20; i++) {
4874+ unsigned char c;
4875+ if (get_user(c, (unsigned char *)pc+i))
4876+ printk(KERN_CONT "???????? ");
4877+ else
4878+ printk(KERN_CONT "%02x ", c);
4879+ }
4880+ printk("\n");
4881+}
4882+#endif
4883+
4884 /*
4885 * This routine handles page faults. It determines the address and the
4886 * problem, and then passes it off to one of the appropriate routines.
4887@@ -176,6 +193,16 @@ bad_area:
4888 up_read(&mm->mmap_sem);
4889
4890 if (user_mode(regs)) {
4891+
4892+#ifdef CONFIG_PAX_PAGEEXEC
4893+ if (mm->pax_flags & MF_PAX_PAGEEXEC) {
4894+ if (ecr == ECR_PROTECTION_X || ecr == ECR_TLB_MISS_X) {
4895+ pax_report_fault(regs, (void *)regs->pc, (void *)regs->sp);
4896+ do_group_exit(SIGKILL);
4897+ }
4898+ }
4899+#endif
4900+
4901 if (exception_trace && printk_ratelimit())
4902 printk("%s%s[%d]: segfault at %08lx pc %08lx "
4903 "sp %08lx ecr %lu\n",
4904diff --git a/arch/blackfin/include/asm/cache.h b/arch/blackfin/include/asm/cache.h
4905index 568885a..f8008df 100644
4906--- a/arch/blackfin/include/asm/cache.h
4907+++ b/arch/blackfin/include/asm/cache.h
4908@@ -7,6 +7,7 @@
4909 #ifndef __ARCH_BLACKFIN_CACHE_H
4910 #define __ARCH_BLACKFIN_CACHE_H
4911
4912+#include <linux/const.h>
4913 #include <linux/linkage.h> /* for asmlinkage */
4914
4915 /*
4916@@ -14,7 +15,7 @@
4917 * Blackfin loads 32 bytes for cache
4918 */
4919 #define L1_CACHE_SHIFT 5
4920-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
4921+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
4922 #define SMP_CACHE_BYTES L1_CACHE_BYTES
4923
4924 #define ARCH_DMA_MINALIGN L1_CACHE_BYTES
4925diff --git a/arch/cris/include/arch-v10/arch/cache.h b/arch/cris/include/arch-v10/arch/cache.h
4926index aea2718..3639a60 100644
4927--- a/arch/cris/include/arch-v10/arch/cache.h
4928+++ b/arch/cris/include/arch-v10/arch/cache.h
4929@@ -1,8 +1,9 @@
4930 #ifndef _ASM_ARCH_CACHE_H
4931 #define _ASM_ARCH_CACHE_H
4932
4933+#include <linux/const.h>
4934 /* Etrax 100LX have 32-byte cache-lines. */
4935-#define L1_CACHE_BYTES 32
4936 #define L1_CACHE_SHIFT 5
4937+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
4938
4939 #endif /* _ASM_ARCH_CACHE_H */
4940diff --git a/arch/cris/include/arch-v32/arch/cache.h b/arch/cris/include/arch-v32/arch/cache.h
4941index 7caf25d..ee65ac5 100644
4942--- a/arch/cris/include/arch-v32/arch/cache.h
4943+++ b/arch/cris/include/arch-v32/arch/cache.h
4944@@ -1,11 +1,12 @@
4945 #ifndef _ASM_CRIS_ARCH_CACHE_H
4946 #define _ASM_CRIS_ARCH_CACHE_H
4947
4948+#include <linux/const.h>
4949 #include <arch/hwregs/dma.h>
4950
4951 /* A cache-line is 32 bytes. */
4952-#define L1_CACHE_BYTES 32
4953 #define L1_CACHE_SHIFT 5
4954+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
4955
4956 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
4957
4958diff --git a/arch/frv/include/asm/atomic.h b/arch/frv/include/asm/atomic.h
4959index b86329d..6709906 100644
4960--- a/arch/frv/include/asm/atomic.h
4961+++ b/arch/frv/include/asm/atomic.h
4962@@ -186,6 +186,16 @@ static inline void atomic64_dec(atomic64_t *v)
4963 #define atomic64_cmpxchg(v, old, new) (__cmpxchg_64(old, new, &(v)->counter))
4964 #define atomic64_xchg(v, new) (__xchg_64(new, &(v)->counter))
4965
4966+#define atomic64_read_unchecked(v) atomic64_read(v)
4967+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i))
4968+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v))
4969+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v))
4970+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v))
4971+#define atomic64_inc_unchecked(v) atomic64_inc(v)
4972+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v)
4973+#define atomic64_dec_unchecked(v) atomic64_dec(v)
4974+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n))
4975+
4976 static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
4977 {
4978 int c, old;
4979diff --git a/arch/frv/include/asm/cache.h b/arch/frv/include/asm/cache.h
4980index 2797163..c2a401d 100644
4981--- a/arch/frv/include/asm/cache.h
4982+++ b/arch/frv/include/asm/cache.h
4983@@ -12,10 +12,11 @@
4984 #ifndef __ASM_CACHE_H
4985 #define __ASM_CACHE_H
4986
4987+#include <linux/const.h>
4988
4989 /* bytes per L1 cache line */
4990 #define L1_CACHE_SHIFT (CONFIG_FRV_L1_CACHE_SHIFT)
4991-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
4992+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
4993
4994 #define __cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES)))
4995 #define ____cacheline_aligned __attribute__((aligned(L1_CACHE_BYTES)))
4996diff --git a/arch/frv/include/asm/kmap_types.h b/arch/frv/include/asm/kmap_types.h
4997index 43901f2..0d8b865 100644
4998--- a/arch/frv/include/asm/kmap_types.h
4999+++ b/arch/frv/include/asm/kmap_types.h
5000@@ -2,6 +2,6 @@
5001 #ifndef _ASM_KMAP_TYPES_H
5002 #define _ASM_KMAP_TYPES_H
5003
5004-#define KM_TYPE_NR 17
5005+#define KM_TYPE_NR 18
5006
5007 #endif
5008diff --git a/arch/frv/mm/elf-fdpic.c b/arch/frv/mm/elf-fdpic.c
5009index 836f147..4cf23f5 100644
5010--- a/arch/frv/mm/elf-fdpic.c
5011+++ b/arch/frv/mm/elf-fdpic.c
5012@@ -61,6 +61,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
5013 {
5014 struct vm_area_struct *vma;
5015 struct vm_unmapped_area_info info;
5016+ unsigned long offset = gr_rand_threadstack_offset(current->mm, filp, flags);
5017
5018 if (len > TASK_SIZE)
5019 return -ENOMEM;
5020@@ -73,8 +74,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
5021 if (addr) {
5022 addr = PAGE_ALIGN(addr);
5023 vma = find_vma(current->mm, addr);
5024- if (TASK_SIZE - len >= addr &&
5025- (!vma || addr + len <= vma->vm_start))
5026+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
5027 goto success;
5028 }
5029
5030@@ -85,6 +85,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
5031 info.high_limit = (current->mm->start_stack - 0x00200000);
5032 info.align_mask = 0;
5033 info.align_offset = 0;
5034+ info.threadstack_offset = offset;
5035 addr = vm_unmapped_area(&info);
5036 if (!(addr & ~PAGE_MASK))
5037 goto success;
5038diff --git a/arch/hexagon/include/asm/cache.h b/arch/hexagon/include/asm/cache.h
5039index f4ca594..adc72fd6 100644
5040--- a/arch/hexagon/include/asm/cache.h
5041+++ b/arch/hexagon/include/asm/cache.h
5042@@ -21,9 +21,11 @@
5043 #ifndef __ASM_CACHE_H
5044 #define __ASM_CACHE_H
5045
5046+#include <linux/const.h>
5047+
5048 /* Bytes per L1 cache line */
5049-#define L1_CACHE_SHIFT (5)
5050-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
5051+#define L1_CACHE_SHIFT 5
5052+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
5053
5054 #define __cacheline_aligned __aligned(L1_CACHE_BYTES)
5055 #define ____cacheline_aligned __aligned(L1_CACHE_BYTES)
5056diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
5057index 12c3afe..b1abab2 100644
5058--- a/arch/ia64/Kconfig
5059+++ b/arch/ia64/Kconfig
5060@@ -546,6 +546,7 @@ source "drivers/sn/Kconfig"
5061 config KEXEC
5062 bool "kexec system call"
5063 depends on !IA64_HP_SIM && (!SMP || HOTPLUG_CPU)
5064+ depends on !GRKERNSEC_KMEM
5065 help
5066 kexec is a system call that implements the ability to shutdown your
5067 current kernel, and to start another kernel. It is like a reboot
5068diff --git a/arch/ia64/include/asm/atomic.h b/arch/ia64/include/asm/atomic.h
5069index 6e6fe18..a6ae668 100644
5070--- a/arch/ia64/include/asm/atomic.h
5071+++ b/arch/ia64/include/asm/atomic.h
5072@@ -208,6 +208,16 @@ atomic64_add_negative (__s64 i, atomic64_t *v)
5073 #define atomic64_inc(v) atomic64_add(1, (v))
5074 #define atomic64_dec(v) atomic64_sub(1, (v))
5075
5076+#define atomic64_read_unchecked(v) atomic64_read(v)
5077+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i))
5078+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v))
5079+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v))
5080+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v))
5081+#define atomic64_inc_unchecked(v) atomic64_inc(v)
5082+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v)
5083+#define atomic64_dec_unchecked(v) atomic64_dec(v)
5084+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n))
5085+
5086 /* Atomic operations are already serializing */
5087 #define smp_mb__before_atomic_dec() barrier()
5088 #define smp_mb__after_atomic_dec() barrier()
5089diff --git a/arch/ia64/include/asm/barrier.h b/arch/ia64/include/asm/barrier.h
5090index d0a69aa..142f878 100644
5091--- a/arch/ia64/include/asm/barrier.h
5092+++ b/arch/ia64/include/asm/barrier.h
5093@@ -64,7 +64,7 @@
5094 do { \
5095 compiletime_assert_atomic_type(*p); \
5096 barrier(); \
5097- ACCESS_ONCE(*p) = (v); \
5098+ ACCESS_ONCE_RW(*p) = (v); \
5099 } while (0)
5100
5101 #define smp_load_acquire(p) \
5102diff --git a/arch/ia64/include/asm/cache.h b/arch/ia64/include/asm/cache.h
5103index 988254a..e1ee885 100644
5104--- a/arch/ia64/include/asm/cache.h
5105+++ b/arch/ia64/include/asm/cache.h
5106@@ -1,6 +1,7 @@
5107 #ifndef _ASM_IA64_CACHE_H
5108 #define _ASM_IA64_CACHE_H
5109
5110+#include <linux/const.h>
5111
5112 /*
5113 * Copyright (C) 1998-2000 Hewlett-Packard Co
5114@@ -9,7 +10,7 @@
5115
5116 /* Bytes per L1 (data) cache line. */
5117 #define L1_CACHE_SHIFT CONFIG_IA64_L1_CACHE_SHIFT
5118-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
5119+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
5120
5121 #ifdef CONFIG_SMP
5122 # define SMP_CACHE_SHIFT L1_CACHE_SHIFT
5123diff --git a/arch/ia64/include/asm/elf.h b/arch/ia64/include/asm/elf.h
5124index 5a83c5c..4d7f553 100644
5125--- a/arch/ia64/include/asm/elf.h
5126+++ b/arch/ia64/include/asm/elf.h
5127@@ -42,6 +42,13 @@
5128 */
5129 #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x800000000UL)
5130
5131+#ifdef CONFIG_PAX_ASLR
5132+#define PAX_ELF_ET_DYN_BASE (current->personality == PER_LINUX32 ? 0x08048000UL : 0x4000000000000000UL)
5133+
5134+#define PAX_DELTA_MMAP_LEN (current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13)
5135+#define PAX_DELTA_STACK_LEN (current->personality == PER_LINUX32 ? 16 : 3*PAGE_SHIFT - 13)
5136+#endif
5137+
5138 #define PT_IA_64_UNWIND 0x70000001
5139
5140 /* IA-64 relocations: */
5141diff --git a/arch/ia64/include/asm/pgalloc.h b/arch/ia64/include/asm/pgalloc.h
5142index 5767cdf..7462574 100644
5143--- a/arch/ia64/include/asm/pgalloc.h
5144+++ b/arch/ia64/include/asm/pgalloc.h
5145@@ -39,6 +39,12 @@ pgd_populate(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud)
5146 pgd_val(*pgd_entry) = __pa(pud);
5147 }
5148
5149+static inline void
5150+pgd_populate_kernel(struct mm_struct *mm, pgd_t * pgd_entry, pud_t * pud)
5151+{
5152+ pgd_populate(mm, pgd_entry, pud);
5153+}
5154+
5155 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
5156 {
5157 return quicklist_alloc(0, GFP_KERNEL, NULL);
5158@@ -57,6 +63,12 @@ pud_populate(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
5159 pud_val(*pud_entry) = __pa(pmd);
5160 }
5161
5162+static inline void
5163+pud_populate_kernel(struct mm_struct *mm, pud_t * pud_entry, pmd_t * pmd)
5164+{
5165+ pud_populate(mm, pud_entry, pmd);
5166+}
5167+
5168 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
5169 {
5170 return quicklist_alloc(0, GFP_KERNEL, NULL);
5171diff --git a/arch/ia64/include/asm/pgtable.h b/arch/ia64/include/asm/pgtable.h
5172index 7935115..c0eca6a 100644
5173--- a/arch/ia64/include/asm/pgtable.h
5174+++ b/arch/ia64/include/asm/pgtable.h
5175@@ -12,7 +12,7 @@
5176 * David Mosberger-Tang <davidm@hpl.hp.com>
5177 */
5178
5179-
5180+#include <linux/const.h>
5181 #include <asm/mman.h>
5182 #include <asm/page.h>
5183 #include <asm/processor.h>
5184@@ -142,6 +142,17 @@
5185 #define PAGE_READONLY __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R)
5186 #define PAGE_COPY __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R)
5187 #define PAGE_COPY_EXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RX)
5188+
5189+#ifdef CONFIG_PAX_PAGEEXEC
5190+# define PAGE_SHARED_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_RW)
5191+# define PAGE_READONLY_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R)
5192+# define PAGE_COPY_NOEXEC __pgprot(__ACCESS_BITS | _PAGE_PL_3 | _PAGE_AR_R)
5193+#else
5194+# define PAGE_SHARED_NOEXEC PAGE_SHARED
5195+# define PAGE_READONLY_NOEXEC PAGE_READONLY
5196+# define PAGE_COPY_NOEXEC PAGE_COPY
5197+#endif
5198+
5199 #define PAGE_GATE __pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_X_RX)
5200 #define PAGE_KERNEL __pgprot(__DIRTY_BITS | _PAGE_PL_0 | _PAGE_AR_RWX)
5201 #define PAGE_KERNELRX __pgprot(__ACCESS_BITS | _PAGE_PL_0 | _PAGE_AR_RX)
5202diff --git a/arch/ia64/include/asm/spinlock.h b/arch/ia64/include/asm/spinlock.h
5203index 45698cd..e8e2dbc 100644
5204--- a/arch/ia64/include/asm/spinlock.h
5205+++ b/arch/ia64/include/asm/spinlock.h
5206@@ -71,7 +71,7 @@ static __always_inline void __ticket_spin_unlock(arch_spinlock_t *lock)
5207 unsigned short *p = (unsigned short *)&lock->lock + 1, tmp;
5208
5209 asm volatile ("ld2.bias %0=[%1]" : "=r"(tmp) : "r"(p));
5210- ACCESS_ONCE(*p) = (tmp + 2) & ~1;
5211+ ACCESS_ONCE_RW(*p) = (tmp + 2) & ~1;
5212 }
5213
5214 static __always_inline void __ticket_spin_unlock_wait(arch_spinlock_t *lock)
5215diff --git a/arch/ia64/include/asm/uaccess.h b/arch/ia64/include/asm/uaccess.h
5216index 449c8c0..3d4b1e9 100644
5217--- a/arch/ia64/include/asm/uaccess.h
5218+++ b/arch/ia64/include/asm/uaccess.h
5219@@ -70,6 +70,7 @@
5220 && ((segment).seg == KERNEL_DS.seg \
5221 || likely(REGION_OFFSET((unsigned long) (addr)) < RGN_MAP_LIMIT))); \
5222 })
5223+#define access_ok_noprefault(type, addr, size) access_ok((type), (addr), (size))
5224 #define access_ok(type, addr, size) __access_ok((addr), (size), get_fs())
5225
5226 /*
5227@@ -240,12 +241,24 @@ extern unsigned long __must_check __copy_user (void __user *to, const void __use
5228 static inline unsigned long
5229 __copy_to_user (void __user *to, const void *from, unsigned long count)
5230 {
5231+ if (count > INT_MAX)
5232+ return count;
5233+
5234+ if (!__builtin_constant_p(count))
5235+ check_object_size(from, count, true);
5236+
5237 return __copy_user(to, (__force void __user *) from, count);
5238 }
5239
5240 static inline unsigned long
5241 __copy_from_user (void *to, const void __user *from, unsigned long count)
5242 {
5243+ if (count > INT_MAX)
5244+ return count;
5245+
5246+ if (!__builtin_constant_p(count))
5247+ check_object_size(to, count, false);
5248+
5249 return __copy_user((__force void __user *) to, from, count);
5250 }
5251
5252@@ -255,10 +268,13 @@ __copy_from_user (void *to, const void __user *from, unsigned long count)
5253 ({ \
5254 void __user *__cu_to = (to); \
5255 const void *__cu_from = (from); \
5256- long __cu_len = (n); \
5257+ unsigned long __cu_len = (n); \
5258 \
5259- if (__access_ok(__cu_to, __cu_len, get_fs())) \
5260+ if (__cu_len <= INT_MAX && __access_ok(__cu_to, __cu_len, get_fs())) { \
5261+ if (!__builtin_constant_p(n)) \
5262+ check_object_size(__cu_from, __cu_len, true); \
5263 __cu_len = __copy_user(__cu_to, (__force void __user *) __cu_from, __cu_len); \
5264+ } \
5265 __cu_len; \
5266 })
5267
5268@@ -266,11 +282,14 @@ __copy_from_user (void *to, const void __user *from, unsigned long count)
5269 ({ \
5270 void *__cu_to = (to); \
5271 const void __user *__cu_from = (from); \
5272- long __cu_len = (n); \
5273+ unsigned long __cu_len = (n); \
5274 \
5275 __chk_user_ptr(__cu_from); \
5276- if (__access_ok(__cu_from, __cu_len, get_fs())) \
5277+ if (__cu_len <= INT_MAX && __access_ok(__cu_from, __cu_len, get_fs())) { \
5278+ if (!__builtin_constant_p(n)) \
5279+ check_object_size(__cu_to, __cu_len, false); \
5280 __cu_len = __copy_user((__force void __user *) __cu_to, __cu_from, __cu_len); \
5281+ } \
5282 __cu_len; \
5283 })
5284
5285diff --git a/arch/ia64/kernel/module.c b/arch/ia64/kernel/module.c
5286index 24603be..948052d 100644
5287--- a/arch/ia64/kernel/module.c
5288+++ b/arch/ia64/kernel/module.c
5289@@ -307,8 +307,7 @@ plt_target (struct plt_entry *plt)
5290 void
5291 module_free (struct module *mod, void *module_region)
5292 {
5293- if (mod && mod->arch.init_unw_table &&
5294- module_region == mod->module_init) {
5295+ if (mod && mod->arch.init_unw_table && module_region == mod->module_init_rx) {
5296 unw_remove_unwind_table(mod->arch.init_unw_table);
5297 mod->arch.init_unw_table = NULL;
5298 }
5299@@ -494,15 +493,39 @@ module_frob_arch_sections (Elf_Ehdr *ehdr, Elf_Shdr *sechdrs, char *secstrings,
5300 }
5301
5302 static inline int
5303+in_init_rx (const struct module *mod, uint64_t addr)
5304+{
5305+ return addr - (uint64_t) mod->module_init_rx < mod->init_size_rx;
5306+}
5307+
5308+static inline int
5309+in_init_rw (const struct module *mod, uint64_t addr)
5310+{
5311+ return addr - (uint64_t) mod->module_init_rw < mod->init_size_rw;
5312+}
5313+
5314+static inline int
5315 in_init (const struct module *mod, uint64_t addr)
5316 {
5317- return addr - (uint64_t) mod->module_init < mod->init_size;
5318+ return in_init_rx(mod, addr) || in_init_rw(mod, addr);
5319+}
5320+
5321+static inline int
5322+in_core_rx (const struct module *mod, uint64_t addr)
5323+{
5324+ return addr - (uint64_t) mod->module_core_rx < mod->core_size_rx;
5325+}
5326+
5327+static inline int
5328+in_core_rw (const struct module *mod, uint64_t addr)
5329+{
5330+ return addr - (uint64_t) mod->module_core_rw < mod->core_size_rw;
5331 }
5332
5333 static inline int
5334 in_core (const struct module *mod, uint64_t addr)
5335 {
5336- return addr - (uint64_t) mod->module_core < mod->core_size;
5337+ return in_core_rx(mod, addr) || in_core_rw(mod, addr);
5338 }
5339
5340 static inline int
5341@@ -685,7 +708,14 @@ do_reloc (struct module *mod, uint8_t r_type, Elf64_Sym *sym, uint64_t addend,
5342 break;
5343
5344 case RV_BDREL:
5345- val -= (uint64_t) (in_init(mod, val) ? mod->module_init : mod->module_core);
5346+ if (in_init_rx(mod, val))
5347+ val -= (uint64_t) mod->module_init_rx;
5348+ else if (in_init_rw(mod, val))
5349+ val -= (uint64_t) mod->module_init_rw;
5350+ else if (in_core_rx(mod, val))
5351+ val -= (uint64_t) mod->module_core_rx;
5352+ else if (in_core_rw(mod, val))
5353+ val -= (uint64_t) mod->module_core_rw;
5354 break;
5355
5356 case RV_LTV:
5357@@ -820,15 +850,15 @@ apply_relocate_add (Elf64_Shdr *sechdrs, const char *strtab, unsigned int symind
5358 * addresses have been selected...
5359 */
5360 uint64_t gp;
5361- if (mod->core_size > MAX_LTOFF)
5362+ if (mod->core_size_rx + mod->core_size_rw > MAX_LTOFF)
5363 /*
5364 * This takes advantage of fact that SHF_ARCH_SMALL gets allocated
5365 * at the end of the module.
5366 */
5367- gp = mod->core_size - MAX_LTOFF / 2;
5368+ gp = mod->core_size_rx + mod->core_size_rw - MAX_LTOFF / 2;
5369 else
5370- gp = mod->core_size / 2;
5371- gp = (uint64_t) mod->module_core + ((gp + 7) & -8);
5372+ gp = (mod->core_size_rx + mod->core_size_rw) / 2;
5373+ gp = (uint64_t) mod->module_core_rx + ((gp + 7) & -8);
5374 mod->arch.gp = gp;
5375 DEBUGP("%s: placing gp at 0x%lx\n", __func__, gp);
5376 }
5377diff --git a/arch/ia64/kernel/palinfo.c b/arch/ia64/kernel/palinfo.c
5378index c39c3cd..3c77738 100644
5379--- a/arch/ia64/kernel/palinfo.c
5380+++ b/arch/ia64/kernel/palinfo.c
5381@@ -980,7 +980,7 @@ static int palinfo_cpu_callback(struct notifier_block *nfb,
5382 return NOTIFY_OK;
5383 }
5384
5385-static struct notifier_block __refdata palinfo_cpu_notifier =
5386+static struct notifier_block palinfo_cpu_notifier =
5387 {
5388 .notifier_call = palinfo_cpu_callback,
5389 .priority = 0,
5390diff --git a/arch/ia64/kernel/sys_ia64.c b/arch/ia64/kernel/sys_ia64.c
5391index 41e33f8..65180b2a 100644
5392--- a/arch/ia64/kernel/sys_ia64.c
5393+++ b/arch/ia64/kernel/sys_ia64.c
5394@@ -28,6 +28,7 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len
5395 unsigned long align_mask = 0;
5396 struct mm_struct *mm = current->mm;
5397 struct vm_unmapped_area_info info;
5398+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
5399
5400 if (len > RGN_MAP_LIMIT)
5401 return -ENOMEM;
5402@@ -43,6 +44,13 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len
5403 if (REGION_NUMBER(addr) == RGN_HPAGE)
5404 addr = 0;
5405 #endif
5406+
5407+#ifdef CONFIG_PAX_RANDMMAP
5408+ if (mm->pax_flags & MF_PAX_RANDMMAP)
5409+ addr = mm->free_area_cache;
5410+ else
5411+#endif
5412+
5413 if (!addr)
5414 addr = TASK_UNMAPPED_BASE;
5415
5416@@ -61,6 +69,7 @@ arch_get_unmapped_area (struct file *filp, unsigned long addr, unsigned long len
5417 info.high_limit = TASK_SIZE;
5418 info.align_mask = align_mask;
5419 info.align_offset = 0;
5420+ info.threadstack_offset = offset;
5421 return vm_unmapped_area(&info);
5422 }
5423
5424diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S
5425index 84f8a52..7c76178 100644
5426--- a/arch/ia64/kernel/vmlinux.lds.S
5427+++ b/arch/ia64/kernel/vmlinux.lds.S
5428@@ -192,7 +192,7 @@ SECTIONS {
5429 /* Per-cpu data: */
5430 . = ALIGN(PERCPU_PAGE_SIZE);
5431 PERCPU_VADDR(SMP_CACHE_BYTES, PERCPU_ADDR, :percpu)
5432- __phys_per_cpu_start = __per_cpu_load;
5433+ __phys_per_cpu_start = per_cpu_load;
5434 /*
5435 * ensure percpu data fits
5436 * into percpu page size
5437diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c
5438index 7225dad..2a7c8256 100644
5439--- a/arch/ia64/mm/fault.c
5440+++ b/arch/ia64/mm/fault.c
5441@@ -72,6 +72,23 @@ mapped_kernel_page_is_present (unsigned long address)
5442 return pte_present(pte);
5443 }
5444
5445+#ifdef CONFIG_PAX_PAGEEXEC
5446+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
5447+{
5448+ unsigned long i;
5449+
5450+ printk(KERN_ERR "PAX: bytes at PC: ");
5451+ for (i = 0; i < 8; i++) {
5452+ unsigned int c;
5453+ if (get_user(c, (unsigned int *)pc+i))
5454+ printk(KERN_CONT "???????? ");
5455+ else
5456+ printk(KERN_CONT "%08x ", c);
5457+ }
5458+ printk("\n");
5459+}
5460+#endif
5461+
5462 # define VM_READ_BIT 0
5463 # define VM_WRITE_BIT 1
5464 # define VM_EXEC_BIT 2
5465@@ -151,8 +168,21 @@ retry:
5466 if (((isr >> IA64_ISR_R_BIT) & 1UL) && (!(vma->vm_flags & (VM_READ | VM_WRITE))))
5467 goto bad_area;
5468
5469- if ((vma->vm_flags & mask) != mask)
5470+ if ((vma->vm_flags & mask) != mask) {
5471+
5472+#ifdef CONFIG_PAX_PAGEEXEC
5473+ if (!(vma->vm_flags & VM_EXEC) && (mask & VM_EXEC)) {
5474+ if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || address != regs->cr_iip)
5475+ goto bad_area;
5476+
5477+ up_read(&mm->mmap_sem);
5478+ pax_report_fault(regs, (void *)regs->cr_iip, (void *)regs->r12);
5479+ do_group_exit(SIGKILL);
5480+ }
5481+#endif
5482+
5483 goto bad_area;
5484+ }
5485
5486 /*
5487 * If for any reason at all we couldn't handle the fault, make
5488diff --git a/arch/ia64/mm/hugetlbpage.c b/arch/ia64/mm/hugetlbpage.c
5489index 76069c1..c2aa816 100644
5490--- a/arch/ia64/mm/hugetlbpage.c
5491+++ b/arch/ia64/mm/hugetlbpage.c
5492@@ -149,6 +149,7 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, u
5493 unsigned long pgoff, unsigned long flags)
5494 {
5495 struct vm_unmapped_area_info info;
5496+ unsigned long offset = gr_rand_threadstack_offset(current->mm, file, flags);
5497
5498 if (len > RGN_MAP_LIMIT)
5499 return -ENOMEM;
5500@@ -172,6 +173,7 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, u
5501 info.high_limit = HPAGE_REGION_BASE + RGN_MAP_LIMIT;
5502 info.align_mask = PAGE_MASK & (HPAGE_SIZE - 1);
5503 info.align_offset = 0;
5504+ info.threadstack_offset = offset;
5505 return vm_unmapped_area(&info);
5506 }
5507
5508diff --git a/arch/ia64/mm/init.c b/arch/ia64/mm/init.c
5509index 25c3502..560dae7 100644
5510--- a/arch/ia64/mm/init.c
5511+++ b/arch/ia64/mm/init.c
5512@@ -120,6 +120,19 @@ ia64_init_addr_space (void)
5513 vma->vm_start = current->thread.rbs_bot & PAGE_MASK;
5514 vma->vm_end = vma->vm_start + PAGE_SIZE;
5515 vma->vm_flags = VM_DATA_DEFAULT_FLAGS|VM_GROWSUP|VM_ACCOUNT;
5516+
5517+#ifdef CONFIG_PAX_PAGEEXEC
5518+ if (current->mm->pax_flags & MF_PAX_PAGEEXEC) {
5519+ vma->vm_flags &= ~VM_EXEC;
5520+
5521+#ifdef CONFIG_PAX_MPROTECT
5522+ if (current->mm->pax_flags & MF_PAX_MPROTECT)
5523+ vma->vm_flags &= ~VM_MAYEXEC;
5524+#endif
5525+
5526+ }
5527+#endif
5528+
5529 vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
5530 down_write(&current->mm->mmap_sem);
5531 if (insert_vm_struct(current->mm, vma)) {
5532diff --git a/arch/m32r/include/asm/cache.h b/arch/m32r/include/asm/cache.h
5533index 40b3ee9..8c2c112 100644
5534--- a/arch/m32r/include/asm/cache.h
5535+++ b/arch/m32r/include/asm/cache.h
5536@@ -1,8 +1,10 @@
5537 #ifndef _ASM_M32R_CACHE_H
5538 #define _ASM_M32R_CACHE_H
5539
5540+#include <linux/const.h>
5541+
5542 /* L1 cache line size */
5543 #define L1_CACHE_SHIFT 4
5544-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
5545+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
5546
5547 #endif /* _ASM_M32R_CACHE_H */
5548diff --git a/arch/m32r/lib/usercopy.c b/arch/m32r/lib/usercopy.c
5549index 82abd15..d95ae5d 100644
5550--- a/arch/m32r/lib/usercopy.c
5551+++ b/arch/m32r/lib/usercopy.c
5552@@ -14,6 +14,9 @@
5553 unsigned long
5554 __generic_copy_to_user(void __user *to, const void *from, unsigned long n)
5555 {
5556+ if ((long)n < 0)
5557+ return n;
5558+
5559 prefetch(from);
5560 if (access_ok(VERIFY_WRITE, to, n))
5561 __copy_user(to,from,n);
5562@@ -23,6 +26,9 @@ __generic_copy_to_user(void __user *to, const void *from, unsigned long n)
5563 unsigned long
5564 __generic_copy_from_user(void *to, const void __user *from, unsigned long n)
5565 {
5566+ if ((long)n < 0)
5567+ return n;
5568+
5569 prefetchw(to);
5570 if (access_ok(VERIFY_READ, from, n))
5571 __copy_user_zeroing(to,from,n);
5572diff --git a/arch/m68k/include/asm/cache.h b/arch/m68k/include/asm/cache.h
5573index 0395c51..5f26031 100644
5574--- a/arch/m68k/include/asm/cache.h
5575+++ b/arch/m68k/include/asm/cache.h
5576@@ -4,9 +4,11 @@
5577 #ifndef __ARCH_M68K_CACHE_H
5578 #define __ARCH_M68K_CACHE_H
5579
5580+#include <linux/const.h>
5581+
5582 /* bytes per L1 cache line */
5583 #define L1_CACHE_SHIFT 4
5584-#define L1_CACHE_BYTES (1<< L1_CACHE_SHIFT)
5585+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
5586
5587 #define ARCH_DMA_MINALIGN L1_CACHE_BYTES
5588
5589diff --git a/arch/metag/include/asm/barrier.h b/arch/metag/include/asm/barrier.h
5590index 2d6f0de..de5f5ac 100644
5591--- a/arch/metag/include/asm/barrier.h
5592+++ b/arch/metag/include/asm/barrier.h
5593@@ -89,7 +89,7 @@ static inline void fence(void)
5594 do { \
5595 compiletime_assert_atomic_type(*p); \
5596 smp_mb(); \
5597- ACCESS_ONCE(*p) = (v); \
5598+ ACCESS_ONCE_RW(*p) = (v); \
5599 } while (0)
5600
5601 #define smp_load_acquire(p) \
5602diff --git a/arch/metag/mm/hugetlbpage.c b/arch/metag/mm/hugetlbpage.c
5603index 3c52fa6..11b2ad8 100644
5604--- a/arch/metag/mm/hugetlbpage.c
5605+++ b/arch/metag/mm/hugetlbpage.c
5606@@ -200,6 +200,7 @@ hugetlb_get_unmapped_area_new_pmd(unsigned long len)
5607 info.high_limit = TASK_SIZE;
5608 info.align_mask = PAGE_MASK & HUGEPT_MASK;
5609 info.align_offset = 0;
5610+ info.threadstack_offset = 0;
5611 return vm_unmapped_area(&info);
5612 }
5613
5614diff --git a/arch/microblaze/include/asm/cache.h b/arch/microblaze/include/asm/cache.h
5615index 4efe96a..60e8699 100644
5616--- a/arch/microblaze/include/asm/cache.h
5617+++ b/arch/microblaze/include/asm/cache.h
5618@@ -13,11 +13,12 @@
5619 #ifndef _ASM_MICROBLAZE_CACHE_H
5620 #define _ASM_MICROBLAZE_CACHE_H
5621
5622+#include <linux/const.h>
5623 #include <asm/registers.h>
5624
5625 #define L1_CACHE_SHIFT 5
5626 /* word-granular cache in microblaze */
5627-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
5628+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
5629
5630 #define SMP_CACHE_BYTES L1_CACHE_BYTES
5631
5632diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
5633index 5cd695f..9a24ad0 100644
5634--- a/arch/mips/Kconfig
5635+++ b/arch/mips/Kconfig
5636@@ -2395,6 +2395,7 @@ source "kernel/Kconfig.preempt"
5637
5638 config KEXEC
5639 bool "Kexec system call"
5640+ depends on !GRKERNSEC_KMEM
5641 help
5642 kexec is a system call that implements the ability to shutdown your
5643 current kernel, and to start another kernel. It is like a reboot
5644diff --git a/arch/mips/cavium-octeon/dma-octeon.c b/arch/mips/cavium-octeon/dma-octeon.c
5645index 02f2444..506969c 100644
5646--- a/arch/mips/cavium-octeon/dma-octeon.c
5647+++ b/arch/mips/cavium-octeon/dma-octeon.c
5648@@ -199,7 +199,7 @@ static void octeon_dma_free_coherent(struct device *dev, size_t size,
5649 if (dma_release_from_coherent(dev, order, vaddr))
5650 return;
5651
5652- swiotlb_free_coherent(dev, size, vaddr, dma_handle);
5653+ swiotlb_free_coherent(dev, size, vaddr, dma_handle, attrs);
5654 }
5655
5656 static dma_addr_t octeon_unity_phys_to_dma(struct device *dev, phys_addr_t paddr)
5657diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h
5658index e8eb3d5..2e665d1 100644
5659--- a/arch/mips/include/asm/atomic.h
5660+++ b/arch/mips/include/asm/atomic.h
5661@@ -21,15 +21,39 @@
5662 #include <asm/cmpxchg.h>
5663 #include <asm/war.h>
5664
5665+#ifdef CONFIG_GENERIC_ATOMIC64
5666+#include <asm-generic/atomic64.h>
5667+#endif
5668+
5669 #define ATOMIC_INIT(i) { (i) }
5670
5671+#ifdef CONFIG_64BIT
5672+#define _ASM_EXTABLE(from, to) \
5673+" .section __ex_table,\"a\"\n" \
5674+" .dword " #from ", " #to"\n" \
5675+" .previous\n"
5676+#else
5677+#define _ASM_EXTABLE(from, to) \
5678+" .section __ex_table,\"a\"\n" \
5679+" .word " #from ", " #to"\n" \
5680+" .previous\n"
5681+#endif
5682+
5683 /*
5684 * atomic_read - read atomic variable
5685 * @v: pointer of type atomic_t
5686 *
5687 * Atomically reads the value of @v.
5688 */
5689-#define atomic_read(v) (*(volatile int *)&(v)->counter)
5690+static inline int atomic_read(const atomic_t *v)
5691+{
5692+ return (*(volatile const int *) &v->counter);
5693+}
5694+
5695+static inline int atomic_read_unchecked(const atomic_unchecked_t *v)
5696+{
5697+ return (*(volatile const int *) &v->counter);
5698+}
5699
5700 /*
5701 * atomic_set - set atomic variable
5702@@ -38,7 +62,15 @@
5703 *
5704 * Atomically sets the value of @v to @i.
5705 */
5706-#define atomic_set(v, i) ((v)->counter = (i))
5707+static inline void atomic_set(atomic_t *v, int i)
5708+{
5709+ v->counter = i;
5710+}
5711+
5712+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i)
5713+{
5714+ v->counter = i;
5715+}
5716
5717 /*
5718 * atomic_add - add integer to atomic variable
5719@@ -47,7 +79,67 @@
5720 *
5721 * Atomically adds @i to @v.
5722 */
5723-static __inline__ void atomic_add(int i, atomic_t * v)
5724+static __inline__ void atomic_add(int i, atomic_t *v)
5725+{
5726+ int temp;
5727+
5728+ if (kernel_uses_llsc && R10000_LLSC_WAR) {
5729+ __asm__ __volatile__(
5730+ " .set mips3 \n"
5731+ "1: ll %0, %1 # atomic_add \n"
5732+#ifdef CONFIG_PAX_REFCOUNT
5733+ /* Exception on overflow. */
5734+ "2: add %0, %2 \n"
5735+#else
5736+ " addu %0, %2 \n"
5737+#endif
5738+ " sc %0, %1 \n"
5739+ " beqzl %0, 1b \n"
5740+#ifdef CONFIG_PAX_REFCOUNT
5741+ "3: \n"
5742+ _ASM_EXTABLE(2b, 3b)
5743+#endif
5744+ " .set mips0 \n"
5745+ : "=&r" (temp), "+m" (v->counter)
5746+ : "Ir" (i));
5747+ } else if (kernel_uses_llsc) {
5748+ __asm__ __volatile__(
5749+ " .set mips3 \n"
5750+ "1: ll %0, %1 # atomic_add \n"
5751+#ifdef CONFIG_PAX_REFCOUNT
5752+ /* Exception on overflow. */
5753+ "2: add %0, %2 \n"
5754+#else
5755+ " addu %0, %2 \n"
5756+#endif
5757+ " sc %0, %1 \n"
5758+ " beqz %0, 1b \n"
5759+#ifdef CONFIG_PAX_REFCOUNT
5760+ "3: \n"
5761+ _ASM_EXTABLE(2b, 3b)
5762+#endif
5763+ " .set mips0 \n"
5764+ : "=&r" (temp), "+m" (v->counter)
5765+ : "Ir" (i));
5766+ } else {
5767+ unsigned long flags;
5768+
5769+ raw_local_irq_save(flags);
5770+ __asm__ __volatile__(
5771+#ifdef CONFIG_PAX_REFCOUNT
5772+ /* Exception on overflow. */
5773+ "1: add %0, %1 \n"
5774+ "2: \n"
5775+ _ASM_EXTABLE(1b, 2b)
5776+#else
5777+ " addu %0, %1 \n"
5778+#endif
5779+ : "+r" (v->counter) : "Ir" (i));
5780+ raw_local_irq_restore(flags);
5781+ }
5782+}
5783+
5784+static __inline__ void atomic_add_unchecked(int i, atomic_unchecked_t *v)
5785 {
5786 if (kernel_uses_llsc && R10000_LLSC_WAR) {
5787 int temp;
5788@@ -90,7 +182,67 @@ static __inline__ void atomic_add(int i, atomic_t * v)
5789 *
5790 * Atomically subtracts @i from @v.
5791 */
5792-static __inline__ void atomic_sub(int i, atomic_t * v)
5793+static __inline__ void atomic_sub(int i, atomic_t *v)
5794+{
5795+ int temp;
5796+
5797+ if (kernel_uses_llsc && R10000_LLSC_WAR) {
5798+ __asm__ __volatile__(
5799+ " .set mips3 \n"
5800+ "1: ll %0, %1 # atomic64_sub \n"
5801+#ifdef CONFIG_PAX_REFCOUNT
5802+ /* Exception on overflow. */
5803+ "2: sub %0, %2 \n"
5804+#else
5805+ " subu %0, %2 \n"
5806+#endif
5807+ " sc %0, %1 \n"
5808+ " beqzl %0, 1b \n"
5809+#ifdef CONFIG_PAX_REFCOUNT
5810+ "3: \n"
5811+ _ASM_EXTABLE(2b, 3b)
5812+#endif
5813+ " .set mips0 \n"
5814+ : "=&r" (temp), "+m" (v->counter)
5815+ : "Ir" (i));
5816+ } else if (kernel_uses_llsc) {
5817+ __asm__ __volatile__(
5818+ " .set mips3 \n"
5819+ "1: ll %0, %1 # atomic64_sub \n"
5820+#ifdef CONFIG_PAX_REFCOUNT
5821+ /* Exception on overflow. */
5822+ "2: sub %0, %2 \n"
5823+#else
5824+ " subu %0, %2 \n"
5825+#endif
5826+ " sc %0, %1 \n"
5827+ " beqz %0, 1b \n"
5828+#ifdef CONFIG_PAX_REFCOUNT
5829+ "3: \n"
5830+ _ASM_EXTABLE(2b, 3b)
5831+#endif
5832+ " .set mips0 \n"
5833+ : "=&r" (temp), "+m" (v->counter)
5834+ : "Ir" (i));
5835+ } else {
5836+ unsigned long flags;
5837+
5838+ raw_local_irq_save(flags);
5839+ __asm__ __volatile__(
5840+#ifdef CONFIG_PAX_REFCOUNT
5841+ /* Exception on overflow. */
5842+ "1: sub %0, %1 \n"
5843+ "2: \n"
5844+ _ASM_EXTABLE(1b, 2b)
5845+#else
5846+ " subu %0, %1 \n"
5847+#endif
5848+ : "+r" (v->counter) : "Ir" (i));
5849+ raw_local_irq_restore(flags);
5850+ }
5851+}
5852+
5853+static __inline__ void atomic_sub_unchecked(long i, atomic_unchecked_t *v)
5854 {
5855 if (kernel_uses_llsc && R10000_LLSC_WAR) {
5856 int temp;
5857@@ -129,7 +281,93 @@ static __inline__ void atomic_sub(int i, atomic_t * v)
5858 /*
5859 * Same as above, but return the result value
5860 */
5861-static __inline__ int atomic_add_return(int i, atomic_t * v)
5862+static __inline__ int atomic_add_return(int i, atomic_t *v)
5863+{
5864+ int result;
5865+ int temp;
5866+
5867+ smp_mb__before_llsc();
5868+
5869+ if (kernel_uses_llsc && R10000_LLSC_WAR) {
5870+ __asm__ __volatile__(
5871+ " .set mips3 \n"
5872+ "1: ll %1, %2 # atomic_add_return \n"
5873+#ifdef CONFIG_PAX_REFCOUNT
5874+ "2: add %0, %1, %3 \n"
5875+#else
5876+ " addu %0, %1, %3 \n"
5877+#endif
5878+ " sc %0, %2 \n"
5879+ " beqzl %0, 1b \n"
5880+#ifdef CONFIG_PAX_REFCOUNT
5881+ " b 4f \n"
5882+ " .set noreorder \n"
5883+ "3: b 5f \n"
5884+ " move %0, %1 \n"
5885+ " .set reorder \n"
5886+ _ASM_EXTABLE(2b, 3b)
5887+#endif
5888+ "4: addu %0, %1, %3 \n"
5889+#ifdef CONFIG_PAX_REFCOUNT
5890+ "5: \n"
5891+#endif
5892+ " .set mips0 \n"
5893+ : "=&r" (result), "=&r" (temp), "+m" (v->counter)
5894+ : "Ir" (i));
5895+ } else if (kernel_uses_llsc) {
5896+ __asm__ __volatile__(
5897+ " .set mips3 \n"
5898+ "1: ll %1, %2 # atomic_add_return \n"
5899+#ifdef CONFIG_PAX_REFCOUNT
5900+ "2: add %0, %1, %3 \n"
5901+#else
5902+ " addu %0, %1, %3 \n"
5903+#endif
5904+ " sc %0, %2 \n"
5905+ " bnez %0, 4f \n"
5906+ " b 1b \n"
5907+#ifdef CONFIG_PAX_REFCOUNT
5908+ " .set noreorder \n"
5909+ "3: b 5f \n"
5910+ " move %0, %1 \n"
5911+ " .set reorder \n"
5912+ _ASM_EXTABLE(2b, 3b)
5913+#endif
5914+ "4: addu %0, %1, %3 \n"
5915+#ifdef CONFIG_PAX_REFCOUNT
5916+ "5: \n"
5917+#endif
5918+ " .set mips0 \n"
5919+ : "=&r" (result), "=&r" (temp), "+m" (v->counter)
5920+ : "Ir" (i));
5921+ } else {
5922+ unsigned long flags;
5923+
5924+ raw_local_irq_save(flags);
5925+ __asm__ __volatile__(
5926+ " lw %0, %1 \n"
5927+#ifdef CONFIG_PAX_REFCOUNT
5928+ /* Exception on overflow. */
5929+ "1: add %0, %2 \n"
5930+#else
5931+ " addu %0, %2 \n"
5932+#endif
5933+ " sw %0, %1 \n"
5934+#ifdef CONFIG_PAX_REFCOUNT
5935+ /* Note: Dest reg is not modified on overflow */
5936+ "2: \n"
5937+ _ASM_EXTABLE(1b, 2b)
5938+#endif
5939+ : "=&r" (result), "+m" (v->counter) : "Ir" (i));
5940+ raw_local_irq_restore(flags);
5941+ }
5942+
5943+ smp_llsc_mb();
5944+
5945+ return result;
5946+}
5947+
5948+static __inline__ int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
5949 {
5950 int result;
5951
5952@@ -178,7 +416,93 @@ static __inline__ int atomic_add_return(int i, atomic_t * v)
5953 return result;
5954 }
5955
5956-static __inline__ int atomic_sub_return(int i, atomic_t * v)
5957+static __inline__ int atomic_sub_return(int i, atomic_t *v)
5958+{
5959+ int result;
5960+ int temp;
5961+
5962+ smp_mb__before_llsc();
5963+
5964+ if (kernel_uses_llsc && R10000_LLSC_WAR) {
5965+ __asm__ __volatile__(
5966+ " .set mips3 \n"
5967+ "1: ll %1, %2 # atomic_sub_return \n"
5968+#ifdef CONFIG_PAX_REFCOUNT
5969+ "2: sub %0, %1, %3 \n"
5970+#else
5971+ " subu %0, %1, %3 \n"
5972+#endif
5973+ " sc %0, %2 \n"
5974+ " beqzl %0, 1b \n"
5975+#ifdef CONFIG_PAX_REFCOUNT
5976+ " b 4f \n"
5977+ " .set noreorder \n"
5978+ "3: b 5f \n"
5979+ " move %0, %1 \n"
5980+ " .set reorder \n"
5981+ _ASM_EXTABLE(2b, 3b)
5982+#endif
5983+ "4: subu %0, %1, %3 \n"
5984+#ifdef CONFIG_PAX_REFCOUNT
5985+ "5: \n"
5986+#endif
5987+ " .set mips0 \n"
5988+ : "=&r" (result), "=&r" (temp), "=m" (v->counter)
5989+ : "Ir" (i), "m" (v->counter)
5990+ : "memory");
5991+ } else if (kernel_uses_llsc) {
5992+ __asm__ __volatile__(
5993+ " .set mips3 \n"
5994+ "1: ll %1, %2 # atomic_sub_return \n"
5995+#ifdef CONFIG_PAX_REFCOUNT
5996+ "2: sub %0, %1, %3 \n"
5997+#else
5998+ " subu %0, %1, %3 \n"
5999+#endif
6000+ " sc %0, %2 \n"
6001+ " bnez %0, 4f \n"
6002+ " b 1b \n"
6003+#ifdef CONFIG_PAX_REFCOUNT
6004+ " .set noreorder \n"
6005+ "3: b 5f \n"
6006+ " move %0, %1 \n"
6007+ " .set reorder \n"
6008+ _ASM_EXTABLE(2b, 3b)
6009+#endif
6010+ "4: subu %0, %1, %3 \n"
6011+#ifdef CONFIG_PAX_REFCOUNT
6012+ "5: \n"
6013+#endif
6014+ " .set mips0 \n"
6015+ : "=&r" (result), "=&r" (temp), "+m" (v->counter)
6016+ : "Ir" (i));
6017+ } else {
6018+ unsigned long flags;
6019+
6020+ raw_local_irq_save(flags);
6021+ __asm__ __volatile__(
6022+ " lw %0, %1 \n"
6023+#ifdef CONFIG_PAX_REFCOUNT
6024+ /* Exception on overflow. */
6025+ "1: sub %0, %2 \n"
6026+#else
6027+ " subu %0, %2 \n"
6028+#endif
6029+ " sw %0, %1 \n"
6030+#ifdef CONFIG_PAX_REFCOUNT
6031+ /* Note: Dest reg is not modified on overflow */
6032+ "2: \n"
6033+ _ASM_EXTABLE(1b, 2b)
6034+#endif
6035+ : "=&r" (result), "+m" (v->counter) : "Ir" (i));
6036+ raw_local_irq_restore(flags);
6037+ }
6038+
6039+ smp_llsc_mb();
6040+
6041+ return result;
6042+}
6043+static __inline__ int atomic_sub_return_unchecked(int i, atomic_unchecked_t *v)
6044 {
6045 int result;
6046
6047@@ -238,7 +562,7 @@ static __inline__ int atomic_sub_return(int i, atomic_t * v)
6048 * Atomically test @v and subtract @i if @v is greater or equal than @i.
6049 * The function returns the old value of @v minus @i.
6050 */
6051-static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
6052+static __inline__ int atomic_sub_if_positive(int i, atomic_t *v)
6053 {
6054 int result;
6055
6056@@ -295,8 +619,26 @@ static __inline__ int atomic_sub_if_positive(int i, atomic_t * v)
6057 return result;
6058 }
6059
6060-#define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n)))
6061-#define atomic_xchg(v, new) (xchg(&((v)->counter), (new)))
6062+static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
6063+{
6064+ return cmpxchg(&v->counter, old, new);
6065+}
6066+
6067+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old,
6068+ int new)
6069+{
6070+ return cmpxchg(&(v->counter), old, new);
6071+}
6072+
6073+static inline int atomic_xchg(atomic_t *v, int new)
6074+{
6075+ return xchg(&v->counter, new);
6076+}
6077+
6078+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new)
6079+{
6080+ return xchg(&(v->counter), new);
6081+}
6082
6083 /**
6084 * __atomic_add_unless - add unless the number is a given value
6085@@ -324,6 +666,10 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
6086
6087 #define atomic_dec_return(v) atomic_sub_return(1, (v))
6088 #define atomic_inc_return(v) atomic_add_return(1, (v))
6089+static __inline__ int atomic_inc_return_unchecked(atomic_unchecked_t *v)
6090+{
6091+ return atomic_add_return_unchecked(1, v);
6092+}
6093
6094 /*
6095 * atomic_sub_and_test - subtract value from variable and test result
6096@@ -345,6 +691,10 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
6097 * other cases.
6098 */
6099 #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0)
6100+static __inline__ int atomic_inc_and_test_unchecked(atomic_unchecked_t *v)
6101+{
6102+ return atomic_add_return_unchecked(1, v) == 0;
6103+}
6104
6105 /*
6106 * atomic_dec_and_test - decrement by 1 and test
6107@@ -369,6 +719,10 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
6108 * Atomically increments @v by 1.
6109 */
6110 #define atomic_inc(v) atomic_add(1, (v))
6111+static __inline__ void atomic_inc_unchecked(atomic_unchecked_t *v)
6112+{
6113+ atomic_add_unchecked(1, v);
6114+}
6115
6116 /*
6117 * atomic_dec - decrement and test
6118@@ -377,6 +731,10 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
6119 * Atomically decrements @v by 1.
6120 */
6121 #define atomic_dec(v) atomic_sub(1, (v))
6122+static __inline__ void atomic_dec_unchecked(atomic_unchecked_t *v)
6123+{
6124+ atomic_sub_unchecked(1, v);
6125+}
6126
6127 /*
6128 * atomic_add_negative - add and test if negative
6129@@ -398,14 +756,30 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
6130 * @v: pointer of type atomic64_t
6131 *
6132 */
6133-#define atomic64_read(v) (*(volatile long *)&(v)->counter)
6134+static inline long atomic64_read(const atomic64_t *v)
6135+{
6136+ return (*(volatile const long *) &v->counter);
6137+}
6138+
6139+static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v)
6140+{
6141+ return (*(volatile const long *) &v->counter);
6142+}
6143
6144 /*
6145 * atomic64_set - set atomic variable
6146 * @v: pointer of type atomic64_t
6147 * @i: required value
6148 */
6149-#define atomic64_set(v, i) ((v)->counter = (i))
6150+static inline void atomic64_set(atomic64_t *v, long i)
6151+{
6152+ v->counter = i;
6153+}
6154+
6155+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i)
6156+{
6157+ v->counter = i;
6158+}
6159
6160 /*
6161 * atomic64_add - add integer to atomic variable
6162@@ -414,7 +788,66 @@ static __inline__ int __atomic_add_unless(atomic_t *v, int a, int u)
6163 *
6164 * Atomically adds @i to @v.
6165 */
6166-static __inline__ void atomic64_add(long i, atomic64_t * v)
6167+static __inline__ void atomic64_add(long i, atomic64_t *v)
6168+{
6169+ long temp;
6170+
6171+ if (kernel_uses_llsc && R10000_LLSC_WAR) {
6172+ __asm__ __volatile__(
6173+ " .set mips3 \n"
6174+ "1: lld %0, %1 # atomic64_add \n"
6175+#ifdef CONFIG_PAX_REFCOUNT
6176+ /* Exception on overflow. */
6177+ "2: dadd %0, %2 \n"
6178+#else
6179+ " daddu %0, %2 \n"
6180+#endif
6181+ " scd %0, %1 \n"
6182+ " beqzl %0, 1b \n"
6183+#ifdef CONFIG_PAX_REFCOUNT
6184+ "3: \n"
6185+ _ASM_EXTABLE(2b, 3b)
6186+#endif
6187+ " .set mips0 \n"
6188+ : "=&r" (temp), "+m" (v->counter)
6189+ : "Ir" (i));
6190+ } else if (kernel_uses_llsc) {
6191+ __asm__ __volatile__(
6192+ " .set mips3 \n"
6193+ "1: lld %0, %1 # atomic64_add \n"
6194+#ifdef CONFIG_PAX_REFCOUNT
6195+ /* Exception on overflow. */
6196+ "2: dadd %0, %2 \n"
6197+#else
6198+ " daddu %0, %2 \n"
6199+#endif
6200+ " scd %0, %1 \n"
6201+ " beqz %0, 1b \n"
6202+#ifdef CONFIG_PAX_REFCOUNT
6203+ "3: \n"
6204+ _ASM_EXTABLE(2b, 3b)
6205+#endif
6206+ " .set mips0 \n"
6207+ : "=&r" (temp), "+m" (v->counter)
6208+ : "Ir" (i));
6209+ } else {
6210+ unsigned long flags;
6211+
6212+ raw_local_irq_save(flags);
6213+ __asm__ __volatile__(
6214+#ifdef CONFIG_PAX_REFCOUNT
6215+ /* Exception on overflow. */
6216+ "1: dadd %0, %1 \n"
6217+ "2: \n"
6218+ _ASM_EXTABLE(1b, 2b)
6219+#else
6220+ " daddu %0, %1 \n"
6221+#endif
6222+ : "+r" (v->counter) : "Ir" (i));
6223+ raw_local_irq_restore(flags);
6224+ }
6225+}
6226+static __inline__ void atomic64_add_unchecked(long i, atomic64_unchecked_t *v)
6227 {
6228 if (kernel_uses_llsc && R10000_LLSC_WAR) {
6229 long temp;
6230@@ -457,7 +890,67 @@ static __inline__ void atomic64_add(long i, atomic64_t * v)
6231 *
6232 * Atomically subtracts @i from @v.
6233 */
6234-static __inline__ void atomic64_sub(long i, atomic64_t * v)
6235+static __inline__ void atomic64_sub(long i, atomic64_t *v)
6236+{
6237+ long temp;
6238+
6239+ if (kernel_uses_llsc && R10000_LLSC_WAR) {
6240+ __asm__ __volatile__(
6241+ " .set mips3 \n"
6242+ "1: lld %0, %1 # atomic64_sub \n"
6243+#ifdef CONFIG_PAX_REFCOUNT
6244+ /* Exception on overflow. */
6245+ "2: dsub %0, %2 \n"
6246+#else
6247+ " dsubu %0, %2 \n"
6248+#endif
6249+ " scd %0, %1 \n"
6250+ " beqzl %0, 1b \n"
6251+#ifdef CONFIG_PAX_REFCOUNT
6252+ "3: \n"
6253+ _ASM_EXTABLE(2b, 3b)
6254+#endif
6255+ " .set mips0 \n"
6256+ : "=&r" (temp), "+m" (v->counter)
6257+ : "Ir" (i));
6258+ } else if (kernel_uses_llsc) {
6259+ __asm__ __volatile__(
6260+ " .set mips3 \n"
6261+ "1: lld %0, %1 # atomic64_sub \n"
6262+#ifdef CONFIG_PAX_REFCOUNT
6263+ /* Exception on overflow. */
6264+ "2: dsub %0, %2 \n"
6265+#else
6266+ " dsubu %0, %2 \n"
6267+#endif
6268+ " scd %0, %1 \n"
6269+ " beqz %0, 1b \n"
6270+#ifdef CONFIG_PAX_REFCOUNT
6271+ "3: \n"
6272+ _ASM_EXTABLE(2b, 3b)
6273+#endif
6274+ " .set mips0 \n"
6275+ : "=&r" (temp), "+m" (v->counter)
6276+ : "Ir" (i));
6277+ } else {
6278+ unsigned long flags;
6279+
6280+ raw_local_irq_save(flags);
6281+ __asm__ __volatile__(
6282+#ifdef CONFIG_PAX_REFCOUNT
6283+ /* Exception on overflow. */
6284+ "1: dsub %0, %1 \n"
6285+ "2: \n"
6286+ _ASM_EXTABLE(1b, 2b)
6287+#else
6288+ " dsubu %0, %1 \n"
6289+#endif
6290+ : "+r" (v->counter) : "Ir" (i));
6291+ raw_local_irq_restore(flags);
6292+ }
6293+}
6294+
6295+static __inline__ void atomic64_sub_unchecked(long i, atomic64_unchecked_t *v)
6296 {
6297 if (kernel_uses_llsc && R10000_LLSC_WAR) {
6298 long temp;
6299@@ -496,7 +989,93 @@ static __inline__ void atomic64_sub(long i, atomic64_t * v)
6300 /*
6301 * Same as above, but return the result value
6302 */
6303-static __inline__ long atomic64_add_return(long i, atomic64_t * v)
6304+static __inline__ long atomic64_add_return(long i, atomic64_t *v)
6305+{
6306+ long result;
6307+ long temp;
6308+
6309+ smp_mb__before_llsc();
6310+
6311+ if (kernel_uses_llsc && R10000_LLSC_WAR) {
6312+ __asm__ __volatile__(
6313+ " .set mips3 \n"
6314+ "1: lld %1, %2 # atomic64_add_return \n"
6315+#ifdef CONFIG_PAX_REFCOUNT
6316+ "2: dadd %0, %1, %3 \n"
6317+#else
6318+ " daddu %0, %1, %3 \n"
6319+#endif
6320+ " scd %0, %2 \n"
6321+ " beqzl %0, 1b \n"
6322+#ifdef CONFIG_PAX_REFCOUNT
6323+ " b 4f \n"
6324+ " .set noreorder \n"
6325+ "3: b 5f \n"
6326+ " move %0, %1 \n"
6327+ " .set reorder \n"
6328+ _ASM_EXTABLE(2b, 3b)
6329+#endif
6330+ "4: daddu %0, %1, %3 \n"
6331+#ifdef CONFIG_PAX_REFCOUNT
6332+ "5: \n"
6333+#endif
6334+ " .set mips0 \n"
6335+ : "=&r" (result), "=&r" (temp), "+m" (v->counter)
6336+ : "Ir" (i));
6337+ } else if (kernel_uses_llsc) {
6338+ __asm__ __volatile__(
6339+ " .set mips3 \n"
6340+ "1: lld %1, %2 # atomic64_add_return \n"
6341+#ifdef CONFIG_PAX_REFCOUNT
6342+ "2: dadd %0, %1, %3 \n"
6343+#else
6344+ " daddu %0, %1, %3 \n"
6345+#endif
6346+ " scd %0, %2 \n"
6347+ " bnez %0, 4f \n"
6348+ " b 1b \n"
6349+#ifdef CONFIG_PAX_REFCOUNT
6350+ " .set noreorder \n"
6351+ "3: b 5f \n"
6352+ " move %0, %1 \n"
6353+ " .set reorder \n"
6354+ _ASM_EXTABLE(2b, 3b)
6355+#endif
6356+ "4: daddu %0, %1, %3 \n"
6357+#ifdef CONFIG_PAX_REFCOUNT
6358+ "5: \n"
6359+#endif
6360+ " .set mips0 \n"
6361+ : "=&r" (result), "=&r" (temp), "=m" (v->counter)
6362+ : "Ir" (i), "m" (v->counter)
6363+ : "memory");
6364+ } else {
6365+ unsigned long flags;
6366+
6367+ raw_local_irq_save(flags);
6368+ __asm__ __volatile__(
6369+ " ld %0, %1 \n"
6370+#ifdef CONFIG_PAX_REFCOUNT
6371+ /* Exception on overflow. */
6372+ "1: dadd %0, %2 \n"
6373+#else
6374+ " daddu %0, %2 \n"
6375+#endif
6376+ " sd %0, %1 \n"
6377+#ifdef CONFIG_PAX_REFCOUNT
6378+ /* Note: Dest reg is not modified on overflow */
6379+ "2: \n"
6380+ _ASM_EXTABLE(1b, 2b)
6381+#endif
6382+ : "=&r" (result), "+m" (v->counter) : "Ir" (i));
6383+ raw_local_irq_restore(flags);
6384+ }
6385+
6386+ smp_llsc_mb();
6387+
6388+ return result;
6389+}
6390+static __inline__ long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v)
6391 {
6392 long result;
6393
6394@@ -546,7 +1125,97 @@ static __inline__ long atomic64_add_return(long i, atomic64_t * v)
6395 return result;
6396 }
6397
6398-static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
6399+static __inline__ long atomic64_sub_return(long i, atomic64_t *v)
6400+{
6401+ long result;
6402+ long temp;
6403+
6404+ smp_mb__before_llsc();
6405+
6406+ if (kernel_uses_llsc && R10000_LLSC_WAR) {
6407+ long temp;
6408+
6409+ __asm__ __volatile__(
6410+ " .set mips3 \n"
6411+ "1: lld %1, %2 # atomic64_sub_return \n"
6412+#ifdef CONFIG_PAX_REFCOUNT
6413+ "2: dsub %0, %1, %3 \n"
6414+#else
6415+ " dsubu %0, %1, %3 \n"
6416+#endif
6417+ " scd %0, %2 \n"
6418+ " beqzl %0, 1b \n"
6419+#ifdef CONFIG_PAX_REFCOUNT
6420+ " b 4f \n"
6421+ " .set noreorder \n"
6422+ "3: b 5f \n"
6423+ " move %0, %1 \n"
6424+ " .set reorder \n"
6425+ _ASM_EXTABLE(2b, 3b)
6426+#endif
6427+ "4: dsubu %0, %1, %3 \n"
6428+#ifdef CONFIG_PAX_REFCOUNT
6429+ "5: \n"
6430+#endif
6431+ " .set mips0 \n"
6432+ : "=&r" (result), "=&r" (temp), "=m" (v->counter)
6433+ : "Ir" (i), "m" (v->counter)
6434+ : "memory");
6435+ } else if (kernel_uses_llsc) {
6436+ __asm__ __volatile__(
6437+ " .set mips3 \n"
6438+ "1: lld %1, %2 # atomic64_sub_return \n"
6439+#ifdef CONFIG_PAX_REFCOUNT
6440+ "2: dsub %0, %1, %3 \n"
6441+#else
6442+ " dsubu %0, %1, %3 \n"
6443+#endif
6444+ " scd %0, %2 \n"
6445+ " bnez %0, 4f \n"
6446+ " b 1b \n"
6447+#ifdef CONFIG_PAX_REFCOUNT
6448+ " .set noreorder \n"
6449+ "3: b 5f \n"
6450+ " move %0, %1 \n"
6451+ " .set reorder \n"
6452+ _ASM_EXTABLE(2b, 3b)
6453+#endif
6454+ "4: dsubu %0, %1, %3 \n"
6455+#ifdef CONFIG_PAX_REFCOUNT
6456+ "5: \n"
6457+#endif
6458+ " .set mips0 \n"
6459+ : "=&r" (result), "=&r" (temp), "=m" (v->counter)
6460+ : "Ir" (i), "m" (v->counter)
6461+ : "memory");
6462+ } else {
6463+ unsigned long flags;
6464+
6465+ raw_local_irq_save(flags);
6466+ __asm__ __volatile__(
6467+ " ld %0, %1 \n"
6468+#ifdef CONFIG_PAX_REFCOUNT
6469+ /* Exception on overflow. */
6470+ "1: dsub %0, %2 \n"
6471+#else
6472+ " dsubu %0, %2 \n"
6473+#endif
6474+ " sd %0, %1 \n"
6475+#ifdef CONFIG_PAX_REFCOUNT
6476+ /* Note: Dest reg is not modified on overflow */
6477+ "2: \n"
6478+ _ASM_EXTABLE(1b, 2b)
6479+#endif
6480+ : "=&r" (result), "+m" (v->counter) : "Ir" (i));
6481+ raw_local_irq_restore(flags);
6482+ }
6483+
6484+ smp_llsc_mb();
6485+
6486+ return result;
6487+}
6488+
6489+static __inline__ long atomic64_sub_return_unchecked(long i, atomic64_unchecked_t *v)
6490 {
6491 long result;
6492
6493@@ -605,7 +1274,7 @@ static __inline__ long atomic64_sub_return(long i, atomic64_t * v)
6494 * Atomically test @v and subtract @i if @v is greater or equal than @i.
6495 * The function returns the old value of @v minus @i.
6496 */
6497-static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v)
6498+static __inline__ long atomic64_sub_if_positive(long i, atomic64_t *v)
6499 {
6500 long result;
6501
6502@@ -662,9 +1331,26 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v)
6503 return result;
6504 }
6505
6506-#define atomic64_cmpxchg(v, o, n) \
6507- ((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n)))
6508-#define atomic64_xchg(v, new) (xchg(&((v)->counter), (new)))
6509+static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new)
6510+{
6511+ return cmpxchg(&v->counter, old, new);
6512+}
6513+
6514+static inline long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long old,
6515+ long new)
6516+{
6517+ return cmpxchg(&(v->counter), old, new);
6518+}
6519+
6520+static inline long atomic64_xchg(atomic64_t *v, long new)
6521+{
6522+ return xchg(&v->counter, new);
6523+}
6524+
6525+static inline long atomic64_xchg_unchecked(atomic64_unchecked_t *v, long new)
6526+{
6527+ return xchg(&(v->counter), new);
6528+}
6529
6530 /**
6531 * atomic64_add_unless - add unless the number is a given value
6532@@ -694,6 +1380,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
6533
6534 #define atomic64_dec_return(v) atomic64_sub_return(1, (v))
6535 #define atomic64_inc_return(v) atomic64_add_return(1, (v))
6536+#define atomic64_inc_return_unchecked(v) atomic64_add_return_unchecked(1, (v))
6537
6538 /*
6539 * atomic64_sub_and_test - subtract value from variable and test result
6540@@ -715,6 +1402,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
6541 * other cases.
6542 */
6543 #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0)
6544+#define atomic64_inc_and_test_unchecked(v) atomic64_add_return_unchecked(1, (v)) == 0)
6545
6546 /*
6547 * atomic64_dec_and_test - decrement by 1 and test
6548@@ -739,6 +1427,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
6549 * Atomically increments @v by 1.
6550 */
6551 #define atomic64_inc(v) atomic64_add(1, (v))
6552+#define atomic64_inc_unchecked(v) atomic64_add_unchecked(1, (v))
6553
6554 /*
6555 * atomic64_dec - decrement and test
6556@@ -747,6 +1436,7 @@ static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
6557 * Atomically decrements @v by 1.
6558 */
6559 #define atomic64_dec(v) atomic64_sub(1, (v))
6560+#define atomic64_dec_unchecked(v) atomic64_sub_unchecked(1, (v))
6561
6562 /*
6563 * atomic64_add_negative - add and test if negative
6564diff --git a/arch/mips/include/asm/barrier.h b/arch/mips/include/asm/barrier.h
6565index e1aa4e4..670b68b 100644
6566--- a/arch/mips/include/asm/barrier.h
6567+++ b/arch/mips/include/asm/barrier.h
6568@@ -184,7 +184,7 @@
6569 do { \
6570 compiletime_assert_atomic_type(*p); \
6571 smp_mb(); \
6572- ACCESS_ONCE(*p) = (v); \
6573+ ACCESS_ONCE_RW(*p) = (v); \
6574 } while (0)
6575
6576 #define smp_load_acquire(p) \
6577diff --git a/arch/mips/include/asm/cache.h b/arch/mips/include/asm/cache.h
6578index b4db69f..8f3b093 100644
6579--- a/arch/mips/include/asm/cache.h
6580+++ b/arch/mips/include/asm/cache.h
6581@@ -9,10 +9,11 @@
6582 #ifndef _ASM_CACHE_H
6583 #define _ASM_CACHE_H
6584
6585+#include <linux/const.h>
6586 #include <kmalloc.h>
6587
6588 #define L1_CACHE_SHIFT CONFIG_MIPS_L1_CACHE_SHIFT
6589-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
6590+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
6591
6592 #define SMP_CACHE_SHIFT L1_CACHE_SHIFT
6593 #define SMP_CACHE_BYTES L1_CACHE_BYTES
6594diff --git a/arch/mips/include/asm/elf.h b/arch/mips/include/asm/elf.h
6595index d414405..6bb4ba2 100644
6596--- a/arch/mips/include/asm/elf.h
6597+++ b/arch/mips/include/asm/elf.h
6598@@ -398,13 +398,16 @@ extern const char *__elf_platform;
6599 #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
6600 #endif
6601
6602+#ifdef CONFIG_PAX_ASLR
6603+#define PAX_ELF_ET_DYN_BASE (TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL)
6604+
6605+#define PAX_DELTA_MMAP_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
6606+#define PAX_DELTA_STACK_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
6607+#endif
6608+
6609 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
6610 struct linux_binprm;
6611 extern int arch_setup_additional_pages(struct linux_binprm *bprm,
6612 int uses_interp);
6613
6614-struct mm_struct;
6615-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
6616-#define arch_randomize_brk arch_randomize_brk
6617-
6618 #endif /* _ASM_ELF_H */
6619diff --git a/arch/mips/include/asm/exec.h b/arch/mips/include/asm/exec.h
6620index c1f6afa..38cc6e9 100644
6621--- a/arch/mips/include/asm/exec.h
6622+++ b/arch/mips/include/asm/exec.h
6623@@ -12,6 +12,6 @@
6624 #ifndef _ASM_EXEC_H
6625 #define _ASM_EXEC_H
6626
6627-extern unsigned long arch_align_stack(unsigned long sp);
6628+#define arch_align_stack(x) ((x) & ~0xfUL)
6629
6630 #endif /* _ASM_EXEC_H */
6631diff --git a/arch/mips/include/asm/hw_irq.h b/arch/mips/include/asm/hw_irq.h
6632index 9e8ef59..1139d6b 100644
6633--- a/arch/mips/include/asm/hw_irq.h
6634+++ b/arch/mips/include/asm/hw_irq.h
6635@@ -10,7 +10,7 @@
6636
6637 #include <linux/atomic.h>
6638
6639-extern atomic_t irq_err_count;
6640+extern atomic_unchecked_t irq_err_count;
6641
6642 /*
6643 * interrupt-retrigger: NOP for now. This may not be appropriate for all
6644diff --git a/arch/mips/include/asm/local.h b/arch/mips/include/asm/local.h
6645index 46dfc3c..a16b13a 100644
6646--- a/arch/mips/include/asm/local.h
6647+++ b/arch/mips/include/asm/local.h
6648@@ -12,15 +12,25 @@ typedef struct
6649 atomic_long_t a;
6650 } local_t;
6651
6652+typedef struct {
6653+ atomic_long_unchecked_t a;
6654+} local_unchecked_t;
6655+
6656 #define LOCAL_INIT(i) { ATOMIC_LONG_INIT(i) }
6657
6658 #define local_read(l) atomic_long_read(&(l)->a)
6659+#define local_read_unchecked(l) atomic_long_read_unchecked(&(l)->a)
6660 #define local_set(l, i) atomic_long_set(&(l)->a, (i))
6661+#define local_set_unchecked(l, i) atomic_long_set_unchecked(&(l)->a, (i))
6662
6663 #define local_add(i, l) atomic_long_add((i), (&(l)->a))
6664+#define local_add_unchecked(i, l) atomic_long_add_unchecked((i), (&(l)->a))
6665 #define local_sub(i, l) atomic_long_sub((i), (&(l)->a))
6666+#define local_sub_unchecked(i, l) atomic_long_sub_unchecked((i), (&(l)->a))
6667 #define local_inc(l) atomic_long_inc(&(l)->a)
6668+#define local_inc_unchecked(l) atomic_long_inc_unchecked(&(l)->a)
6669 #define local_dec(l) atomic_long_dec(&(l)->a)
6670+#define local_dec_unchecked(l) atomic_long_dec_unchecked(&(l)->a)
6671
6672 /*
6673 * Same as above, but return the result value
6674@@ -70,6 +80,51 @@ static __inline__ long local_add_return(long i, local_t * l)
6675 return result;
6676 }
6677
6678+static __inline__ long local_add_return_unchecked(long i, local_unchecked_t * l)
6679+{
6680+ unsigned long result;
6681+
6682+ if (kernel_uses_llsc && R10000_LLSC_WAR) {
6683+ unsigned long temp;
6684+
6685+ __asm__ __volatile__(
6686+ " .set mips3 \n"
6687+ "1:" __LL "%1, %2 # local_add_return \n"
6688+ " addu %0, %1, %3 \n"
6689+ __SC "%0, %2 \n"
6690+ " beqzl %0, 1b \n"
6691+ " addu %0, %1, %3 \n"
6692+ " .set mips0 \n"
6693+ : "=&r" (result), "=&r" (temp), "=m" (l->a.counter)
6694+ : "Ir" (i), "m" (l->a.counter)
6695+ : "memory");
6696+ } else if (kernel_uses_llsc) {
6697+ unsigned long temp;
6698+
6699+ __asm__ __volatile__(
6700+ " .set mips3 \n"
6701+ "1:" __LL "%1, %2 # local_add_return \n"
6702+ " addu %0, %1, %3 \n"
6703+ __SC "%0, %2 \n"
6704+ " beqz %0, 1b \n"
6705+ " addu %0, %1, %3 \n"
6706+ " .set mips0 \n"
6707+ : "=&r" (result), "=&r" (temp), "=m" (l->a.counter)
6708+ : "Ir" (i), "m" (l->a.counter)
6709+ : "memory");
6710+ } else {
6711+ unsigned long flags;
6712+
6713+ local_irq_save(flags);
6714+ result = l->a.counter;
6715+ result += i;
6716+ l->a.counter = result;
6717+ local_irq_restore(flags);
6718+ }
6719+
6720+ return result;
6721+}
6722+
6723 static __inline__ long local_sub_return(long i, local_t * l)
6724 {
6725 unsigned long result;
6726@@ -117,6 +172,8 @@ static __inline__ long local_sub_return(long i, local_t * l)
6727
6728 #define local_cmpxchg(l, o, n) \
6729 ((long)cmpxchg_local(&((l)->a.counter), (o), (n)))
6730+#define local_cmpxchg_unchecked(l, o, n) \
6731+ ((long)cmpxchg_local(&((l)->a.counter), (o), (n)))
6732 #define local_xchg(l, n) (atomic_long_xchg((&(l)->a), (n)))
6733
6734 /**
6735diff --git a/arch/mips/include/asm/page.h b/arch/mips/include/asm/page.h
6736index 5699ec3..95def83 100644
6737--- a/arch/mips/include/asm/page.h
6738+++ b/arch/mips/include/asm/page.h
6739@@ -120,7 +120,7 @@ extern void copy_user_highpage(struct page *to, struct page *from,
6740 #ifdef CONFIG_CPU_MIPS32
6741 typedef struct { unsigned long pte_low, pte_high; } pte_t;
6742 #define pte_val(x) ((x).pte_low | ((unsigned long long)(x).pte_high << 32))
6743- #define __pte(x) ({ pte_t __pte = {(x), ((unsigned long long)(x)) >> 32}; __pte; })
6744+ #define __pte(x) ({ pte_t __pte = {(x), (x) >> 32}; __pte; })
6745 #else
6746 typedef struct { unsigned long long pte; } pte_t;
6747 #define pte_val(x) ((x).pte)
6748diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h
6749index b336037..5b874cc 100644
6750--- a/arch/mips/include/asm/pgalloc.h
6751+++ b/arch/mips/include/asm/pgalloc.h
6752@@ -37,6 +37,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
6753 {
6754 set_pud(pud, __pud((unsigned long)pmd));
6755 }
6756+
6757+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
6758+{
6759+ pud_populate(mm, pud, pmd);
6760+}
6761 #endif
6762
6763 /*
6764diff --git a/arch/mips/include/asm/pgtable.h b/arch/mips/include/asm/pgtable.h
6765index 008324d..f67c239 100644
6766--- a/arch/mips/include/asm/pgtable.h
6767+++ b/arch/mips/include/asm/pgtable.h
6768@@ -20,6 +20,9 @@
6769 #include <asm/io.h>
6770 #include <asm/pgtable-bits.h>
6771
6772+#define ktla_ktva(addr) (addr)
6773+#define ktva_ktla(addr) (addr)
6774+
6775 struct mm_struct;
6776 struct vm_area_struct;
6777
6778diff --git a/arch/mips/include/asm/smtc_proc.h b/arch/mips/include/asm/smtc_proc.h
6779index 25da651..ae2a259 100644
6780--- a/arch/mips/include/asm/smtc_proc.h
6781+++ b/arch/mips/include/asm/smtc_proc.h
6782@@ -18,6 +18,6 @@ extern struct smtc_cpu_proc smtc_cpu_stats[NR_CPUS];
6783
6784 /* Count of number of recoveries of "stolen" FPU access rights on 34K */
6785
6786-extern atomic_t smtc_fpu_recoveries;
6787+extern atomic_unchecked_t smtc_fpu_recoveries;
6788
6789 #endif /* __ASM_SMTC_PROC_H */
6790diff --git a/arch/mips/include/asm/thread_info.h b/arch/mips/include/asm/thread_info.h
6791index d2d961d..a674df0 100644
6792--- a/arch/mips/include/asm/thread_info.h
6793+++ b/arch/mips/include/asm/thread_info.h
6794@@ -105,6 +105,9 @@ static inline struct thread_info *current_thread_info(void)
6795 #define TIF_SECCOMP 4 /* secure computing */
6796 #define TIF_NOTIFY_RESUME 5 /* callback before returning to user */
6797 #define TIF_RESTORE_SIGMASK 9 /* restore signal mask in do_signal() */
6798+/* li takes a 32bit immediate */
6799+#define TIF_GRSEC_SETXID 10 /* update credentials on syscall entry/exit */
6800+
6801 #define TIF_USEDFPU 16 /* FPU was used by this task this quantum (SMP) */
6802 #define TIF_MEMDIE 18 /* is terminating due to OOM killer */
6803 #define TIF_NOHZ 19 /* in adaptive nohz mode */
6804@@ -138,14 +141,16 @@ static inline struct thread_info *current_thread_info(void)
6805 #define _TIF_USEDMSA (1<<TIF_USEDMSA)
6806 #define _TIF_MSA_CTX_LIVE (1<<TIF_MSA_CTX_LIVE)
6807 #define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT)
6808+#define _TIF_GRSEC_SETXID (1<<TIF_GRSEC_SETXID)
6809
6810 #define _TIF_WORK_SYSCALL_ENTRY (_TIF_NOHZ | _TIF_SYSCALL_TRACE | \
6811 _TIF_SYSCALL_AUDIT | \
6812- _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP)
6813+ _TIF_SYSCALL_TRACEPOINT | _TIF_SECCOMP | \
6814+ _TIF_GRSEC_SETXID)
6815
6816 /* work to do in syscall_trace_leave() */
6817 #define _TIF_WORK_SYSCALL_EXIT (_TIF_NOHZ | _TIF_SYSCALL_TRACE | \
6818- _TIF_SYSCALL_AUDIT | _TIF_SYSCALL_TRACEPOINT)
6819+ _TIF_SYSCALL_AUDIT | _TIF_SYSCALL_TRACEPOINT | _TIF_GRSEC_SETXID)
6820
6821 /* work to do on interrupt/exception return */
6822 #define _TIF_WORK_MASK \
6823@@ -153,7 +158,7 @@ static inline struct thread_info *current_thread_info(void)
6824 /* work to do on any return to u-space */
6825 #define _TIF_ALLWORK_MASK (_TIF_NOHZ | _TIF_WORK_MASK | \
6826 _TIF_WORK_SYSCALL_EXIT | \
6827- _TIF_SYSCALL_TRACEPOINT)
6828+ _TIF_SYSCALL_TRACEPOINT | _TIF_GRSEC_SETXID)
6829
6830 /*
6831 * We stash processor id into a COP0 register to retrieve it fast
6832diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h
6833index a109510..94ee3f6 100644
6834--- a/arch/mips/include/asm/uaccess.h
6835+++ b/arch/mips/include/asm/uaccess.h
6836@@ -130,6 +130,7 @@ extern u64 __ua_limit;
6837 __ok == 0; \
6838 })
6839
6840+#define access_ok_noprefault(type, addr, size) access_ok((type), (addr), (size))
6841 #define access_ok(type, addr, size) \
6842 likely(__access_ok((addr), (size), __access_mask))
6843
6844diff --git a/arch/mips/kernel/binfmt_elfn32.c b/arch/mips/kernel/binfmt_elfn32.c
6845index 1188e00..41cf144 100644
6846--- a/arch/mips/kernel/binfmt_elfn32.c
6847+++ b/arch/mips/kernel/binfmt_elfn32.c
6848@@ -50,6 +50,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
6849 #undef ELF_ET_DYN_BASE
6850 #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2)
6851
6852+#ifdef CONFIG_PAX_ASLR
6853+#define PAX_ELF_ET_DYN_BASE (TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL)
6854+
6855+#define PAX_DELTA_MMAP_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
6856+#define PAX_DELTA_STACK_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
6857+#endif
6858+
6859 #include <asm/processor.h>
6860 #include <linux/module.h>
6861 #include <linux/elfcore.h>
6862diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c
6863index 7faf5f2..f3d3cf4 100644
6864--- a/arch/mips/kernel/binfmt_elfo32.c
6865+++ b/arch/mips/kernel/binfmt_elfo32.c
6866@@ -70,6 +70,13 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
6867 #undef ELF_ET_DYN_BASE
6868 #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2)
6869
6870+#ifdef CONFIG_PAX_ASLR
6871+#define PAX_ELF_ET_DYN_BASE (TASK_IS_32BIT_ADDR ? 0x00400000UL : 0x00400000UL)
6872+
6873+#define PAX_DELTA_MMAP_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
6874+#define PAX_DELTA_STACK_LEN (TASK_IS_32BIT_ADDR ? 27-PAGE_SHIFT : 36-PAGE_SHIFT)
6875+#endif
6876+
6877 #include <asm/processor.h>
6878
6879 /*
6880diff --git a/arch/mips/kernel/i8259.c b/arch/mips/kernel/i8259.c
6881index 2b91fe8..fe4f6b4 100644
6882--- a/arch/mips/kernel/i8259.c
6883+++ b/arch/mips/kernel/i8259.c
6884@@ -205,7 +205,7 @@ spurious_8259A_irq:
6885 printk(KERN_DEBUG "spurious 8259A interrupt: IRQ%d.\n", irq);
6886 spurious_irq_mask |= irqmask;
6887 }
6888- atomic_inc(&irq_err_count);
6889+ atomic_inc_unchecked(&irq_err_count);
6890 /*
6891 * Theoretically we do not have to handle this IRQ,
6892 * but in Linux this does not cause problems and is
6893diff --git a/arch/mips/kernel/irq-gt641xx.c b/arch/mips/kernel/irq-gt641xx.c
6894index 44a1f79..2bd6aa3 100644
6895--- a/arch/mips/kernel/irq-gt641xx.c
6896+++ b/arch/mips/kernel/irq-gt641xx.c
6897@@ -110,7 +110,7 @@ void gt641xx_irq_dispatch(void)
6898 }
6899 }
6900
6901- atomic_inc(&irq_err_count);
6902+ atomic_inc_unchecked(&irq_err_count);
6903 }
6904
6905 void __init gt641xx_irq_init(void)
6906diff --git a/arch/mips/kernel/irq.c b/arch/mips/kernel/irq.c
6907index d1fea7a..2e591b0 100644
6908--- a/arch/mips/kernel/irq.c
6909+++ b/arch/mips/kernel/irq.c
6910@@ -77,17 +77,17 @@ void ack_bad_irq(unsigned int irq)
6911 printk("unexpected IRQ # %d\n", irq);
6912 }
6913
6914-atomic_t irq_err_count;
6915+atomic_unchecked_t irq_err_count;
6916
6917 int arch_show_interrupts(struct seq_file *p, int prec)
6918 {
6919- seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
6920+ seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read_unchecked(&irq_err_count));
6921 return 0;
6922 }
6923
6924 asmlinkage void spurious_interrupt(void)
6925 {
6926- atomic_inc(&irq_err_count);
6927+ atomic_inc_unchecked(&irq_err_count);
6928 }
6929
6930 void __init init_IRQ(void)
6931@@ -110,7 +110,10 @@ void __init init_IRQ(void)
6932 #endif
6933 }
6934
6935+
6936 #ifdef DEBUG_STACKOVERFLOW
6937+extern void gr_handle_kernel_exploit(void);
6938+
6939 static inline void check_stack_overflow(void)
6940 {
6941 unsigned long sp;
6942@@ -126,6 +129,7 @@ static inline void check_stack_overflow(void)
6943 printk("do_IRQ: stack overflow: %ld\n",
6944 sp - sizeof(struct thread_info));
6945 dump_stack();
6946+ gr_handle_kernel_exploit();
6947 }
6948 }
6949 #else
6950diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
6951index 60e39dc..b4829bf 100644
6952--- a/arch/mips/kernel/process.c
6953+++ b/arch/mips/kernel/process.c
6954@@ -579,15 +579,3 @@ unsigned long get_wchan(struct task_struct *task)
6955 out:
6956 return pc;
6957 }
6958-
6959-/*
6960- * Don't forget that the stack pointer must be aligned on a 8 bytes
6961- * boundary for 32-bits ABI and 16 bytes for 64-bits ABI.
6962- */
6963-unsigned long arch_align_stack(unsigned long sp)
6964-{
6965- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
6966- sp -= get_random_int() & ~PAGE_MASK;
6967-
6968- return sp & ALMASK;
6969-}
6970diff --git a/arch/mips/kernel/ptrace.c b/arch/mips/kernel/ptrace.c
6971index f639ccd..e4b110d 100644
6972--- a/arch/mips/kernel/ptrace.c
6973+++ b/arch/mips/kernel/ptrace.c
6974@@ -630,6 +630,10 @@ long arch_ptrace(struct task_struct *child, long request,
6975 return ret;
6976 }
6977
6978+#ifdef CONFIG_GRKERNSEC_SETXID
6979+extern void gr_delayed_cred_worker(void);
6980+#endif
6981+
6982 /*
6983 * Notification of system call entry/exit
6984 * - triggered by current->work.syscall_trace
6985@@ -646,6 +650,11 @@ asmlinkage long syscall_trace_enter(struct pt_regs *regs, long syscall)
6986 tracehook_report_syscall_entry(regs))
6987 ret = -1;
6988
6989+#ifdef CONFIG_GRKERNSEC_SETXID
6990+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
6991+ gr_delayed_cred_worker();
6992+#endif
6993+
6994 if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
6995 trace_sys_enter(regs, regs->regs[2]);
6996
6997diff --git a/arch/mips/kernel/reset.c b/arch/mips/kernel/reset.c
6998index 07fc524..b9d7f28 100644
6999--- a/arch/mips/kernel/reset.c
7000+++ b/arch/mips/kernel/reset.c
7001@@ -13,6 +13,7 @@
7002 #include <linux/reboot.h>
7003
7004 #include <asm/reboot.h>
7005+#include <asm/bug.h>
7006
7007 /*
7008 * Urgs ... Too many MIPS machines to handle this in a generic way.
7009@@ -29,16 +30,19 @@ void machine_restart(char *command)
7010 {
7011 if (_machine_restart)
7012 _machine_restart(command);
7013+ BUG();
7014 }
7015
7016 void machine_halt(void)
7017 {
7018 if (_machine_halt)
7019 _machine_halt();
7020+ BUG();
7021 }
7022
7023 void machine_power_off(void)
7024 {
7025 if (pm_power_off)
7026 pm_power_off();
7027+ BUG();
7028 }
7029diff --git a/arch/mips/kernel/smtc-proc.c b/arch/mips/kernel/smtc-proc.c
7030index 38635a9..3fcd5e0 100644
7031--- a/arch/mips/kernel/smtc-proc.c
7032+++ b/arch/mips/kernel/smtc-proc.c
7033@@ -31,7 +31,7 @@ unsigned long selfipis[NR_CPUS];
7034
7035 struct smtc_cpu_proc smtc_cpu_stats[NR_CPUS];
7036
7037-atomic_t smtc_fpu_recoveries;
7038+atomic_unchecked_t smtc_fpu_recoveries;
7039
7040 static int smtc_proc_show(struct seq_file *m, void *v)
7041 {
7042@@ -48,7 +48,7 @@ static int smtc_proc_show(struct seq_file *m, void *v)
7043 for(i = 0; i < NR_CPUS; i++)
7044 seq_printf(m, "%d: %ld\n", i, smtc_cpu_stats[i].selfipis);
7045 seq_printf(m, "%d Recoveries of \"stolen\" FPU\n",
7046- atomic_read(&smtc_fpu_recoveries));
7047+ atomic_read_unchecked(&smtc_fpu_recoveries));
7048 return 0;
7049 }
7050
7051@@ -73,7 +73,7 @@ void init_smtc_stats(void)
7052 smtc_cpu_stats[i].selfipis = 0;
7053 }
7054
7055- atomic_set(&smtc_fpu_recoveries, 0);
7056+ atomic_set_unchecked(&smtc_fpu_recoveries, 0);
7057
7058 proc_create("smtc", 0444, NULL, &smtc_proc_fops);
7059 }
7060diff --git a/arch/mips/kernel/smtc.c b/arch/mips/kernel/smtc.c
7061index c1681d6..9f881d1 100644
7062--- a/arch/mips/kernel/smtc.c
7063+++ b/arch/mips/kernel/smtc.c
7064@@ -1359,7 +1359,7 @@ void smtc_soft_dump(void)
7065 }
7066 smtc_ipi_qdump();
7067 printk("%d Recoveries of \"stolen\" FPU\n",
7068- atomic_read(&smtc_fpu_recoveries));
7069+ atomic_read_unchecked(&smtc_fpu_recoveries));
7070 }
7071
7072
7073diff --git a/arch/mips/kernel/sync-r4k.c b/arch/mips/kernel/sync-r4k.c
7074index c24ad5f..9983ab2 100644
7075--- a/arch/mips/kernel/sync-r4k.c
7076+++ b/arch/mips/kernel/sync-r4k.c
7077@@ -20,8 +20,8 @@
7078 #include <asm/mipsregs.h>
7079
7080 static atomic_t count_start_flag = ATOMIC_INIT(0);
7081-static atomic_t count_count_start = ATOMIC_INIT(0);
7082-static atomic_t count_count_stop = ATOMIC_INIT(0);
7083+static atomic_unchecked_t count_count_start = ATOMIC_INIT(0);
7084+static atomic_unchecked_t count_count_stop = ATOMIC_INIT(0);
7085 static atomic_t count_reference = ATOMIC_INIT(0);
7086
7087 #define COUNTON 100
7088@@ -68,13 +68,13 @@ void synchronise_count_master(int cpu)
7089
7090 for (i = 0; i < NR_LOOPS; i++) {
7091 /* slaves loop on '!= 2' */
7092- while (atomic_read(&count_count_start) != 1)
7093+ while (atomic_read_unchecked(&count_count_start) != 1)
7094 mb();
7095- atomic_set(&count_count_stop, 0);
7096+ atomic_set_unchecked(&count_count_stop, 0);
7097 smp_wmb();
7098
7099 /* this lets the slaves write their count register */
7100- atomic_inc(&count_count_start);
7101+ atomic_inc_unchecked(&count_count_start);
7102
7103 /*
7104 * Everyone initialises count in the last loop:
7105@@ -85,11 +85,11 @@ void synchronise_count_master(int cpu)
7106 /*
7107 * Wait for all slaves to leave the synchronization point:
7108 */
7109- while (atomic_read(&count_count_stop) != 1)
7110+ while (atomic_read_unchecked(&count_count_stop) != 1)
7111 mb();
7112- atomic_set(&count_count_start, 0);
7113+ atomic_set_unchecked(&count_count_start, 0);
7114 smp_wmb();
7115- atomic_inc(&count_count_stop);
7116+ atomic_inc_unchecked(&count_count_stop);
7117 }
7118 /* Arrange for an interrupt in a short while */
7119 write_c0_compare(read_c0_count() + COUNTON);
7120@@ -130,8 +130,8 @@ void synchronise_count_slave(int cpu)
7121 initcount = atomic_read(&count_reference);
7122
7123 for (i = 0; i < NR_LOOPS; i++) {
7124- atomic_inc(&count_count_start);
7125- while (atomic_read(&count_count_start) != 2)
7126+ atomic_inc_unchecked(&count_count_start);
7127+ while (atomic_read_unchecked(&count_count_start) != 2)
7128 mb();
7129
7130 /*
7131@@ -140,8 +140,8 @@ void synchronise_count_slave(int cpu)
7132 if (i == NR_LOOPS-1)
7133 write_c0_count(initcount);
7134
7135- atomic_inc(&count_count_stop);
7136- while (atomic_read(&count_count_stop) != 2)
7137+ atomic_inc_unchecked(&count_count_stop);
7138+ while (atomic_read_unchecked(&count_count_stop) != 2)
7139 mb();
7140 }
7141 /* Arrange for an interrupt in a short while */
7142diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
7143index 8119ac2..b229939 100644
7144--- a/arch/mips/kernel/traps.c
7145+++ b/arch/mips/kernel/traps.c
7146@@ -695,7 +695,18 @@ asmlinkage void do_ov(struct pt_regs *regs)
7147 siginfo_t info;
7148
7149 prev_state = exception_enter();
7150- die_if_kernel("Integer overflow", regs);
7151+ if (unlikely(!user_mode(regs))) {
7152+
7153+#ifdef CONFIG_PAX_REFCOUNT
7154+ if (fixup_exception(regs)) {
7155+ pax_report_refcount_overflow(regs);
7156+ exception_exit(prev_state);
7157+ return;
7158+ }
7159+#endif
7160+
7161+ die("Integer overflow", regs);
7162+ }
7163
7164 info.si_code = FPE_INTOVF;
7165 info.si_signo = SIGFPE;
7166diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
7167index becc42b..9e43d4b 100644
7168--- a/arch/mips/mm/fault.c
7169+++ b/arch/mips/mm/fault.c
7170@@ -28,6 +28,23 @@
7171 #include <asm/highmem.h> /* For VMALLOC_END */
7172 #include <linux/kdebug.h>
7173
7174+#ifdef CONFIG_PAX_PAGEEXEC
7175+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
7176+{
7177+ unsigned long i;
7178+
7179+ printk(KERN_ERR "PAX: bytes at PC: ");
7180+ for (i = 0; i < 5; i++) {
7181+ unsigned int c;
7182+ if (get_user(c, (unsigned int *)pc+i))
7183+ printk(KERN_CONT "???????? ");
7184+ else
7185+ printk(KERN_CONT "%08x ", c);
7186+ }
7187+ printk("\n");
7188+}
7189+#endif
7190+
7191 /*
7192 * This routine handles page faults. It determines the address,
7193 * and the problem, and then passes it off to one of the appropriate
7194@@ -199,6 +216,14 @@ bad_area:
7195 bad_area_nosemaphore:
7196 /* User mode accesses just cause a SIGSEGV */
7197 if (user_mode(regs)) {
7198+
7199+#ifdef CONFIG_PAX_PAGEEXEC
7200+ if (cpu_has_rixi && (mm->pax_flags & MF_PAX_PAGEEXEC) && !write && address == instruction_pointer(regs)) {
7201+ pax_report_fault(regs, (void *)address, (void *)user_stack_pointer(regs));
7202+ do_group_exit(SIGKILL);
7203+ }
7204+#endif
7205+
7206 tsk->thread.cp0_badvaddr = address;
7207 tsk->thread.error_code = write;
7208 #if 0
7209diff --git a/arch/mips/mm/mmap.c b/arch/mips/mm/mmap.c
7210index f1baadd..5472dca 100644
7211--- a/arch/mips/mm/mmap.c
7212+++ b/arch/mips/mm/mmap.c
7213@@ -59,6 +59,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
7214 struct vm_area_struct *vma;
7215 unsigned long addr = addr0;
7216 int do_color_align;
7217+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
7218 struct vm_unmapped_area_info info;
7219
7220 if (unlikely(len > TASK_SIZE))
7221@@ -84,6 +85,11 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
7222 do_color_align = 1;
7223
7224 /* requesting a specific address */
7225+
7226+#ifdef CONFIG_PAX_RANDMMAP
7227+ if (!(current->mm->pax_flags & MF_PAX_RANDMMAP))
7228+#endif
7229+
7230 if (addr) {
7231 if (do_color_align)
7232 addr = COLOUR_ALIGN(addr, pgoff);
7233@@ -91,14 +97,14 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
7234 addr = PAGE_ALIGN(addr);
7235
7236 vma = find_vma(mm, addr);
7237- if (TASK_SIZE - len >= addr &&
7238- (!vma || addr + len <= vma->vm_start))
7239+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
7240 return addr;
7241 }
7242
7243 info.length = len;
7244 info.align_mask = do_color_align ? (PAGE_MASK & shm_align_mask) : 0;
7245 info.align_offset = pgoff << PAGE_SHIFT;
7246+ info.threadstack_offset = offset;
7247
7248 if (dir == DOWN) {
7249 info.flags = VM_UNMAPPED_AREA_TOPDOWN;
7250@@ -146,6 +152,10 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
7251 {
7252 unsigned long random_factor = 0UL;
7253
7254+#ifdef CONFIG_PAX_RANDMMAP
7255+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
7256+#endif
7257+
7258 if (current->flags & PF_RANDOMIZE) {
7259 random_factor = get_random_int();
7260 random_factor = random_factor << PAGE_SHIFT;
7261@@ -157,40 +167,25 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
7262
7263 if (mmap_is_legacy()) {
7264 mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
7265+
7266+#ifdef CONFIG_PAX_RANDMMAP
7267+ if (mm->pax_flags & MF_PAX_RANDMMAP)
7268+ mm->mmap_base += mm->delta_mmap;
7269+#endif
7270+
7271 mm->get_unmapped_area = arch_get_unmapped_area;
7272 } else {
7273 mm->mmap_base = mmap_base(random_factor);
7274+
7275+#ifdef CONFIG_PAX_RANDMMAP
7276+ if (mm->pax_flags & MF_PAX_RANDMMAP)
7277+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
7278+#endif
7279+
7280 mm->get_unmapped_area = arch_get_unmapped_area_topdown;
7281 }
7282 }
7283
7284-static inline unsigned long brk_rnd(void)
7285-{
7286- unsigned long rnd = get_random_int();
7287-
7288- rnd = rnd << PAGE_SHIFT;
7289- /* 8MB for 32bit, 256MB for 64bit */
7290- if (TASK_IS_32BIT_ADDR)
7291- rnd = rnd & 0x7ffffful;
7292- else
7293- rnd = rnd & 0xffffffful;
7294-
7295- return rnd;
7296-}
7297-
7298-unsigned long arch_randomize_brk(struct mm_struct *mm)
7299-{
7300- unsigned long base = mm->brk;
7301- unsigned long ret;
7302-
7303- ret = PAGE_ALIGN(base + brk_rnd());
7304-
7305- if (ret < mm->brk)
7306- return mm->brk;
7307-
7308- return ret;
7309-}
7310-
7311 int __virt_addr_valid(const volatile void *kaddr)
7312 {
7313 return pfn_valid(PFN_DOWN(virt_to_phys(kaddr)));
7314diff --git a/arch/mips/pci/pci-octeon.c b/arch/mips/pci/pci-octeon.c
7315index 59cccd9..f39ac2f 100644
7316--- a/arch/mips/pci/pci-octeon.c
7317+++ b/arch/mips/pci/pci-octeon.c
7318@@ -327,8 +327,8 @@ static int octeon_write_config(struct pci_bus *bus, unsigned int devfn,
7319
7320
7321 static struct pci_ops octeon_pci_ops = {
7322- octeon_read_config,
7323- octeon_write_config,
7324+ .read = octeon_read_config,
7325+ .write = octeon_write_config,
7326 };
7327
7328 static struct resource octeon_pci_mem_resource = {
7329diff --git a/arch/mips/pci/pcie-octeon.c b/arch/mips/pci/pcie-octeon.c
7330index 5e36c33..eb4a17b 100644
7331--- a/arch/mips/pci/pcie-octeon.c
7332+++ b/arch/mips/pci/pcie-octeon.c
7333@@ -1792,8 +1792,8 @@ static int octeon_dummy_write_config(struct pci_bus *bus, unsigned int devfn,
7334 }
7335
7336 static struct pci_ops octeon_pcie0_ops = {
7337- octeon_pcie0_read_config,
7338- octeon_pcie0_write_config,
7339+ .read = octeon_pcie0_read_config,
7340+ .write = octeon_pcie0_write_config,
7341 };
7342
7343 static struct resource octeon_pcie0_mem_resource = {
7344@@ -1813,8 +1813,8 @@ static struct pci_controller octeon_pcie0_controller = {
7345 };
7346
7347 static struct pci_ops octeon_pcie1_ops = {
7348- octeon_pcie1_read_config,
7349- octeon_pcie1_write_config,
7350+ .read = octeon_pcie1_read_config,
7351+ .write = octeon_pcie1_write_config,
7352 };
7353
7354 static struct resource octeon_pcie1_mem_resource = {
7355@@ -1834,8 +1834,8 @@ static struct pci_controller octeon_pcie1_controller = {
7356 };
7357
7358 static struct pci_ops octeon_dummy_ops = {
7359- octeon_dummy_read_config,
7360- octeon_dummy_write_config,
7361+ .read = octeon_dummy_read_config,
7362+ .write = octeon_dummy_write_config,
7363 };
7364
7365 static struct resource octeon_dummy_mem_resource = {
7366diff --git a/arch/mips/sgi-ip27/ip27-nmi.c b/arch/mips/sgi-ip27/ip27-nmi.c
7367index a2358b4..7cead4f 100644
7368--- a/arch/mips/sgi-ip27/ip27-nmi.c
7369+++ b/arch/mips/sgi-ip27/ip27-nmi.c
7370@@ -187,9 +187,9 @@ void
7371 cont_nmi_dump(void)
7372 {
7373 #ifndef REAL_NMI_SIGNAL
7374- static atomic_t nmied_cpus = ATOMIC_INIT(0);
7375+ static atomic_unchecked_t nmied_cpus = ATOMIC_INIT(0);
7376
7377- atomic_inc(&nmied_cpus);
7378+ atomic_inc_unchecked(&nmied_cpus);
7379 #endif
7380 /*
7381 * Only allow 1 cpu to proceed
7382@@ -233,7 +233,7 @@ cont_nmi_dump(void)
7383 udelay(10000);
7384 }
7385 #else
7386- while (atomic_read(&nmied_cpus) != num_online_cpus());
7387+ while (atomic_read_unchecked(&nmied_cpus) != num_online_cpus());
7388 #endif
7389
7390 /*
7391diff --git a/arch/mips/sni/rm200.c b/arch/mips/sni/rm200.c
7392index a046b30..6799527 100644
7393--- a/arch/mips/sni/rm200.c
7394+++ b/arch/mips/sni/rm200.c
7395@@ -270,7 +270,7 @@ spurious_8259A_irq:
7396 "spurious RM200 8259A interrupt: IRQ%d.\n", irq);
7397 spurious_irq_mask |= irqmask;
7398 }
7399- atomic_inc(&irq_err_count);
7400+ atomic_inc_unchecked(&irq_err_count);
7401 /*
7402 * Theoretically we do not have to handle this IRQ,
7403 * but in Linux this does not cause problems and is
7404diff --git a/arch/mips/vr41xx/common/icu.c b/arch/mips/vr41xx/common/icu.c
7405index 41e873b..34d33a7 100644
7406--- a/arch/mips/vr41xx/common/icu.c
7407+++ b/arch/mips/vr41xx/common/icu.c
7408@@ -653,7 +653,7 @@ static int icu_get_irq(unsigned int irq)
7409
7410 printk(KERN_ERR "spurious ICU interrupt: %04x,%04x\n", pend1, pend2);
7411
7412- atomic_inc(&irq_err_count);
7413+ atomic_inc_unchecked(&irq_err_count);
7414
7415 return -1;
7416 }
7417diff --git a/arch/mips/vr41xx/common/irq.c b/arch/mips/vr41xx/common/irq.c
7418index ae0e4ee..e8f0692 100644
7419--- a/arch/mips/vr41xx/common/irq.c
7420+++ b/arch/mips/vr41xx/common/irq.c
7421@@ -64,7 +64,7 @@ static void irq_dispatch(unsigned int irq)
7422 irq_cascade_t *cascade;
7423
7424 if (irq >= NR_IRQS) {
7425- atomic_inc(&irq_err_count);
7426+ atomic_inc_unchecked(&irq_err_count);
7427 return;
7428 }
7429
7430@@ -84,7 +84,7 @@ static void irq_dispatch(unsigned int irq)
7431 ret = cascade->get_irq(irq);
7432 irq = ret;
7433 if (ret < 0)
7434- atomic_inc(&irq_err_count);
7435+ atomic_inc_unchecked(&irq_err_count);
7436 else
7437 irq_dispatch(irq);
7438 if (!irqd_irq_disabled(idata) && chip->irq_unmask)
7439diff --git a/arch/mn10300/proc-mn103e010/include/proc/cache.h b/arch/mn10300/proc-mn103e010/include/proc/cache.h
7440index 967d144..db12197 100644
7441--- a/arch/mn10300/proc-mn103e010/include/proc/cache.h
7442+++ b/arch/mn10300/proc-mn103e010/include/proc/cache.h
7443@@ -11,12 +11,14 @@
7444 #ifndef _ASM_PROC_CACHE_H
7445 #define _ASM_PROC_CACHE_H
7446
7447+#include <linux/const.h>
7448+
7449 /* L1 cache */
7450
7451 #define L1_CACHE_NWAYS 4 /* number of ways in caches */
7452 #define L1_CACHE_NENTRIES 256 /* number of entries in each way */
7453-#define L1_CACHE_BYTES 16 /* bytes per entry */
7454 #define L1_CACHE_SHIFT 4 /* shift for bytes per entry */
7455+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) /* bytes per entry */
7456 #define L1_CACHE_WAYDISP 0x1000 /* displacement of one way from the next */
7457
7458 #define L1_CACHE_TAG_VALID 0x00000001 /* cache tag valid bit */
7459diff --git a/arch/mn10300/proc-mn2ws0050/include/proc/cache.h b/arch/mn10300/proc-mn2ws0050/include/proc/cache.h
7460index bcb5df2..84fabd2 100644
7461--- a/arch/mn10300/proc-mn2ws0050/include/proc/cache.h
7462+++ b/arch/mn10300/proc-mn2ws0050/include/proc/cache.h
7463@@ -16,13 +16,15 @@
7464 #ifndef _ASM_PROC_CACHE_H
7465 #define _ASM_PROC_CACHE_H
7466
7467+#include <linux/const.h>
7468+
7469 /*
7470 * L1 cache
7471 */
7472 #define L1_CACHE_NWAYS 4 /* number of ways in caches */
7473 #define L1_CACHE_NENTRIES 128 /* number of entries in each way */
7474-#define L1_CACHE_BYTES 32 /* bytes per entry */
7475 #define L1_CACHE_SHIFT 5 /* shift for bytes per entry */
7476+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT) /* bytes per entry */
7477 #define L1_CACHE_WAYDISP 0x1000 /* distance from one way to the next */
7478
7479 #define L1_CACHE_TAG_VALID 0x00000001 /* cache tag valid bit */
7480diff --git a/arch/openrisc/include/asm/cache.h b/arch/openrisc/include/asm/cache.h
7481index 4ce7a01..449202a 100644
7482--- a/arch/openrisc/include/asm/cache.h
7483+++ b/arch/openrisc/include/asm/cache.h
7484@@ -19,11 +19,13 @@
7485 #ifndef __ASM_OPENRISC_CACHE_H
7486 #define __ASM_OPENRISC_CACHE_H
7487
7488+#include <linux/const.h>
7489+
7490 /* FIXME: How can we replace these with values from the CPU...
7491 * they shouldn't be hard-coded!
7492 */
7493
7494-#define L1_CACHE_BYTES 16
7495 #define L1_CACHE_SHIFT 4
7496+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
7497
7498 #endif /* __ASM_OPENRISC_CACHE_H */
7499diff --git a/arch/parisc/include/asm/atomic.h b/arch/parisc/include/asm/atomic.h
7500index 472886c..00e7df9 100644
7501--- a/arch/parisc/include/asm/atomic.h
7502+++ b/arch/parisc/include/asm/atomic.h
7503@@ -252,6 +252,16 @@ static inline long atomic64_dec_if_positive(atomic64_t *v)
7504 return dec;
7505 }
7506
7507+#define atomic64_read_unchecked(v) atomic64_read(v)
7508+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i))
7509+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v))
7510+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v))
7511+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v))
7512+#define atomic64_inc_unchecked(v) atomic64_inc(v)
7513+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v)
7514+#define atomic64_dec_unchecked(v) atomic64_dec(v)
7515+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n))
7516+
7517 #endif /* !CONFIG_64BIT */
7518
7519
7520diff --git a/arch/parisc/include/asm/cache.h b/arch/parisc/include/asm/cache.h
7521index 47f11c7..3420df2 100644
7522--- a/arch/parisc/include/asm/cache.h
7523+++ b/arch/parisc/include/asm/cache.h
7524@@ -5,6 +5,7 @@
7525 #ifndef __ARCH_PARISC_CACHE_H
7526 #define __ARCH_PARISC_CACHE_H
7527
7528+#include <linux/const.h>
7529
7530 /*
7531 * PA 2.0 processors have 64-byte cachelines; PA 1.1 processors have
7532@@ -15,13 +16,13 @@
7533 * just ruin performance.
7534 */
7535 #ifdef CONFIG_PA20
7536-#define L1_CACHE_BYTES 64
7537 #define L1_CACHE_SHIFT 6
7538 #else
7539-#define L1_CACHE_BYTES 32
7540 #define L1_CACHE_SHIFT 5
7541 #endif
7542
7543+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
7544+
7545 #ifndef __ASSEMBLY__
7546
7547 #define SMP_CACHE_BYTES L1_CACHE_BYTES
7548diff --git a/arch/parisc/include/asm/elf.h b/arch/parisc/include/asm/elf.h
7549index 3391d06..c23a2cc 100644
7550--- a/arch/parisc/include/asm/elf.h
7551+++ b/arch/parisc/include/asm/elf.h
7552@@ -342,6 +342,13 @@ struct pt_regs; /* forward declaration... */
7553
7554 #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE + 0x01000000)
7555
7556+#ifdef CONFIG_PAX_ASLR
7557+#define PAX_ELF_ET_DYN_BASE 0x10000UL
7558+
7559+#define PAX_DELTA_MMAP_LEN 16
7560+#define PAX_DELTA_STACK_LEN 16
7561+#endif
7562+
7563 /* This yields a mask that user programs can use to figure out what
7564 instruction set this CPU supports. This could be done in user space,
7565 but it's not easy, and we've already done it here. */
7566diff --git a/arch/parisc/include/asm/pgalloc.h b/arch/parisc/include/asm/pgalloc.h
7567index f213f5b..0af3e8e 100644
7568--- a/arch/parisc/include/asm/pgalloc.h
7569+++ b/arch/parisc/include/asm/pgalloc.h
7570@@ -61,6 +61,11 @@ static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
7571 (__u32)(__pa((unsigned long)pmd) >> PxD_VALUE_SHIFT));
7572 }
7573
7574+static inline void pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmd)
7575+{
7576+ pgd_populate(mm, pgd, pmd);
7577+}
7578+
7579 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long address)
7580 {
7581 pmd_t *pmd = (pmd_t *)__get_free_pages(GFP_KERNEL|__GFP_REPEAT,
7582@@ -93,6 +98,7 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
7583 #define pmd_alloc_one(mm, addr) ({ BUG(); ((pmd_t *)2); })
7584 #define pmd_free(mm, x) do { } while (0)
7585 #define pgd_populate(mm, pmd, pte) BUG()
7586+#define pgd_populate_kernel(mm, pmd, pte) BUG()
7587
7588 #endif
7589
7590diff --git a/arch/parisc/include/asm/pgtable.h b/arch/parisc/include/asm/pgtable.h
7591index 22b89d1..ce34230 100644
7592--- a/arch/parisc/include/asm/pgtable.h
7593+++ b/arch/parisc/include/asm/pgtable.h
7594@@ -223,6 +223,17 @@ extern void purge_tlb_entries(struct mm_struct *, unsigned long);
7595 #define PAGE_EXECREAD __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_EXEC |_PAGE_ACCESSED)
7596 #define PAGE_COPY PAGE_EXECREAD
7597 #define PAGE_RWX __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_EXEC |_PAGE_ACCESSED)
7598+
7599+#ifdef CONFIG_PAX_PAGEEXEC
7600+# define PAGE_SHARED_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_WRITE | _PAGE_ACCESSED)
7601+# define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED)
7602+# define PAGE_READONLY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_READ | _PAGE_ACCESSED)
7603+#else
7604+# define PAGE_SHARED_NOEXEC PAGE_SHARED
7605+# define PAGE_COPY_NOEXEC PAGE_COPY
7606+# define PAGE_READONLY_NOEXEC PAGE_READONLY
7607+#endif
7608+
7609 #define PAGE_KERNEL __pgprot(_PAGE_KERNEL)
7610 #define PAGE_KERNEL_EXEC __pgprot(_PAGE_KERNEL_EXEC)
7611 #define PAGE_KERNEL_RWX __pgprot(_PAGE_KERNEL_RWX)
7612diff --git a/arch/parisc/include/asm/uaccess.h b/arch/parisc/include/asm/uaccess.h
7613index 4006964..fcb3cc2 100644
7614--- a/arch/parisc/include/asm/uaccess.h
7615+++ b/arch/parisc/include/asm/uaccess.h
7616@@ -246,10 +246,10 @@ static inline unsigned long __must_check copy_from_user(void *to,
7617 const void __user *from,
7618 unsigned long n)
7619 {
7620- int sz = __compiletime_object_size(to);
7621+ size_t sz = __compiletime_object_size(to);
7622 int ret = -EFAULT;
7623
7624- if (likely(sz == -1 || !__builtin_constant_p(n) || sz >= n))
7625+ if (likely(sz == (size_t)-1 || !__builtin_constant_p(n) || sz >= n))
7626 ret = __copy_from_user(to, from, n);
7627 else
7628 copy_from_user_overflow();
7629diff --git a/arch/parisc/kernel/module.c b/arch/parisc/kernel/module.c
7630index 50dfafc..b9fc230 100644
7631--- a/arch/parisc/kernel/module.c
7632+++ b/arch/parisc/kernel/module.c
7633@@ -98,16 +98,38 @@
7634
7635 /* three functions to determine where in the module core
7636 * or init pieces the location is */
7637+static inline int in_init_rx(struct module *me, void *loc)
7638+{
7639+ return (loc >= me->module_init_rx &&
7640+ loc < (me->module_init_rx + me->init_size_rx));
7641+}
7642+
7643+static inline int in_init_rw(struct module *me, void *loc)
7644+{
7645+ return (loc >= me->module_init_rw &&
7646+ loc < (me->module_init_rw + me->init_size_rw));
7647+}
7648+
7649 static inline int in_init(struct module *me, void *loc)
7650 {
7651- return (loc >= me->module_init &&
7652- loc <= (me->module_init + me->init_size));
7653+ return in_init_rx(me, loc) || in_init_rw(me, loc);
7654+}
7655+
7656+static inline int in_core_rx(struct module *me, void *loc)
7657+{
7658+ return (loc >= me->module_core_rx &&
7659+ loc < (me->module_core_rx + me->core_size_rx));
7660+}
7661+
7662+static inline int in_core_rw(struct module *me, void *loc)
7663+{
7664+ return (loc >= me->module_core_rw &&
7665+ loc < (me->module_core_rw + me->core_size_rw));
7666 }
7667
7668 static inline int in_core(struct module *me, void *loc)
7669 {
7670- return (loc >= me->module_core &&
7671- loc <= (me->module_core + me->core_size));
7672+ return in_core_rx(me, loc) || in_core_rw(me, loc);
7673 }
7674
7675 static inline int in_local(struct module *me, void *loc)
7676@@ -371,13 +393,13 @@ int module_frob_arch_sections(CONST Elf_Ehdr *hdr,
7677 }
7678
7679 /* align things a bit */
7680- me->core_size = ALIGN(me->core_size, 16);
7681- me->arch.got_offset = me->core_size;
7682- me->core_size += gots * sizeof(struct got_entry);
7683+ me->core_size_rw = ALIGN(me->core_size_rw, 16);
7684+ me->arch.got_offset = me->core_size_rw;
7685+ me->core_size_rw += gots * sizeof(struct got_entry);
7686
7687- me->core_size = ALIGN(me->core_size, 16);
7688- me->arch.fdesc_offset = me->core_size;
7689- me->core_size += fdescs * sizeof(Elf_Fdesc);
7690+ me->core_size_rw = ALIGN(me->core_size_rw, 16);
7691+ me->arch.fdesc_offset = me->core_size_rw;
7692+ me->core_size_rw += fdescs * sizeof(Elf_Fdesc);
7693
7694 me->arch.got_max = gots;
7695 me->arch.fdesc_max = fdescs;
7696@@ -395,7 +417,7 @@ static Elf64_Word get_got(struct module *me, unsigned long value, long addend)
7697
7698 BUG_ON(value == 0);
7699
7700- got = me->module_core + me->arch.got_offset;
7701+ got = me->module_core_rw + me->arch.got_offset;
7702 for (i = 0; got[i].addr; i++)
7703 if (got[i].addr == value)
7704 goto out;
7705@@ -413,7 +435,7 @@ static Elf64_Word get_got(struct module *me, unsigned long value, long addend)
7706 #ifdef CONFIG_64BIT
7707 static Elf_Addr get_fdesc(struct module *me, unsigned long value)
7708 {
7709- Elf_Fdesc *fdesc = me->module_core + me->arch.fdesc_offset;
7710+ Elf_Fdesc *fdesc = me->module_core_rw + me->arch.fdesc_offset;
7711
7712 if (!value) {
7713 printk(KERN_ERR "%s: zero OPD requested!\n", me->name);
7714@@ -431,7 +453,7 @@ static Elf_Addr get_fdesc(struct module *me, unsigned long value)
7715
7716 /* Create new one */
7717 fdesc->addr = value;
7718- fdesc->gp = (Elf_Addr)me->module_core + me->arch.got_offset;
7719+ fdesc->gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset;
7720 return (Elf_Addr)fdesc;
7721 }
7722 #endif /* CONFIG_64BIT */
7723@@ -843,7 +865,7 @@ register_unwind_table(struct module *me,
7724
7725 table = (unsigned char *)sechdrs[me->arch.unwind_section].sh_addr;
7726 end = table + sechdrs[me->arch.unwind_section].sh_size;
7727- gp = (Elf_Addr)me->module_core + me->arch.got_offset;
7728+ gp = (Elf_Addr)me->module_core_rw + me->arch.got_offset;
7729
7730 DEBUGP("register_unwind_table(), sect = %d at 0x%p - 0x%p (gp=0x%lx)\n",
7731 me->arch.unwind_section, table, end, gp);
7732diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
7733index e1ffea2..46ed66e 100644
7734--- a/arch/parisc/kernel/sys_parisc.c
7735+++ b/arch/parisc/kernel/sys_parisc.c
7736@@ -89,6 +89,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
7737 unsigned long task_size = TASK_SIZE;
7738 int do_color_align, last_mmap;
7739 struct vm_unmapped_area_info info;
7740+ unsigned long offset = gr_rand_threadstack_offset(current->mm, filp, flags);
7741
7742 if (len > task_size)
7743 return -ENOMEM;
7744@@ -106,6 +107,10 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
7745 goto found_addr;
7746 }
7747
7748+#ifdef CONFIG_PAX_RANDMMAP
7749+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
7750+#endif
7751+
7752 if (addr) {
7753 if (do_color_align && last_mmap)
7754 addr = COLOR_ALIGN(addr, last_mmap, pgoff);
7755@@ -124,6 +129,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
7756 info.high_limit = mmap_upper_limit();
7757 info.align_mask = last_mmap ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0;
7758 info.align_offset = shared_align_offset(last_mmap, pgoff);
7759+ info.threadstack_offset = offset;
7760 addr = vm_unmapped_area(&info);
7761
7762 found_addr:
7763@@ -143,6 +149,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
7764 unsigned long addr = addr0;
7765 int do_color_align, last_mmap;
7766 struct vm_unmapped_area_info info;
7767+ unsigned long offset = gr_rand_threadstack_offset(current->mm, filp, flags);
7768
7769 #ifdef CONFIG_64BIT
7770 /* This should only ever run for 32-bit processes. */
7771@@ -167,6 +174,10 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
7772 }
7773
7774 /* requesting a specific address */
7775+#ifdef CONFIG_PAX_RANDMMAP
7776+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
7777+#endif
7778+
7779 if (addr) {
7780 if (do_color_align && last_mmap)
7781 addr = COLOR_ALIGN(addr, last_mmap, pgoff);
7782@@ -184,6 +195,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
7783 info.high_limit = mm->mmap_base;
7784 info.align_mask = last_mmap ? (PAGE_MASK & (SHM_COLOUR - 1)) : 0;
7785 info.align_offset = shared_align_offset(last_mmap, pgoff);
7786+ info.threadstack_offset = offset;
7787 addr = vm_unmapped_area(&info);
7788 if (!(addr & ~PAGE_MASK))
7789 goto found_addr;
7790@@ -249,6 +261,13 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
7791 mm->mmap_legacy_base = mmap_legacy_base();
7792 mm->mmap_base = mmap_upper_limit();
7793
7794+#ifdef CONFIG_PAX_RANDMMAP
7795+ if (mm->pax_flags & MF_PAX_RANDMMAP) {
7796+ mm->mmap_legacy_base += mm->delta_mmap;
7797+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
7798+ }
7799+#endif
7800+
7801 if (mmap_is_legacy()) {
7802 mm->mmap_base = mm->mmap_legacy_base;
7803 mm->get_unmapped_area = arch_get_unmapped_area;
7804diff --git a/arch/parisc/kernel/traps.c b/arch/parisc/kernel/traps.c
7805index 47ee620..1107387 100644
7806--- a/arch/parisc/kernel/traps.c
7807+++ b/arch/parisc/kernel/traps.c
7808@@ -726,9 +726,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
7809
7810 down_read(&current->mm->mmap_sem);
7811 vma = find_vma(current->mm,regs->iaoq[0]);
7812- if (vma && (regs->iaoq[0] >= vma->vm_start)
7813- && (vma->vm_flags & VM_EXEC)) {
7814-
7815+ if (vma && (regs->iaoq[0] >= vma->vm_start)) {
7816 fault_address = regs->iaoq[0];
7817 fault_space = regs->iasq[0];
7818
7819diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
7820index 3ca9c11..d163ef7 100644
7821--- a/arch/parisc/mm/fault.c
7822+++ b/arch/parisc/mm/fault.c
7823@@ -15,6 +15,7 @@
7824 #include <linux/sched.h>
7825 #include <linux/interrupt.h>
7826 #include <linux/module.h>
7827+#include <linux/unistd.h>
7828
7829 #include <asm/uaccess.h>
7830 #include <asm/traps.h>
7831@@ -50,7 +51,7 @@ int show_unhandled_signals = 1;
7832 static unsigned long
7833 parisc_acctyp(unsigned long code, unsigned int inst)
7834 {
7835- if (code == 6 || code == 16)
7836+ if (code == 6 || code == 7 || code == 16)
7837 return VM_EXEC;
7838
7839 switch (inst & 0xf0000000) {
7840@@ -136,6 +137,116 @@ parisc_acctyp(unsigned long code, unsigned int inst)
7841 }
7842 #endif
7843
7844+#ifdef CONFIG_PAX_PAGEEXEC
7845+/*
7846+ * PaX: decide what to do with offenders (instruction_pointer(regs) = fault address)
7847+ *
7848+ * returns 1 when task should be killed
7849+ * 2 when rt_sigreturn trampoline was detected
7850+ * 3 when unpatched PLT trampoline was detected
7851+ */
7852+static int pax_handle_fetch_fault(struct pt_regs *regs)
7853+{
7854+
7855+#ifdef CONFIG_PAX_EMUPLT
7856+ int err;
7857+
7858+ do { /* PaX: unpatched PLT emulation */
7859+ unsigned int bl, depwi;
7860+
7861+ err = get_user(bl, (unsigned int *)instruction_pointer(regs));
7862+ err |= get_user(depwi, (unsigned int *)(instruction_pointer(regs)+4));
7863+
7864+ if (err)
7865+ break;
7866+
7867+ if (bl == 0xEA9F1FDDU && depwi == 0xD6801C1EU) {
7868+ unsigned int ldw, bv, ldw2, addr = instruction_pointer(regs)-12;
7869+
7870+ err = get_user(ldw, (unsigned int *)addr);
7871+ err |= get_user(bv, (unsigned int *)(addr+4));
7872+ err |= get_user(ldw2, (unsigned int *)(addr+8));
7873+
7874+ if (err)
7875+ break;
7876+
7877+ if (ldw == 0x0E801096U &&
7878+ bv == 0xEAC0C000U &&
7879+ ldw2 == 0x0E881095U)
7880+ {
7881+ unsigned int resolver, map;
7882+
7883+ err = get_user(resolver, (unsigned int *)(instruction_pointer(regs)+8));
7884+ err |= get_user(map, (unsigned int *)(instruction_pointer(regs)+12));
7885+ if (err)
7886+ break;
7887+
7888+ regs->gr[20] = instruction_pointer(regs)+8;
7889+ regs->gr[21] = map;
7890+ regs->gr[22] = resolver;
7891+ regs->iaoq[0] = resolver | 3UL;
7892+ regs->iaoq[1] = regs->iaoq[0] + 4;
7893+ return 3;
7894+ }
7895+ }
7896+ } while (0);
7897+#endif
7898+
7899+#ifdef CONFIG_PAX_EMUTRAMP
7900+
7901+#ifndef CONFIG_PAX_EMUSIGRT
7902+ if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP))
7903+ return 1;
7904+#endif
7905+
7906+ do { /* PaX: rt_sigreturn emulation */
7907+ unsigned int ldi1, ldi2, bel, nop;
7908+
7909+ err = get_user(ldi1, (unsigned int *)instruction_pointer(regs));
7910+ err |= get_user(ldi2, (unsigned int *)(instruction_pointer(regs)+4));
7911+ err |= get_user(bel, (unsigned int *)(instruction_pointer(regs)+8));
7912+ err |= get_user(nop, (unsigned int *)(instruction_pointer(regs)+12));
7913+
7914+ if (err)
7915+ break;
7916+
7917+ if ((ldi1 == 0x34190000U || ldi1 == 0x34190002U) &&
7918+ ldi2 == 0x3414015AU &&
7919+ bel == 0xE4008200U &&
7920+ nop == 0x08000240U)
7921+ {
7922+ regs->gr[25] = (ldi1 & 2) >> 1;
7923+ regs->gr[20] = __NR_rt_sigreturn;
7924+ regs->gr[31] = regs->iaoq[1] + 16;
7925+ regs->sr[0] = regs->iasq[1];
7926+ regs->iaoq[0] = 0x100UL;
7927+ regs->iaoq[1] = regs->iaoq[0] + 4;
7928+ regs->iasq[0] = regs->sr[2];
7929+ regs->iasq[1] = regs->sr[2];
7930+ return 2;
7931+ }
7932+ } while (0);
7933+#endif
7934+
7935+ return 1;
7936+}
7937+
7938+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
7939+{
7940+ unsigned long i;
7941+
7942+ printk(KERN_ERR "PAX: bytes at PC: ");
7943+ for (i = 0; i < 5; i++) {
7944+ unsigned int c;
7945+ if (get_user(c, (unsigned int *)pc+i))
7946+ printk(KERN_CONT "???????? ");
7947+ else
7948+ printk(KERN_CONT "%08x ", c);
7949+ }
7950+ printk("\n");
7951+}
7952+#endif
7953+
7954 int fixup_exception(struct pt_regs *regs)
7955 {
7956 const struct exception_table_entry *fix;
7957@@ -234,8 +345,33 @@ retry:
7958
7959 good_area:
7960
7961- if ((vma->vm_flags & acc_type) != acc_type)
7962+ if ((vma->vm_flags & acc_type) != acc_type) {
7963+
7964+#ifdef CONFIG_PAX_PAGEEXEC
7965+ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && (acc_type & VM_EXEC) &&
7966+ (address & ~3UL) == instruction_pointer(regs))
7967+ {
7968+ up_read(&mm->mmap_sem);
7969+ switch (pax_handle_fetch_fault(regs)) {
7970+
7971+#ifdef CONFIG_PAX_EMUPLT
7972+ case 3:
7973+ return;
7974+#endif
7975+
7976+#ifdef CONFIG_PAX_EMUTRAMP
7977+ case 2:
7978+ return;
7979+#endif
7980+
7981+ }
7982+ pax_report_fault(regs, (void *)instruction_pointer(regs), (void *)regs->gr[30]);
7983+ do_group_exit(SIGKILL);
7984+ }
7985+#endif
7986+
7987 goto bad_area;
7988+ }
7989
7990 /*
7991 * If for any reason at all we couldn't handle the fault, make
7992diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
7993index e099899..457d6a8 100644
7994--- a/arch/powerpc/Kconfig
7995+++ b/arch/powerpc/Kconfig
7996@@ -397,6 +397,7 @@ config PPC64_SUPPORTS_MEMORY_FAILURE
7997 config KEXEC
7998 bool "kexec system call"
7999 depends on (PPC_BOOK3S || FSL_BOOKE || (44x && !SMP))
8000+ depends on !GRKERNSEC_KMEM
8001 help
8002 kexec is a system call that implements the ability to shutdown your
8003 current kernel, and to start another kernel. It is like a reboot
8004diff --git a/arch/powerpc/include/asm/atomic.h b/arch/powerpc/include/asm/atomic.h
8005index e3b1d41..8e81edf 100644
8006--- a/arch/powerpc/include/asm/atomic.h
8007+++ b/arch/powerpc/include/asm/atomic.h
8008@@ -523,6 +523,16 @@ static __inline__ long atomic64_inc_not_zero(atomic64_t *v)
8009 return t1;
8010 }
8011
8012+#define atomic64_read_unchecked(v) atomic64_read(v)
8013+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i))
8014+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v))
8015+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v))
8016+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v))
8017+#define atomic64_inc_unchecked(v) atomic64_inc(v)
8018+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v)
8019+#define atomic64_dec_unchecked(v) atomic64_dec(v)
8020+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n))
8021+
8022 #endif /* __powerpc64__ */
8023
8024 #endif /* __KERNEL__ */
8025diff --git a/arch/powerpc/include/asm/barrier.h b/arch/powerpc/include/asm/barrier.h
8026index f89da80..7f5b05a 100644
8027--- a/arch/powerpc/include/asm/barrier.h
8028+++ b/arch/powerpc/include/asm/barrier.h
8029@@ -73,7 +73,7 @@
8030 do { \
8031 compiletime_assert_atomic_type(*p); \
8032 __lwsync(); \
8033- ACCESS_ONCE(*p) = (v); \
8034+ ACCESS_ONCE_RW(*p) = (v); \
8035 } while (0)
8036
8037 #define smp_load_acquire(p) \
8038diff --git a/arch/powerpc/include/asm/cache.h b/arch/powerpc/include/asm/cache.h
8039index ed0afc1..0332825 100644
8040--- a/arch/powerpc/include/asm/cache.h
8041+++ b/arch/powerpc/include/asm/cache.h
8042@@ -3,6 +3,7 @@
8043
8044 #ifdef __KERNEL__
8045
8046+#include <linux/const.h>
8047
8048 /* bytes per L1 cache line */
8049 #if defined(CONFIG_8xx) || defined(CONFIG_403GCX)
8050@@ -22,7 +23,7 @@
8051 #define L1_CACHE_SHIFT 7
8052 #endif
8053
8054-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
8055+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
8056
8057 #define SMP_CACHE_BYTES L1_CACHE_BYTES
8058
8059diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h
8060index 935b5e7..7001d2d 100644
8061--- a/arch/powerpc/include/asm/elf.h
8062+++ b/arch/powerpc/include/asm/elf.h
8063@@ -28,8 +28,19 @@
8064 the loader. We need to make sure that it is out of the way of the program
8065 that it will "exec", and that there is sufficient room for the brk. */
8066
8067-extern unsigned long randomize_et_dyn(unsigned long base);
8068-#define ELF_ET_DYN_BASE (randomize_et_dyn(0x20000000))
8069+#define ELF_ET_DYN_BASE (0x20000000)
8070+
8071+#ifdef CONFIG_PAX_ASLR
8072+#define PAX_ELF_ET_DYN_BASE (0x10000000UL)
8073+
8074+#ifdef __powerpc64__
8075+#define PAX_DELTA_MMAP_LEN (is_32bit_task() ? 16 : 28)
8076+#define PAX_DELTA_STACK_LEN (is_32bit_task() ? 16 : 28)
8077+#else
8078+#define PAX_DELTA_MMAP_LEN 15
8079+#define PAX_DELTA_STACK_LEN 15
8080+#endif
8081+#endif
8082
8083 #define ELF_CORE_EFLAGS (is_elf2_task() ? 2 : 0)
8084
8085@@ -127,10 +138,6 @@ extern int arch_setup_additional_pages(struct linux_binprm *bprm,
8086 (0x7ff >> (PAGE_SHIFT - 12)) : \
8087 (0x3ffff >> (PAGE_SHIFT - 12)))
8088
8089-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
8090-#define arch_randomize_brk arch_randomize_brk
8091-
8092-
8093 #ifdef CONFIG_SPU_BASE
8094 /* Notes used in ET_CORE. Note name is "SPU/<fd>/<filename>". */
8095 #define NT_SPU 1
8096diff --git a/arch/powerpc/include/asm/exec.h b/arch/powerpc/include/asm/exec.h
8097index 8196e9c..d83a9f3 100644
8098--- a/arch/powerpc/include/asm/exec.h
8099+++ b/arch/powerpc/include/asm/exec.h
8100@@ -4,6 +4,6 @@
8101 #ifndef _ASM_POWERPC_EXEC_H
8102 #define _ASM_POWERPC_EXEC_H
8103
8104-extern unsigned long arch_align_stack(unsigned long sp);
8105+#define arch_align_stack(x) ((x) & ~0xfUL)
8106
8107 #endif /* _ASM_POWERPC_EXEC_H */
8108diff --git a/arch/powerpc/include/asm/kmap_types.h b/arch/powerpc/include/asm/kmap_types.h
8109index 5acabbd..7ea14fa 100644
8110--- a/arch/powerpc/include/asm/kmap_types.h
8111+++ b/arch/powerpc/include/asm/kmap_types.h
8112@@ -10,7 +10,7 @@
8113 * 2 of the License, or (at your option) any later version.
8114 */
8115
8116-#define KM_TYPE_NR 16
8117+#define KM_TYPE_NR 17
8118
8119 #endif /* __KERNEL__ */
8120 #endif /* _ASM_POWERPC_KMAP_TYPES_H */
8121diff --git a/arch/powerpc/include/asm/local.h b/arch/powerpc/include/asm/local.h
8122index b8da913..60b608a 100644
8123--- a/arch/powerpc/include/asm/local.h
8124+++ b/arch/powerpc/include/asm/local.h
8125@@ -9,15 +9,26 @@ typedef struct
8126 atomic_long_t a;
8127 } local_t;
8128
8129+typedef struct
8130+{
8131+ atomic_long_unchecked_t a;
8132+} local_unchecked_t;
8133+
8134 #define LOCAL_INIT(i) { ATOMIC_LONG_INIT(i) }
8135
8136 #define local_read(l) atomic_long_read(&(l)->a)
8137+#define local_read_unchecked(l) atomic_long_read_unchecked(&(l)->a)
8138 #define local_set(l,i) atomic_long_set(&(l)->a, (i))
8139+#define local_set_unchecked(l,i) atomic_long_set_unchecked(&(l)->a, (i))
8140
8141 #define local_add(i,l) atomic_long_add((i),(&(l)->a))
8142+#define local_add_unchecked(i,l) atomic_long_add_unchecked((i),(&(l)->a))
8143 #define local_sub(i,l) atomic_long_sub((i),(&(l)->a))
8144+#define local_sub_unchecked(i,l) atomic_long_sub_unchecked((i),(&(l)->a))
8145 #define local_inc(l) atomic_long_inc(&(l)->a)
8146+#define local_inc_unchecked(l) atomic_long_inc_unchecked(&(l)->a)
8147 #define local_dec(l) atomic_long_dec(&(l)->a)
8148+#define local_dec_unchecked(l) atomic_long_dec_unchecked(&(l)->a)
8149
8150 static __inline__ long local_add_return(long a, local_t *l)
8151 {
8152@@ -35,6 +46,7 @@ static __inline__ long local_add_return(long a, local_t *l)
8153
8154 return t;
8155 }
8156+#define local_add_return_unchecked(i, l) atomic_long_add_return_unchecked((i), (&(l)->a))
8157
8158 #define local_add_negative(a, l) (local_add_return((a), (l)) < 0)
8159
8160@@ -54,6 +66,7 @@ static __inline__ long local_sub_return(long a, local_t *l)
8161
8162 return t;
8163 }
8164+#define local_sub_return_unchecked(i, l) atomic_long_sub_return_unchecked((i), (&(l)->a))
8165
8166 static __inline__ long local_inc_return(local_t *l)
8167 {
8168@@ -101,6 +114,8 @@ static __inline__ long local_dec_return(local_t *l)
8169
8170 #define local_cmpxchg(l, o, n) \
8171 (cmpxchg_local(&((l)->a.counter), (o), (n)))
8172+#define local_cmpxchg_unchecked(l, o, n) \
8173+ (cmpxchg_local(&((l)->a.counter), (o), (n)))
8174 #define local_xchg(l, n) (xchg_local(&((l)->a.counter), (n)))
8175
8176 /**
8177diff --git a/arch/powerpc/include/asm/mman.h b/arch/powerpc/include/asm/mman.h
8178index 8565c25..2865190 100644
8179--- a/arch/powerpc/include/asm/mman.h
8180+++ b/arch/powerpc/include/asm/mman.h
8181@@ -24,7 +24,7 @@ static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot)
8182 }
8183 #define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot)
8184
8185-static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags)
8186+static inline pgprot_t arch_vm_get_page_prot(vm_flags_t vm_flags)
8187 {
8188 return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0);
8189 }
8190diff --git a/arch/powerpc/include/asm/page.h b/arch/powerpc/include/asm/page.h
8191index 32e4e21..62afb12 100644
8192--- a/arch/powerpc/include/asm/page.h
8193+++ b/arch/powerpc/include/asm/page.h
8194@@ -230,8 +230,9 @@ extern long long virt_phys_offset;
8195 * and needs to be executable. This means the whole heap ends
8196 * up being executable.
8197 */
8198-#define VM_DATA_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \
8199- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
8200+#define VM_DATA_DEFAULT_FLAGS32 \
8201+ (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
8202+ VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
8203
8204 #define VM_DATA_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \
8205 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
8206@@ -259,6 +260,9 @@ extern long long virt_phys_offset;
8207 #define is_kernel_addr(x) ((x) >= PAGE_OFFSET)
8208 #endif
8209
8210+#define ktla_ktva(addr) (addr)
8211+#define ktva_ktla(addr) (addr)
8212+
8213 #ifndef CONFIG_PPC_BOOK3S_64
8214 /*
8215 * Use the top bit of the higher-level page table entries to indicate whether
8216diff --git a/arch/powerpc/include/asm/page_64.h b/arch/powerpc/include/asm/page_64.h
8217index 88693ce..ac6f9ab 100644
8218--- a/arch/powerpc/include/asm/page_64.h
8219+++ b/arch/powerpc/include/asm/page_64.h
8220@@ -153,15 +153,18 @@ do { \
8221 * stack by default, so in the absence of a PT_GNU_STACK program header
8222 * we turn execute permission off.
8223 */
8224-#define VM_STACK_DEFAULT_FLAGS32 (VM_READ | VM_WRITE | VM_EXEC | \
8225- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
8226+#define VM_STACK_DEFAULT_FLAGS32 \
8227+ (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0) | \
8228+ VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
8229
8230 #define VM_STACK_DEFAULT_FLAGS64 (VM_READ | VM_WRITE | \
8231 VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
8232
8233+#ifndef CONFIG_PAX_PAGEEXEC
8234 #define VM_STACK_DEFAULT_FLAGS \
8235 (is_32bit_task() ? \
8236 VM_STACK_DEFAULT_FLAGS32 : VM_STACK_DEFAULT_FLAGS64)
8237+#endif
8238
8239 #include <asm-generic/getorder.h>
8240
8241diff --git a/arch/powerpc/include/asm/pgalloc-64.h b/arch/powerpc/include/asm/pgalloc-64.h
8242index 4b0be20..c15a27d 100644
8243--- a/arch/powerpc/include/asm/pgalloc-64.h
8244+++ b/arch/powerpc/include/asm/pgalloc-64.h
8245@@ -54,6 +54,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
8246 #ifndef CONFIG_PPC_64K_PAGES
8247
8248 #define pgd_populate(MM, PGD, PUD) pgd_set(PGD, PUD)
8249+#define pgd_populate_kernel(MM, PGD, PUD) pgd_populate((MM), (PGD), (PUD))
8250
8251 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
8252 {
8253@@ -71,6 +72,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
8254 pud_set(pud, (unsigned long)pmd);
8255 }
8256
8257+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
8258+{
8259+ pud_populate(mm, pud, pmd);
8260+}
8261+
8262 #define pmd_populate(mm, pmd, pte_page) \
8263 pmd_populate_kernel(mm, pmd, page_address(pte_page))
8264 #define pmd_populate_kernel(mm, pmd, pte) pmd_set(pmd, (unsigned long)(pte))
8265@@ -173,6 +179,7 @@ extern void __tlb_remove_table(void *_table);
8266 #endif
8267
8268 #define pud_populate(mm, pud, pmd) pud_set(pud, (unsigned long)pmd)
8269+#define pud_populate_kernel(mm, pud, pmd) pud_populate((mm), (pud), (pmd))
8270
8271 static inline void pmd_populate_kernel(struct mm_struct *mm, pmd_t *pmd,
8272 pte_t *pte)
8273diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
8274index 3ebb188..e17dddf 100644
8275--- a/arch/powerpc/include/asm/pgtable.h
8276+++ b/arch/powerpc/include/asm/pgtable.h
8277@@ -2,6 +2,7 @@
8278 #define _ASM_POWERPC_PGTABLE_H
8279 #ifdef __KERNEL__
8280
8281+#include <linux/const.h>
8282 #ifndef __ASSEMBLY__
8283 #include <linux/mmdebug.h>
8284 #include <asm/processor.h> /* For TASK_SIZE */
8285diff --git a/arch/powerpc/include/asm/pte-hash32.h b/arch/powerpc/include/asm/pte-hash32.h
8286index 4aad413..85d86bf 100644
8287--- a/arch/powerpc/include/asm/pte-hash32.h
8288+++ b/arch/powerpc/include/asm/pte-hash32.h
8289@@ -21,6 +21,7 @@
8290 #define _PAGE_FILE 0x004 /* when !present: nonlinear file mapping */
8291 #define _PAGE_USER 0x004 /* usermode access allowed */
8292 #define _PAGE_GUARDED 0x008 /* G: prohibit speculative access */
8293+#define _PAGE_EXEC _PAGE_GUARDED
8294 #define _PAGE_COHERENT 0x010 /* M: enforce memory coherence (SMP systems) */
8295 #define _PAGE_NO_CACHE 0x020 /* I: cache inhibit */
8296 #define _PAGE_WRITETHRU 0x040 /* W: cache write-through */
8297diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
8298index e5d2e0b..9ac74b1 100644
8299--- a/arch/powerpc/include/asm/reg.h
8300+++ b/arch/powerpc/include/asm/reg.h
8301@@ -249,6 +249,7 @@
8302 #define SPRN_DBCR 0x136 /* e300 Data Breakpoint Control Reg */
8303 #define SPRN_DSISR 0x012 /* Data Storage Interrupt Status Register */
8304 #define DSISR_NOHPTE 0x40000000 /* no translation found */
8305+#define DSISR_GUARDED 0x10000000 /* fetch from guarded storage */
8306 #define DSISR_PROTFAULT 0x08000000 /* protection fault */
8307 #define DSISR_ISSTORE 0x02000000 /* access was a store */
8308 #define DSISR_DABRMATCH 0x00400000 /* hit data breakpoint */
8309diff --git a/arch/powerpc/include/asm/smp.h b/arch/powerpc/include/asm/smp.h
8310index ff51046..b982dd4 100644
8311--- a/arch/powerpc/include/asm/smp.h
8312+++ b/arch/powerpc/include/asm/smp.h
8313@@ -51,7 +51,7 @@ struct smp_ops_t {
8314 int (*cpu_disable)(void);
8315 void (*cpu_die)(unsigned int nr);
8316 int (*cpu_bootable)(unsigned int nr);
8317-};
8318+} __no_const;
8319
8320 extern void smp_send_debugger_break(void);
8321 extern void start_secondary_resume(void);
8322diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
8323index b034ecd..af7e31f 100644
8324--- a/arch/powerpc/include/asm/thread_info.h
8325+++ b/arch/powerpc/include/asm/thread_info.h
8326@@ -107,6 +107,8 @@ static inline struct thread_info *current_thread_info(void)
8327 #if defined(CONFIG_PPC64)
8328 #define TIF_ELF2ABI 18 /* function descriptors must die! */
8329 #endif
8330+/* mask must be expressable within 16 bits to satisfy 'andi' instruction reqs */
8331+#define TIF_GRSEC_SETXID 6 /* update credentials on syscall entry/exit */
8332
8333 /* as above, but as bit values */
8334 #define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
8335@@ -125,9 +127,10 @@ static inline struct thread_info *current_thread_info(void)
8336 #define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT)
8337 #define _TIF_EMULATE_STACK_STORE (1<<TIF_EMULATE_STACK_STORE)
8338 #define _TIF_NOHZ (1<<TIF_NOHZ)
8339+#define _TIF_GRSEC_SETXID (1<<TIF_GRSEC_SETXID)
8340 #define _TIF_SYSCALL_T_OR_A (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
8341 _TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT | \
8342- _TIF_NOHZ)
8343+ _TIF_NOHZ | _TIF_GRSEC_SETXID)
8344
8345 #define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NEED_RESCHED | \
8346 _TIF_NOTIFY_RESUME | _TIF_UPROBE | \
8347diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
8348index 9485b43..3bd3c16 100644
8349--- a/arch/powerpc/include/asm/uaccess.h
8350+++ b/arch/powerpc/include/asm/uaccess.h
8351@@ -58,6 +58,7 @@
8352
8353 #endif
8354
8355+#define access_ok_noprefault(type, addr, size) access_ok((type), (addr), (size))
8356 #define access_ok(type, addr, size) \
8357 (__chk_user_ptr(addr), \
8358 __access_ok((__force unsigned long)(addr), (size), get_fs()))
8359@@ -318,52 +319,6 @@ do { \
8360 extern unsigned long __copy_tofrom_user(void __user *to,
8361 const void __user *from, unsigned long size);
8362
8363-#ifndef __powerpc64__
8364-
8365-static inline unsigned long copy_from_user(void *to,
8366- const void __user *from, unsigned long n)
8367-{
8368- unsigned long over;
8369-
8370- if (access_ok(VERIFY_READ, from, n))
8371- return __copy_tofrom_user((__force void __user *)to, from, n);
8372- if ((unsigned long)from < TASK_SIZE) {
8373- over = (unsigned long)from + n - TASK_SIZE;
8374- return __copy_tofrom_user((__force void __user *)to, from,
8375- n - over) + over;
8376- }
8377- return n;
8378-}
8379-
8380-static inline unsigned long copy_to_user(void __user *to,
8381- const void *from, unsigned long n)
8382-{
8383- unsigned long over;
8384-
8385- if (access_ok(VERIFY_WRITE, to, n))
8386- return __copy_tofrom_user(to, (__force void __user *)from, n);
8387- if ((unsigned long)to < TASK_SIZE) {
8388- over = (unsigned long)to + n - TASK_SIZE;
8389- return __copy_tofrom_user(to, (__force void __user *)from,
8390- n - over) + over;
8391- }
8392- return n;
8393-}
8394-
8395-#else /* __powerpc64__ */
8396-
8397-#define __copy_in_user(to, from, size) \
8398- __copy_tofrom_user((to), (from), (size))
8399-
8400-extern unsigned long copy_from_user(void *to, const void __user *from,
8401- unsigned long n);
8402-extern unsigned long copy_to_user(void __user *to, const void *from,
8403- unsigned long n);
8404-extern unsigned long copy_in_user(void __user *to, const void __user *from,
8405- unsigned long n);
8406-
8407-#endif /* __powerpc64__ */
8408-
8409 static inline unsigned long __copy_from_user_inatomic(void *to,
8410 const void __user *from, unsigned long n)
8411 {
8412@@ -387,6 +342,10 @@ static inline unsigned long __copy_from_user_inatomic(void *to,
8413 if (ret == 0)
8414 return 0;
8415 }
8416+
8417+ if (!__builtin_constant_p(n))
8418+ check_object_size(to, n, false);
8419+
8420 return __copy_tofrom_user((__force void __user *)to, from, n);
8421 }
8422
8423@@ -413,6 +372,10 @@ static inline unsigned long __copy_to_user_inatomic(void __user *to,
8424 if (ret == 0)
8425 return 0;
8426 }
8427+
8428+ if (!__builtin_constant_p(n))
8429+ check_object_size(from, n, true);
8430+
8431 return __copy_tofrom_user(to, (__force const void __user *)from, n);
8432 }
8433
8434@@ -430,6 +393,92 @@ static inline unsigned long __copy_to_user(void __user *to,
8435 return __copy_to_user_inatomic(to, from, size);
8436 }
8437
8438+#ifndef __powerpc64__
8439+
8440+static inline unsigned long __must_check copy_from_user(void *to,
8441+ const void __user *from, unsigned long n)
8442+{
8443+ unsigned long over;
8444+
8445+ if ((long)n < 0)
8446+ return n;
8447+
8448+ if (access_ok(VERIFY_READ, from, n)) {
8449+ if (!__builtin_constant_p(n))
8450+ check_object_size(to, n, false);
8451+ return __copy_tofrom_user((__force void __user *)to, from, n);
8452+ }
8453+ if ((unsigned long)from < TASK_SIZE) {
8454+ over = (unsigned long)from + n - TASK_SIZE;
8455+ if (!__builtin_constant_p(n - over))
8456+ check_object_size(to, n - over, false);
8457+ return __copy_tofrom_user((__force void __user *)to, from,
8458+ n - over) + over;
8459+ }
8460+ return n;
8461+}
8462+
8463+static inline unsigned long __must_check copy_to_user(void __user *to,
8464+ const void *from, unsigned long n)
8465+{
8466+ unsigned long over;
8467+
8468+ if ((long)n < 0)
8469+ return n;
8470+
8471+ if (access_ok(VERIFY_WRITE, to, n)) {
8472+ if (!__builtin_constant_p(n))
8473+ check_object_size(from, n, true);
8474+ return __copy_tofrom_user(to, (__force void __user *)from, n);
8475+ }
8476+ if ((unsigned long)to < TASK_SIZE) {
8477+ over = (unsigned long)to + n - TASK_SIZE;
8478+ if (!__builtin_constant_p(n))
8479+ check_object_size(from, n - over, true);
8480+ return __copy_tofrom_user(to, (__force void __user *)from,
8481+ n - over) + over;
8482+ }
8483+ return n;
8484+}
8485+
8486+#else /* __powerpc64__ */
8487+
8488+#define __copy_in_user(to, from, size) \
8489+ __copy_tofrom_user((to), (from), (size))
8490+
8491+static inline unsigned long __must_check copy_from_user(void *to, const void __user *from, unsigned long n)
8492+{
8493+ if ((long)n < 0 || n > INT_MAX)
8494+ return n;
8495+
8496+ if (!__builtin_constant_p(n))
8497+ check_object_size(to, n, false);
8498+
8499+ if (likely(access_ok(VERIFY_READ, from, n)))
8500+ n = __copy_from_user(to, from, n);
8501+ else
8502+ memset(to, 0, n);
8503+ return n;
8504+}
8505+
8506+static inline unsigned long __must_check copy_to_user(void __user *to, const void *from, unsigned long n)
8507+{
8508+ if ((long)n < 0 || n > INT_MAX)
8509+ return n;
8510+
8511+ if (likely(access_ok(VERIFY_WRITE, to, n))) {
8512+ if (!__builtin_constant_p(n))
8513+ check_object_size(from, n, true);
8514+ n = __copy_to_user(to, from, n);
8515+ }
8516+ return n;
8517+}
8518+
8519+extern unsigned long copy_in_user(void __user *to, const void __user *from,
8520+ unsigned long n);
8521+
8522+#endif /* __powerpc64__ */
8523+
8524 extern unsigned long __clear_user(void __user *addr, unsigned long size);
8525
8526 static inline unsigned long clear_user(void __user *addr, unsigned long size)
8527diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
8528index fcc9a89..07be2bb 100644
8529--- a/arch/powerpc/kernel/Makefile
8530+++ b/arch/powerpc/kernel/Makefile
8531@@ -26,6 +26,8 @@ CFLAGS_REMOVE_ftrace.o = -pg -mno-sched-epilog
8532 CFLAGS_REMOVE_time.o = -pg -mno-sched-epilog
8533 endif
8534
8535+CFLAGS_REMOVE_prom_init.o += $(LATENT_ENTROPY_PLUGIN_CFLAGS)
8536+
8537 obj-y := cputable.o ptrace.o syscalls.o \
8538 irq.o align.o signal_32.o pmc.o vdso.o \
8539 process.o systbl.o idle.o \
8540diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
8541index c1bee3c..5b42583 100644
8542--- a/arch/powerpc/kernel/exceptions-64e.S
8543+++ b/arch/powerpc/kernel/exceptions-64e.S
8544@@ -1010,6 +1010,7 @@ storage_fault_common:
8545 std r14,_DAR(r1)
8546 std r15,_DSISR(r1)
8547 addi r3,r1,STACK_FRAME_OVERHEAD
8548+ bl .save_nvgprs
8549 mr r4,r14
8550 mr r5,r15
8551 ld r14,PACA_EXGEN+EX_R14(r13)
8552@@ -1018,8 +1019,7 @@ storage_fault_common:
8553 cmpdi r3,0
8554 bne- 1f
8555 b .ret_from_except_lite
8556-1: bl .save_nvgprs
8557- mr r5,r3
8558+1: mr r5,r3
8559 addi r3,r1,STACK_FRAME_OVERHEAD
8560 ld r4,_DAR(r1)
8561 bl .bad_page_fault
8562diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
8563index 3afd391..18f9e36 100644
8564--- a/arch/powerpc/kernel/exceptions-64s.S
8565+++ b/arch/powerpc/kernel/exceptions-64s.S
8566@@ -1587,10 +1587,10 @@ handle_page_fault:
8567 11: ld r4,_DAR(r1)
8568 ld r5,_DSISR(r1)
8569 addi r3,r1,STACK_FRAME_OVERHEAD
8570+ bl .save_nvgprs
8571 bl .do_page_fault
8572 cmpdi r3,0
8573 beq+ 12f
8574- bl .save_nvgprs
8575 mr r5,r3
8576 addi r3,r1,STACK_FRAME_OVERHEAD
8577 lwz r4,_DAR(r1)
8578diff --git a/arch/powerpc/kernel/irq.c b/arch/powerpc/kernel/irq.c
8579index ca1cd74..6f0241a 100644
8580--- a/arch/powerpc/kernel/irq.c
8581+++ b/arch/powerpc/kernel/irq.c
8582@@ -447,6 +447,8 @@ void migrate_irqs(void)
8583 }
8584 #endif
8585
8586+extern void gr_handle_kernel_exploit(void);
8587+
8588 static inline void check_stack_overflow(void)
8589 {
8590 #ifdef CONFIG_DEBUG_STACKOVERFLOW
8591@@ -459,6 +461,7 @@ static inline void check_stack_overflow(void)
8592 printk("do_IRQ: stack overflow: %ld\n",
8593 sp - sizeof(struct thread_info));
8594 dump_stack();
8595+ gr_handle_kernel_exploit();
8596 }
8597 #endif
8598 }
8599diff --git a/arch/powerpc/kernel/module_32.c b/arch/powerpc/kernel/module_32.c
8600index 6cff040..74ac5d1 100644
8601--- a/arch/powerpc/kernel/module_32.c
8602+++ b/arch/powerpc/kernel/module_32.c
8603@@ -161,7 +161,7 @@ int module_frob_arch_sections(Elf32_Ehdr *hdr,
8604 me->arch.core_plt_section = i;
8605 }
8606 if (!me->arch.core_plt_section || !me->arch.init_plt_section) {
8607- printk("Module doesn't contain .plt or .init.plt sections.\n");
8608+ printk("Module %s doesn't contain .plt or .init.plt sections.\n", me->name);
8609 return -ENOEXEC;
8610 }
8611
8612@@ -191,11 +191,16 @@ static uint32_t do_plt_call(void *location,
8613
8614 DEBUGP("Doing plt for call to 0x%x at 0x%x\n", val, (unsigned int)location);
8615 /* Init, or core PLT? */
8616- if (location >= mod->module_core
8617- && location < mod->module_core + mod->core_size)
8618+ if ((location >= mod->module_core_rx && location < mod->module_core_rx + mod->core_size_rx) ||
8619+ (location >= mod->module_core_rw && location < mod->module_core_rw + mod->core_size_rw))
8620 entry = (void *)sechdrs[mod->arch.core_plt_section].sh_addr;
8621- else
8622+ else if ((location >= mod->module_init_rx && location < mod->module_init_rx + mod->init_size_rx) ||
8623+ (location >= mod->module_init_rw && location < mod->module_init_rw + mod->init_size_rw))
8624 entry = (void *)sechdrs[mod->arch.init_plt_section].sh_addr;
8625+ else {
8626+ printk(KERN_ERR "%s: invalid R_PPC_REL24 entry found\n", mod->name);
8627+ return ~0UL;
8628+ }
8629
8630 /* Find this entry, or if that fails, the next avail. entry */
8631 while (entry->jump[0]) {
8632@@ -299,7 +304,7 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
8633 }
8634 #ifdef CONFIG_DYNAMIC_FTRACE
8635 module->arch.tramp =
8636- do_plt_call(module->module_core,
8637+ do_plt_call(module->module_core_rx,
8638 (unsigned long)ftrace_caller,
8639 sechdrs, module);
8640 #endif
8641diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
8642index 31d0215..206af70 100644
8643--- a/arch/powerpc/kernel/process.c
8644+++ b/arch/powerpc/kernel/process.c
8645@@ -1031,8 +1031,8 @@ void show_regs(struct pt_regs * regs)
8646 * Lookup NIP late so we have the best change of getting the
8647 * above info out without failing
8648 */
8649- printk("NIP ["REG"] %pS\n", regs->nip, (void *)regs->nip);
8650- printk("LR ["REG"] %pS\n", regs->link, (void *)regs->link);
8651+ printk("NIP ["REG"] %pA\n", regs->nip, (void *)regs->nip);
8652+ printk("LR ["REG"] %pA\n", regs->link, (void *)regs->link);
8653 #endif
8654 show_stack(current, (unsigned long *) regs->gpr[1]);
8655 if (!user_mode(regs))
8656@@ -1554,10 +1554,10 @@ void show_stack(struct task_struct *tsk, unsigned long *stack)
8657 newsp = stack[0];
8658 ip = stack[STACK_FRAME_LR_SAVE];
8659 if (!firstframe || ip != lr) {
8660- printk("["REG"] ["REG"] %pS", sp, ip, (void *)ip);
8661+ printk("["REG"] ["REG"] %pA", sp, ip, (void *)ip);
8662 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
8663 if ((ip == rth || ip == mrth) && curr_frame >= 0) {
8664- printk(" (%pS)",
8665+ printk(" (%pA)",
8666 (void *)current->ret_stack[curr_frame].ret);
8667 curr_frame--;
8668 }
8669@@ -1577,7 +1577,7 @@ void show_stack(struct task_struct *tsk, unsigned long *stack)
8670 struct pt_regs *regs = (struct pt_regs *)
8671 (sp + STACK_FRAME_OVERHEAD);
8672 lr = regs->link;
8673- printk("--- Exception: %lx at %pS\n LR = %pS\n",
8674+ printk("--- Exception: %lx at %pA\n LR = %pA\n",
8675 regs->trap, (void *)regs->nip, (void *)lr);
8676 firstframe = 1;
8677 }
8678@@ -1613,58 +1613,3 @@ void notrace __ppc64_runlatch_off(void)
8679 mtspr(SPRN_CTRLT, ctrl);
8680 }
8681 #endif /* CONFIG_PPC64 */
8682-
8683-unsigned long arch_align_stack(unsigned long sp)
8684-{
8685- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
8686- sp -= get_random_int() & ~PAGE_MASK;
8687- return sp & ~0xf;
8688-}
8689-
8690-static inline unsigned long brk_rnd(void)
8691-{
8692- unsigned long rnd = 0;
8693-
8694- /* 8MB for 32bit, 1GB for 64bit */
8695- if (is_32bit_task())
8696- rnd = (long)(get_random_int() % (1<<(23-PAGE_SHIFT)));
8697- else
8698- rnd = (long)(get_random_int() % (1<<(30-PAGE_SHIFT)));
8699-
8700- return rnd << PAGE_SHIFT;
8701-}
8702-
8703-unsigned long arch_randomize_brk(struct mm_struct *mm)
8704-{
8705- unsigned long base = mm->brk;
8706- unsigned long ret;
8707-
8708-#ifdef CONFIG_PPC_STD_MMU_64
8709- /*
8710- * If we are using 1TB segments and we are allowed to randomise
8711- * the heap, we can put it above 1TB so it is backed by a 1TB
8712- * segment. Otherwise the heap will be in the bottom 1TB
8713- * which always uses 256MB segments and this may result in a
8714- * performance penalty.
8715- */
8716- if (!is_32bit_task() && (mmu_highuser_ssize == MMU_SEGSIZE_1T))
8717- base = max_t(unsigned long, mm->brk, 1UL << SID_SHIFT_1T);
8718-#endif
8719-
8720- ret = PAGE_ALIGN(base + brk_rnd());
8721-
8722- if (ret < mm->brk)
8723- return mm->brk;
8724-
8725- return ret;
8726-}
8727-
8728-unsigned long randomize_et_dyn(unsigned long base)
8729-{
8730- unsigned long ret = PAGE_ALIGN(base + brk_rnd());
8731-
8732- if (ret < base)
8733- return base;
8734-
8735- return ret;
8736-}
8737diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
8738index 2e3d2bf..35df241 100644
8739--- a/arch/powerpc/kernel/ptrace.c
8740+++ b/arch/powerpc/kernel/ptrace.c
8741@@ -1762,6 +1762,10 @@ long arch_ptrace(struct task_struct *child, long request,
8742 return ret;
8743 }
8744
8745+#ifdef CONFIG_GRKERNSEC_SETXID
8746+extern void gr_delayed_cred_worker(void);
8747+#endif
8748+
8749 /*
8750 * We must return the syscall number to actually look up in the table.
8751 * This can be -1L to skip running any syscall at all.
8752@@ -1774,6 +1778,11 @@ long do_syscall_trace_enter(struct pt_regs *regs)
8753
8754 secure_computing_strict(regs->gpr[0]);
8755
8756+#ifdef CONFIG_GRKERNSEC_SETXID
8757+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
8758+ gr_delayed_cred_worker();
8759+#endif
8760+
8761 if (test_thread_flag(TIF_SYSCALL_TRACE) &&
8762 tracehook_report_syscall_entry(regs))
8763 /*
8764@@ -1808,6 +1817,11 @@ void do_syscall_trace_leave(struct pt_regs *regs)
8765 {
8766 int step;
8767
8768+#ifdef CONFIG_GRKERNSEC_SETXID
8769+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
8770+ gr_delayed_cred_worker();
8771+#endif
8772+
8773 audit_syscall_exit(regs);
8774
8775 if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
8776diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
8777index 4e47db6..6dcc96e 100644
8778--- a/arch/powerpc/kernel/signal_32.c
8779+++ b/arch/powerpc/kernel/signal_32.c
8780@@ -1013,7 +1013,7 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
8781 /* Save user registers on the stack */
8782 frame = &rt_sf->uc.uc_mcontext;
8783 addr = frame;
8784- if (vdso32_rt_sigtramp && current->mm->context.vdso_base) {
8785+ if (vdso32_rt_sigtramp && current->mm->context.vdso_base != ~0UL) {
8786 sigret = 0;
8787 tramp = current->mm->context.vdso_base + vdso32_rt_sigtramp;
8788 } else {
8789diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
8790index d501dc4..e5a0de0 100644
8791--- a/arch/powerpc/kernel/signal_64.c
8792+++ b/arch/powerpc/kernel/signal_64.c
8793@@ -760,7 +760,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info,
8794 current->thread.fp_state.fpscr = 0;
8795
8796 /* Set up to return from userspace. */
8797- if (vdso64_rt_sigtramp && current->mm->context.vdso_base) {
8798+ if (vdso64_rt_sigtramp && current->mm->context.vdso_base != ~0UL) {
8799 regs->link = current->mm->context.vdso_base + vdso64_rt_sigtramp;
8800 } else {
8801 err |= setup_trampoline(__NR_rt_sigreturn, &frame->tramp[0]);
8802diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
8803index 1bd7ca2..9b78c2f 100644
8804--- a/arch/powerpc/kernel/traps.c
8805+++ b/arch/powerpc/kernel/traps.c
8806@@ -142,6 +142,8 @@ static unsigned __kprobes long oops_begin(struct pt_regs *regs)
8807 return flags;
8808 }
8809
8810+extern void gr_handle_kernel_exploit(void);
8811+
8812 static void __kprobes oops_end(unsigned long flags, struct pt_regs *regs,
8813 int signr)
8814 {
8815@@ -191,6 +193,9 @@ static void __kprobes oops_end(unsigned long flags, struct pt_regs *regs,
8816 panic("Fatal exception in interrupt");
8817 if (panic_on_oops)
8818 panic("Fatal exception");
8819+
8820+ gr_handle_kernel_exploit();
8821+
8822 do_exit(signr);
8823 }
8824
8825diff --git a/arch/powerpc/kernel/vdso.c b/arch/powerpc/kernel/vdso.c
8826index ce74c33..0803371 100644
8827--- a/arch/powerpc/kernel/vdso.c
8828+++ b/arch/powerpc/kernel/vdso.c
8829@@ -35,6 +35,7 @@
8830 #include <asm/vdso.h>
8831 #include <asm/vdso_datapage.h>
8832 #include <asm/setup.h>
8833+#include <asm/mman.h>
8834
8835 #undef DEBUG
8836
8837@@ -221,7 +222,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
8838 vdso_base = VDSO32_MBASE;
8839 #endif
8840
8841- current->mm->context.vdso_base = 0;
8842+ current->mm->context.vdso_base = ~0UL;
8843
8844 /* vDSO has a problem and was disabled, just don't "enable" it for the
8845 * process
8846@@ -241,7 +242,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
8847 vdso_base = get_unmapped_area(NULL, vdso_base,
8848 (vdso_pages << PAGE_SHIFT) +
8849 ((VDSO_ALIGNMENT - 1) & PAGE_MASK),
8850- 0, 0);
8851+ 0, MAP_PRIVATE | MAP_EXECUTABLE);
8852 if (IS_ERR_VALUE(vdso_base)) {
8853 rc = vdso_base;
8854 goto fail_mmapsem;
8855diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
8856index 3cf541a..ab2d825 100644
8857--- a/arch/powerpc/kvm/powerpc.c
8858+++ b/arch/powerpc/kvm/powerpc.c
8859@@ -1153,7 +1153,7 @@ void kvmppc_init_lpid(unsigned long nr_lpids_param)
8860 }
8861 EXPORT_SYMBOL_GPL(kvmppc_init_lpid);
8862
8863-int kvm_arch_init(void *opaque)
8864+int kvm_arch_init(const void *opaque)
8865 {
8866 return 0;
8867 }
8868diff --git a/arch/powerpc/lib/usercopy_64.c b/arch/powerpc/lib/usercopy_64.c
8869index 5eea6f3..5d10396 100644
8870--- a/arch/powerpc/lib/usercopy_64.c
8871+++ b/arch/powerpc/lib/usercopy_64.c
8872@@ -9,22 +9,6 @@
8873 #include <linux/module.h>
8874 #include <asm/uaccess.h>
8875
8876-unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
8877-{
8878- if (likely(access_ok(VERIFY_READ, from, n)))
8879- n = __copy_from_user(to, from, n);
8880- else
8881- memset(to, 0, n);
8882- return n;
8883-}
8884-
8885-unsigned long copy_to_user(void __user *to, const void *from, unsigned long n)
8886-{
8887- if (likely(access_ok(VERIFY_WRITE, to, n)))
8888- n = __copy_to_user(to, from, n);
8889- return n;
8890-}
8891-
8892 unsigned long copy_in_user(void __user *to, const void __user *from,
8893 unsigned long n)
8894 {
8895@@ -35,7 +19,5 @@ unsigned long copy_in_user(void __user *to, const void __user *from,
8896 return n;
8897 }
8898
8899-EXPORT_SYMBOL(copy_from_user);
8900-EXPORT_SYMBOL(copy_to_user);
8901 EXPORT_SYMBOL(copy_in_user);
8902
8903diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
8904index 51ab9e7..7d3c78b 100644
8905--- a/arch/powerpc/mm/fault.c
8906+++ b/arch/powerpc/mm/fault.c
8907@@ -33,6 +33,10 @@
8908 #include <linux/magic.h>
8909 #include <linux/ratelimit.h>
8910 #include <linux/context_tracking.h>
8911+#include <linux/slab.h>
8912+#include <linux/pagemap.h>
8913+#include <linux/compiler.h>
8914+#include <linux/unistd.h>
8915
8916 #include <asm/firmware.h>
8917 #include <asm/page.h>
8918@@ -69,6 +73,33 @@ static inline int notify_page_fault(struct pt_regs *regs)
8919 }
8920 #endif
8921
8922+#ifdef CONFIG_PAX_PAGEEXEC
8923+/*
8924+ * PaX: decide what to do with offenders (regs->nip = fault address)
8925+ *
8926+ * returns 1 when task should be killed
8927+ */
8928+static int pax_handle_fetch_fault(struct pt_regs *regs)
8929+{
8930+ return 1;
8931+}
8932+
8933+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
8934+{
8935+ unsigned long i;
8936+
8937+ printk(KERN_ERR "PAX: bytes at PC: ");
8938+ for (i = 0; i < 5; i++) {
8939+ unsigned int c;
8940+ if (get_user(c, (unsigned int __user *)pc+i))
8941+ printk(KERN_CONT "???????? ");
8942+ else
8943+ printk(KERN_CONT "%08x ", c);
8944+ }
8945+ printk("\n");
8946+}
8947+#endif
8948+
8949 /*
8950 * Check whether the instruction at regs->nip is a store using
8951 * an update addressing form which will update r1.
8952@@ -216,7 +247,7 @@ int __kprobes do_page_fault(struct pt_regs *regs, unsigned long address,
8953 * indicate errors in DSISR but can validly be set in SRR1.
8954 */
8955 if (trap == 0x400)
8956- error_code &= 0x48200000;
8957+ error_code &= 0x58200000;
8958 else
8959 is_write = error_code & DSISR_ISSTORE;
8960 #else
8961@@ -378,7 +409,7 @@ good_area:
8962 * "undefined". Of those that can be set, this is the only
8963 * one which seems bad.
8964 */
8965- if (error_code & 0x10000000)
8966+ if (error_code & DSISR_GUARDED)
8967 /* Guarded storage error. */
8968 goto bad_area;
8969 #endif /* CONFIG_8xx */
8970@@ -393,7 +424,7 @@ good_area:
8971 * processors use the same I/D cache coherency mechanism
8972 * as embedded.
8973 */
8974- if (error_code & DSISR_PROTFAULT)
8975+ if (error_code & (DSISR_PROTFAULT | DSISR_GUARDED))
8976 goto bad_area;
8977 #endif /* CONFIG_PPC_STD_MMU */
8978
8979@@ -483,6 +514,23 @@ bad_area:
8980 bad_area_nosemaphore:
8981 /* User mode accesses cause a SIGSEGV */
8982 if (user_mode(regs)) {
8983+
8984+#ifdef CONFIG_PAX_PAGEEXEC
8985+ if (mm->pax_flags & MF_PAX_PAGEEXEC) {
8986+#ifdef CONFIG_PPC_STD_MMU
8987+ if (is_exec && (error_code & (DSISR_PROTFAULT | DSISR_GUARDED))) {
8988+#else
8989+ if (is_exec && regs->nip == address) {
8990+#endif
8991+ switch (pax_handle_fetch_fault(regs)) {
8992+ }
8993+
8994+ pax_report_fault(regs, (void *)regs->nip, (void *)regs->gpr[PT_R1]);
8995+ do_group_exit(SIGKILL);
8996+ }
8997+ }
8998+#endif
8999+
9000 _exception(SIGSEGV, regs, code, address);
9001 goto bail;
9002 }
9003diff --git a/arch/powerpc/mm/mmap.c b/arch/powerpc/mm/mmap.c
9004index cb8bdbe..cde4bc7 100644
9005--- a/arch/powerpc/mm/mmap.c
9006+++ b/arch/powerpc/mm/mmap.c
9007@@ -53,10 +53,14 @@ static inline int mmap_is_legacy(void)
9008 return sysctl_legacy_va_layout;
9009 }
9010
9011-static unsigned long mmap_rnd(void)
9012+static unsigned long mmap_rnd(struct mm_struct *mm)
9013 {
9014 unsigned long rnd = 0;
9015
9016+#ifdef CONFIG_PAX_RANDMMAP
9017+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
9018+#endif
9019+
9020 if (current->flags & PF_RANDOMIZE) {
9021 /* 8MB for 32bit, 1GB for 64bit */
9022 if (is_32bit_task())
9023@@ -67,7 +71,7 @@ static unsigned long mmap_rnd(void)
9024 return rnd << PAGE_SHIFT;
9025 }
9026
9027-static inline unsigned long mmap_base(void)
9028+static inline unsigned long mmap_base(struct mm_struct *mm)
9029 {
9030 unsigned long gap = rlimit(RLIMIT_STACK);
9031
9032@@ -76,7 +80,7 @@ static inline unsigned long mmap_base(void)
9033 else if (gap > MAX_GAP)
9034 gap = MAX_GAP;
9035
9036- return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd());
9037+ return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd(mm));
9038 }
9039
9040 /*
9041@@ -91,9 +95,21 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
9042 */
9043 if (mmap_is_legacy()) {
9044 mm->mmap_base = TASK_UNMAPPED_BASE;
9045+
9046+#ifdef CONFIG_PAX_RANDMMAP
9047+ if (mm->pax_flags & MF_PAX_RANDMMAP)
9048+ mm->mmap_base += mm->delta_mmap;
9049+#endif
9050+
9051 mm->get_unmapped_area = arch_get_unmapped_area;
9052 } else {
9053- mm->mmap_base = mmap_base();
9054+ mm->mmap_base = mmap_base(mm);
9055+
9056+#ifdef CONFIG_PAX_RANDMMAP
9057+ if (mm->pax_flags & MF_PAX_RANDMMAP)
9058+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
9059+#endif
9060+
9061 mm->get_unmapped_area = arch_get_unmapped_area_topdown;
9062 }
9063 }
9064diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c
9065index b0c75cc..ef7fb93 100644
9066--- a/arch/powerpc/mm/slice.c
9067+++ b/arch/powerpc/mm/slice.c
9068@@ -103,7 +103,7 @@ static int slice_area_is_free(struct mm_struct *mm, unsigned long addr,
9069 if ((mm->task_size - len) < addr)
9070 return 0;
9071 vma = find_vma(mm, addr);
9072- return (!vma || (addr + len) <= vma->vm_start);
9073+ return check_heap_stack_gap(vma, addr, len, 0);
9074 }
9075
9076 static int slice_low_has_vma(struct mm_struct *mm, unsigned long slice)
9077@@ -277,6 +277,12 @@ static unsigned long slice_find_area_bottomup(struct mm_struct *mm,
9078 info.align_offset = 0;
9079
9080 addr = TASK_UNMAPPED_BASE;
9081+
9082+#ifdef CONFIG_PAX_RANDMMAP
9083+ if (mm->pax_flags & MF_PAX_RANDMMAP)
9084+ addr += mm->delta_mmap;
9085+#endif
9086+
9087 while (addr < TASK_SIZE) {
9088 info.low_limit = addr;
9089 if (!slice_scan_available(addr, available, 1, &addr))
9090@@ -410,6 +416,11 @@ unsigned long slice_get_unmapped_area(unsigned long addr, unsigned long len,
9091 if (fixed && addr > (mm->task_size - len))
9092 return -ENOMEM;
9093
9094+#ifdef CONFIG_PAX_RANDMMAP
9095+ if (!fixed && (mm->pax_flags & MF_PAX_RANDMMAP))
9096+ addr = 0;
9097+#endif
9098+
9099 /* If hint, make sure it matches our alignment restrictions */
9100 if (!fixed && addr) {
9101 addr = _ALIGN_UP(addr, 1ul << pshift);
9102diff --git a/arch/powerpc/platforms/cell/celleb_scc_pciex.c b/arch/powerpc/platforms/cell/celleb_scc_pciex.c
9103index 4278acf..67fd0e6 100644
9104--- a/arch/powerpc/platforms/cell/celleb_scc_pciex.c
9105+++ b/arch/powerpc/platforms/cell/celleb_scc_pciex.c
9106@@ -400,8 +400,8 @@ static int scc_pciex_write_config(struct pci_bus *bus, unsigned int devfn,
9107 }
9108
9109 static struct pci_ops scc_pciex_pci_ops = {
9110- scc_pciex_read_config,
9111- scc_pciex_write_config,
9112+ .read = scc_pciex_read_config,
9113+ .write = scc_pciex_write_config,
9114 };
9115
9116 static void pciex_clear_intr_all(unsigned int __iomem *base)
9117diff --git a/arch/powerpc/platforms/cell/spufs/file.c b/arch/powerpc/platforms/cell/spufs/file.c
9118index 9098692..3d54cd1 100644
9119--- a/arch/powerpc/platforms/cell/spufs/file.c
9120+++ b/arch/powerpc/platforms/cell/spufs/file.c
9121@@ -280,9 +280,9 @@ spufs_mem_mmap_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
9122 return VM_FAULT_NOPAGE;
9123 }
9124
9125-static int spufs_mem_mmap_access(struct vm_area_struct *vma,
9126+static ssize_t spufs_mem_mmap_access(struct vm_area_struct *vma,
9127 unsigned long address,
9128- void *buf, int len, int write)
9129+ void *buf, size_t len, int write)
9130 {
9131 struct spu_context *ctx = vma->vm_file->private_data;
9132 unsigned long offset = address - vma->vm_start;
9133diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h
9134index 1d47061..0714963 100644
9135--- a/arch/s390/include/asm/atomic.h
9136+++ b/arch/s390/include/asm/atomic.h
9137@@ -412,6 +412,16 @@ static inline long long atomic64_dec_if_positive(atomic64_t *v)
9138 #define atomic64_dec_and_test(_v) (atomic64_sub_return(1, _v) == 0)
9139 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
9140
9141+#define atomic64_read_unchecked(v) atomic64_read(v)
9142+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i))
9143+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v))
9144+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v))
9145+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v))
9146+#define atomic64_inc_unchecked(v) atomic64_inc(v)
9147+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v)
9148+#define atomic64_dec_unchecked(v) atomic64_dec(v)
9149+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n))
9150+
9151 #define smp_mb__before_atomic_dec() smp_mb()
9152 #define smp_mb__after_atomic_dec() smp_mb()
9153 #define smp_mb__before_atomic_inc() smp_mb()
9154diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h
9155index 578680f..0eb3b11 100644
9156--- a/arch/s390/include/asm/barrier.h
9157+++ b/arch/s390/include/asm/barrier.h
9158@@ -36,7 +36,7 @@
9159 do { \
9160 compiletime_assert_atomic_type(*p); \
9161 barrier(); \
9162- ACCESS_ONCE(*p) = (v); \
9163+ ACCESS_ONCE_RW(*p) = (v); \
9164 } while (0)
9165
9166 #define smp_load_acquire(p) \
9167diff --git a/arch/s390/include/asm/cache.h b/arch/s390/include/asm/cache.h
9168index 4d7ccac..d03d0ad 100644
9169--- a/arch/s390/include/asm/cache.h
9170+++ b/arch/s390/include/asm/cache.h
9171@@ -9,8 +9,10 @@
9172 #ifndef __ARCH_S390_CACHE_H
9173 #define __ARCH_S390_CACHE_H
9174
9175-#define L1_CACHE_BYTES 256
9176+#include <linux/const.h>
9177+
9178 #define L1_CACHE_SHIFT 8
9179+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
9180 #define NET_SKB_PAD 32
9181
9182 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
9183diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
9184index 78f4f87..598ce39 100644
9185--- a/arch/s390/include/asm/elf.h
9186+++ b/arch/s390/include/asm/elf.h
9187@@ -162,8 +162,14 @@ extern unsigned int vdso_enabled;
9188 the loader. We need to make sure that it is out of the way of the program
9189 that it will "exec", and that there is sufficient room for the brk. */
9190
9191-extern unsigned long randomize_et_dyn(unsigned long base);
9192-#define ELF_ET_DYN_BASE (randomize_et_dyn(STACK_TOP / 3 * 2))
9193+#define ELF_ET_DYN_BASE (STACK_TOP / 3 * 2)
9194+
9195+#ifdef CONFIG_PAX_ASLR
9196+#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_31BIT) ? 0x10000UL : 0x80000000UL)
9197+
9198+#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_31BIT) ? 15 : 26)
9199+#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_31BIT) ? 15 : 26)
9200+#endif
9201
9202 /* This yields a mask that user programs can use to figure out what
9203 instruction set this CPU supports. */
9204@@ -222,9 +228,6 @@ struct linux_binprm;
9205 #define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1
9206 int arch_setup_additional_pages(struct linux_binprm *, int);
9207
9208-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
9209-#define arch_randomize_brk arch_randomize_brk
9210-
9211 void *fill_cpu_elf_notes(void *ptr, struct save_area *sa);
9212
9213 #endif
9214diff --git a/arch/s390/include/asm/exec.h b/arch/s390/include/asm/exec.h
9215index c4a93d6..4d2a9b4 100644
9216--- a/arch/s390/include/asm/exec.h
9217+++ b/arch/s390/include/asm/exec.h
9218@@ -7,6 +7,6 @@
9219 #ifndef __ASM_EXEC_H
9220 #define __ASM_EXEC_H
9221
9222-extern unsigned long arch_align_stack(unsigned long sp);
9223+#define arch_align_stack(x) ((x) & ~0xfUL)
9224
9225 #endif /* __ASM_EXEC_H */
9226diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h
9227index 1be64a1..086839d1 100644
9228--- a/arch/s390/include/asm/uaccess.h
9229+++ b/arch/s390/include/asm/uaccess.h
9230@@ -59,6 +59,7 @@ static inline int __range_ok(unsigned long addr, unsigned long size)
9231 __range_ok((unsigned long)(addr), (size)); \
9232 })
9233
9234+#define access_ok_noprefault(type, addr, size) access_ok((type), (addr), (size))
9235 #define access_ok(type, addr, size) __access_ok(addr, size)
9236
9237 /*
9238@@ -245,6 +246,10 @@ static inline unsigned long __must_check
9239 copy_to_user(void __user *to, const void *from, unsigned long n)
9240 {
9241 might_fault();
9242+
9243+ if ((long)n < 0)
9244+ return n;
9245+
9246 return __copy_to_user(to, from, n);
9247 }
9248
9249@@ -273,10 +278,14 @@ __compiletime_warning("copy_from_user() buffer size is not provably correct")
9250 static inline unsigned long __must_check
9251 copy_from_user(void *to, const void __user *from, unsigned long n)
9252 {
9253- unsigned int sz = __compiletime_object_size(to);
9254+ size_t sz = __compiletime_object_size(to);
9255
9256 might_fault();
9257- if (unlikely(sz != -1 && sz < n)) {
9258+
9259+ if ((long)n < 0)
9260+ return n;
9261+
9262+ if (unlikely(sz != (size_t)-1 && sz < n)) {
9263 copy_from_user_overflow();
9264 return n;
9265 }
9266diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
9267index b89b591..fd9609d 100644
9268--- a/arch/s390/kernel/module.c
9269+++ b/arch/s390/kernel/module.c
9270@@ -169,11 +169,11 @@ int module_frob_arch_sections(Elf_Ehdr *hdr, Elf_Shdr *sechdrs,
9271
9272 /* Increase core size by size of got & plt and set start
9273 offsets for got and plt. */
9274- me->core_size = ALIGN(me->core_size, 4);
9275- me->arch.got_offset = me->core_size;
9276- me->core_size += me->arch.got_size;
9277- me->arch.plt_offset = me->core_size;
9278- me->core_size += me->arch.plt_size;
9279+ me->core_size_rw = ALIGN(me->core_size_rw, 4);
9280+ me->arch.got_offset = me->core_size_rw;
9281+ me->core_size_rw += me->arch.got_size;
9282+ me->arch.plt_offset = me->core_size_rx;
9283+ me->core_size_rx += me->arch.plt_size;
9284 return 0;
9285 }
9286
9287@@ -289,7 +289,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
9288 if (info->got_initialized == 0) {
9289 Elf_Addr *gotent;
9290
9291- gotent = me->module_core + me->arch.got_offset +
9292+ gotent = me->module_core_rw + me->arch.got_offset +
9293 info->got_offset;
9294 *gotent = val;
9295 info->got_initialized = 1;
9296@@ -312,7 +312,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
9297 rc = apply_rela_bits(loc, val, 0, 64, 0);
9298 else if (r_type == R_390_GOTENT ||
9299 r_type == R_390_GOTPLTENT) {
9300- val += (Elf_Addr) me->module_core - loc;
9301+ val += (Elf_Addr) me->module_core_rw - loc;
9302 rc = apply_rela_bits(loc, val, 1, 32, 1);
9303 }
9304 break;
9305@@ -325,7 +325,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
9306 case R_390_PLTOFF64: /* 16 bit offset from GOT to PLT. */
9307 if (info->plt_initialized == 0) {
9308 unsigned int *ip;
9309- ip = me->module_core + me->arch.plt_offset +
9310+ ip = me->module_core_rx + me->arch.plt_offset +
9311 info->plt_offset;
9312 #ifndef CONFIG_64BIT
9313 ip[0] = 0x0d105810; /* basr 1,0; l 1,6(1); br 1 */
9314@@ -350,7 +350,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
9315 val - loc + 0xffffUL < 0x1ffffeUL) ||
9316 (r_type == R_390_PLT32DBL &&
9317 val - loc + 0xffffffffULL < 0x1fffffffeULL)))
9318- val = (Elf_Addr) me->module_core +
9319+ val = (Elf_Addr) me->module_core_rx +
9320 me->arch.plt_offset +
9321 info->plt_offset;
9322 val += rela->r_addend - loc;
9323@@ -372,7 +372,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
9324 case R_390_GOTOFF32: /* 32 bit offset to GOT. */
9325 case R_390_GOTOFF64: /* 64 bit offset to GOT. */
9326 val = val + rela->r_addend -
9327- ((Elf_Addr) me->module_core + me->arch.got_offset);
9328+ ((Elf_Addr) me->module_core_rw + me->arch.got_offset);
9329 if (r_type == R_390_GOTOFF16)
9330 rc = apply_rela_bits(loc, val, 0, 16, 0);
9331 else if (r_type == R_390_GOTOFF32)
9332@@ -382,7 +382,7 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab,
9333 break;
9334 case R_390_GOTPC: /* 32 bit PC relative offset to GOT. */
9335 case R_390_GOTPCDBL: /* 32 bit PC rel. off. to GOT shifted by 1. */
9336- val = (Elf_Addr) me->module_core + me->arch.got_offset +
9337+ val = (Elf_Addr) me->module_core_rw + me->arch.got_offset +
9338 rela->r_addend - loc;
9339 if (r_type == R_390_GOTPC)
9340 rc = apply_rela_bits(loc, val, 1, 32, 0);
9341diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
9342index dd14532..1dfc145 100644
9343--- a/arch/s390/kernel/process.c
9344+++ b/arch/s390/kernel/process.c
9345@@ -242,37 +242,3 @@ unsigned long get_wchan(struct task_struct *p)
9346 }
9347 return 0;
9348 }
9349-
9350-unsigned long arch_align_stack(unsigned long sp)
9351-{
9352- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
9353- sp -= get_random_int() & ~PAGE_MASK;
9354- return sp & ~0xf;
9355-}
9356-
9357-static inline unsigned long brk_rnd(void)
9358-{
9359- /* 8MB for 32bit, 1GB for 64bit */
9360- if (is_32bit_task())
9361- return (get_random_int() & 0x7ffUL) << PAGE_SHIFT;
9362- else
9363- return (get_random_int() & 0x3ffffUL) << PAGE_SHIFT;
9364-}
9365-
9366-unsigned long arch_randomize_brk(struct mm_struct *mm)
9367-{
9368- unsigned long ret;
9369-
9370- ret = PAGE_ALIGN(mm->brk + brk_rnd());
9371- return (ret > mm->brk) ? ret : mm->brk;
9372-}
9373-
9374-unsigned long randomize_et_dyn(unsigned long base)
9375-{
9376- unsigned long ret;
9377-
9378- if (!(current->flags & PF_RANDOMIZE))
9379- return base;
9380- ret = PAGE_ALIGN(base + brk_rnd());
9381- return (ret > base) ? ret : base;
9382-}
9383diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
9384index 9b436c2..54fbf0a 100644
9385--- a/arch/s390/mm/mmap.c
9386+++ b/arch/s390/mm/mmap.c
9387@@ -95,9 +95,21 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
9388 */
9389 if (mmap_is_legacy()) {
9390 mm->mmap_base = mmap_base_legacy();
9391+
9392+#ifdef CONFIG_PAX_RANDMMAP
9393+ if (mm->pax_flags & MF_PAX_RANDMMAP)
9394+ mm->mmap_base += mm->delta_mmap;
9395+#endif
9396+
9397 mm->get_unmapped_area = arch_get_unmapped_area;
9398 } else {
9399 mm->mmap_base = mmap_base();
9400+
9401+#ifdef CONFIG_PAX_RANDMMAP
9402+ if (mm->pax_flags & MF_PAX_RANDMMAP)
9403+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
9404+#endif
9405+
9406 mm->get_unmapped_area = arch_get_unmapped_area_topdown;
9407 }
9408 }
9409@@ -170,9 +182,21 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
9410 */
9411 if (mmap_is_legacy()) {
9412 mm->mmap_base = mmap_base_legacy();
9413+
9414+#ifdef CONFIG_PAX_RANDMMAP
9415+ if (mm->pax_flags & MF_PAX_RANDMMAP)
9416+ mm->mmap_base += mm->delta_mmap;
9417+#endif
9418+
9419 mm->get_unmapped_area = s390_get_unmapped_area;
9420 } else {
9421 mm->mmap_base = mmap_base();
9422+
9423+#ifdef CONFIG_PAX_RANDMMAP
9424+ if (mm->pax_flags & MF_PAX_RANDMMAP)
9425+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
9426+#endif
9427+
9428 mm->get_unmapped_area = s390_get_unmapped_area_topdown;
9429 }
9430 }
9431diff --git a/arch/score/include/asm/cache.h b/arch/score/include/asm/cache.h
9432index ae3d59f..f65f075 100644
9433--- a/arch/score/include/asm/cache.h
9434+++ b/arch/score/include/asm/cache.h
9435@@ -1,7 +1,9 @@
9436 #ifndef _ASM_SCORE_CACHE_H
9437 #define _ASM_SCORE_CACHE_H
9438
9439+#include <linux/const.h>
9440+
9441 #define L1_CACHE_SHIFT 4
9442-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
9443+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
9444
9445 #endif /* _ASM_SCORE_CACHE_H */
9446diff --git a/arch/score/include/asm/exec.h b/arch/score/include/asm/exec.h
9447index f9f3cd5..58ff438 100644
9448--- a/arch/score/include/asm/exec.h
9449+++ b/arch/score/include/asm/exec.h
9450@@ -1,6 +1,6 @@
9451 #ifndef _ASM_SCORE_EXEC_H
9452 #define _ASM_SCORE_EXEC_H
9453
9454-extern unsigned long arch_align_stack(unsigned long sp);
9455+#define arch_align_stack(x) (x)
9456
9457 #endif /* _ASM_SCORE_EXEC_H */
9458diff --git a/arch/score/kernel/process.c b/arch/score/kernel/process.c
9459index a1519ad3..e8ac1ff 100644
9460--- a/arch/score/kernel/process.c
9461+++ b/arch/score/kernel/process.c
9462@@ -116,8 +116,3 @@ unsigned long get_wchan(struct task_struct *task)
9463
9464 return task_pt_regs(task)->cp0_epc;
9465 }
9466-
9467-unsigned long arch_align_stack(unsigned long sp)
9468-{
9469- return sp;
9470-}
9471diff --git a/arch/sh/include/asm/cache.h b/arch/sh/include/asm/cache.h
9472index ef9e555..331bd29 100644
9473--- a/arch/sh/include/asm/cache.h
9474+++ b/arch/sh/include/asm/cache.h
9475@@ -9,10 +9,11 @@
9476 #define __ASM_SH_CACHE_H
9477 #ifdef __KERNEL__
9478
9479+#include <linux/const.h>
9480 #include <linux/init.h>
9481 #include <cpu/cache.h>
9482
9483-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
9484+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
9485
9486 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
9487
9488diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c
9489index 6777177..cb5e44f 100644
9490--- a/arch/sh/mm/mmap.c
9491+++ b/arch/sh/mm/mmap.c
9492@@ -36,6 +36,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
9493 struct mm_struct *mm = current->mm;
9494 struct vm_area_struct *vma;
9495 int do_colour_align;
9496+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
9497 struct vm_unmapped_area_info info;
9498
9499 if (flags & MAP_FIXED) {
9500@@ -55,6 +56,10 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
9501 if (filp || (flags & MAP_SHARED))
9502 do_colour_align = 1;
9503
9504+#ifdef CONFIG_PAX_RANDMMAP
9505+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
9506+#endif
9507+
9508 if (addr) {
9509 if (do_colour_align)
9510 addr = COLOUR_ALIGN(addr, pgoff);
9511@@ -62,14 +67,13 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
9512 addr = PAGE_ALIGN(addr);
9513
9514 vma = find_vma(mm, addr);
9515- if (TASK_SIZE - len >= addr &&
9516- (!vma || addr + len <= vma->vm_start))
9517+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
9518 return addr;
9519 }
9520
9521 info.flags = 0;
9522 info.length = len;
9523- info.low_limit = TASK_UNMAPPED_BASE;
9524+ info.low_limit = mm->mmap_base;
9525 info.high_limit = TASK_SIZE;
9526 info.align_mask = do_colour_align ? (PAGE_MASK & shm_align_mask) : 0;
9527 info.align_offset = pgoff << PAGE_SHIFT;
9528@@ -85,6 +89,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
9529 struct mm_struct *mm = current->mm;
9530 unsigned long addr = addr0;
9531 int do_colour_align;
9532+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
9533 struct vm_unmapped_area_info info;
9534
9535 if (flags & MAP_FIXED) {
9536@@ -104,6 +109,10 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
9537 if (filp || (flags & MAP_SHARED))
9538 do_colour_align = 1;
9539
9540+#ifdef CONFIG_PAX_RANDMMAP
9541+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
9542+#endif
9543+
9544 /* requesting a specific address */
9545 if (addr) {
9546 if (do_colour_align)
9547@@ -112,8 +121,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
9548 addr = PAGE_ALIGN(addr);
9549
9550 vma = find_vma(mm, addr);
9551- if (TASK_SIZE - len >= addr &&
9552- (!vma || addr + len <= vma->vm_start))
9553+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
9554 return addr;
9555 }
9556
9557@@ -135,6 +143,12 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
9558 VM_BUG_ON(addr != -ENOMEM);
9559 info.flags = 0;
9560 info.low_limit = TASK_UNMAPPED_BASE;
9561+
9562+#ifdef CONFIG_PAX_RANDMMAP
9563+ if (mm->pax_flags & MF_PAX_RANDMMAP)
9564+ info.low_limit += mm->delta_mmap;
9565+#endif
9566+
9567 info.high_limit = TASK_SIZE;
9568 addr = vm_unmapped_area(&info);
9569 }
9570diff --git a/arch/sparc/include/asm/atomic_64.h b/arch/sparc/include/asm/atomic_64.h
9571index be56a24..443328f 100644
9572--- a/arch/sparc/include/asm/atomic_64.h
9573+++ b/arch/sparc/include/asm/atomic_64.h
9574@@ -14,18 +14,40 @@
9575 #define ATOMIC64_INIT(i) { (i) }
9576
9577 #define atomic_read(v) (*(volatile int *)&(v)->counter)
9578+static inline int atomic_read_unchecked(const atomic_unchecked_t *v)
9579+{
9580+ return v->counter;
9581+}
9582 #define atomic64_read(v) (*(volatile long *)&(v)->counter)
9583+static inline long atomic64_read_unchecked(const atomic64_unchecked_t *v)
9584+{
9585+ return v->counter;
9586+}
9587
9588 #define atomic_set(v, i) (((v)->counter) = i)
9589+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i)
9590+{
9591+ v->counter = i;
9592+}
9593 #define atomic64_set(v, i) (((v)->counter) = i)
9594+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i)
9595+{
9596+ v->counter = i;
9597+}
9598
9599 extern void atomic_add(int, atomic_t *);
9600+extern void atomic_add_unchecked(int, atomic_unchecked_t *);
9601 extern void atomic64_add(long, atomic64_t *);
9602+extern void atomic64_add_unchecked(long, atomic64_unchecked_t *);
9603 extern void atomic_sub(int, atomic_t *);
9604+extern void atomic_sub_unchecked(int, atomic_unchecked_t *);
9605 extern void atomic64_sub(long, atomic64_t *);
9606+extern void atomic64_sub_unchecked(long, atomic64_unchecked_t *);
9607
9608 extern int atomic_add_ret(int, atomic_t *);
9609+extern int atomic_add_ret_unchecked(int, atomic_unchecked_t *);
9610 extern long atomic64_add_ret(long, atomic64_t *);
9611+extern long atomic64_add_ret_unchecked(long, atomic64_unchecked_t *);
9612 extern int atomic_sub_ret(int, atomic_t *);
9613 extern long atomic64_sub_ret(long, atomic64_t *);
9614
9615@@ -33,13 +55,29 @@ extern long atomic64_sub_ret(long, atomic64_t *);
9616 #define atomic64_dec_return(v) atomic64_sub_ret(1, v)
9617
9618 #define atomic_inc_return(v) atomic_add_ret(1, v)
9619+static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v)
9620+{
9621+ return atomic_add_ret_unchecked(1, v);
9622+}
9623 #define atomic64_inc_return(v) atomic64_add_ret(1, v)
9624+static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v)
9625+{
9626+ return atomic64_add_ret_unchecked(1, v);
9627+}
9628
9629 #define atomic_sub_return(i, v) atomic_sub_ret(i, v)
9630 #define atomic64_sub_return(i, v) atomic64_sub_ret(i, v)
9631
9632 #define atomic_add_return(i, v) atomic_add_ret(i, v)
9633+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
9634+{
9635+ return atomic_add_ret_unchecked(i, v);
9636+}
9637 #define atomic64_add_return(i, v) atomic64_add_ret(i, v)
9638+static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v)
9639+{
9640+ return atomic64_add_ret_unchecked(i, v);
9641+}
9642
9643 /*
9644 * atomic_inc_and_test - increment and test
9645@@ -50,6 +88,10 @@ extern long atomic64_sub_ret(long, atomic64_t *);
9646 * other cases.
9647 */
9648 #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0)
9649+static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v)
9650+{
9651+ return atomic_inc_return_unchecked(v) == 0;
9652+}
9653 #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0)
9654
9655 #define atomic_sub_and_test(i, v) (atomic_sub_ret(i, v) == 0)
9656@@ -59,25 +101,60 @@ extern long atomic64_sub_ret(long, atomic64_t *);
9657 #define atomic64_dec_and_test(v) (atomic64_sub_ret(1, v) == 0)
9658
9659 #define atomic_inc(v) atomic_add(1, v)
9660+static inline void atomic_inc_unchecked(atomic_unchecked_t *v)
9661+{
9662+ atomic_add_unchecked(1, v);
9663+}
9664 #define atomic64_inc(v) atomic64_add(1, v)
9665+static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v)
9666+{
9667+ atomic64_add_unchecked(1, v);
9668+}
9669
9670 #define atomic_dec(v) atomic_sub(1, v)
9671+static inline void atomic_dec_unchecked(atomic_unchecked_t *v)
9672+{
9673+ atomic_sub_unchecked(1, v);
9674+}
9675 #define atomic64_dec(v) atomic64_sub(1, v)
9676+static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v)
9677+{
9678+ atomic64_sub_unchecked(1, v);
9679+}
9680
9681 #define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0)
9682 #define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0)
9683
9684 #define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n)))
9685+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new)
9686+{
9687+ return cmpxchg(&v->counter, old, new);
9688+}
9689 #define atomic_xchg(v, new) (xchg(&((v)->counter), new))
9690+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new)
9691+{
9692+ return xchg(&v->counter, new);
9693+}
9694
9695 static inline int __atomic_add_unless(atomic_t *v, int a, int u)
9696 {
9697- int c, old;
9698+ int c, old, new;
9699 c = atomic_read(v);
9700 for (;;) {
9701- if (unlikely(c == (u)))
9702+ if (unlikely(c == u))
9703 break;
9704- old = atomic_cmpxchg((v), c, c + (a));
9705+
9706+ asm volatile("addcc %2, %0, %0\n"
9707+
9708+#ifdef CONFIG_PAX_REFCOUNT
9709+ "tvs %%icc, 6\n"
9710+#endif
9711+
9712+ : "=r" (new)
9713+ : "0" (c), "ir" (a)
9714+ : "cc");
9715+
9716+ old = atomic_cmpxchg(v, c, new);
9717 if (likely(old == c))
9718 break;
9719 c = old;
9720@@ -88,20 +165,35 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
9721 #define atomic64_cmpxchg(v, o, n) \
9722 ((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n)))
9723 #define atomic64_xchg(v, new) (xchg(&((v)->counter), new))
9724+static inline long atomic64_xchg_unchecked(atomic64_unchecked_t *v, long new)
9725+{
9726+ return xchg(&v->counter, new);
9727+}
9728
9729 static inline long atomic64_add_unless(atomic64_t *v, long a, long u)
9730 {
9731- long c, old;
9732+ long c, old, new;
9733 c = atomic64_read(v);
9734 for (;;) {
9735- if (unlikely(c == (u)))
9736+ if (unlikely(c == u))
9737 break;
9738- old = atomic64_cmpxchg((v), c, c + (a));
9739+
9740+ asm volatile("addcc %2, %0, %0\n"
9741+
9742+#ifdef CONFIG_PAX_REFCOUNT
9743+ "tvs %%xcc, 6\n"
9744+#endif
9745+
9746+ : "=r" (new)
9747+ : "0" (c), "ir" (a)
9748+ : "cc");
9749+
9750+ old = atomic64_cmpxchg(v, c, new);
9751 if (likely(old == c))
9752 break;
9753 c = old;
9754 }
9755- return c != (u);
9756+ return c != u;
9757 }
9758
9759 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
9760diff --git a/arch/sparc/include/asm/barrier_64.h b/arch/sparc/include/asm/barrier_64.h
9761index b5aad96..99d7465 100644
9762--- a/arch/sparc/include/asm/barrier_64.h
9763+++ b/arch/sparc/include/asm/barrier_64.h
9764@@ -57,7 +57,7 @@ do { __asm__ __volatile__("ba,pt %%xcc, 1f\n\t" \
9765 do { \
9766 compiletime_assert_atomic_type(*p); \
9767 barrier(); \
9768- ACCESS_ONCE(*p) = (v); \
9769+ ACCESS_ONCE_RW(*p) = (v); \
9770 } while (0)
9771
9772 #define smp_load_acquire(p) \
9773diff --git a/arch/sparc/include/asm/cache.h b/arch/sparc/include/asm/cache.h
9774index 5bb6991..5c2132e 100644
9775--- a/arch/sparc/include/asm/cache.h
9776+++ b/arch/sparc/include/asm/cache.h
9777@@ -7,10 +7,12 @@
9778 #ifndef _SPARC_CACHE_H
9779 #define _SPARC_CACHE_H
9780
9781+#include <linux/const.h>
9782+
9783 #define ARCH_SLAB_MINALIGN __alignof__(unsigned long long)
9784
9785 #define L1_CACHE_SHIFT 5
9786-#define L1_CACHE_BYTES 32
9787+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
9788
9789 #ifdef CONFIG_SPARC32
9790 #define SMP_CACHE_BYTES_SHIFT 5
9791diff --git a/arch/sparc/include/asm/elf_32.h b/arch/sparc/include/asm/elf_32.h
9792index a24e41f..47677ff 100644
9793--- a/arch/sparc/include/asm/elf_32.h
9794+++ b/arch/sparc/include/asm/elf_32.h
9795@@ -114,6 +114,13 @@ typedef struct {
9796
9797 #define ELF_ET_DYN_BASE (TASK_UNMAPPED_BASE)
9798
9799+#ifdef CONFIG_PAX_ASLR
9800+#define PAX_ELF_ET_DYN_BASE 0x10000UL
9801+
9802+#define PAX_DELTA_MMAP_LEN 16
9803+#define PAX_DELTA_STACK_LEN 16
9804+#endif
9805+
9806 /* This yields a mask that user programs can use to figure out what
9807 instruction set this cpu supports. This can NOT be done in userspace
9808 on Sparc. */
9809diff --git a/arch/sparc/include/asm/elf_64.h b/arch/sparc/include/asm/elf_64.h
9810index 370ca1e..d4f4a98 100644
9811--- a/arch/sparc/include/asm/elf_64.h
9812+++ b/arch/sparc/include/asm/elf_64.h
9813@@ -189,6 +189,13 @@ typedef struct {
9814 #define ELF_ET_DYN_BASE 0x0000010000000000UL
9815 #define COMPAT_ELF_ET_DYN_BASE 0x0000000070000000UL
9816
9817+#ifdef CONFIG_PAX_ASLR
9818+#define PAX_ELF_ET_DYN_BASE (test_thread_flag(TIF_32BIT) ? 0x10000UL : 0x100000UL)
9819+
9820+#define PAX_DELTA_MMAP_LEN (test_thread_flag(TIF_32BIT) ? 14 : 28)
9821+#define PAX_DELTA_STACK_LEN (test_thread_flag(TIF_32BIT) ? 15 : 29)
9822+#endif
9823+
9824 extern unsigned long sparc64_elf_hwcap;
9825 #define ELF_HWCAP sparc64_elf_hwcap
9826
9827diff --git a/arch/sparc/include/asm/pgalloc_32.h b/arch/sparc/include/asm/pgalloc_32.h
9828index 9b1c36d..209298b 100644
9829--- a/arch/sparc/include/asm/pgalloc_32.h
9830+++ b/arch/sparc/include/asm/pgalloc_32.h
9831@@ -33,6 +33,7 @@ static inline void pgd_set(pgd_t * pgdp, pmd_t * pmdp)
9832 }
9833
9834 #define pgd_populate(MM, PGD, PMD) pgd_set(PGD, PMD)
9835+#define pgd_populate_kernel(MM, PGD, PMD) pgd_populate((MM), (PGD), (PMD))
9836
9837 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm,
9838 unsigned long address)
9839diff --git a/arch/sparc/include/asm/pgalloc_64.h b/arch/sparc/include/asm/pgalloc_64.h
9840index bcfe063..b333142 100644
9841--- a/arch/sparc/include/asm/pgalloc_64.h
9842+++ b/arch/sparc/include/asm/pgalloc_64.h
9843@@ -26,6 +26,7 @@ static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
9844 }
9845
9846 #define pud_populate(MM, PUD, PMD) pud_set(PUD, PMD)
9847+#define pud_populate_kernel(MM, PUD, PMD) pud_populate((MM), (PUD), (PMD))
9848
9849 static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long addr)
9850 {
9851diff --git a/arch/sparc/include/asm/pgtable.h b/arch/sparc/include/asm/pgtable.h
9852index 59ba6f6..4518128 100644
9853--- a/arch/sparc/include/asm/pgtable.h
9854+++ b/arch/sparc/include/asm/pgtable.h
9855@@ -5,4 +5,8 @@
9856 #else
9857 #include <asm/pgtable_32.h>
9858 #endif
9859+
9860+#define ktla_ktva(addr) (addr)
9861+#define ktva_ktla(addr) (addr)
9862+
9863 #endif
9864diff --git a/arch/sparc/include/asm/pgtable_32.h b/arch/sparc/include/asm/pgtable_32.h
9865index 502f632..da1917f 100644
9866--- a/arch/sparc/include/asm/pgtable_32.h
9867+++ b/arch/sparc/include/asm/pgtable_32.h
9868@@ -50,6 +50,9 @@ extern unsigned long calc_highpages(void);
9869 #define PAGE_SHARED SRMMU_PAGE_SHARED
9870 #define PAGE_COPY SRMMU_PAGE_COPY
9871 #define PAGE_READONLY SRMMU_PAGE_RDONLY
9872+#define PAGE_SHARED_NOEXEC SRMMU_PAGE_SHARED_NOEXEC
9873+#define PAGE_COPY_NOEXEC SRMMU_PAGE_COPY_NOEXEC
9874+#define PAGE_READONLY_NOEXEC SRMMU_PAGE_RDONLY_NOEXEC
9875 #define PAGE_KERNEL SRMMU_PAGE_KERNEL
9876
9877 /* Top-level page directory - dummy used by init-mm.
9878@@ -62,18 +65,18 @@ extern unsigned long ptr_in_current_pgd;
9879
9880 /* xwr */
9881 #define __P000 PAGE_NONE
9882-#define __P001 PAGE_READONLY
9883-#define __P010 PAGE_COPY
9884-#define __P011 PAGE_COPY
9885+#define __P001 PAGE_READONLY_NOEXEC
9886+#define __P010 PAGE_COPY_NOEXEC
9887+#define __P011 PAGE_COPY_NOEXEC
9888 #define __P100 PAGE_READONLY
9889 #define __P101 PAGE_READONLY
9890 #define __P110 PAGE_COPY
9891 #define __P111 PAGE_COPY
9892
9893 #define __S000 PAGE_NONE
9894-#define __S001 PAGE_READONLY
9895-#define __S010 PAGE_SHARED
9896-#define __S011 PAGE_SHARED
9897+#define __S001 PAGE_READONLY_NOEXEC
9898+#define __S010 PAGE_SHARED_NOEXEC
9899+#define __S011 PAGE_SHARED_NOEXEC
9900 #define __S100 PAGE_READONLY
9901 #define __S101 PAGE_READONLY
9902 #define __S110 PAGE_SHARED
9903diff --git a/arch/sparc/include/asm/pgtsrmmu.h b/arch/sparc/include/asm/pgtsrmmu.h
9904index 79da178..c2eede8 100644
9905--- a/arch/sparc/include/asm/pgtsrmmu.h
9906+++ b/arch/sparc/include/asm/pgtsrmmu.h
9907@@ -115,6 +115,11 @@
9908 SRMMU_EXEC | SRMMU_REF)
9909 #define SRMMU_PAGE_RDONLY __pgprot(SRMMU_VALID | SRMMU_CACHE | \
9910 SRMMU_EXEC | SRMMU_REF)
9911+
9912+#define SRMMU_PAGE_SHARED_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_WRITE | SRMMU_REF)
9913+#define SRMMU_PAGE_COPY_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF)
9914+#define SRMMU_PAGE_RDONLY_NOEXEC __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_REF)
9915+
9916 #define SRMMU_PAGE_KERNEL __pgprot(SRMMU_VALID | SRMMU_CACHE | SRMMU_PRIV | \
9917 SRMMU_DIRTY | SRMMU_REF)
9918
9919diff --git a/arch/sparc/include/asm/spinlock_64.h b/arch/sparc/include/asm/spinlock_64.h
9920index 9689176..63c18ea 100644
9921--- a/arch/sparc/include/asm/spinlock_64.h
9922+++ b/arch/sparc/include/asm/spinlock_64.h
9923@@ -92,14 +92,19 @@ static inline void arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long fla
9924
9925 /* Multi-reader locks, these are much saner than the 32-bit Sparc ones... */
9926
9927-static void inline arch_read_lock(arch_rwlock_t *lock)
9928+static inline void arch_read_lock(arch_rwlock_t *lock)
9929 {
9930 unsigned long tmp1, tmp2;
9931
9932 __asm__ __volatile__ (
9933 "1: ldsw [%2], %0\n"
9934 " brlz,pn %0, 2f\n"
9935-"4: add %0, 1, %1\n"
9936+"4: addcc %0, 1, %1\n"
9937+
9938+#ifdef CONFIG_PAX_REFCOUNT
9939+" tvs %%icc, 6\n"
9940+#endif
9941+
9942 " cas [%2], %0, %1\n"
9943 " cmp %0, %1\n"
9944 " bne,pn %%icc, 1b\n"
9945@@ -112,10 +117,10 @@ static void inline arch_read_lock(arch_rwlock_t *lock)
9946 " .previous"
9947 : "=&r" (tmp1), "=&r" (tmp2)
9948 : "r" (lock)
9949- : "memory");
9950+ : "memory", "cc");
9951 }
9952
9953-static int inline arch_read_trylock(arch_rwlock_t *lock)
9954+static inline int arch_read_trylock(arch_rwlock_t *lock)
9955 {
9956 int tmp1, tmp2;
9957
9958@@ -123,7 +128,12 @@ static int inline arch_read_trylock(arch_rwlock_t *lock)
9959 "1: ldsw [%2], %0\n"
9960 " brlz,a,pn %0, 2f\n"
9961 " mov 0, %0\n"
9962-" add %0, 1, %1\n"
9963+" addcc %0, 1, %1\n"
9964+
9965+#ifdef CONFIG_PAX_REFCOUNT
9966+" tvs %%icc, 6\n"
9967+#endif
9968+
9969 " cas [%2], %0, %1\n"
9970 " cmp %0, %1\n"
9971 " bne,pn %%icc, 1b\n"
9972@@ -136,13 +146,18 @@ static int inline arch_read_trylock(arch_rwlock_t *lock)
9973 return tmp1;
9974 }
9975
9976-static void inline arch_read_unlock(arch_rwlock_t *lock)
9977+static inline void arch_read_unlock(arch_rwlock_t *lock)
9978 {
9979 unsigned long tmp1, tmp2;
9980
9981 __asm__ __volatile__(
9982 "1: lduw [%2], %0\n"
9983-" sub %0, 1, %1\n"
9984+" subcc %0, 1, %1\n"
9985+
9986+#ifdef CONFIG_PAX_REFCOUNT
9987+" tvs %%icc, 6\n"
9988+#endif
9989+
9990 " cas [%2], %0, %1\n"
9991 " cmp %0, %1\n"
9992 " bne,pn %%xcc, 1b\n"
9993@@ -152,7 +167,7 @@ static void inline arch_read_unlock(arch_rwlock_t *lock)
9994 : "memory");
9995 }
9996
9997-static void inline arch_write_lock(arch_rwlock_t *lock)
9998+static inline void arch_write_lock(arch_rwlock_t *lock)
9999 {
10000 unsigned long mask, tmp1, tmp2;
10001
10002@@ -177,7 +192,7 @@ static void inline arch_write_lock(arch_rwlock_t *lock)
10003 : "memory");
10004 }
10005
10006-static void inline arch_write_unlock(arch_rwlock_t *lock)
10007+static inline void arch_write_unlock(arch_rwlock_t *lock)
10008 {
10009 __asm__ __volatile__(
10010 " stw %%g0, [%0]"
10011@@ -186,7 +201,7 @@ static void inline arch_write_unlock(arch_rwlock_t *lock)
10012 : "memory");
10013 }
10014
10015-static int inline arch_write_trylock(arch_rwlock_t *lock)
10016+static inline int arch_write_trylock(arch_rwlock_t *lock)
10017 {
10018 unsigned long mask, tmp1, tmp2, result;
10019
10020diff --git a/arch/sparc/include/asm/thread_info_32.h b/arch/sparc/include/asm/thread_info_32.h
10021index 96efa7a..16858bf 100644
10022--- a/arch/sparc/include/asm/thread_info_32.h
10023+++ b/arch/sparc/include/asm/thread_info_32.h
10024@@ -49,6 +49,8 @@ struct thread_info {
10025 unsigned long w_saved;
10026
10027 struct restart_block restart_block;
10028+
10029+ unsigned long lowest_stack;
10030 };
10031
10032 /*
10033diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h
10034index a5f01ac..703b554 100644
10035--- a/arch/sparc/include/asm/thread_info_64.h
10036+++ b/arch/sparc/include/asm/thread_info_64.h
10037@@ -63,6 +63,8 @@ struct thread_info {
10038 struct pt_regs *kern_una_regs;
10039 unsigned int kern_una_insn;
10040
10041+ unsigned long lowest_stack;
10042+
10043 unsigned long fpregs[0] __attribute__ ((aligned(64)));
10044 };
10045
10046@@ -188,12 +190,13 @@ register struct thread_info *current_thread_info_reg asm("g6");
10047 #define TIF_NEED_RESCHED 3 /* rescheduling necessary */
10048 /* flag bit 4 is available */
10049 #define TIF_UNALIGNED 5 /* allowed to do unaligned accesses */
10050-/* flag bit 6 is available */
10051+#define TIF_GRSEC_SETXID 6 /* update credentials on syscall entry/exit */
10052 #define TIF_32BIT 7 /* 32-bit binary */
10053 #define TIF_NOHZ 8 /* in adaptive nohz mode */
10054 #define TIF_SECCOMP 9 /* secure computing */
10055 #define TIF_SYSCALL_AUDIT 10 /* syscall auditing active */
10056 #define TIF_SYSCALL_TRACEPOINT 11 /* syscall tracepoint instrumentation */
10057+
10058 /* NOTE: Thread flags >= 12 should be ones we have no interest
10059 * in using in assembly, else we can't use the mask as
10060 * an immediate value in instructions such as andcc.
10061@@ -213,12 +216,18 @@ register struct thread_info *current_thread_info_reg asm("g6");
10062 #define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
10063 #define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT)
10064 #define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
10065+#define _TIF_GRSEC_SETXID (1<<TIF_GRSEC_SETXID)
10066
10067 #define _TIF_USER_WORK_MASK ((0xff << TI_FLAG_WSAVED_SHIFT) | \
10068 _TIF_DO_NOTIFY_RESUME_MASK | \
10069 _TIF_NEED_RESCHED)
10070 #define _TIF_DO_NOTIFY_RESUME_MASK (_TIF_NOTIFY_RESUME | _TIF_SIGPENDING)
10071
10072+#define _TIF_WORK_SYSCALL \
10073+ (_TIF_SYSCALL_TRACE | _TIF_SECCOMP | _TIF_SYSCALL_AUDIT | \
10074+ _TIF_SYSCALL_TRACEPOINT | _TIF_NOHZ | _TIF_GRSEC_SETXID)
10075+
10076+
10077 /*
10078 * Thread-synchronous status.
10079 *
10080diff --git a/arch/sparc/include/asm/uaccess.h b/arch/sparc/include/asm/uaccess.h
10081index 0167d26..767bb0c 100644
10082--- a/arch/sparc/include/asm/uaccess.h
10083+++ b/arch/sparc/include/asm/uaccess.h
10084@@ -1,5 +1,6 @@
10085 #ifndef ___ASM_SPARC_UACCESS_H
10086 #define ___ASM_SPARC_UACCESS_H
10087+
10088 #if defined(__sparc__) && defined(__arch64__)
10089 #include <asm/uaccess_64.h>
10090 #else
10091diff --git a/arch/sparc/include/asm/uaccess_32.h b/arch/sparc/include/asm/uaccess_32.h
10092index 53a28dd..50c38c3 100644
10093--- a/arch/sparc/include/asm/uaccess_32.h
10094+++ b/arch/sparc/include/asm/uaccess_32.h
10095@@ -250,27 +250,46 @@ extern unsigned long __copy_user(void __user *to, const void __user *from, unsig
10096
10097 static inline unsigned long copy_to_user(void __user *to, const void *from, unsigned long n)
10098 {
10099- if (n && __access_ok((unsigned long) to, n))
10100+ if ((long)n < 0)
10101+ return n;
10102+
10103+ if (n && __access_ok((unsigned long) to, n)) {
10104+ if (!__builtin_constant_p(n))
10105+ check_object_size(from, n, true);
10106 return __copy_user(to, (__force void __user *) from, n);
10107- else
10108+ } else
10109 return n;
10110 }
10111
10112 static inline unsigned long __copy_to_user(void __user *to, const void *from, unsigned long n)
10113 {
10114+ if ((long)n < 0)
10115+ return n;
10116+
10117+ if (!__builtin_constant_p(n))
10118+ check_object_size(from, n, true);
10119+
10120 return __copy_user(to, (__force void __user *) from, n);
10121 }
10122
10123 static inline unsigned long copy_from_user(void *to, const void __user *from, unsigned long n)
10124 {
10125- if (n && __access_ok((unsigned long) from, n))
10126+ if ((long)n < 0)
10127+ return n;
10128+
10129+ if (n && __access_ok((unsigned long) from, n)) {
10130+ if (!__builtin_constant_p(n))
10131+ check_object_size(to, n, false);
10132 return __copy_user((__force void __user *) to, from, n);
10133- else
10134+ } else
10135 return n;
10136 }
10137
10138 static inline unsigned long __copy_from_user(void *to, const void __user *from, unsigned long n)
10139 {
10140+ if ((long)n < 0)
10141+ return n;
10142+
10143 return __copy_user((__force void __user *) to, from, n);
10144 }
10145
10146diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h
10147index ad7e178..c9e7423 100644
10148--- a/arch/sparc/include/asm/uaccess_64.h
10149+++ b/arch/sparc/include/asm/uaccess_64.h
10150@@ -10,6 +10,7 @@
10151 #include <linux/compiler.h>
10152 #include <linux/string.h>
10153 #include <linux/thread_info.h>
10154+#include <linux/kernel.h>
10155 #include <asm/asi.h>
10156 #include <asm/spitfire.h>
10157 #include <asm-generic/uaccess-unaligned.h>
10158@@ -214,8 +215,15 @@ extern unsigned long copy_from_user_fixup(void *to, const void __user *from,
10159 static inline unsigned long __must_check
10160 copy_from_user(void *to, const void __user *from, unsigned long size)
10161 {
10162- unsigned long ret = ___copy_from_user(to, from, size);
10163+ unsigned long ret;
10164
10165+ if ((long)size < 0 || size > INT_MAX)
10166+ return size;
10167+
10168+ if (!__builtin_constant_p(size))
10169+ check_object_size(to, size, false);
10170+
10171+ ret = ___copy_from_user(to, from, size);
10172 if (unlikely(ret))
10173 ret = copy_from_user_fixup(to, from, size);
10174
10175@@ -231,8 +239,15 @@ extern unsigned long copy_to_user_fixup(void __user *to, const void *from,
10176 static inline unsigned long __must_check
10177 copy_to_user(void __user *to, const void *from, unsigned long size)
10178 {
10179- unsigned long ret = ___copy_to_user(to, from, size);
10180+ unsigned long ret;
10181
10182+ if ((long)size < 0 || size > INT_MAX)
10183+ return size;
10184+
10185+ if (!__builtin_constant_p(size))
10186+ check_object_size(from, size, true);
10187+
10188+ ret = ___copy_to_user(to, from, size);
10189 if (unlikely(ret))
10190 ret = copy_to_user_fixup(to, from, size);
10191 return ret;
10192diff --git a/arch/sparc/kernel/Makefile b/arch/sparc/kernel/Makefile
10193index d15cc17..d0ae796 100644
10194--- a/arch/sparc/kernel/Makefile
10195+++ b/arch/sparc/kernel/Makefile
10196@@ -4,7 +4,7 @@
10197 #
10198
10199 asflags-y := -ansi
10200-ccflags-y := -Werror
10201+#ccflags-y := -Werror
10202
10203 extra-y := head_$(BITS).o
10204
10205diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
10206index 510baec..9ff2607 100644
10207--- a/arch/sparc/kernel/process_32.c
10208+++ b/arch/sparc/kernel/process_32.c
10209@@ -115,14 +115,14 @@ void show_regs(struct pt_regs *r)
10210
10211 printk("PSR: %08lx PC: %08lx NPC: %08lx Y: %08lx %s\n",
10212 r->psr, r->pc, r->npc, r->y, print_tainted());
10213- printk("PC: <%pS>\n", (void *) r->pc);
10214+ printk("PC: <%pA>\n", (void *) r->pc);
10215 printk("%%G: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
10216 r->u_regs[0], r->u_regs[1], r->u_regs[2], r->u_regs[3],
10217 r->u_regs[4], r->u_regs[5], r->u_regs[6], r->u_regs[7]);
10218 printk("%%O: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
10219 r->u_regs[8], r->u_regs[9], r->u_regs[10], r->u_regs[11],
10220 r->u_regs[12], r->u_regs[13], r->u_regs[14], r->u_regs[15]);
10221- printk("RPC: <%pS>\n", (void *) r->u_regs[15]);
10222+ printk("RPC: <%pA>\n", (void *) r->u_regs[15]);
10223
10224 printk("%%L: %08lx %08lx %08lx %08lx %08lx %08lx %08lx %08lx\n",
10225 rw->locals[0], rw->locals[1], rw->locals[2], rw->locals[3],
10226@@ -159,7 +159,7 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp)
10227 rw = (struct reg_window32 *) fp;
10228 pc = rw->ins[7];
10229 printk("[%08lx : ", pc);
10230- printk("%pS ] ", (void *) pc);
10231+ printk("%pA ] ", (void *) pc);
10232 fp = rw->ins[6];
10233 } while (++count < 16);
10234 printk("\n");
10235diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c
10236index d7b4967..2edf827 100644
10237--- a/arch/sparc/kernel/process_64.c
10238+++ b/arch/sparc/kernel/process_64.c
10239@@ -161,7 +161,7 @@ static void show_regwindow(struct pt_regs *regs)
10240 printk("i4: %016lx i5: %016lx i6: %016lx i7: %016lx\n",
10241 rwk->ins[4], rwk->ins[5], rwk->ins[6], rwk->ins[7]);
10242 if (regs->tstate & TSTATE_PRIV)
10243- printk("I7: <%pS>\n", (void *) rwk->ins[7]);
10244+ printk("I7: <%pA>\n", (void *) rwk->ins[7]);
10245 }
10246
10247 void show_regs(struct pt_regs *regs)
10248@@ -170,7 +170,7 @@ void show_regs(struct pt_regs *regs)
10249
10250 printk("TSTATE: %016lx TPC: %016lx TNPC: %016lx Y: %08x %s\n", regs->tstate,
10251 regs->tpc, regs->tnpc, regs->y, print_tainted());
10252- printk("TPC: <%pS>\n", (void *) regs->tpc);
10253+ printk("TPC: <%pA>\n", (void *) regs->tpc);
10254 printk("g0: %016lx g1: %016lx g2: %016lx g3: %016lx\n",
10255 regs->u_regs[0], regs->u_regs[1], regs->u_regs[2],
10256 regs->u_regs[3]);
10257@@ -183,7 +183,7 @@ void show_regs(struct pt_regs *regs)
10258 printk("o4: %016lx o5: %016lx sp: %016lx ret_pc: %016lx\n",
10259 regs->u_regs[12], regs->u_regs[13], regs->u_regs[14],
10260 regs->u_regs[15]);
10261- printk("RPC: <%pS>\n", (void *) regs->u_regs[15]);
10262+ printk("RPC: <%pA>\n", (void *) regs->u_regs[15]);
10263 show_regwindow(regs);
10264 show_stack(current, (unsigned long *) regs->u_regs[UREG_FP]);
10265 }
10266@@ -272,7 +272,7 @@ void arch_trigger_all_cpu_backtrace(void)
10267 ((tp && tp->task) ? tp->task->pid : -1));
10268
10269 if (gp->tstate & TSTATE_PRIV) {
10270- printk(" TPC[%pS] O7[%pS] I7[%pS] RPC[%pS]\n",
10271+ printk(" TPC[%pA] O7[%pA] I7[%pA] RPC[%pA]\n",
10272 (void *) gp->tpc,
10273 (void *) gp->o7,
10274 (void *) gp->i7,
10275diff --git a/arch/sparc/kernel/prom_common.c b/arch/sparc/kernel/prom_common.c
10276index 79cc0d1..ec62734 100644
10277--- a/arch/sparc/kernel/prom_common.c
10278+++ b/arch/sparc/kernel/prom_common.c
10279@@ -144,7 +144,7 @@ static int __init prom_common_nextprop(phandle node, char *prev, char *buf)
10280
10281 unsigned int prom_early_allocated __initdata;
10282
10283-static struct of_pdt_ops prom_sparc_ops __initdata = {
10284+static struct of_pdt_ops prom_sparc_ops __initconst = {
10285 .nextprop = prom_common_nextprop,
10286 .getproplen = prom_getproplen,
10287 .getproperty = prom_getproperty,
10288diff --git a/arch/sparc/kernel/ptrace_64.c b/arch/sparc/kernel/ptrace_64.c
10289index c13c9f2..d572c34 100644
10290--- a/arch/sparc/kernel/ptrace_64.c
10291+++ b/arch/sparc/kernel/ptrace_64.c
10292@@ -1060,6 +1060,10 @@ long arch_ptrace(struct task_struct *child, long request,
10293 return ret;
10294 }
10295
10296+#ifdef CONFIG_GRKERNSEC_SETXID
10297+extern void gr_delayed_cred_worker(void);
10298+#endif
10299+
10300 asmlinkage int syscall_trace_enter(struct pt_regs *regs)
10301 {
10302 int ret = 0;
10303@@ -1070,6 +1074,11 @@ asmlinkage int syscall_trace_enter(struct pt_regs *regs)
10304 if (test_thread_flag(TIF_NOHZ))
10305 user_exit();
10306
10307+#ifdef CONFIG_GRKERNSEC_SETXID
10308+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
10309+ gr_delayed_cred_worker();
10310+#endif
10311+
10312 if (test_thread_flag(TIF_SYSCALL_TRACE))
10313 ret = tracehook_report_syscall_entry(regs);
10314
10315@@ -1093,6 +1102,11 @@ asmlinkage void syscall_trace_leave(struct pt_regs *regs)
10316 if (test_thread_flag(TIF_NOHZ))
10317 user_exit();
10318
10319+#ifdef CONFIG_GRKERNSEC_SETXID
10320+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
10321+ gr_delayed_cred_worker();
10322+#endif
10323+
10324 audit_syscall_exit(regs);
10325
10326 if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
10327diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
10328index 745a363..b5566b1 100644
10329--- a/arch/sparc/kernel/smp_64.c
10330+++ b/arch/sparc/kernel/smp_64.c
10331@@ -868,8 +868,8 @@ extern unsigned long xcall_flush_dcache_page_cheetah;
10332 extern unsigned long xcall_flush_dcache_page_spitfire;
10333
10334 #ifdef CONFIG_DEBUG_DCFLUSH
10335-extern atomic_t dcpage_flushes;
10336-extern atomic_t dcpage_flushes_xcall;
10337+extern atomic_unchecked_t dcpage_flushes;
10338+extern atomic_unchecked_t dcpage_flushes_xcall;
10339 #endif
10340
10341 static inline void __local_flush_dcache_page(struct page *page)
10342@@ -893,7 +893,7 @@ void smp_flush_dcache_page_impl(struct page *page, int cpu)
10343 return;
10344
10345 #ifdef CONFIG_DEBUG_DCFLUSH
10346- atomic_inc(&dcpage_flushes);
10347+ atomic_inc_unchecked(&dcpage_flushes);
10348 #endif
10349
10350 this_cpu = get_cpu();
10351@@ -917,7 +917,7 @@ void smp_flush_dcache_page_impl(struct page *page, int cpu)
10352 xcall_deliver(data0, __pa(pg_addr),
10353 (u64) pg_addr, cpumask_of(cpu));
10354 #ifdef CONFIG_DEBUG_DCFLUSH
10355- atomic_inc(&dcpage_flushes_xcall);
10356+ atomic_inc_unchecked(&dcpage_flushes_xcall);
10357 #endif
10358 }
10359 }
10360@@ -936,7 +936,7 @@ void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
10361 preempt_disable();
10362
10363 #ifdef CONFIG_DEBUG_DCFLUSH
10364- atomic_inc(&dcpage_flushes);
10365+ atomic_inc_unchecked(&dcpage_flushes);
10366 #endif
10367 data0 = 0;
10368 pg_addr = page_address(page);
10369@@ -953,7 +953,7 @@ void flush_dcache_page_all(struct mm_struct *mm, struct page *page)
10370 xcall_deliver(data0, __pa(pg_addr),
10371 (u64) pg_addr, cpu_online_mask);
10372 #ifdef CONFIG_DEBUG_DCFLUSH
10373- atomic_inc(&dcpage_flushes_xcall);
10374+ atomic_inc_unchecked(&dcpage_flushes_xcall);
10375 #endif
10376 }
10377 __local_flush_dcache_page(page);
10378diff --git a/arch/sparc/kernel/sys_sparc_32.c b/arch/sparc/kernel/sys_sparc_32.c
10379index 3a8d184..49498a8 100644
10380--- a/arch/sparc/kernel/sys_sparc_32.c
10381+++ b/arch/sparc/kernel/sys_sparc_32.c
10382@@ -52,7 +52,7 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
10383 if (len > TASK_SIZE - PAGE_SIZE)
10384 return -ENOMEM;
10385 if (!addr)
10386- addr = TASK_UNMAPPED_BASE;
10387+ addr = current->mm->mmap_base;
10388
10389 info.flags = 0;
10390 info.length = len;
10391diff --git a/arch/sparc/kernel/sys_sparc_64.c b/arch/sparc/kernel/sys_sparc_64.c
10392index beb0b5a..5a153f7 100644
10393--- a/arch/sparc/kernel/sys_sparc_64.c
10394+++ b/arch/sparc/kernel/sys_sparc_64.c
10395@@ -88,13 +88,14 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
10396 struct vm_area_struct * vma;
10397 unsigned long task_size = TASK_SIZE;
10398 int do_color_align;
10399+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
10400 struct vm_unmapped_area_info info;
10401
10402 if (flags & MAP_FIXED) {
10403 /* We do not accept a shared mapping if it would violate
10404 * cache aliasing constraints.
10405 */
10406- if ((flags & MAP_SHARED) &&
10407+ if ((filp || (flags & MAP_SHARED)) &&
10408 ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
10409 return -EINVAL;
10410 return addr;
10411@@ -109,6 +110,10 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
10412 if (filp || (flags & MAP_SHARED))
10413 do_color_align = 1;
10414
10415+#ifdef CONFIG_PAX_RANDMMAP
10416+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
10417+#endif
10418+
10419 if (addr) {
10420 if (do_color_align)
10421 addr = COLOR_ALIGN(addr, pgoff);
10422@@ -116,22 +121,28 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsi
10423 addr = PAGE_ALIGN(addr);
10424
10425 vma = find_vma(mm, addr);
10426- if (task_size - len >= addr &&
10427- (!vma || addr + len <= vma->vm_start))
10428+ if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
10429 return addr;
10430 }
10431
10432 info.flags = 0;
10433 info.length = len;
10434- info.low_limit = TASK_UNMAPPED_BASE;
10435+ info.low_limit = mm->mmap_base;
10436 info.high_limit = min(task_size, VA_EXCLUDE_START);
10437 info.align_mask = do_color_align ? (PAGE_MASK & (SHMLBA - 1)) : 0;
10438 info.align_offset = pgoff << PAGE_SHIFT;
10439+ info.threadstack_offset = offset;
10440 addr = vm_unmapped_area(&info);
10441
10442 if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) {
10443 VM_BUG_ON(addr != -ENOMEM);
10444 info.low_limit = VA_EXCLUDE_END;
10445+
10446+#ifdef CONFIG_PAX_RANDMMAP
10447+ if (mm->pax_flags & MF_PAX_RANDMMAP)
10448+ info.low_limit += mm->delta_mmap;
10449+#endif
10450+
10451 info.high_limit = task_size;
10452 addr = vm_unmapped_area(&info);
10453 }
10454@@ -149,6 +160,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
10455 unsigned long task_size = STACK_TOP32;
10456 unsigned long addr = addr0;
10457 int do_color_align;
10458+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
10459 struct vm_unmapped_area_info info;
10460
10461 /* This should only ever run for 32-bit processes. */
10462@@ -158,7 +170,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
10463 /* We do not accept a shared mapping if it would violate
10464 * cache aliasing constraints.
10465 */
10466- if ((flags & MAP_SHARED) &&
10467+ if ((filp || (flags & MAP_SHARED)) &&
10468 ((addr - (pgoff << PAGE_SHIFT)) & (SHMLBA - 1)))
10469 return -EINVAL;
10470 return addr;
10471@@ -171,6 +183,10 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
10472 if (filp || (flags & MAP_SHARED))
10473 do_color_align = 1;
10474
10475+#ifdef CONFIG_PAX_RANDMMAP
10476+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
10477+#endif
10478+
10479 /* requesting a specific address */
10480 if (addr) {
10481 if (do_color_align)
10482@@ -179,8 +195,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
10483 addr = PAGE_ALIGN(addr);
10484
10485 vma = find_vma(mm, addr);
10486- if (task_size - len >= addr &&
10487- (!vma || addr + len <= vma->vm_start))
10488+ if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
10489 return addr;
10490 }
10491
10492@@ -190,6 +205,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
10493 info.high_limit = mm->mmap_base;
10494 info.align_mask = do_color_align ? (PAGE_MASK & (SHMLBA - 1)) : 0;
10495 info.align_offset = pgoff << PAGE_SHIFT;
10496+ info.threadstack_offset = offset;
10497 addr = vm_unmapped_area(&info);
10498
10499 /*
10500@@ -202,6 +218,12 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
10501 VM_BUG_ON(addr != -ENOMEM);
10502 info.flags = 0;
10503 info.low_limit = TASK_UNMAPPED_BASE;
10504+
10505+#ifdef CONFIG_PAX_RANDMMAP
10506+ if (mm->pax_flags & MF_PAX_RANDMMAP)
10507+ info.low_limit += mm->delta_mmap;
10508+#endif
10509+
10510 info.high_limit = STACK_TOP32;
10511 addr = vm_unmapped_area(&info);
10512 }
10513@@ -258,10 +280,14 @@ unsigned long get_fb_unmapped_area(struct file *filp, unsigned long orig_addr, u
10514 EXPORT_SYMBOL(get_fb_unmapped_area);
10515
10516 /* Essentially the same as PowerPC. */
10517-static unsigned long mmap_rnd(void)
10518+static unsigned long mmap_rnd(struct mm_struct *mm)
10519 {
10520 unsigned long rnd = 0UL;
10521
10522+#ifdef CONFIG_PAX_RANDMMAP
10523+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
10524+#endif
10525+
10526 if (current->flags & PF_RANDOMIZE) {
10527 unsigned long val = get_random_int();
10528 if (test_thread_flag(TIF_32BIT))
10529@@ -274,7 +300,7 @@ static unsigned long mmap_rnd(void)
10530
10531 void arch_pick_mmap_layout(struct mm_struct *mm)
10532 {
10533- unsigned long random_factor = mmap_rnd();
10534+ unsigned long random_factor = mmap_rnd(mm);
10535 unsigned long gap;
10536
10537 /*
10538@@ -287,6 +313,12 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
10539 gap == RLIM_INFINITY ||
10540 sysctl_legacy_va_layout) {
10541 mm->mmap_base = TASK_UNMAPPED_BASE + random_factor;
10542+
10543+#ifdef CONFIG_PAX_RANDMMAP
10544+ if (mm->pax_flags & MF_PAX_RANDMMAP)
10545+ mm->mmap_base += mm->delta_mmap;
10546+#endif
10547+
10548 mm->get_unmapped_area = arch_get_unmapped_area;
10549 } else {
10550 /* We know it's 32-bit */
10551@@ -298,6 +330,12 @@ void arch_pick_mmap_layout(struct mm_struct *mm)
10552 gap = (task_size / 6 * 5);
10553
10554 mm->mmap_base = PAGE_ALIGN(task_size - gap - random_factor);
10555+
10556+#ifdef CONFIG_PAX_RANDMMAP
10557+ if (mm->pax_flags & MF_PAX_RANDMMAP)
10558+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
10559+#endif
10560+
10561 mm->get_unmapped_area = arch_get_unmapped_area_topdown;
10562 }
10563 }
10564diff --git a/arch/sparc/kernel/syscalls.S b/arch/sparc/kernel/syscalls.S
10565index 33a17e7..d87fb1f 100644
10566--- a/arch/sparc/kernel/syscalls.S
10567+++ b/arch/sparc/kernel/syscalls.S
10568@@ -52,7 +52,7 @@ sys32_rt_sigreturn:
10569 #endif
10570 .align 32
10571 1: ldx [%g6 + TI_FLAGS], %l5
10572- andcc %l5, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0
10573+ andcc %l5, _TIF_WORK_SYSCALL, %g0
10574 be,pt %icc, rtrap
10575 nop
10576 call syscall_trace_leave
10577@@ -184,7 +184,7 @@ linux_sparc_syscall32:
10578
10579 srl %i3, 0, %o3 ! IEU0
10580 srl %i2, 0, %o2 ! IEU0 Group
10581- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0
10582+ andcc %l0, _TIF_WORK_SYSCALL, %g0
10583 bne,pn %icc, linux_syscall_trace32 ! CTI
10584 mov %i0, %l5 ! IEU1
10585 5: call %l7 ! CTI Group brk forced
10586@@ -208,7 +208,7 @@ linux_sparc_syscall:
10587
10588 mov %i3, %o3 ! IEU1
10589 mov %i4, %o4 ! IEU0 Group
10590- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0
10591+ andcc %l0, _TIF_WORK_SYSCALL, %g0
10592 bne,pn %icc, linux_syscall_trace ! CTI Group
10593 mov %i0, %l5 ! IEU0
10594 2: call %l7 ! CTI Group brk forced
10595@@ -223,7 +223,7 @@ ret_sys_call:
10596
10597 cmp %o0, -ERESTART_RESTARTBLOCK
10598 bgeu,pn %xcc, 1f
10599- andcc %l0, (_TIF_SYSCALL_TRACE|_TIF_SECCOMP|_TIF_SYSCALL_AUDIT|_TIF_SYSCALL_TRACEPOINT|_TIF_NOHZ), %g0
10600+ andcc %l0, _TIF_WORK_SYSCALL, %g0
10601 ldx [%sp + PTREGS_OFF + PT_V9_TNPC], %l1 ! pc = npc
10602
10603 2:
10604diff --git a/arch/sparc/kernel/traps_32.c b/arch/sparc/kernel/traps_32.c
10605index 6629829..036032d 100644
10606--- a/arch/sparc/kernel/traps_32.c
10607+++ b/arch/sparc/kernel/traps_32.c
10608@@ -44,6 +44,8 @@ static void instruction_dump(unsigned long *pc)
10609 #define __SAVE __asm__ __volatile__("save %sp, -0x40, %sp\n\t")
10610 #define __RESTORE __asm__ __volatile__("restore %g0, %g0, %g0\n\t")
10611
10612+extern void gr_handle_kernel_exploit(void);
10613+
10614 void die_if_kernel(char *str, struct pt_regs *regs)
10615 {
10616 static int die_counter;
10617@@ -76,15 +78,17 @@ void die_if_kernel(char *str, struct pt_regs *regs)
10618 count++ < 30 &&
10619 (((unsigned long) rw) >= PAGE_OFFSET) &&
10620 !(((unsigned long) rw) & 0x7)) {
10621- printk("Caller[%08lx]: %pS\n", rw->ins[7],
10622+ printk("Caller[%08lx]: %pA\n", rw->ins[7],
10623 (void *) rw->ins[7]);
10624 rw = (struct reg_window32 *)rw->ins[6];
10625 }
10626 }
10627 printk("Instruction DUMP:");
10628 instruction_dump ((unsigned long *) regs->pc);
10629- if(regs->psr & PSR_PS)
10630+ if(regs->psr & PSR_PS) {
10631+ gr_handle_kernel_exploit();
10632 do_exit(SIGKILL);
10633+ }
10634 do_exit(SIGSEGV);
10635 }
10636
10637diff --git a/arch/sparc/kernel/traps_64.c b/arch/sparc/kernel/traps_64.c
10638index 4ced92f..965eeed 100644
10639--- a/arch/sparc/kernel/traps_64.c
10640+++ b/arch/sparc/kernel/traps_64.c
10641@@ -77,7 +77,7 @@ static void dump_tl1_traplog(struct tl1_traplog *p)
10642 i + 1,
10643 p->trapstack[i].tstate, p->trapstack[i].tpc,
10644 p->trapstack[i].tnpc, p->trapstack[i].tt);
10645- printk("TRAPLOG: TPC<%pS>\n", (void *) p->trapstack[i].tpc);
10646+ printk("TRAPLOG: TPC<%pA>\n", (void *) p->trapstack[i].tpc);
10647 }
10648 }
10649
10650@@ -97,6 +97,12 @@ void bad_trap(struct pt_regs *regs, long lvl)
10651
10652 lvl -= 0x100;
10653 if (regs->tstate & TSTATE_PRIV) {
10654+
10655+#ifdef CONFIG_PAX_REFCOUNT
10656+ if (lvl == 6)
10657+ pax_report_refcount_overflow(regs);
10658+#endif
10659+
10660 sprintf(buffer, "Kernel bad sw trap %lx", lvl);
10661 die_if_kernel(buffer, regs);
10662 }
10663@@ -115,11 +121,16 @@ void bad_trap(struct pt_regs *regs, long lvl)
10664 void bad_trap_tl1(struct pt_regs *regs, long lvl)
10665 {
10666 char buffer[32];
10667-
10668+
10669 if (notify_die(DIE_TRAP_TL1, "bad trap tl1", regs,
10670 0, lvl, SIGTRAP) == NOTIFY_STOP)
10671 return;
10672
10673+#ifdef CONFIG_PAX_REFCOUNT
10674+ if (lvl == 6)
10675+ pax_report_refcount_overflow(regs);
10676+#endif
10677+
10678 dump_tl1_traplog((struct tl1_traplog *)(regs + 1));
10679
10680 sprintf (buffer, "Bad trap %lx at tl>0", lvl);
10681@@ -1149,7 +1160,7 @@ static void cheetah_log_errors(struct pt_regs *regs, struct cheetah_err_info *in
10682 regs->tpc, regs->tnpc, regs->u_regs[UREG_I7], regs->tstate);
10683 printk("%s" "ERROR(%d): ",
10684 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id());
10685- printk("TPC<%pS>\n", (void *) regs->tpc);
10686+ printk("TPC<%pA>\n", (void *) regs->tpc);
10687 printk("%s" "ERROR(%d): M_SYND(%lx), E_SYND(%lx)%s%s\n",
10688 (recoverable ? KERN_WARNING : KERN_CRIT), smp_processor_id(),
10689 (afsr & CHAFSR_M_SYNDROME) >> CHAFSR_M_SYNDROME_SHIFT,
10690@@ -1756,7 +1767,7 @@ void cheetah_plus_parity_error(int type, struct pt_regs *regs)
10691 smp_processor_id(),
10692 (type & 0x1) ? 'I' : 'D',
10693 regs->tpc);
10694- printk(KERN_EMERG "TPC<%pS>\n", (void *) regs->tpc);
10695+ printk(KERN_EMERG "TPC<%pA>\n", (void *) regs->tpc);
10696 panic("Irrecoverable Cheetah+ parity error.");
10697 }
10698
10699@@ -1764,7 +1775,7 @@ void cheetah_plus_parity_error(int type, struct pt_regs *regs)
10700 smp_processor_id(),
10701 (type & 0x1) ? 'I' : 'D',
10702 regs->tpc);
10703- printk(KERN_WARNING "TPC<%pS>\n", (void *) regs->tpc);
10704+ printk(KERN_WARNING "TPC<%pA>\n", (void *) regs->tpc);
10705 }
10706
10707 struct sun4v_error_entry {
10708@@ -1837,8 +1848,8 @@ struct sun4v_error_entry {
10709 /*0x38*/u64 reserved_5;
10710 };
10711
10712-static atomic_t sun4v_resum_oflow_cnt = ATOMIC_INIT(0);
10713-static atomic_t sun4v_nonresum_oflow_cnt = ATOMIC_INIT(0);
10714+static atomic_unchecked_t sun4v_resum_oflow_cnt = ATOMIC_INIT(0);
10715+static atomic_unchecked_t sun4v_nonresum_oflow_cnt = ATOMIC_INIT(0);
10716
10717 static const char *sun4v_err_type_to_str(u8 type)
10718 {
10719@@ -1930,7 +1941,7 @@ static void sun4v_report_real_raddr(const char *pfx, struct pt_regs *regs)
10720 }
10721
10722 static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent,
10723- int cpu, const char *pfx, atomic_t *ocnt)
10724+ int cpu, const char *pfx, atomic_unchecked_t *ocnt)
10725 {
10726 u64 *raw_ptr = (u64 *) ent;
10727 u32 attrs;
10728@@ -1988,8 +1999,8 @@ static void sun4v_log_error(struct pt_regs *regs, struct sun4v_error_entry *ent,
10729
10730 show_regs(regs);
10731
10732- if ((cnt = atomic_read(ocnt)) != 0) {
10733- atomic_set(ocnt, 0);
10734+ if ((cnt = atomic_read_unchecked(ocnt)) != 0) {
10735+ atomic_set_unchecked(ocnt, 0);
10736 wmb();
10737 printk("%s: Queue overflowed %d times.\n",
10738 pfx, cnt);
10739@@ -2046,7 +2057,7 @@ out:
10740 */
10741 void sun4v_resum_overflow(struct pt_regs *regs)
10742 {
10743- atomic_inc(&sun4v_resum_oflow_cnt);
10744+ atomic_inc_unchecked(&sun4v_resum_oflow_cnt);
10745 }
10746
10747 /* We run with %pil set to PIL_NORMAL_MAX and PSTATE_IE enabled in %pstate.
10748@@ -2099,7 +2110,7 @@ void sun4v_nonresum_overflow(struct pt_regs *regs)
10749 /* XXX Actually even this can make not that much sense. Perhaps
10750 * XXX we should just pull the plug and panic directly from here?
10751 */
10752- atomic_inc(&sun4v_nonresum_oflow_cnt);
10753+ atomic_inc_unchecked(&sun4v_nonresum_oflow_cnt);
10754 }
10755
10756 unsigned long sun4v_err_itlb_vaddr;
10757@@ -2114,9 +2125,9 @@ void sun4v_itlb_error_report(struct pt_regs *regs, int tl)
10758
10759 printk(KERN_EMERG "SUN4V-ITLB: Error at TPC[%lx], tl %d\n",
10760 regs->tpc, tl);
10761- printk(KERN_EMERG "SUN4V-ITLB: TPC<%pS>\n", (void *) regs->tpc);
10762+ printk(KERN_EMERG "SUN4V-ITLB: TPC<%pA>\n", (void *) regs->tpc);
10763 printk(KERN_EMERG "SUN4V-ITLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
10764- printk(KERN_EMERG "SUN4V-ITLB: O7<%pS>\n",
10765+ printk(KERN_EMERG "SUN4V-ITLB: O7<%pA>\n",
10766 (void *) regs->u_regs[UREG_I7]);
10767 printk(KERN_EMERG "SUN4V-ITLB: vaddr[%lx] ctx[%lx] "
10768 "pte[%lx] error[%lx]\n",
10769@@ -2138,9 +2149,9 @@ void sun4v_dtlb_error_report(struct pt_regs *regs, int tl)
10770
10771 printk(KERN_EMERG "SUN4V-DTLB: Error at TPC[%lx], tl %d\n",
10772 regs->tpc, tl);
10773- printk(KERN_EMERG "SUN4V-DTLB: TPC<%pS>\n", (void *) regs->tpc);
10774+ printk(KERN_EMERG "SUN4V-DTLB: TPC<%pA>\n", (void *) regs->tpc);
10775 printk(KERN_EMERG "SUN4V-DTLB: O7[%lx]\n", regs->u_regs[UREG_I7]);
10776- printk(KERN_EMERG "SUN4V-DTLB: O7<%pS>\n",
10777+ printk(KERN_EMERG "SUN4V-DTLB: O7<%pA>\n",
10778 (void *) regs->u_regs[UREG_I7]);
10779 printk(KERN_EMERG "SUN4V-DTLB: vaddr[%lx] ctx[%lx] "
10780 "pte[%lx] error[%lx]\n",
10781@@ -2359,13 +2370,13 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp)
10782 fp = (unsigned long)sf->fp + STACK_BIAS;
10783 }
10784
10785- printk(" [%016lx] %pS\n", pc, (void *) pc);
10786+ printk(" [%016lx] %pA\n", pc, (void *) pc);
10787 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
10788 if ((pc + 8UL) == (unsigned long) &return_to_handler) {
10789 int index = tsk->curr_ret_stack;
10790 if (tsk->ret_stack && index >= graph) {
10791 pc = tsk->ret_stack[index - graph].ret;
10792- printk(" [%016lx] %pS\n", pc, (void *) pc);
10793+ printk(" [%016lx] %pA\n", pc, (void *) pc);
10794 graph++;
10795 }
10796 }
10797@@ -2383,6 +2394,8 @@ static inline struct reg_window *kernel_stack_up(struct reg_window *rw)
10798 return (struct reg_window *) (fp + STACK_BIAS);
10799 }
10800
10801+extern void gr_handle_kernel_exploit(void);
10802+
10803 void die_if_kernel(char *str, struct pt_regs *regs)
10804 {
10805 static int die_counter;
10806@@ -2411,7 +2424,7 @@ void die_if_kernel(char *str, struct pt_regs *regs)
10807 while (rw &&
10808 count++ < 30 &&
10809 kstack_valid(tp, (unsigned long) rw)) {
10810- printk("Caller[%016lx]: %pS\n", rw->ins[7],
10811+ printk("Caller[%016lx]: %pA\n", rw->ins[7],
10812 (void *) rw->ins[7]);
10813
10814 rw = kernel_stack_up(rw);
10815@@ -2424,8 +2437,10 @@ void die_if_kernel(char *str, struct pt_regs *regs)
10816 }
10817 user_instruction_dump ((unsigned int __user *) regs->tpc);
10818 }
10819- if (regs->tstate & TSTATE_PRIV)
10820+ if (regs->tstate & TSTATE_PRIV) {
10821+ gr_handle_kernel_exploit();
10822 do_exit(SIGKILL);
10823+ }
10824 do_exit(SIGSEGV);
10825 }
10826 EXPORT_SYMBOL(die_if_kernel);
10827diff --git a/arch/sparc/kernel/unaligned_64.c b/arch/sparc/kernel/unaligned_64.c
10828index 35ab8b6..9046547 100644
10829--- a/arch/sparc/kernel/unaligned_64.c
10830+++ b/arch/sparc/kernel/unaligned_64.c
10831@@ -295,7 +295,7 @@ static void log_unaligned(struct pt_regs *regs)
10832 static DEFINE_RATELIMIT_STATE(ratelimit, 5 * HZ, 5);
10833
10834 if (__ratelimit(&ratelimit)) {
10835- printk("Kernel unaligned access at TPC[%lx] %pS\n",
10836+ printk("Kernel unaligned access at TPC[%lx] %pA\n",
10837 regs->tpc, (void *) regs->tpc);
10838 }
10839 }
10840diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile
10841index dbe119b..089c7c1 100644
10842--- a/arch/sparc/lib/Makefile
10843+++ b/arch/sparc/lib/Makefile
10844@@ -2,7 +2,7 @@
10845 #
10846
10847 asflags-y := -ansi -DST_DIV0=0x02
10848-ccflags-y := -Werror
10849+#ccflags-y := -Werror
10850
10851 lib-$(CONFIG_SPARC32) += ashrdi3.o
10852 lib-$(CONFIG_SPARC32) += memcpy.o memset.o
10853diff --git a/arch/sparc/lib/atomic_64.S b/arch/sparc/lib/atomic_64.S
10854index 85c233d..68500e0 100644
10855--- a/arch/sparc/lib/atomic_64.S
10856+++ b/arch/sparc/lib/atomic_64.S
10857@@ -17,7 +17,12 @@
10858 ENTRY(atomic_add) /* %o0 = increment, %o1 = atomic_ptr */
10859 BACKOFF_SETUP(%o2)
10860 1: lduw [%o1], %g1
10861- add %g1, %o0, %g7
10862+ addcc %g1, %o0, %g7
10863+
10864+#ifdef CONFIG_PAX_REFCOUNT
10865+ tvs %icc, 6
10866+#endif
10867+
10868 cas [%o1], %g1, %g7
10869 cmp %g1, %g7
10870 bne,pn %icc, BACKOFF_LABEL(2f, 1b)
10871@@ -27,10 +32,28 @@ ENTRY(atomic_add) /* %o0 = increment, %o1 = atomic_ptr */
10872 2: BACKOFF_SPIN(%o2, %o3, 1b)
10873 ENDPROC(atomic_add)
10874
10875+ENTRY(atomic_add_unchecked) /* %o0 = increment, %o1 = atomic_ptr */
10876+ BACKOFF_SETUP(%o2)
10877+1: lduw [%o1], %g1
10878+ add %g1, %o0, %g7
10879+ cas [%o1], %g1, %g7
10880+ cmp %g1, %g7
10881+ bne,pn %icc, 2f
10882+ nop
10883+ retl
10884+ nop
10885+2: BACKOFF_SPIN(%o2, %o3, 1b)
10886+ENDPROC(atomic_add_unchecked)
10887+
10888 ENTRY(atomic_sub) /* %o0 = decrement, %o1 = atomic_ptr */
10889 BACKOFF_SETUP(%o2)
10890 1: lduw [%o1], %g1
10891- sub %g1, %o0, %g7
10892+ subcc %g1, %o0, %g7
10893+
10894+#ifdef CONFIG_PAX_REFCOUNT
10895+ tvs %icc, 6
10896+#endif
10897+
10898 cas [%o1], %g1, %g7
10899 cmp %g1, %g7
10900 bne,pn %icc, BACKOFF_LABEL(2f, 1b)
10901@@ -40,10 +63,28 @@ ENTRY(atomic_sub) /* %o0 = decrement, %o1 = atomic_ptr */
10902 2: BACKOFF_SPIN(%o2, %o3, 1b)
10903 ENDPROC(atomic_sub)
10904
10905+ENTRY(atomic_sub_unchecked) /* %o0 = decrement, %o1 = atomic_ptr */
10906+ BACKOFF_SETUP(%o2)
10907+1: lduw [%o1], %g1
10908+ sub %g1, %o0, %g7
10909+ cas [%o1], %g1, %g7
10910+ cmp %g1, %g7
10911+ bne,pn %icc, 2f
10912+ nop
10913+ retl
10914+ nop
10915+2: BACKOFF_SPIN(%o2, %o3, 1b)
10916+ENDPROC(atomic_sub_unchecked)
10917+
10918 ENTRY(atomic_add_ret) /* %o0 = increment, %o1 = atomic_ptr */
10919 BACKOFF_SETUP(%o2)
10920 1: lduw [%o1], %g1
10921- add %g1, %o0, %g7
10922+ addcc %g1, %o0, %g7
10923+
10924+#ifdef CONFIG_PAX_REFCOUNT
10925+ tvs %icc, 6
10926+#endif
10927+
10928 cas [%o1], %g1, %g7
10929 cmp %g1, %g7
10930 bne,pn %icc, BACKOFF_LABEL(2f, 1b)
10931@@ -53,10 +94,29 @@ ENTRY(atomic_add_ret) /* %o0 = increment, %o1 = atomic_ptr */
10932 2: BACKOFF_SPIN(%o2, %o3, 1b)
10933 ENDPROC(atomic_add_ret)
10934
10935+ENTRY(atomic_add_ret_unchecked) /* %o0 = increment, %o1 = atomic_ptr */
10936+ BACKOFF_SETUP(%o2)
10937+1: lduw [%o1], %g1
10938+ addcc %g1, %o0, %g7
10939+ cas [%o1], %g1, %g7
10940+ cmp %g1, %g7
10941+ bne,pn %icc, 2f
10942+ add %g7, %o0, %g7
10943+ sra %g7, 0, %o0
10944+ retl
10945+ nop
10946+2: BACKOFF_SPIN(%o2, %o3, 1b)
10947+ENDPROC(atomic_add_ret_unchecked)
10948+
10949 ENTRY(atomic_sub_ret) /* %o0 = decrement, %o1 = atomic_ptr */
10950 BACKOFF_SETUP(%o2)
10951 1: lduw [%o1], %g1
10952- sub %g1, %o0, %g7
10953+ subcc %g1, %o0, %g7
10954+
10955+#ifdef CONFIG_PAX_REFCOUNT
10956+ tvs %icc, 6
10957+#endif
10958+
10959 cas [%o1], %g1, %g7
10960 cmp %g1, %g7
10961 bne,pn %icc, BACKOFF_LABEL(2f, 1b)
10962@@ -69,7 +129,12 @@ ENDPROC(atomic_sub_ret)
10963 ENTRY(atomic64_add) /* %o0 = increment, %o1 = atomic_ptr */
10964 BACKOFF_SETUP(%o2)
10965 1: ldx [%o1], %g1
10966- add %g1, %o0, %g7
10967+ addcc %g1, %o0, %g7
10968+
10969+#ifdef CONFIG_PAX_REFCOUNT
10970+ tvs %xcc, 6
10971+#endif
10972+
10973 casx [%o1], %g1, %g7
10974 cmp %g1, %g7
10975 bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
10976@@ -79,10 +144,28 @@ ENTRY(atomic64_add) /* %o0 = increment, %o1 = atomic_ptr */
10977 2: BACKOFF_SPIN(%o2, %o3, 1b)
10978 ENDPROC(atomic64_add)
10979
10980+ENTRY(atomic64_add_unchecked) /* %o0 = increment, %o1 = atomic_ptr */
10981+ BACKOFF_SETUP(%o2)
10982+1: ldx [%o1], %g1
10983+ addcc %g1, %o0, %g7
10984+ casx [%o1], %g1, %g7
10985+ cmp %g1, %g7
10986+ bne,pn %xcc, 2f
10987+ nop
10988+ retl
10989+ nop
10990+2: BACKOFF_SPIN(%o2, %o3, 1b)
10991+ENDPROC(atomic64_add_unchecked)
10992+
10993 ENTRY(atomic64_sub) /* %o0 = decrement, %o1 = atomic_ptr */
10994 BACKOFF_SETUP(%o2)
10995 1: ldx [%o1], %g1
10996- sub %g1, %o0, %g7
10997+ subcc %g1, %o0, %g7
10998+
10999+#ifdef CONFIG_PAX_REFCOUNT
11000+ tvs %xcc, 6
11001+#endif
11002+
11003 casx [%o1], %g1, %g7
11004 cmp %g1, %g7
11005 bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
11006@@ -92,10 +175,28 @@ ENTRY(atomic64_sub) /* %o0 = decrement, %o1 = atomic_ptr */
11007 2: BACKOFF_SPIN(%o2, %o3, 1b)
11008 ENDPROC(atomic64_sub)
11009
11010+ENTRY(atomic64_sub_unchecked) /* %o0 = decrement, %o1 = atomic_ptr */
11011+ BACKOFF_SETUP(%o2)
11012+1: ldx [%o1], %g1
11013+ subcc %g1, %o0, %g7
11014+ casx [%o1], %g1, %g7
11015+ cmp %g1, %g7
11016+ bne,pn %xcc, 2f
11017+ nop
11018+ retl
11019+ nop
11020+2: BACKOFF_SPIN(%o2, %o3, 1b)
11021+ENDPROC(atomic64_sub_unchecked)
11022+
11023 ENTRY(atomic64_add_ret) /* %o0 = increment, %o1 = atomic_ptr */
11024 BACKOFF_SETUP(%o2)
11025 1: ldx [%o1], %g1
11026- add %g1, %o0, %g7
11027+ addcc %g1, %o0, %g7
11028+
11029+#ifdef CONFIG_PAX_REFCOUNT
11030+ tvs %xcc, 6
11031+#endif
11032+
11033 casx [%o1], %g1, %g7
11034 cmp %g1, %g7
11035 bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
11036@@ -105,10 +206,29 @@ ENTRY(atomic64_add_ret) /* %o0 = increment, %o1 = atomic_ptr */
11037 2: BACKOFF_SPIN(%o2, %o3, 1b)
11038 ENDPROC(atomic64_add_ret)
11039
11040+ENTRY(atomic64_add_ret_unchecked) /* %o0 = increment, %o1 = atomic_ptr */
11041+ BACKOFF_SETUP(%o2)
11042+1: ldx [%o1], %g1
11043+ addcc %g1, %o0, %g7
11044+ casx [%o1], %g1, %g7
11045+ cmp %g1, %g7
11046+ bne,pn %xcc, 2f
11047+ add %g7, %o0, %g7
11048+ mov %g7, %o0
11049+ retl
11050+ nop
11051+2: BACKOFF_SPIN(%o2, %o3, 1b)
11052+ENDPROC(atomic64_add_ret_unchecked)
11053+
11054 ENTRY(atomic64_sub_ret) /* %o0 = decrement, %o1 = atomic_ptr */
11055 BACKOFF_SETUP(%o2)
11056 1: ldx [%o1], %g1
11057- sub %g1, %o0, %g7
11058+ subcc %g1, %o0, %g7
11059+
11060+#ifdef CONFIG_PAX_REFCOUNT
11061+ tvs %xcc, 6
11062+#endif
11063+
11064 casx [%o1], %g1, %g7
11065 cmp %g1, %g7
11066 bne,pn %xcc, BACKOFF_LABEL(2f, 1b)
11067diff --git a/arch/sparc/lib/ksyms.c b/arch/sparc/lib/ksyms.c
11068index 323335b..ed85ea2 100644
11069--- a/arch/sparc/lib/ksyms.c
11070+++ b/arch/sparc/lib/ksyms.c
11071@@ -100,12 +100,18 @@ EXPORT_SYMBOL(__clear_user);
11072
11073 /* Atomic counter implementation. */
11074 EXPORT_SYMBOL(atomic_add);
11075+EXPORT_SYMBOL(atomic_add_unchecked);
11076 EXPORT_SYMBOL(atomic_add_ret);
11077+EXPORT_SYMBOL(atomic_add_ret_unchecked);
11078 EXPORT_SYMBOL(atomic_sub);
11079+EXPORT_SYMBOL(atomic_sub_unchecked);
11080 EXPORT_SYMBOL(atomic_sub_ret);
11081 EXPORT_SYMBOL(atomic64_add);
11082+EXPORT_SYMBOL(atomic64_add_unchecked);
11083 EXPORT_SYMBOL(atomic64_add_ret);
11084+EXPORT_SYMBOL(atomic64_add_ret_unchecked);
11085 EXPORT_SYMBOL(atomic64_sub);
11086+EXPORT_SYMBOL(atomic64_sub_unchecked);
11087 EXPORT_SYMBOL(atomic64_sub_ret);
11088 EXPORT_SYMBOL(atomic64_dec_if_positive);
11089
11090diff --git a/arch/sparc/mm/Makefile b/arch/sparc/mm/Makefile
11091index 30c3ecc..736f015 100644
11092--- a/arch/sparc/mm/Makefile
11093+++ b/arch/sparc/mm/Makefile
11094@@ -2,7 +2,7 @@
11095 #
11096
11097 asflags-y := -ansi
11098-ccflags-y := -Werror
11099+#ccflags-y := -Werror
11100
11101 obj-$(CONFIG_SPARC64) += ultra.o tlb.o tsb.o gup.o
11102 obj-y += fault_$(BITS).o
11103diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
11104index 59dbd46..1dd7f5e 100644
11105--- a/arch/sparc/mm/fault_32.c
11106+++ b/arch/sparc/mm/fault_32.c
11107@@ -21,6 +21,9 @@
11108 #include <linux/perf_event.h>
11109 #include <linux/interrupt.h>
11110 #include <linux/kdebug.h>
11111+#include <linux/slab.h>
11112+#include <linux/pagemap.h>
11113+#include <linux/compiler.h>
11114
11115 #include <asm/page.h>
11116 #include <asm/pgtable.h>
11117@@ -159,6 +162,277 @@ static unsigned long compute_si_addr(struct pt_regs *regs, int text_fault)
11118 return safe_compute_effective_address(regs, insn);
11119 }
11120
11121+#ifdef CONFIG_PAX_PAGEEXEC
11122+#ifdef CONFIG_PAX_DLRESOLVE
11123+static void pax_emuplt_close(struct vm_area_struct *vma)
11124+{
11125+ vma->vm_mm->call_dl_resolve = 0UL;
11126+}
11127+
11128+static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
11129+{
11130+ unsigned int *kaddr;
11131+
11132+ vmf->page = alloc_page(GFP_HIGHUSER);
11133+ if (!vmf->page)
11134+ return VM_FAULT_OOM;
11135+
11136+ kaddr = kmap(vmf->page);
11137+ memset(kaddr, 0, PAGE_SIZE);
11138+ kaddr[0] = 0x9DE3BFA8U; /* save */
11139+ flush_dcache_page(vmf->page);
11140+ kunmap(vmf->page);
11141+ return VM_FAULT_MAJOR;
11142+}
11143+
11144+static const struct vm_operations_struct pax_vm_ops = {
11145+ .close = pax_emuplt_close,
11146+ .fault = pax_emuplt_fault
11147+};
11148+
11149+static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr)
11150+{
11151+ int ret;
11152+
11153+ INIT_LIST_HEAD(&vma->anon_vma_chain);
11154+ vma->vm_mm = current->mm;
11155+ vma->vm_start = addr;
11156+ vma->vm_end = addr + PAGE_SIZE;
11157+ vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC;
11158+ vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
11159+ vma->vm_ops = &pax_vm_ops;
11160+
11161+ ret = insert_vm_struct(current->mm, vma);
11162+ if (ret)
11163+ return ret;
11164+
11165+ ++current->mm->total_vm;
11166+ return 0;
11167+}
11168+#endif
11169+
11170+/*
11171+ * PaX: decide what to do with offenders (regs->pc = fault address)
11172+ *
11173+ * returns 1 when task should be killed
11174+ * 2 when patched PLT trampoline was detected
11175+ * 3 when unpatched PLT trampoline was detected
11176+ */
11177+static int pax_handle_fetch_fault(struct pt_regs *regs)
11178+{
11179+
11180+#ifdef CONFIG_PAX_EMUPLT
11181+ int err;
11182+
11183+ do { /* PaX: patched PLT emulation #1 */
11184+ unsigned int sethi1, sethi2, jmpl;
11185+
11186+ err = get_user(sethi1, (unsigned int *)regs->pc);
11187+ err |= get_user(sethi2, (unsigned int *)(regs->pc+4));
11188+ err |= get_user(jmpl, (unsigned int *)(regs->pc+8));
11189+
11190+ if (err)
11191+ break;
11192+
11193+ if ((sethi1 & 0xFFC00000U) == 0x03000000U &&
11194+ (sethi2 & 0xFFC00000U) == 0x03000000U &&
11195+ (jmpl & 0xFFFFE000U) == 0x81C06000U)
11196+ {
11197+ unsigned int addr;
11198+
11199+ regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10;
11200+ addr = regs->u_regs[UREG_G1];
11201+ addr += (((jmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U);
11202+ regs->pc = addr;
11203+ regs->npc = addr+4;
11204+ return 2;
11205+ }
11206+ } while (0);
11207+
11208+ do { /* PaX: patched PLT emulation #2 */
11209+ unsigned int ba;
11210+
11211+ err = get_user(ba, (unsigned int *)regs->pc);
11212+
11213+ if (err)
11214+ break;
11215+
11216+ if ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30480000U) {
11217+ unsigned int addr;
11218+
11219+ if ((ba & 0xFFC00000U) == 0x30800000U)
11220+ addr = regs->pc + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2);
11221+ else
11222+ addr = regs->pc + ((((ba | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2);
11223+ regs->pc = addr;
11224+ regs->npc = addr+4;
11225+ return 2;
11226+ }
11227+ } while (0);
11228+
11229+ do { /* PaX: patched PLT emulation #3 */
11230+ unsigned int sethi, bajmpl, nop;
11231+
11232+ err = get_user(sethi, (unsigned int *)regs->pc);
11233+ err |= get_user(bajmpl, (unsigned int *)(regs->pc+4));
11234+ err |= get_user(nop, (unsigned int *)(regs->pc+8));
11235+
11236+ if (err)
11237+ break;
11238+
11239+ if ((sethi & 0xFFC00000U) == 0x03000000U &&
11240+ ((bajmpl & 0xFFFFE000U) == 0x81C06000U || (bajmpl & 0xFFF80000U) == 0x30480000U) &&
11241+ nop == 0x01000000U)
11242+ {
11243+ unsigned int addr;
11244+
11245+ addr = (sethi & 0x003FFFFFU) << 10;
11246+ regs->u_regs[UREG_G1] = addr;
11247+ if ((bajmpl & 0xFFFFE000U) == 0x81C06000U)
11248+ addr += (((bajmpl | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U);
11249+ else
11250+ addr = regs->pc + ((((bajmpl | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2);
11251+ regs->pc = addr;
11252+ regs->npc = addr+4;
11253+ return 2;
11254+ }
11255+ } while (0);
11256+
11257+ do { /* PaX: unpatched PLT emulation step 1 */
11258+ unsigned int sethi, ba, nop;
11259+
11260+ err = get_user(sethi, (unsigned int *)regs->pc);
11261+ err |= get_user(ba, (unsigned int *)(regs->pc+4));
11262+ err |= get_user(nop, (unsigned int *)(regs->pc+8));
11263+
11264+ if (err)
11265+ break;
11266+
11267+ if ((sethi & 0xFFC00000U) == 0x03000000U &&
11268+ ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) &&
11269+ nop == 0x01000000U)
11270+ {
11271+ unsigned int addr, save, call;
11272+
11273+ if ((ba & 0xFFC00000U) == 0x30800000U)
11274+ addr = regs->pc + 4 + ((((ba | 0xFFC00000U) ^ 0x00200000U) + 0x00200000U) << 2);
11275+ else
11276+ addr = regs->pc + 4 + ((((ba | 0xFFF80000U) ^ 0x00040000U) + 0x00040000U) << 2);
11277+
11278+ err = get_user(save, (unsigned int *)addr);
11279+ err |= get_user(call, (unsigned int *)(addr+4));
11280+ err |= get_user(nop, (unsigned int *)(addr+8));
11281+ if (err)
11282+ break;
11283+
11284+#ifdef CONFIG_PAX_DLRESOLVE
11285+ if (save == 0x9DE3BFA8U &&
11286+ (call & 0xC0000000U) == 0x40000000U &&
11287+ nop == 0x01000000U)
11288+ {
11289+ struct vm_area_struct *vma;
11290+ unsigned long call_dl_resolve;
11291+
11292+ down_read(&current->mm->mmap_sem);
11293+ call_dl_resolve = current->mm->call_dl_resolve;
11294+ up_read(&current->mm->mmap_sem);
11295+ if (likely(call_dl_resolve))
11296+ goto emulate;
11297+
11298+ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
11299+
11300+ down_write(&current->mm->mmap_sem);
11301+ if (current->mm->call_dl_resolve) {
11302+ call_dl_resolve = current->mm->call_dl_resolve;
11303+ up_write(&current->mm->mmap_sem);
11304+ if (vma)
11305+ kmem_cache_free(vm_area_cachep, vma);
11306+ goto emulate;
11307+ }
11308+
11309+ call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE);
11310+ if (!vma || (call_dl_resolve & ~PAGE_MASK)) {
11311+ up_write(&current->mm->mmap_sem);
11312+ if (vma)
11313+ kmem_cache_free(vm_area_cachep, vma);
11314+ return 1;
11315+ }
11316+
11317+ if (pax_insert_vma(vma, call_dl_resolve)) {
11318+ up_write(&current->mm->mmap_sem);
11319+ kmem_cache_free(vm_area_cachep, vma);
11320+ return 1;
11321+ }
11322+
11323+ current->mm->call_dl_resolve = call_dl_resolve;
11324+ up_write(&current->mm->mmap_sem);
11325+
11326+emulate:
11327+ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
11328+ regs->pc = call_dl_resolve;
11329+ regs->npc = addr+4;
11330+ return 3;
11331+ }
11332+#endif
11333+
11334+ /* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */
11335+ if ((save & 0xFFC00000U) == 0x05000000U &&
11336+ (call & 0xFFFFE000U) == 0x85C0A000U &&
11337+ nop == 0x01000000U)
11338+ {
11339+ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
11340+ regs->u_regs[UREG_G2] = addr + 4;
11341+ addr = (save & 0x003FFFFFU) << 10;
11342+ addr += (((call | 0xFFFFE000U) ^ 0x00001000U) + 0x00001000U);
11343+ regs->pc = addr;
11344+ regs->npc = addr+4;
11345+ return 3;
11346+ }
11347+ }
11348+ } while (0);
11349+
11350+ do { /* PaX: unpatched PLT emulation step 2 */
11351+ unsigned int save, call, nop;
11352+
11353+ err = get_user(save, (unsigned int *)(regs->pc-4));
11354+ err |= get_user(call, (unsigned int *)regs->pc);
11355+ err |= get_user(nop, (unsigned int *)(regs->pc+4));
11356+ if (err)
11357+ break;
11358+
11359+ if (save == 0x9DE3BFA8U &&
11360+ (call & 0xC0000000U) == 0x40000000U &&
11361+ nop == 0x01000000U)
11362+ {
11363+ unsigned int dl_resolve = regs->pc + ((((call | 0xC0000000U) ^ 0x20000000U) + 0x20000000U) << 2);
11364+
11365+ regs->u_regs[UREG_RETPC] = regs->pc;
11366+ regs->pc = dl_resolve;
11367+ regs->npc = dl_resolve+4;
11368+ return 3;
11369+ }
11370+ } while (0);
11371+#endif
11372+
11373+ return 1;
11374+}
11375+
11376+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
11377+{
11378+ unsigned long i;
11379+
11380+ printk(KERN_ERR "PAX: bytes at PC: ");
11381+ for (i = 0; i < 8; i++) {
11382+ unsigned int c;
11383+ if (get_user(c, (unsigned int *)pc+i))
11384+ printk(KERN_CONT "???????? ");
11385+ else
11386+ printk(KERN_CONT "%08x ", c);
11387+ }
11388+ printk("\n");
11389+}
11390+#endif
11391+
11392 static noinline void do_fault_siginfo(int code, int sig, struct pt_regs *regs,
11393 int text_fault)
11394 {
11395@@ -229,6 +503,24 @@ good_area:
11396 if (!(vma->vm_flags & VM_WRITE))
11397 goto bad_area;
11398 } else {
11399+
11400+#ifdef CONFIG_PAX_PAGEEXEC
11401+ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && text_fault && !(vma->vm_flags & VM_EXEC)) {
11402+ up_read(&mm->mmap_sem);
11403+ switch (pax_handle_fetch_fault(regs)) {
11404+
11405+#ifdef CONFIG_PAX_EMUPLT
11406+ case 2:
11407+ case 3:
11408+ return;
11409+#endif
11410+
11411+ }
11412+ pax_report_fault(regs, (void *)regs->pc, (void *)regs->u_regs[UREG_FP]);
11413+ do_group_exit(SIGKILL);
11414+ }
11415+#endif
11416+
11417 /* Allow reads even for write-only mappings */
11418 if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
11419 goto bad_area;
11420diff --git a/arch/sparc/mm/fault_64.c b/arch/sparc/mm/fault_64.c
11421index 4ced3fc..234f1e4 100644
11422--- a/arch/sparc/mm/fault_64.c
11423+++ b/arch/sparc/mm/fault_64.c
11424@@ -22,6 +22,9 @@
11425 #include <linux/kdebug.h>
11426 #include <linux/percpu.h>
11427 #include <linux/context_tracking.h>
11428+#include <linux/slab.h>
11429+#include <linux/pagemap.h>
11430+#include <linux/compiler.h>
11431
11432 #include <asm/page.h>
11433 #include <asm/pgtable.h>
11434@@ -75,7 +78,7 @@ static void __kprobes bad_kernel_pc(struct pt_regs *regs, unsigned long vaddr)
11435 printk(KERN_CRIT "OOPS: Bogus kernel PC [%016lx] in fault handler\n",
11436 regs->tpc);
11437 printk(KERN_CRIT "OOPS: RPC [%016lx]\n", regs->u_regs[15]);
11438- printk("OOPS: RPC <%pS>\n", (void *) regs->u_regs[15]);
11439+ printk("OOPS: RPC <%pA>\n", (void *) regs->u_regs[15]);
11440 printk(KERN_CRIT "OOPS: Fault was to vaddr[%lx]\n", vaddr);
11441 dump_stack();
11442 unhandled_fault(regs->tpc, current, regs);
11443@@ -281,6 +284,466 @@ static void noinline __kprobes bogus_32bit_fault_tpc(struct pt_regs *regs)
11444 show_regs(regs);
11445 }
11446
11447+#ifdef CONFIG_PAX_PAGEEXEC
11448+#ifdef CONFIG_PAX_DLRESOLVE
11449+static void pax_emuplt_close(struct vm_area_struct *vma)
11450+{
11451+ vma->vm_mm->call_dl_resolve = 0UL;
11452+}
11453+
11454+static int pax_emuplt_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
11455+{
11456+ unsigned int *kaddr;
11457+
11458+ vmf->page = alloc_page(GFP_HIGHUSER);
11459+ if (!vmf->page)
11460+ return VM_FAULT_OOM;
11461+
11462+ kaddr = kmap(vmf->page);
11463+ memset(kaddr, 0, PAGE_SIZE);
11464+ kaddr[0] = 0x9DE3BFA8U; /* save */
11465+ flush_dcache_page(vmf->page);
11466+ kunmap(vmf->page);
11467+ return VM_FAULT_MAJOR;
11468+}
11469+
11470+static const struct vm_operations_struct pax_vm_ops = {
11471+ .close = pax_emuplt_close,
11472+ .fault = pax_emuplt_fault
11473+};
11474+
11475+static int pax_insert_vma(struct vm_area_struct *vma, unsigned long addr)
11476+{
11477+ int ret;
11478+
11479+ INIT_LIST_HEAD(&vma->anon_vma_chain);
11480+ vma->vm_mm = current->mm;
11481+ vma->vm_start = addr;
11482+ vma->vm_end = addr + PAGE_SIZE;
11483+ vma->vm_flags = VM_READ | VM_EXEC | VM_MAYREAD | VM_MAYEXEC;
11484+ vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
11485+ vma->vm_ops = &pax_vm_ops;
11486+
11487+ ret = insert_vm_struct(current->mm, vma);
11488+ if (ret)
11489+ return ret;
11490+
11491+ ++current->mm->total_vm;
11492+ return 0;
11493+}
11494+#endif
11495+
11496+/*
11497+ * PaX: decide what to do with offenders (regs->tpc = fault address)
11498+ *
11499+ * returns 1 when task should be killed
11500+ * 2 when patched PLT trampoline was detected
11501+ * 3 when unpatched PLT trampoline was detected
11502+ */
11503+static int pax_handle_fetch_fault(struct pt_regs *regs)
11504+{
11505+
11506+#ifdef CONFIG_PAX_EMUPLT
11507+ int err;
11508+
11509+ do { /* PaX: patched PLT emulation #1 */
11510+ unsigned int sethi1, sethi2, jmpl;
11511+
11512+ err = get_user(sethi1, (unsigned int *)regs->tpc);
11513+ err |= get_user(sethi2, (unsigned int *)(regs->tpc+4));
11514+ err |= get_user(jmpl, (unsigned int *)(regs->tpc+8));
11515+
11516+ if (err)
11517+ break;
11518+
11519+ if ((sethi1 & 0xFFC00000U) == 0x03000000U &&
11520+ (sethi2 & 0xFFC00000U) == 0x03000000U &&
11521+ (jmpl & 0xFFFFE000U) == 0x81C06000U)
11522+ {
11523+ unsigned long addr;
11524+
11525+ regs->u_regs[UREG_G1] = (sethi2 & 0x003FFFFFU) << 10;
11526+ addr = regs->u_regs[UREG_G1];
11527+ addr += (((jmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL);
11528+
11529+ if (test_thread_flag(TIF_32BIT))
11530+ addr &= 0xFFFFFFFFUL;
11531+
11532+ regs->tpc = addr;
11533+ regs->tnpc = addr+4;
11534+ return 2;
11535+ }
11536+ } while (0);
11537+
11538+ do { /* PaX: patched PLT emulation #2 */
11539+ unsigned int ba;
11540+
11541+ err = get_user(ba, (unsigned int *)regs->tpc);
11542+
11543+ if (err)
11544+ break;
11545+
11546+ if ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30480000U) {
11547+ unsigned long addr;
11548+
11549+ if ((ba & 0xFFC00000U) == 0x30800000U)
11550+ addr = regs->tpc + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2);
11551+ else
11552+ addr = regs->tpc + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2);
11553+
11554+ if (test_thread_flag(TIF_32BIT))
11555+ addr &= 0xFFFFFFFFUL;
11556+
11557+ regs->tpc = addr;
11558+ regs->tnpc = addr+4;
11559+ return 2;
11560+ }
11561+ } while (0);
11562+
11563+ do { /* PaX: patched PLT emulation #3 */
11564+ unsigned int sethi, bajmpl, nop;
11565+
11566+ err = get_user(sethi, (unsigned int *)regs->tpc);
11567+ err |= get_user(bajmpl, (unsigned int *)(regs->tpc+4));
11568+ err |= get_user(nop, (unsigned int *)(regs->tpc+8));
11569+
11570+ if (err)
11571+ break;
11572+
11573+ if ((sethi & 0xFFC00000U) == 0x03000000U &&
11574+ ((bajmpl & 0xFFFFE000U) == 0x81C06000U || (bajmpl & 0xFFF80000U) == 0x30480000U) &&
11575+ nop == 0x01000000U)
11576+ {
11577+ unsigned long addr;
11578+
11579+ addr = (sethi & 0x003FFFFFU) << 10;
11580+ regs->u_regs[UREG_G1] = addr;
11581+ if ((bajmpl & 0xFFFFE000U) == 0x81C06000U)
11582+ addr += (((bajmpl | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL);
11583+ else
11584+ addr = regs->tpc + ((((bajmpl | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2);
11585+
11586+ if (test_thread_flag(TIF_32BIT))
11587+ addr &= 0xFFFFFFFFUL;
11588+
11589+ regs->tpc = addr;
11590+ regs->tnpc = addr+4;
11591+ return 2;
11592+ }
11593+ } while (0);
11594+
11595+ do { /* PaX: patched PLT emulation #4 */
11596+ unsigned int sethi, mov1, call, mov2;
11597+
11598+ err = get_user(sethi, (unsigned int *)regs->tpc);
11599+ err |= get_user(mov1, (unsigned int *)(regs->tpc+4));
11600+ err |= get_user(call, (unsigned int *)(regs->tpc+8));
11601+ err |= get_user(mov2, (unsigned int *)(regs->tpc+12));
11602+
11603+ if (err)
11604+ break;
11605+
11606+ if ((sethi & 0xFFC00000U) == 0x03000000U &&
11607+ mov1 == 0x8210000FU &&
11608+ (call & 0xC0000000U) == 0x40000000U &&
11609+ mov2 == 0x9E100001U)
11610+ {
11611+ unsigned long addr;
11612+
11613+ regs->u_regs[UREG_G1] = regs->u_regs[UREG_RETPC];
11614+ addr = regs->tpc + 4 + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2);
11615+
11616+ if (test_thread_flag(TIF_32BIT))
11617+ addr &= 0xFFFFFFFFUL;
11618+
11619+ regs->tpc = addr;
11620+ regs->tnpc = addr+4;
11621+ return 2;
11622+ }
11623+ } while (0);
11624+
11625+ do { /* PaX: patched PLT emulation #5 */
11626+ unsigned int sethi, sethi1, sethi2, or1, or2, sllx, jmpl, nop;
11627+
11628+ err = get_user(sethi, (unsigned int *)regs->tpc);
11629+ err |= get_user(sethi1, (unsigned int *)(regs->tpc+4));
11630+ err |= get_user(sethi2, (unsigned int *)(regs->tpc+8));
11631+ err |= get_user(or1, (unsigned int *)(regs->tpc+12));
11632+ err |= get_user(or2, (unsigned int *)(regs->tpc+16));
11633+ err |= get_user(sllx, (unsigned int *)(regs->tpc+20));
11634+ err |= get_user(jmpl, (unsigned int *)(regs->tpc+24));
11635+ err |= get_user(nop, (unsigned int *)(regs->tpc+28));
11636+
11637+ if (err)
11638+ break;
11639+
11640+ if ((sethi & 0xFFC00000U) == 0x03000000U &&
11641+ (sethi1 & 0xFFC00000U) == 0x03000000U &&
11642+ (sethi2 & 0xFFC00000U) == 0x0B000000U &&
11643+ (or1 & 0xFFFFE000U) == 0x82106000U &&
11644+ (or2 & 0xFFFFE000U) == 0x8A116000U &&
11645+ sllx == 0x83287020U &&
11646+ jmpl == 0x81C04005U &&
11647+ nop == 0x01000000U)
11648+ {
11649+ unsigned long addr;
11650+
11651+ regs->u_regs[UREG_G1] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU);
11652+ regs->u_regs[UREG_G1] <<= 32;
11653+ regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU);
11654+ addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5];
11655+ regs->tpc = addr;
11656+ regs->tnpc = addr+4;
11657+ return 2;
11658+ }
11659+ } while (0);
11660+
11661+ do { /* PaX: patched PLT emulation #6 */
11662+ unsigned int sethi, sethi1, sethi2, sllx, or, jmpl, nop;
11663+
11664+ err = get_user(sethi, (unsigned int *)regs->tpc);
11665+ err |= get_user(sethi1, (unsigned int *)(regs->tpc+4));
11666+ err |= get_user(sethi2, (unsigned int *)(regs->tpc+8));
11667+ err |= get_user(sllx, (unsigned int *)(regs->tpc+12));
11668+ err |= get_user(or, (unsigned int *)(regs->tpc+16));
11669+ err |= get_user(jmpl, (unsigned int *)(regs->tpc+20));
11670+ err |= get_user(nop, (unsigned int *)(regs->tpc+24));
11671+
11672+ if (err)
11673+ break;
11674+
11675+ if ((sethi & 0xFFC00000U) == 0x03000000U &&
11676+ (sethi1 & 0xFFC00000U) == 0x03000000U &&
11677+ (sethi2 & 0xFFC00000U) == 0x0B000000U &&
11678+ sllx == 0x83287020U &&
11679+ (or & 0xFFFFE000U) == 0x8A116000U &&
11680+ jmpl == 0x81C04005U &&
11681+ nop == 0x01000000U)
11682+ {
11683+ unsigned long addr;
11684+
11685+ regs->u_regs[UREG_G1] = (sethi1 & 0x003FFFFFU) << 10;
11686+ regs->u_regs[UREG_G1] <<= 32;
11687+ regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or & 0x3FFU);
11688+ addr = regs->u_regs[UREG_G1] + regs->u_regs[UREG_G5];
11689+ regs->tpc = addr;
11690+ regs->tnpc = addr+4;
11691+ return 2;
11692+ }
11693+ } while (0);
11694+
11695+ do { /* PaX: unpatched PLT emulation step 1 */
11696+ unsigned int sethi, ba, nop;
11697+
11698+ err = get_user(sethi, (unsigned int *)regs->tpc);
11699+ err |= get_user(ba, (unsigned int *)(regs->tpc+4));
11700+ err |= get_user(nop, (unsigned int *)(regs->tpc+8));
11701+
11702+ if (err)
11703+ break;
11704+
11705+ if ((sethi & 0xFFC00000U) == 0x03000000U &&
11706+ ((ba & 0xFFC00000U) == 0x30800000U || (ba & 0xFFF80000U) == 0x30680000U) &&
11707+ nop == 0x01000000U)
11708+ {
11709+ unsigned long addr;
11710+ unsigned int save, call;
11711+ unsigned int sethi1, sethi2, or1, or2, sllx, add, jmpl;
11712+
11713+ if ((ba & 0xFFC00000U) == 0x30800000U)
11714+ addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFC00000UL) ^ 0x00200000UL) + 0x00200000UL) << 2);
11715+ else
11716+ addr = regs->tpc + 4 + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2);
11717+
11718+ if (test_thread_flag(TIF_32BIT))
11719+ addr &= 0xFFFFFFFFUL;
11720+
11721+ err = get_user(save, (unsigned int *)addr);
11722+ err |= get_user(call, (unsigned int *)(addr+4));
11723+ err |= get_user(nop, (unsigned int *)(addr+8));
11724+ if (err)
11725+ break;
11726+
11727+#ifdef CONFIG_PAX_DLRESOLVE
11728+ if (save == 0x9DE3BFA8U &&
11729+ (call & 0xC0000000U) == 0x40000000U &&
11730+ nop == 0x01000000U)
11731+ {
11732+ struct vm_area_struct *vma;
11733+ unsigned long call_dl_resolve;
11734+
11735+ down_read(&current->mm->mmap_sem);
11736+ call_dl_resolve = current->mm->call_dl_resolve;
11737+ up_read(&current->mm->mmap_sem);
11738+ if (likely(call_dl_resolve))
11739+ goto emulate;
11740+
11741+ vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
11742+
11743+ down_write(&current->mm->mmap_sem);
11744+ if (current->mm->call_dl_resolve) {
11745+ call_dl_resolve = current->mm->call_dl_resolve;
11746+ up_write(&current->mm->mmap_sem);
11747+ if (vma)
11748+ kmem_cache_free(vm_area_cachep, vma);
11749+ goto emulate;
11750+ }
11751+
11752+ call_dl_resolve = get_unmapped_area(NULL, 0UL, PAGE_SIZE, 0UL, MAP_PRIVATE);
11753+ if (!vma || (call_dl_resolve & ~PAGE_MASK)) {
11754+ up_write(&current->mm->mmap_sem);
11755+ if (vma)
11756+ kmem_cache_free(vm_area_cachep, vma);
11757+ return 1;
11758+ }
11759+
11760+ if (pax_insert_vma(vma, call_dl_resolve)) {
11761+ up_write(&current->mm->mmap_sem);
11762+ kmem_cache_free(vm_area_cachep, vma);
11763+ return 1;
11764+ }
11765+
11766+ current->mm->call_dl_resolve = call_dl_resolve;
11767+ up_write(&current->mm->mmap_sem);
11768+
11769+emulate:
11770+ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
11771+ regs->tpc = call_dl_resolve;
11772+ regs->tnpc = addr+4;
11773+ return 3;
11774+ }
11775+#endif
11776+
11777+ /* PaX: glibc 2.4+ generates sethi/jmpl instead of save/call */
11778+ if ((save & 0xFFC00000U) == 0x05000000U &&
11779+ (call & 0xFFFFE000U) == 0x85C0A000U &&
11780+ nop == 0x01000000U)
11781+ {
11782+ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
11783+ regs->u_regs[UREG_G2] = addr + 4;
11784+ addr = (save & 0x003FFFFFU) << 10;
11785+ addr += (((call | 0xFFFFFFFFFFFFE000UL) ^ 0x00001000UL) + 0x00001000UL);
11786+
11787+ if (test_thread_flag(TIF_32BIT))
11788+ addr &= 0xFFFFFFFFUL;
11789+
11790+ regs->tpc = addr;
11791+ regs->tnpc = addr+4;
11792+ return 3;
11793+ }
11794+
11795+ /* PaX: 64-bit PLT stub */
11796+ err = get_user(sethi1, (unsigned int *)addr);
11797+ err |= get_user(sethi2, (unsigned int *)(addr+4));
11798+ err |= get_user(or1, (unsigned int *)(addr+8));
11799+ err |= get_user(or2, (unsigned int *)(addr+12));
11800+ err |= get_user(sllx, (unsigned int *)(addr+16));
11801+ err |= get_user(add, (unsigned int *)(addr+20));
11802+ err |= get_user(jmpl, (unsigned int *)(addr+24));
11803+ err |= get_user(nop, (unsigned int *)(addr+28));
11804+ if (err)
11805+ break;
11806+
11807+ if ((sethi1 & 0xFFC00000U) == 0x09000000U &&
11808+ (sethi2 & 0xFFC00000U) == 0x0B000000U &&
11809+ (or1 & 0xFFFFE000U) == 0x88112000U &&
11810+ (or2 & 0xFFFFE000U) == 0x8A116000U &&
11811+ sllx == 0x89293020U &&
11812+ add == 0x8A010005U &&
11813+ jmpl == 0x89C14000U &&
11814+ nop == 0x01000000U)
11815+ {
11816+ regs->u_regs[UREG_G1] = (sethi & 0x003FFFFFU) << 10;
11817+ regs->u_regs[UREG_G4] = ((sethi1 & 0x003FFFFFU) << 10) | (or1 & 0x000003FFU);
11818+ regs->u_regs[UREG_G4] <<= 32;
11819+ regs->u_regs[UREG_G5] = ((sethi2 & 0x003FFFFFU) << 10) | (or2 & 0x000003FFU);
11820+ regs->u_regs[UREG_G5] += regs->u_regs[UREG_G4];
11821+ regs->u_regs[UREG_G4] = addr + 24;
11822+ addr = regs->u_regs[UREG_G5];
11823+ regs->tpc = addr;
11824+ regs->tnpc = addr+4;
11825+ return 3;
11826+ }
11827+ }
11828+ } while (0);
11829+
11830+#ifdef CONFIG_PAX_DLRESOLVE
11831+ do { /* PaX: unpatched PLT emulation step 2 */
11832+ unsigned int save, call, nop;
11833+
11834+ err = get_user(save, (unsigned int *)(regs->tpc-4));
11835+ err |= get_user(call, (unsigned int *)regs->tpc);
11836+ err |= get_user(nop, (unsigned int *)(regs->tpc+4));
11837+ if (err)
11838+ break;
11839+
11840+ if (save == 0x9DE3BFA8U &&
11841+ (call & 0xC0000000U) == 0x40000000U &&
11842+ nop == 0x01000000U)
11843+ {
11844+ unsigned long dl_resolve = regs->tpc + ((((call | 0xFFFFFFFFC0000000UL) ^ 0x20000000UL) + 0x20000000UL) << 2);
11845+
11846+ if (test_thread_flag(TIF_32BIT))
11847+ dl_resolve &= 0xFFFFFFFFUL;
11848+
11849+ regs->u_regs[UREG_RETPC] = regs->tpc;
11850+ regs->tpc = dl_resolve;
11851+ regs->tnpc = dl_resolve+4;
11852+ return 3;
11853+ }
11854+ } while (0);
11855+#endif
11856+
11857+ do { /* PaX: patched PLT emulation #7, must be AFTER the unpatched PLT emulation */
11858+ unsigned int sethi, ba, nop;
11859+
11860+ err = get_user(sethi, (unsigned int *)regs->tpc);
11861+ err |= get_user(ba, (unsigned int *)(regs->tpc+4));
11862+ err |= get_user(nop, (unsigned int *)(regs->tpc+8));
11863+
11864+ if (err)
11865+ break;
11866+
11867+ if ((sethi & 0xFFC00000U) == 0x03000000U &&
11868+ (ba & 0xFFF00000U) == 0x30600000U &&
11869+ nop == 0x01000000U)
11870+ {
11871+ unsigned long addr;
11872+
11873+ addr = (sethi & 0x003FFFFFU) << 10;
11874+ regs->u_regs[UREG_G1] = addr;
11875+ addr = regs->tpc + ((((ba | 0xFFFFFFFFFFF80000UL) ^ 0x00040000UL) + 0x00040000UL) << 2);
11876+
11877+ if (test_thread_flag(TIF_32BIT))
11878+ addr &= 0xFFFFFFFFUL;
11879+
11880+ regs->tpc = addr;
11881+ regs->tnpc = addr+4;
11882+ return 2;
11883+ }
11884+ } while (0);
11885+
11886+#endif
11887+
11888+ return 1;
11889+}
11890+
11891+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
11892+{
11893+ unsigned long i;
11894+
11895+ printk(KERN_ERR "PAX: bytes at PC: ");
11896+ for (i = 0; i < 8; i++) {
11897+ unsigned int c;
11898+ if (get_user(c, (unsigned int *)pc+i))
11899+ printk(KERN_CONT "???????? ");
11900+ else
11901+ printk(KERN_CONT "%08x ", c);
11902+ }
11903+ printk("\n");
11904+}
11905+#endif
11906+
11907 asmlinkage void __kprobes do_sparc64_fault(struct pt_regs *regs)
11908 {
11909 enum ctx_state prev_state = exception_enter();
11910@@ -352,6 +815,29 @@ retry:
11911 if (!vma)
11912 goto bad_area;
11913
11914+#ifdef CONFIG_PAX_PAGEEXEC
11915+ /* PaX: detect ITLB misses on non-exec pages */
11916+ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && vma->vm_start <= address &&
11917+ !(vma->vm_flags & VM_EXEC) && (fault_code & FAULT_CODE_ITLB))
11918+ {
11919+ if (address != regs->tpc)
11920+ goto good_area;
11921+
11922+ up_read(&mm->mmap_sem);
11923+ switch (pax_handle_fetch_fault(regs)) {
11924+
11925+#ifdef CONFIG_PAX_EMUPLT
11926+ case 2:
11927+ case 3:
11928+ return;
11929+#endif
11930+
11931+ }
11932+ pax_report_fault(regs, (void *)regs->tpc, (void *)(regs->u_regs[UREG_FP] + STACK_BIAS));
11933+ do_group_exit(SIGKILL);
11934+ }
11935+#endif
11936+
11937 /* Pure DTLB misses do not tell us whether the fault causing
11938 * load/store/atomic was a write or not, it only says that there
11939 * was no match. So in such a case we (carefully) read the
11940diff --git a/arch/sparc/mm/hugetlbpage.c b/arch/sparc/mm/hugetlbpage.c
11941index d329537..2c3746a 100644
11942--- a/arch/sparc/mm/hugetlbpage.c
11943+++ b/arch/sparc/mm/hugetlbpage.c
11944@@ -25,8 +25,10 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *filp,
11945 unsigned long addr,
11946 unsigned long len,
11947 unsigned long pgoff,
11948- unsigned long flags)
11949+ unsigned long flags,
11950+ unsigned long offset)
11951 {
11952+ struct mm_struct *mm = current->mm;
11953 unsigned long task_size = TASK_SIZE;
11954 struct vm_unmapped_area_info info;
11955
11956@@ -35,15 +37,22 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *filp,
11957
11958 info.flags = 0;
11959 info.length = len;
11960- info.low_limit = TASK_UNMAPPED_BASE;
11961+ info.low_limit = mm->mmap_base;
11962 info.high_limit = min(task_size, VA_EXCLUDE_START);
11963 info.align_mask = PAGE_MASK & ~HPAGE_MASK;
11964 info.align_offset = 0;
11965+ info.threadstack_offset = offset;
11966 addr = vm_unmapped_area(&info);
11967
11968 if ((addr & ~PAGE_MASK) && task_size > VA_EXCLUDE_END) {
11969 VM_BUG_ON(addr != -ENOMEM);
11970 info.low_limit = VA_EXCLUDE_END;
11971+
11972+#ifdef CONFIG_PAX_RANDMMAP
11973+ if (mm->pax_flags & MF_PAX_RANDMMAP)
11974+ info.low_limit += mm->delta_mmap;
11975+#endif
11976+
11977 info.high_limit = task_size;
11978 addr = vm_unmapped_area(&info);
11979 }
11980@@ -55,7 +64,8 @@ static unsigned long
11981 hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
11982 const unsigned long len,
11983 const unsigned long pgoff,
11984- const unsigned long flags)
11985+ const unsigned long flags,
11986+ const unsigned long offset)
11987 {
11988 struct mm_struct *mm = current->mm;
11989 unsigned long addr = addr0;
11990@@ -70,6 +80,7 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
11991 info.high_limit = mm->mmap_base;
11992 info.align_mask = PAGE_MASK & ~HPAGE_MASK;
11993 info.align_offset = 0;
11994+ info.threadstack_offset = offset;
11995 addr = vm_unmapped_area(&info);
11996
11997 /*
11998@@ -82,6 +93,12 @@ hugetlb_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
11999 VM_BUG_ON(addr != -ENOMEM);
12000 info.flags = 0;
12001 info.low_limit = TASK_UNMAPPED_BASE;
12002+
12003+#ifdef CONFIG_PAX_RANDMMAP
12004+ if (mm->pax_flags & MF_PAX_RANDMMAP)
12005+ info.low_limit += mm->delta_mmap;
12006+#endif
12007+
12008 info.high_limit = STACK_TOP32;
12009 addr = vm_unmapped_area(&info);
12010 }
12011@@ -96,6 +113,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
12012 struct mm_struct *mm = current->mm;
12013 struct vm_area_struct *vma;
12014 unsigned long task_size = TASK_SIZE;
12015+ unsigned long offset = gr_rand_threadstack_offset(mm, file, flags);
12016
12017 if (test_thread_flag(TIF_32BIT))
12018 task_size = STACK_TOP32;
12019@@ -111,19 +129,22 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
12020 return addr;
12021 }
12022
12023+#ifdef CONFIG_PAX_RANDMMAP
12024+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
12025+#endif
12026+
12027 if (addr) {
12028 addr = ALIGN(addr, HPAGE_SIZE);
12029 vma = find_vma(mm, addr);
12030- if (task_size - len >= addr &&
12031- (!vma || addr + len <= vma->vm_start))
12032+ if (task_size - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
12033 return addr;
12034 }
12035 if (mm->get_unmapped_area == arch_get_unmapped_area)
12036 return hugetlb_get_unmapped_area_bottomup(file, addr, len,
12037- pgoff, flags);
12038+ pgoff, flags, offset);
12039 else
12040 return hugetlb_get_unmapped_area_topdown(file, addr, len,
12041- pgoff, flags);
12042+ pgoff, flags, offset);
12043 }
12044
12045 pte_t *huge_pte_alloc(struct mm_struct *mm,
12046diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
12047index ed3c969..42fe48d 100644
12048--- a/arch/sparc/mm/init_64.c
12049+++ b/arch/sparc/mm/init_64.c
12050@@ -188,9 +188,9 @@ unsigned long sparc64_kern_sec_context __read_mostly;
12051 int num_kernel_image_mappings;
12052
12053 #ifdef CONFIG_DEBUG_DCFLUSH
12054-atomic_t dcpage_flushes = ATOMIC_INIT(0);
12055+atomic_unchecked_t dcpage_flushes = ATOMIC_INIT(0);
12056 #ifdef CONFIG_SMP
12057-atomic_t dcpage_flushes_xcall = ATOMIC_INIT(0);
12058+atomic_unchecked_t dcpage_flushes_xcall = ATOMIC_INIT(0);
12059 #endif
12060 #endif
12061
12062@@ -198,7 +198,7 @@ inline void flush_dcache_page_impl(struct page *page)
12063 {
12064 BUG_ON(tlb_type == hypervisor);
12065 #ifdef CONFIG_DEBUG_DCFLUSH
12066- atomic_inc(&dcpage_flushes);
12067+ atomic_inc_unchecked(&dcpage_flushes);
12068 #endif
12069
12070 #ifdef DCACHE_ALIASING_POSSIBLE
12071@@ -466,10 +466,10 @@ void mmu_info(struct seq_file *m)
12072
12073 #ifdef CONFIG_DEBUG_DCFLUSH
12074 seq_printf(m, "DCPageFlushes\t: %d\n",
12075- atomic_read(&dcpage_flushes));
12076+ atomic_read_unchecked(&dcpage_flushes));
12077 #ifdef CONFIG_SMP
12078 seq_printf(m, "DCPageFlushesXC\t: %d\n",
12079- atomic_read(&dcpage_flushes_xcall));
12080+ atomic_read_unchecked(&dcpage_flushes_xcall));
12081 #endif /* CONFIG_SMP */
12082 #endif /* CONFIG_DEBUG_DCFLUSH */
12083 }
12084diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
12085index 85258ca..df97c79 100644
12086--- a/arch/tile/Kconfig
12087+++ b/arch/tile/Kconfig
12088@@ -190,6 +190,7 @@ source "kernel/Kconfig.hz"
12089
12090 config KEXEC
12091 bool "kexec system call"
12092+ depends on !GRKERNSEC_KMEM
12093 ---help---
12094 kexec is a system call that implements the ability to shutdown your
12095 current kernel, and to start another kernel. It is like a reboot
12096diff --git a/arch/tile/include/asm/atomic_64.h b/arch/tile/include/asm/atomic_64.h
12097index ad220ee..2f537b3 100644
12098--- a/arch/tile/include/asm/atomic_64.h
12099+++ b/arch/tile/include/asm/atomic_64.h
12100@@ -105,6 +105,16 @@ static inline long atomic64_add_unless(atomic64_t *v, long a, long u)
12101
12102 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
12103
12104+#define atomic64_read_unchecked(v) atomic64_read(v)
12105+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i))
12106+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v))
12107+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v))
12108+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v))
12109+#define atomic64_inc_unchecked(v) atomic64_inc(v)
12110+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v)
12111+#define atomic64_dec_unchecked(v) atomic64_dec(v)
12112+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n))
12113+
12114 /* Atomic dec and inc don't implement barrier, so provide them if needed. */
12115 #define smp_mb__before_atomic_dec() smp_mb()
12116 #define smp_mb__after_atomic_dec() smp_mb()
12117diff --git a/arch/tile/include/asm/cache.h b/arch/tile/include/asm/cache.h
12118index 6160761..00cac88 100644
12119--- a/arch/tile/include/asm/cache.h
12120+++ b/arch/tile/include/asm/cache.h
12121@@ -15,11 +15,12 @@
12122 #ifndef _ASM_TILE_CACHE_H
12123 #define _ASM_TILE_CACHE_H
12124
12125+#include <linux/const.h>
12126 #include <arch/chip.h>
12127
12128 /* bytes per L1 data cache line */
12129 #define L1_CACHE_SHIFT CHIP_L1D_LOG_LINE_SIZE()
12130-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
12131+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
12132
12133 /* bytes per L2 cache line */
12134 #define L2_CACHE_SHIFT CHIP_L2_LOG_LINE_SIZE()
12135diff --git a/arch/tile/include/asm/uaccess.h b/arch/tile/include/asm/uaccess.h
12136index b6cde32..c0cb736 100644
12137--- a/arch/tile/include/asm/uaccess.h
12138+++ b/arch/tile/include/asm/uaccess.h
12139@@ -414,9 +414,9 @@ static inline unsigned long __must_check copy_from_user(void *to,
12140 const void __user *from,
12141 unsigned long n)
12142 {
12143- int sz = __compiletime_object_size(to);
12144+ size_t sz = __compiletime_object_size(to);
12145
12146- if (likely(sz == -1 || sz >= n))
12147+ if (likely(sz == (size_t)-1 || sz >= n))
12148 n = _copy_from_user(to, from, n);
12149 else
12150 copy_from_user_overflow();
12151diff --git a/arch/tile/mm/hugetlbpage.c b/arch/tile/mm/hugetlbpage.c
12152index e514899..f8743c4 100644
12153--- a/arch/tile/mm/hugetlbpage.c
12154+++ b/arch/tile/mm/hugetlbpage.c
12155@@ -207,6 +207,7 @@ static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file,
12156 info.high_limit = TASK_SIZE;
12157 info.align_mask = PAGE_MASK & ~huge_page_mask(h);
12158 info.align_offset = 0;
12159+ info.threadstack_offset = 0;
12160 return vm_unmapped_area(&info);
12161 }
12162
12163@@ -224,6 +225,7 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file,
12164 info.high_limit = current->mm->mmap_base;
12165 info.align_mask = PAGE_MASK & ~huge_page_mask(h);
12166 info.align_offset = 0;
12167+ info.threadstack_offset = 0;
12168 addr = vm_unmapped_area(&info);
12169
12170 /*
12171diff --git a/arch/um/Makefile b/arch/um/Makefile
12172index 36e658a..71a5c5a 100644
12173--- a/arch/um/Makefile
12174+++ b/arch/um/Makefile
12175@@ -72,6 +72,10 @@ USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\
12176 $(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \
12177 $(filter -I%,$(CFLAGS)) -D_FILE_OFFSET_BITS=64 -idirafter include
12178
12179+ifdef CONSTIFY_PLUGIN
12180+USER_CFLAGS += -fplugin-arg-constify_plugin-no-constify
12181+endif
12182+
12183 #This will adjust *FLAGS accordingly to the platform.
12184 include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
12185
12186diff --git a/arch/um/include/asm/cache.h b/arch/um/include/asm/cache.h
12187index 19e1bdd..3665b77 100644
12188--- a/arch/um/include/asm/cache.h
12189+++ b/arch/um/include/asm/cache.h
12190@@ -1,6 +1,7 @@
12191 #ifndef __UM_CACHE_H
12192 #define __UM_CACHE_H
12193
12194+#include <linux/const.h>
12195
12196 #if defined(CONFIG_UML_X86) && !defined(CONFIG_64BIT)
12197 # define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT)
12198@@ -12,6 +13,6 @@
12199 # define L1_CACHE_SHIFT 5
12200 #endif
12201
12202-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
12203+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
12204
12205 #endif
12206diff --git a/arch/um/include/asm/kmap_types.h b/arch/um/include/asm/kmap_types.h
12207index 2e0a6b1..a64d0f5 100644
12208--- a/arch/um/include/asm/kmap_types.h
12209+++ b/arch/um/include/asm/kmap_types.h
12210@@ -8,6 +8,6 @@
12211
12212 /* No more #include "asm/arch/kmap_types.h" ! */
12213
12214-#define KM_TYPE_NR 14
12215+#define KM_TYPE_NR 15
12216
12217 #endif
12218diff --git a/arch/um/include/asm/page.h b/arch/um/include/asm/page.h
12219index 5ff53d9..5850cdf 100644
12220--- a/arch/um/include/asm/page.h
12221+++ b/arch/um/include/asm/page.h
12222@@ -14,6 +14,9 @@
12223 #define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
12224 #define PAGE_MASK (~(PAGE_SIZE-1))
12225
12226+#define ktla_ktva(addr) (addr)
12227+#define ktva_ktla(addr) (addr)
12228+
12229 #ifndef __ASSEMBLY__
12230
12231 struct page;
12232diff --git a/arch/um/include/asm/pgtable-3level.h b/arch/um/include/asm/pgtable-3level.h
12233index 0032f92..cd151e0 100644
12234--- a/arch/um/include/asm/pgtable-3level.h
12235+++ b/arch/um/include/asm/pgtable-3level.h
12236@@ -58,6 +58,7 @@
12237 #define pud_present(x) (pud_val(x) & _PAGE_PRESENT)
12238 #define pud_populate(mm, pud, pmd) \
12239 set_pud(pud, __pud(_PAGE_TABLE + __pa(pmd)))
12240+#define pud_populate_kernel(mm, pud, pmd) pud_populate((mm), (pud), (pmd))
12241
12242 #ifdef CONFIG_64BIT
12243 #define set_pud(pudptr, pudval) set_64bit((u64 *) (pudptr), pud_val(pudval))
12244diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
12245index f17bca8..48adb87 100644
12246--- a/arch/um/kernel/process.c
12247+++ b/arch/um/kernel/process.c
12248@@ -356,22 +356,6 @@ int singlestepping(void * t)
12249 return 2;
12250 }
12251
12252-/*
12253- * Only x86 and x86_64 have an arch_align_stack().
12254- * All other arches have "#define arch_align_stack(x) (x)"
12255- * in their asm/exec.h
12256- * As this is included in UML from asm-um/system-generic.h,
12257- * we can use it to behave as the subarch does.
12258- */
12259-#ifndef arch_align_stack
12260-unsigned long arch_align_stack(unsigned long sp)
12261-{
12262- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
12263- sp -= get_random_int() % 8192;
12264- return sp & ~0xf;
12265-}
12266-#endif
12267-
12268 unsigned long get_wchan(struct task_struct *p)
12269 {
12270 unsigned long stack_page, sp, ip;
12271diff --git a/arch/unicore32/include/asm/cache.h b/arch/unicore32/include/asm/cache.h
12272index ad8f795..2c7eec6 100644
12273--- a/arch/unicore32/include/asm/cache.h
12274+++ b/arch/unicore32/include/asm/cache.h
12275@@ -12,8 +12,10 @@
12276 #ifndef __UNICORE_CACHE_H__
12277 #define __UNICORE_CACHE_H__
12278
12279-#define L1_CACHE_SHIFT (5)
12280-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
12281+#include <linux/const.h>
12282+
12283+#define L1_CACHE_SHIFT 5
12284+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
12285
12286 /*
12287 * Memory returned by kmalloc() may be used for DMA, so we must make
12288diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
12289index 6b8b429..7b21fe4 100644
12290--- a/arch/x86/Kconfig
12291+++ b/arch/x86/Kconfig
12292@@ -127,7 +127,7 @@ config X86
12293 select RTC_LIB
12294 select HAVE_DEBUG_STACKOVERFLOW
12295 select HAVE_IRQ_EXIT_ON_IRQ_STACK if X86_64
12296- select HAVE_CC_STACKPROTECTOR
12297+ select HAVE_CC_STACKPROTECTOR if X86_64 || !PAX_MEMORY_UDEREF
12298 select GENERIC_CPU_AUTOPROBE
12299 select HAVE_ARCH_AUDITSYSCALL
12300
12301@@ -251,7 +251,7 @@ config X86_HT
12302
12303 config X86_32_LAZY_GS
12304 def_bool y
12305- depends on X86_32 && !CC_STACKPROTECTOR
12306+ depends on X86_32 && !CC_STACKPROTECTOR && !PAX_MEMORY_UDEREF
12307
12308 config ARCH_HWEIGHT_CFLAGS
12309 string
12310@@ -545,6 +545,7 @@ config SCHED_OMIT_FRAME_POINTER
12311
12312 menuconfig HYPERVISOR_GUEST
12313 bool "Linux guest support"
12314+ depends on !GRKERNSEC_CONFIG_AUTO || GRKERNSEC_CONFIG_VIRT_GUEST || (GRKERNSEC_CONFIG_VIRT_HOST && GRKERNSEC_CONFIG_VIRT_XEN)
12315 ---help---
12316 Say Y here to enable options for running Linux under various hyper-
12317 visors. This option enables basic hypervisor detection and platform
12318@@ -1054,6 +1055,7 @@ choice
12319
12320 config NOHIGHMEM
12321 bool "off"
12322+ depends on !(PAX_PAGEEXEC && PAX_ENABLE_PAE)
12323 ---help---
12324 Linux can use up to 64 Gigabytes of physical memory on x86 systems.
12325 However, the address space of 32-bit x86 processors is only 4
12326@@ -1090,6 +1092,7 @@ config NOHIGHMEM
12327
12328 config HIGHMEM4G
12329 bool "4GB"
12330+ depends on !(PAX_PAGEEXEC && PAX_ENABLE_PAE)
12331 ---help---
12332 Select this if you have a 32-bit processor and between 1 and 4
12333 gigabytes of physical RAM.
12334@@ -1142,7 +1145,7 @@ config PAGE_OFFSET
12335 hex
12336 default 0xB0000000 if VMSPLIT_3G_OPT
12337 default 0x80000000 if VMSPLIT_2G
12338- default 0x78000000 if VMSPLIT_2G_OPT
12339+ default 0x70000000 if VMSPLIT_2G_OPT
12340 default 0x40000000 if VMSPLIT_1G
12341 default 0xC0000000
12342 depends on X86_32
12343@@ -1555,6 +1558,7 @@ source kernel/Kconfig.hz
12344
12345 config KEXEC
12346 bool "kexec system call"
12347+ depends on !GRKERNSEC_KMEM
12348 ---help---
12349 kexec is a system call that implements the ability to shutdown your
12350 current kernel, and to start another kernel. It is like a reboot
12351@@ -1706,7 +1710,9 @@ config X86_NEED_RELOCS
12352
12353 config PHYSICAL_ALIGN
12354 hex "Alignment value to which kernel should be aligned"
12355- default "0x200000"
12356+ default "0x1000000"
12357+ range 0x200000 0x1000000 if PAX_KERNEXEC && X86_PAE
12358+ range 0x400000 0x1000000 if PAX_KERNEXEC && !X86_PAE
12359 range 0x2000 0x1000000 if X86_32
12360 range 0x200000 0x1000000 if X86_64
12361 ---help---
12362@@ -1789,6 +1795,7 @@ config COMPAT_VDSO
12363 def_bool n
12364 prompt "Disable the 32-bit vDSO (needed for glibc 2.3.3)"
12365 depends on X86_32 || IA32_EMULATION
12366+ depends on !PAX_PAGEEXEC && !PAX_SEGMEXEC && !PAX_KERNEXEC && !PAX_MEMORY_UDEREF
12367 ---help---
12368 Certain buggy versions of glibc will crash if they are
12369 presented with a 32-bit vDSO that is not mapped at the address
12370diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu
12371index 6983314..54ad7e8 100644
12372--- a/arch/x86/Kconfig.cpu
12373+++ b/arch/x86/Kconfig.cpu
12374@@ -319,7 +319,7 @@ config X86_PPRO_FENCE
12375
12376 config X86_F00F_BUG
12377 def_bool y
12378- depends on M586MMX || M586TSC || M586 || M486
12379+ depends on (M586MMX || M586TSC || M586 || M486) && !PAX_KERNEXEC
12380
12381 config X86_INVD_BUG
12382 def_bool y
12383@@ -327,7 +327,7 @@ config X86_INVD_BUG
12384
12385 config X86_ALIGNMENT_16
12386 def_bool y
12387- depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || MELAN || MK6 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
12388+ depends on MWINCHIP3D || MWINCHIPC6 || MCYRIXIII || X86_ELAN || MK8 || MK7 || MK6 || MCORE2 || MPENTIUM4 || MPENTIUMIII || MPENTIUMII || M686 || M586MMX || M586TSC || M586 || M486 || MVIAC3_2 || MGEODEGX1
12389
12390 config X86_INTEL_USERCOPY
12391 def_bool y
12392@@ -369,7 +369,7 @@ config X86_CMPXCHG64
12393 # generates cmov.
12394 config X86_CMOV
12395 def_bool y
12396- depends on (MK8 || MK7 || MCORE2 || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)
12397+ depends on (MK8 || MK7 || MCORE2 || MPSC || MPENTIUM4 || MPENTIUMM || MPENTIUMIII || MPENTIUMII || M686 || MVIAC3_2 || MVIAC7 || MCRUSOE || MEFFICEON || X86_64 || MATOM || MGEODE_LX)
12398
12399 config X86_MINIMUM_CPU_FAMILY
12400 int
12401diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
12402index 61bd2ad..50b625d 100644
12403--- a/arch/x86/Kconfig.debug
12404+++ b/arch/x86/Kconfig.debug
12405@@ -93,7 +93,7 @@ config EFI_PGT_DUMP
12406 config DEBUG_RODATA
12407 bool "Write protect kernel read-only data structures"
12408 default y
12409- depends on DEBUG_KERNEL
12410+ depends on DEBUG_KERNEL && BROKEN
12411 ---help---
12412 Mark the kernel read-only data as write-protected in the pagetables,
12413 in order to catch accidental (and incorrect) writes to such const
12414@@ -111,7 +111,7 @@ config DEBUG_RODATA_TEST
12415
12416 config DEBUG_SET_MODULE_RONX
12417 bool "Set loadable kernel module data as NX and text as RO"
12418- depends on MODULES
12419+ depends on MODULES && BROKEN
12420 ---help---
12421 This option helps catch unintended modifications to loadable
12422 kernel module's text and read-only data. It also prevents execution
12423diff --git a/arch/x86/Makefile b/arch/x86/Makefile
12424index 33f71b0..c2cefa2 100644
12425--- a/arch/x86/Makefile
12426+++ b/arch/x86/Makefile
12427@@ -71,9 +71,6 @@ ifeq ($(CONFIG_X86_32),y)
12428 # CPU-specific tuning. Anything which can be shared with UML should go here.
12429 include $(srctree)/arch/x86/Makefile_32.cpu
12430 KBUILD_CFLAGS += $(cflags-y)
12431-
12432- # temporary until string.h is fixed
12433- KBUILD_CFLAGS += -ffreestanding
12434 else
12435 BITS := 64
12436 UTS_MACHINE := x86_64
12437@@ -114,6 +111,9 @@ else
12438 KBUILD_CFLAGS += $(call cc-option,-maccumulate-outgoing-args)
12439 endif
12440
12441+# temporary until string.h is fixed
12442+KBUILD_CFLAGS += -ffreestanding
12443+
12444 # Make sure compiler does not have buggy stack-protector support.
12445 ifdef CONFIG_CC_STACKPROTECTOR
12446 cc_has_sp := $(srctree)/scripts/gcc-x86_$(BITS)-has-stack-protector.sh
12447@@ -271,3 +271,12 @@ define archhelp
12448 echo ' FDINITRD=file initrd for the booted kernel'
12449 echo ' kvmconfig - Enable additional options for guest kernel support'
12450 endef
12451+
12452+define OLD_LD
12453+
12454+*** ${VERSION}.${PATCHLEVEL} PaX kernels no longer build correctly with old versions of binutils.
12455+*** Please upgrade your binutils to 2.18 or newer
12456+endef
12457+
12458+archprepare:
12459+ $(if $(LDFLAGS_BUILD_ID),,$(error $(OLD_LD)))
12460diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
12461index dbe8dd2..2f0a98f 100644
12462--- a/arch/x86/boot/Makefile
12463+++ b/arch/x86/boot/Makefile
12464@@ -52,6 +52,9 @@ $(obj)/cpustr.h: $(obj)/mkcpustr FORCE
12465 # ---------------------------------------------------------------------------
12466
12467 KBUILD_CFLAGS := $(USERINCLUDE) $(REALMODE_CFLAGS) -D_SETUP
12468+ifdef CONSTIFY_PLUGIN
12469+KBUILD_CFLAGS += -fplugin-arg-constify_plugin-no-constify
12470+endif
12471 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
12472 GCOV_PROFILE := n
12473
12474diff --git a/arch/x86/boot/bitops.h b/arch/x86/boot/bitops.h
12475index 878e4b9..20537ab 100644
12476--- a/arch/x86/boot/bitops.h
12477+++ b/arch/x86/boot/bitops.h
12478@@ -26,7 +26,7 @@ static inline int variable_test_bit(int nr, const void *addr)
12479 u8 v;
12480 const u32 *p = (const u32 *)addr;
12481
12482- asm("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr));
12483+ asm volatile("btl %2,%1; setc %0" : "=qm" (v) : "m" (*p), "Ir" (nr));
12484 return v;
12485 }
12486
12487@@ -37,7 +37,7 @@ static inline int variable_test_bit(int nr, const void *addr)
12488
12489 static inline void set_bit(int nr, void *addr)
12490 {
12491- asm("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr));
12492+ asm volatile("btsl %1,%0" : "+m" (*(u32 *)addr) : "Ir" (nr));
12493 }
12494
12495 #endif /* BOOT_BITOPS_H */
12496diff --git a/arch/x86/boot/boot.h b/arch/x86/boot/boot.h
12497index bd49ec6..94c7f58 100644
12498--- a/arch/x86/boot/boot.h
12499+++ b/arch/x86/boot/boot.h
12500@@ -84,7 +84,7 @@ static inline void io_delay(void)
12501 static inline u16 ds(void)
12502 {
12503 u16 seg;
12504- asm("movw %%ds,%0" : "=rm" (seg));
12505+ asm volatile("movw %%ds,%0" : "=rm" (seg));
12506 return seg;
12507 }
12508
12509diff --git a/arch/x86/boot/compressed/Makefile b/arch/x86/boot/compressed/Makefile
12510index 0fcd913..3bb5c42 100644
12511--- a/arch/x86/boot/compressed/Makefile
12512+++ b/arch/x86/boot/compressed/Makefile
12513@@ -16,6 +16,9 @@ KBUILD_CFLAGS += $(cflags-y)
12514 KBUILD_CFLAGS += -mno-mmx -mno-sse
12515 KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
12516 KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
12517+ifdef CONSTIFY_PLUGIN
12518+KBUILD_CFLAGS += -fplugin-arg-constify_plugin-no-constify
12519+endif
12520
12521 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
12522 GCOV_PROFILE := n
12523diff --git a/arch/x86/boot/compressed/efi_stub_32.S b/arch/x86/boot/compressed/efi_stub_32.S
12524index a53440e..c3dbf1e 100644
12525--- a/arch/x86/boot/compressed/efi_stub_32.S
12526+++ b/arch/x86/boot/compressed/efi_stub_32.S
12527@@ -46,16 +46,13 @@ ENTRY(efi_call_phys)
12528 * parameter 2, ..., param n. To make things easy, we save the return
12529 * address of efi_call_phys in a global variable.
12530 */
12531- popl %ecx
12532- movl %ecx, saved_return_addr(%edx)
12533- /* get the function pointer into ECX*/
12534- popl %ecx
12535- movl %ecx, efi_rt_function_ptr(%edx)
12536+ popl saved_return_addr(%edx)
12537+ popl efi_rt_function_ptr(%edx)
12538
12539 /*
12540 * 3. Call the physical function.
12541 */
12542- call *%ecx
12543+ call *efi_rt_function_ptr(%edx)
12544
12545 /*
12546 * 4. Balance the stack. And because EAX contain the return value,
12547@@ -67,15 +64,12 @@ ENTRY(efi_call_phys)
12548 1: popl %edx
12549 subl $1b, %edx
12550
12551- movl efi_rt_function_ptr(%edx), %ecx
12552- pushl %ecx
12553+ pushl efi_rt_function_ptr(%edx)
12554
12555 /*
12556 * 10. Push the saved return address onto the stack and return.
12557 */
12558- movl saved_return_addr(%edx), %ecx
12559- pushl %ecx
12560- ret
12561+ jmpl *saved_return_addr(%edx)
12562 ENDPROC(efi_call_phys)
12563 .previous
12564
12565diff --git a/arch/x86/boot/compressed/head_32.S b/arch/x86/boot/compressed/head_32.S
12566index cbed140..5f2ca57 100644
12567--- a/arch/x86/boot/compressed/head_32.S
12568+++ b/arch/x86/boot/compressed/head_32.S
12569@@ -140,10 +140,10 @@ preferred_addr:
12570 addl %eax, %ebx
12571 notl %eax
12572 andl %eax, %ebx
12573- cmpl $LOAD_PHYSICAL_ADDR, %ebx
12574+ cmpl $____LOAD_PHYSICAL_ADDR, %ebx
12575 jge 1f
12576 #endif
12577- movl $LOAD_PHYSICAL_ADDR, %ebx
12578+ movl $____LOAD_PHYSICAL_ADDR, %ebx
12579 1:
12580
12581 /* Target address to relocate to for decompression */
12582diff --git a/arch/x86/boot/compressed/head_64.S b/arch/x86/boot/compressed/head_64.S
12583index 0d558ee..58f257e 100644
12584--- a/arch/x86/boot/compressed/head_64.S
12585+++ b/arch/x86/boot/compressed/head_64.S
12586@@ -94,10 +94,10 @@ ENTRY(startup_32)
12587 addl %eax, %ebx
12588 notl %eax
12589 andl %eax, %ebx
12590- cmpl $LOAD_PHYSICAL_ADDR, %ebx
12591+ cmpl $____LOAD_PHYSICAL_ADDR, %ebx
12592 jge 1f
12593 #endif
12594- movl $LOAD_PHYSICAL_ADDR, %ebx
12595+ movl $____LOAD_PHYSICAL_ADDR, %ebx
12596 1:
12597
12598 /* Target address to relocate to for decompression */
12599@@ -322,10 +322,10 @@ preferred_addr:
12600 addq %rax, %rbp
12601 notq %rax
12602 andq %rax, %rbp
12603- cmpq $LOAD_PHYSICAL_ADDR, %rbp
12604+ cmpq $____LOAD_PHYSICAL_ADDR, %rbp
12605 jge 1f
12606 #endif
12607- movq $LOAD_PHYSICAL_ADDR, %rbp
12608+ movq $____LOAD_PHYSICAL_ADDR, %rbp
12609 1:
12610
12611 /* Target address to relocate to for decompression */
12612@@ -431,8 +431,8 @@ gdt:
12613 .long gdt
12614 .word 0
12615 .quad 0x0000000000000000 /* NULL descriptor */
12616- .quad 0x00af9a000000ffff /* __KERNEL_CS */
12617- .quad 0x00cf92000000ffff /* __KERNEL_DS */
12618+ .quad 0x00af9b000000ffff /* __KERNEL_CS */
12619+ .quad 0x00cf93000000ffff /* __KERNEL_DS */
12620 .quad 0x0080890000000000 /* TS descriptor */
12621 .quad 0x0000000000000000 /* TS continued */
12622 gdt_end:
12623diff --git a/arch/x86/boot/compressed/misc.c b/arch/x86/boot/compressed/misc.c
12624index 57ab74d..7c52182 100644
12625--- a/arch/x86/boot/compressed/misc.c
12626+++ b/arch/x86/boot/compressed/misc.c
12627@@ -242,7 +242,7 @@ static void handle_relocations(void *output, unsigned long output_len)
12628 * Calculate the delta between where vmlinux was linked to load
12629 * and where it was actually loaded.
12630 */
12631- delta = min_addr - LOAD_PHYSICAL_ADDR;
12632+ delta = min_addr - ____LOAD_PHYSICAL_ADDR;
12633 if (!delta) {
12634 debug_putstr("No relocation needed... ");
12635 return;
12636@@ -312,7 +312,7 @@ static void parse_elf(void *output)
12637 Elf32_Ehdr ehdr;
12638 Elf32_Phdr *phdrs, *phdr;
12639 #endif
12640- void *dest;
12641+ void *dest, *prev;
12642 int i;
12643
12644 memcpy(&ehdr, output, sizeof(ehdr));
12645@@ -339,13 +339,16 @@ static void parse_elf(void *output)
12646 case PT_LOAD:
12647 #ifdef CONFIG_RELOCATABLE
12648 dest = output;
12649- dest += (phdr->p_paddr - LOAD_PHYSICAL_ADDR);
12650+ dest += (phdr->p_paddr - ____LOAD_PHYSICAL_ADDR);
12651 #else
12652 dest = (void *)(phdr->p_paddr);
12653 #endif
12654 memcpy(dest,
12655 output + phdr->p_offset,
12656 phdr->p_filesz);
12657+ if (i)
12658+ memset(prev, 0xff, dest - prev);
12659+ prev = dest + phdr->p_filesz;
12660 break;
12661 default: /* Ignore other PT_* */ break;
12662 }
12663@@ -395,7 +398,7 @@ asmlinkage __visible void *decompress_kernel(void *rmode, memptr heap,
12664 error("Destination address too large");
12665 #endif
12666 #ifndef CONFIG_RELOCATABLE
12667- if ((unsigned long)output != LOAD_PHYSICAL_ADDR)
12668+ if ((unsigned long)output != ____LOAD_PHYSICAL_ADDR)
12669 error("Wrong destination address");
12670 #endif
12671
12672diff --git a/arch/x86/boot/cpucheck.c b/arch/x86/boot/cpucheck.c
12673index 1fd7d57..0f7d096 100644
12674--- a/arch/x86/boot/cpucheck.c
12675+++ b/arch/x86/boot/cpucheck.c
12676@@ -125,9 +125,9 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr)
12677 u32 ecx = MSR_K7_HWCR;
12678 u32 eax, edx;
12679
12680- asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
12681+ asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
12682 eax &= ~(1 << 15);
12683- asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
12684+ asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
12685
12686 get_cpuflags(); /* Make sure it really did something */
12687 err = check_cpuflags();
12688@@ -140,9 +140,9 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr)
12689 u32 ecx = MSR_VIA_FCR;
12690 u32 eax, edx;
12691
12692- asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
12693+ asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
12694 eax |= (1<<1)|(1<<7);
12695- asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
12696+ asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
12697
12698 set_bit(X86_FEATURE_CX8, cpu.flags);
12699 err = check_cpuflags();
12700@@ -153,12 +153,12 @@ int check_cpu(int *cpu_level_ptr, int *req_level_ptr, u32 **err_flags_ptr)
12701 u32 eax, edx;
12702 u32 level = 1;
12703
12704- asm("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
12705- asm("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx));
12706- asm("cpuid"
12707+ asm volatile("rdmsr" : "=a" (eax), "=d" (edx) : "c" (ecx));
12708+ asm volatile("wrmsr" : : "a" (~0), "d" (edx), "c" (ecx));
12709+ asm volatile("cpuid"
12710 : "+a" (level), "=d" (cpu.flags[0])
12711 : : "ecx", "ebx");
12712- asm("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
12713+ asm volatile("wrmsr" : : "a" (eax), "d" (edx), "c" (ecx));
12714
12715 err = check_cpuflags();
12716 } else if (err == 0x01 &&
12717diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
12718index 84c2234..3ef6360 100644
12719--- a/arch/x86/boot/header.S
12720+++ b/arch/x86/boot/header.S
12721@@ -420,10 +420,14 @@ setup_data: .quad 0 # 64-bit physical pointer to
12722 # single linked list of
12723 # struct setup_data
12724
12725-pref_address: .quad LOAD_PHYSICAL_ADDR # preferred load addr
12726+pref_address: .quad ____LOAD_PHYSICAL_ADDR # preferred load addr
12727
12728 #define ZO_INIT_SIZE (ZO__end - ZO_startup_32 + ZO_z_extract_offset)
12729+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
12730+#define VO_INIT_SIZE (VO__end - VO__text - __PAGE_OFFSET - ____LOAD_PHYSICAL_ADDR)
12731+#else
12732 #define VO_INIT_SIZE (VO__end - VO__text)
12733+#endif
12734 #if ZO_INIT_SIZE > VO_INIT_SIZE
12735 #define INIT_SIZE ZO_INIT_SIZE
12736 #else
12737diff --git a/arch/x86/boot/memory.c b/arch/x86/boot/memory.c
12738index db75d07..8e6d0af 100644
12739--- a/arch/x86/boot/memory.c
12740+++ b/arch/x86/boot/memory.c
12741@@ -19,7 +19,7 @@
12742
12743 static int detect_memory_e820(void)
12744 {
12745- int count = 0;
12746+ unsigned int count = 0;
12747 struct biosregs ireg, oreg;
12748 struct e820entry *desc = boot_params.e820_map;
12749 static struct e820entry buf; /* static so it is zeroed */
12750diff --git a/arch/x86/boot/video-vesa.c b/arch/x86/boot/video-vesa.c
12751index ba3e100..6501b8f 100644
12752--- a/arch/x86/boot/video-vesa.c
12753+++ b/arch/x86/boot/video-vesa.c
12754@@ -201,6 +201,7 @@ static void vesa_store_pm_info(void)
12755
12756 boot_params.screen_info.vesapm_seg = oreg.es;
12757 boot_params.screen_info.vesapm_off = oreg.di;
12758+ boot_params.screen_info.vesapm_size = oreg.cx;
12759 }
12760
12761 /*
12762diff --git a/arch/x86/boot/video.c b/arch/x86/boot/video.c
12763index 43eda28..5ab5fdb 100644
12764--- a/arch/x86/boot/video.c
12765+++ b/arch/x86/boot/video.c
12766@@ -96,7 +96,7 @@ static void store_mode_params(void)
12767 static unsigned int get_entry(void)
12768 {
12769 char entry_buf[4];
12770- int i, len = 0;
12771+ unsigned int i, len = 0;
12772 int key;
12773 unsigned int v;
12774
12775diff --git a/arch/x86/crypto/aes-x86_64-asm_64.S b/arch/x86/crypto/aes-x86_64-asm_64.S
12776index 9105655..41779c1 100644
12777--- a/arch/x86/crypto/aes-x86_64-asm_64.S
12778+++ b/arch/x86/crypto/aes-x86_64-asm_64.S
12779@@ -8,6 +8,8 @@
12780 * including this sentence is retained in full.
12781 */
12782
12783+#include <asm/alternative-asm.h>
12784+
12785 .extern crypto_ft_tab
12786 .extern crypto_it_tab
12787 .extern crypto_fl_tab
12788@@ -70,6 +72,8 @@
12789 je B192; \
12790 leaq 32(r9),r9;
12791
12792+#define ret pax_force_retaddr; ret
12793+
12794 #define epilogue(FUNC,r1,r2,r3,r4,r5,r6,r7,r8,r9) \
12795 movq r1,r2; \
12796 movq r3,r4; \
12797diff --git a/arch/x86/crypto/aesni-intel_asm.S b/arch/x86/crypto/aesni-intel_asm.S
12798index 477e9d7..c92c7d8 100644
12799--- a/arch/x86/crypto/aesni-intel_asm.S
12800+++ b/arch/x86/crypto/aesni-intel_asm.S
12801@@ -31,6 +31,7 @@
12802
12803 #include <linux/linkage.h>
12804 #include <asm/inst.h>
12805+#include <asm/alternative-asm.h>
12806
12807 #ifdef __x86_64__
12808 .data
12809@@ -205,7 +206,7 @@ enc: .octa 0x2
12810 * num_initial_blocks = b mod 4
12811 * encrypt the initial num_initial_blocks blocks and apply ghash on
12812 * the ciphertext
12813-* %r10, %r11, %r12, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers
12814+* %r10, %r11, %r15, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers
12815 * are clobbered
12816 * arg1, %arg2, %arg3, %r14 are used as a pointer only, not modified
12817 */
12818@@ -214,8 +215,8 @@ enc: .octa 0x2
12819 .macro INITIAL_BLOCKS_DEC num_initial_blocks TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \
12820 XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation
12821 mov arg7, %r10 # %r10 = AAD
12822- mov arg8, %r12 # %r12 = aadLen
12823- mov %r12, %r11
12824+ mov arg8, %r15 # %r15 = aadLen
12825+ mov %r15, %r11
12826 pxor %xmm\i, %xmm\i
12827 _get_AAD_loop\num_initial_blocks\operation:
12828 movd (%r10), \TMP1
12829@@ -223,15 +224,15 @@ _get_AAD_loop\num_initial_blocks\operation:
12830 psrldq $4, %xmm\i
12831 pxor \TMP1, %xmm\i
12832 add $4, %r10
12833- sub $4, %r12
12834+ sub $4, %r15
12835 jne _get_AAD_loop\num_initial_blocks\operation
12836 cmp $16, %r11
12837 je _get_AAD_loop2_done\num_initial_blocks\operation
12838- mov $16, %r12
12839+ mov $16, %r15
12840 _get_AAD_loop2\num_initial_blocks\operation:
12841 psrldq $4, %xmm\i
12842- sub $4, %r12
12843- cmp %r11, %r12
12844+ sub $4, %r15
12845+ cmp %r11, %r15
12846 jne _get_AAD_loop2\num_initial_blocks\operation
12847 _get_AAD_loop2_done\num_initial_blocks\operation:
12848 movdqa SHUF_MASK(%rip), %xmm14
12849@@ -443,7 +444,7 @@ _initial_blocks_done\num_initial_blocks\operation:
12850 * num_initial_blocks = b mod 4
12851 * encrypt the initial num_initial_blocks blocks and apply ghash on
12852 * the ciphertext
12853-* %r10, %r11, %r12, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers
12854+* %r10, %r11, %r15, %rax, %xmm5, %xmm6, %xmm7, %xmm8, %xmm9 registers
12855 * are clobbered
12856 * arg1, %arg2, %arg3, %r14 are used as a pointer only, not modified
12857 */
12858@@ -452,8 +453,8 @@ _initial_blocks_done\num_initial_blocks\operation:
12859 .macro INITIAL_BLOCKS_ENC num_initial_blocks TMP1 TMP2 TMP3 TMP4 TMP5 XMM0 XMM1 \
12860 XMM2 XMM3 XMM4 XMMDst TMP6 TMP7 i i_seq operation
12861 mov arg7, %r10 # %r10 = AAD
12862- mov arg8, %r12 # %r12 = aadLen
12863- mov %r12, %r11
12864+ mov arg8, %r15 # %r15 = aadLen
12865+ mov %r15, %r11
12866 pxor %xmm\i, %xmm\i
12867 _get_AAD_loop\num_initial_blocks\operation:
12868 movd (%r10), \TMP1
12869@@ -461,15 +462,15 @@ _get_AAD_loop\num_initial_blocks\operation:
12870 psrldq $4, %xmm\i
12871 pxor \TMP1, %xmm\i
12872 add $4, %r10
12873- sub $4, %r12
12874+ sub $4, %r15
12875 jne _get_AAD_loop\num_initial_blocks\operation
12876 cmp $16, %r11
12877 je _get_AAD_loop2_done\num_initial_blocks\operation
12878- mov $16, %r12
12879+ mov $16, %r15
12880 _get_AAD_loop2\num_initial_blocks\operation:
12881 psrldq $4, %xmm\i
12882- sub $4, %r12
12883- cmp %r11, %r12
12884+ sub $4, %r15
12885+ cmp %r11, %r15
12886 jne _get_AAD_loop2\num_initial_blocks\operation
12887 _get_AAD_loop2_done\num_initial_blocks\operation:
12888 movdqa SHUF_MASK(%rip), %xmm14
12889@@ -1269,7 +1270,7 @@ TMP7 XMM1 XMM2 XMM3 XMM4 XMMDst
12890 *
12891 *****************************************************************************/
12892 ENTRY(aesni_gcm_dec)
12893- push %r12
12894+ push %r15
12895 push %r13
12896 push %r14
12897 mov %rsp, %r14
12898@@ -1279,8 +1280,8 @@ ENTRY(aesni_gcm_dec)
12899 */
12900 sub $VARIABLE_OFFSET, %rsp
12901 and $~63, %rsp # align rsp to 64 bytes
12902- mov %arg6, %r12
12903- movdqu (%r12), %xmm13 # %xmm13 = HashKey
12904+ mov %arg6, %r15
12905+ movdqu (%r15), %xmm13 # %xmm13 = HashKey
12906 movdqa SHUF_MASK(%rip), %xmm2
12907 PSHUFB_XMM %xmm2, %xmm13
12908
12909@@ -1308,10 +1309,10 @@ ENTRY(aesni_gcm_dec)
12910 movdqa %xmm13, HashKey(%rsp) # store HashKey<<1 (mod poly)
12911 mov %arg4, %r13 # save the number of bytes of plaintext/ciphertext
12912 and $-16, %r13 # %r13 = %r13 - (%r13 mod 16)
12913- mov %r13, %r12
12914- and $(3<<4), %r12
12915+ mov %r13, %r15
12916+ and $(3<<4), %r15
12917 jz _initial_num_blocks_is_0_decrypt
12918- cmp $(2<<4), %r12
12919+ cmp $(2<<4), %r15
12920 jb _initial_num_blocks_is_1_decrypt
12921 je _initial_num_blocks_is_2_decrypt
12922 _initial_num_blocks_is_3_decrypt:
12923@@ -1361,16 +1362,16 @@ _zero_cipher_left_decrypt:
12924 sub $16, %r11
12925 add %r13, %r11
12926 movdqu (%arg3,%r11,1), %xmm1 # receive the last <16 byte block
12927- lea SHIFT_MASK+16(%rip), %r12
12928- sub %r13, %r12
12929+ lea SHIFT_MASK+16(%rip), %r15
12930+ sub %r13, %r15
12931 # adjust the shuffle mask pointer to be able to shift 16-%r13 bytes
12932 # (%r13 is the number of bytes in plaintext mod 16)
12933- movdqu (%r12), %xmm2 # get the appropriate shuffle mask
12934+ movdqu (%r15), %xmm2 # get the appropriate shuffle mask
12935 PSHUFB_XMM %xmm2, %xmm1 # right shift 16-%r13 butes
12936
12937 movdqa %xmm1, %xmm2
12938 pxor %xmm1, %xmm0 # Ciphertext XOR E(K, Yn)
12939- movdqu ALL_F-SHIFT_MASK(%r12), %xmm1
12940+ movdqu ALL_F-SHIFT_MASK(%r15), %xmm1
12941 # get the appropriate mask to mask out top 16-%r13 bytes of %xmm0
12942 pand %xmm1, %xmm0 # mask out top 16-%r13 bytes of %xmm0
12943 pand %xmm1, %xmm2
12944@@ -1399,9 +1400,9 @@ _less_than_8_bytes_left_decrypt:
12945 sub $1, %r13
12946 jne _less_than_8_bytes_left_decrypt
12947 _multiple_of_16_bytes_decrypt:
12948- mov arg8, %r12 # %r13 = aadLen (number of bytes)
12949- shl $3, %r12 # convert into number of bits
12950- movd %r12d, %xmm15 # len(A) in %xmm15
12951+ mov arg8, %r15 # %r13 = aadLen (number of bytes)
12952+ shl $3, %r15 # convert into number of bits
12953+ movd %r15d, %xmm15 # len(A) in %xmm15
12954 shl $3, %arg4 # len(C) in bits (*128)
12955 MOVQ_R64_XMM %arg4, %xmm1
12956 pslldq $8, %xmm15 # %xmm15 = len(A)||0x0000000000000000
12957@@ -1440,7 +1441,8 @@ _return_T_done_decrypt:
12958 mov %r14, %rsp
12959 pop %r14
12960 pop %r13
12961- pop %r12
12962+ pop %r15
12963+ pax_force_retaddr
12964 ret
12965 ENDPROC(aesni_gcm_dec)
12966
12967@@ -1529,7 +1531,7 @@ ENDPROC(aesni_gcm_dec)
12968 * poly = x^128 + x^127 + x^126 + x^121 + 1
12969 ***************************************************************************/
12970 ENTRY(aesni_gcm_enc)
12971- push %r12
12972+ push %r15
12973 push %r13
12974 push %r14
12975 mov %rsp, %r14
12976@@ -1539,8 +1541,8 @@ ENTRY(aesni_gcm_enc)
12977 #
12978 sub $VARIABLE_OFFSET, %rsp
12979 and $~63, %rsp
12980- mov %arg6, %r12
12981- movdqu (%r12), %xmm13
12982+ mov %arg6, %r15
12983+ movdqu (%r15), %xmm13
12984 movdqa SHUF_MASK(%rip), %xmm2
12985 PSHUFB_XMM %xmm2, %xmm13
12986
12987@@ -1564,13 +1566,13 @@ ENTRY(aesni_gcm_enc)
12988 movdqa %xmm13, HashKey(%rsp)
12989 mov %arg4, %r13 # %xmm13 holds HashKey<<1 (mod poly)
12990 and $-16, %r13
12991- mov %r13, %r12
12992+ mov %r13, %r15
12993
12994 # Encrypt first few blocks
12995
12996- and $(3<<4), %r12
12997+ and $(3<<4), %r15
12998 jz _initial_num_blocks_is_0_encrypt
12999- cmp $(2<<4), %r12
13000+ cmp $(2<<4), %r15
13001 jb _initial_num_blocks_is_1_encrypt
13002 je _initial_num_blocks_is_2_encrypt
13003 _initial_num_blocks_is_3_encrypt:
13004@@ -1623,14 +1625,14 @@ _zero_cipher_left_encrypt:
13005 sub $16, %r11
13006 add %r13, %r11
13007 movdqu (%arg3,%r11,1), %xmm1 # receive the last <16 byte blocks
13008- lea SHIFT_MASK+16(%rip), %r12
13009- sub %r13, %r12
13010+ lea SHIFT_MASK+16(%rip), %r15
13011+ sub %r13, %r15
13012 # adjust the shuffle mask pointer to be able to shift 16-r13 bytes
13013 # (%r13 is the number of bytes in plaintext mod 16)
13014- movdqu (%r12), %xmm2 # get the appropriate shuffle mask
13015+ movdqu (%r15), %xmm2 # get the appropriate shuffle mask
13016 PSHUFB_XMM %xmm2, %xmm1 # shift right 16-r13 byte
13017 pxor %xmm1, %xmm0 # Plaintext XOR Encrypt(K, Yn)
13018- movdqu ALL_F-SHIFT_MASK(%r12), %xmm1
13019+ movdqu ALL_F-SHIFT_MASK(%r15), %xmm1
13020 # get the appropriate mask to mask out top 16-r13 bytes of xmm0
13021 pand %xmm1, %xmm0 # mask out top 16-r13 bytes of xmm0
13022 movdqa SHUF_MASK(%rip), %xmm10
13023@@ -1663,9 +1665,9 @@ _less_than_8_bytes_left_encrypt:
13024 sub $1, %r13
13025 jne _less_than_8_bytes_left_encrypt
13026 _multiple_of_16_bytes_encrypt:
13027- mov arg8, %r12 # %r12 = addLen (number of bytes)
13028- shl $3, %r12
13029- movd %r12d, %xmm15 # len(A) in %xmm15
13030+ mov arg8, %r15 # %r15 = addLen (number of bytes)
13031+ shl $3, %r15
13032+ movd %r15d, %xmm15 # len(A) in %xmm15
13033 shl $3, %arg4 # len(C) in bits (*128)
13034 MOVQ_R64_XMM %arg4, %xmm1
13035 pslldq $8, %xmm15 # %xmm15 = len(A)||0x0000000000000000
13036@@ -1704,7 +1706,8 @@ _return_T_done_encrypt:
13037 mov %r14, %rsp
13038 pop %r14
13039 pop %r13
13040- pop %r12
13041+ pop %r15
13042+ pax_force_retaddr
13043 ret
13044 ENDPROC(aesni_gcm_enc)
13045
13046@@ -1722,6 +1725,7 @@ _key_expansion_256a:
13047 pxor %xmm1, %xmm0
13048 movaps %xmm0, (TKEYP)
13049 add $0x10, TKEYP
13050+ pax_force_retaddr
13051 ret
13052 ENDPROC(_key_expansion_128)
13053 ENDPROC(_key_expansion_256a)
13054@@ -1748,6 +1752,7 @@ _key_expansion_192a:
13055 shufps $0b01001110, %xmm2, %xmm1
13056 movaps %xmm1, 0x10(TKEYP)
13057 add $0x20, TKEYP
13058+ pax_force_retaddr
13059 ret
13060 ENDPROC(_key_expansion_192a)
13061
13062@@ -1768,6 +1773,7 @@ _key_expansion_192b:
13063
13064 movaps %xmm0, (TKEYP)
13065 add $0x10, TKEYP
13066+ pax_force_retaddr
13067 ret
13068 ENDPROC(_key_expansion_192b)
13069
13070@@ -1781,6 +1787,7 @@ _key_expansion_256b:
13071 pxor %xmm1, %xmm2
13072 movaps %xmm2, (TKEYP)
13073 add $0x10, TKEYP
13074+ pax_force_retaddr
13075 ret
13076 ENDPROC(_key_expansion_256b)
13077
13078@@ -1894,6 +1901,7 @@ ENTRY(aesni_set_key)
13079 #ifndef __x86_64__
13080 popl KEYP
13081 #endif
13082+ pax_force_retaddr
13083 ret
13084 ENDPROC(aesni_set_key)
13085
13086@@ -1916,6 +1924,7 @@ ENTRY(aesni_enc)
13087 popl KLEN
13088 popl KEYP
13089 #endif
13090+ pax_force_retaddr
13091 ret
13092 ENDPROC(aesni_enc)
13093
13094@@ -1974,6 +1983,7 @@ _aesni_enc1:
13095 AESENC KEY STATE
13096 movaps 0x70(TKEYP), KEY
13097 AESENCLAST KEY STATE
13098+ pax_force_retaddr
13099 ret
13100 ENDPROC(_aesni_enc1)
13101
13102@@ -2083,6 +2093,7 @@ _aesni_enc4:
13103 AESENCLAST KEY STATE2
13104 AESENCLAST KEY STATE3
13105 AESENCLAST KEY STATE4
13106+ pax_force_retaddr
13107 ret
13108 ENDPROC(_aesni_enc4)
13109
13110@@ -2106,6 +2117,7 @@ ENTRY(aesni_dec)
13111 popl KLEN
13112 popl KEYP
13113 #endif
13114+ pax_force_retaddr
13115 ret
13116 ENDPROC(aesni_dec)
13117
13118@@ -2164,6 +2176,7 @@ _aesni_dec1:
13119 AESDEC KEY STATE
13120 movaps 0x70(TKEYP), KEY
13121 AESDECLAST KEY STATE
13122+ pax_force_retaddr
13123 ret
13124 ENDPROC(_aesni_dec1)
13125
13126@@ -2273,6 +2286,7 @@ _aesni_dec4:
13127 AESDECLAST KEY STATE2
13128 AESDECLAST KEY STATE3
13129 AESDECLAST KEY STATE4
13130+ pax_force_retaddr
13131 ret
13132 ENDPROC(_aesni_dec4)
13133
13134@@ -2331,6 +2345,7 @@ ENTRY(aesni_ecb_enc)
13135 popl KEYP
13136 popl LEN
13137 #endif
13138+ pax_force_retaddr
13139 ret
13140 ENDPROC(aesni_ecb_enc)
13141
13142@@ -2390,6 +2405,7 @@ ENTRY(aesni_ecb_dec)
13143 popl KEYP
13144 popl LEN
13145 #endif
13146+ pax_force_retaddr
13147 ret
13148 ENDPROC(aesni_ecb_dec)
13149
13150@@ -2432,6 +2448,7 @@ ENTRY(aesni_cbc_enc)
13151 popl LEN
13152 popl IVP
13153 #endif
13154+ pax_force_retaddr
13155 ret
13156 ENDPROC(aesni_cbc_enc)
13157
13158@@ -2523,6 +2540,7 @@ ENTRY(aesni_cbc_dec)
13159 popl LEN
13160 popl IVP
13161 #endif
13162+ pax_force_retaddr
13163 ret
13164 ENDPROC(aesni_cbc_dec)
13165
13166@@ -2550,6 +2568,7 @@ _aesni_inc_init:
13167 mov $1, TCTR_LOW
13168 MOVQ_R64_XMM TCTR_LOW INC
13169 MOVQ_R64_XMM CTR TCTR_LOW
13170+ pax_force_retaddr
13171 ret
13172 ENDPROC(_aesni_inc_init)
13173
13174@@ -2579,6 +2598,7 @@ _aesni_inc:
13175 .Linc_low:
13176 movaps CTR, IV
13177 PSHUFB_XMM BSWAP_MASK IV
13178+ pax_force_retaddr
13179 ret
13180 ENDPROC(_aesni_inc)
13181
13182@@ -2640,6 +2660,7 @@ ENTRY(aesni_ctr_enc)
13183 .Lctr_enc_ret:
13184 movups IV, (IVP)
13185 .Lctr_enc_just_ret:
13186+ pax_force_retaddr
13187 ret
13188 ENDPROC(aesni_ctr_enc)
13189
13190@@ -2766,6 +2787,7 @@ ENTRY(aesni_xts_crypt8)
13191 pxor INC, STATE4
13192 movdqu STATE4, 0x70(OUTP)
13193
13194+ pax_force_retaddr
13195 ret
13196 ENDPROC(aesni_xts_crypt8)
13197
13198diff --git a/arch/x86/crypto/blowfish-x86_64-asm_64.S b/arch/x86/crypto/blowfish-x86_64-asm_64.S
13199index 246c670..466e2d6 100644
13200--- a/arch/x86/crypto/blowfish-x86_64-asm_64.S
13201+++ b/arch/x86/crypto/blowfish-x86_64-asm_64.S
13202@@ -21,6 +21,7 @@
13203 */
13204
13205 #include <linux/linkage.h>
13206+#include <asm/alternative-asm.h>
13207
13208 .file "blowfish-x86_64-asm.S"
13209 .text
13210@@ -149,9 +150,11 @@ ENTRY(__blowfish_enc_blk)
13211 jnz .L__enc_xor;
13212
13213 write_block();
13214+ pax_force_retaddr
13215 ret;
13216 .L__enc_xor:
13217 xor_block();
13218+ pax_force_retaddr
13219 ret;
13220 ENDPROC(__blowfish_enc_blk)
13221
13222@@ -183,6 +186,7 @@ ENTRY(blowfish_dec_blk)
13223
13224 movq %r11, %rbp;
13225
13226+ pax_force_retaddr
13227 ret;
13228 ENDPROC(blowfish_dec_blk)
13229
13230@@ -334,6 +338,7 @@ ENTRY(__blowfish_enc_blk_4way)
13231
13232 popq %rbx;
13233 popq %rbp;
13234+ pax_force_retaddr
13235 ret;
13236
13237 .L__enc_xor4:
13238@@ -341,6 +346,7 @@ ENTRY(__blowfish_enc_blk_4way)
13239
13240 popq %rbx;
13241 popq %rbp;
13242+ pax_force_retaddr
13243 ret;
13244 ENDPROC(__blowfish_enc_blk_4way)
13245
13246@@ -375,5 +381,6 @@ ENTRY(blowfish_dec_blk_4way)
13247 popq %rbx;
13248 popq %rbp;
13249
13250+ pax_force_retaddr
13251 ret;
13252 ENDPROC(blowfish_dec_blk_4way)
13253diff --git a/arch/x86/crypto/camellia-aesni-avx-asm_64.S b/arch/x86/crypto/camellia-aesni-avx-asm_64.S
13254index ce71f92..1dce7ec 100644
13255--- a/arch/x86/crypto/camellia-aesni-avx-asm_64.S
13256+++ b/arch/x86/crypto/camellia-aesni-avx-asm_64.S
13257@@ -16,6 +16,7 @@
13258 */
13259
13260 #include <linux/linkage.h>
13261+#include <asm/alternative-asm.h>
13262
13263 #define CAMELLIA_TABLE_BYTE_LEN 272
13264
13265@@ -191,6 +192,7 @@ roundsm16_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd:
13266 roundsm16(%xmm0, %xmm1, %xmm2, %xmm3, %xmm4, %xmm5, %xmm6, %xmm7,
13267 %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14, %xmm15,
13268 %rcx, (%r9));
13269+ pax_force_retaddr
13270 ret;
13271 ENDPROC(roundsm16_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd)
13272
13273@@ -199,6 +201,7 @@ roundsm16_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab:
13274 roundsm16(%xmm4, %xmm5, %xmm6, %xmm7, %xmm0, %xmm1, %xmm2, %xmm3,
13275 %xmm12, %xmm13, %xmm14, %xmm15, %xmm8, %xmm9, %xmm10, %xmm11,
13276 %rax, (%r9));
13277+ pax_force_retaddr
13278 ret;
13279 ENDPROC(roundsm16_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab)
13280
13281@@ -780,6 +783,7 @@ __camellia_enc_blk16:
13282 %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
13283 %xmm15, (key_table)(CTX, %r8, 8), (%rax), 1 * 16(%rax));
13284
13285+ pax_force_retaddr
13286 ret;
13287
13288 .align 8
13289@@ -865,6 +869,7 @@ __camellia_dec_blk16:
13290 %xmm8, %xmm9, %xmm10, %xmm11, %xmm12, %xmm13, %xmm14,
13291 %xmm15, (key_table)(CTX), (%rax), 1 * 16(%rax));
13292
13293+ pax_force_retaddr
13294 ret;
13295
13296 .align 8
13297@@ -904,6 +909,7 @@ ENTRY(camellia_ecb_enc_16way)
13298 %xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
13299 %xmm8, %rsi);
13300
13301+ pax_force_retaddr
13302 ret;
13303 ENDPROC(camellia_ecb_enc_16way)
13304
13305@@ -932,6 +938,7 @@ ENTRY(camellia_ecb_dec_16way)
13306 %xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
13307 %xmm8, %rsi);
13308
13309+ pax_force_retaddr
13310 ret;
13311 ENDPROC(camellia_ecb_dec_16way)
13312
13313@@ -981,6 +988,7 @@ ENTRY(camellia_cbc_dec_16way)
13314 %xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
13315 %xmm8, %rsi);
13316
13317+ pax_force_retaddr
13318 ret;
13319 ENDPROC(camellia_cbc_dec_16way)
13320
13321@@ -1092,6 +1100,7 @@ ENTRY(camellia_ctr_16way)
13322 %xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
13323 %xmm8, %rsi);
13324
13325+ pax_force_retaddr
13326 ret;
13327 ENDPROC(camellia_ctr_16way)
13328
13329@@ -1234,6 +1243,7 @@ camellia_xts_crypt_16way:
13330 %xmm15, %xmm14, %xmm13, %xmm12, %xmm11, %xmm10, %xmm9,
13331 %xmm8, %rsi);
13332
13333+ pax_force_retaddr
13334 ret;
13335 ENDPROC(camellia_xts_crypt_16way)
13336
13337diff --git a/arch/x86/crypto/camellia-aesni-avx2-asm_64.S b/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
13338index 0e0b886..5a3123c 100644
13339--- a/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
13340+++ b/arch/x86/crypto/camellia-aesni-avx2-asm_64.S
13341@@ -11,6 +11,7 @@
13342 */
13343
13344 #include <linux/linkage.h>
13345+#include <asm/alternative-asm.h>
13346
13347 #define CAMELLIA_TABLE_BYTE_LEN 272
13348
13349@@ -230,6 +231,7 @@ roundsm32_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd:
13350 roundsm32(%ymm0, %ymm1, %ymm2, %ymm3, %ymm4, %ymm5, %ymm6, %ymm7,
13351 %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14, %ymm15,
13352 %rcx, (%r9));
13353+ pax_force_retaddr
13354 ret;
13355 ENDPROC(roundsm32_x0_x1_x2_x3_x4_x5_x6_x7_y0_y1_y2_y3_y4_y5_y6_y7_cd)
13356
13357@@ -238,6 +240,7 @@ roundsm32_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab:
13358 roundsm32(%ymm4, %ymm5, %ymm6, %ymm7, %ymm0, %ymm1, %ymm2, %ymm3,
13359 %ymm12, %ymm13, %ymm14, %ymm15, %ymm8, %ymm9, %ymm10, %ymm11,
13360 %rax, (%r9));
13361+ pax_force_retaddr
13362 ret;
13363 ENDPROC(roundsm32_x4_x5_x6_x7_x0_x1_x2_x3_y4_y5_y6_y7_y0_y1_y2_y3_ab)
13364
13365@@ -820,6 +823,7 @@ __camellia_enc_blk32:
13366 %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14,
13367 %ymm15, (key_table)(CTX, %r8, 8), (%rax), 1 * 32(%rax));
13368
13369+ pax_force_retaddr
13370 ret;
13371
13372 .align 8
13373@@ -905,6 +909,7 @@ __camellia_dec_blk32:
13374 %ymm8, %ymm9, %ymm10, %ymm11, %ymm12, %ymm13, %ymm14,
13375 %ymm15, (key_table)(CTX), (%rax), 1 * 32(%rax));
13376
13377+ pax_force_retaddr
13378 ret;
13379
13380 .align 8
13381@@ -948,6 +953,7 @@ ENTRY(camellia_ecb_enc_32way)
13382
13383 vzeroupper;
13384
13385+ pax_force_retaddr
13386 ret;
13387 ENDPROC(camellia_ecb_enc_32way)
13388
13389@@ -980,6 +986,7 @@ ENTRY(camellia_ecb_dec_32way)
13390
13391 vzeroupper;
13392
13393+ pax_force_retaddr
13394 ret;
13395 ENDPROC(camellia_ecb_dec_32way)
13396
13397@@ -1046,6 +1053,7 @@ ENTRY(camellia_cbc_dec_32way)
13398
13399 vzeroupper;
13400
13401+ pax_force_retaddr
13402 ret;
13403 ENDPROC(camellia_cbc_dec_32way)
13404
13405@@ -1184,6 +1192,7 @@ ENTRY(camellia_ctr_32way)
13406
13407 vzeroupper;
13408
13409+ pax_force_retaddr
13410 ret;
13411 ENDPROC(camellia_ctr_32way)
13412
13413@@ -1349,6 +1358,7 @@ camellia_xts_crypt_32way:
13414
13415 vzeroupper;
13416
13417+ pax_force_retaddr
13418 ret;
13419 ENDPROC(camellia_xts_crypt_32way)
13420
13421diff --git a/arch/x86/crypto/camellia-x86_64-asm_64.S b/arch/x86/crypto/camellia-x86_64-asm_64.S
13422index 310319c..db3d7b5 100644
13423--- a/arch/x86/crypto/camellia-x86_64-asm_64.S
13424+++ b/arch/x86/crypto/camellia-x86_64-asm_64.S
13425@@ -21,6 +21,7 @@
13426 */
13427
13428 #include <linux/linkage.h>
13429+#include <asm/alternative-asm.h>
13430
13431 .file "camellia-x86_64-asm_64.S"
13432 .text
13433@@ -228,12 +229,14 @@ ENTRY(__camellia_enc_blk)
13434 enc_outunpack(mov, RT1);
13435
13436 movq RRBP, %rbp;
13437+ pax_force_retaddr
13438 ret;
13439
13440 .L__enc_xor:
13441 enc_outunpack(xor, RT1);
13442
13443 movq RRBP, %rbp;
13444+ pax_force_retaddr
13445 ret;
13446 ENDPROC(__camellia_enc_blk)
13447
13448@@ -272,6 +275,7 @@ ENTRY(camellia_dec_blk)
13449 dec_outunpack();
13450
13451 movq RRBP, %rbp;
13452+ pax_force_retaddr
13453 ret;
13454 ENDPROC(camellia_dec_blk)
13455
13456@@ -463,6 +467,7 @@ ENTRY(__camellia_enc_blk_2way)
13457
13458 movq RRBP, %rbp;
13459 popq %rbx;
13460+ pax_force_retaddr
13461 ret;
13462
13463 .L__enc2_xor:
13464@@ -470,6 +475,7 @@ ENTRY(__camellia_enc_blk_2way)
13465
13466 movq RRBP, %rbp;
13467 popq %rbx;
13468+ pax_force_retaddr
13469 ret;
13470 ENDPROC(__camellia_enc_blk_2way)
13471
13472@@ -510,5 +516,6 @@ ENTRY(camellia_dec_blk_2way)
13473
13474 movq RRBP, %rbp;
13475 movq RXOR, %rbx;
13476+ pax_force_retaddr
13477 ret;
13478 ENDPROC(camellia_dec_blk_2way)
13479diff --git a/arch/x86/crypto/cast5-avx-x86_64-asm_64.S b/arch/x86/crypto/cast5-avx-x86_64-asm_64.S
13480index c35fd5d..2d8c7db 100644
13481--- a/arch/x86/crypto/cast5-avx-x86_64-asm_64.S
13482+++ b/arch/x86/crypto/cast5-avx-x86_64-asm_64.S
13483@@ -24,6 +24,7 @@
13484 */
13485
13486 #include <linux/linkage.h>
13487+#include <asm/alternative-asm.h>
13488
13489 .file "cast5-avx-x86_64-asm_64.S"
13490
13491@@ -281,6 +282,7 @@ __cast5_enc_blk16:
13492 outunpack_blocks(RR3, RL3, RTMP, RX, RKM);
13493 outunpack_blocks(RR4, RL4, RTMP, RX, RKM);
13494
13495+ pax_force_retaddr
13496 ret;
13497 ENDPROC(__cast5_enc_blk16)
13498
13499@@ -352,6 +354,7 @@ __cast5_dec_blk16:
13500 outunpack_blocks(RR3, RL3, RTMP, RX, RKM);
13501 outunpack_blocks(RR4, RL4, RTMP, RX, RKM);
13502
13503+ pax_force_retaddr
13504 ret;
13505
13506 .L__skip_dec:
13507@@ -388,6 +391,7 @@ ENTRY(cast5_ecb_enc_16way)
13508 vmovdqu RR4, (6*4*4)(%r11);
13509 vmovdqu RL4, (7*4*4)(%r11);
13510
13511+ pax_force_retaddr
13512 ret;
13513 ENDPROC(cast5_ecb_enc_16way)
13514
13515@@ -420,6 +424,7 @@ ENTRY(cast5_ecb_dec_16way)
13516 vmovdqu RR4, (6*4*4)(%r11);
13517 vmovdqu RL4, (7*4*4)(%r11);
13518
13519+ pax_force_retaddr
13520 ret;
13521 ENDPROC(cast5_ecb_dec_16way)
13522
13523@@ -430,10 +435,10 @@ ENTRY(cast5_cbc_dec_16way)
13524 * %rdx: src
13525 */
13526
13527- pushq %r12;
13528+ pushq %r14;
13529
13530 movq %rsi, %r11;
13531- movq %rdx, %r12;
13532+ movq %rdx, %r14;
13533
13534 vmovdqu (0*16)(%rdx), RL1;
13535 vmovdqu (1*16)(%rdx), RR1;
13536@@ -447,16 +452,16 @@ ENTRY(cast5_cbc_dec_16way)
13537 call __cast5_dec_blk16;
13538
13539 /* xor with src */
13540- vmovq (%r12), RX;
13541+ vmovq (%r14), RX;
13542 vpshufd $0x4f, RX, RX;
13543 vpxor RX, RR1, RR1;
13544- vpxor 0*16+8(%r12), RL1, RL1;
13545- vpxor 1*16+8(%r12), RR2, RR2;
13546- vpxor 2*16+8(%r12), RL2, RL2;
13547- vpxor 3*16+8(%r12), RR3, RR3;
13548- vpxor 4*16+8(%r12), RL3, RL3;
13549- vpxor 5*16+8(%r12), RR4, RR4;
13550- vpxor 6*16+8(%r12), RL4, RL4;
13551+ vpxor 0*16+8(%r14), RL1, RL1;
13552+ vpxor 1*16+8(%r14), RR2, RR2;
13553+ vpxor 2*16+8(%r14), RL2, RL2;
13554+ vpxor 3*16+8(%r14), RR3, RR3;
13555+ vpxor 4*16+8(%r14), RL3, RL3;
13556+ vpxor 5*16+8(%r14), RR4, RR4;
13557+ vpxor 6*16+8(%r14), RL4, RL4;
13558
13559 vmovdqu RR1, (0*16)(%r11);
13560 vmovdqu RL1, (1*16)(%r11);
13561@@ -467,8 +472,9 @@ ENTRY(cast5_cbc_dec_16way)
13562 vmovdqu RR4, (6*16)(%r11);
13563 vmovdqu RL4, (7*16)(%r11);
13564
13565- popq %r12;
13566+ popq %r14;
13567
13568+ pax_force_retaddr
13569 ret;
13570 ENDPROC(cast5_cbc_dec_16way)
13571
13572@@ -480,10 +486,10 @@ ENTRY(cast5_ctr_16way)
13573 * %rcx: iv (big endian, 64bit)
13574 */
13575
13576- pushq %r12;
13577+ pushq %r14;
13578
13579 movq %rsi, %r11;
13580- movq %rdx, %r12;
13581+ movq %rdx, %r14;
13582
13583 vpcmpeqd RTMP, RTMP, RTMP;
13584 vpsrldq $8, RTMP, RTMP; /* low: -1, high: 0 */
13585@@ -523,14 +529,14 @@ ENTRY(cast5_ctr_16way)
13586 call __cast5_enc_blk16;
13587
13588 /* dst = src ^ iv */
13589- vpxor (0*16)(%r12), RR1, RR1;
13590- vpxor (1*16)(%r12), RL1, RL1;
13591- vpxor (2*16)(%r12), RR2, RR2;
13592- vpxor (3*16)(%r12), RL2, RL2;
13593- vpxor (4*16)(%r12), RR3, RR3;
13594- vpxor (5*16)(%r12), RL3, RL3;
13595- vpxor (6*16)(%r12), RR4, RR4;
13596- vpxor (7*16)(%r12), RL4, RL4;
13597+ vpxor (0*16)(%r14), RR1, RR1;
13598+ vpxor (1*16)(%r14), RL1, RL1;
13599+ vpxor (2*16)(%r14), RR2, RR2;
13600+ vpxor (3*16)(%r14), RL2, RL2;
13601+ vpxor (4*16)(%r14), RR3, RR3;
13602+ vpxor (5*16)(%r14), RL3, RL3;
13603+ vpxor (6*16)(%r14), RR4, RR4;
13604+ vpxor (7*16)(%r14), RL4, RL4;
13605 vmovdqu RR1, (0*16)(%r11);
13606 vmovdqu RL1, (1*16)(%r11);
13607 vmovdqu RR2, (2*16)(%r11);
13608@@ -540,7 +546,8 @@ ENTRY(cast5_ctr_16way)
13609 vmovdqu RR4, (6*16)(%r11);
13610 vmovdqu RL4, (7*16)(%r11);
13611
13612- popq %r12;
13613+ popq %r14;
13614
13615+ pax_force_retaddr
13616 ret;
13617 ENDPROC(cast5_ctr_16way)
13618diff --git a/arch/x86/crypto/cast6-avx-x86_64-asm_64.S b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
13619index e3531f8..e123f35 100644
13620--- a/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
13621+++ b/arch/x86/crypto/cast6-avx-x86_64-asm_64.S
13622@@ -24,6 +24,7 @@
13623 */
13624
13625 #include <linux/linkage.h>
13626+#include <asm/alternative-asm.h>
13627 #include "glue_helper-asm-avx.S"
13628
13629 .file "cast6-avx-x86_64-asm_64.S"
13630@@ -295,6 +296,7 @@ __cast6_enc_blk8:
13631 outunpack_blocks(RA1, RB1, RC1, RD1, RTMP, RX, RKRF, RKM);
13632 outunpack_blocks(RA2, RB2, RC2, RD2, RTMP, RX, RKRF, RKM);
13633
13634+ pax_force_retaddr
13635 ret;
13636 ENDPROC(__cast6_enc_blk8)
13637
13638@@ -340,6 +342,7 @@ __cast6_dec_blk8:
13639 outunpack_blocks(RA1, RB1, RC1, RD1, RTMP, RX, RKRF, RKM);
13640 outunpack_blocks(RA2, RB2, RC2, RD2, RTMP, RX, RKRF, RKM);
13641
13642+ pax_force_retaddr
13643 ret;
13644 ENDPROC(__cast6_dec_blk8)
13645
13646@@ -358,6 +361,7 @@ ENTRY(cast6_ecb_enc_8way)
13647
13648 store_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
13649
13650+ pax_force_retaddr
13651 ret;
13652 ENDPROC(cast6_ecb_enc_8way)
13653
13654@@ -376,6 +380,7 @@ ENTRY(cast6_ecb_dec_8way)
13655
13656 store_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
13657
13658+ pax_force_retaddr
13659 ret;
13660 ENDPROC(cast6_ecb_dec_8way)
13661
13662@@ -386,19 +391,20 @@ ENTRY(cast6_cbc_dec_8way)
13663 * %rdx: src
13664 */
13665
13666- pushq %r12;
13667+ pushq %r14;
13668
13669 movq %rsi, %r11;
13670- movq %rdx, %r12;
13671+ movq %rdx, %r14;
13672
13673 load_8way(%rdx, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
13674
13675 call __cast6_dec_blk8;
13676
13677- store_cbc_8way(%r12, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
13678+ store_cbc_8way(%r14, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
13679
13680- popq %r12;
13681+ popq %r14;
13682
13683+ pax_force_retaddr
13684 ret;
13685 ENDPROC(cast6_cbc_dec_8way)
13686
13687@@ -410,20 +416,21 @@ ENTRY(cast6_ctr_8way)
13688 * %rcx: iv (little endian, 128bit)
13689 */
13690
13691- pushq %r12;
13692+ pushq %r14;
13693
13694 movq %rsi, %r11;
13695- movq %rdx, %r12;
13696+ movq %rdx, %r14;
13697
13698 load_ctr_8way(%rcx, .Lbswap128_mask, RA1, RB1, RC1, RD1, RA2, RB2, RC2,
13699 RD2, RX, RKR, RKM);
13700
13701 call __cast6_enc_blk8;
13702
13703- store_ctr_8way(%r12, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
13704+ store_ctr_8way(%r14, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
13705
13706- popq %r12;
13707+ popq %r14;
13708
13709+ pax_force_retaddr
13710 ret;
13711 ENDPROC(cast6_ctr_8way)
13712
13713@@ -446,6 +453,7 @@ ENTRY(cast6_xts_enc_8way)
13714 /* dst <= regs xor IVs(in dst) */
13715 store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
13716
13717+ pax_force_retaddr
13718 ret;
13719 ENDPROC(cast6_xts_enc_8way)
13720
13721@@ -468,5 +476,6 @@ ENTRY(cast6_xts_dec_8way)
13722 /* dst <= regs xor IVs(in dst) */
13723 store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
13724
13725+ pax_force_retaddr
13726 ret;
13727 ENDPROC(cast6_xts_dec_8way)
13728diff --git a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
13729index dbc4339..de6e120 100644
13730--- a/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
13731+++ b/arch/x86/crypto/crc32c-pcl-intel-asm_64.S
13732@@ -45,6 +45,7 @@
13733
13734 #include <asm/inst.h>
13735 #include <linux/linkage.h>
13736+#include <asm/alternative-asm.h>
13737
13738 ## ISCSI CRC 32 Implementation with crc32 and pclmulqdq Instruction
13739
13740@@ -312,6 +313,7 @@ do_return:
13741 popq %rsi
13742 popq %rdi
13743 popq %rbx
13744+ pax_force_retaddr
13745 ret
13746
13747 ################################################################
13748diff --git a/arch/x86/crypto/ghash-clmulni-intel_asm.S b/arch/x86/crypto/ghash-clmulni-intel_asm.S
13749index 185fad4..ff4cd36 100644
13750--- a/arch/x86/crypto/ghash-clmulni-intel_asm.S
13751+++ b/arch/x86/crypto/ghash-clmulni-intel_asm.S
13752@@ -18,6 +18,7 @@
13753
13754 #include <linux/linkage.h>
13755 #include <asm/inst.h>
13756+#include <asm/alternative-asm.h>
13757
13758 .data
13759
13760@@ -89,6 +90,7 @@ __clmul_gf128mul_ble:
13761 psrlq $1, T2
13762 pxor T2, T1
13763 pxor T1, DATA
13764+ pax_force_retaddr
13765 ret
13766 ENDPROC(__clmul_gf128mul_ble)
13767
13768@@ -101,6 +103,7 @@ ENTRY(clmul_ghash_mul)
13769 call __clmul_gf128mul_ble
13770 PSHUFB_XMM BSWAP DATA
13771 movups DATA, (%rdi)
13772+ pax_force_retaddr
13773 ret
13774 ENDPROC(clmul_ghash_mul)
13775
13776@@ -128,5 +131,6 @@ ENTRY(clmul_ghash_update)
13777 PSHUFB_XMM BSWAP DATA
13778 movups DATA, (%rdi)
13779 .Lupdate_just_ret:
13780+ pax_force_retaddr
13781 ret
13782 ENDPROC(clmul_ghash_update)
13783diff --git a/arch/x86/crypto/salsa20-x86_64-asm_64.S b/arch/x86/crypto/salsa20-x86_64-asm_64.S
13784index 9279e0b..c4b3d2c 100644
13785--- a/arch/x86/crypto/salsa20-x86_64-asm_64.S
13786+++ b/arch/x86/crypto/salsa20-x86_64-asm_64.S
13787@@ -1,4 +1,5 @@
13788 #include <linux/linkage.h>
13789+#include <asm/alternative-asm.h>
13790
13791 # enter salsa20_encrypt_bytes
13792 ENTRY(salsa20_encrypt_bytes)
13793@@ -789,6 +790,7 @@ ENTRY(salsa20_encrypt_bytes)
13794 add %r11,%rsp
13795 mov %rdi,%rax
13796 mov %rsi,%rdx
13797+ pax_force_retaddr
13798 ret
13799 # bytesatleast65:
13800 ._bytesatleast65:
13801@@ -889,6 +891,7 @@ ENTRY(salsa20_keysetup)
13802 add %r11,%rsp
13803 mov %rdi,%rax
13804 mov %rsi,%rdx
13805+ pax_force_retaddr
13806 ret
13807 ENDPROC(salsa20_keysetup)
13808
13809@@ -914,5 +917,6 @@ ENTRY(salsa20_ivsetup)
13810 add %r11,%rsp
13811 mov %rdi,%rax
13812 mov %rsi,%rdx
13813+ pax_force_retaddr
13814 ret
13815 ENDPROC(salsa20_ivsetup)
13816diff --git a/arch/x86/crypto/serpent-avx-x86_64-asm_64.S b/arch/x86/crypto/serpent-avx-x86_64-asm_64.S
13817index 2f202f4..d9164d6 100644
13818--- a/arch/x86/crypto/serpent-avx-x86_64-asm_64.S
13819+++ b/arch/x86/crypto/serpent-avx-x86_64-asm_64.S
13820@@ -24,6 +24,7 @@
13821 */
13822
13823 #include <linux/linkage.h>
13824+#include <asm/alternative-asm.h>
13825 #include "glue_helper-asm-avx.S"
13826
13827 .file "serpent-avx-x86_64-asm_64.S"
13828@@ -618,6 +619,7 @@ __serpent_enc_blk8_avx:
13829 write_blocks(RA1, RB1, RC1, RD1, RK0, RK1, RK2);
13830 write_blocks(RA2, RB2, RC2, RD2, RK0, RK1, RK2);
13831
13832+ pax_force_retaddr
13833 ret;
13834 ENDPROC(__serpent_enc_blk8_avx)
13835
13836@@ -672,6 +674,7 @@ __serpent_dec_blk8_avx:
13837 write_blocks(RC1, RD1, RB1, RE1, RK0, RK1, RK2);
13838 write_blocks(RC2, RD2, RB2, RE2, RK0, RK1, RK2);
13839
13840+ pax_force_retaddr
13841 ret;
13842 ENDPROC(__serpent_dec_blk8_avx)
13843
13844@@ -688,6 +691,7 @@ ENTRY(serpent_ecb_enc_8way_avx)
13845
13846 store_8way(%rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
13847
13848+ pax_force_retaddr
13849 ret;
13850 ENDPROC(serpent_ecb_enc_8way_avx)
13851
13852@@ -704,6 +708,7 @@ ENTRY(serpent_ecb_dec_8way_avx)
13853
13854 store_8way(%rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2);
13855
13856+ pax_force_retaddr
13857 ret;
13858 ENDPROC(serpent_ecb_dec_8way_avx)
13859
13860@@ -720,6 +725,7 @@ ENTRY(serpent_cbc_dec_8way_avx)
13861
13862 store_cbc_8way(%rdx, %rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2);
13863
13864+ pax_force_retaddr
13865 ret;
13866 ENDPROC(serpent_cbc_dec_8way_avx)
13867
13868@@ -738,6 +744,7 @@ ENTRY(serpent_ctr_8way_avx)
13869
13870 store_ctr_8way(%rdx, %rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
13871
13872+ pax_force_retaddr
13873 ret;
13874 ENDPROC(serpent_ctr_8way_avx)
13875
13876@@ -758,6 +765,7 @@ ENTRY(serpent_xts_enc_8way_avx)
13877 /* dst <= regs xor IVs(in dst) */
13878 store_xts_8way(%rsi, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
13879
13880+ pax_force_retaddr
13881 ret;
13882 ENDPROC(serpent_xts_enc_8way_avx)
13883
13884@@ -778,5 +786,6 @@ ENTRY(serpent_xts_dec_8way_avx)
13885 /* dst <= regs xor IVs(in dst) */
13886 store_xts_8way(%rsi, RC1, RD1, RB1, RE1, RC2, RD2, RB2, RE2);
13887
13888+ pax_force_retaddr
13889 ret;
13890 ENDPROC(serpent_xts_dec_8way_avx)
13891diff --git a/arch/x86/crypto/serpent-avx2-asm_64.S b/arch/x86/crypto/serpent-avx2-asm_64.S
13892index b222085..abd483c 100644
13893--- a/arch/x86/crypto/serpent-avx2-asm_64.S
13894+++ b/arch/x86/crypto/serpent-avx2-asm_64.S
13895@@ -15,6 +15,7 @@
13896 */
13897
13898 #include <linux/linkage.h>
13899+#include <asm/alternative-asm.h>
13900 #include "glue_helper-asm-avx2.S"
13901
13902 .file "serpent-avx2-asm_64.S"
13903@@ -610,6 +611,7 @@ __serpent_enc_blk16:
13904 write_blocks(RA1, RB1, RC1, RD1, RK0, RK1, RK2);
13905 write_blocks(RA2, RB2, RC2, RD2, RK0, RK1, RK2);
13906
13907+ pax_force_retaddr
13908 ret;
13909 ENDPROC(__serpent_enc_blk16)
13910
13911@@ -664,6 +666,7 @@ __serpent_dec_blk16:
13912 write_blocks(RC1, RD1, RB1, RE1, RK0, RK1, RK2);
13913 write_blocks(RC2, RD2, RB2, RE2, RK0, RK1, RK2);
13914
13915+ pax_force_retaddr
13916 ret;
13917 ENDPROC(__serpent_dec_blk16)
13918
13919@@ -684,6 +687,7 @@ ENTRY(serpent_ecb_enc_16way)
13920
13921 vzeroupper;
13922
13923+ pax_force_retaddr
13924 ret;
13925 ENDPROC(serpent_ecb_enc_16way)
13926
13927@@ -704,6 +708,7 @@ ENTRY(serpent_ecb_dec_16way)
13928
13929 vzeroupper;
13930
13931+ pax_force_retaddr
13932 ret;
13933 ENDPROC(serpent_ecb_dec_16way)
13934
13935@@ -725,6 +730,7 @@ ENTRY(serpent_cbc_dec_16way)
13936
13937 vzeroupper;
13938
13939+ pax_force_retaddr
13940 ret;
13941 ENDPROC(serpent_cbc_dec_16way)
13942
13943@@ -748,6 +754,7 @@ ENTRY(serpent_ctr_16way)
13944
13945 vzeroupper;
13946
13947+ pax_force_retaddr
13948 ret;
13949 ENDPROC(serpent_ctr_16way)
13950
13951@@ -772,6 +779,7 @@ ENTRY(serpent_xts_enc_16way)
13952
13953 vzeroupper;
13954
13955+ pax_force_retaddr
13956 ret;
13957 ENDPROC(serpent_xts_enc_16way)
13958
13959@@ -796,5 +804,6 @@ ENTRY(serpent_xts_dec_16way)
13960
13961 vzeroupper;
13962
13963+ pax_force_retaddr
13964 ret;
13965 ENDPROC(serpent_xts_dec_16way)
13966diff --git a/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S
13967index acc066c..1559cc4 100644
13968--- a/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S
13969+++ b/arch/x86/crypto/serpent-sse2-x86_64-asm_64.S
13970@@ -25,6 +25,7 @@
13971 */
13972
13973 #include <linux/linkage.h>
13974+#include <asm/alternative-asm.h>
13975
13976 .file "serpent-sse2-x86_64-asm_64.S"
13977 .text
13978@@ -690,12 +691,14 @@ ENTRY(__serpent_enc_blk_8way)
13979 write_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2);
13980 write_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2);
13981
13982+ pax_force_retaddr
13983 ret;
13984
13985 .L__enc_xor8:
13986 xor_blocks(%rsi, RA1, RB1, RC1, RD1, RK0, RK1, RK2);
13987 xor_blocks(%rax, RA2, RB2, RC2, RD2, RK0, RK1, RK2);
13988
13989+ pax_force_retaddr
13990 ret;
13991 ENDPROC(__serpent_enc_blk_8way)
13992
13993@@ -750,5 +753,6 @@ ENTRY(serpent_dec_blk_8way)
13994 write_blocks(%rsi, RC1, RD1, RB1, RE1, RK0, RK1, RK2);
13995 write_blocks(%rax, RC2, RD2, RB2, RE2, RK0, RK1, RK2);
13996
13997+ pax_force_retaddr
13998 ret;
13999 ENDPROC(serpent_dec_blk_8way)
14000diff --git a/arch/x86/crypto/sha1_ssse3_asm.S b/arch/x86/crypto/sha1_ssse3_asm.S
14001index a410950..9dfe7ad 100644
14002--- a/arch/x86/crypto/sha1_ssse3_asm.S
14003+++ b/arch/x86/crypto/sha1_ssse3_asm.S
14004@@ -29,6 +29,7 @@
14005 */
14006
14007 #include <linux/linkage.h>
14008+#include <asm/alternative-asm.h>
14009
14010 #define CTX %rdi // arg1
14011 #define BUF %rsi // arg2
14012@@ -75,9 +76,9 @@
14013
14014 push %rbx
14015 push %rbp
14016- push %r12
14017+ push %r14
14018
14019- mov %rsp, %r12
14020+ mov %rsp, %r14
14021 sub $64, %rsp # allocate workspace
14022 and $~15, %rsp # align stack
14023
14024@@ -99,11 +100,12 @@
14025 xor %rax, %rax
14026 rep stosq
14027
14028- mov %r12, %rsp # deallocate workspace
14029+ mov %r14, %rsp # deallocate workspace
14030
14031- pop %r12
14032+ pop %r14
14033 pop %rbp
14034 pop %rbx
14035+ pax_force_retaddr
14036 ret
14037
14038 ENDPROC(\name)
14039diff --git a/arch/x86/crypto/sha256-avx-asm.S b/arch/x86/crypto/sha256-avx-asm.S
14040index 642f156..51a513c 100644
14041--- a/arch/x86/crypto/sha256-avx-asm.S
14042+++ b/arch/x86/crypto/sha256-avx-asm.S
14043@@ -49,6 +49,7 @@
14044
14045 #ifdef CONFIG_AS_AVX
14046 #include <linux/linkage.h>
14047+#include <asm/alternative-asm.h>
14048
14049 ## assume buffers not aligned
14050 #define VMOVDQ vmovdqu
14051@@ -460,6 +461,7 @@ done_hash:
14052 popq %r13
14053 popq %rbp
14054 popq %rbx
14055+ pax_force_retaddr
14056 ret
14057 ENDPROC(sha256_transform_avx)
14058
14059diff --git a/arch/x86/crypto/sha256-avx2-asm.S b/arch/x86/crypto/sha256-avx2-asm.S
14060index 9e86944..3795e6a 100644
14061--- a/arch/x86/crypto/sha256-avx2-asm.S
14062+++ b/arch/x86/crypto/sha256-avx2-asm.S
14063@@ -50,6 +50,7 @@
14064
14065 #ifdef CONFIG_AS_AVX2
14066 #include <linux/linkage.h>
14067+#include <asm/alternative-asm.h>
14068
14069 ## assume buffers not aligned
14070 #define VMOVDQ vmovdqu
14071@@ -720,6 +721,7 @@ done_hash:
14072 popq %r12
14073 popq %rbp
14074 popq %rbx
14075+ pax_force_retaddr
14076 ret
14077 ENDPROC(sha256_transform_rorx)
14078
14079diff --git a/arch/x86/crypto/sha256-ssse3-asm.S b/arch/x86/crypto/sha256-ssse3-asm.S
14080index f833b74..8c62a9e 100644
14081--- a/arch/x86/crypto/sha256-ssse3-asm.S
14082+++ b/arch/x86/crypto/sha256-ssse3-asm.S
14083@@ -47,6 +47,7 @@
14084 ########################################################################
14085
14086 #include <linux/linkage.h>
14087+#include <asm/alternative-asm.h>
14088
14089 ## assume buffers not aligned
14090 #define MOVDQ movdqu
14091@@ -471,6 +472,7 @@ done_hash:
14092 popq %rbp
14093 popq %rbx
14094
14095+ pax_force_retaddr
14096 ret
14097 ENDPROC(sha256_transform_ssse3)
14098
14099diff --git a/arch/x86/crypto/sha512-avx-asm.S b/arch/x86/crypto/sha512-avx-asm.S
14100index 974dde9..a823ff9 100644
14101--- a/arch/x86/crypto/sha512-avx-asm.S
14102+++ b/arch/x86/crypto/sha512-avx-asm.S
14103@@ -49,6 +49,7 @@
14104
14105 #ifdef CONFIG_AS_AVX
14106 #include <linux/linkage.h>
14107+#include <asm/alternative-asm.h>
14108
14109 .text
14110
14111@@ -364,6 +365,7 @@ updateblock:
14112 mov frame_RSPSAVE(%rsp), %rsp
14113
14114 nowork:
14115+ pax_force_retaddr
14116 ret
14117 ENDPROC(sha512_transform_avx)
14118
14119diff --git a/arch/x86/crypto/sha512-avx2-asm.S b/arch/x86/crypto/sha512-avx2-asm.S
14120index 568b961..ed20c37 100644
14121--- a/arch/x86/crypto/sha512-avx2-asm.S
14122+++ b/arch/x86/crypto/sha512-avx2-asm.S
14123@@ -51,6 +51,7 @@
14124
14125 #ifdef CONFIG_AS_AVX2
14126 #include <linux/linkage.h>
14127+#include <asm/alternative-asm.h>
14128
14129 .text
14130
14131@@ -678,6 +679,7 @@ done_hash:
14132
14133 # Restore Stack Pointer
14134 mov frame_RSPSAVE(%rsp), %rsp
14135+ pax_force_retaddr
14136 ret
14137 ENDPROC(sha512_transform_rorx)
14138
14139diff --git a/arch/x86/crypto/sha512-ssse3-asm.S b/arch/x86/crypto/sha512-ssse3-asm.S
14140index fb56855..6edd768 100644
14141--- a/arch/x86/crypto/sha512-ssse3-asm.S
14142+++ b/arch/x86/crypto/sha512-ssse3-asm.S
14143@@ -48,6 +48,7 @@
14144 ########################################################################
14145
14146 #include <linux/linkage.h>
14147+#include <asm/alternative-asm.h>
14148
14149 .text
14150
14151@@ -363,6 +364,7 @@ updateblock:
14152 mov frame_RSPSAVE(%rsp), %rsp
14153
14154 nowork:
14155+ pax_force_retaddr
14156 ret
14157 ENDPROC(sha512_transform_ssse3)
14158
14159diff --git a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
14160index 0505813..b067311 100644
14161--- a/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
14162+++ b/arch/x86/crypto/twofish-avx-x86_64-asm_64.S
14163@@ -24,6 +24,7 @@
14164 */
14165
14166 #include <linux/linkage.h>
14167+#include <asm/alternative-asm.h>
14168 #include "glue_helper-asm-avx.S"
14169
14170 .file "twofish-avx-x86_64-asm_64.S"
14171@@ -284,6 +285,7 @@ __twofish_enc_blk8:
14172 outunpack_blocks(RC1, RD1, RA1, RB1, RK1, RX0, RY0, RK2);
14173 outunpack_blocks(RC2, RD2, RA2, RB2, RK1, RX0, RY0, RK2);
14174
14175+ pax_force_retaddr
14176 ret;
14177 ENDPROC(__twofish_enc_blk8)
14178
14179@@ -324,6 +326,7 @@ __twofish_dec_blk8:
14180 outunpack_blocks(RA1, RB1, RC1, RD1, RK1, RX0, RY0, RK2);
14181 outunpack_blocks(RA2, RB2, RC2, RD2, RK1, RX0, RY0, RK2);
14182
14183+ pax_force_retaddr
14184 ret;
14185 ENDPROC(__twofish_dec_blk8)
14186
14187@@ -342,6 +345,7 @@ ENTRY(twofish_ecb_enc_8way)
14188
14189 store_8way(%r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
14190
14191+ pax_force_retaddr
14192 ret;
14193 ENDPROC(twofish_ecb_enc_8way)
14194
14195@@ -360,6 +364,7 @@ ENTRY(twofish_ecb_dec_8way)
14196
14197 store_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
14198
14199+ pax_force_retaddr
14200 ret;
14201 ENDPROC(twofish_ecb_dec_8way)
14202
14203@@ -370,19 +375,20 @@ ENTRY(twofish_cbc_dec_8way)
14204 * %rdx: src
14205 */
14206
14207- pushq %r12;
14208+ pushq %r14;
14209
14210 movq %rsi, %r11;
14211- movq %rdx, %r12;
14212+ movq %rdx, %r14;
14213
14214 load_8way(%rdx, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
14215
14216 call __twofish_dec_blk8;
14217
14218- store_cbc_8way(%r12, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
14219+ store_cbc_8way(%r14, %r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
14220
14221- popq %r12;
14222+ popq %r14;
14223
14224+ pax_force_retaddr
14225 ret;
14226 ENDPROC(twofish_cbc_dec_8way)
14227
14228@@ -394,20 +400,21 @@ ENTRY(twofish_ctr_8way)
14229 * %rcx: iv (little endian, 128bit)
14230 */
14231
14232- pushq %r12;
14233+ pushq %r14;
14234
14235 movq %rsi, %r11;
14236- movq %rdx, %r12;
14237+ movq %rdx, %r14;
14238
14239 load_ctr_8way(%rcx, .Lbswap128_mask, RA1, RB1, RC1, RD1, RA2, RB2, RC2,
14240 RD2, RX0, RX1, RY0);
14241
14242 call __twofish_enc_blk8;
14243
14244- store_ctr_8way(%r12, %r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
14245+ store_ctr_8way(%r14, %r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
14246
14247- popq %r12;
14248+ popq %r14;
14249
14250+ pax_force_retaddr
14251 ret;
14252 ENDPROC(twofish_ctr_8way)
14253
14254@@ -430,6 +437,7 @@ ENTRY(twofish_xts_enc_8way)
14255 /* dst <= regs xor IVs(in dst) */
14256 store_xts_8way(%r11, RC1, RD1, RA1, RB1, RC2, RD2, RA2, RB2);
14257
14258+ pax_force_retaddr
14259 ret;
14260 ENDPROC(twofish_xts_enc_8way)
14261
14262@@ -452,5 +460,6 @@ ENTRY(twofish_xts_dec_8way)
14263 /* dst <= regs xor IVs(in dst) */
14264 store_xts_8way(%r11, RA1, RB1, RC1, RD1, RA2, RB2, RC2, RD2);
14265
14266+ pax_force_retaddr
14267 ret;
14268 ENDPROC(twofish_xts_dec_8way)
14269diff --git a/arch/x86/crypto/twofish-x86_64-asm_64-3way.S b/arch/x86/crypto/twofish-x86_64-asm_64-3way.S
14270index 1c3b7ce..02f578d 100644
14271--- a/arch/x86/crypto/twofish-x86_64-asm_64-3way.S
14272+++ b/arch/x86/crypto/twofish-x86_64-asm_64-3way.S
14273@@ -21,6 +21,7 @@
14274 */
14275
14276 #include <linux/linkage.h>
14277+#include <asm/alternative-asm.h>
14278
14279 .file "twofish-x86_64-asm-3way.S"
14280 .text
14281@@ -258,6 +259,7 @@ ENTRY(__twofish_enc_blk_3way)
14282 popq %r13;
14283 popq %r14;
14284 popq %r15;
14285+ pax_force_retaddr
14286 ret;
14287
14288 .L__enc_xor3:
14289@@ -269,6 +271,7 @@ ENTRY(__twofish_enc_blk_3way)
14290 popq %r13;
14291 popq %r14;
14292 popq %r15;
14293+ pax_force_retaddr
14294 ret;
14295 ENDPROC(__twofish_enc_blk_3way)
14296
14297@@ -308,5 +311,6 @@ ENTRY(twofish_dec_blk_3way)
14298 popq %r13;
14299 popq %r14;
14300 popq %r15;
14301+ pax_force_retaddr
14302 ret;
14303 ENDPROC(twofish_dec_blk_3way)
14304diff --git a/arch/x86/crypto/twofish-x86_64-asm_64.S b/arch/x86/crypto/twofish-x86_64-asm_64.S
14305index a039d21..524b8b2 100644
14306--- a/arch/x86/crypto/twofish-x86_64-asm_64.S
14307+++ b/arch/x86/crypto/twofish-x86_64-asm_64.S
14308@@ -22,6 +22,7 @@
14309
14310 #include <linux/linkage.h>
14311 #include <asm/asm-offsets.h>
14312+#include <asm/alternative-asm.h>
14313
14314 #define a_offset 0
14315 #define b_offset 4
14316@@ -265,6 +266,7 @@ ENTRY(twofish_enc_blk)
14317
14318 popq R1
14319 movq $1,%rax
14320+ pax_force_retaddr
14321 ret
14322 ENDPROC(twofish_enc_blk)
14323
14324@@ -317,5 +319,6 @@ ENTRY(twofish_dec_blk)
14325
14326 popq R1
14327 movq $1,%rax
14328+ pax_force_retaddr
14329 ret
14330 ENDPROC(twofish_dec_blk)
14331diff --git a/arch/x86/ia32/ia32_aout.c b/arch/x86/ia32/ia32_aout.c
14332index d21ff89..6da8e6e 100644
14333--- a/arch/x86/ia32/ia32_aout.c
14334+++ b/arch/x86/ia32/ia32_aout.c
14335@@ -153,6 +153,8 @@ static int aout_core_dump(struct coredump_params *cprm)
14336 unsigned long dump_start, dump_size;
14337 struct user32 dump;
14338
14339+ memset(&dump, 0, sizeof(dump));
14340+
14341 fs = get_fs();
14342 set_fs(KERNEL_DS);
14343 has_dumped = 1;
14344diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c
14345index 2206757..85cbcfa 100644
14346--- a/arch/x86/ia32/ia32_signal.c
14347+++ b/arch/x86/ia32/ia32_signal.c
14348@@ -218,7 +218,7 @@ asmlinkage long sys32_sigreturn(void)
14349 if (__get_user(set.sig[0], &frame->sc.oldmask)
14350 || (_COMPAT_NSIG_WORDS > 1
14351 && __copy_from_user((((char *) &set.sig) + 4),
14352- &frame->extramask,
14353+ frame->extramask,
14354 sizeof(frame->extramask))))
14355 goto badframe;
14356
14357@@ -338,7 +338,7 @@ static void __user *get_sigframe(struct ksignal *ksig, struct pt_regs *regs,
14358 sp -= frame_size;
14359 /* Align the stack pointer according to the i386 ABI,
14360 * i.e. so that on function entry ((sp + 4) & 15) == 0. */
14361- sp = ((sp + 4) & -16ul) - 4;
14362+ sp = ((sp - 12) & -16ul) - 4;
14363 return (void __user *) sp;
14364 }
14365
14366@@ -386,7 +386,7 @@ int ia32_setup_frame(int sig, struct ksignal *ksig,
14367 restorer = VDSO32_SYMBOL(current->mm->context.vdso,
14368 sigreturn);
14369 else
14370- restorer = &frame->retcode;
14371+ restorer = frame->retcode;
14372 }
14373
14374 put_user_try {
14375@@ -396,7 +396,7 @@ int ia32_setup_frame(int sig, struct ksignal *ksig,
14376 * These are actually not used anymore, but left because some
14377 * gdb versions depend on them as a marker.
14378 */
14379- put_user_ex(*((u64 *)&code), (u64 __user *)frame->retcode);
14380+ put_user_ex(*((const u64 *)&code), (u64 __user *)frame->retcode);
14381 } put_user_catch(err);
14382
14383 if (err)
14384@@ -438,7 +438,7 @@ int ia32_setup_rt_frame(int sig, struct ksignal *ksig,
14385 0xb8,
14386 __NR_ia32_rt_sigreturn,
14387 0x80cd,
14388- 0,
14389+ 0
14390 };
14391
14392 frame = get_sigframe(ksig, regs, sizeof(*frame), &fpstate);
14393@@ -461,16 +461,18 @@ int ia32_setup_rt_frame(int sig, struct ksignal *ksig,
14394
14395 if (ksig->ka.sa.sa_flags & SA_RESTORER)
14396 restorer = ksig->ka.sa.sa_restorer;
14397+ else if (current->mm->context.vdso)
14398+ /* Return stub is in 32bit vsyscall page */
14399+ restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn);
14400 else
14401- restorer = VDSO32_SYMBOL(current->mm->context.vdso,
14402- rt_sigreturn);
14403+ restorer = frame->retcode;
14404 put_user_ex(ptr_to_compat(restorer), &frame->pretcode);
14405
14406 /*
14407 * Not actually used anymore, but left because some gdb
14408 * versions need it.
14409 */
14410- put_user_ex(*((u64 *)&code), (u64 __user *)frame->retcode);
14411+ put_user_ex(*((const u64 *)&code), (u64 __user *)frame->retcode);
14412 } put_user_catch(err);
14413
14414 err |= copy_siginfo_to_user32(&frame->info, &ksig->info);
14415diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
14416index 4299eb0..c0687a7 100644
14417--- a/arch/x86/ia32/ia32entry.S
14418+++ b/arch/x86/ia32/ia32entry.S
14419@@ -15,8 +15,10 @@
14420 #include <asm/irqflags.h>
14421 #include <asm/asm.h>
14422 #include <asm/smap.h>
14423+#include <asm/pgtable.h>
14424 #include <linux/linkage.h>
14425 #include <linux/err.h>
14426+#include <asm/alternative-asm.h>
14427
14428 /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this. */
14429 #include <linux/elf-em.h>
14430@@ -62,12 +64,12 @@
14431 */
14432 .macro LOAD_ARGS32 offset, _r9=0
14433 .if \_r9
14434- movl \offset+16(%rsp),%r9d
14435+ movl \offset+R9(%rsp),%r9d
14436 .endif
14437- movl \offset+40(%rsp),%ecx
14438- movl \offset+48(%rsp),%edx
14439- movl \offset+56(%rsp),%esi
14440- movl \offset+64(%rsp),%edi
14441+ movl \offset+RCX(%rsp),%ecx
14442+ movl \offset+RDX(%rsp),%edx
14443+ movl \offset+RSI(%rsp),%esi
14444+ movl \offset+RDI(%rsp),%edi
14445 movl %eax,%eax /* zero extension */
14446 .endm
14447
14448@@ -96,6 +98,32 @@ ENTRY(native_irq_enable_sysexit)
14449 ENDPROC(native_irq_enable_sysexit)
14450 #endif
14451
14452+ .macro pax_enter_kernel_user
14453+ pax_set_fptr_mask
14454+#ifdef CONFIG_PAX_MEMORY_UDEREF
14455+ call pax_enter_kernel_user
14456+#endif
14457+ .endm
14458+
14459+ .macro pax_exit_kernel_user
14460+#ifdef CONFIG_PAX_MEMORY_UDEREF
14461+ call pax_exit_kernel_user
14462+#endif
14463+#ifdef CONFIG_PAX_RANDKSTACK
14464+ pushq %rax
14465+ pushq %r11
14466+ call pax_randomize_kstack
14467+ popq %r11
14468+ popq %rax
14469+#endif
14470+ .endm
14471+
14472+ .macro pax_erase_kstack
14473+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
14474+ call pax_erase_kstack
14475+#endif
14476+ .endm
14477+
14478 /*
14479 * 32bit SYSENTER instruction entry.
14480 *
14481@@ -122,12 +150,6 @@ ENTRY(ia32_sysenter_target)
14482 CFI_REGISTER rsp,rbp
14483 SWAPGS_UNSAFE_STACK
14484 movq PER_CPU_VAR(kernel_stack), %rsp
14485- addq $(KERNEL_STACK_OFFSET),%rsp
14486- /*
14487- * No need to follow this irqs on/off section: the syscall
14488- * disabled irqs, here we enable it straight after entry:
14489- */
14490- ENABLE_INTERRUPTS(CLBR_NONE)
14491 movl %ebp,%ebp /* zero extension */
14492 pushq_cfi $__USER32_DS
14493 /*CFI_REL_OFFSET ss,0*/
14494@@ -135,24 +157,49 @@ ENTRY(ia32_sysenter_target)
14495 CFI_REL_OFFSET rsp,0
14496 pushfq_cfi
14497 /*CFI_REL_OFFSET rflags,0*/
14498- movl TI_sysenter_return+THREAD_INFO(%rsp,3*8-KERNEL_STACK_OFFSET),%r10d
14499- CFI_REGISTER rip,r10
14500+ orl $X86_EFLAGS_IF,(%rsp)
14501+ GET_THREAD_INFO(%r11)
14502+ movl TI_sysenter_return(%r11), %r11d
14503+ CFI_REGISTER rip,r11
14504 pushq_cfi $__USER32_CS
14505 /*CFI_REL_OFFSET cs,0*/
14506 movl %eax, %eax
14507- pushq_cfi %r10
14508+ pushq_cfi %r11
14509 CFI_REL_OFFSET rip,0
14510 pushq_cfi %rax
14511 cld
14512 SAVE_ARGS 0,1,0
14513+ pax_enter_kernel_user
14514+
14515+#ifdef CONFIG_PAX_RANDKSTACK
14516+ pax_erase_kstack
14517+#endif
14518+
14519+ /*
14520+ * No need to follow this irqs on/off section: the syscall
14521+ * disabled irqs, here we enable it straight after entry:
14522+ */
14523+ ENABLE_INTERRUPTS(CLBR_NONE)
14524 /* no need to do an access_ok check here because rbp has been
14525 32bit zero extended */
14526+
14527+#ifdef CONFIG_PAX_MEMORY_UDEREF
14528+ addq pax_user_shadow_base,%rbp
14529+ ASM_PAX_OPEN_USERLAND
14530+#endif
14531+
14532 ASM_STAC
14533 1: movl (%rbp),%ebp
14534 _ASM_EXTABLE(1b,ia32_badarg)
14535 ASM_CLAC
14536- orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14537- testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14538+
14539+#ifdef CONFIG_PAX_MEMORY_UDEREF
14540+ ASM_PAX_CLOSE_USERLAND
14541+#endif
14542+
14543+ GET_THREAD_INFO(%r11)
14544+ orl $TS_COMPAT,TI_status(%r11)
14545+ testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11)
14546 CFI_REMEMBER_STATE
14547 jnz sysenter_tracesys
14548 cmpq $(IA32_NR_syscalls-1),%rax
14549@@ -162,15 +209,18 @@ sysenter_do_call:
14550 sysenter_dispatch:
14551 call *ia32_sys_call_table(,%rax,8)
14552 movq %rax,RAX-ARGOFFSET(%rsp)
14553+ GET_THREAD_INFO(%r11)
14554 DISABLE_INTERRUPTS(CLBR_NONE)
14555 TRACE_IRQS_OFF
14556- testl $_TIF_ALLWORK_MASK,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14557+ testl $_TIF_ALLWORK_MASK,TI_flags(%r11)
14558 jnz sysexit_audit
14559 sysexit_from_sys_call:
14560- andl $~TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14561+ pax_exit_kernel_user
14562+ pax_erase_kstack
14563+ andl $~TS_COMPAT,TI_status(%r11)
14564 /* clear IF, that popfq doesn't enable interrupts early */
14565- andl $~0x200,EFLAGS-R11(%rsp)
14566- movl RIP-R11(%rsp),%edx /* User %eip */
14567+ andl $~X86_EFLAGS_IF,EFLAGS(%rsp)
14568+ movl RIP(%rsp),%edx /* User %eip */
14569 CFI_REGISTER rip,rdx
14570 RESTORE_ARGS 0,24,0,0,0,0
14571 xorq %r8,%r8
14572@@ -193,6 +243,9 @@ sysexit_from_sys_call:
14573 movl %eax,%esi /* 2nd arg: syscall number */
14574 movl $AUDIT_ARCH_I386,%edi /* 1st arg: audit arch */
14575 call __audit_syscall_entry
14576+
14577+ pax_erase_kstack
14578+
14579 movl RAX-ARGOFFSET(%rsp),%eax /* reload syscall number */
14580 cmpq $(IA32_NR_syscalls-1),%rax
14581 ja ia32_badsys
14582@@ -204,7 +257,7 @@ sysexit_from_sys_call:
14583 .endm
14584
14585 .macro auditsys_exit exit
14586- testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14587+ testl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11)
14588 jnz ia32_ret_from_sys_call
14589 TRACE_IRQS_ON
14590 ENABLE_INTERRUPTS(CLBR_NONE)
14591@@ -215,11 +268,12 @@ sysexit_from_sys_call:
14592 1: setbe %al /* 1 if error, 0 if not */
14593 movzbl %al,%edi /* zero-extend that into %edi */
14594 call __audit_syscall_exit
14595+ GET_THREAD_INFO(%r11)
14596 movq RAX-ARGOFFSET(%rsp),%rax /* reload syscall return value */
14597 movl $(_TIF_ALLWORK_MASK & ~_TIF_SYSCALL_AUDIT),%edi
14598 DISABLE_INTERRUPTS(CLBR_NONE)
14599 TRACE_IRQS_OFF
14600- testl %edi,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14601+ testl %edi,TI_flags(%r11)
14602 jz \exit
14603 CLEAR_RREGS -ARGOFFSET
14604 jmp int_with_check
14605@@ -237,7 +291,7 @@ sysexit_audit:
14606
14607 sysenter_tracesys:
14608 #ifdef CONFIG_AUDITSYSCALL
14609- testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14610+ testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11)
14611 jz sysenter_auditsys
14612 #endif
14613 SAVE_REST
14614@@ -249,6 +303,9 @@ sysenter_tracesys:
14615 RESTORE_REST
14616 cmpq $(IA32_NR_syscalls-1),%rax
14617 ja int_ret_from_sys_call /* sysenter_tracesys has set RAX(%rsp) */
14618+
14619+ pax_erase_kstack
14620+
14621 jmp sysenter_do_call
14622 CFI_ENDPROC
14623 ENDPROC(ia32_sysenter_target)
14624@@ -276,19 +333,25 @@ ENDPROC(ia32_sysenter_target)
14625 ENTRY(ia32_cstar_target)
14626 CFI_STARTPROC32 simple
14627 CFI_SIGNAL_FRAME
14628- CFI_DEF_CFA rsp,KERNEL_STACK_OFFSET
14629+ CFI_DEF_CFA rsp,0
14630 CFI_REGISTER rip,rcx
14631 /*CFI_REGISTER rflags,r11*/
14632 SWAPGS_UNSAFE_STACK
14633 movl %esp,%r8d
14634 CFI_REGISTER rsp,r8
14635 movq PER_CPU_VAR(kernel_stack),%rsp
14636+ SAVE_ARGS 8*6,0,0
14637+ pax_enter_kernel_user
14638+
14639+#ifdef CONFIG_PAX_RANDKSTACK
14640+ pax_erase_kstack
14641+#endif
14642+
14643 /*
14644 * No need to follow this irqs on/off section: the syscall
14645 * disabled irqs and here we enable it straight after entry:
14646 */
14647 ENABLE_INTERRUPTS(CLBR_NONE)
14648- SAVE_ARGS 8,0,0
14649 movl %eax,%eax /* zero extension */
14650 movq %rax,ORIG_RAX-ARGOFFSET(%rsp)
14651 movq %rcx,RIP-ARGOFFSET(%rsp)
14652@@ -304,12 +367,25 @@ ENTRY(ia32_cstar_target)
14653 /* no need to do an access_ok check here because r8 has been
14654 32bit zero extended */
14655 /* hardware stack frame is complete now */
14656+
14657+#ifdef CONFIG_PAX_MEMORY_UDEREF
14658+ ASM_PAX_OPEN_USERLAND
14659+ movq pax_user_shadow_base,%r8
14660+ addq RSP-ARGOFFSET(%rsp),%r8
14661+#endif
14662+
14663 ASM_STAC
14664 1: movl (%r8),%r9d
14665 _ASM_EXTABLE(1b,ia32_badarg)
14666 ASM_CLAC
14667- orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14668- testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14669+
14670+#ifdef CONFIG_PAX_MEMORY_UDEREF
14671+ ASM_PAX_CLOSE_USERLAND
14672+#endif
14673+
14674+ GET_THREAD_INFO(%r11)
14675+ orl $TS_COMPAT,TI_status(%r11)
14676+ testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11)
14677 CFI_REMEMBER_STATE
14678 jnz cstar_tracesys
14679 cmpq $IA32_NR_syscalls-1,%rax
14680@@ -319,13 +395,16 @@ cstar_do_call:
14681 cstar_dispatch:
14682 call *ia32_sys_call_table(,%rax,8)
14683 movq %rax,RAX-ARGOFFSET(%rsp)
14684+ GET_THREAD_INFO(%r11)
14685 DISABLE_INTERRUPTS(CLBR_NONE)
14686 TRACE_IRQS_OFF
14687- testl $_TIF_ALLWORK_MASK,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14688+ testl $_TIF_ALLWORK_MASK,TI_flags(%r11)
14689 jnz sysretl_audit
14690 sysretl_from_sys_call:
14691- andl $~TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14692- RESTORE_ARGS 0,-ARG_SKIP,0,0,0
14693+ pax_exit_kernel_user
14694+ pax_erase_kstack
14695+ andl $~TS_COMPAT,TI_status(%r11)
14696+ RESTORE_ARGS 0,-ORIG_RAX,0,0,0
14697 movl RIP-ARGOFFSET(%rsp),%ecx
14698 CFI_REGISTER rip,rcx
14699 movl EFLAGS-ARGOFFSET(%rsp),%r11d
14700@@ -352,7 +431,7 @@ sysretl_audit:
14701
14702 cstar_tracesys:
14703 #ifdef CONFIG_AUDITSYSCALL
14704- testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14705+ testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%r11)
14706 jz cstar_auditsys
14707 #endif
14708 xchgl %r9d,%ebp
14709@@ -366,11 +445,19 @@ cstar_tracesys:
14710 xchgl %ebp,%r9d
14711 cmpq $(IA32_NR_syscalls-1),%rax
14712 ja int_ret_from_sys_call /* cstar_tracesys has set RAX(%rsp) */
14713+
14714+ pax_erase_kstack
14715+
14716 jmp cstar_do_call
14717 END(ia32_cstar_target)
14718
14719 ia32_badarg:
14720 ASM_CLAC
14721+
14722+#ifdef CONFIG_PAX_MEMORY_UDEREF
14723+ ASM_PAX_CLOSE_USERLAND
14724+#endif
14725+
14726 movq $-EFAULT,%rax
14727 jmp ia32_sysret
14728 CFI_ENDPROC
14729@@ -407,19 +494,26 @@ ENTRY(ia32_syscall)
14730 CFI_REL_OFFSET rip,RIP-RIP
14731 PARAVIRT_ADJUST_EXCEPTION_FRAME
14732 SWAPGS
14733- /*
14734- * No need to follow this irqs on/off section: the syscall
14735- * disabled irqs and here we enable it straight after entry:
14736- */
14737- ENABLE_INTERRUPTS(CLBR_NONE)
14738 movl %eax,%eax
14739 pushq_cfi %rax
14740 cld
14741 /* note the registers are not zero extended to the sf.
14742 this could be a problem. */
14743 SAVE_ARGS 0,1,0
14744- orl $TS_COMPAT,TI_status+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14745- testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
14746+ pax_enter_kernel_user
14747+
14748+#ifdef CONFIG_PAX_RANDKSTACK
14749+ pax_erase_kstack
14750+#endif
14751+
14752+ /*
14753+ * No need to follow this irqs on/off section: the syscall
14754+ * disabled irqs and here we enable it straight after entry:
14755+ */
14756+ ENABLE_INTERRUPTS(CLBR_NONE)
14757+ GET_THREAD_INFO(%r11)
14758+ orl $TS_COMPAT,TI_status(%r11)
14759+ testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%r11)
14760 jnz ia32_tracesys
14761 cmpq $(IA32_NR_syscalls-1),%rax
14762 ja ia32_badsys
14763@@ -442,6 +536,9 @@ ia32_tracesys:
14764 RESTORE_REST
14765 cmpq $(IA32_NR_syscalls-1),%rax
14766 ja int_ret_from_sys_call /* ia32_tracesys has set RAX(%rsp) */
14767+
14768+ pax_erase_kstack
14769+
14770 jmp ia32_do_call
14771 END(ia32_syscall)
14772
14773diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c
14774index 8e0ceec..af13504 100644
14775--- a/arch/x86/ia32/sys_ia32.c
14776+++ b/arch/x86/ia32/sys_ia32.c
14777@@ -69,8 +69,8 @@ asmlinkage long sys32_ftruncate64(unsigned int fd, unsigned long offset_low,
14778 */
14779 static int cp_stat64(struct stat64 __user *ubuf, struct kstat *stat)
14780 {
14781- typeof(ubuf->st_uid) uid = 0;
14782- typeof(ubuf->st_gid) gid = 0;
14783+ typeof(((struct stat64 *)0)->st_uid) uid = 0;
14784+ typeof(((struct stat64 *)0)->st_gid) gid = 0;
14785 SET_UID(uid, from_kuid_munged(current_user_ns(), stat->uid));
14786 SET_GID(gid, from_kgid_munged(current_user_ns(), stat->gid));
14787 if (!access_ok(VERIFY_WRITE, ubuf, sizeof(struct stat64)) ||
14788diff --git a/arch/x86/include/asm/alternative-asm.h b/arch/x86/include/asm/alternative-asm.h
14789index 372231c..51b537d 100644
14790--- a/arch/x86/include/asm/alternative-asm.h
14791+++ b/arch/x86/include/asm/alternative-asm.h
14792@@ -18,6 +18,45 @@
14793 .endm
14794 #endif
14795
14796+#ifdef KERNEXEC_PLUGIN
14797+ .macro pax_force_retaddr_bts rip=0
14798+ btsq $63,\rip(%rsp)
14799+ .endm
14800+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_BTS
14801+ .macro pax_force_retaddr rip=0, reload=0
14802+ btsq $63,\rip(%rsp)
14803+ .endm
14804+ .macro pax_force_fptr ptr
14805+ btsq $63,\ptr
14806+ .endm
14807+ .macro pax_set_fptr_mask
14808+ .endm
14809+#endif
14810+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
14811+ .macro pax_force_retaddr rip=0, reload=0
14812+ .if \reload
14813+ pax_set_fptr_mask
14814+ .endif
14815+ orq %r12,\rip(%rsp)
14816+ .endm
14817+ .macro pax_force_fptr ptr
14818+ orq %r12,\ptr
14819+ .endm
14820+ .macro pax_set_fptr_mask
14821+ movabs $0x8000000000000000,%r12
14822+ .endm
14823+#endif
14824+#else
14825+ .macro pax_force_retaddr rip=0, reload=0
14826+ .endm
14827+ .macro pax_force_fptr ptr
14828+ .endm
14829+ .macro pax_force_retaddr_bts rip=0
14830+ .endm
14831+ .macro pax_set_fptr_mask
14832+ .endm
14833+#endif
14834+
14835 .macro altinstruction_entry orig alt feature orig_len alt_len
14836 .long \orig - .
14837 .long \alt - .
14838diff --git a/arch/x86/include/asm/alternative.h b/arch/x86/include/asm/alternative.h
14839index 0a3f9c9..c9d081d 100644
14840--- a/arch/x86/include/asm/alternative.h
14841+++ b/arch/x86/include/asm/alternative.h
14842@@ -106,7 +106,7 @@ static inline int alternatives_text_reserved(void *start, void *end)
14843 ".pushsection .discard,\"aw\",@progbits\n" \
14844 DISCARD_ENTRY(1) \
14845 ".popsection\n" \
14846- ".pushsection .altinstr_replacement, \"ax\"\n" \
14847+ ".pushsection .altinstr_replacement, \"a\"\n" \
14848 ALTINSTR_REPLACEMENT(newinstr, feature, 1) \
14849 ".popsection"
14850
14851@@ -120,7 +120,7 @@ static inline int alternatives_text_reserved(void *start, void *end)
14852 DISCARD_ENTRY(1) \
14853 DISCARD_ENTRY(2) \
14854 ".popsection\n" \
14855- ".pushsection .altinstr_replacement, \"ax\"\n" \
14856+ ".pushsection .altinstr_replacement, \"a\"\n" \
14857 ALTINSTR_REPLACEMENT(newinstr1, feature1, 1) \
14858 ALTINSTR_REPLACEMENT(newinstr2, feature2, 2) \
14859 ".popsection"
14860diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
14861index 19b0eba..12254cd 100644
14862--- a/arch/x86/include/asm/apic.h
14863+++ b/arch/x86/include/asm/apic.h
14864@@ -45,7 +45,7 @@ static inline void generic_apic_probe(void)
14865
14866 #ifdef CONFIG_X86_LOCAL_APIC
14867
14868-extern unsigned int apic_verbosity;
14869+extern int apic_verbosity;
14870 extern int local_apic_timer_c2_ok;
14871
14872 extern int disable_apic;
14873diff --git a/arch/x86/include/asm/apm.h b/arch/x86/include/asm/apm.h
14874index 20370c6..a2eb9b0 100644
14875--- a/arch/x86/include/asm/apm.h
14876+++ b/arch/x86/include/asm/apm.h
14877@@ -34,7 +34,7 @@ static inline void apm_bios_call_asm(u32 func, u32 ebx_in, u32 ecx_in,
14878 __asm__ __volatile__(APM_DO_ZERO_SEGS
14879 "pushl %%edi\n\t"
14880 "pushl %%ebp\n\t"
14881- "lcall *%%cs:apm_bios_entry\n\t"
14882+ "lcall *%%ss:apm_bios_entry\n\t"
14883 "setc %%al\n\t"
14884 "popl %%ebp\n\t"
14885 "popl %%edi\n\t"
14886@@ -58,7 +58,7 @@ static inline u8 apm_bios_call_simple_asm(u32 func, u32 ebx_in,
14887 __asm__ __volatile__(APM_DO_ZERO_SEGS
14888 "pushl %%edi\n\t"
14889 "pushl %%ebp\n\t"
14890- "lcall *%%cs:apm_bios_entry\n\t"
14891+ "lcall *%%ss:apm_bios_entry\n\t"
14892 "setc %%bl\n\t"
14893 "popl %%ebp\n\t"
14894 "popl %%edi\n\t"
14895diff --git a/arch/x86/include/asm/atomic.h b/arch/x86/include/asm/atomic.h
14896index b17f4f4..9620151 100644
14897--- a/arch/x86/include/asm/atomic.h
14898+++ b/arch/x86/include/asm/atomic.h
14899@@ -23,7 +23,18 @@
14900 */
14901 static inline int atomic_read(const atomic_t *v)
14902 {
14903- return (*(volatile int *)&(v)->counter);
14904+ return (*(volatile const int *)&(v)->counter);
14905+}
14906+
14907+/**
14908+ * atomic_read_unchecked - read atomic variable
14909+ * @v: pointer of type atomic_unchecked_t
14910+ *
14911+ * Atomically reads the value of @v.
14912+ */
14913+static inline int __intentional_overflow(-1) atomic_read_unchecked(const atomic_unchecked_t *v)
14914+{
14915+ return (*(volatile const int *)&(v)->counter);
14916 }
14917
14918 /**
14919@@ -39,6 +50,18 @@ static inline void atomic_set(atomic_t *v, int i)
14920 }
14921
14922 /**
14923+ * atomic_set_unchecked - set atomic variable
14924+ * @v: pointer of type atomic_unchecked_t
14925+ * @i: required value
14926+ *
14927+ * Atomically sets the value of @v to @i.
14928+ */
14929+static inline void atomic_set_unchecked(atomic_unchecked_t *v, int i)
14930+{
14931+ v->counter = i;
14932+}
14933+
14934+/**
14935 * atomic_add - add integer to atomic variable
14936 * @i: integer value to add
14937 * @v: pointer of type atomic_t
14938@@ -47,7 +70,29 @@ static inline void atomic_set(atomic_t *v, int i)
14939 */
14940 static inline void atomic_add(int i, atomic_t *v)
14941 {
14942- asm volatile(LOCK_PREFIX "addl %1,%0"
14943+ asm volatile(LOCK_PREFIX "addl %1,%0\n"
14944+
14945+#ifdef CONFIG_PAX_REFCOUNT
14946+ "jno 0f\n"
14947+ LOCK_PREFIX "subl %1,%0\n"
14948+ "int $4\n0:\n"
14949+ _ASM_EXTABLE(0b, 0b)
14950+#endif
14951+
14952+ : "+m" (v->counter)
14953+ : "ir" (i));
14954+}
14955+
14956+/**
14957+ * atomic_add_unchecked - add integer to atomic variable
14958+ * @i: integer value to add
14959+ * @v: pointer of type atomic_unchecked_t
14960+ *
14961+ * Atomically adds @i to @v.
14962+ */
14963+static inline void atomic_add_unchecked(int i, atomic_unchecked_t *v)
14964+{
14965+ asm volatile(LOCK_PREFIX "addl %1,%0\n"
14966 : "+m" (v->counter)
14967 : "ir" (i));
14968 }
14969@@ -61,7 +106,29 @@ static inline void atomic_add(int i, atomic_t *v)
14970 */
14971 static inline void atomic_sub(int i, atomic_t *v)
14972 {
14973- asm volatile(LOCK_PREFIX "subl %1,%0"
14974+ asm volatile(LOCK_PREFIX "subl %1,%0\n"
14975+
14976+#ifdef CONFIG_PAX_REFCOUNT
14977+ "jno 0f\n"
14978+ LOCK_PREFIX "addl %1,%0\n"
14979+ "int $4\n0:\n"
14980+ _ASM_EXTABLE(0b, 0b)
14981+#endif
14982+
14983+ : "+m" (v->counter)
14984+ : "ir" (i));
14985+}
14986+
14987+/**
14988+ * atomic_sub_unchecked - subtract integer from atomic variable
14989+ * @i: integer value to subtract
14990+ * @v: pointer of type atomic_unchecked_t
14991+ *
14992+ * Atomically subtracts @i from @v.
14993+ */
14994+static inline void atomic_sub_unchecked(int i, atomic_unchecked_t *v)
14995+{
14996+ asm volatile(LOCK_PREFIX "subl %1,%0\n"
14997 : "+m" (v->counter)
14998 : "ir" (i));
14999 }
15000@@ -77,7 +144,7 @@ static inline void atomic_sub(int i, atomic_t *v)
15001 */
15002 static inline int atomic_sub_and_test(int i, atomic_t *v)
15003 {
15004- GEN_BINARY_RMWcc(LOCK_PREFIX "subl", v->counter, "er", i, "%0", "e");
15005+ GEN_BINARY_RMWcc(LOCK_PREFIX "subl", LOCK_PREFIX "addl", v->counter, "er", i, "%0", "e");
15006 }
15007
15008 /**
15009@@ -88,7 +155,27 @@ static inline int atomic_sub_and_test(int i, atomic_t *v)
15010 */
15011 static inline void atomic_inc(atomic_t *v)
15012 {
15013- asm volatile(LOCK_PREFIX "incl %0"
15014+ asm volatile(LOCK_PREFIX "incl %0\n"
15015+
15016+#ifdef CONFIG_PAX_REFCOUNT
15017+ "jno 0f\n"
15018+ LOCK_PREFIX "decl %0\n"
15019+ "int $4\n0:\n"
15020+ _ASM_EXTABLE(0b, 0b)
15021+#endif
15022+
15023+ : "+m" (v->counter));
15024+}
15025+
15026+/**
15027+ * atomic_inc_unchecked - increment atomic variable
15028+ * @v: pointer of type atomic_unchecked_t
15029+ *
15030+ * Atomically increments @v by 1.
15031+ */
15032+static inline void atomic_inc_unchecked(atomic_unchecked_t *v)
15033+{
15034+ asm volatile(LOCK_PREFIX "incl %0\n"
15035 : "+m" (v->counter));
15036 }
15037
15038@@ -100,7 +187,27 @@ static inline void atomic_inc(atomic_t *v)
15039 */
15040 static inline void atomic_dec(atomic_t *v)
15041 {
15042- asm volatile(LOCK_PREFIX "decl %0"
15043+ asm volatile(LOCK_PREFIX "decl %0\n"
15044+
15045+#ifdef CONFIG_PAX_REFCOUNT
15046+ "jno 0f\n"
15047+ LOCK_PREFIX "incl %0\n"
15048+ "int $4\n0:\n"
15049+ _ASM_EXTABLE(0b, 0b)
15050+#endif
15051+
15052+ : "+m" (v->counter));
15053+}
15054+
15055+/**
15056+ * atomic_dec_unchecked - decrement atomic variable
15057+ * @v: pointer of type atomic_unchecked_t
15058+ *
15059+ * Atomically decrements @v by 1.
15060+ */
15061+static inline void atomic_dec_unchecked(atomic_unchecked_t *v)
15062+{
15063+ asm volatile(LOCK_PREFIX "decl %0\n"
15064 : "+m" (v->counter));
15065 }
15066
15067@@ -114,7 +221,7 @@ static inline void atomic_dec(atomic_t *v)
15068 */
15069 static inline int atomic_dec_and_test(atomic_t *v)
15070 {
15071- GEN_UNARY_RMWcc(LOCK_PREFIX "decl", v->counter, "%0", "e");
15072+ GEN_UNARY_RMWcc(LOCK_PREFIX "decl", LOCK_PREFIX "incl", v->counter, "%0", "e");
15073 }
15074
15075 /**
15076@@ -127,7 +234,20 @@ static inline int atomic_dec_and_test(atomic_t *v)
15077 */
15078 static inline int atomic_inc_and_test(atomic_t *v)
15079 {
15080- GEN_UNARY_RMWcc(LOCK_PREFIX "incl", v->counter, "%0", "e");
15081+ GEN_UNARY_RMWcc(LOCK_PREFIX "incl", LOCK_PREFIX "decl", v->counter, "%0", "e");
15082+}
15083+
15084+/**
15085+ * atomic_inc_and_test_unchecked - increment and test
15086+ * @v: pointer of type atomic_unchecked_t
15087+ *
15088+ * Atomically increments @v by 1
15089+ * and returns true if the result is zero, or false for all
15090+ * other cases.
15091+ */
15092+static inline int atomic_inc_and_test_unchecked(atomic_unchecked_t *v)
15093+{
15094+ GEN_UNARY_RMWcc_unchecked(LOCK_PREFIX "incl", v->counter, "%0", "e");
15095 }
15096
15097 /**
15098@@ -141,7 +261,7 @@ static inline int atomic_inc_and_test(atomic_t *v)
15099 */
15100 static inline int atomic_add_negative(int i, atomic_t *v)
15101 {
15102- GEN_BINARY_RMWcc(LOCK_PREFIX "addl", v->counter, "er", i, "%0", "s");
15103+ GEN_BINARY_RMWcc(LOCK_PREFIX "addl", LOCK_PREFIX "subl", v->counter, "er", i, "%0", "s");
15104 }
15105
15106 /**
15107@@ -153,6 +273,18 @@ static inline int atomic_add_negative(int i, atomic_t *v)
15108 */
15109 static inline int atomic_add_return(int i, atomic_t *v)
15110 {
15111+ return i + xadd_check_overflow(&v->counter, i);
15112+}
15113+
15114+/**
15115+ * atomic_add_return_unchecked - add integer and return
15116+ * @i: integer value to add
15117+ * @v: pointer of type atomic_unchecked_t
15118+ *
15119+ * Atomically adds @i to @v and returns @i + @v
15120+ */
15121+static inline int atomic_add_return_unchecked(int i, atomic_unchecked_t *v)
15122+{
15123 return i + xadd(&v->counter, i);
15124 }
15125
15126@@ -169,9 +301,18 @@ static inline int atomic_sub_return(int i, atomic_t *v)
15127 }
15128
15129 #define atomic_inc_return(v) (atomic_add_return(1, v))
15130+static inline int atomic_inc_return_unchecked(atomic_unchecked_t *v)
15131+{
15132+ return atomic_add_return_unchecked(1, v);
15133+}
15134 #define atomic_dec_return(v) (atomic_sub_return(1, v))
15135
15136-static inline int atomic_cmpxchg(atomic_t *v, int old, int new)
15137+static inline int __intentional_overflow(-1) atomic_cmpxchg(atomic_t *v, int old, int new)
15138+{
15139+ return cmpxchg(&v->counter, old, new);
15140+}
15141+
15142+static inline int atomic_cmpxchg_unchecked(atomic_unchecked_t *v, int old, int new)
15143 {
15144 return cmpxchg(&v->counter, old, new);
15145 }
15146@@ -181,6 +322,11 @@ static inline int atomic_xchg(atomic_t *v, int new)
15147 return xchg(&v->counter, new);
15148 }
15149
15150+static inline int atomic_xchg_unchecked(atomic_unchecked_t *v, int new)
15151+{
15152+ return xchg(&v->counter, new);
15153+}
15154+
15155 /**
15156 * __atomic_add_unless - add unless the number is already a given value
15157 * @v: pointer of type atomic_t
15158@@ -190,14 +336,27 @@ static inline int atomic_xchg(atomic_t *v, int new)
15159 * Atomically adds @a to @v, so long as @v was not already @u.
15160 * Returns the old value of @v.
15161 */
15162-static inline int __atomic_add_unless(atomic_t *v, int a, int u)
15163+static inline int __intentional_overflow(-1) __atomic_add_unless(atomic_t *v, int a, int u)
15164 {
15165- int c, old;
15166+ int c, old, new;
15167 c = atomic_read(v);
15168 for (;;) {
15169- if (unlikely(c == (u)))
15170+ if (unlikely(c == u))
15171 break;
15172- old = atomic_cmpxchg((v), c, c + (a));
15173+
15174+ asm volatile("addl %2,%0\n"
15175+
15176+#ifdef CONFIG_PAX_REFCOUNT
15177+ "jno 0f\n"
15178+ "subl %2,%0\n"
15179+ "int $4\n0:\n"
15180+ _ASM_EXTABLE(0b, 0b)
15181+#endif
15182+
15183+ : "=r" (new)
15184+ : "0" (c), "ir" (a));
15185+
15186+ old = atomic_cmpxchg(v, c, new);
15187 if (likely(old == c))
15188 break;
15189 c = old;
15190@@ -206,6 +365,49 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
15191 }
15192
15193 /**
15194+ * atomic_inc_not_zero_hint - increment if not null
15195+ * @v: pointer of type atomic_t
15196+ * @hint: probable value of the atomic before the increment
15197+ *
15198+ * This version of atomic_inc_not_zero() gives a hint of probable
15199+ * value of the atomic. This helps processor to not read the memory
15200+ * before doing the atomic read/modify/write cycle, lowering
15201+ * number of bus transactions on some arches.
15202+ *
15203+ * Returns: 0 if increment was not done, 1 otherwise.
15204+ */
15205+#define atomic_inc_not_zero_hint atomic_inc_not_zero_hint
15206+static inline int atomic_inc_not_zero_hint(atomic_t *v, int hint)
15207+{
15208+ int val, c = hint, new;
15209+
15210+ /* sanity test, should be removed by compiler if hint is a constant */
15211+ if (!hint)
15212+ return __atomic_add_unless(v, 1, 0);
15213+
15214+ do {
15215+ asm volatile("incl %0\n"
15216+
15217+#ifdef CONFIG_PAX_REFCOUNT
15218+ "jno 0f\n"
15219+ "decl %0\n"
15220+ "int $4\n0:\n"
15221+ _ASM_EXTABLE(0b, 0b)
15222+#endif
15223+
15224+ : "=r" (new)
15225+ : "0" (c));
15226+
15227+ val = atomic_cmpxchg(v, c, new);
15228+ if (val == c)
15229+ return 1;
15230+ c = val;
15231+ } while (c);
15232+
15233+ return 0;
15234+}
15235+
15236+/**
15237 * atomic_inc_short - increment of a short integer
15238 * @v: pointer to type int
15239 *
15240@@ -234,14 +436,37 @@ static inline void atomic_or_long(unsigned long *v1, unsigned long v2)
15241 #endif
15242
15243 /* These are x86-specific, used by some header files */
15244-#define atomic_clear_mask(mask, addr) \
15245- asm volatile(LOCK_PREFIX "andl %0,%1" \
15246- : : "r" (~(mask)), "m" (*(addr)) : "memory")
15247+static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
15248+{
15249+ asm volatile(LOCK_PREFIX "andl %1,%0"
15250+ : "+m" (v->counter)
15251+ : "r" (~(mask))
15252+ : "memory");
15253+}
15254
15255-#define atomic_set_mask(mask, addr) \
15256- asm volatile(LOCK_PREFIX "orl %0,%1" \
15257- : : "r" ((unsigned)(mask)), "m" (*(addr)) \
15258- : "memory")
15259+static inline void atomic_clear_mask_unchecked(unsigned int mask, atomic_unchecked_t *v)
15260+{
15261+ asm volatile(LOCK_PREFIX "andl %1,%0"
15262+ : "+m" (v->counter)
15263+ : "r" (~(mask))
15264+ : "memory");
15265+}
15266+
15267+static inline void atomic_set_mask(unsigned int mask, atomic_t *v)
15268+{
15269+ asm volatile(LOCK_PREFIX "orl %1,%0"
15270+ : "+m" (v->counter)
15271+ : "r" (mask)
15272+ : "memory");
15273+}
15274+
15275+static inline void atomic_set_mask_unchecked(unsigned int mask, atomic_unchecked_t *v)
15276+{
15277+ asm volatile(LOCK_PREFIX "orl %1,%0"
15278+ : "+m" (v->counter)
15279+ : "r" (mask)
15280+ : "memory");
15281+}
15282
15283 /* Atomic operations are already serializing on x86 */
15284 #define smp_mb__before_atomic_dec() barrier()
15285diff --git a/arch/x86/include/asm/atomic64_32.h b/arch/x86/include/asm/atomic64_32.h
15286index b154de7..bf18a5a 100644
15287--- a/arch/x86/include/asm/atomic64_32.h
15288+++ b/arch/x86/include/asm/atomic64_32.h
15289@@ -12,6 +12,14 @@ typedef struct {
15290 u64 __aligned(8) counter;
15291 } atomic64_t;
15292
15293+#ifdef CONFIG_PAX_REFCOUNT
15294+typedef struct {
15295+ u64 __aligned(8) counter;
15296+} atomic64_unchecked_t;
15297+#else
15298+typedef atomic64_t atomic64_unchecked_t;
15299+#endif
15300+
15301 #define ATOMIC64_INIT(val) { (val) }
15302
15303 #define __ATOMIC64_DECL(sym) void atomic64_##sym(atomic64_t *, ...)
15304@@ -37,21 +45,31 @@ typedef struct {
15305 ATOMIC64_DECL_ONE(sym##_386)
15306
15307 ATOMIC64_DECL_ONE(add_386);
15308+ATOMIC64_DECL_ONE(add_unchecked_386);
15309 ATOMIC64_DECL_ONE(sub_386);
15310+ATOMIC64_DECL_ONE(sub_unchecked_386);
15311 ATOMIC64_DECL_ONE(inc_386);
15312+ATOMIC64_DECL_ONE(inc_unchecked_386);
15313 ATOMIC64_DECL_ONE(dec_386);
15314+ATOMIC64_DECL_ONE(dec_unchecked_386);
15315 #endif
15316
15317 #define alternative_atomic64(f, out, in...) \
15318 __alternative_atomic64(f, f, ASM_OUTPUT2(out), ## in)
15319
15320 ATOMIC64_DECL(read);
15321+ATOMIC64_DECL(read_unchecked);
15322 ATOMIC64_DECL(set);
15323+ATOMIC64_DECL(set_unchecked);
15324 ATOMIC64_DECL(xchg);
15325 ATOMIC64_DECL(add_return);
15326+ATOMIC64_DECL(add_return_unchecked);
15327 ATOMIC64_DECL(sub_return);
15328+ATOMIC64_DECL(sub_return_unchecked);
15329 ATOMIC64_DECL(inc_return);
15330+ATOMIC64_DECL(inc_return_unchecked);
15331 ATOMIC64_DECL(dec_return);
15332+ATOMIC64_DECL(dec_return_unchecked);
15333 ATOMIC64_DECL(dec_if_positive);
15334 ATOMIC64_DECL(inc_not_zero);
15335 ATOMIC64_DECL(add_unless);
15336@@ -77,6 +95,21 @@ static inline long long atomic64_cmpxchg(atomic64_t *v, long long o, long long n
15337 }
15338
15339 /**
15340+ * atomic64_cmpxchg_unchecked - cmpxchg atomic64 variable
15341+ * @p: pointer to type atomic64_unchecked_t
15342+ * @o: expected value
15343+ * @n: new value
15344+ *
15345+ * Atomically sets @v to @n if it was equal to @o and returns
15346+ * the old value.
15347+ */
15348+
15349+static inline long long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long long o, long long n)
15350+{
15351+ return cmpxchg64(&v->counter, o, n);
15352+}
15353+
15354+/**
15355 * atomic64_xchg - xchg atomic64 variable
15356 * @v: pointer to type atomic64_t
15357 * @n: value to assign
15358@@ -112,6 +145,22 @@ static inline void atomic64_set(atomic64_t *v, long long i)
15359 }
15360
15361 /**
15362+ * atomic64_set_unchecked - set atomic64 variable
15363+ * @v: pointer to type atomic64_unchecked_t
15364+ * @n: value to assign
15365+ *
15366+ * Atomically sets the value of @v to @n.
15367+ */
15368+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long long i)
15369+{
15370+ unsigned high = (unsigned)(i >> 32);
15371+ unsigned low = (unsigned)i;
15372+ alternative_atomic64(set, /* no output */,
15373+ "S" (v), "b" (low), "c" (high)
15374+ : "eax", "edx", "memory");
15375+}
15376+
15377+/**
15378 * atomic64_read - read atomic64 variable
15379 * @v: pointer to type atomic64_t
15380 *
15381@@ -125,6 +174,19 @@ static inline long long atomic64_read(const atomic64_t *v)
15382 }
15383
15384 /**
15385+ * atomic64_read_unchecked - read atomic64 variable
15386+ * @v: pointer to type atomic64_unchecked_t
15387+ *
15388+ * Atomically reads the value of @v and returns it.
15389+ */
15390+static inline long long __intentional_overflow(-1) atomic64_read_unchecked(atomic64_unchecked_t *v)
15391+{
15392+ long long r;
15393+ alternative_atomic64(read, "=&A" (r), "c" (v) : "memory");
15394+ return r;
15395+ }
15396+
15397+/**
15398 * atomic64_add_return - add and return
15399 * @i: integer value to add
15400 * @v: pointer to type atomic64_t
15401@@ -139,6 +201,21 @@ static inline long long atomic64_add_return(long long i, atomic64_t *v)
15402 return i;
15403 }
15404
15405+/**
15406+ * atomic64_add_return_unchecked - add and return
15407+ * @i: integer value to add
15408+ * @v: pointer to type atomic64_unchecked_t
15409+ *
15410+ * Atomically adds @i to @v and returns @i + *@v
15411+ */
15412+static inline long long atomic64_add_return_unchecked(long long i, atomic64_unchecked_t *v)
15413+{
15414+ alternative_atomic64(add_return_unchecked,
15415+ ASM_OUTPUT2("+A" (i), "+c" (v)),
15416+ ASM_NO_INPUT_CLOBBER("memory"));
15417+ return i;
15418+}
15419+
15420 /*
15421 * Other variants with different arithmetic operators:
15422 */
15423@@ -158,6 +235,14 @@ static inline long long atomic64_inc_return(atomic64_t *v)
15424 return a;
15425 }
15426
15427+static inline long long atomic64_inc_return_unchecked(atomic64_unchecked_t *v)
15428+{
15429+ long long a;
15430+ alternative_atomic64(inc_return_unchecked, "=&A" (a),
15431+ "S" (v) : "memory", "ecx");
15432+ return a;
15433+}
15434+
15435 static inline long long atomic64_dec_return(atomic64_t *v)
15436 {
15437 long long a;
15438@@ -182,6 +267,21 @@ static inline long long atomic64_add(long long i, atomic64_t *v)
15439 }
15440
15441 /**
15442+ * atomic64_add_unchecked - add integer to atomic64 variable
15443+ * @i: integer value to add
15444+ * @v: pointer to type atomic64_unchecked_t
15445+ *
15446+ * Atomically adds @i to @v.
15447+ */
15448+static inline long long atomic64_add_unchecked(long long i, atomic64_unchecked_t *v)
15449+{
15450+ __alternative_atomic64(add_unchecked, add_return_unchecked,
15451+ ASM_OUTPUT2("+A" (i), "+c" (v)),
15452+ ASM_NO_INPUT_CLOBBER("memory"));
15453+ return i;
15454+}
15455+
15456+/**
15457 * atomic64_sub - subtract the atomic64 variable
15458 * @i: integer value to subtract
15459 * @v: pointer to type atomic64_t
15460diff --git a/arch/x86/include/asm/atomic64_64.h b/arch/x86/include/asm/atomic64_64.h
15461index 46e9052..ae45136 100644
15462--- a/arch/x86/include/asm/atomic64_64.h
15463+++ b/arch/x86/include/asm/atomic64_64.h
15464@@ -18,7 +18,19 @@
15465 */
15466 static inline long atomic64_read(const atomic64_t *v)
15467 {
15468- return (*(volatile long *)&(v)->counter);
15469+ return (*(volatile const long *)&(v)->counter);
15470+}
15471+
15472+/**
15473+ * atomic64_read_unchecked - read atomic64 variable
15474+ * @v: pointer of type atomic64_unchecked_t
15475+ *
15476+ * Atomically reads the value of @v.
15477+ * Doesn't imply a read memory barrier.
15478+ */
15479+static inline long __intentional_overflow(-1) atomic64_read_unchecked(const atomic64_unchecked_t *v)
15480+{
15481+ return (*(volatile const long *)&(v)->counter);
15482 }
15483
15484 /**
15485@@ -34,6 +46,18 @@ static inline void atomic64_set(atomic64_t *v, long i)
15486 }
15487
15488 /**
15489+ * atomic64_set_unchecked - set atomic64 variable
15490+ * @v: pointer to type atomic64_unchecked_t
15491+ * @i: required value
15492+ *
15493+ * Atomically sets the value of @v to @i.
15494+ */
15495+static inline void atomic64_set_unchecked(atomic64_unchecked_t *v, long i)
15496+{
15497+ v->counter = i;
15498+}
15499+
15500+/**
15501 * atomic64_add - add integer to atomic64 variable
15502 * @i: integer value to add
15503 * @v: pointer to type atomic64_t
15504@@ -42,6 +66,28 @@ static inline void atomic64_set(atomic64_t *v, long i)
15505 */
15506 static inline void atomic64_add(long i, atomic64_t *v)
15507 {
15508+ asm volatile(LOCK_PREFIX "addq %1,%0\n"
15509+
15510+#ifdef CONFIG_PAX_REFCOUNT
15511+ "jno 0f\n"
15512+ LOCK_PREFIX "subq %1,%0\n"
15513+ "int $4\n0:\n"
15514+ _ASM_EXTABLE(0b, 0b)
15515+#endif
15516+
15517+ : "=m" (v->counter)
15518+ : "er" (i), "m" (v->counter));
15519+}
15520+
15521+/**
15522+ * atomic64_add_unchecked - add integer to atomic64 variable
15523+ * @i: integer value to add
15524+ * @v: pointer to type atomic64_unchecked_t
15525+ *
15526+ * Atomically adds @i to @v.
15527+ */
15528+static inline void atomic64_add_unchecked(long i, atomic64_unchecked_t *v)
15529+{
15530 asm volatile(LOCK_PREFIX "addq %1,%0"
15531 : "=m" (v->counter)
15532 : "er" (i), "m" (v->counter));
15533@@ -56,7 +102,29 @@ static inline void atomic64_add(long i, atomic64_t *v)
15534 */
15535 static inline void atomic64_sub(long i, atomic64_t *v)
15536 {
15537- asm volatile(LOCK_PREFIX "subq %1,%0"
15538+ asm volatile(LOCK_PREFIX "subq %1,%0\n"
15539+
15540+#ifdef CONFIG_PAX_REFCOUNT
15541+ "jno 0f\n"
15542+ LOCK_PREFIX "addq %1,%0\n"
15543+ "int $4\n0:\n"
15544+ _ASM_EXTABLE(0b, 0b)
15545+#endif
15546+
15547+ : "=m" (v->counter)
15548+ : "er" (i), "m" (v->counter));
15549+}
15550+
15551+/**
15552+ * atomic64_sub_unchecked - subtract the atomic64 variable
15553+ * @i: integer value to subtract
15554+ * @v: pointer to type atomic64_unchecked_t
15555+ *
15556+ * Atomically subtracts @i from @v.
15557+ */
15558+static inline void atomic64_sub_unchecked(long i, atomic64_unchecked_t *v)
15559+{
15560+ asm volatile(LOCK_PREFIX "subq %1,%0\n"
15561 : "=m" (v->counter)
15562 : "er" (i), "m" (v->counter));
15563 }
15564@@ -72,7 +140,7 @@ static inline void atomic64_sub(long i, atomic64_t *v)
15565 */
15566 static inline int atomic64_sub_and_test(long i, atomic64_t *v)
15567 {
15568- GEN_BINARY_RMWcc(LOCK_PREFIX "subq", v->counter, "er", i, "%0", "e");
15569+ GEN_BINARY_RMWcc(LOCK_PREFIX "subq", LOCK_PREFIX "addq", v->counter, "er", i, "%0", "e");
15570 }
15571
15572 /**
15573@@ -83,6 +151,27 @@ static inline int atomic64_sub_and_test(long i, atomic64_t *v)
15574 */
15575 static inline void atomic64_inc(atomic64_t *v)
15576 {
15577+ asm volatile(LOCK_PREFIX "incq %0\n"
15578+
15579+#ifdef CONFIG_PAX_REFCOUNT
15580+ "jno 0f\n"
15581+ LOCK_PREFIX "decq %0\n"
15582+ "int $4\n0:\n"
15583+ _ASM_EXTABLE(0b, 0b)
15584+#endif
15585+
15586+ : "=m" (v->counter)
15587+ : "m" (v->counter));
15588+}
15589+
15590+/**
15591+ * atomic64_inc_unchecked - increment atomic64 variable
15592+ * @v: pointer to type atomic64_unchecked_t
15593+ *
15594+ * Atomically increments @v by 1.
15595+ */
15596+static inline void atomic64_inc_unchecked(atomic64_unchecked_t *v)
15597+{
15598 asm volatile(LOCK_PREFIX "incq %0"
15599 : "=m" (v->counter)
15600 : "m" (v->counter));
15601@@ -96,7 +185,28 @@ static inline void atomic64_inc(atomic64_t *v)
15602 */
15603 static inline void atomic64_dec(atomic64_t *v)
15604 {
15605- asm volatile(LOCK_PREFIX "decq %0"
15606+ asm volatile(LOCK_PREFIX "decq %0\n"
15607+
15608+#ifdef CONFIG_PAX_REFCOUNT
15609+ "jno 0f\n"
15610+ LOCK_PREFIX "incq %0\n"
15611+ "int $4\n0:\n"
15612+ _ASM_EXTABLE(0b, 0b)
15613+#endif
15614+
15615+ : "=m" (v->counter)
15616+ : "m" (v->counter));
15617+}
15618+
15619+/**
15620+ * atomic64_dec_unchecked - decrement atomic64 variable
15621+ * @v: pointer to type atomic64_t
15622+ *
15623+ * Atomically decrements @v by 1.
15624+ */
15625+static inline void atomic64_dec_unchecked(atomic64_unchecked_t *v)
15626+{
15627+ asm volatile(LOCK_PREFIX "decq %0\n"
15628 : "=m" (v->counter)
15629 : "m" (v->counter));
15630 }
15631@@ -111,7 +221,7 @@ static inline void atomic64_dec(atomic64_t *v)
15632 */
15633 static inline int atomic64_dec_and_test(atomic64_t *v)
15634 {
15635- GEN_UNARY_RMWcc(LOCK_PREFIX "decq", v->counter, "%0", "e");
15636+ GEN_UNARY_RMWcc(LOCK_PREFIX "decq", LOCK_PREFIX "incq", v->counter, "%0", "e");
15637 }
15638
15639 /**
15640@@ -124,7 +234,7 @@ static inline int atomic64_dec_and_test(atomic64_t *v)
15641 */
15642 static inline int atomic64_inc_and_test(atomic64_t *v)
15643 {
15644- GEN_UNARY_RMWcc(LOCK_PREFIX "incq", v->counter, "%0", "e");
15645+ GEN_UNARY_RMWcc(LOCK_PREFIX "incq", LOCK_PREFIX "decq", v->counter, "%0", "e");
15646 }
15647
15648 /**
15649@@ -138,7 +248,7 @@ static inline int atomic64_inc_and_test(atomic64_t *v)
15650 */
15651 static inline int atomic64_add_negative(long i, atomic64_t *v)
15652 {
15653- GEN_BINARY_RMWcc(LOCK_PREFIX "addq", v->counter, "er", i, "%0", "s");
15654+ GEN_BINARY_RMWcc(LOCK_PREFIX "addq", LOCK_PREFIX "subq", v->counter, "er", i, "%0", "s");
15655 }
15656
15657 /**
15658@@ -150,6 +260,18 @@ static inline int atomic64_add_negative(long i, atomic64_t *v)
15659 */
15660 static inline long atomic64_add_return(long i, atomic64_t *v)
15661 {
15662+ return i + xadd_check_overflow(&v->counter, i);
15663+}
15664+
15665+/**
15666+ * atomic64_add_return_unchecked - add and return
15667+ * @i: integer value to add
15668+ * @v: pointer to type atomic64_unchecked_t
15669+ *
15670+ * Atomically adds @i to @v and returns @i + @v
15671+ */
15672+static inline long atomic64_add_return_unchecked(long i, atomic64_unchecked_t *v)
15673+{
15674 return i + xadd(&v->counter, i);
15675 }
15676
15677@@ -159,6 +281,10 @@ static inline long atomic64_sub_return(long i, atomic64_t *v)
15678 }
15679
15680 #define atomic64_inc_return(v) (atomic64_add_return(1, (v)))
15681+static inline long atomic64_inc_return_unchecked(atomic64_unchecked_t *v)
15682+{
15683+ return atomic64_add_return_unchecked(1, v);
15684+}
15685 #define atomic64_dec_return(v) (atomic64_sub_return(1, (v)))
15686
15687 static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new)
15688@@ -166,6 +292,11 @@ static inline long atomic64_cmpxchg(atomic64_t *v, long old, long new)
15689 return cmpxchg(&v->counter, old, new);
15690 }
15691
15692+static inline long atomic64_cmpxchg_unchecked(atomic64_unchecked_t *v, long old, long new)
15693+{
15694+ return cmpxchg(&v->counter, old, new);
15695+}
15696+
15697 static inline long atomic64_xchg(atomic64_t *v, long new)
15698 {
15699 return xchg(&v->counter, new);
15700@@ -182,17 +313,30 @@ static inline long atomic64_xchg(atomic64_t *v, long new)
15701 */
15702 static inline int atomic64_add_unless(atomic64_t *v, long a, long u)
15703 {
15704- long c, old;
15705+ long c, old, new;
15706 c = atomic64_read(v);
15707 for (;;) {
15708- if (unlikely(c == (u)))
15709+ if (unlikely(c == u))
15710 break;
15711- old = atomic64_cmpxchg((v), c, c + (a));
15712+
15713+ asm volatile("add %2,%0\n"
15714+
15715+#ifdef CONFIG_PAX_REFCOUNT
15716+ "jno 0f\n"
15717+ "sub %2,%0\n"
15718+ "int $4\n0:\n"
15719+ _ASM_EXTABLE(0b, 0b)
15720+#endif
15721+
15722+ : "=r" (new)
15723+ : "0" (c), "ir" (a));
15724+
15725+ old = atomic64_cmpxchg(v, c, new);
15726 if (likely(old == c))
15727 break;
15728 c = old;
15729 }
15730- return c != (u);
15731+ return c != u;
15732 }
15733
15734 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0)
15735diff --git a/arch/x86/include/asm/barrier.h b/arch/x86/include/asm/barrier.h
15736index 69bbb48..32517fe 100644
15737--- a/arch/x86/include/asm/barrier.h
15738+++ b/arch/x86/include/asm/barrier.h
15739@@ -107,7 +107,7 @@
15740 do { \
15741 compiletime_assert_atomic_type(*p); \
15742 smp_mb(); \
15743- ACCESS_ONCE(*p) = (v); \
15744+ ACCESS_ONCE_RW(*p) = (v); \
15745 } while (0)
15746
15747 #define smp_load_acquire(p) \
15748@@ -124,7 +124,7 @@ do { \
15749 do { \
15750 compiletime_assert_atomic_type(*p); \
15751 barrier(); \
15752- ACCESS_ONCE(*p) = (v); \
15753+ ACCESS_ONCE_RW(*p) = (v); \
15754 } while (0)
15755
15756 #define smp_load_acquire(p) \
15757diff --git a/arch/x86/include/asm/bitops.h b/arch/x86/include/asm/bitops.h
15758index 9fc1af7..776d75a 100644
15759--- a/arch/x86/include/asm/bitops.h
15760+++ b/arch/x86/include/asm/bitops.h
15761@@ -49,7 +49,7 @@
15762 * a mask operation on a byte.
15763 */
15764 #define IS_IMMEDIATE(nr) (__builtin_constant_p(nr))
15765-#define CONST_MASK_ADDR(nr, addr) BITOP_ADDR((void *)(addr) + ((nr)>>3))
15766+#define CONST_MASK_ADDR(nr, addr) BITOP_ADDR((volatile void *)(addr) + ((nr)>>3))
15767 #define CONST_MASK(nr) (1 << ((nr) & 7))
15768
15769 /**
15770@@ -205,7 +205,7 @@ static inline void change_bit(long nr, volatile unsigned long *addr)
15771 */
15772 static inline int test_and_set_bit(long nr, volatile unsigned long *addr)
15773 {
15774- GEN_BINARY_RMWcc(LOCK_PREFIX "bts", *addr, "Ir", nr, "%0", "c");
15775+ GEN_BINARY_RMWcc_unchecked(LOCK_PREFIX "bts", *addr, "Ir", nr, "%0", "c");
15776 }
15777
15778 /**
15779@@ -251,7 +251,7 @@ static inline int __test_and_set_bit(long nr, volatile unsigned long *addr)
15780 */
15781 static inline int test_and_clear_bit(long nr, volatile unsigned long *addr)
15782 {
15783- GEN_BINARY_RMWcc(LOCK_PREFIX "btr", *addr, "Ir", nr, "%0", "c");
15784+ GEN_BINARY_RMWcc_unchecked(LOCK_PREFIX "btr", *addr, "Ir", nr, "%0", "c");
15785 }
15786
15787 /**
15788@@ -304,7 +304,7 @@ static inline int __test_and_change_bit(long nr, volatile unsigned long *addr)
15789 */
15790 static inline int test_and_change_bit(long nr, volatile unsigned long *addr)
15791 {
15792- GEN_BINARY_RMWcc(LOCK_PREFIX "btc", *addr, "Ir", nr, "%0", "c");
15793+ GEN_BINARY_RMWcc_unchecked(LOCK_PREFIX "btc", *addr, "Ir", nr, "%0", "c");
15794 }
15795
15796 static __always_inline int constant_test_bit(long nr, const volatile unsigned long *addr)
15797@@ -345,7 +345,7 @@ static int test_bit(int nr, const volatile unsigned long *addr);
15798 *
15799 * Undefined if no bit exists, so code should check against 0 first.
15800 */
15801-static inline unsigned long __ffs(unsigned long word)
15802+static inline unsigned long __intentional_overflow(-1) __ffs(unsigned long word)
15803 {
15804 asm("rep; bsf %1,%0"
15805 : "=r" (word)
15806@@ -359,7 +359,7 @@ static inline unsigned long __ffs(unsigned long word)
15807 *
15808 * Undefined if no zero exists, so code should check against ~0UL first.
15809 */
15810-static inline unsigned long ffz(unsigned long word)
15811+static inline unsigned long __intentional_overflow(-1) ffz(unsigned long word)
15812 {
15813 asm("rep; bsf %1,%0"
15814 : "=r" (word)
15815@@ -373,7 +373,7 @@ static inline unsigned long ffz(unsigned long word)
15816 *
15817 * Undefined if no set bit exists, so code should check against 0 first.
15818 */
15819-static inline unsigned long __fls(unsigned long word)
15820+static inline unsigned long __intentional_overflow(-1) __fls(unsigned long word)
15821 {
15822 asm("bsr %1,%0"
15823 : "=r" (word)
15824@@ -436,7 +436,7 @@ static inline int ffs(int x)
15825 * set bit if value is nonzero. The last (most significant) bit is
15826 * at position 32.
15827 */
15828-static inline int fls(int x)
15829+static inline int __intentional_overflow(-1) fls(int x)
15830 {
15831 int r;
15832
15833@@ -478,7 +478,7 @@ static inline int fls(int x)
15834 * at position 64.
15835 */
15836 #ifdef CONFIG_X86_64
15837-static __always_inline int fls64(__u64 x)
15838+static __always_inline __intentional_overflow(-1) int fls64(__u64 x)
15839 {
15840 int bitpos = -1;
15841 /*
15842diff --git a/arch/x86/include/asm/boot.h b/arch/x86/include/asm/boot.h
15843index 4fa687a..60f2d39 100644
15844--- a/arch/x86/include/asm/boot.h
15845+++ b/arch/x86/include/asm/boot.h
15846@@ -6,10 +6,15 @@
15847 #include <uapi/asm/boot.h>
15848
15849 /* Physical address where kernel should be loaded. */
15850-#define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
15851+#define ____LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
15852 + (CONFIG_PHYSICAL_ALIGN - 1)) \
15853 & ~(CONFIG_PHYSICAL_ALIGN - 1))
15854
15855+#ifndef __ASSEMBLY__
15856+extern unsigned char __LOAD_PHYSICAL_ADDR[];
15857+#define LOAD_PHYSICAL_ADDR ((unsigned long)__LOAD_PHYSICAL_ADDR)
15858+#endif
15859+
15860 /* Minimum kernel alignment, as a power of two */
15861 #ifdef CONFIG_X86_64
15862 #define MIN_KERNEL_ALIGN_LG2 PMD_SHIFT
15863diff --git a/arch/x86/include/asm/cache.h b/arch/x86/include/asm/cache.h
15864index 48f99f1..d78ebf9 100644
15865--- a/arch/x86/include/asm/cache.h
15866+++ b/arch/x86/include/asm/cache.h
15867@@ -5,12 +5,13 @@
15868
15869 /* L1 cache line size */
15870 #define L1_CACHE_SHIFT (CONFIG_X86_L1_CACHE_SHIFT)
15871-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
15872+#define L1_CACHE_BYTES (_AC(1,UL) << L1_CACHE_SHIFT)
15873
15874 #define __read_mostly __attribute__((__section__(".data..read_mostly")))
15875+#define __read_only __attribute__((__section__(".data..read_only")))
15876
15877 #define INTERNODE_CACHE_SHIFT CONFIG_X86_INTERNODE_CACHE_SHIFT
15878-#define INTERNODE_CACHE_BYTES (1 << INTERNODE_CACHE_SHIFT)
15879+#define INTERNODE_CACHE_BYTES (_AC(1,UL) << INTERNODE_CACHE_SHIFT)
15880
15881 #ifdef CONFIG_X86_VSMP
15882 #ifdef CONFIG_SMP
15883diff --git a/arch/x86/include/asm/cacheflush.h b/arch/x86/include/asm/cacheflush.h
15884index 9863ee3..4a1f8e1 100644
15885--- a/arch/x86/include/asm/cacheflush.h
15886+++ b/arch/x86/include/asm/cacheflush.h
15887@@ -27,7 +27,7 @@ static inline unsigned long get_page_memtype(struct page *pg)
15888 unsigned long pg_flags = pg->flags & _PGMT_MASK;
15889
15890 if (pg_flags == _PGMT_DEFAULT)
15891- return -1;
15892+ return ~0UL;
15893 else if (pg_flags == _PGMT_WC)
15894 return _PAGE_CACHE_WC;
15895 else if (pg_flags == _PGMT_UC_MINUS)
15896diff --git a/arch/x86/include/asm/calling.h b/arch/x86/include/asm/calling.h
15897index cb4c73b..c473c29 100644
15898--- a/arch/x86/include/asm/calling.h
15899+++ b/arch/x86/include/asm/calling.h
15900@@ -82,103 +82,113 @@ For 32-bit we have the following conventions - kernel is built with
15901 #define RSP 152
15902 #define SS 160
15903
15904-#define ARGOFFSET R11
15905-#define SWFRAME ORIG_RAX
15906+#define ARGOFFSET R15
15907
15908 .macro SAVE_ARGS addskip=0, save_rcx=1, save_r891011=1
15909- subq $9*8+\addskip, %rsp
15910- CFI_ADJUST_CFA_OFFSET 9*8+\addskip
15911- movq_cfi rdi, 8*8
15912- movq_cfi rsi, 7*8
15913- movq_cfi rdx, 6*8
15914+ subq $ORIG_RAX-ARGOFFSET+\addskip, %rsp
15915+ CFI_ADJUST_CFA_OFFSET ORIG_RAX-ARGOFFSET+\addskip
15916+ movq_cfi rdi, RDI
15917+ movq_cfi rsi, RSI
15918+ movq_cfi rdx, RDX
15919
15920 .if \save_rcx
15921- movq_cfi rcx, 5*8
15922+ movq_cfi rcx, RCX
15923 .endif
15924
15925- movq_cfi rax, 4*8
15926+ movq_cfi rax, RAX
15927
15928 .if \save_r891011
15929- movq_cfi r8, 3*8
15930- movq_cfi r9, 2*8
15931- movq_cfi r10, 1*8
15932- movq_cfi r11, 0*8
15933+ movq_cfi r8, R8
15934+ movq_cfi r9, R9
15935+ movq_cfi r10, R10
15936+ movq_cfi r11, R11
15937 .endif
15938
15939+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
15940+ movq_cfi r12, R12
15941+#endif
15942+
15943 .endm
15944
15945-#define ARG_SKIP (9*8)
15946+#define ARG_SKIP ORIG_RAX
15947
15948 .macro RESTORE_ARGS rstor_rax=1, addskip=0, rstor_rcx=1, rstor_r11=1, \
15949 rstor_r8910=1, rstor_rdx=1
15950+
15951+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
15952+ movq_cfi_restore R12, r12
15953+#endif
15954+
15955 .if \rstor_r11
15956- movq_cfi_restore 0*8, r11
15957+ movq_cfi_restore R11, r11
15958 .endif
15959
15960 .if \rstor_r8910
15961- movq_cfi_restore 1*8, r10
15962- movq_cfi_restore 2*8, r9
15963- movq_cfi_restore 3*8, r8
15964+ movq_cfi_restore R10, r10
15965+ movq_cfi_restore R9, r9
15966+ movq_cfi_restore R8, r8
15967 .endif
15968
15969 .if \rstor_rax
15970- movq_cfi_restore 4*8, rax
15971+ movq_cfi_restore RAX, rax
15972 .endif
15973
15974 .if \rstor_rcx
15975- movq_cfi_restore 5*8, rcx
15976+ movq_cfi_restore RCX, rcx
15977 .endif
15978
15979 .if \rstor_rdx
15980- movq_cfi_restore 6*8, rdx
15981+ movq_cfi_restore RDX, rdx
15982 .endif
15983
15984- movq_cfi_restore 7*8, rsi
15985- movq_cfi_restore 8*8, rdi
15986+ movq_cfi_restore RSI, rsi
15987+ movq_cfi_restore RDI, rdi
15988
15989- .if ARG_SKIP+\addskip > 0
15990- addq $ARG_SKIP+\addskip, %rsp
15991- CFI_ADJUST_CFA_OFFSET -(ARG_SKIP+\addskip)
15992+ .if ORIG_RAX+\addskip > 0
15993+ addq $ORIG_RAX+\addskip, %rsp
15994+ CFI_ADJUST_CFA_OFFSET -(ORIG_RAX+\addskip)
15995 .endif
15996 .endm
15997
15998- .macro LOAD_ARGS offset, skiprax=0
15999- movq \offset(%rsp), %r11
16000- movq \offset+8(%rsp), %r10
16001- movq \offset+16(%rsp), %r9
16002- movq \offset+24(%rsp), %r8
16003- movq \offset+40(%rsp), %rcx
16004- movq \offset+48(%rsp), %rdx
16005- movq \offset+56(%rsp), %rsi
16006- movq \offset+64(%rsp), %rdi
16007+ .macro LOAD_ARGS skiprax=0
16008+ movq R11(%rsp), %r11
16009+ movq R10(%rsp), %r10
16010+ movq R9(%rsp), %r9
16011+ movq R8(%rsp), %r8
16012+ movq RCX(%rsp), %rcx
16013+ movq RDX(%rsp), %rdx
16014+ movq RSI(%rsp), %rsi
16015+ movq RDI(%rsp), %rdi
16016 .if \skiprax
16017 .else
16018- movq \offset+72(%rsp), %rax
16019+ movq RAX(%rsp), %rax
16020 .endif
16021 .endm
16022
16023-#define REST_SKIP (6*8)
16024-
16025 .macro SAVE_REST
16026- subq $REST_SKIP, %rsp
16027- CFI_ADJUST_CFA_OFFSET REST_SKIP
16028- movq_cfi rbx, 5*8
16029- movq_cfi rbp, 4*8
16030- movq_cfi r12, 3*8
16031- movq_cfi r13, 2*8
16032- movq_cfi r14, 1*8
16033- movq_cfi r15, 0*8
16034+ movq_cfi rbx, RBX
16035+ movq_cfi rbp, RBP
16036+
16037+#ifndef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
16038+ movq_cfi r12, R12
16039+#endif
16040+
16041+ movq_cfi r13, R13
16042+ movq_cfi r14, R14
16043+ movq_cfi r15, R15
16044 .endm
16045
16046 .macro RESTORE_REST
16047- movq_cfi_restore 0*8, r15
16048- movq_cfi_restore 1*8, r14
16049- movq_cfi_restore 2*8, r13
16050- movq_cfi_restore 3*8, r12
16051- movq_cfi_restore 4*8, rbp
16052- movq_cfi_restore 5*8, rbx
16053- addq $REST_SKIP, %rsp
16054- CFI_ADJUST_CFA_OFFSET -(REST_SKIP)
16055+ movq_cfi_restore R15, r15
16056+ movq_cfi_restore R14, r14
16057+ movq_cfi_restore R13, r13
16058+
16059+#ifndef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
16060+ movq_cfi_restore R12, r12
16061+#endif
16062+
16063+ movq_cfi_restore RBP, rbp
16064+ movq_cfi_restore RBX, rbx
16065 .endm
16066
16067 .macro SAVE_ALL
16068diff --git a/arch/x86/include/asm/checksum_32.h b/arch/x86/include/asm/checksum_32.h
16069index f50de69..2b0a458 100644
16070--- a/arch/x86/include/asm/checksum_32.h
16071+++ b/arch/x86/include/asm/checksum_32.h
16072@@ -31,6 +31,14 @@ asmlinkage __wsum csum_partial_copy_generic(const void *src, void *dst,
16073 int len, __wsum sum,
16074 int *src_err_ptr, int *dst_err_ptr);
16075
16076+asmlinkage __wsum csum_partial_copy_generic_to_user(const void *src, void *dst,
16077+ int len, __wsum sum,
16078+ int *src_err_ptr, int *dst_err_ptr);
16079+
16080+asmlinkage __wsum csum_partial_copy_generic_from_user(const void *src, void *dst,
16081+ int len, __wsum sum,
16082+ int *src_err_ptr, int *dst_err_ptr);
16083+
16084 /*
16085 * Note: when you get a NULL pointer exception here this means someone
16086 * passed in an incorrect kernel address to one of these functions.
16087@@ -53,7 +61,7 @@ static inline __wsum csum_partial_copy_from_user(const void __user *src,
16088
16089 might_sleep();
16090 stac();
16091- ret = csum_partial_copy_generic((__force void *)src, dst,
16092+ ret = csum_partial_copy_generic_from_user((__force void *)src, dst,
16093 len, sum, err_ptr, NULL);
16094 clac();
16095
16096@@ -187,7 +195,7 @@ static inline __wsum csum_and_copy_to_user(const void *src,
16097 might_sleep();
16098 if (access_ok(VERIFY_WRITE, dst, len)) {
16099 stac();
16100- ret = csum_partial_copy_generic(src, (__force void *)dst,
16101+ ret = csum_partial_copy_generic_to_user(src, (__force void *)dst,
16102 len, sum, NULL, err_ptr);
16103 clac();
16104 return ret;
16105diff --git a/arch/x86/include/asm/cmpxchg.h b/arch/x86/include/asm/cmpxchg.h
16106index d47786a..2d8883e 100644
16107--- a/arch/x86/include/asm/cmpxchg.h
16108+++ b/arch/x86/include/asm/cmpxchg.h
16109@@ -14,8 +14,12 @@ extern void __cmpxchg_wrong_size(void)
16110 __compiletime_error("Bad argument size for cmpxchg");
16111 extern void __xadd_wrong_size(void)
16112 __compiletime_error("Bad argument size for xadd");
16113+extern void __xadd_check_overflow_wrong_size(void)
16114+ __compiletime_error("Bad argument size for xadd_check_overflow");
16115 extern void __add_wrong_size(void)
16116 __compiletime_error("Bad argument size for add");
16117+extern void __add_check_overflow_wrong_size(void)
16118+ __compiletime_error("Bad argument size for add_check_overflow");
16119
16120 /*
16121 * Constants for operation sizes. On 32-bit, the 64-bit size it set to
16122@@ -67,6 +71,38 @@ extern void __add_wrong_size(void)
16123 __ret; \
16124 })
16125
16126+#ifdef CONFIG_PAX_REFCOUNT
16127+#define __xchg_op_check_overflow(ptr, arg, op, lock) \
16128+ ({ \
16129+ __typeof__ (*(ptr)) __ret = (arg); \
16130+ switch (sizeof(*(ptr))) { \
16131+ case __X86_CASE_L: \
16132+ asm volatile (lock #op "l %0, %1\n" \
16133+ "jno 0f\n" \
16134+ "mov %0,%1\n" \
16135+ "int $4\n0:\n" \
16136+ _ASM_EXTABLE(0b, 0b) \
16137+ : "+r" (__ret), "+m" (*(ptr)) \
16138+ : : "memory", "cc"); \
16139+ break; \
16140+ case __X86_CASE_Q: \
16141+ asm volatile (lock #op "q %q0, %1\n" \
16142+ "jno 0f\n" \
16143+ "mov %0,%1\n" \
16144+ "int $4\n0:\n" \
16145+ _ASM_EXTABLE(0b, 0b) \
16146+ : "+r" (__ret), "+m" (*(ptr)) \
16147+ : : "memory", "cc"); \
16148+ break; \
16149+ default: \
16150+ __ ## op ## _check_overflow_wrong_size(); \
16151+ } \
16152+ __ret; \
16153+ })
16154+#else
16155+#define __xchg_op_check_overflow(ptr, arg, op, lock) __xchg_op(ptr, arg, op, lock)
16156+#endif
16157+
16158 /*
16159 * Note: no "lock" prefix even on SMP: xchg always implies lock anyway.
16160 * Since this is generally used to protect other memory information, we
16161@@ -167,6 +203,9 @@ extern void __add_wrong_size(void)
16162 #define xadd_sync(ptr, inc) __xadd((ptr), (inc), "lock; ")
16163 #define xadd_local(ptr, inc) __xadd((ptr), (inc), "")
16164
16165+#define __xadd_check_overflow(ptr, inc, lock) __xchg_op_check_overflow((ptr), (inc), xadd, lock)
16166+#define xadd_check_overflow(ptr, inc) __xadd_check_overflow((ptr), (inc), LOCK_PREFIX)
16167+
16168 #define __add(ptr, inc, lock) \
16169 ({ \
16170 __typeof__ (*(ptr)) __ret = (inc); \
16171diff --git a/arch/x86/include/asm/compat.h b/arch/x86/include/asm/compat.h
16172index 59c6c40..5e0b22c 100644
16173--- a/arch/x86/include/asm/compat.h
16174+++ b/arch/x86/include/asm/compat.h
16175@@ -41,7 +41,7 @@ typedef s64 __attribute__((aligned(4))) compat_s64;
16176 typedef u32 compat_uint_t;
16177 typedef u32 compat_ulong_t;
16178 typedef u64 __attribute__((aligned(4))) compat_u64;
16179-typedef u32 compat_uptr_t;
16180+typedef u32 __user compat_uptr_t;
16181
16182 struct compat_timespec {
16183 compat_time_t tv_sec;
16184diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h
16185index e265ff9..72c253b 100644
16186--- a/arch/x86/include/asm/cpufeature.h
16187+++ b/arch/x86/include/asm/cpufeature.h
16188@@ -203,7 +203,7 @@
16189 #define X86_FEATURE_DECODEASSISTS (8*32+12) /* AMD Decode Assists support */
16190 #define X86_FEATURE_PAUSEFILTER (8*32+13) /* AMD filtered pause intercept */
16191 #define X86_FEATURE_PFTHRESHOLD (8*32+14) /* AMD pause filter threshold */
16192-
16193+#define X86_FEATURE_STRONGUDEREF (8*32+31) /* PaX PCID based strong UDEREF */
16194
16195 /* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx), word 9 */
16196 #define X86_FEATURE_FSGSBASE (9*32+ 0) /* {RD/WR}{FS/GS}BASE instructions*/
16197@@ -211,7 +211,7 @@
16198 #define X86_FEATURE_BMI1 (9*32+ 3) /* 1st group bit manipulation extensions */
16199 #define X86_FEATURE_HLE (9*32+ 4) /* Hardware Lock Elision */
16200 #define X86_FEATURE_AVX2 (9*32+ 5) /* AVX2 instructions */
16201-#define X86_FEATURE_SMEP (9*32+ 7) /* Supervisor Mode Execution Protection */
16202+#define X86_FEATURE_SMEP (9*32+ 7) /* Supervisor Mode Execution Prevention */
16203 #define X86_FEATURE_BMI2 (9*32+ 8) /* 2nd group bit manipulation extensions */
16204 #define X86_FEATURE_ERMS (9*32+ 9) /* Enhanced REP MOVSB/STOSB */
16205 #define X86_FEATURE_INVPCID (9*32+10) /* Invalidate Processor Context ID */
16206@@ -359,6 +359,7 @@ extern const char * const x86_power_flags[32];
16207 #undef cpu_has_centaur_mcr
16208 #define cpu_has_centaur_mcr 0
16209
16210+#define cpu_has_pcid boot_cpu_has(X86_FEATURE_PCID)
16211 #endif /* CONFIG_X86_64 */
16212
16213 #if __GNUC__ >= 4
16214@@ -411,7 +412,8 @@ static __always_inline __pure bool __static_cpu_has(u16 bit)
16215
16216 #ifdef CONFIG_X86_DEBUG_STATIC_CPU_HAS
16217 t_warn:
16218- warn_pre_alternatives();
16219+ if (bit != X86_FEATURE_PCID && bit != X86_FEATURE_INVPCID)
16220+ warn_pre_alternatives();
16221 return false;
16222 #endif
16223
16224@@ -431,7 +433,7 @@ static __always_inline __pure bool __static_cpu_has(u16 bit)
16225 ".section .discard,\"aw\",@progbits\n"
16226 " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */
16227 ".previous\n"
16228- ".section .altinstr_replacement,\"ax\"\n"
16229+ ".section .altinstr_replacement,\"a\"\n"
16230 "3: movb $1,%0\n"
16231 "4:\n"
16232 ".previous\n"
16233@@ -468,7 +470,7 @@ static __always_inline __pure bool _static_cpu_has_safe(u16 bit)
16234 " .byte 2b - 1b\n" /* src len */
16235 " .byte 4f - 3f\n" /* repl len */
16236 ".previous\n"
16237- ".section .altinstr_replacement,\"ax\"\n"
16238+ ".section .altinstr_replacement,\"a\"\n"
16239 "3: .byte 0xe9\n .long %l[t_no] - 2b\n"
16240 "4:\n"
16241 ".previous\n"
16242@@ -501,7 +503,7 @@ static __always_inline __pure bool _static_cpu_has_safe(u16 bit)
16243 ".section .discard,\"aw\",@progbits\n"
16244 " .byte 0xff + (4f-3f) - (2b-1b)\n" /* size check */
16245 ".previous\n"
16246- ".section .altinstr_replacement,\"ax\"\n"
16247+ ".section .altinstr_replacement,\"a\"\n"
16248 "3: movb $0,%0\n"
16249 "4:\n"
16250 ".previous\n"
16251@@ -515,7 +517,7 @@ static __always_inline __pure bool _static_cpu_has_safe(u16 bit)
16252 ".section .discard,\"aw\",@progbits\n"
16253 " .byte 0xff + (6f-5f) - (4b-3b)\n" /* size check */
16254 ".previous\n"
16255- ".section .altinstr_replacement,\"ax\"\n"
16256+ ".section .altinstr_replacement,\"a\"\n"
16257 "5: movb $1,%0\n"
16258 "6:\n"
16259 ".previous\n"
16260diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h
16261index 50d033a..37deb26 100644
16262--- a/arch/x86/include/asm/desc.h
16263+++ b/arch/x86/include/asm/desc.h
16264@@ -4,6 +4,7 @@
16265 #include <asm/desc_defs.h>
16266 #include <asm/ldt.h>
16267 #include <asm/mmu.h>
16268+#include <asm/pgtable.h>
16269
16270 #include <linux/smp.h>
16271 #include <linux/percpu.h>
16272@@ -17,6 +18,7 @@ static inline void fill_ldt(struct desc_struct *desc, const struct user_desc *in
16273
16274 desc->type = (info->read_exec_only ^ 1) << 1;
16275 desc->type |= info->contents << 2;
16276+ desc->type |= info->seg_not_present ^ 1;
16277
16278 desc->s = 1;
16279 desc->dpl = 0x3;
16280@@ -35,19 +37,14 @@ static inline void fill_ldt(struct desc_struct *desc, const struct user_desc *in
16281 }
16282
16283 extern struct desc_ptr idt_descr;
16284-extern gate_desc idt_table[];
16285-extern struct desc_ptr debug_idt_descr;
16286-extern gate_desc debug_idt_table[];
16287-
16288-struct gdt_page {
16289- struct desc_struct gdt[GDT_ENTRIES];
16290-} __attribute__((aligned(PAGE_SIZE)));
16291-
16292-DECLARE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page);
16293+extern gate_desc idt_table[IDT_ENTRIES];
16294+extern const struct desc_ptr debug_idt_descr;
16295+extern gate_desc debug_idt_table[IDT_ENTRIES];
16296
16297+extern struct desc_struct cpu_gdt_table[NR_CPUS][PAGE_SIZE / sizeof(struct desc_struct)];
16298 static inline struct desc_struct *get_cpu_gdt_table(unsigned int cpu)
16299 {
16300- return per_cpu(gdt_page, cpu).gdt;
16301+ return cpu_gdt_table[cpu];
16302 }
16303
16304 #ifdef CONFIG_X86_64
16305@@ -72,8 +69,14 @@ static inline void pack_gate(gate_desc *gate, unsigned char type,
16306 unsigned long base, unsigned dpl, unsigned flags,
16307 unsigned short seg)
16308 {
16309- gate->a = (seg << 16) | (base & 0xffff);
16310- gate->b = (base & 0xffff0000) | (((0x80 | type | (dpl << 5)) & 0xff) << 8);
16311+ gate->gate.offset_low = base;
16312+ gate->gate.seg = seg;
16313+ gate->gate.reserved = 0;
16314+ gate->gate.type = type;
16315+ gate->gate.s = 0;
16316+ gate->gate.dpl = dpl;
16317+ gate->gate.p = 1;
16318+ gate->gate.offset_high = base >> 16;
16319 }
16320
16321 #endif
16322@@ -118,12 +121,16 @@ static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries)
16323
16324 static inline void native_write_idt_entry(gate_desc *idt, int entry, const gate_desc *gate)
16325 {
16326+ pax_open_kernel();
16327 memcpy(&idt[entry], gate, sizeof(*gate));
16328+ pax_close_kernel();
16329 }
16330
16331 static inline void native_write_ldt_entry(struct desc_struct *ldt, int entry, const void *desc)
16332 {
16333+ pax_open_kernel();
16334 memcpy(&ldt[entry], desc, 8);
16335+ pax_close_kernel();
16336 }
16337
16338 static inline void
16339@@ -137,7 +144,9 @@ native_write_gdt_entry(struct desc_struct *gdt, int entry, const void *desc, int
16340 default: size = sizeof(*gdt); break;
16341 }
16342
16343+ pax_open_kernel();
16344 memcpy(&gdt[entry], desc, size);
16345+ pax_close_kernel();
16346 }
16347
16348 static inline void pack_descriptor(struct desc_struct *desc, unsigned long base,
16349@@ -210,7 +219,9 @@ static inline void native_set_ldt(const void *addr, unsigned int entries)
16350
16351 static inline void native_load_tr_desc(void)
16352 {
16353+ pax_open_kernel();
16354 asm volatile("ltr %w0"::"q" (GDT_ENTRY_TSS*8));
16355+ pax_close_kernel();
16356 }
16357
16358 static inline void native_load_gdt(const struct desc_ptr *dtr)
16359@@ -247,8 +258,10 @@ static inline void native_load_tls(struct thread_struct *t, unsigned int cpu)
16360 struct desc_struct *gdt = get_cpu_gdt_table(cpu);
16361 unsigned int i;
16362
16363+ pax_open_kernel();
16364 for (i = 0; i < GDT_ENTRY_TLS_ENTRIES; i++)
16365 gdt[GDT_ENTRY_TLS_MIN + i] = t->tls_array[i];
16366+ pax_close_kernel();
16367 }
16368
16369 #define _LDT_empty(info) \
16370@@ -287,7 +300,7 @@ static inline void load_LDT(mm_context_t *pc)
16371 preempt_enable();
16372 }
16373
16374-static inline unsigned long get_desc_base(const struct desc_struct *desc)
16375+static inline unsigned long __intentional_overflow(-1) get_desc_base(const struct desc_struct *desc)
16376 {
16377 return (unsigned)(desc->base0 | ((desc->base1) << 16) | ((desc->base2) << 24));
16378 }
16379@@ -311,7 +324,7 @@ static inline void set_desc_limit(struct desc_struct *desc, unsigned long limit)
16380 }
16381
16382 #ifdef CONFIG_X86_64
16383-static inline void set_nmi_gate(int gate, void *addr)
16384+static inline void set_nmi_gate(int gate, const void *addr)
16385 {
16386 gate_desc s;
16387
16388@@ -321,14 +334,14 @@ static inline void set_nmi_gate(int gate, void *addr)
16389 #endif
16390
16391 #ifdef CONFIG_TRACING
16392-extern struct desc_ptr trace_idt_descr;
16393-extern gate_desc trace_idt_table[];
16394+extern const struct desc_ptr trace_idt_descr;
16395+extern gate_desc trace_idt_table[IDT_ENTRIES];
16396 static inline void write_trace_idt_entry(int entry, const gate_desc *gate)
16397 {
16398 write_idt_entry(trace_idt_table, entry, gate);
16399 }
16400
16401-static inline void _trace_set_gate(int gate, unsigned type, void *addr,
16402+static inline void _trace_set_gate(int gate, unsigned type, const void *addr,
16403 unsigned dpl, unsigned ist, unsigned seg)
16404 {
16405 gate_desc s;
16406@@ -348,7 +361,7 @@ static inline void write_trace_idt_entry(int entry, const gate_desc *gate)
16407 #define _trace_set_gate(gate, type, addr, dpl, ist, seg)
16408 #endif
16409
16410-static inline void _set_gate(int gate, unsigned type, void *addr,
16411+static inline void _set_gate(int gate, unsigned type, const void *addr,
16412 unsigned dpl, unsigned ist, unsigned seg)
16413 {
16414 gate_desc s;
16415@@ -371,9 +384,9 @@ static inline void _set_gate(int gate, unsigned type, void *addr,
16416 #define set_intr_gate(n, addr) \
16417 do { \
16418 BUG_ON((unsigned)n > 0xFF); \
16419- _set_gate(n, GATE_INTERRUPT, (void *)addr, 0, 0, \
16420+ _set_gate(n, GATE_INTERRUPT, (const void *)addr, 0, 0, \
16421 __KERNEL_CS); \
16422- _trace_set_gate(n, GATE_INTERRUPT, (void *)trace_##addr,\
16423+ _trace_set_gate(n, GATE_INTERRUPT, (const void *)trace_##addr,\
16424 0, 0, __KERNEL_CS); \
16425 } while (0)
16426
16427@@ -401,19 +414,19 @@ static inline void alloc_system_vector(int vector)
16428 /*
16429 * This routine sets up an interrupt gate at directory privilege level 3.
16430 */
16431-static inline void set_system_intr_gate(unsigned int n, void *addr)
16432+static inline void set_system_intr_gate(unsigned int n, const void *addr)
16433 {
16434 BUG_ON((unsigned)n > 0xFF);
16435 _set_gate(n, GATE_INTERRUPT, addr, 0x3, 0, __KERNEL_CS);
16436 }
16437
16438-static inline void set_system_trap_gate(unsigned int n, void *addr)
16439+static inline void set_system_trap_gate(unsigned int n, const void *addr)
16440 {
16441 BUG_ON((unsigned)n > 0xFF);
16442 _set_gate(n, GATE_TRAP, addr, 0x3, 0, __KERNEL_CS);
16443 }
16444
16445-static inline void set_trap_gate(unsigned int n, void *addr)
16446+static inline void set_trap_gate(unsigned int n, const void *addr)
16447 {
16448 BUG_ON((unsigned)n > 0xFF);
16449 _set_gate(n, GATE_TRAP, addr, 0, 0, __KERNEL_CS);
16450@@ -422,16 +435,16 @@ static inline void set_trap_gate(unsigned int n, void *addr)
16451 static inline void set_task_gate(unsigned int n, unsigned int gdt_entry)
16452 {
16453 BUG_ON((unsigned)n > 0xFF);
16454- _set_gate(n, GATE_TASK, (void *)0, 0, 0, (gdt_entry<<3));
16455+ _set_gate(n, GATE_TASK, (const void *)0, 0, 0, (gdt_entry<<3));
16456 }
16457
16458-static inline void set_intr_gate_ist(int n, void *addr, unsigned ist)
16459+static inline void set_intr_gate_ist(int n, const void *addr, unsigned ist)
16460 {
16461 BUG_ON((unsigned)n > 0xFF);
16462 _set_gate(n, GATE_INTERRUPT, addr, 0, ist, __KERNEL_CS);
16463 }
16464
16465-static inline void set_system_intr_gate_ist(int n, void *addr, unsigned ist)
16466+static inline void set_system_intr_gate_ist(int n, const void *addr, unsigned ist)
16467 {
16468 BUG_ON((unsigned)n > 0xFF);
16469 _set_gate(n, GATE_INTERRUPT, addr, 0x3, ist, __KERNEL_CS);
16470@@ -503,4 +516,17 @@ static inline void load_current_idt(void)
16471 else
16472 load_idt((const struct desc_ptr *)&idt_descr);
16473 }
16474+
16475+#ifdef CONFIG_X86_32
16476+static inline void set_user_cs(unsigned long base, unsigned long limit, int cpu)
16477+{
16478+ struct desc_struct d;
16479+
16480+ if (likely(limit))
16481+ limit = (limit - 1UL) >> PAGE_SHIFT;
16482+ pack_descriptor(&d, base, limit, 0xFB, 0xC);
16483+ write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_DEFAULT_USER_CS, &d, DESCTYPE_S);
16484+}
16485+#endif
16486+
16487 #endif /* _ASM_X86_DESC_H */
16488diff --git a/arch/x86/include/asm/desc_defs.h b/arch/x86/include/asm/desc_defs.h
16489index 278441f..b95a174 100644
16490--- a/arch/x86/include/asm/desc_defs.h
16491+++ b/arch/x86/include/asm/desc_defs.h
16492@@ -31,6 +31,12 @@ struct desc_struct {
16493 unsigned base1: 8, type: 4, s: 1, dpl: 2, p: 1;
16494 unsigned limit: 4, avl: 1, l: 1, d: 1, g: 1, base2: 8;
16495 };
16496+ struct {
16497+ u16 offset_low;
16498+ u16 seg;
16499+ unsigned reserved: 8, type: 4, s: 1, dpl: 2, p: 1;
16500+ unsigned offset_high: 16;
16501+ } gate;
16502 };
16503 } __attribute__((packed));
16504
16505diff --git a/arch/x86/include/asm/div64.h b/arch/x86/include/asm/div64.h
16506index ced283a..ffe04cc 100644
16507--- a/arch/x86/include/asm/div64.h
16508+++ b/arch/x86/include/asm/div64.h
16509@@ -39,7 +39,7 @@
16510 __mod; \
16511 })
16512
16513-static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
16514+static inline u64 __intentional_overflow(-1) div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
16515 {
16516 union {
16517 u64 v64;
16518diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h
16519index 2c71182..731124d 100644
16520--- a/arch/x86/include/asm/elf.h
16521+++ b/arch/x86/include/asm/elf.h
16522@@ -243,7 +243,25 @@ extern int force_personality32;
16523 the loader. We need to make sure that it is out of the way of the program
16524 that it will "exec", and that there is sufficient room for the brk. */
16525
16526+#ifdef CONFIG_PAX_SEGMEXEC
16527+#define ELF_ET_DYN_BASE ((current->mm->pax_flags & MF_PAX_SEGMEXEC) ? SEGMEXEC_TASK_SIZE/3*2 : TASK_SIZE/3*2)
16528+#else
16529 #define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
16530+#endif
16531+
16532+#ifdef CONFIG_PAX_ASLR
16533+#ifdef CONFIG_X86_32
16534+#define PAX_ELF_ET_DYN_BASE 0x10000000UL
16535+
16536+#define PAX_DELTA_MMAP_LEN (current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16)
16537+#define PAX_DELTA_STACK_LEN (current->mm->pax_flags & MF_PAX_SEGMEXEC ? 15 : 16)
16538+#else
16539+#define PAX_ELF_ET_DYN_BASE 0x400000UL
16540+
16541+#define PAX_DELTA_MMAP_LEN ((test_thread_flag(TIF_ADDR32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3)
16542+#define PAX_DELTA_STACK_LEN ((test_thread_flag(TIF_ADDR32)) ? 16 : TASK_SIZE_MAX_SHIFT - PAGE_SHIFT - 3)
16543+#endif
16544+#endif
16545
16546 /* This yields a mask that user programs can use to figure out what
16547 instruction set this CPU supports. This could be done in user space,
16548@@ -292,16 +310,12 @@ do { \
16549
16550 #define ARCH_DLINFO \
16551 do { \
16552- if (vdso_enabled) \
16553- NEW_AUX_ENT(AT_SYSINFO_EHDR, \
16554- (unsigned long)current->mm->context.vdso); \
16555+ NEW_AUX_ENT(AT_SYSINFO_EHDR, current->mm->context.vdso); \
16556 } while (0)
16557
16558 #define ARCH_DLINFO_X32 \
16559 do { \
16560- if (vdso_enabled) \
16561- NEW_AUX_ENT(AT_SYSINFO_EHDR, \
16562- (unsigned long)current->mm->context.vdso); \
16563+ NEW_AUX_ENT(AT_SYSINFO_EHDR, current->mm->context.vdso); \
16564 } while (0)
16565
16566 #define AT_SYSINFO 32
16567@@ -316,7 +330,7 @@ else \
16568
16569 #endif /* !CONFIG_X86_32 */
16570
16571-#define VDSO_CURRENT_BASE ((unsigned long)current->mm->context.vdso)
16572+#define VDSO_CURRENT_BASE (current->mm->context.vdso)
16573
16574 #define VDSO_ENTRY \
16575 ((unsigned long)VDSO32_SYMBOL(VDSO_CURRENT_BASE, vsyscall))
16576@@ -332,9 +346,6 @@ extern int x32_setup_additional_pages(struct linux_binprm *bprm,
16577 extern int syscall32_setup_pages(struct linux_binprm *, int exstack);
16578 #define compat_arch_setup_additional_pages syscall32_setup_pages
16579
16580-extern unsigned long arch_randomize_brk(struct mm_struct *mm);
16581-#define arch_randomize_brk arch_randomize_brk
16582-
16583 /*
16584 * True on X86_32 or when emulating IA32 on X86_64
16585 */
16586diff --git a/arch/x86/include/asm/emergency-restart.h b/arch/x86/include/asm/emergency-restart.h
16587index 77a99ac..39ff7f5 100644
16588--- a/arch/x86/include/asm/emergency-restart.h
16589+++ b/arch/x86/include/asm/emergency-restart.h
16590@@ -1,6 +1,6 @@
16591 #ifndef _ASM_X86_EMERGENCY_RESTART_H
16592 #define _ASM_X86_EMERGENCY_RESTART_H
16593
16594-extern void machine_emergency_restart(void);
16595+extern void machine_emergency_restart(void) __noreturn;
16596
16597 #endif /* _ASM_X86_EMERGENCY_RESTART_H */
16598diff --git a/arch/x86/include/asm/floppy.h b/arch/x86/include/asm/floppy.h
16599index 1c7eefe..d0e4702 100644
16600--- a/arch/x86/include/asm/floppy.h
16601+++ b/arch/x86/include/asm/floppy.h
16602@@ -229,18 +229,18 @@ static struct fd_routine_l {
16603 int (*_dma_setup)(char *addr, unsigned long size, int mode, int io);
16604 } fd_routine[] = {
16605 {
16606- request_dma,
16607- free_dma,
16608- get_dma_residue,
16609- dma_mem_alloc,
16610- hard_dma_setup
16611+ ._request_dma = request_dma,
16612+ ._free_dma = free_dma,
16613+ ._get_dma_residue = get_dma_residue,
16614+ ._dma_mem_alloc = dma_mem_alloc,
16615+ ._dma_setup = hard_dma_setup
16616 },
16617 {
16618- vdma_request_dma,
16619- vdma_nop,
16620- vdma_get_dma_residue,
16621- vdma_mem_alloc,
16622- vdma_dma_setup
16623+ ._request_dma = vdma_request_dma,
16624+ ._free_dma = vdma_nop,
16625+ ._get_dma_residue = vdma_get_dma_residue,
16626+ ._dma_mem_alloc = vdma_mem_alloc,
16627+ ._dma_setup = vdma_dma_setup
16628 }
16629 };
16630
16631diff --git a/arch/x86/include/asm/fpu-internal.h b/arch/x86/include/asm/fpu-internal.h
16632index cea1c76..6c0d79b 100644
16633--- a/arch/x86/include/asm/fpu-internal.h
16634+++ b/arch/x86/include/asm/fpu-internal.h
16635@@ -124,8 +124,11 @@ static inline void sanitize_i387_state(struct task_struct *tsk)
16636 #define user_insn(insn, output, input...) \
16637 ({ \
16638 int err; \
16639+ pax_open_userland(); \
16640 asm volatile(ASM_STAC "\n" \
16641- "1:" #insn "\n\t" \
16642+ "1:" \
16643+ __copyuser_seg \
16644+ #insn "\n\t" \
16645 "2: " ASM_CLAC "\n" \
16646 ".section .fixup,\"ax\"\n" \
16647 "3: movl $-1,%[err]\n" \
16648@@ -134,6 +137,7 @@ static inline void sanitize_i387_state(struct task_struct *tsk)
16649 _ASM_EXTABLE(1b, 3b) \
16650 : [err] "=r" (err), output \
16651 : "0"(0), input); \
16652+ pax_close_userland(); \
16653 err; \
16654 })
16655
16656@@ -298,7 +302,7 @@ static inline int restore_fpu_checking(struct task_struct *tsk)
16657 "fnclex\n\t"
16658 "emms\n\t"
16659 "fildl %P[addr]" /* set F?P to defined value */
16660- : : [addr] "m" (tsk->thread.fpu.has_fpu));
16661+ : : [addr] "m" (init_tss[raw_smp_processor_id()].x86_tss.sp0));
16662 }
16663
16664 return fpu_restore_checking(&tsk->thread.fpu);
16665diff --git a/arch/x86/include/asm/futex.h b/arch/x86/include/asm/futex.h
16666index b4c1f54..e290c08 100644
16667--- a/arch/x86/include/asm/futex.h
16668+++ b/arch/x86/include/asm/futex.h
16669@@ -12,6 +12,7 @@
16670 #include <asm/smap.h>
16671
16672 #define __futex_atomic_op1(insn, ret, oldval, uaddr, oparg) \
16673+ typecheck(u32 __user *, uaddr); \
16674 asm volatile("\t" ASM_STAC "\n" \
16675 "1:\t" insn "\n" \
16676 "2:\t" ASM_CLAC "\n" \
16677@@ -20,15 +21,16 @@
16678 "\tjmp\t2b\n" \
16679 "\t.previous\n" \
16680 _ASM_EXTABLE(1b, 3b) \
16681- : "=r" (oldval), "=r" (ret), "+m" (*uaddr) \
16682+ : "=r" (oldval), "=r" (ret), "+m" (*(u32 __user *)____m(uaddr)) \
16683 : "i" (-EFAULT), "0" (oparg), "1" (0))
16684
16685 #define __futex_atomic_op2(insn, ret, oldval, uaddr, oparg) \
16686+ typecheck(u32 __user *, uaddr); \
16687 asm volatile("\t" ASM_STAC "\n" \
16688 "1:\tmovl %2, %0\n" \
16689 "\tmovl\t%0, %3\n" \
16690 "\t" insn "\n" \
16691- "2:\t" LOCK_PREFIX "cmpxchgl %3, %2\n" \
16692+ "2:\t" LOCK_PREFIX __copyuser_seg"cmpxchgl %3, %2\n" \
16693 "\tjnz\t1b\n" \
16694 "3:\t" ASM_CLAC "\n" \
16695 "\t.section .fixup,\"ax\"\n" \
16696@@ -38,7 +40,7 @@
16697 _ASM_EXTABLE(1b, 4b) \
16698 _ASM_EXTABLE(2b, 4b) \
16699 : "=&a" (oldval), "=&r" (ret), \
16700- "+m" (*uaddr), "=&r" (tem) \
16701+ "+m" (*(u32 __user *)____m(uaddr)), "=&r" (tem) \
16702 : "r" (oparg), "i" (-EFAULT), "1" (0))
16703
16704 static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
16705@@ -57,12 +59,13 @@ static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
16706
16707 pagefault_disable();
16708
16709+ pax_open_userland();
16710 switch (op) {
16711 case FUTEX_OP_SET:
16712- __futex_atomic_op1("xchgl %0, %2", ret, oldval, uaddr, oparg);
16713+ __futex_atomic_op1(__copyuser_seg"xchgl %0, %2", ret, oldval, uaddr, oparg);
16714 break;
16715 case FUTEX_OP_ADD:
16716- __futex_atomic_op1(LOCK_PREFIX "xaddl %0, %2", ret, oldval,
16717+ __futex_atomic_op1(LOCK_PREFIX __copyuser_seg"xaddl %0, %2", ret, oldval,
16718 uaddr, oparg);
16719 break;
16720 case FUTEX_OP_OR:
16721@@ -77,6 +80,7 @@ static inline int futex_atomic_op_inuser(int encoded_op, u32 __user *uaddr)
16722 default:
16723 ret = -ENOSYS;
16724 }
16725+ pax_close_userland();
16726
16727 pagefault_enable();
16728
16729diff --git a/arch/x86/include/asm/hw_irq.h b/arch/x86/include/asm/hw_irq.h
16730index a307b75..ec74ca2 100644
16731--- a/arch/x86/include/asm/hw_irq.h
16732+++ b/arch/x86/include/asm/hw_irq.h
16733@@ -164,8 +164,8 @@ extern void setup_ioapic_dest(void);
16734 extern void enable_IO_APIC(void);
16735
16736 /* Statistics */
16737-extern atomic_t irq_err_count;
16738-extern atomic_t irq_mis_count;
16739+extern atomic_unchecked_t irq_err_count;
16740+extern atomic_unchecked_t irq_mis_count;
16741
16742 /* EISA */
16743 extern void eisa_set_level_irq(unsigned int irq);
16744diff --git a/arch/x86/include/asm/i8259.h b/arch/x86/include/asm/i8259.h
16745index a203659..9889f1c 100644
16746--- a/arch/x86/include/asm/i8259.h
16747+++ b/arch/x86/include/asm/i8259.h
16748@@ -62,7 +62,7 @@ struct legacy_pic {
16749 void (*init)(int auto_eoi);
16750 int (*irq_pending)(unsigned int irq);
16751 void (*make_irq)(unsigned int irq);
16752-};
16753+} __do_const;
16754
16755 extern struct legacy_pic *legacy_pic;
16756 extern struct legacy_pic null_legacy_pic;
16757diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
16758index b8237d8..3e8864e 100644
16759--- a/arch/x86/include/asm/io.h
16760+++ b/arch/x86/include/asm/io.h
16761@@ -52,12 +52,12 @@ static inline void name(type val, volatile void __iomem *addr) \
16762 "m" (*(volatile type __force *)addr) barrier); }
16763
16764 build_mmio_read(readb, "b", unsigned char, "=q", :"memory")
16765-build_mmio_read(readw, "w", unsigned short, "=r", :"memory")
16766-build_mmio_read(readl, "l", unsigned int, "=r", :"memory")
16767+build_mmio_read(__intentional_overflow(-1) readw, "w", unsigned short, "=r", :"memory")
16768+build_mmio_read(__intentional_overflow(-1) readl, "l", unsigned int, "=r", :"memory")
16769
16770 build_mmio_read(__readb, "b", unsigned char, "=q", )
16771-build_mmio_read(__readw, "w", unsigned short, "=r", )
16772-build_mmio_read(__readl, "l", unsigned int, "=r", )
16773+build_mmio_read(__intentional_overflow(-1) __readw, "w", unsigned short, "=r", )
16774+build_mmio_read(__intentional_overflow(-1) __readl, "l", unsigned int, "=r", )
16775
16776 build_mmio_write(writeb, "b", unsigned char, "q", :"memory")
16777 build_mmio_write(writew, "w", unsigned short, "r", :"memory")
16778@@ -109,7 +109,7 @@ build_mmio_write(writeq, "q", unsigned long, "r", :"memory")
16779 * this function
16780 */
16781
16782-static inline phys_addr_t virt_to_phys(volatile void *address)
16783+static inline phys_addr_t __intentional_overflow(-1) virt_to_phys(volatile void *address)
16784 {
16785 return __pa(address);
16786 }
16787@@ -185,7 +185,7 @@ static inline void __iomem *ioremap(resource_size_t offset, unsigned long size)
16788 return ioremap_nocache(offset, size);
16789 }
16790
16791-extern void iounmap(volatile void __iomem *addr);
16792+extern void iounmap(const volatile void __iomem *addr);
16793
16794 extern void set_iounmap_nonlazy(void);
16795
16796@@ -195,6 +195,17 @@ extern void set_iounmap_nonlazy(void);
16797
16798 #include <linux/vmalloc.h>
16799
16800+#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
16801+static inline int valid_phys_addr_range(unsigned long addr, size_t count)
16802+{
16803+ return ((addr + count + PAGE_SIZE - 1) >> PAGE_SHIFT) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0;
16804+}
16805+
16806+static inline int valid_mmap_phys_addr_range(unsigned long pfn, size_t count)
16807+{
16808+ return (pfn + (count >> PAGE_SHIFT)) < (1ULL << (boot_cpu_data.x86_phys_bits - PAGE_SHIFT)) ? 1 : 0;
16809+}
16810+
16811 /*
16812 * Convert a virtual cached pointer to an uncached pointer
16813 */
16814diff --git a/arch/x86/include/asm/irqflags.h b/arch/x86/include/asm/irqflags.h
16815index bba3cf8..06bc8da 100644
16816--- a/arch/x86/include/asm/irqflags.h
16817+++ b/arch/x86/include/asm/irqflags.h
16818@@ -141,6 +141,11 @@ static inline notrace unsigned long arch_local_irq_save(void)
16819 sti; \
16820 sysexit
16821
16822+#define GET_CR0_INTO_RDI mov %cr0, %rdi
16823+#define SET_RDI_INTO_CR0 mov %rdi, %cr0
16824+#define GET_CR3_INTO_RDI mov %cr3, %rdi
16825+#define SET_RDI_INTO_CR3 mov %rdi, %cr3
16826+
16827 #else
16828 #define INTERRUPT_RETURN iret
16829 #define ENABLE_INTERRUPTS_SYSEXIT sti; sysexit
16830diff --git a/arch/x86/include/asm/kprobes.h b/arch/x86/include/asm/kprobes.h
16831index 9454c16..e4100e3 100644
16832--- a/arch/x86/include/asm/kprobes.h
16833+++ b/arch/x86/include/asm/kprobes.h
16834@@ -38,13 +38,8 @@ typedef u8 kprobe_opcode_t;
16835 #define RELATIVEJUMP_SIZE 5
16836 #define RELATIVECALL_OPCODE 0xe8
16837 #define RELATIVE_ADDR_SIZE 4
16838-#define MAX_STACK_SIZE 64
16839-#define MIN_STACK_SIZE(ADDR) \
16840- (((MAX_STACK_SIZE) < (((unsigned long)current_thread_info()) + \
16841- THREAD_SIZE - (unsigned long)(ADDR))) \
16842- ? (MAX_STACK_SIZE) \
16843- : (((unsigned long)current_thread_info()) + \
16844- THREAD_SIZE - (unsigned long)(ADDR)))
16845+#define MAX_STACK_SIZE 64UL
16846+#define MIN_STACK_SIZE(ADDR) min(MAX_STACK_SIZE, current->thread.sp0 - (unsigned long)(ADDR))
16847
16848 #define flush_insn_slot(p) do { } while (0)
16849
16850diff --git a/arch/x86/include/asm/local.h b/arch/x86/include/asm/local.h
16851index 4ad6560..75c7bdd 100644
16852--- a/arch/x86/include/asm/local.h
16853+++ b/arch/x86/include/asm/local.h
16854@@ -10,33 +10,97 @@ typedef struct {
16855 atomic_long_t a;
16856 } local_t;
16857
16858+typedef struct {
16859+ atomic_long_unchecked_t a;
16860+} local_unchecked_t;
16861+
16862 #define LOCAL_INIT(i) { ATOMIC_LONG_INIT(i) }
16863
16864 #define local_read(l) atomic_long_read(&(l)->a)
16865+#define local_read_unchecked(l) atomic_long_read_unchecked(&(l)->a)
16866 #define local_set(l, i) atomic_long_set(&(l)->a, (i))
16867+#define local_set_unchecked(l, i) atomic_long_set_unchecked(&(l)->a, (i))
16868
16869 static inline void local_inc(local_t *l)
16870 {
16871- asm volatile(_ASM_INC "%0"
16872+ asm volatile(_ASM_INC "%0\n"
16873+
16874+#ifdef CONFIG_PAX_REFCOUNT
16875+ "jno 0f\n"
16876+ _ASM_DEC "%0\n"
16877+ "int $4\n0:\n"
16878+ _ASM_EXTABLE(0b, 0b)
16879+#endif
16880+
16881+ : "+m" (l->a.counter));
16882+}
16883+
16884+static inline void local_inc_unchecked(local_unchecked_t *l)
16885+{
16886+ asm volatile(_ASM_INC "%0\n"
16887 : "+m" (l->a.counter));
16888 }
16889
16890 static inline void local_dec(local_t *l)
16891 {
16892- asm volatile(_ASM_DEC "%0"
16893+ asm volatile(_ASM_DEC "%0\n"
16894+
16895+#ifdef CONFIG_PAX_REFCOUNT
16896+ "jno 0f\n"
16897+ _ASM_INC "%0\n"
16898+ "int $4\n0:\n"
16899+ _ASM_EXTABLE(0b, 0b)
16900+#endif
16901+
16902+ : "+m" (l->a.counter));
16903+}
16904+
16905+static inline void local_dec_unchecked(local_unchecked_t *l)
16906+{
16907+ asm volatile(_ASM_DEC "%0\n"
16908 : "+m" (l->a.counter));
16909 }
16910
16911 static inline void local_add(long i, local_t *l)
16912 {
16913- asm volatile(_ASM_ADD "%1,%0"
16914+ asm volatile(_ASM_ADD "%1,%0\n"
16915+
16916+#ifdef CONFIG_PAX_REFCOUNT
16917+ "jno 0f\n"
16918+ _ASM_SUB "%1,%0\n"
16919+ "int $4\n0:\n"
16920+ _ASM_EXTABLE(0b, 0b)
16921+#endif
16922+
16923+ : "+m" (l->a.counter)
16924+ : "ir" (i));
16925+}
16926+
16927+static inline void local_add_unchecked(long i, local_unchecked_t *l)
16928+{
16929+ asm volatile(_ASM_ADD "%1,%0\n"
16930 : "+m" (l->a.counter)
16931 : "ir" (i));
16932 }
16933
16934 static inline void local_sub(long i, local_t *l)
16935 {
16936- asm volatile(_ASM_SUB "%1,%0"
16937+ asm volatile(_ASM_SUB "%1,%0\n"
16938+
16939+#ifdef CONFIG_PAX_REFCOUNT
16940+ "jno 0f\n"
16941+ _ASM_ADD "%1,%0\n"
16942+ "int $4\n0:\n"
16943+ _ASM_EXTABLE(0b, 0b)
16944+#endif
16945+
16946+ : "+m" (l->a.counter)
16947+ : "ir" (i));
16948+}
16949+
16950+static inline void local_sub_unchecked(long i, local_unchecked_t *l)
16951+{
16952+ asm volatile(_ASM_SUB "%1,%0\n"
16953 : "+m" (l->a.counter)
16954 : "ir" (i));
16955 }
16956@@ -52,7 +116,7 @@ static inline void local_sub(long i, local_t *l)
16957 */
16958 static inline int local_sub_and_test(long i, local_t *l)
16959 {
16960- GEN_BINARY_RMWcc(_ASM_SUB, l->a.counter, "er", i, "%0", "e");
16961+ GEN_BINARY_RMWcc(_ASM_SUB, _ASM_ADD, l->a.counter, "er", i, "%0", "e");
16962 }
16963
16964 /**
16965@@ -65,7 +129,7 @@ static inline int local_sub_and_test(long i, local_t *l)
16966 */
16967 static inline int local_dec_and_test(local_t *l)
16968 {
16969- GEN_UNARY_RMWcc(_ASM_DEC, l->a.counter, "%0", "e");
16970+ GEN_UNARY_RMWcc(_ASM_DEC, _ASM_INC, l->a.counter, "%0", "e");
16971 }
16972
16973 /**
16974@@ -78,7 +142,7 @@ static inline int local_dec_and_test(local_t *l)
16975 */
16976 static inline int local_inc_and_test(local_t *l)
16977 {
16978- GEN_UNARY_RMWcc(_ASM_INC, l->a.counter, "%0", "e");
16979+ GEN_UNARY_RMWcc(_ASM_INC, _ASM_DEC, l->a.counter, "%0", "e");
16980 }
16981
16982 /**
16983@@ -92,7 +156,7 @@ static inline int local_inc_and_test(local_t *l)
16984 */
16985 static inline int local_add_negative(long i, local_t *l)
16986 {
16987- GEN_BINARY_RMWcc(_ASM_ADD, l->a.counter, "er", i, "%0", "s");
16988+ GEN_BINARY_RMWcc(_ASM_ADD, _ASM_SUB, l->a.counter, "er", i, "%0", "s");
16989 }
16990
16991 /**
16992@@ -105,6 +169,30 @@ static inline int local_add_negative(long i, local_t *l)
16993 static inline long local_add_return(long i, local_t *l)
16994 {
16995 long __i = i;
16996+ asm volatile(_ASM_XADD "%0, %1\n"
16997+
16998+#ifdef CONFIG_PAX_REFCOUNT
16999+ "jno 0f\n"
17000+ _ASM_MOV "%0,%1\n"
17001+ "int $4\n0:\n"
17002+ _ASM_EXTABLE(0b, 0b)
17003+#endif
17004+
17005+ : "+r" (i), "+m" (l->a.counter)
17006+ : : "memory");
17007+ return i + __i;
17008+}
17009+
17010+/**
17011+ * local_add_return_unchecked - add and return
17012+ * @i: integer value to add
17013+ * @l: pointer to type local_unchecked_t
17014+ *
17015+ * Atomically adds @i to @l and returns @i + @l
17016+ */
17017+static inline long local_add_return_unchecked(long i, local_unchecked_t *l)
17018+{
17019+ long __i = i;
17020 asm volatile(_ASM_XADD "%0, %1;"
17021 : "+r" (i), "+m" (l->a.counter)
17022 : : "memory");
17023@@ -121,6 +209,8 @@ static inline long local_sub_return(long i, local_t *l)
17024
17025 #define local_cmpxchg(l, o, n) \
17026 (cmpxchg_local(&((l)->a.counter), (o), (n)))
17027+#define local_cmpxchg_unchecked(l, o, n) \
17028+ (cmpxchg_local(&((l)->a.counter), (o), (n)))
17029 /* Always has a lock prefix */
17030 #define local_xchg(l, n) (xchg(&((l)->a.counter), (n)))
17031
17032diff --git a/arch/x86/include/asm/mman.h b/arch/x86/include/asm/mman.h
17033new file mode 100644
17034index 0000000..2bfd3ba
17035--- /dev/null
17036+++ b/arch/x86/include/asm/mman.h
17037@@ -0,0 +1,15 @@
17038+#ifndef _X86_MMAN_H
17039+#define _X86_MMAN_H
17040+
17041+#include <uapi/asm/mman.h>
17042+
17043+#ifdef __KERNEL__
17044+#ifndef __ASSEMBLY__
17045+#ifdef CONFIG_X86_32
17046+#define arch_mmap_check i386_mmap_check
17047+int i386_mmap_check(unsigned long addr, unsigned long len, unsigned long flags);
17048+#endif
17049+#endif
17050+#endif
17051+
17052+#endif /* X86_MMAN_H */
17053diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h
17054index 5f55e69..e20bfb1 100644
17055--- a/arch/x86/include/asm/mmu.h
17056+++ b/arch/x86/include/asm/mmu.h
17057@@ -9,7 +9,7 @@
17058 * we put the segment information here.
17059 */
17060 typedef struct {
17061- void *ldt;
17062+ struct desc_struct *ldt;
17063 int size;
17064
17065 #ifdef CONFIG_X86_64
17066@@ -18,7 +18,19 @@ typedef struct {
17067 #endif
17068
17069 struct mutex lock;
17070- void *vdso;
17071+ unsigned long vdso;
17072+
17073+#ifdef CONFIG_X86_32
17074+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
17075+ unsigned long user_cs_base;
17076+ unsigned long user_cs_limit;
17077+
17078+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP)
17079+ cpumask_t cpu_user_cs_mask;
17080+#endif
17081+
17082+#endif
17083+#endif
17084 } mm_context_t;
17085
17086 #ifdef CONFIG_SMP
17087diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
17088index be12c53..4d24039 100644
17089--- a/arch/x86/include/asm/mmu_context.h
17090+++ b/arch/x86/include/asm/mmu_context.h
17091@@ -24,6 +24,20 @@ void destroy_context(struct mm_struct *mm);
17092
17093 static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk)
17094 {
17095+
17096+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
17097+ if (!(static_cpu_has(X86_FEATURE_PCID))) {
17098+ unsigned int i;
17099+ pgd_t *pgd;
17100+
17101+ pax_open_kernel();
17102+ pgd = get_cpu_pgd(smp_processor_id(), kernel);
17103+ for (i = USER_PGD_PTRS; i < 2 * USER_PGD_PTRS; ++i)
17104+ set_pgd_batched(pgd+i, native_make_pgd(0));
17105+ pax_close_kernel();
17106+ }
17107+#endif
17108+
17109 #ifdef CONFIG_SMP
17110 if (this_cpu_read(cpu_tlbstate.state) == TLBSTATE_OK)
17111 this_cpu_write(cpu_tlbstate.state, TLBSTATE_LAZY);
17112@@ -34,16 +48,59 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
17113 struct task_struct *tsk)
17114 {
17115 unsigned cpu = smp_processor_id();
17116+#if defined(CONFIG_X86_32) && defined(CONFIG_SMP) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC))
17117+ int tlbstate = TLBSTATE_OK;
17118+#endif
17119
17120 if (likely(prev != next)) {
17121 #ifdef CONFIG_SMP
17122+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC))
17123+ tlbstate = this_cpu_read(cpu_tlbstate.state);
17124+#endif
17125 this_cpu_write(cpu_tlbstate.state, TLBSTATE_OK);
17126 this_cpu_write(cpu_tlbstate.active_mm, next);
17127 #endif
17128 cpumask_set_cpu(cpu, mm_cpumask(next));
17129
17130 /* Re-load page tables */
17131+#ifdef CONFIG_PAX_PER_CPU_PGD
17132+ pax_open_kernel();
17133+
17134+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
17135+ if (static_cpu_has(X86_FEATURE_PCID))
17136+ __clone_user_pgds(get_cpu_pgd(cpu, user), next->pgd);
17137+ else
17138+#endif
17139+
17140+ __clone_user_pgds(get_cpu_pgd(cpu, kernel), next->pgd);
17141+ __shadow_user_pgds(get_cpu_pgd(cpu, kernel) + USER_PGD_PTRS, next->pgd);
17142+ pax_close_kernel();
17143+ BUG_ON((__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL) != (read_cr3() & __PHYSICAL_MASK) && (__pa(get_cpu_pgd(cpu, user)) | PCID_USER) != (read_cr3() & __PHYSICAL_MASK));
17144+
17145+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
17146+ if (static_cpu_has(X86_FEATURE_PCID)) {
17147+ if (static_cpu_has(X86_FEATURE_INVPCID)) {
17148+ u64 descriptor[2];
17149+ descriptor[0] = PCID_USER;
17150+ asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_SINGLE_CONTEXT) : "memory");
17151+ if (!static_cpu_has(X86_FEATURE_STRONGUDEREF)) {
17152+ descriptor[0] = PCID_KERNEL;
17153+ asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_SINGLE_CONTEXT) : "memory");
17154+ }
17155+ } else {
17156+ write_cr3(__pa(get_cpu_pgd(cpu, user)) | PCID_USER);
17157+ if (static_cpu_has(X86_FEATURE_STRONGUDEREF))
17158+ write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL | PCID_NOFLUSH);
17159+ else
17160+ write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL);
17161+ }
17162+ } else
17163+#endif
17164+
17165+ load_cr3(get_cpu_pgd(cpu, kernel));
17166+#else
17167 load_cr3(next->pgd);
17168+#endif
17169
17170 /* Stop flush ipis for the previous mm */
17171 cpumask_clear_cpu(cpu, mm_cpumask(prev));
17172@@ -51,9 +108,67 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
17173 /* Load the LDT, if the LDT is different: */
17174 if (unlikely(prev->context.ldt != next->context.ldt))
17175 load_LDT_nolock(&next->context);
17176+
17177+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP)
17178+ if (!(__supported_pte_mask & _PAGE_NX)) {
17179+ smp_mb__before_clear_bit();
17180+ cpu_clear(cpu, prev->context.cpu_user_cs_mask);
17181+ smp_mb__after_clear_bit();
17182+ cpu_set(cpu, next->context.cpu_user_cs_mask);
17183+ }
17184+#endif
17185+
17186+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC))
17187+ if (unlikely(prev->context.user_cs_base != next->context.user_cs_base ||
17188+ prev->context.user_cs_limit != next->context.user_cs_limit))
17189+ set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu);
17190+#ifdef CONFIG_SMP
17191+ else if (unlikely(tlbstate != TLBSTATE_OK))
17192+ set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu);
17193+#endif
17194+#endif
17195+
17196 }
17197+ else {
17198+
17199+#ifdef CONFIG_PAX_PER_CPU_PGD
17200+ pax_open_kernel();
17201+
17202+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
17203+ if (static_cpu_has(X86_FEATURE_PCID))
17204+ __clone_user_pgds(get_cpu_pgd(cpu, user), next->pgd);
17205+ else
17206+#endif
17207+
17208+ __clone_user_pgds(get_cpu_pgd(cpu, kernel), next->pgd);
17209+ __shadow_user_pgds(get_cpu_pgd(cpu, kernel) + USER_PGD_PTRS, next->pgd);
17210+ pax_close_kernel();
17211+ BUG_ON((__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL) != (read_cr3() & __PHYSICAL_MASK) && (__pa(get_cpu_pgd(cpu, user)) | PCID_USER) != (read_cr3() & __PHYSICAL_MASK));
17212+
17213+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
17214+ if (static_cpu_has(X86_FEATURE_PCID)) {
17215+ if (static_cpu_has(X86_FEATURE_INVPCID)) {
17216+ u64 descriptor[2];
17217+ descriptor[0] = PCID_USER;
17218+ asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_SINGLE_CONTEXT) : "memory");
17219+ if (!static_cpu_has(X86_FEATURE_STRONGUDEREF)) {
17220+ descriptor[0] = PCID_KERNEL;
17221+ asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_SINGLE_CONTEXT) : "memory");
17222+ }
17223+ } else {
17224+ write_cr3(__pa(get_cpu_pgd(cpu, user)) | PCID_USER);
17225+ if (static_cpu_has(X86_FEATURE_STRONGUDEREF))
17226+ write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL | PCID_NOFLUSH);
17227+ else
17228+ write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL);
17229+ }
17230+ } else
17231+#endif
17232+
17233+ load_cr3(get_cpu_pgd(cpu, kernel));
17234+#endif
17235+
17236 #ifdef CONFIG_SMP
17237- else {
17238 this_cpu_write(cpu_tlbstate.state, TLBSTATE_OK);
17239 BUG_ON(this_cpu_read(cpu_tlbstate.active_mm) != next);
17240
17241@@ -70,11 +185,28 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next,
17242 * tlb flush IPI delivery. We must reload CR3
17243 * to make sure to use no freed page tables.
17244 */
17245+
17246+#ifndef CONFIG_PAX_PER_CPU_PGD
17247 load_cr3(next->pgd);
17248+#endif
17249+
17250 load_LDT_nolock(&next->context);
17251+
17252+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC)
17253+ if (!(__supported_pte_mask & _PAGE_NX))
17254+ cpu_set(cpu, next->context.cpu_user_cs_mask);
17255+#endif
17256+
17257+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC))
17258+#ifdef CONFIG_PAX_PAGEEXEC
17259+ if (!((next->pax_flags & MF_PAX_PAGEEXEC) && (__supported_pte_mask & _PAGE_NX)))
17260+#endif
17261+ set_user_cs(next->context.user_cs_base, next->context.user_cs_limit, cpu);
17262+#endif
17263+
17264 }
17265+#endif
17266 }
17267-#endif
17268 }
17269
17270 #define activate_mm(prev, next) \
17271diff --git a/arch/x86/include/asm/module.h b/arch/x86/include/asm/module.h
17272index e3b7819..b257c64 100644
17273--- a/arch/x86/include/asm/module.h
17274+++ b/arch/x86/include/asm/module.h
17275@@ -5,6 +5,7 @@
17276
17277 #ifdef CONFIG_X86_64
17278 /* X86_64 does not define MODULE_PROC_FAMILY */
17279+#define MODULE_PROC_FAMILY ""
17280 #elif defined CONFIG_M486
17281 #define MODULE_PROC_FAMILY "486 "
17282 #elif defined CONFIG_M586
17283@@ -57,8 +58,20 @@
17284 #error unknown processor family
17285 #endif
17286
17287-#ifdef CONFIG_X86_32
17288-# define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY
17289+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_BTS
17290+#define MODULE_PAX_KERNEXEC "KERNEXEC_BTS "
17291+#elif defined(CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR)
17292+#define MODULE_PAX_KERNEXEC "KERNEXEC_OR "
17293+#else
17294+#define MODULE_PAX_KERNEXEC ""
17295 #endif
17296
17297+#ifdef CONFIG_PAX_MEMORY_UDEREF
17298+#define MODULE_PAX_UDEREF "UDEREF "
17299+#else
17300+#define MODULE_PAX_UDEREF ""
17301+#endif
17302+
17303+#define MODULE_ARCH_VERMAGIC MODULE_PROC_FAMILY MODULE_PAX_KERNEXEC MODULE_PAX_UDEREF
17304+
17305 #endif /* _ASM_X86_MODULE_H */
17306diff --git a/arch/x86/include/asm/nmi.h b/arch/x86/include/asm/nmi.h
17307index 5f2fc44..106caa6 100644
17308--- a/arch/x86/include/asm/nmi.h
17309+++ b/arch/x86/include/asm/nmi.h
17310@@ -36,26 +36,35 @@ enum {
17311
17312 typedef int (*nmi_handler_t)(unsigned int, struct pt_regs *);
17313
17314+struct nmiaction;
17315+
17316+struct nmiwork {
17317+ const struct nmiaction *action;
17318+ u64 max_duration;
17319+ struct irq_work irq_work;
17320+};
17321+
17322 struct nmiaction {
17323 struct list_head list;
17324 nmi_handler_t handler;
17325- u64 max_duration;
17326- struct irq_work irq_work;
17327 unsigned long flags;
17328 const char *name;
17329-};
17330+ struct nmiwork *work;
17331+} __do_const;
17332
17333 #define register_nmi_handler(t, fn, fg, n, init...) \
17334 ({ \
17335- static struct nmiaction init fn##_na = { \
17336+ static struct nmiwork fn##_nw; \
17337+ static const struct nmiaction init fn##_na = { \
17338 .handler = (fn), \
17339 .name = (n), \
17340 .flags = (fg), \
17341+ .work = &fn##_nw, \
17342 }; \
17343 __register_nmi_handler((t), &fn##_na); \
17344 })
17345
17346-int __register_nmi_handler(unsigned int, struct nmiaction *);
17347+int __register_nmi_handler(unsigned int, const struct nmiaction *);
17348
17349 void unregister_nmi_handler(unsigned int, const char *);
17350
17351diff --git a/arch/x86/include/asm/page.h b/arch/x86/include/asm/page.h
17352index 775873d..04cd306 100644
17353--- a/arch/x86/include/asm/page.h
17354+++ b/arch/x86/include/asm/page.h
17355@@ -52,6 +52,7 @@ static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
17356 __phys_addr_symbol(__phys_reloc_hide((unsigned long)(x)))
17357
17358 #define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
17359+#define __early_va(x) ((void *)((unsigned long)(x)+__START_KERNEL_map - phys_base))
17360
17361 #define __boot_va(x) __va(x)
17362 #define __boot_pa(x) __pa(x)
17363@@ -60,11 +61,21 @@ static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
17364 * virt_to_page(kaddr) returns a valid pointer if and only if
17365 * virt_addr_valid(kaddr) returns true.
17366 */
17367-#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
17368 #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
17369 extern bool __virt_addr_valid(unsigned long kaddr);
17370 #define virt_addr_valid(kaddr) __virt_addr_valid((unsigned long) (kaddr))
17371
17372+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
17373+#define virt_to_page(kaddr) \
17374+ ({ \
17375+ const void *__kaddr = (const void *)(kaddr); \
17376+ BUG_ON(!virt_addr_valid(__kaddr)); \
17377+ pfn_to_page(__pa(__kaddr) >> PAGE_SHIFT); \
17378+ })
17379+#else
17380+#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
17381+#endif
17382+
17383 #endif /* __ASSEMBLY__ */
17384
17385 #include <asm-generic/memory_model.h>
17386diff --git a/arch/x86/include/asm/page_64.h b/arch/x86/include/asm/page_64.h
17387index 0f1ddee..e2fc3d1 100644
17388--- a/arch/x86/include/asm/page_64.h
17389+++ b/arch/x86/include/asm/page_64.h
17390@@ -7,9 +7,9 @@
17391
17392 /* duplicated to the one in bootmem.h */
17393 extern unsigned long max_pfn;
17394-extern unsigned long phys_base;
17395+extern const unsigned long phys_base;
17396
17397-static inline unsigned long __phys_addr_nodebug(unsigned long x)
17398+static inline unsigned long __intentional_overflow(-1) __phys_addr_nodebug(unsigned long x)
17399 {
17400 unsigned long y = x - __START_KERNEL_map;
17401
17402diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
17403index cd6e1610..70f4418 100644
17404--- a/arch/x86/include/asm/paravirt.h
17405+++ b/arch/x86/include/asm/paravirt.h
17406@@ -560,7 +560,7 @@ static inline pmd_t __pmd(pmdval_t val)
17407 return (pmd_t) { ret };
17408 }
17409
17410-static inline pmdval_t pmd_val(pmd_t pmd)
17411+static inline __intentional_overflow(-1) pmdval_t pmd_val(pmd_t pmd)
17412 {
17413 pmdval_t ret;
17414
17415@@ -626,6 +626,18 @@ static inline void set_pgd(pgd_t *pgdp, pgd_t pgd)
17416 val);
17417 }
17418
17419+static inline void set_pgd_batched(pgd_t *pgdp, pgd_t pgd)
17420+{
17421+ pgdval_t val = native_pgd_val(pgd);
17422+
17423+ if (sizeof(pgdval_t) > sizeof(long))
17424+ PVOP_VCALL3(pv_mmu_ops.set_pgd_batched, pgdp,
17425+ val, (u64)val >> 32);
17426+ else
17427+ PVOP_VCALL2(pv_mmu_ops.set_pgd_batched, pgdp,
17428+ val);
17429+}
17430+
17431 static inline void pgd_clear(pgd_t *pgdp)
17432 {
17433 set_pgd(pgdp, __pgd(0));
17434@@ -710,6 +722,21 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
17435 pv_mmu_ops.set_fixmap(idx, phys, flags);
17436 }
17437
17438+#ifdef CONFIG_PAX_KERNEXEC
17439+static inline unsigned long pax_open_kernel(void)
17440+{
17441+ return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_open_kernel);
17442+}
17443+
17444+static inline unsigned long pax_close_kernel(void)
17445+{
17446+ return PVOP_CALL0(unsigned long, pv_mmu_ops.pax_close_kernel);
17447+}
17448+#else
17449+static inline unsigned long pax_open_kernel(void) { return 0; }
17450+static inline unsigned long pax_close_kernel(void) { return 0; }
17451+#endif
17452+
17453 #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS)
17454
17455 static __always_inline void __ticket_lock_spinning(struct arch_spinlock *lock,
17456@@ -906,7 +933,7 @@ extern void default_banner(void);
17457
17458 #define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 4)
17459 #define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .long, 4)
17460-#define PARA_INDIRECT(addr) *%cs:addr
17461+#define PARA_INDIRECT(addr) *%ss:addr
17462 #endif
17463
17464 #define INTERRUPT_RETURN \
17465@@ -981,6 +1008,21 @@ extern void default_banner(void);
17466 PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit), \
17467 CLBR_NONE, \
17468 jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit))
17469+
17470+#define GET_CR0_INTO_RDI \
17471+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); \
17472+ mov %rax,%rdi
17473+
17474+#define SET_RDI_INTO_CR0 \
17475+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0)
17476+
17477+#define GET_CR3_INTO_RDI \
17478+ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr3); \
17479+ mov %rax,%rdi
17480+
17481+#define SET_RDI_INTO_CR3 \
17482+ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_write_cr3)
17483+
17484 #endif /* CONFIG_X86_32 */
17485
17486 #endif /* __ASSEMBLY__ */
17487diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h
17488index 7549b8b..f0edfda 100644
17489--- a/arch/x86/include/asm/paravirt_types.h
17490+++ b/arch/x86/include/asm/paravirt_types.h
17491@@ -84,7 +84,7 @@ struct pv_init_ops {
17492 */
17493 unsigned (*patch)(u8 type, u16 clobber, void *insnbuf,
17494 unsigned long addr, unsigned len);
17495-};
17496+} __no_const __no_randomize_layout;
17497
17498
17499 struct pv_lazy_ops {
17500@@ -92,13 +92,13 @@ struct pv_lazy_ops {
17501 void (*enter)(void);
17502 void (*leave)(void);
17503 void (*flush)(void);
17504-};
17505+} __no_randomize_layout;
17506
17507 struct pv_time_ops {
17508 unsigned long long (*sched_clock)(void);
17509 unsigned long long (*steal_clock)(int cpu);
17510 unsigned long (*get_tsc_khz)(void);
17511-};
17512+} __no_const __no_randomize_layout;
17513
17514 struct pv_cpu_ops {
17515 /* hooks for various privileged instructions */
17516@@ -192,7 +192,7 @@ struct pv_cpu_ops {
17517
17518 void (*start_context_switch)(struct task_struct *prev);
17519 void (*end_context_switch)(struct task_struct *next);
17520-};
17521+} __no_const __no_randomize_layout;
17522
17523 struct pv_irq_ops {
17524 /*
17525@@ -215,7 +215,7 @@ struct pv_irq_ops {
17526 #ifdef CONFIG_X86_64
17527 void (*adjust_exception_frame)(void);
17528 #endif
17529-};
17530+} __no_randomize_layout;
17531
17532 struct pv_apic_ops {
17533 #ifdef CONFIG_X86_LOCAL_APIC
17534@@ -223,7 +223,7 @@ struct pv_apic_ops {
17535 unsigned long start_eip,
17536 unsigned long start_esp);
17537 #endif
17538-};
17539+} __no_const __no_randomize_layout;
17540
17541 struct pv_mmu_ops {
17542 unsigned long (*read_cr2)(void);
17543@@ -313,6 +313,7 @@ struct pv_mmu_ops {
17544 struct paravirt_callee_save make_pud;
17545
17546 void (*set_pgd)(pgd_t *pudp, pgd_t pgdval);
17547+ void (*set_pgd_batched)(pgd_t *pudp, pgd_t pgdval);
17548 #endif /* PAGETABLE_LEVELS == 4 */
17549 #endif /* PAGETABLE_LEVELS >= 3 */
17550
17551@@ -324,7 +325,13 @@ struct pv_mmu_ops {
17552 an mfn. We can tell which is which from the index. */
17553 void (*set_fixmap)(unsigned /* enum fixed_addresses */ idx,
17554 phys_addr_t phys, pgprot_t flags);
17555-};
17556+
17557+#ifdef CONFIG_PAX_KERNEXEC
17558+ unsigned long (*pax_open_kernel)(void);
17559+ unsigned long (*pax_close_kernel)(void);
17560+#endif
17561+
17562+} __no_randomize_layout;
17563
17564 struct arch_spinlock;
17565 #ifdef CONFIG_SMP
17566@@ -336,11 +343,14 @@ typedef u16 __ticket_t;
17567 struct pv_lock_ops {
17568 struct paravirt_callee_save lock_spinning;
17569 void (*unlock_kick)(struct arch_spinlock *lock, __ticket_t ticket);
17570-};
17571+} __no_randomize_layout;
17572
17573 /* This contains all the paravirt structures: we get a convenient
17574 * number for each function using the offset which we use to indicate
17575- * what to patch. */
17576+ * what to patch.
17577+ * shouldn't be randomized due to the "NEAT TRICK" in paravirt.c
17578+ */
17579+
17580 struct paravirt_patch_template {
17581 struct pv_init_ops pv_init_ops;
17582 struct pv_time_ops pv_time_ops;
17583@@ -349,7 +359,7 @@ struct paravirt_patch_template {
17584 struct pv_apic_ops pv_apic_ops;
17585 struct pv_mmu_ops pv_mmu_ops;
17586 struct pv_lock_ops pv_lock_ops;
17587-};
17588+} __no_randomize_layout;
17589
17590 extern struct pv_info pv_info;
17591 extern struct pv_init_ops pv_init_ops;
17592diff --git a/arch/x86/include/asm/pgalloc.h b/arch/x86/include/asm/pgalloc.h
17593index c4412e9..90e88c5 100644
17594--- a/arch/x86/include/asm/pgalloc.h
17595+++ b/arch/x86/include/asm/pgalloc.h
17596@@ -63,6 +63,13 @@ static inline void pmd_populate_kernel(struct mm_struct *mm,
17597 pmd_t *pmd, pte_t *pte)
17598 {
17599 paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT);
17600+ set_pmd(pmd, __pmd(__pa(pte) | _KERNPG_TABLE));
17601+}
17602+
17603+static inline void pmd_populate_user(struct mm_struct *mm,
17604+ pmd_t *pmd, pte_t *pte)
17605+{
17606+ paravirt_alloc_pte(mm, __pa(pte) >> PAGE_SHIFT);
17607 set_pmd(pmd, __pmd(__pa(pte) | _PAGE_TABLE));
17608 }
17609
17610@@ -108,12 +115,22 @@ static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
17611
17612 #ifdef CONFIG_X86_PAE
17613 extern void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd);
17614+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd)
17615+{
17616+ pud_populate(mm, pudp, pmd);
17617+}
17618 #else /* !CONFIG_X86_PAE */
17619 static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
17620 {
17621 paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT);
17622 set_pud(pud, __pud(_PAGE_TABLE | __pa(pmd)));
17623 }
17624+
17625+static inline void pud_populate_kernel(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
17626+{
17627+ paravirt_alloc_pmd(mm, __pa(pmd) >> PAGE_SHIFT);
17628+ set_pud(pud, __pud(_KERNPG_TABLE | __pa(pmd)));
17629+}
17630 #endif /* CONFIG_X86_PAE */
17631
17632 #if PAGETABLE_LEVELS > 3
17633@@ -123,6 +140,12 @@ static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
17634 set_pgd(pgd, __pgd(_PAGE_TABLE | __pa(pud)));
17635 }
17636
17637+static inline void pgd_populate_kernel(struct mm_struct *mm, pgd_t *pgd, pud_t *pud)
17638+{
17639+ paravirt_alloc_pud(mm, __pa(pud) >> PAGE_SHIFT);
17640+ set_pgd(pgd, __pgd(_KERNPG_TABLE | __pa(pud)));
17641+}
17642+
17643 static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long addr)
17644 {
17645 return (pud_t *)get_zeroed_page(GFP_KERNEL|__GFP_REPEAT);
17646diff --git a/arch/x86/include/asm/pgtable-2level.h b/arch/x86/include/asm/pgtable-2level.h
17647index 0d193e2..bf59aeb 100644
17648--- a/arch/x86/include/asm/pgtable-2level.h
17649+++ b/arch/x86/include/asm/pgtable-2level.h
17650@@ -18,7 +18,9 @@ static inline void native_set_pte(pte_t *ptep , pte_t pte)
17651
17652 static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
17653 {
17654+ pax_open_kernel();
17655 *pmdp = pmd;
17656+ pax_close_kernel();
17657 }
17658
17659 static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte)
17660diff --git a/arch/x86/include/asm/pgtable-3level.h b/arch/x86/include/asm/pgtable-3level.h
17661index 81bb91b..9392125 100644
17662--- a/arch/x86/include/asm/pgtable-3level.h
17663+++ b/arch/x86/include/asm/pgtable-3level.h
17664@@ -92,12 +92,16 @@ static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte)
17665
17666 static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
17667 {
17668+ pax_open_kernel();
17669 set_64bit((unsigned long long *)(pmdp), native_pmd_val(pmd));
17670+ pax_close_kernel();
17671 }
17672
17673 static inline void native_set_pud(pud_t *pudp, pud_t pud)
17674 {
17675+ pax_open_kernel();
17676 set_64bit((unsigned long long *)(pudp), native_pud_val(pud));
17677+ pax_close_kernel();
17678 }
17679
17680 /*
17681diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
17682index b459ddf..b44081b 100644
17683--- a/arch/x86/include/asm/pgtable.h
17684+++ b/arch/x86/include/asm/pgtable.h
17685@@ -46,6 +46,7 @@ extern struct mm_struct *pgd_page_get_mm(struct page *page);
17686
17687 #ifndef __PAGETABLE_PUD_FOLDED
17688 #define set_pgd(pgdp, pgd) native_set_pgd(pgdp, pgd)
17689+#define set_pgd_batched(pgdp, pgd) native_set_pgd_batched(pgdp, pgd)
17690 #define pgd_clear(pgd) native_pgd_clear(pgd)
17691 #endif
17692
17693@@ -83,12 +84,51 @@ extern struct mm_struct *pgd_page_get_mm(struct page *page);
17694
17695 #define arch_end_context_switch(prev) do {} while(0)
17696
17697+#define pax_open_kernel() native_pax_open_kernel()
17698+#define pax_close_kernel() native_pax_close_kernel()
17699 #endif /* CONFIG_PARAVIRT */
17700
17701+#define __HAVE_ARCH_PAX_OPEN_KERNEL
17702+#define __HAVE_ARCH_PAX_CLOSE_KERNEL
17703+
17704+#ifdef CONFIG_PAX_KERNEXEC
17705+static inline unsigned long native_pax_open_kernel(void)
17706+{
17707+ unsigned long cr0;
17708+
17709+ preempt_disable();
17710+ barrier();
17711+ cr0 = read_cr0() ^ X86_CR0_WP;
17712+ BUG_ON(cr0 & X86_CR0_WP);
17713+ write_cr0(cr0);
17714+ return cr0 ^ X86_CR0_WP;
17715+}
17716+
17717+static inline unsigned long native_pax_close_kernel(void)
17718+{
17719+ unsigned long cr0;
17720+
17721+ cr0 = read_cr0() ^ X86_CR0_WP;
17722+ BUG_ON(!(cr0 & X86_CR0_WP));
17723+ write_cr0(cr0);
17724+ barrier();
17725+ preempt_enable_no_resched();
17726+ return cr0 ^ X86_CR0_WP;
17727+}
17728+#else
17729+static inline unsigned long native_pax_open_kernel(void) { return 0; }
17730+static inline unsigned long native_pax_close_kernel(void) { return 0; }
17731+#endif
17732+
17733 /*
17734 * The following only work if pte_present() is true.
17735 * Undefined behaviour if not..
17736 */
17737+static inline int pte_user(pte_t pte)
17738+{
17739+ return pte_val(pte) & _PAGE_USER;
17740+}
17741+
17742 static inline int pte_dirty(pte_t pte)
17743 {
17744 return pte_flags(pte) & _PAGE_DIRTY;
17745@@ -149,6 +189,11 @@ static inline unsigned long pud_pfn(pud_t pud)
17746 return (pud_val(pud) & PTE_PFN_MASK) >> PAGE_SHIFT;
17747 }
17748
17749+static inline unsigned long pgd_pfn(pgd_t pgd)
17750+{
17751+ return (pgd_val(pgd) & PTE_PFN_MASK) >> PAGE_SHIFT;
17752+}
17753+
17754 #define pte_page(pte) pfn_to_page(pte_pfn(pte))
17755
17756 static inline int pmd_large(pmd_t pte)
17757@@ -202,9 +247,29 @@ static inline pte_t pte_wrprotect(pte_t pte)
17758 return pte_clear_flags(pte, _PAGE_RW);
17759 }
17760
17761+static inline pte_t pte_mkread(pte_t pte)
17762+{
17763+ return __pte(pte_val(pte) | _PAGE_USER);
17764+}
17765+
17766 static inline pte_t pte_mkexec(pte_t pte)
17767 {
17768- return pte_clear_flags(pte, _PAGE_NX);
17769+#ifdef CONFIG_X86_PAE
17770+ if (__supported_pte_mask & _PAGE_NX)
17771+ return pte_clear_flags(pte, _PAGE_NX);
17772+ else
17773+#endif
17774+ return pte_set_flags(pte, _PAGE_USER);
17775+}
17776+
17777+static inline pte_t pte_exprotect(pte_t pte)
17778+{
17779+#ifdef CONFIG_X86_PAE
17780+ if (__supported_pte_mask & _PAGE_NX)
17781+ return pte_set_flags(pte, _PAGE_NX);
17782+ else
17783+#endif
17784+ return pte_clear_flags(pte, _PAGE_USER);
17785 }
17786
17787 static inline pte_t pte_mkdirty(pte_t pte)
17788@@ -431,6 +496,16 @@ pte_t *populate_extra_pte(unsigned long vaddr);
17789 #endif
17790
17791 #ifndef __ASSEMBLY__
17792+
17793+#ifdef CONFIG_PAX_PER_CPU_PGD
17794+extern pgd_t cpu_pgd[NR_CPUS][2][PTRS_PER_PGD];
17795+enum cpu_pgd_type {kernel = 0, user = 1};
17796+static inline pgd_t *get_cpu_pgd(unsigned int cpu, enum cpu_pgd_type type)
17797+{
17798+ return cpu_pgd[cpu][type];
17799+}
17800+#endif
17801+
17802 #include <linux/mm_types.h>
17803 #include <linux/mmdebug.h>
17804 #include <linux/log2.h>
17805@@ -571,7 +646,7 @@ static inline unsigned long pud_page_vaddr(pud_t pud)
17806 * Currently stuck as a macro due to indirect forward reference to
17807 * linux/mmzone.h's __section_mem_map_addr() definition:
17808 */
17809-#define pud_page(pud) pfn_to_page(pud_val(pud) >> PAGE_SHIFT)
17810+#define pud_page(pud) pfn_to_page((pud_val(pud) & PTE_PFN_MASK) >> PAGE_SHIFT)
17811
17812 /* Find an entry in the second-level page table.. */
17813 static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
17814@@ -611,7 +686,7 @@ static inline unsigned long pgd_page_vaddr(pgd_t pgd)
17815 * Currently stuck as a macro due to indirect forward reference to
17816 * linux/mmzone.h's __section_mem_map_addr() definition:
17817 */
17818-#define pgd_page(pgd) pfn_to_page(pgd_val(pgd) >> PAGE_SHIFT)
17819+#define pgd_page(pgd) pfn_to_page((pgd_val(pgd) & PTE_PFN_MASK) >> PAGE_SHIFT)
17820
17821 /* to find an entry in a page-table-directory. */
17822 static inline unsigned long pud_index(unsigned long address)
17823@@ -626,7 +701,7 @@ static inline pud_t *pud_offset(pgd_t *pgd, unsigned long address)
17824
17825 static inline int pgd_bad(pgd_t pgd)
17826 {
17827- return (pgd_flags(pgd) & ~_PAGE_USER) != _KERNPG_TABLE;
17828+ return (pgd_flags(pgd) & ~(_PAGE_USER | _PAGE_NX)) != _KERNPG_TABLE;
17829 }
17830
17831 static inline int pgd_none(pgd_t pgd)
17832@@ -649,7 +724,12 @@ static inline int pgd_none(pgd_t pgd)
17833 * pgd_offset() returns a (pgd_t *)
17834 * pgd_index() is used get the offset into the pgd page's array of pgd_t's;
17835 */
17836-#define pgd_offset(mm, address) ((mm)->pgd + pgd_index((address)))
17837+#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
17838+
17839+#ifdef CONFIG_PAX_PER_CPU_PGD
17840+#define pgd_offset_cpu(cpu, type, address) (get_cpu_pgd(cpu, type) + pgd_index(address))
17841+#endif
17842+
17843 /*
17844 * a shortcut which implies the use of the kernel's pgd, instead
17845 * of a process's
17846@@ -660,6 +740,23 @@ static inline int pgd_none(pgd_t pgd)
17847 #define KERNEL_PGD_BOUNDARY pgd_index(PAGE_OFFSET)
17848 #define KERNEL_PGD_PTRS (PTRS_PER_PGD - KERNEL_PGD_BOUNDARY)
17849
17850+#ifdef CONFIG_X86_32
17851+#define USER_PGD_PTRS KERNEL_PGD_BOUNDARY
17852+#else
17853+#define TASK_SIZE_MAX_SHIFT CONFIG_TASK_SIZE_MAX_SHIFT
17854+#define USER_PGD_PTRS (_AC(1,UL) << (TASK_SIZE_MAX_SHIFT - PGDIR_SHIFT))
17855+
17856+#ifdef CONFIG_PAX_MEMORY_UDEREF
17857+#ifdef __ASSEMBLY__
17858+#define pax_user_shadow_base pax_user_shadow_base(%rip)
17859+#else
17860+extern unsigned long pax_user_shadow_base;
17861+extern pgdval_t clone_pgd_mask;
17862+#endif
17863+#endif
17864+
17865+#endif
17866+
17867 #ifndef __ASSEMBLY__
17868
17869 extern int direct_gbpages;
17870@@ -826,11 +923,24 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm,
17871 * dst and src can be on the same page, but the range must not overlap,
17872 * and must not cross a page boundary.
17873 */
17874-static inline void clone_pgd_range(pgd_t *dst, pgd_t *src, int count)
17875+static inline void clone_pgd_range(pgd_t *dst, const pgd_t *src, int count)
17876 {
17877- memcpy(dst, src, count * sizeof(pgd_t));
17878+ pax_open_kernel();
17879+ while (count--)
17880+ *dst++ = *src++;
17881+ pax_close_kernel();
17882 }
17883
17884+#ifdef CONFIG_PAX_PER_CPU_PGD
17885+extern void __clone_user_pgds(pgd_t *dst, const pgd_t *src);
17886+#endif
17887+
17888+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
17889+extern void __shadow_user_pgds(pgd_t *dst, const pgd_t *src);
17890+#else
17891+static inline void __shadow_user_pgds(pgd_t *dst, const pgd_t *src) {}
17892+#endif
17893+
17894 #define PTE_SHIFT ilog2(PTRS_PER_PTE)
17895 static inline int page_level_shift(enum pg_level level)
17896 {
17897diff --git a/arch/x86/include/asm/pgtable_32.h b/arch/x86/include/asm/pgtable_32.h
17898index 9ee3221..b979c6b 100644
17899--- a/arch/x86/include/asm/pgtable_32.h
17900+++ b/arch/x86/include/asm/pgtable_32.h
17901@@ -25,9 +25,6 @@
17902 struct mm_struct;
17903 struct vm_area_struct;
17904
17905-extern pgd_t swapper_pg_dir[1024];
17906-extern pgd_t initial_page_table[1024];
17907-
17908 static inline void pgtable_cache_init(void) { }
17909 static inline void check_pgt_cache(void) { }
17910 void paging_init(void);
17911@@ -48,6 +45,12 @@ extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t);
17912 # include <asm/pgtable-2level.h>
17913 #endif
17914
17915+extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
17916+extern pgd_t initial_page_table[PTRS_PER_PGD];
17917+#ifdef CONFIG_X86_PAE
17918+extern pmd_t swapper_pm_dir[PTRS_PER_PGD][PTRS_PER_PMD];
17919+#endif
17920+
17921 #if defined(CONFIG_HIGHPTE)
17922 #define pte_offset_map(dir, address) \
17923 ((pte_t *)kmap_atomic(pmd_page(*(dir))) + \
17924@@ -62,12 +65,17 @@ extern void set_pmd_pfn(unsigned long, unsigned long, pgprot_t);
17925 /* Clear a kernel PTE and flush it from the TLB */
17926 #define kpte_clear_flush(ptep, vaddr) \
17927 do { \
17928+ pax_open_kernel(); \
17929 pte_clear(&init_mm, (vaddr), (ptep)); \
17930+ pax_close_kernel(); \
17931 __flush_tlb_one((vaddr)); \
17932 } while (0)
17933
17934 #endif /* !__ASSEMBLY__ */
17935
17936+#define HAVE_ARCH_UNMAPPED_AREA
17937+#define HAVE_ARCH_UNMAPPED_AREA_TOPDOWN
17938+
17939 /*
17940 * kern_addr_valid() is (1) for FLATMEM and (0) for
17941 * SPARSEMEM and DISCONTIGMEM
17942diff --git a/arch/x86/include/asm/pgtable_32_types.h b/arch/x86/include/asm/pgtable_32_types.h
17943index ed5903b..c7fe163 100644
17944--- a/arch/x86/include/asm/pgtable_32_types.h
17945+++ b/arch/x86/include/asm/pgtable_32_types.h
17946@@ -8,7 +8,7 @@
17947 */
17948 #ifdef CONFIG_X86_PAE
17949 # include <asm/pgtable-3level_types.h>
17950-# define PMD_SIZE (1UL << PMD_SHIFT)
17951+# define PMD_SIZE (_AC(1, UL) << PMD_SHIFT)
17952 # define PMD_MASK (~(PMD_SIZE - 1))
17953 #else
17954 # include <asm/pgtable-2level_types.h>
17955@@ -46,6 +46,19 @@ extern bool __vmalloc_start_set; /* set once high_memory is set */
17956 # define VMALLOC_END (FIXADDR_START - 2 * PAGE_SIZE)
17957 #endif
17958
17959+#ifdef CONFIG_PAX_KERNEXEC
17960+#ifndef __ASSEMBLY__
17961+extern unsigned char MODULES_EXEC_VADDR[];
17962+extern unsigned char MODULES_EXEC_END[];
17963+#endif
17964+#include <asm/boot.h>
17965+#define ktla_ktva(addr) (addr + LOAD_PHYSICAL_ADDR + PAGE_OFFSET)
17966+#define ktva_ktla(addr) (addr - LOAD_PHYSICAL_ADDR - PAGE_OFFSET)
17967+#else
17968+#define ktla_ktva(addr) (addr)
17969+#define ktva_ktla(addr) (addr)
17970+#endif
17971+
17972 #define MODULES_VADDR VMALLOC_START
17973 #define MODULES_END VMALLOC_END
17974 #define MODULES_LEN (MODULES_VADDR - MODULES_END)
17975diff --git a/arch/x86/include/asm/pgtable_64.h b/arch/x86/include/asm/pgtable_64.h
17976index e22c1db..23a625a 100644
17977--- a/arch/x86/include/asm/pgtable_64.h
17978+++ b/arch/x86/include/asm/pgtable_64.h
17979@@ -16,10 +16,14 @@
17980
17981 extern pud_t level3_kernel_pgt[512];
17982 extern pud_t level3_ident_pgt[512];
17983+extern pud_t level3_vmalloc_start_pgt[512];
17984+extern pud_t level3_vmalloc_end_pgt[512];
17985+extern pud_t level3_vmemmap_pgt[512];
17986+extern pud_t level2_vmemmap_pgt[512];
17987 extern pmd_t level2_kernel_pgt[512];
17988 extern pmd_t level2_fixmap_pgt[512];
17989-extern pmd_t level2_ident_pgt[512];
17990-extern pgd_t init_level4_pgt[];
17991+extern pmd_t level2_ident_pgt[512*2];
17992+extern pgd_t init_level4_pgt[512];
17993
17994 #define swapper_pg_dir init_level4_pgt
17995
17996@@ -61,7 +65,9 @@ static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte)
17997
17998 static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
17999 {
18000+ pax_open_kernel();
18001 *pmdp = pmd;
18002+ pax_close_kernel();
18003 }
18004
18005 static inline void native_pmd_clear(pmd_t *pmd)
18006@@ -97,7 +103,9 @@ static inline pmd_t native_pmdp_get_and_clear(pmd_t *xp)
18007
18008 static inline void native_set_pud(pud_t *pudp, pud_t pud)
18009 {
18010+ pax_open_kernel();
18011 *pudp = pud;
18012+ pax_close_kernel();
18013 }
18014
18015 static inline void native_pud_clear(pud_t *pud)
18016@@ -107,6 +115,13 @@ static inline void native_pud_clear(pud_t *pud)
18017
18018 static inline void native_set_pgd(pgd_t *pgdp, pgd_t pgd)
18019 {
18020+ pax_open_kernel();
18021+ *pgdp = pgd;
18022+ pax_close_kernel();
18023+}
18024+
18025+static inline void native_set_pgd_batched(pgd_t *pgdp, pgd_t pgd)
18026+{
18027 *pgdp = pgd;
18028 }
18029
18030diff --git a/arch/x86/include/asm/pgtable_64_types.h b/arch/x86/include/asm/pgtable_64_types.h
18031index c883bf7..19970b3 100644
18032--- a/arch/x86/include/asm/pgtable_64_types.h
18033+++ b/arch/x86/include/asm/pgtable_64_types.h
18034@@ -61,6 +61,11 @@ typedef struct { pteval_t pte; } pte_t;
18035 #define MODULES_VADDR (__START_KERNEL_map + KERNEL_IMAGE_SIZE)
18036 #define MODULES_END _AC(0xffffffffff000000, UL)
18037 #define MODULES_LEN (MODULES_END - MODULES_VADDR)
18038+#define MODULES_EXEC_VADDR MODULES_VADDR
18039+#define MODULES_EXEC_END MODULES_END
18040+
18041+#define ktla_ktva(addr) (addr)
18042+#define ktva_ktla(addr) (addr)
18043
18044 #define EARLY_DYNAMIC_PAGE_TABLES 64
18045
18046diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
18047index eb3d449..8d95316 100644
18048--- a/arch/x86/include/asm/pgtable_types.h
18049+++ b/arch/x86/include/asm/pgtable_types.h
18050@@ -16,13 +16,12 @@
18051 #define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
18052 #define _PAGE_BIT_PAT 7 /* on 4KB pages */
18053 #define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
18054-#define _PAGE_BIT_UNUSED1 9 /* available for programmer */
18055+#define _PAGE_BIT_SPECIAL 9 /* special mappings, no associated struct page */
18056 #define _PAGE_BIT_IOMAP 10 /* flag used to indicate IO mapping */
18057 #define _PAGE_BIT_HIDDEN 11 /* hidden by kmemcheck */
18058 #define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */
18059-#define _PAGE_BIT_SPECIAL _PAGE_BIT_UNUSED1
18060-#define _PAGE_BIT_CPA_TEST _PAGE_BIT_UNUSED1
18061-#define _PAGE_BIT_SPLITTING _PAGE_BIT_UNUSED1 /* only valid on a PSE pmd */
18062+#define _PAGE_BIT_CPA_TEST _PAGE_BIT_SPECIAL
18063+#define _PAGE_BIT_SPLITTING _PAGE_BIT_SPECIAL /* only valid on a PSE pmd */
18064 #define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
18065
18066 /* If _PAGE_BIT_PRESENT is clear, we use these: */
18067@@ -40,7 +39,6 @@
18068 #define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY)
18069 #define _PAGE_PSE (_AT(pteval_t, 1) << _PAGE_BIT_PSE)
18070 #define _PAGE_GLOBAL (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL)
18071-#define _PAGE_UNUSED1 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1)
18072 #define _PAGE_IOMAP (_AT(pteval_t, 1) << _PAGE_BIT_IOMAP)
18073 #define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT)
18074 #define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
18075@@ -87,8 +85,10 @@
18076
18077 #if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
18078 #define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX)
18079-#else
18080+#elif defined(CONFIG_KMEMCHECK) || defined(CONFIG_MEM_SOFT_DIRTY)
18081 #define _PAGE_NX (_AT(pteval_t, 0))
18082+#else
18083+#define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN)
18084 #endif
18085
18086 #define _PAGE_FILE (_AT(pteval_t, 1) << _PAGE_BIT_FILE)
18087@@ -147,6 +147,9 @@
18088 #define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | \
18089 _PAGE_ACCESSED)
18090
18091+#define PAGE_READONLY_NOEXEC PAGE_READONLY
18092+#define PAGE_SHARED_NOEXEC PAGE_SHARED
18093+
18094 #define __PAGE_KERNEL_EXEC \
18095 (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL)
18096 #define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX)
18097@@ -157,7 +160,7 @@
18098 #define __PAGE_KERNEL_WC (__PAGE_KERNEL | _PAGE_CACHE_WC)
18099 #define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
18100 #define __PAGE_KERNEL_UC_MINUS (__PAGE_KERNEL | _PAGE_PCD)
18101-#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER)
18102+#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RO | _PAGE_USER)
18103 #define __PAGE_KERNEL_VVAR (__PAGE_KERNEL_RO | _PAGE_USER)
18104 #define __PAGE_KERNEL_VVAR_NOCACHE (__PAGE_KERNEL_VVAR | _PAGE_PCD | _PAGE_PWT)
18105 #define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE)
18106@@ -214,7 +217,7 @@
18107 #ifdef CONFIG_X86_64
18108 #define __PAGE_KERNEL_IDENT_LARGE_EXEC __PAGE_KERNEL_LARGE_EXEC
18109 #else
18110-#define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */
18111+#define PTE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */
18112 #define PDE_IDENT_ATTR 0x063 /* PRESENT+RW+DIRTY+ACCESSED */
18113 #define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */
18114 #endif
18115@@ -253,7 +256,17 @@ static inline pgdval_t pgd_flags(pgd_t pgd)
18116 {
18117 return native_pgd_val(pgd) & PTE_FLAGS_MASK;
18118 }
18119+#endif
18120
18121+#if PAGETABLE_LEVELS == 3
18122+#include <asm-generic/pgtable-nopud.h>
18123+#endif
18124+
18125+#if PAGETABLE_LEVELS == 2
18126+#include <asm-generic/pgtable-nopmd.h>
18127+#endif
18128+
18129+#ifndef __ASSEMBLY__
18130 #if PAGETABLE_LEVELS > 3
18131 typedef struct { pudval_t pud; } pud_t;
18132
18133@@ -267,8 +280,6 @@ static inline pudval_t native_pud_val(pud_t pud)
18134 return pud.pud;
18135 }
18136 #else
18137-#include <asm-generic/pgtable-nopud.h>
18138-
18139 static inline pudval_t native_pud_val(pud_t pud)
18140 {
18141 return native_pgd_val(pud.pgd);
18142@@ -288,8 +299,6 @@ static inline pmdval_t native_pmd_val(pmd_t pmd)
18143 return pmd.pmd;
18144 }
18145 #else
18146-#include <asm-generic/pgtable-nopmd.h>
18147-
18148 static inline pmdval_t native_pmd_val(pmd_t pmd)
18149 {
18150 return native_pgd_val(pmd.pud.pgd);
18151@@ -329,7 +338,6 @@ typedef struct page *pgtable_t;
18152
18153 extern pteval_t __supported_pte_mask;
18154 extern void set_nx(void);
18155-extern int nx_enabled;
18156
18157 #define pgprot_writecombine pgprot_writecombine
18158 extern pgprot_t pgprot_writecombine(pgprot_t prot);
18159diff --git a/arch/x86/include/asm/preempt.h b/arch/x86/include/asm/preempt.h
18160index 7024c12..71c46b9 100644
18161--- a/arch/x86/include/asm/preempt.h
18162+++ b/arch/x86/include/asm/preempt.h
18163@@ -87,7 +87,7 @@ static __always_inline void __preempt_count_sub(int val)
18164 */
18165 static __always_inline bool __preempt_count_dec_and_test(void)
18166 {
18167- GEN_UNARY_RMWcc("decl", __preempt_count, __percpu_arg(0), "e");
18168+ GEN_UNARY_RMWcc("decl", "incl", __preempt_count, __percpu_arg(0), "e");
18169 }
18170
18171 /*
18172diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
18173index a4ea023..33aa874 100644
18174--- a/arch/x86/include/asm/processor.h
18175+++ b/arch/x86/include/asm/processor.h
18176@@ -128,7 +128,7 @@ struct cpuinfo_x86 {
18177 /* Index into per_cpu list: */
18178 u16 cpu_index;
18179 u32 microcode;
18180-} __attribute__((__aligned__(SMP_CACHE_BYTES)));
18181+} __attribute__((__aligned__(SMP_CACHE_BYTES))) __randomize_layout;
18182
18183 #define X86_VENDOR_INTEL 0
18184 #define X86_VENDOR_CYRIX 1
18185@@ -199,9 +199,21 @@ static inline void native_cpuid(unsigned int *eax, unsigned int *ebx,
18186 : "memory");
18187 }
18188
18189+/* invpcid (%rdx),%rax */
18190+#define __ASM_INVPCID ".byte 0x66,0x0f,0x38,0x82,0x02"
18191+
18192+#define INVPCID_SINGLE_ADDRESS 0UL
18193+#define INVPCID_SINGLE_CONTEXT 1UL
18194+#define INVPCID_ALL_GLOBAL 2UL
18195+#define INVPCID_ALL_MONGLOBAL 3UL
18196+
18197+#define PCID_KERNEL 0UL
18198+#define PCID_USER 1UL
18199+#define PCID_NOFLUSH (1UL << 63)
18200+
18201 static inline void load_cr3(pgd_t *pgdir)
18202 {
18203- write_cr3(__pa(pgdir));
18204+ write_cr3(__pa(pgdir) | PCID_KERNEL);
18205 }
18206
18207 #ifdef CONFIG_X86_32
18208@@ -283,7 +295,7 @@ struct tss_struct {
18209
18210 } ____cacheline_aligned;
18211
18212-DECLARE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss);
18213+extern struct tss_struct init_tss[NR_CPUS];
18214
18215 /*
18216 * Save the original ist values for checking stack pointers during debugging
18217@@ -479,6 +491,7 @@ struct thread_struct {
18218 unsigned short ds;
18219 unsigned short fsindex;
18220 unsigned short gsindex;
18221+ unsigned short ss;
18222 #endif
18223 #ifdef CONFIG_X86_32
18224 unsigned long ip;
18225@@ -588,29 +601,8 @@ static inline void load_sp0(struct tss_struct *tss,
18226 extern unsigned long mmu_cr4_features;
18227 extern u32 *trampoline_cr4_features;
18228
18229-static inline void set_in_cr4(unsigned long mask)
18230-{
18231- unsigned long cr4;
18232-
18233- mmu_cr4_features |= mask;
18234- if (trampoline_cr4_features)
18235- *trampoline_cr4_features = mmu_cr4_features;
18236- cr4 = read_cr4();
18237- cr4 |= mask;
18238- write_cr4(cr4);
18239-}
18240-
18241-static inline void clear_in_cr4(unsigned long mask)
18242-{
18243- unsigned long cr4;
18244-
18245- mmu_cr4_features &= ~mask;
18246- if (trampoline_cr4_features)
18247- *trampoline_cr4_features = mmu_cr4_features;
18248- cr4 = read_cr4();
18249- cr4 &= ~mask;
18250- write_cr4(cr4);
18251-}
18252+extern void set_in_cr4(unsigned long mask);
18253+extern void clear_in_cr4(unsigned long mask);
18254
18255 typedef struct {
18256 unsigned long seg;
18257@@ -836,11 +828,18 @@ static inline void spin_lock_prefetch(const void *x)
18258 */
18259 #define TASK_SIZE PAGE_OFFSET
18260 #define TASK_SIZE_MAX TASK_SIZE
18261+
18262+#ifdef CONFIG_PAX_SEGMEXEC
18263+#define SEGMEXEC_TASK_SIZE (TASK_SIZE / 2)
18264+#define STACK_TOP ((current->mm->pax_flags & MF_PAX_SEGMEXEC)?SEGMEXEC_TASK_SIZE:TASK_SIZE)
18265+#else
18266 #define STACK_TOP TASK_SIZE
18267-#define STACK_TOP_MAX STACK_TOP
18268+#endif
18269+
18270+#define STACK_TOP_MAX TASK_SIZE
18271
18272 #define INIT_THREAD { \
18273- .sp0 = sizeof(init_stack) + (long)&init_stack, \
18274+ .sp0 = sizeof(init_stack) + (long)&init_stack - 8, \
18275 .vm86_info = NULL, \
18276 .sysenter_cs = __KERNEL_CS, \
18277 .io_bitmap_ptr = NULL, \
18278@@ -854,7 +853,7 @@ static inline void spin_lock_prefetch(const void *x)
18279 */
18280 #define INIT_TSS { \
18281 .x86_tss = { \
18282- .sp0 = sizeof(init_stack) + (long)&init_stack, \
18283+ .sp0 = sizeof(init_stack) + (long)&init_stack - 8, \
18284 .ss0 = __KERNEL_DS, \
18285 .ss1 = __KERNEL_CS, \
18286 .io_bitmap_base = INVALID_IO_BITMAP_OFFSET, \
18287@@ -865,11 +864,7 @@ static inline void spin_lock_prefetch(const void *x)
18288 extern unsigned long thread_saved_pc(struct task_struct *tsk);
18289
18290 #define THREAD_SIZE_LONGS (THREAD_SIZE/sizeof(unsigned long))
18291-#define KSTK_TOP(info) \
18292-({ \
18293- unsigned long *__ptr = (unsigned long *)(info); \
18294- (unsigned long)(&__ptr[THREAD_SIZE_LONGS]); \
18295-})
18296+#define KSTK_TOP(info) ((container_of(info, struct task_struct, tinfo))->thread.sp0)
18297
18298 /*
18299 * The below -8 is to reserve 8 bytes on top of the ring0 stack.
18300@@ -884,7 +879,7 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk);
18301 #define task_pt_regs(task) \
18302 ({ \
18303 struct pt_regs *__regs__; \
18304- __regs__ = (struct pt_regs *)(KSTK_TOP(task_stack_page(task))-8); \
18305+ __regs__ = (struct pt_regs *)((task)->thread.sp0); \
18306 __regs__ - 1; \
18307 })
18308
18309@@ -894,13 +889,13 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk);
18310 /*
18311 * User space process size. 47bits minus one guard page.
18312 */
18313-#define TASK_SIZE_MAX ((1UL << 47) - PAGE_SIZE)
18314+#define TASK_SIZE_MAX ((1UL << TASK_SIZE_MAX_SHIFT) - PAGE_SIZE)
18315
18316 /* This decides where the kernel will search for a free chunk of vm
18317 * space during mmap's.
18318 */
18319 #define IA32_PAGE_OFFSET ((current->personality & ADDR_LIMIT_3GB) ? \
18320- 0xc0000000 : 0xFFFFe000)
18321+ 0xc0000000 : 0xFFFFf000)
18322
18323 #define TASK_SIZE (test_thread_flag(TIF_ADDR32) ? \
18324 IA32_PAGE_OFFSET : TASK_SIZE_MAX)
18325@@ -911,11 +906,11 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk);
18326 #define STACK_TOP_MAX TASK_SIZE_MAX
18327
18328 #define INIT_THREAD { \
18329- .sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
18330+ .sp0 = (unsigned long)&init_stack + sizeof(init_stack) - 16 \
18331 }
18332
18333 #define INIT_TSS { \
18334- .x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) \
18335+ .x86_tss.sp0 = (unsigned long)&init_stack + sizeof(init_stack) - 16 \
18336 }
18337
18338 /*
18339@@ -943,6 +938,10 @@ extern void start_thread(struct pt_regs *regs, unsigned long new_ip,
18340 */
18341 #define TASK_UNMAPPED_BASE (PAGE_ALIGN(TASK_SIZE / 3))
18342
18343+#ifdef CONFIG_PAX_SEGMEXEC
18344+#define SEGMEXEC_TASK_UNMAPPED_BASE (PAGE_ALIGN(SEGMEXEC_TASK_SIZE / 3))
18345+#endif
18346+
18347 #define KSTK_EIP(task) (task_pt_regs(task)->ip)
18348
18349 /* Get/set a process' ability to use the timestamp counter instruction */
18350@@ -969,7 +968,7 @@ static inline uint32_t hypervisor_cpuid_base(const char *sig, uint32_t leaves)
18351 return 0;
18352 }
18353
18354-extern unsigned long arch_align_stack(unsigned long sp);
18355+#define arch_align_stack(x) ((x) & ~0xfUL)
18356 extern void free_init_pages(char *what, unsigned long begin, unsigned long end);
18357
18358 void default_idle(void);
18359@@ -979,6 +978,6 @@ bool xen_set_default_idle(void);
18360 #define xen_set_default_idle 0
18361 #endif
18362
18363-void stop_this_cpu(void *dummy);
18364+void stop_this_cpu(void *dummy) __noreturn;
18365 void df_debug(struct pt_regs *regs, long error_code);
18366 #endif /* _ASM_X86_PROCESSOR_H */
18367diff --git a/arch/x86/include/asm/ptrace.h b/arch/x86/include/asm/ptrace.h
18368index 6205f0c..b31a4a4 100644
18369--- a/arch/x86/include/asm/ptrace.h
18370+++ b/arch/x86/include/asm/ptrace.h
18371@@ -84,28 +84,29 @@ static inline unsigned long regs_return_value(struct pt_regs *regs)
18372 }
18373
18374 /*
18375- * user_mode_vm(regs) determines whether a register set came from user mode.
18376+ * user_mode(regs) determines whether a register set came from user mode.
18377 * This is true if V8086 mode was enabled OR if the register set was from
18378 * protected mode with RPL-3 CS value. This tricky test checks that with
18379 * one comparison. Many places in the kernel can bypass this full check
18380- * if they have already ruled out V8086 mode, so user_mode(regs) can be used.
18381+ * if they have already ruled out V8086 mode, so user_mode_novm(regs) can
18382+ * be used.
18383 */
18384-static inline int user_mode(struct pt_regs *regs)
18385+static inline int user_mode_novm(struct pt_regs *regs)
18386 {
18387 #ifdef CONFIG_X86_32
18388 return (regs->cs & SEGMENT_RPL_MASK) == USER_RPL;
18389 #else
18390- return !!(regs->cs & 3);
18391+ return !!(regs->cs & SEGMENT_RPL_MASK);
18392 #endif
18393 }
18394
18395-static inline int user_mode_vm(struct pt_regs *regs)
18396+static inline int user_mode(struct pt_regs *regs)
18397 {
18398 #ifdef CONFIG_X86_32
18399 return ((regs->cs & SEGMENT_RPL_MASK) | (regs->flags & X86_VM_MASK)) >=
18400 USER_RPL;
18401 #else
18402- return user_mode(regs);
18403+ return user_mode_novm(regs);
18404 #endif
18405 }
18406
18407@@ -121,15 +122,16 @@ static inline int v8086_mode(struct pt_regs *regs)
18408 #ifdef CONFIG_X86_64
18409 static inline bool user_64bit_mode(struct pt_regs *regs)
18410 {
18411+ unsigned long cs = regs->cs & 0xffff;
18412 #ifndef CONFIG_PARAVIRT
18413 /*
18414 * On non-paravirt systems, this is the only long mode CPL 3
18415 * selector. We do not allow long mode selectors in the LDT.
18416 */
18417- return regs->cs == __USER_CS;
18418+ return cs == __USER_CS;
18419 #else
18420 /* Headers are too twisted for this to go in paravirt.h. */
18421- return regs->cs == __USER_CS || regs->cs == pv_info.extra_user_64bit_cs;
18422+ return cs == __USER_CS || cs == pv_info.extra_user_64bit_cs;
18423 #endif
18424 }
18425
18426@@ -180,9 +182,11 @@ static inline unsigned long regs_get_register(struct pt_regs *regs,
18427 * Traps from the kernel do not save sp and ss.
18428 * Use the helper function to retrieve sp.
18429 */
18430- if (offset == offsetof(struct pt_regs, sp) &&
18431- regs->cs == __KERNEL_CS)
18432- return kernel_stack_pointer(regs);
18433+ if (offset == offsetof(struct pt_regs, sp)) {
18434+ unsigned long cs = regs->cs & 0xffff;
18435+ if (cs == __KERNEL_CS || cs == __KERNEXEC_KERNEL_CS)
18436+ return kernel_stack_pointer(regs);
18437+ }
18438 #endif
18439 return *(unsigned long *)((unsigned long)regs + offset);
18440 }
18441diff --git a/arch/x86/include/asm/realmode.h b/arch/x86/include/asm/realmode.h
18442index 9c6b890..5305f53 100644
18443--- a/arch/x86/include/asm/realmode.h
18444+++ b/arch/x86/include/asm/realmode.h
18445@@ -22,16 +22,14 @@ struct real_mode_header {
18446 #endif
18447 /* APM/BIOS reboot */
18448 u32 machine_real_restart_asm;
18449-#ifdef CONFIG_X86_64
18450 u32 machine_real_restart_seg;
18451-#endif
18452 };
18453
18454 /* This must match data at trampoline_32/64.S */
18455 struct trampoline_header {
18456 #ifdef CONFIG_X86_32
18457 u32 start;
18458- u16 gdt_pad;
18459+ u16 boot_cs;
18460 u16 gdt_limit;
18461 u32 gdt_base;
18462 #else
18463diff --git a/arch/x86/include/asm/reboot.h b/arch/x86/include/asm/reboot.h
18464index a82c4f1..ac45053 100644
18465--- a/arch/x86/include/asm/reboot.h
18466+++ b/arch/x86/include/asm/reboot.h
18467@@ -6,13 +6,13 @@
18468 struct pt_regs;
18469
18470 struct machine_ops {
18471- void (*restart)(char *cmd);
18472- void (*halt)(void);
18473- void (*power_off)(void);
18474+ void (* __noreturn restart)(char *cmd);
18475+ void (* __noreturn halt)(void);
18476+ void (* __noreturn power_off)(void);
18477 void (*shutdown)(void);
18478 void (*crash_shutdown)(struct pt_regs *);
18479- void (*emergency_restart)(void);
18480-};
18481+ void (* __noreturn emergency_restart)(void);
18482+} __no_const;
18483
18484 extern struct machine_ops machine_ops;
18485
18486diff --git a/arch/x86/include/asm/rmwcc.h b/arch/x86/include/asm/rmwcc.h
18487index 8f7866a..e442f20 100644
18488--- a/arch/x86/include/asm/rmwcc.h
18489+++ b/arch/x86/include/asm/rmwcc.h
18490@@ -3,7 +3,34 @@
18491
18492 #ifdef CC_HAVE_ASM_GOTO
18493
18494-#define __GEN_RMWcc(fullop, var, cc, ...) \
18495+#ifdef CONFIG_PAX_REFCOUNT
18496+#define __GEN_RMWcc(fullop, fullantiop, var, cc, ...) \
18497+do { \
18498+ asm_volatile_goto (fullop \
18499+ ";jno 0f\n" \
18500+ fullantiop \
18501+ ";int $4\n0:\n" \
18502+ _ASM_EXTABLE(0b, 0b) \
18503+ ";j" cc " %l[cc_label]" \
18504+ : : "m" (var), ## __VA_ARGS__ \
18505+ : "memory" : cc_label); \
18506+ return 0; \
18507+cc_label: \
18508+ return 1; \
18509+} while (0)
18510+#else
18511+#define __GEN_RMWcc(fullop, fullantiop, var, cc, ...) \
18512+do { \
18513+ asm_volatile_goto (fullop ";j" cc " %l[cc_label]" \
18514+ : : "m" (var), ## __VA_ARGS__ \
18515+ : "memory" : cc_label); \
18516+ return 0; \
18517+cc_label: \
18518+ return 1; \
18519+} while (0)
18520+#endif
18521+
18522+#define __GEN_RMWcc_unchecked(fullop, var, cc, ...) \
18523 do { \
18524 asm_volatile_goto (fullop "; j" cc " %l[cc_label]" \
18525 : : "m" (var), ## __VA_ARGS__ \
18526@@ -13,15 +40,46 @@ cc_label: \
18527 return 1; \
18528 } while (0)
18529
18530-#define GEN_UNARY_RMWcc(op, var, arg0, cc) \
18531- __GEN_RMWcc(op " " arg0, var, cc)
18532+#define GEN_UNARY_RMWcc(op, antiop, var, arg0, cc) \
18533+ __GEN_RMWcc(op " " arg0, antiop " " arg0, var, cc)
18534
18535-#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \
18536- __GEN_RMWcc(op " %1, " arg0, var, cc, vcon (val))
18537+#define GEN_UNARY_RMWcc_unchecked(op, var, arg0, cc) \
18538+ __GEN_RMWcc_unchecked(op " " arg0, var, cc)
18539+
18540+#define GEN_BINARY_RMWcc(op, antiop, var, vcon, val, arg0, cc) \
18541+ __GEN_RMWcc(op " %1, " arg0, antiop " %1, " arg0, var, cc, vcon (val))
18542+
18543+#define GEN_BINARY_RMWcc_unchecked(op, var, vcon, val, arg0, cc) \
18544+ __GEN_RMWcc_unchecked(op " %1, " arg0, var, cc, vcon (val))
18545
18546 #else /* !CC_HAVE_ASM_GOTO */
18547
18548-#define __GEN_RMWcc(fullop, var, cc, ...) \
18549+#ifdef CONFIG_PAX_REFCOUNT
18550+#define __GEN_RMWcc(fullop, fullantiop, var, cc, ...) \
18551+do { \
18552+ char c; \
18553+ asm volatile (fullop \
18554+ ";jno 0f\n" \
18555+ fullantiop \
18556+ ";int $4\n0:\n" \
18557+ _ASM_EXTABLE(0b, 0b) \
18558+ "; set" cc " %1" \
18559+ : "+m" (var), "=qm" (c) \
18560+ : __VA_ARGS__ : "memory"); \
18561+ return c != 0; \
18562+} while (0)
18563+#else
18564+#define __GEN_RMWcc(fullop, fullantiop, var, cc, ...) \
18565+do { \
18566+ char c; \
18567+ asm volatile (fullop "; set" cc " %1" \
18568+ : "+m" (var), "=qm" (c) \
18569+ : __VA_ARGS__ : "memory"); \
18570+ return c != 0; \
18571+} while (0)
18572+#endif
18573+
18574+#define __GEN_RMWcc_unchecked(fullop, var, cc, ...) \
18575 do { \
18576 char c; \
18577 asm volatile (fullop "; set" cc " %1" \
18578@@ -30,11 +88,17 @@ do { \
18579 return c != 0; \
18580 } while (0)
18581
18582-#define GEN_UNARY_RMWcc(op, var, arg0, cc) \
18583- __GEN_RMWcc(op " " arg0, var, cc)
18584+#define GEN_UNARY_RMWcc(op, antiop, var, arg0, cc) \
18585+ __GEN_RMWcc(op " " arg0, antiop " " arg0, var, cc)
18586+
18587+#define GEN_UNARY_RMWcc_unchecked(op, var, arg0, cc) \
18588+ __GEN_RMWcc_unchecked(op " " arg0, var, cc)
18589+
18590+#define GEN_BINARY_RMWcc(op, antiop, var, vcon, val, arg0, cc) \
18591+ __GEN_RMWcc(op " %2, " arg0, antiop " %2, " arg0, var, cc, vcon (val))
18592
18593-#define GEN_BINARY_RMWcc(op, var, vcon, val, arg0, cc) \
18594- __GEN_RMWcc(op " %2, " arg0, var, cc, vcon (val))
18595+#define GEN_BINARY_RMWcc_unchecked(op, var, vcon, val, arg0, cc) \
18596+ __GEN_RMWcc_unchecked(op " %2, " arg0, var, cc, vcon (val))
18597
18598 #endif /* CC_HAVE_ASM_GOTO */
18599
18600diff --git a/arch/x86/include/asm/rwsem.h b/arch/x86/include/asm/rwsem.h
18601index cad82c9..2e5c5c1 100644
18602--- a/arch/x86/include/asm/rwsem.h
18603+++ b/arch/x86/include/asm/rwsem.h
18604@@ -64,6 +64,14 @@ static inline void __down_read(struct rw_semaphore *sem)
18605 {
18606 asm volatile("# beginning down_read\n\t"
18607 LOCK_PREFIX _ASM_INC "(%1)\n\t"
18608+
18609+#ifdef CONFIG_PAX_REFCOUNT
18610+ "jno 0f\n"
18611+ LOCK_PREFIX _ASM_DEC "(%1)\n"
18612+ "int $4\n0:\n"
18613+ _ASM_EXTABLE(0b, 0b)
18614+#endif
18615+
18616 /* adds 0x00000001 */
18617 " jns 1f\n"
18618 " call call_rwsem_down_read_failed\n"
18619@@ -85,6 +93,14 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
18620 "1:\n\t"
18621 " mov %1,%2\n\t"
18622 " add %3,%2\n\t"
18623+
18624+#ifdef CONFIG_PAX_REFCOUNT
18625+ "jno 0f\n"
18626+ "sub %3,%2\n"
18627+ "int $4\n0:\n"
18628+ _ASM_EXTABLE(0b, 0b)
18629+#endif
18630+
18631 " jle 2f\n\t"
18632 LOCK_PREFIX " cmpxchg %2,%0\n\t"
18633 " jnz 1b\n\t"
18634@@ -104,6 +120,14 @@ static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
18635 long tmp;
18636 asm volatile("# beginning down_write\n\t"
18637 LOCK_PREFIX " xadd %1,(%2)\n\t"
18638+
18639+#ifdef CONFIG_PAX_REFCOUNT
18640+ "jno 0f\n"
18641+ "mov %1,(%2)\n"
18642+ "int $4\n0:\n"
18643+ _ASM_EXTABLE(0b, 0b)
18644+#endif
18645+
18646 /* adds 0xffff0001, returns the old value */
18647 " test " __ASM_SEL(%w1,%k1) "," __ASM_SEL(%w1,%k1) "\n\t"
18648 /* was the active mask 0 before? */
18649@@ -155,6 +179,14 @@ static inline void __up_read(struct rw_semaphore *sem)
18650 long tmp;
18651 asm volatile("# beginning __up_read\n\t"
18652 LOCK_PREFIX " xadd %1,(%2)\n\t"
18653+
18654+#ifdef CONFIG_PAX_REFCOUNT
18655+ "jno 0f\n"
18656+ "mov %1,(%2)\n"
18657+ "int $4\n0:\n"
18658+ _ASM_EXTABLE(0b, 0b)
18659+#endif
18660+
18661 /* subtracts 1, returns the old value */
18662 " jns 1f\n\t"
18663 " call call_rwsem_wake\n" /* expects old value in %edx */
18664@@ -173,6 +205,14 @@ static inline void __up_write(struct rw_semaphore *sem)
18665 long tmp;
18666 asm volatile("# beginning __up_write\n\t"
18667 LOCK_PREFIX " xadd %1,(%2)\n\t"
18668+
18669+#ifdef CONFIG_PAX_REFCOUNT
18670+ "jno 0f\n"
18671+ "mov %1,(%2)\n"
18672+ "int $4\n0:\n"
18673+ _ASM_EXTABLE(0b, 0b)
18674+#endif
18675+
18676 /* subtracts 0xffff0001, returns the old value */
18677 " jns 1f\n\t"
18678 " call call_rwsem_wake\n" /* expects old value in %edx */
18679@@ -190,6 +230,14 @@ static inline void __downgrade_write(struct rw_semaphore *sem)
18680 {
18681 asm volatile("# beginning __downgrade_write\n\t"
18682 LOCK_PREFIX _ASM_ADD "%2,(%1)\n\t"
18683+
18684+#ifdef CONFIG_PAX_REFCOUNT
18685+ "jno 0f\n"
18686+ LOCK_PREFIX _ASM_SUB "%2,(%1)\n"
18687+ "int $4\n0:\n"
18688+ _ASM_EXTABLE(0b, 0b)
18689+#endif
18690+
18691 /*
18692 * transitions 0xZZZZ0001 -> 0xYYYY0001 (i386)
18693 * 0xZZZZZZZZ00000001 -> 0xYYYYYYYY00000001 (x86_64)
18694@@ -208,7 +256,15 @@ static inline void __downgrade_write(struct rw_semaphore *sem)
18695 */
18696 static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem)
18697 {
18698- asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0"
18699+ asm volatile(LOCK_PREFIX _ASM_ADD "%1,%0\n"
18700+
18701+#ifdef CONFIG_PAX_REFCOUNT
18702+ "jno 0f\n"
18703+ LOCK_PREFIX _ASM_SUB "%1,%0\n"
18704+ "int $4\n0:\n"
18705+ _ASM_EXTABLE(0b, 0b)
18706+#endif
18707+
18708 : "+m" (sem->count)
18709 : "er" (delta));
18710 }
18711@@ -218,7 +274,7 @@ static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem)
18712 */
18713 static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem)
18714 {
18715- return delta + xadd(&sem->count, delta);
18716+ return delta + xadd_check_overflow(&sem->count, delta);
18717 }
18718
18719 #endif /* __KERNEL__ */
18720diff --git a/arch/x86/include/asm/segment.h b/arch/x86/include/asm/segment.h
18721index 6f1c3a8..7744f19 100644
18722--- a/arch/x86/include/asm/segment.h
18723+++ b/arch/x86/include/asm/segment.h
18724@@ -64,10 +64,15 @@
18725 * 26 - ESPFIX small SS
18726 * 27 - per-cpu [ offset to per-cpu data area ]
18727 * 28 - stack_canary-20 [ for stack protector ]
18728- * 29 - unused
18729- * 30 - unused
18730+ * 29 - PCI BIOS CS
18731+ * 30 - PCI BIOS DS
18732 * 31 - TSS for double fault handler
18733 */
18734+#define GDT_ENTRY_KERNEXEC_EFI_CS (1)
18735+#define GDT_ENTRY_KERNEXEC_EFI_DS (2)
18736+#define __KERNEXEC_EFI_CS (GDT_ENTRY_KERNEXEC_EFI_CS*8)
18737+#define __KERNEXEC_EFI_DS (GDT_ENTRY_KERNEXEC_EFI_DS*8)
18738+
18739 #define GDT_ENTRY_TLS_MIN 6
18740 #define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1)
18741
18742@@ -79,6 +84,8 @@
18743
18744 #define GDT_ENTRY_KERNEL_CS (GDT_ENTRY_KERNEL_BASE+0)
18745
18746+#define GDT_ENTRY_KERNEXEC_KERNEL_CS (4)
18747+
18748 #define GDT_ENTRY_KERNEL_DS (GDT_ENTRY_KERNEL_BASE+1)
18749
18750 #define GDT_ENTRY_TSS (GDT_ENTRY_KERNEL_BASE+4)
18751@@ -104,6 +111,12 @@
18752 #define __KERNEL_STACK_CANARY 0
18753 #endif
18754
18755+#define GDT_ENTRY_PCIBIOS_CS (GDT_ENTRY_KERNEL_BASE+17)
18756+#define __PCIBIOS_CS (GDT_ENTRY_PCIBIOS_CS * 8)
18757+
18758+#define GDT_ENTRY_PCIBIOS_DS (GDT_ENTRY_KERNEL_BASE+18)
18759+#define __PCIBIOS_DS (GDT_ENTRY_PCIBIOS_DS * 8)
18760+
18761 #define GDT_ENTRY_DOUBLEFAULT_TSS 31
18762
18763 /*
18764@@ -141,7 +154,7 @@
18765 */
18766
18767 /* Matches PNP_CS32 and PNP_CS16 (they must be consecutive) */
18768-#define SEGMENT_IS_PNP_CODE(x) (((x) & 0xf4) == GDT_ENTRY_PNPBIOS_BASE * 8)
18769+#define SEGMENT_IS_PNP_CODE(x) (((x) & 0xFFFCU) == PNP_CS32 || ((x) & 0xFFFCU) == PNP_CS16)
18770
18771
18772 #else
18773@@ -165,6 +178,8 @@
18774 #define __USER32_CS (GDT_ENTRY_DEFAULT_USER32_CS*8+3)
18775 #define __USER32_DS __USER_DS
18776
18777+#define GDT_ENTRY_KERNEXEC_KERNEL_CS 7
18778+
18779 #define GDT_ENTRY_TSS 8 /* needs two entries */
18780 #define GDT_ENTRY_LDT 10 /* needs two entries */
18781 #define GDT_ENTRY_TLS_MIN 12
18782@@ -173,6 +188,8 @@
18783 #define GDT_ENTRY_PER_CPU 15 /* Abused to load per CPU data from limit */
18784 #define __PER_CPU_SEG (GDT_ENTRY_PER_CPU * 8 + 3)
18785
18786+#define GDT_ENTRY_UDEREF_KERNEL_DS 16
18787+
18788 /* TLS indexes for 64bit - hardcoded in arch_prctl */
18789 #define FS_TLS 0
18790 #define GS_TLS 1
18791@@ -180,12 +197,14 @@
18792 #define GS_TLS_SEL ((GDT_ENTRY_TLS_MIN+GS_TLS)*8 + 3)
18793 #define FS_TLS_SEL ((GDT_ENTRY_TLS_MIN+FS_TLS)*8 + 3)
18794
18795-#define GDT_ENTRIES 16
18796+#define GDT_ENTRIES 17
18797
18798 #endif
18799
18800 #define __KERNEL_CS (GDT_ENTRY_KERNEL_CS*8)
18801+#define __KERNEXEC_KERNEL_CS (GDT_ENTRY_KERNEXEC_KERNEL_CS*8)
18802 #define __KERNEL_DS (GDT_ENTRY_KERNEL_DS*8)
18803+#define __UDEREF_KERNEL_DS (GDT_ENTRY_UDEREF_KERNEL_DS*8)
18804 #define __USER_DS (GDT_ENTRY_DEFAULT_USER_DS*8+3)
18805 #define __USER_CS (GDT_ENTRY_DEFAULT_USER_CS*8+3)
18806 #ifndef CONFIG_PARAVIRT
18807@@ -268,7 +287,7 @@ static inline unsigned long get_limit(unsigned long segment)
18808 {
18809 unsigned long __limit;
18810 asm("lsll %1,%0" : "=r" (__limit) : "r" (segment));
18811- return __limit + 1;
18812+ return __limit;
18813 }
18814
18815 #endif /* !__ASSEMBLY__ */
18816diff --git a/arch/x86/include/asm/smap.h b/arch/x86/include/asm/smap.h
18817index 8d3120f..352b440 100644
18818--- a/arch/x86/include/asm/smap.h
18819+++ b/arch/x86/include/asm/smap.h
18820@@ -25,11 +25,40 @@
18821
18822 #include <asm/alternative-asm.h>
18823
18824+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
18825+#define ASM_PAX_OPEN_USERLAND \
18826+ 661: jmp 663f; \
18827+ .pushsection .altinstr_replacement, "a" ; \
18828+ 662: pushq %rax; nop; \
18829+ .popsection ; \
18830+ .pushsection .altinstructions, "a" ; \
18831+ altinstruction_entry 661b, 662b, X86_FEATURE_STRONGUDEREF, 2, 2;\
18832+ .popsection ; \
18833+ call __pax_open_userland; \
18834+ popq %rax; \
18835+ 663:
18836+
18837+#define ASM_PAX_CLOSE_USERLAND \
18838+ 661: jmp 663f; \
18839+ .pushsection .altinstr_replacement, "a" ; \
18840+ 662: pushq %rax; nop; \
18841+ .popsection; \
18842+ .pushsection .altinstructions, "a" ; \
18843+ altinstruction_entry 661b, 662b, X86_FEATURE_STRONGUDEREF, 2, 2;\
18844+ .popsection; \
18845+ call __pax_close_userland; \
18846+ popq %rax; \
18847+ 663:
18848+#else
18849+#define ASM_PAX_OPEN_USERLAND
18850+#define ASM_PAX_CLOSE_USERLAND
18851+#endif
18852+
18853 #ifdef CONFIG_X86_SMAP
18854
18855 #define ASM_CLAC \
18856 661: ASM_NOP3 ; \
18857- .pushsection .altinstr_replacement, "ax" ; \
18858+ .pushsection .altinstr_replacement, "a" ; \
18859 662: __ASM_CLAC ; \
18860 .popsection ; \
18861 .pushsection .altinstructions, "a" ; \
18862@@ -38,7 +67,7 @@
18863
18864 #define ASM_STAC \
18865 661: ASM_NOP3 ; \
18866- .pushsection .altinstr_replacement, "ax" ; \
18867+ .pushsection .altinstr_replacement, "a" ; \
18868 662: __ASM_STAC ; \
18869 .popsection ; \
18870 .pushsection .altinstructions, "a" ; \
18871@@ -56,6 +85,37 @@
18872
18873 #include <asm/alternative.h>
18874
18875+#define __HAVE_ARCH_PAX_OPEN_USERLAND
18876+#define __HAVE_ARCH_PAX_CLOSE_USERLAND
18877+
18878+extern void __pax_open_userland(void);
18879+static __always_inline unsigned long pax_open_userland(void)
18880+{
18881+
18882+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
18883+ asm volatile(ALTERNATIVE(ASM_NOP5, "call %P[open]", X86_FEATURE_STRONGUDEREF)
18884+ :
18885+ : [open] "i" (__pax_open_userland)
18886+ : "memory", "rax");
18887+#endif
18888+
18889+ return 0;
18890+}
18891+
18892+extern void __pax_close_userland(void);
18893+static __always_inline unsigned long pax_close_userland(void)
18894+{
18895+
18896+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
18897+ asm volatile(ALTERNATIVE(ASM_NOP5, "call %P[close]", X86_FEATURE_STRONGUDEREF)
18898+ :
18899+ : [close] "i" (__pax_close_userland)
18900+ : "memory", "rax");
18901+#endif
18902+
18903+ return 0;
18904+}
18905+
18906 #ifdef CONFIG_X86_SMAP
18907
18908 static __always_inline void clac(void)
18909diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h
18910index 8cd27e0..7f05ec8 100644
18911--- a/arch/x86/include/asm/smp.h
18912+++ b/arch/x86/include/asm/smp.h
18913@@ -35,7 +35,7 @@ DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_core_map);
18914 /* cpus sharing the last level cache: */
18915 DECLARE_PER_CPU_READ_MOSTLY(cpumask_var_t, cpu_llc_shared_map);
18916 DECLARE_PER_CPU_READ_MOSTLY(u16, cpu_llc_id);
18917-DECLARE_PER_CPU_READ_MOSTLY(int, cpu_number);
18918+DECLARE_PER_CPU_READ_MOSTLY(unsigned int, cpu_number);
18919
18920 static inline struct cpumask *cpu_sibling_mask(int cpu)
18921 {
18922@@ -78,7 +78,7 @@ struct smp_ops {
18923
18924 void (*send_call_func_ipi)(const struct cpumask *mask);
18925 void (*send_call_func_single_ipi)(int cpu);
18926-};
18927+} __no_const;
18928
18929 /* Globals due to paravirt */
18930 extern void set_cpu_sibling_map(int cpu);
18931@@ -190,14 +190,8 @@ extern unsigned disabled_cpus;
18932 extern int safe_smp_processor_id(void);
18933
18934 #elif defined(CONFIG_X86_64_SMP)
18935-#define raw_smp_processor_id() (this_cpu_read(cpu_number))
18936-
18937-#define stack_smp_processor_id() \
18938-({ \
18939- struct thread_info *ti; \
18940- __asm__("andq %%rsp,%0; ":"=r" (ti) : "0" (CURRENT_MASK)); \
18941- ti->cpu; \
18942-})
18943+#define raw_smp_processor_id() (this_cpu_read(cpu_number))
18944+#define stack_smp_processor_id() raw_smp_processor_id()
18945 #define safe_smp_processor_id() smp_processor_id()
18946
18947 #endif
18948diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h
18949index 0f62f54..cb5d0dd 100644
18950--- a/arch/x86/include/asm/spinlock.h
18951+++ b/arch/x86/include/asm/spinlock.h
18952@@ -222,6 +222,14 @@ static inline int arch_write_can_lock(arch_rwlock_t *lock)
18953 static inline void arch_read_lock(arch_rwlock_t *rw)
18954 {
18955 asm volatile(LOCK_PREFIX READ_LOCK_SIZE(dec) " (%0)\n\t"
18956+
18957+#ifdef CONFIG_PAX_REFCOUNT
18958+ "jno 0f\n"
18959+ LOCK_PREFIX READ_LOCK_SIZE(inc) " (%0)\n"
18960+ "int $4\n0:\n"
18961+ _ASM_EXTABLE(0b, 0b)
18962+#endif
18963+
18964 "jns 1f\n"
18965 "call __read_lock_failed\n\t"
18966 "1:\n"
18967@@ -231,6 +239,14 @@ static inline void arch_read_lock(arch_rwlock_t *rw)
18968 static inline void arch_write_lock(arch_rwlock_t *rw)
18969 {
18970 asm volatile(LOCK_PREFIX WRITE_LOCK_SUB(%1) "(%0)\n\t"
18971+
18972+#ifdef CONFIG_PAX_REFCOUNT
18973+ "jno 0f\n"
18974+ LOCK_PREFIX WRITE_LOCK_ADD(%1) "(%0)\n"
18975+ "int $4\n0:\n"
18976+ _ASM_EXTABLE(0b, 0b)
18977+#endif
18978+
18979 "jz 1f\n"
18980 "call __write_lock_failed\n\t"
18981 "1:\n"
18982@@ -260,13 +276,29 @@ static inline int arch_write_trylock(arch_rwlock_t *lock)
18983
18984 static inline void arch_read_unlock(arch_rwlock_t *rw)
18985 {
18986- asm volatile(LOCK_PREFIX READ_LOCK_SIZE(inc) " %0"
18987+ asm volatile(LOCK_PREFIX READ_LOCK_SIZE(inc) " %0\n"
18988+
18989+#ifdef CONFIG_PAX_REFCOUNT
18990+ "jno 0f\n"
18991+ LOCK_PREFIX READ_LOCK_SIZE(dec) " %0\n"
18992+ "int $4\n0:\n"
18993+ _ASM_EXTABLE(0b, 0b)
18994+#endif
18995+
18996 :"+m" (rw->lock) : : "memory");
18997 }
18998
18999 static inline void arch_write_unlock(arch_rwlock_t *rw)
19000 {
19001- asm volatile(LOCK_PREFIX WRITE_LOCK_ADD(%1) "%0"
19002+ asm volatile(LOCK_PREFIX WRITE_LOCK_ADD(%1) "%0\n"
19003+
19004+#ifdef CONFIG_PAX_REFCOUNT
19005+ "jno 0f\n"
19006+ LOCK_PREFIX WRITE_LOCK_SUB(%1) "%0\n"
19007+ "int $4\n0:\n"
19008+ _ASM_EXTABLE(0b, 0b)
19009+#endif
19010+
19011 : "+m" (rw->write) : "i" (RW_LOCK_BIAS) : "memory");
19012 }
19013
19014diff --git a/arch/x86/include/asm/stackprotector.h b/arch/x86/include/asm/stackprotector.h
19015index 6a99859..03cb807 100644
19016--- a/arch/x86/include/asm/stackprotector.h
19017+++ b/arch/x86/include/asm/stackprotector.h
19018@@ -47,7 +47,7 @@
19019 * head_32 for boot CPU and setup_per_cpu_areas() for others.
19020 */
19021 #define GDT_STACK_CANARY_INIT \
19022- [GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x18),
19023+ [GDT_ENTRY_STACK_CANARY] = GDT_ENTRY_INIT(0x4090, 0, 0x17),
19024
19025 /*
19026 * Initialize the stackprotector canary value.
19027@@ -112,7 +112,7 @@ static inline void setup_stack_canary_segment(int cpu)
19028
19029 static inline void load_stack_canary_segment(void)
19030 {
19031-#ifdef CONFIG_X86_32
19032+#if defined(CONFIG_X86_32) && !defined(CONFIG_PAX_MEMORY_UDEREF)
19033 asm volatile ("mov %0, %%gs" : : "r" (0));
19034 #endif
19035 }
19036diff --git a/arch/x86/include/asm/stacktrace.h b/arch/x86/include/asm/stacktrace.h
19037index 70bbe39..4ae2bd4 100644
19038--- a/arch/x86/include/asm/stacktrace.h
19039+++ b/arch/x86/include/asm/stacktrace.h
19040@@ -11,28 +11,20 @@
19041
19042 extern int kstack_depth_to_print;
19043
19044-struct thread_info;
19045+struct task_struct;
19046 struct stacktrace_ops;
19047
19048-typedef unsigned long (*walk_stack_t)(struct thread_info *tinfo,
19049- unsigned long *stack,
19050- unsigned long bp,
19051- const struct stacktrace_ops *ops,
19052- void *data,
19053- unsigned long *end,
19054- int *graph);
19055+typedef unsigned long walk_stack_t(struct task_struct *task,
19056+ void *stack_start,
19057+ unsigned long *stack,
19058+ unsigned long bp,
19059+ const struct stacktrace_ops *ops,
19060+ void *data,
19061+ unsigned long *end,
19062+ int *graph);
19063
19064-extern unsigned long
19065-print_context_stack(struct thread_info *tinfo,
19066- unsigned long *stack, unsigned long bp,
19067- const struct stacktrace_ops *ops, void *data,
19068- unsigned long *end, int *graph);
19069-
19070-extern unsigned long
19071-print_context_stack_bp(struct thread_info *tinfo,
19072- unsigned long *stack, unsigned long bp,
19073- const struct stacktrace_ops *ops, void *data,
19074- unsigned long *end, int *graph);
19075+extern walk_stack_t print_context_stack;
19076+extern walk_stack_t print_context_stack_bp;
19077
19078 /* Generic stack tracer with callbacks */
19079
19080@@ -40,7 +32,7 @@ struct stacktrace_ops {
19081 void (*address)(void *data, unsigned long address, int reliable);
19082 /* On negative return stop dumping */
19083 int (*stack)(void *data, char *name);
19084- walk_stack_t walk_stack;
19085+ walk_stack_t *walk_stack;
19086 };
19087
19088 void dump_trace(struct task_struct *tsk, struct pt_regs *regs,
19089diff --git a/arch/x86/include/asm/switch_to.h b/arch/x86/include/asm/switch_to.h
19090index d7f3b3b..3cc39f1 100644
19091--- a/arch/x86/include/asm/switch_to.h
19092+++ b/arch/x86/include/asm/switch_to.h
19093@@ -108,7 +108,7 @@ do { \
19094 "call __switch_to\n\t" \
19095 "movq "__percpu_arg([current_task])",%%rsi\n\t" \
19096 __switch_canary \
19097- "movq %P[thread_info](%%rsi),%%r8\n\t" \
19098+ "movq "__percpu_arg([thread_info])",%%r8\n\t" \
19099 "movq %%rax,%%rdi\n\t" \
19100 "testl %[_tif_fork],%P[ti_flags](%%r8)\n\t" \
19101 "jnz ret_from_fork\n\t" \
19102@@ -119,7 +119,7 @@ do { \
19103 [threadrsp] "i" (offsetof(struct task_struct, thread.sp)), \
19104 [ti_flags] "i" (offsetof(struct thread_info, flags)), \
19105 [_tif_fork] "i" (_TIF_FORK), \
19106- [thread_info] "i" (offsetof(struct task_struct, stack)), \
19107+ [thread_info] "m" (current_tinfo), \
19108 [current_task] "m" (current_task) \
19109 __switch_canary_iparam \
19110 : "memory", "cc" __EXTRA_CLOBBER)
19111diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h
19112index 47e5de2..d3dda54 100644
19113--- a/arch/x86/include/asm/thread_info.h
19114+++ b/arch/x86/include/asm/thread_info.h
19115@@ -24,7 +24,6 @@ struct exec_domain;
19116 #include <linux/atomic.h>
19117
19118 struct thread_info {
19119- struct task_struct *task; /* main task structure */
19120 struct exec_domain *exec_domain; /* execution domain */
19121 __u32 flags; /* low level flags */
19122 __u32 status; /* thread synchronous flags */
19123@@ -33,13 +32,13 @@ struct thread_info {
19124 mm_segment_t addr_limit;
19125 struct restart_block restart_block;
19126 void __user *sysenter_return;
19127+ unsigned long lowest_stack;
19128 unsigned int sig_on_uaccess_error:1;
19129 unsigned int uaccess_err:1; /* uaccess failed */
19130 };
19131
19132-#define INIT_THREAD_INFO(tsk) \
19133+#define INIT_THREAD_INFO \
19134 { \
19135- .task = &tsk, \
19136 .exec_domain = &default_exec_domain, \
19137 .flags = 0, \
19138 .cpu = 0, \
19139@@ -50,7 +49,7 @@ struct thread_info {
19140 }, \
19141 }
19142
19143-#define init_thread_info (init_thread_union.thread_info)
19144+#define init_thread_info (init_thread_union.stack)
19145 #define init_stack (init_thread_union.stack)
19146
19147 #else /* !__ASSEMBLY__ */
19148@@ -90,6 +89,7 @@ struct thread_info {
19149 #define TIF_SYSCALL_TRACEPOINT 28 /* syscall tracepoint instrumentation */
19150 #define TIF_ADDR32 29 /* 32-bit address space on 64 bits */
19151 #define TIF_X32 30 /* 32-bit native x86-64 binary */
19152+#define TIF_GRSEC_SETXID 31 /* update credentials on syscall entry/exit */
19153
19154 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
19155 #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
19156@@ -113,17 +113,18 @@ struct thread_info {
19157 #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT)
19158 #define _TIF_ADDR32 (1 << TIF_ADDR32)
19159 #define _TIF_X32 (1 << TIF_X32)
19160+#define _TIF_GRSEC_SETXID (1 << TIF_GRSEC_SETXID)
19161
19162 /* work to do in syscall_trace_enter() */
19163 #define _TIF_WORK_SYSCALL_ENTRY \
19164 (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_EMU | _TIF_SYSCALL_AUDIT | \
19165 _TIF_SECCOMP | _TIF_SINGLESTEP | _TIF_SYSCALL_TRACEPOINT | \
19166- _TIF_NOHZ)
19167+ _TIF_NOHZ | _TIF_GRSEC_SETXID)
19168
19169 /* work to do in syscall_trace_leave() */
19170 #define _TIF_WORK_SYSCALL_EXIT \
19171 (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP | \
19172- _TIF_SYSCALL_TRACEPOINT | _TIF_NOHZ)
19173+ _TIF_SYSCALL_TRACEPOINT | _TIF_NOHZ | _TIF_GRSEC_SETXID)
19174
19175 /* work to do on interrupt/exception return */
19176 #define _TIF_WORK_MASK \
19177@@ -134,7 +135,7 @@ struct thread_info {
19178 /* work to do on any return to user space */
19179 #define _TIF_ALLWORK_MASK \
19180 ((0x0000FFFF & ~_TIF_SECCOMP) | _TIF_SYSCALL_TRACEPOINT | \
19181- _TIF_NOHZ)
19182+ _TIF_NOHZ | _TIF_GRSEC_SETXID)
19183
19184 /* Only used for 64 bit */
19185 #define _TIF_DO_NOTIFY_MASK \
19186@@ -149,7 +150,6 @@ struct thread_info {
19187 #define _TIF_WORK_CTXSW_NEXT (_TIF_WORK_CTXSW)
19188
19189 #define STACK_WARN (THREAD_SIZE/8)
19190-#define KERNEL_STACK_OFFSET (5*(BITS_PER_LONG/8))
19191
19192 /*
19193 * macros/functions for gaining access to the thread information structure
19194@@ -160,26 +160,18 @@ struct thread_info {
19195
19196 DECLARE_PER_CPU(unsigned long, kernel_stack);
19197
19198+DECLARE_PER_CPU(struct thread_info *, current_tinfo);
19199+
19200 static inline struct thread_info *current_thread_info(void)
19201 {
19202- struct thread_info *ti;
19203- ti = (void *)(this_cpu_read_stable(kernel_stack) +
19204- KERNEL_STACK_OFFSET - THREAD_SIZE);
19205- return ti;
19206+ return this_cpu_read_stable(current_tinfo);
19207 }
19208
19209 #else /* !__ASSEMBLY__ */
19210
19211 /* how to get the thread information struct from ASM */
19212 #define GET_THREAD_INFO(reg) \
19213- _ASM_MOV PER_CPU_VAR(kernel_stack),reg ; \
19214- _ASM_SUB $(THREAD_SIZE-KERNEL_STACK_OFFSET),reg ;
19215-
19216-/*
19217- * Same if PER_CPU_VAR(kernel_stack) is, perhaps with some offset, already in
19218- * a certain register (to be used in assembler memory operands).
19219- */
19220-#define THREAD_INFO(reg, off) KERNEL_STACK_OFFSET+(off)-THREAD_SIZE(reg)
19221+ _ASM_MOV PER_CPU_VAR(current_tinfo),reg ;
19222
19223 #endif
19224
19225@@ -237,5 +229,12 @@ static inline bool is_ia32_task(void)
19226 extern void arch_task_cache_init(void);
19227 extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
19228 extern void arch_release_task_struct(struct task_struct *tsk);
19229+
19230+#define __HAVE_THREAD_FUNCTIONS
19231+#define task_thread_info(task) (&(task)->tinfo)
19232+#define task_stack_page(task) ((task)->stack)
19233+#define setup_thread_stack(p, org) do {} while (0)
19234+#define end_of_stack(p) ((unsigned long *)task_stack_page(p) + 1)
19235+
19236 #endif
19237 #endif /* _ASM_X86_THREAD_INFO_H */
19238diff --git a/arch/x86/include/asm/tlbflush.h b/arch/x86/include/asm/tlbflush.h
19239index 04905bf..49203ca 100644
19240--- a/arch/x86/include/asm/tlbflush.h
19241+++ b/arch/x86/include/asm/tlbflush.h
19242@@ -17,18 +17,44 @@
19243
19244 static inline void __native_flush_tlb(void)
19245 {
19246+ if (static_cpu_has(X86_FEATURE_INVPCID)) {
19247+ u64 descriptor[2];
19248+
19249+ descriptor[0] = PCID_KERNEL;
19250+ asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_ALL_MONGLOBAL) : "memory");
19251+ return;
19252+ }
19253+
19254+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
19255+ if (static_cpu_has(X86_FEATURE_PCID)) {
19256+ unsigned int cpu = raw_get_cpu();
19257+
19258+ native_write_cr3(__pa(get_cpu_pgd(cpu, user)) | PCID_USER);
19259+ native_write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL);
19260+ raw_put_cpu_no_resched();
19261+ return;
19262+ }
19263+#endif
19264+
19265 native_write_cr3(native_read_cr3());
19266 }
19267
19268 static inline void __native_flush_tlb_global_irq_disabled(void)
19269 {
19270- unsigned long cr4;
19271+ if (static_cpu_has(X86_FEATURE_INVPCID)) {
19272+ u64 descriptor[2];
19273
19274- cr4 = native_read_cr4();
19275- /* clear PGE */
19276- native_write_cr4(cr4 & ~X86_CR4_PGE);
19277- /* write old PGE again and flush TLBs */
19278- native_write_cr4(cr4);
19279+ descriptor[0] = PCID_KERNEL;
19280+ asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_ALL_GLOBAL) : "memory");
19281+ } else {
19282+ unsigned long cr4;
19283+
19284+ cr4 = native_read_cr4();
19285+ /* clear PGE */
19286+ native_write_cr4(cr4 & ~X86_CR4_PGE);
19287+ /* write old PGE again and flush TLBs */
19288+ native_write_cr4(cr4);
19289+ }
19290 }
19291
19292 static inline void __native_flush_tlb_global(void)
19293@@ -49,6 +75,41 @@ static inline void __native_flush_tlb_global(void)
19294
19295 static inline void __native_flush_tlb_single(unsigned long addr)
19296 {
19297+ if (static_cpu_has(X86_FEATURE_INVPCID)) {
19298+ u64 descriptor[2];
19299+
19300+ descriptor[0] = PCID_KERNEL;
19301+ descriptor[1] = addr;
19302+
19303+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
19304+ if (!static_cpu_has(X86_FEATURE_STRONGUDEREF) || addr >= TASK_SIZE_MAX) {
19305+ if (addr < TASK_SIZE_MAX)
19306+ descriptor[1] += pax_user_shadow_base;
19307+ asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_SINGLE_ADDRESS) : "memory");
19308+ }
19309+
19310+ descriptor[0] = PCID_USER;
19311+ descriptor[1] = addr;
19312+#endif
19313+
19314+ asm volatile(__ASM_INVPCID : : "d"(&descriptor), "a"(INVPCID_SINGLE_ADDRESS) : "memory");
19315+ return;
19316+ }
19317+
19318+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
19319+ if (static_cpu_has(X86_FEATURE_PCID)) {
19320+ unsigned int cpu = raw_get_cpu();
19321+
19322+ native_write_cr3(__pa(get_cpu_pgd(cpu, user)) | PCID_USER | PCID_NOFLUSH);
19323+ asm volatile("invlpg (%0)" ::"r" (addr) : "memory");
19324+ native_write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL | PCID_NOFLUSH);
19325+ raw_put_cpu_no_resched();
19326+
19327+ if (!static_cpu_has(X86_FEATURE_STRONGUDEREF) && addr < TASK_SIZE_MAX)
19328+ addr += pax_user_shadow_base;
19329+ }
19330+#endif
19331+
19332 asm volatile("invlpg (%0)" ::"r" (addr) : "memory");
19333 }
19334
19335diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h
19336index 0d592e0..7437fcc 100644
19337--- a/arch/x86/include/asm/uaccess.h
19338+++ b/arch/x86/include/asm/uaccess.h
19339@@ -7,6 +7,7 @@
19340 #include <linux/compiler.h>
19341 #include <linux/thread_info.h>
19342 #include <linux/string.h>
19343+#include <linux/spinlock.h>
19344 #include <asm/asm.h>
19345 #include <asm/page.h>
19346 #include <asm/smap.h>
19347@@ -29,7 +30,12 @@
19348
19349 #define get_ds() (KERNEL_DS)
19350 #define get_fs() (current_thread_info()->addr_limit)
19351+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
19352+void __set_fs(mm_segment_t x);
19353+void set_fs(mm_segment_t x);
19354+#else
19355 #define set_fs(x) (current_thread_info()->addr_limit = (x))
19356+#endif
19357
19358 #define segment_eq(a, b) ((a).seg == (b).seg)
19359
19360@@ -85,8 +91,36 @@ static inline bool __chk_range_not_ok(unsigned long addr, unsigned long size, un
19361 * checks that the pointer is in the user space range - after calling
19362 * this function, memory access functions may still return -EFAULT.
19363 */
19364-#define access_ok(type, addr, size) \
19365- likely(!__range_not_ok(addr, size, user_addr_max()))
19366+extern int _cond_resched(void);
19367+#define access_ok_noprefault(type, addr, size) (likely(!__range_not_ok(addr, size, user_addr_max())))
19368+#define access_ok(type, addr, size) \
19369+({ \
19370+ unsigned long __size = size; \
19371+ unsigned long __addr = (unsigned long)addr; \
19372+ bool __ret_ao = __range_not_ok(__addr, __size, user_addr_max()) == 0;\
19373+ if (__ret_ao && __size) { \
19374+ unsigned long __addr_ao = __addr & PAGE_MASK; \
19375+ unsigned long __end_ao = __addr + __size - 1; \
19376+ if (unlikely((__end_ao ^ __addr_ao) & PAGE_MASK)) { \
19377+ while (__addr_ao <= __end_ao) { \
19378+ char __c_ao; \
19379+ __addr_ao += PAGE_SIZE; \
19380+ if (__size > PAGE_SIZE) \
19381+ _cond_resched(); \
19382+ if (__get_user(__c_ao, (char __user *)__addr)) \
19383+ break; \
19384+ if (type != VERIFY_WRITE) { \
19385+ __addr = __addr_ao; \
19386+ continue; \
19387+ } \
19388+ if (__put_user(__c_ao, (char __user *)__addr)) \
19389+ break; \
19390+ __addr = __addr_ao; \
19391+ } \
19392+ } \
19393+ } \
19394+ __ret_ao; \
19395+})
19396
19397 /*
19398 * The exception table consists of pairs of addresses relative to the
19399@@ -176,10 +210,12 @@ __typeof__(__builtin_choose_expr(sizeof(x) > sizeof(0UL), 0ULL, 0UL))
19400 register __inttype(*(ptr)) __val_gu asm("%"_ASM_DX); \
19401 __chk_user_ptr(ptr); \
19402 might_fault(); \
19403+ pax_open_userland(); \
19404 asm volatile("call __get_user_%P3" \
19405 : "=a" (__ret_gu), "=r" (__val_gu) \
19406 : "0" (ptr), "i" (sizeof(*(ptr)))); \
19407 (x) = (__typeof__(*(ptr))) __val_gu; \
19408+ pax_close_userland(); \
19409 __ret_gu; \
19410 })
19411
19412@@ -187,13 +223,21 @@ __typeof__(__builtin_choose_expr(sizeof(x) > sizeof(0UL), 0ULL, 0UL))
19413 asm volatile("call __put_user_" #size : "=a" (__ret_pu) \
19414 : "0" ((typeof(*(ptr)))(x)), "c" (ptr) : "ebx")
19415
19416-
19417+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
19418+#define __copyuser_seg "gs;"
19419+#define __COPYUSER_SET_ES "pushl %%gs; popl %%es\n"
19420+#define __COPYUSER_RESTORE_ES "pushl %%ss; popl %%es\n"
19421+#else
19422+#define __copyuser_seg
19423+#define __COPYUSER_SET_ES
19424+#define __COPYUSER_RESTORE_ES
19425+#endif
19426
19427 #ifdef CONFIG_X86_32
19428 #define __put_user_asm_u64(x, addr, err, errret) \
19429 asm volatile(ASM_STAC "\n" \
19430- "1: movl %%eax,0(%2)\n" \
19431- "2: movl %%edx,4(%2)\n" \
19432+ "1: "__copyuser_seg"movl %%eax,0(%2)\n" \
19433+ "2: "__copyuser_seg"movl %%edx,4(%2)\n" \
19434 "3: " ASM_CLAC "\n" \
19435 ".section .fixup,\"ax\"\n" \
19436 "4: movl %3,%0\n" \
19437@@ -206,8 +250,8 @@ __typeof__(__builtin_choose_expr(sizeof(x) > sizeof(0UL), 0ULL, 0UL))
19438
19439 #define __put_user_asm_ex_u64(x, addr) \
19440 asm volatile(ASM_STAC "\n" \
19441- "1: movl %%eax,0(%1)\n" \
19442- "2: movl %%edx,4(%1)\n" \
19443+ "1: "__copyuser_seg"movl %%eax,0(%1)\n" \
19444+ "2: "__copyuser_seg"movl %%edx,4(%1)\n" \
19445 "3: " ASM_CLAC "\n" \
19446 _ASM_EXTABLE_EX(1b, 2b) \
19447 _ASM_EXTABLE_EX(2b, 3b) \
19448@@ -257,7 +301,8 @@ extern void __put_user_8(void);
19449 __typeof__(*(ptr)) __pu_val; \
19450 __chk_user_ptr(ptr); \
19451 might_fault(); \
19452- __pu_val = x; \
19453+ __pu_val = (x); \
19454+ pax_open_userland(); \
19455 switch (sizeof(*(ptr))) { \
19456 case 1: \
19457 __put_user_x(1, __pu_val, ptr, __ret_pu); \
19458@@ -275,6 +320,7 @@ extern void __put_user_8(void);
19459 __put_user_x(X, __pu_val, ptr, __ret_pu); \
19460 break; \
19461 } \
19462+ pax_close_userland(); \
19463 __ret_pu; \
19464 })
19465
19466@@ -355,8 +401,10 @@ do { \
19467 } while (0)
19468
19469 #define __get_user_asm(x, addr, err, itype, rtype, ltype, errret) \
19470+do { \
19471+ pax_open_userland(); \
19472 asm volatile(ASM_STAC "\n" \
19473- "1: mov"itype" %2,%"rtype"1\n" \
19474+ "1: "__copyuser_seg"mov"itype" %2,%"rtype"1\n"\
19475 "2: " ASM_CLAC "\n" \
19476 ".section .fixup,\"ax\"\n" \
19477 "3: mov %3,%0\n" \
19478@@ -364,8 +412,10 @@ do { \
19479 " jmp 2b\n" \
19480 ".previous\n" \
19481 _ASM_EXTABLE(1b, 3b) \
19482- : "=r" (err), ltype(x) \
19483- : "m" (__m(addr)), "i" (errret), "0" (err))
19484+ : "=r" (err), ltype (x) \
19485+ : "m" (__m(addr)), "i" (errret), "0" (err)); \
19486+ pax_close_userland(); \
19487+} while (0)
19488
19489 #define __get_user_size_ex(x, ptr, size) \
19490 do { \
19491@@ -389,7 +439,7 @@ do { \
19492 } while (0)
19493
19494 #define __get_user_asm_ex(x, addr, itype, rtype, ltype) \
19495- asm volatile("1: mov"itype" %1,%"rtype"0\n" \
19496+ asm volatile("1: "__copyuser_seg"mov"itype" %1,%"rtype"0\n"\
19497 "2:\n" \
19498 _ASM_EXTABLE_EX(1b, 2b) \
19499 : ltype(x) : "m" (__m(addr)))
19500@@ -406,13 +456,24 @@ do { \
19501 int __gu_err; \
19502 unsigned long __gu_val; \
19503 __get_user_size(__gu_val, (ptr), (size), __gu_err, -EFAULT); \
19504- (x) = (__force __typeof__(*(ptr)))__gu_val; \
19505+ (x) = (__typeof__(*(ptr)))__gu_val; \
19506 __gu_err; \
19507 })
19508
19509 /* FIXME: this hack is definitely wrong -AK */
19510 struct __large_struct { unsigned long buf[100]; };
19511-#define __m(x) (*(struct __large_struct __user *)(x))
19512+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
19513+#define ____m(x) \
19514+({ \
19515+ unsigned long ____x = (unsigned long)(x); \
19516+ if (____x < pax_user_shadow_base) \
19517+ ____x += pax_user_shadow_base; \
19518+ (typeof(x))____x; \
19519+})
19520+#else
19521+#define ____m(x) (x)
19522+#endif
19523+#define __m(x) (*(struct __large_struct __user *)____m(x))
19524
19525 /*
19526 * Tell gcc we read from memory instead of writing: this is because
19527@@ -420,8 +481,10 @@ struct __large_struct { unsigned long buf[100]; };
19528 * aliasing issues.
19529 */
19530 #define __put_user_asm(x, addr, err, itype, rtype, ltype, errret) \
19531+do { \
19532+ pax_open_userland(); \
19533 asm volatile(ASM_STAC "\n" \
19534- "1: mov"itype" %"rtype"1,%2\n" \
19535+ "1: "__copyuser_seg"mov"itype" %"rtype"1,%2\n"\
19536 "2: " ASM_CLAC "\n" \
19537 ".section .fixup,\"ax\"\n" \
19538 "3: mov %3,%0\n" \
19539@@ -429,10 +492,12 @@ struct __large_struct { unsigned long buf[100]; };
19540 ".previous\n" \
19541 _ASM_EXTABLE(1b, 3b) \
19542 : "=r"(err) \
19543- : ltype(x), "m" (__m(addr)), "i" (errret), "0" (err))
19544+ : ltype (x), "m" (__m(addr)), "i" (errret), "0" (err));\
19545+ pax_close_userland(); \
19546+} while (0)
19547
19548 #define __put_user_asm_ex(x, addr, itype, rtype, ltype) \
19549- asm volatile("1: mov"itype" %"rtype"0,%1\n" \
19550+ asm volatile("1: "__copyuser_seg"mov"itype" %"rtype"0,%1\n"\
19551 "2:\n" \
19552 _ASM_EXTABLE_EX(1b, 2b) \
19553 : : ltype(x), "m" (__m(addr)))
19554@@ -442,11 +507,13 @@ struct __large_struct { unsigned long buf[100]; };
19555 */
19556 #define uaccess_try do { \
19557 current_thread_info()->uaccess_err = 0; \
19558+ pax_open_userland(); \
19559 stac(); \
19560 barrier();
19561
19562 #define uaccess_catch(err) \
19563 clac(); \
19564+ pax_close_userland(); \
19565 (err) |= (current_thread_info()->uaccess_err ? -EFAULT : 0); \
19566 } while (0)
19567
19568@@ -471,8 +538,12 @@ struct __large_struct { unsigned long buf[100]; };
19569 * On error, the variable @x is set to zero.
19570 */
19571
19572+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
19573+#define __get_user(x, ptr) get_user((x), (ptr))
19574+#else
19575 #define __get_user(x, ptr) \
19576 __get_user_nocheck((x), (ptr), sizeof(*(ptr)))
19577+#endif
19578
19579 /**
19580 * __put_user: - Write a simple value into user space, with less checking.
19581@@ -494,8 +565,12 @@ struct __large_struct { unsigned long buf[100]; };
19582 * Returns zero on success, or -EFAULT on error.
19583 */
19584
19585+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
19586+#define __put_user(x, ptr) put_user((x), (ptr))
19587+#else
19588 #define __put_user(x, ptr) \
19589 __put_user_nocheck((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr)))
19590+#endif
19591
19592 #define __get_user_unaligned __get_user
19593 #define __put_user_unaligned __put_user
19594@@ -513,7 +588,7 @@ struct __large_struct { unsigned long buf[100]; };
19595 #define get_user_ex(x, ptr) do { \
19596 unsigned long __gue_val; \
19597 __get_user_size_ex((__gue_val), (ptr), (sizeof(*(ptr)))); \
19598- (x) = (__force __typeof__(*(ptr)))__gue_val; \
19599+ (x) = (__typeof__(*(ptr)))__gue_val; \
19600 } while (0)
19601
19602 #define put_user_try uaccess_try
19603@@ -542,18 +617,19 @@ extern void __cmpxchg_wrong_size(void)
19604 __typeof__(ptr) __uval = (uval); \
19605 __typeof__(*(ptr)) __old = (old); \
19606 __typeof__(*(ptr)) __new = (new); \
19607+ pax_open_userland(); \
19608 switch (size) { \
19609 case 1: \
19610 { \
19611 asm volatile("\t" ASM_STAC "\n" \
19612- "1:\t" LOCK_PREFIX "cmpxchgb %4, %2\n" \
19613+ "1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgb %4, %2\n"\
19614 "2:\t" ASM_CLAC "\n" \
19615 "\t.section .fixup, \"ax\"\n" \
19616 "3:\tmov %3, %0\n" \
19617 "\tjmp 2b\n" \
19618 "\t.previous\n" \
19619 _ASM_EXTABLE(1b, 3b) \
19620- : "+r" (__ret), "=a" (__old), "+m" (*(ptr)) \
19621+ : "+r" (__ret), "=a" (__old), "+m" (*____m(ptr))\
19622 : "i" (-EFAULT), "q" (__new), "1" (__old) \
19623 : "memory" \
19624 ); \
19625@@ -562,14 +638,14 @@ extern void __cmpxchg_wrong_size(void)
19626 case 2: \
19627 { \
19628 asm volatile("\t" ASM_STAC "\n" \
19629- "1:\t" LOCK_PREFIX "cmpxchgw %4, %2\n" \
19630+ "1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgw %4, %2\n"\
19631 "2:\t" ASM_CLAC "\n" \
19632 "\t.section .fixup, \"ax\"\n" \
19633 "3:\tmov %3, %0\n" \
19634 "\tjmp 2b\n" \
19635 "\t.previous\n" \
19636 _ASM_EXTABLE(1b, 3b) \
19637- : "+r" (__ret), "=a" (__old), "+m" (*(ptr)) \
19638+ : "+r" (__ret), "=a" (__old), "+m" (*____m(ptr))\
19639 : "i" (-EFAULT), "r" (__new), "1" (__old) \
19640 : "memory" \
19641 ); \
19642@@ -578,14 +654,14 @@ extern void __cmpxchg_wrong_size(void)
19643 case 4: \
19644 { \
19645 asm volatile("\t" ASM_STAC "\n" \
19646- "1:\t" LOCK_PREFIX "cmpxchgl %4, %2\n" \
19647+ "1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgl %4, %2\n"\
19648 "2:\t" ASM_CLAC "\n" \
19649 "\t.section .fixup, \"ax\"\n" \
19650 "3:\tmov %3, %0\n" \
19651 "\tjmp 2b\n" \
19652 "\t.previous\n" \
19653 _ASM_EXTABLE(1b, 3b) \
19654- : "+r" (__ret), "=a" (__old), "+m" (*(ptr)) \
19655+ : "+r" (__ret), "=a" (__old), "+m" (*____m(ptr))\
19656 : "i" (-EFAULT), "r" (__new), "1" (__old) \
19657 : "memory" \
19658 ); \
19659@@ -597,14 +673,14 @@ extern void __cmpxchg_wrong_size(void)
19660 __cmpxchg_wrong_size(); \
19661 \
19662 asm volatile("\t" ASM_STAC "\n" \
19663- "1:\t" LOCK_PREFIX "cmpxchgq %4, %2\n" \
19664+ "1:\t" LOCK_PREFIX __copyuser_seg"cmpxchgq %4, %2\n"\
19665 "2:\t" ASM_CLAC "\n" \
19666 "\t.section .fixup, \"ax\"\n" \
19667 "3:\tmov %3, %0\n" \
19668 "\tjmp 2b\n" \
19669 "\t.previous\n" \
19670 _ASM_EXTABLE(1b, 3b) \
19671- : "+r" (__ret), "=a" (__old), "+m" (*(ptr)) \
19672+ : "+r" (__ret), "=a" (__old), "+m" (*____m(ptr))\
19673 : "i" (-EFAULT), "r" (__new), "1" (__old) \
19674 : "memory" \
19675 ); \
19676@@ -613,6 +689,7 @@ extern void __cmpxchg_wrong_size(void)
19677 default: \
19678 __cmpxchg_wrong_size(); \
19679 } \
19680+ pax_close_userland(); \
19681 *__uval = __old; \
19682 __ret; \
19683 })
19684@@ -636,17 +713,6 @@ extern struct movsl_mask {
19685
19686 #define ARCH_HAS_NOCACHE_UACCESS 1
19687
19688-#ifdef CONFIG_X86_32
19689-# include <asm/uaccess_32.h>
19690-#else
19691-# include <asm/uaccess_64.h>
19692-#endif
19693-
19694-unsigned long __must_check _copy_from_user(void *to, const void __user *from,
19695- unsigned n);
19696-unsigned long __must_check _copy_to_user(void __user *to, const void *from,
19697- unsigned n);
19698-
19699 #ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS
19700 # define copy_user_diag __compiletime_error
19701 #else
19702@@ -656,7 +722,7 @@ unsigned long __must_check _copy_to_user(void __user *to, const void *from,
19703 extern void copy_user_diag("copy_from_user() buffer size is too small")
19704 copy_from_user_overflow(void);
19705 extern void copy_user_diag("copy_to_user() buffer size is too small")
19706-copy_to_user_overflow(void) __asm__("copy_from_user_overflow");
19707+copy_to_user_overflow(void);
19708
19709 #undef copy_user_diag
19710
19711@@ -669,7 +735,7 @@ __copy_from_user_overflow(void) __asm__("copy_from_user_overflow");
19712
19713 extern void
19714 __compiletime_warning("copy_to_user() buffer size is not provably correct")
19715-__copy_to_user_overflow(void) __asm__("copy_from_user_overflow");
19716+__copy_to_user_overflow(void) __asm__("copy_to_user_overflow");
19717 #define __copy_to_user_overflow(size, count) __copy_to_user_overflow()
19718
19719 #else
19720@@ -684,10 +750,16 @@ __copy_from_user_overflow(int size, unsigned long count)
19721
19722 #endif
19723
19724+#ifdef CONFIG_X86_32
19725+# include <asm/uaccess_32.h>
19726+#else
19727+# include <asm/uaccess_64.h>
19728+#endif
19729+
19730 static inline unsigned long __must_check
19731 copy_from_user(void *to, const void __user *from, unsigned long n)
19732 {
19733- int sz = __compiletime_object_size(to);
19734+ size_t sz = __compiletime_object_size(to);
19735
19736 might_fault();
19737
19738@@ -709,12 +781,15 @@ copy_from_user(void *to, const void __user *from, unsigned long n)
19739 * case, and do only runtime checking for non-constant sizes.
19740 */
19741
19742- if (likely(sz < 0 || sz >= n))
19743- n = _copy_from_user(to, from, n);
19744- else if(__builtin_constant_p(n))
19745- copy_from_user_overflow();
19746- else
19747- __copy_from_user_overflow(sz, n);
19748+ if (likely(sz != (size_t)-1 && sz < n)) {
19749+ if(__builtin_constant_p(n))
19750+ copy_from_user_overflow();
19751+ else
19752+ __copy_from_user_overflow(sz, n);
19753+ } if (access_ok(VERIFY_READ, from, n))
19754+ n = __copy_from_user(to, from, n);
19755+ else if ((long)n > 0)
19756+ memset(to, 0, n);
19757
19758 return n;
19759 }
19760@@ -722,17 +797,18 @@ copy_from_user(void *to, const void __user *from, unsigned long n)
19761 static inline unsigned long __must_check
19762 copy_to_user(void __user *to, const void *from, unsigned long n)
19763 {
19764- int sz = __compiletime_object_size(from);
19765+ size_t sz = __compiletime_object_size(from);
19766
19767 might_fault();
19768
19769 /* See the comment in copy_from_user() above. */
19770- if (likely(sz < 0 || sz >= n))
19771- n = _copy_to_user(to, from, n);
19772- else if(__builtin_constant_p(n))
19773- copy_to_user_overflow();
19774- else
19775- __copy_to_user_overflow(sz, n);
19776+ if (likely(sz != (size_t)-1 && sz < n)) {
19777+ if(__builtin_constant_p(n))
19778+ copy_to_user_overflow();
19779+ else
19780+ __copy_to_user_overflow(sz, n);
19781+ } else if (access_ok(VERIFY_WRITE, to, n))
19782+ n = __copy_to_user(to, from, n);
19783
19784 return n;
19785 }
19786diff --git a/arch/x86/include/asm/uaccess_32.h b/arch/x86/include/asm/uaccess_32.h
19787index 3c03a5d..1071638 100644
19788--- a/arch/x86/include/asm/uaccess_32.h
19789+++ b/arch/x86/include/asm/uaccess_32.h
19790@@ -43,6 +43,11 @@ unsigned long __must_check __copy_from_user_ll_nocache_nozero
19791 static __always_inline unsigned long __must_check
19792 __copy_to_user_inatomic(void __user *to, const void *from, unsigned long n)
19793 {
19794+ if ((long)n < 0)
19795+ return n;
19796+
19797+ check_object_size(from, n, true);
19798+
19799 if (__builtin_constant_p(n)) {
19800 unsigned long ret;
19801
19802@@ -82,12 +87,16 @@ static __always_inline unsigned long __must_check
19803 __copy_to_user(void __user *to, const void *from, unsigned long n)
19804 {
19805 might_fault();
19806+
19807 return __copy_to_user_inatomic(to, from, n);
19808 }
19809
19810 static __always_inline unsigned long
19811 __copy_from_user_inatomic(void *to, const void __user *from, unsigned long n)
19812 {
19813+ if ((long)n < 0)
19814+ return n;
19815+
19816 /* Avoid zeroing the tail if the copy fails..
19817 * If 'n' is constant and 1, 2, or 4, we do still zero on a failure,
19818 * but as the zeroing behaviour is only significant when n is not
19819@@ -137,6 +146,12 @@ static __always_inline unsigned long
19820 __copy_from_user(void *to, const void __user *from, unsigned long n)
19821 {
19822 might_fault();
19823+
19824+ if ((long)n < 0)
19825+ return n;
19826+
19827+ check_object_size(to, n, false);
19828+
19829 if (__builtin_constant_p(n)) {
19830 unsigned long ret;
19831
19832@@ -159,6 +174,10 @@ static __always_inline unsigned long __copy_from_user_nocache(void *to,
19833 const void __user *from, unsigned long n)
19834 {
19835 might_fault();
19836+
19837+ if ((long)n < 0)
19838+ return n;
19839+
19840 if (__builtin_constant_p(n)) {
19841 unsigned long ret;
19842
19843@@ -181,7 +200,10 @@ static __always_inline unsigned long
19844 __copy_from_user_inatomic_nocache(void *to, const void __user *from,
19845 unsigned long n)
19846 {
19847- return __copy_from_user_ll_nocache_nozero(to, from, n);
19848+ if ((long)n < 0)
19849+ return n;
19850+
19851+ return __copy_from_user_ll_nocache_nozero(to, from, n);
19852 }
19853
19854 #endif /* _ASM_X86_UACCESS_32_H */
19855diff --git a/arch/x86/include/asm/uaccess_64.h b/arch/x86/include/asm/uaccess_64.h
19856index 12a26b9..206c200 100644
19857--- a/arch/x86/include/asm/uaccess_64.h
19858+++ b/arch/x86/include/asm/uaccess_64.h
19859@@ -10,6 +10,9 @@
19860 #include <asm/alternative.h>
19861 #include <asm/cpufeature.h>
19862 #include <asm/page.h>
19863+#include <asm/pgtable.h>
19864+
19865+#define set_fs(x) (current_thread_info()->addr_limit = (x))
19866
19867 /*
19868 * Copy To/From Userspace
19869@@ -17,14 +20,14 @@
19870
19871 /* Handles exceptions in both to and from, but doesn't do access_ok */
19872 __must_check unsigned long
19873-copy_user_enhanced_fast_string(void *to, const void *from, unsigned len);
19874+copy_user_enhanced_fast_string(void *to, const void *from, unsigned len) __size_overflow(3);
19875 __must_check unsigned long
19876-copy_user_generic_string(void *to, const void *from, unsigned len);
19877+copy_user_generic_string(void *to, const void *from, unsigned len) __size_overflow(3);
19878 __must_check unsigned long
19879-copy_user_generic_unrolled(void *to, const void *from, unsigned len);
19880+copy_user_generic_unrolled(void *to, const void *from, unsigned len) __size_overflow(3);
19881
19882 static __always_inline __must_check unsigned long
19883-copy_user_generic(void *to, const void *from, unsigned len)
19884+copy_user_generic(void *to, const void *from, unsigned long len)
19885 {
19886 unsigned ret;
19887
19888@@ -46,121 +49,170 @@ copy_user_generic(void *to, const void *from, unsigned len)
19889 }
19890
19891 __must_check unsigned long
19892-copy_in_user(void __user *to, const void __user *from, unsigned len);
19893+copy_in_user(void __user *to, const void __user *from, unsigned long len);
19894
19895 static __always_inline __must_check
19896-int __copy_from_user_nocheck(void *dst, const void __user *src, unsigned size)
19897+unsigned long __copy_from_user_nocheck(void *dst, const void __user *src, unsigned long size)
19898 {
19899- int ret = 0;
19900+ size_t sz = __compiletime_object_size(dst);
19901+ unsigned ret = 0;
19902+
19903+ if (size > INT_MAX)
19904+ return size;
19905+
19906+ check_object_size(dst, size, false);
19907+
19908+#ifdef CONFIG_PAX_MEMORY_UDEREF
19909+ if (!access_ok_noprefault(VERIFY_READ, src, size))
19910+ return size;
19911+#endif
19912+
19913+ if (unlikely(sz != (size_t)-1 && sz < size)) {
19914+ if(__builtin_constant_p(size))
19915+ copy_from_user_overflow();
19916+ else
19917+ __copy_from_user_overflow(sz, size);
19918+ return size;
19919+ }
19920
19921 if (!__builtin_constant_p(size))
19922- return copy_user_generic(dst, (__force void *)src, size);
19923+ return copy_user_generic(dst, (__force_kernel const void *)____m(src), size);
19924 switch (size) {
19925- case 1:__get_user_asm(*(u8 *)dst, (u8 __user *)src,
19926+ case 1:__get_user_asm(*(u8 *)dst, (const u8 __user *)src,
19927 ret, "b", "b", "=q", 1);
19928 return ret;
19929- case 2:__get_user_asm(*(u16 *)dst, (u16 __user *)src,
19930+ case 2:__get_user_asm(*(u16 *)dst, (const u16 __user *)src,
19931 ret, "w", "w", "=r", 2);
19932 return ret;
19933- case 4:__get_user_asm(*(u32 *)dst, (u32 __user *)src,
19934+ case 4:__get_user_asm(*(u32 *)dst, (const u32 __user *)src,
19935 ret, "l", "k", "=r", 4);
19936 return ret;
19937- case 8:__get_user_asm(*(u64 *)dst, (u64 __user *)src,
19938+ case 8:__get_user_asm(*(u64 *)dst, (const u64 __user *)src,
19939 ret, "q", "", "=r", 8);
19940 return ret;
19941 case 10:
19942- __get_user_asm(*(u64 *)dst, (u64 __user *)src,
19943+ __get_user_asm(*(u64 *)dst, (const u64 __user *)src,
19944 ret, "q", "", "=r", 10);
19945 if (unlikely(ret))
19946 return ret;
19947 __get_user_asm(*(u16 *)(8 + (char *)dst),
19948- (u16 __user *)(8 + (char __user *)src),
19949+ (const u16 __user *)(8 + (const char __user *)src),
19950 ret, "w", "w", "=r", 2);
19951 return ret;
19952 case 16:
19953- __get_user_asm(*(u64 *)dst, (u64 __user *)src,
19954+ __get_user_asm(*(u64 *)dst, (const u64 __user *)src,
19955 ret, "q", "", "=r", 16);
19956 if (unlikely(ret))
19957 return ret;
19958 __get_user_asm(*(u64 *)(8 + (char *)dst),
19959- (u64 __user *)(8 + (char __user *)src),
19960+ (const u64 __user *)(8 + (const char __user *)src),
19961 ret, "q", "", "=r", 8);
19962 return ret;
19963 default:
19964- return copy_user_generic(dst, (__force void *)src, size);
19965+ return copy_user_generic(dst, (__force_kernel const void *)____m(src), size);
19966 }
19967 }
19968
19969 static __always_inline __must_check
19970-int __copy_from_user(void *dst, const void __user *src, unsigned size)
19971+unsigned long __copy_from_user(void *dst, const void __user *src, unsigned long size)
19972 {
19973 might_fault();
19974 return __copy_from_user_nocheck(dst, src, size);
19975 }
19976
19977 static __always_inline __must_check
19978-int __copy_to_user_nocheck(void __user *dst, const void *src, unsigned size)
19979+unsigned long __copy_to_user_nocheck(void __user *dst, const void *src, unsigned long size)
19980 {
19981- int ret = 0;
19982+ size_t sz = __compiletime_object_size(src);
19983+ unsigned ret = 0;
19984+
19985+ if (size > INT_MAX)
19986+ return size;
19987+
19988+ check_object_size(src, size, true);
19989+
19990+#ifdef CONFIG_PAX_MEMORY_UDEREF
19991+ if (!access_ok_noprefault(VERIFY_WRITE, dst, size))
19992+ return size;
19993+#endif
19994+
19995+ if (unlikely(sz != (size_t)-1 && sz < size)) {
19996+ if(__builtin_constant_p(size))
19997+ copy_to_user_overflow();
19998+ else
19999+ __copy_to_user_overflow(sz, size);
20000+ return size;
20001+ }
20002
20003 if (!__builtin_constant_p(size))
20004- return copy_user_generic((__force void *)dst, src, size);
20005+ return copy_user_generic((__force_kernel void *)____m(dst), src, size);
20006 switch (size) {
20007- case 1:__put_user_asm(*(u8 *)src, (u8 __user *)dst,
20008+ case 1:__put_user_asm(*(const u8 *)src, (u8 __user *)dst,
20009 ret, "b", "b", "iq", 1);
20010 return ret;
20011- case 2:__put_user_asm(*(u16 *)src, (u16 __user *)dst,
20012+ case 2:__put_user_asm(*(const u16 *)src, (u16 __user *)dst,
20013 ret, "w", "w", "ir", 2);
20014 return ret;
20015- case 4:__put_user_asm(*(u32 *)src, (u32 __user *)dst,
20016+ case 4:__put_user_asm(*(const u32 *)src, (u32 __user *)dst,
20017 ret, "l", "k", "ir", 4);
20018 return ret;
20019- case 8:__put_user_asm(*(u64 *)src, (u64 __user *)dst,
20020+ case 8:__put_user_asm(*(const u64 *)src, (u64 __user *)dst,
20021 ret, "q", "", "er", 8);
20022 return ret;
20023 case 10:
20024- __put_user_asm(*(u64 *)src, (u64 __user *)dst,
20025+ __put_user_asm(*(const u64 *)src, (u64 __user *)dst,
20026 ret, "q", "", "er", 10);
20027 if (unlikely(ret))
20028 return ret;
20029 asm("":::"memory");
20030- __put_user_asm(4[(u16 *)src], 4 + (u16 __user *)dst,
20031+ __put_user_asm(4[(const u16 *)src], 4 + (u16 __user *)dst,
20032 ret, "w", "w", "ir", 2);
20033 return ret;
20034 case 16:
20035- __put_user_asm(*(u64 *)src, (u64 __user *)dst,
20036+ __put_user_asm(*(const u64 *)src, (u64 __user *)dst,
20037 ret, "q", "", "er", 16);
20038 if (unlikely(ret))
20039 return ret;
20040 asm("":::"memory");
20041- __put_user_asm(1[(u64 *)src], 1 + (u64 __user *)dst,
20042+ __put_user_asm(1[(const u64 *)src], 1 + (u64 __user *)dst,
20043 ret, "q", "", "er", 8);
20044 return ret;
20045 default:
20046- return copy_user_generic((__force void *)dst, src, size);
20047+ return copy_user_generic((__force_kernel void *)____m(dst), src, size);
20048 }
20049 }
20050
20051 static __always_inline __must_check
20052-int __copy_to_user(void __user *dst, const void *src, unsigned size)
20053+unsigned long __copy_to_user(void __user *dst, const void *src, unsigned long size)
20054 {
20055 might_fault();
20056 return __copy_to_user_nocheck(dst, src, size);
20057 }
20058
20059 static __always_inline __must_check
20060-int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
20061+unsigned long __copy_in_user(void __user *dst, const void __user *src, unsigned size)
20062 {
20063- int ret = 0;
20064+ unsigned ret = 0;
20065
20066 might_fault();
20067+
20068+ if (size > INT_MAX)
20069+ return size;
20070+
20071+#ifdef CONFIG_PAX_MEMORY_UDEREF
20072+ if (!access_ok_noprefault(VERIFY_READ, src, size))
20073+ return size;
20074+ if (!access_ok_noprefault(VERIFY_WRITE, dst, size))
20075+ return size;
20076+#endif
20077+
20078 if (!__builtin_constant_p(size))
20079- return copy_user_generic((__force void *)dst,
20080- (__force void *)src, size);
20081+ return copy_user_generic((__force_kernel void *)____m(dst),
20082+ (__force_kernel const void *)____m(src), size);
20083 switch (size) {
20084 case 1: {
20085 u8 tmp;
20086- __get_user_asm(tmp, (u8 __user *)src,
20087+ __get_user_asm(tmp, (const u8 __user *)src,
20088 ret, "b", "b", "=q", 1);
20089 if (likely(!ret))
20090 __put_user_asm(tmp, (u8 __user *)dst,
20091@@ -169,7 +221,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
20092 }
20093 case 2: {
20094 u16 tmp;
20095- __get_user_asm(tmp, (u16 __user *)src,
20096+ __get_user_asm(tmp, (const u16 __user *)src,
20097 ret, "w", "w", "=r", 2);
20098 if (likely(!ret))
20099 __put_user_asm(tmp, (u16 __user *)dst,
20100@@ -179,7 +231,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
20101
20102 case 4: {
20103 u32 tmp;
20104- __get_user_asm(tmp, (u32 __user *)src,
20105+ __get_user_asm(tmp, (const u32 __user *)src,
20106 ret, "l", "k", "=r", 4);
20107 if (likely(!ret))
20108 __put_user_asm(tmp, (u32 __user *)dst,
20109@@ -188,7 +240,7 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
20110 }
20111 case 8: {
20112 u64 tmp;
20113- __get_user_asm(tmp, (u64 __user *)src,
20114+ __get_user_asm(tmp, (const u64 __user *)src,
20115 ret, "q", "", "=r", 8);
20116 if (likely(!ret))
20117 __put_user_asm(tmp, (u64 __user *)dst,
20118@@ -196,41 +248,58 @@ int __copy_in_user(void __user *dst, const void __user *src, unsigned size)
20119 return ret;
20120 }
20121 default:
20122- return copy_user_generic((__force void *)dst,
20123- (__force void *)src, size);
20124+ return copy_user_generic((__force_kernel void *)____m(dst),
20125+ (__force_kernel const void *)____m(src), size);
20126 }
20127 }
20128
20129-static __must_check __always_inline int
20130-__copy_from_user_inatomic(void *dst, const void __user *src, unsigned size)
20131+static __must_check __always_inline unsigned long
20132+__copy_from_user_inatomic(void *dst, const void __user *src, unsigned long size)
20133 {
20134 return __copy_from_user_nocheck(dst, src, size);
20135 }
20136
20137-static __must_check __always_inline int
20138-__copy_to_user_inatomic(void __user *dst, const void *src, unsigned size)
20139+static __must_check __always_inline unsigned long
20140+__copy_to_user_inatomic(void __user *dst, const void *src, unsigned long size)
20141 {
20142 return __copy_to_user_nocheck(dst, src, size);
20143 }
20144
20145-extern long __copy_user_nocache(void *dst, const void __user *src,
20146- unsigned size, int zerorest);
20147+extern unsigned long __copy_user_nocache(void *dst, const void __user *src,
20148+ unsigned long size, int zerorest);
20149
20150-static inline int
20151-__copy_from_user_nocache(void *dst, const void __user *src, unsigned size)
20152+static inline unsigned long
20153+__copy_from_user_nocache(void *dst, const void __user *src, unsigned long size)
20154 {
20155 might_fault();
20156+
20157+ if (size > INT_MAX)
20158+ return size;
20159+
20160+#ifdef CONFIG_PAX_MEMORY_UDEREF
20161+ if (!access_ok_noprefault(VERIFY_READ, src, size))
20162+ return size;
20163+#endif
20164+
20165 return __copy_user_nocache(dst, src, size, 1);
20166 }
20167
20168-static inline int
20169+static inline unsigned long
20170 __copy_from_user_inatomic_nocache(void *dst, const void __user *src,
20171- unsigned size)
20172+ unsigned long size)
20173 {
20174+ if (size > INT_MAX)
20175+ return size;
20176+
20177+#ifdef CONFIG_PAX_MEMORY_UDEREF
20178+ if (!access_ok_noprefault(VERIFY_READ, src, size))
20179+ return size;
20180+#endif
20181+
20182 return __copy_user_nocache(dst, src, size, 0);
20183 }
20184
20185 unsigned long
20186-copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest);
20187+copy_user_handle_tail(char __user *to, char __user *from, unsigned long len, unsigned zerorest) __size_overflow(3);
20188
20189 #endif /* _ASM_X86_UACCESS_64_H */
20190diff --git a/arch/x86/include/asm/word-at-a-time.h b/arch/x86/include/asm/word-at-a-time.h
20191index 5b238981..77fdd78 100644
20192--- a/arch/x86/include/asm/word-at-a-time.h
20193+++ b/arch/x86/include/asm/word-at-a-time.h
20194@@ -11,7 +11,7 @@
20195 * and shift, for example.
20196 */
20197 struct word_at_a_time {
20198- const unsigned long one_bits, high_bits;
20199+ unsigned long one_bits, high_bits;
20200 };
20201
20202 #define WORD_AT_A_TIME_CONSTANTS { REPEAT_BYTE(0x01), REPEAT_BYTE(0x80) }
20203diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
20204index e45e4da..44e8572 100644
20205--- a/arch/x86/include/asm/x86_init.h
20206+++ b/arch/x86/include/asm/x86_init.h
20207@@ -129,7 +129,7 @@ struct x86_init_ops {
20208 struct x86_init_timers timers;
20209 struct x86_init_iommu iommu;
20210 struct x86_init_pci pci;
20211-};
20212+} __no_const;
20213
20214 /**
20215 * struct x86_cpuinit_ops - platform specific cpu hotplug setups
20216@@ -140,7 +140,7 @@ struct x86_cpuinit_ops {
20217 void (*setup_percpu_clockev)(void);
20218 void (*early_percpu_clock_init)(void);
20219 void (*fixup_cpu_id)(struct cpuinfo_x86 *c, int node);
20220-};
20221+} __no_const;
20222
20223 struct timespec;
20224
20225@@ -168,7 +168,7 @@ struct x86_platform_ops {
20226 void (*save_sched_clock_state)(void);
20227 void (*restore_sched_clock_state)(void);
20228 void (*apic_post_init)(void);
20229-};
20230+} __no_const;
20231
20232 struct pci_dev;
20233 struct msi_msg;
20234@@ -185,7 +185,7 @@ struct x86_msi_ops {
20235 int (*setup_hpet_msi)(unsigned int irq, unsigned int id);
20236 u32 (*msi_mask_irq)(struct msi_desc *desc, u32 mask, u32 flag);
20237 u32 (*msix_mask_irq)(struct msi_desc *desc, u32 flag);
20238-};
20239+} __no_const;
20240
20241 struct IO_APIC_route_entry;
20242 struct io_apic_irq_attr;
20243@@ -206,7 +206,7 @@ struct x86_io_apic_ops {
20244 unsigned int destination, int vector,
20245 struct io_apic_irq_attr *attr);
20246 void (*eoi_ioapic_pin)(int apic, int pin, int vector);
20247-};
20248+} __no_const;
20249
20250 extern struct x86_init_ops x86_init;
20251 extern struct x86_cpuinit_ops x86_cpuinit;
20252diff --git a/arch/x86/include/asm/xen/page.h b/arch/x86/include/asm/xen/page.h
20253index c949923..c22bfa4 100644
20254--- a/arch/x86/include/asm/xen/page.h
20255+++ b/arch/x86/include/asm/xen/page.h
20256@@ -63,7 +63,7 @@ extern int m2p_remove_override(struct page *page,
20257 extern struct page *m2p_find_override(unsigned long mfn);
20258 extern unsigned long m2p_find_override_pfn(unsigned long mfn, unsigned long pfn);
20259
20260-static inline unsigned long pfn_to_mfn(unsigned long pfn)
20261+static inline unsigned long __intentional_overflow(-1) pfn_to_mfn(unsigned long pfn)
20262 {
20263 unsigned long mfn;
20264
20265diff --git a/arch/x86/include/asm/xsave.h b/arch/x86/include/asm/xsave.h
20266index d949ef2..479b9d1 100644
20267--- a/arch/x86/include/asm/xsave.h
20268+++ b/arch/x86/include/asm/xsave.h
20269@@ -82,8 +82,11 @@ static inline int xsave_user(struct xsave_struct __user *buf)
20270 if (unlikely(err))
20271 return -EFAULT;
20272
20273+ pax_open_userland();
20274 __asm__ __volatile__(ASM_STAC "\n"
20275- "1: .byte " REX_PREFIX "0x0f,0xae,0x27\n"
20276+ "1:"
20277+ __copyuser_seg
20278+ ".byte " REX_PREFIX "0x0f,0xae,0x27\n"
20279 "2: " ASM_CLAC "\n"
20280 ".section .fixup,\"ax\"\n"
20281 "3: movl $-1,%[err]\n"
20282@@ -93,18 +96,22 @@ static inline int xsave_user(struct xsave_struct __user *buf)
20283 : [err] "=r" (err)
20284 : "D" (buf), "a" (-1), "d" (-1), "0" (0)
20285 : "memory");
20286+ pax_close_userland();
20287 return err;
20288 }
20289
20290 static inline int xrestore_user(struct xsave_struct __user *buf, u64 mask)
20291 {
20292 int err;
20293- struct xsave_struct *xstate = ((__force struct xsave_struct *)buf);
20294+ struct xsave_struct *xstate = ((__force_kernel struct xsave_struct *)buf);
20295 u32 lmask = mask;
20296 u32 hmask = mask >> 32;
20297
20298+ pax_open_userland();
20299 __asm__ __volatile__(ASM_STAC "\n"
20300- "1: .byte " REX_PREFIX "0x0f,0xae,0x2f\n"
20301+ "1:"
20302+ __copyuser_seg
20303+ ".byte " REX_PREFIX "0x0f,0xae,0x2f\n"
20304 "2: " ASM_CLAC "\n"
20305 ".section .fixup,\"ax\"\n"
20306 "3: movl $-1,%[err]\n"
20307@@ -114,6 +121,7 @@ static inline int xrestore_user(struct xsave_struct __user *buf, u64 mask)
20308 : [err] "=r" (err)
20309 : "D" (xstate), "a" (lmask), "d" (hmask), "0" (0)
20310 : "memory"); /* memory required? */
20311+ pax_close_userland();
20312 return err;
20313 }
20314
20315diff --git a/arch/x86/include/uapi/asm/e820.h b/arch/x86/include/uapi/asm/e820.h
20316index bbae024..e1528f9 100644
20317--- a/arch/x86/include/uapi/asm/e820.h
20318+++ b/arch/x86/include/uapi/asm/e820.h
20319@@ -63,7 +63,7 @@ struct e820map {
20320 #define ISA_START_ADDRESS 0xa0000
20321 #define ISA_END_ADDRESS 0x100000
20322
20323-#define BIOS_BEGIN 0x000a0000
20324+#define BIOS_BEGIN 0x000c0000
20325 #define BIOS_END 0x00100000
20326
20327 #define BIOS_ROM_BASE 0xffe00000
20328diff --git a/arch/x86/include/uapi/asm/ptrace-abi.h b/arch/x86/include/uapi/asm/ptrace-abi.h
20329index 7b0a55a..ad115bf 100644
20330--- a/arch/x86/include/uapi/asm/ptrace-abi.h
20331+++ b/arch/x86/include/uapi/asm/ptrace-abi.h
20332@@ -49,7 +49,6 @@
20333 #define EFLAGS 144
20334 #define RSP 152
20335 #define SS 160
20336-#define ARGOFFSET R11
20337 #endif /* __ASSEMBLY__ */
20338
20339 /* top of stack page */
20340diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
20341index f4d9600..b45af01 100644
20342--- a/arch/x86/kernel/Makefile
20343+++ b/arch/x86/kernel/Makefile
20344@@ -24,7 +24,7 @@ obj-y += time.o ioport.o ldt.o dumpstack.o nmi.o
20345 obj-y += setup.o x86_init.o i8259.o irqinit.o jump_label.o
20346 obj-$(CONFIG_IRQ_WORK) += irq_work.o
20347 obj-y += probe_roms.o
20348-obj-$(CONFIG_X86_32) += i386_ksyms_32.o
20349+obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
20350 obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
20351 obj-y += syscall_$(BITS).o vsyscall_gtod.o
20352 obj-$(CONFIG_X86_64) += vsyscall_64.o
20353diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
20354index 86281ff..e046fc2 100644
20355--- a/arch/x86/kernel/acpi/boot.c
20356+++ b/arch/x86/kernel/acpi/boot.c
20357@@ -1296,7 +1296,7 @@ static int __init dmi_ignore_irq0_timer_override(const struct dmi_system_id *d)
20358 * If your system is blacklisted here, but you find that acpi=force
20359 * works for you, please contact linux-acpi@vger.kernel.org
20360 */
20361-static struct dmi_system_id __initdata acpi_dmi_table[] = {
20362+static const struct dmi_system_id __initconst acpi_dmi_table[] = {
20363 /*
20364 * Boxes that need ACPI disabled
20365 */
20366@@ -1371,7 +1371,7 @@ static struct dmi_system_id __initdata acpi_dmi_table[] = {
20367 };
20368
20369 /* second table for DMI checks that should run after early-quirks */
20370-static struct dmi_system_id __initdata acpi_dmi_table_late[] = {
20371+static const struct dmi_system_id __initconst acpi_dmi_table_late[] = {
20372 /*
20373 * HP laptops which use a DSDT reporting as HP/SB400/10000,
20374 * which includes some code which overrides all temperature
20375diff --git a/arch/x86/kernel/acpi/sleep.c b/arch/x86/kernel/acpi/sleep.c
20376index 3136820..e2c6577 100644
20377--- a/arch/x86/kernel/acpi/sleep.c
20378+++ b/arch/x86/kernel/acpi/sleep.c
20379@@ -99,8 +99,12 @@ int x86_acpi_suspend_lowlevel(void)
20380 #else /* CONFIG_64BIT */
20381 #ifdef CONFIG_SMP
20382 stack_start = (unsigned long)temp_stack + sizeof(temp_stack);
20383+
20384+ pax_open_kernel();
20385 early_gdt_descr.address =
20386 (unsigned long)get_cpu_gdt_table(smp_processor_id());
20387+ pax_close_kernel();
20388+
20389 initial_gs = per_cpu_offset(smp_processor_id());
20390 #endif
20391 initial_code = (unsigned long)wakeup_long64;
20392diff --git a/arch/x86/kernel/acpi/wakeup_32.S b/arch/x86/kernel/acpi/wakeup_32.S
20393index 665c6b7..eae4d56 100644
20394--- a/arch/x86/kernel/acpi/wakeup_32.S
20395+++ b/arch/x86/kernel/acpi/wakeup_32.S
20396@@ -29,13 +29,11 @@ wakeup_pmode_return:
20397 # and restore the stack ... but you need gdt for this to work
20398 movl saved_context_esp, %esp
20399
20400- movl %cs:saved_magic, %eax
20401- cmpl $0x12345678, %eax
20402+ cmpl $0x12345678, saved_magic
20403 jne bogus_magic
20404
20405 # jump to place where we left off
20406- movl saved_eip, %eax
20407- jmp *%eax
20408+ jmp *(saved_eip)
20409
20410 bogus_magic:
20411 jmp bogus_magic
20412diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
20413index df94598..b7162f9 100644
20414--- a/arch/x86/kernel/alternative.c
20415+++ b/arch/x86/kernel/alternative.c
20416@@ -269,6 +269,13 @@ void __init_or_module apply_alternatives(struct alt_instr *start,
20417 */
20418 for (a = start; a < end; a++) {
20419 instr = (u8 *)&a->instr_offset + a->instr_offset;
20420+
20421+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
20422+ instr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
20423+ if (instr < (u8 *)_text || (u8 *)_einittext <= instr)
20424+ instr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
20425+#endif
20426+
20427 replacement = (u8 *)&a->repl_offset + a->repl_offset;
20428 BUG_ON(a->replacementlen > a->instrlen);
20429 BUG_ON(a->instrlen > sizeof(insnbuf));
20430@@ -285,6 +292,11 @@ void __init_or_module apply_alternatives(struct alt_instr *start,
20431 add_nops(insnbuf + a->replacementlen,
20432 a->instrlen - a->replacementlen);
20433
20434+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
20435+ if (instr < (u8 *)_text || (u8 *)_einittext <= instr)
20436+ instr = ktva_ktla(instr);
20437+#endif
20438+
20439 text_poke_early(instr, insnbuf, a->instrlen);
20440 }
20441 }
20442@@ -300,10 +312,16 @@ static void alternatives_smp_lock(const s32 *start, const s32 *end,
20443 for (poff = start; poff < end; poff++) {
20444 u8 *ptr = (u8 *)poff + *poff;
20445
20446+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
20447+ ptr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
20448+ if (ptr < (u8 *)_text || (u8 *)_einittext <= ptr)
20449+ ptr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
20450+#endif
20451+
20452 if (!*poff || ptr < text || ptr >= text_end)
20453 continue;
20454 /* turn DS segment override prefix into lock prefix */
20455- if (*ptr == 0x3e)
20456+ if (*ktla_ktva(ptr) == 0x3e)
20457 text_poke(ptr, ((unsigned char []){0xf0}), 1);
20458 }
20459 mutex_unlock(&text_mutex);
20460@@ -318,10 +336,16 @@ static void alternatives_smp_unlock(const s32 *start, const s32 *end,
20461 for (poff = start; poff < end; poff++) {
20462 u8 *ptr = (u8 *)poff + *poff;
20463
20464+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
20465+ ptr += ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
20466+ if (ptr < (u8 *)_text || (u8 *)_einittext <= ptr)
20467+ ptr -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
20468+#endif
20469+
20470 if (!*poff || ptr < text || ptr >= text_end)
20471 continue;
20472 /* turn lock prefix into DS segment override prefix */
20473- if (*ptr == 0xf0)
20474+ if (*ktla_ktva(ptr) == 0xf0)
20475 text_poke(ptr, ((unsigned char []){0x3E}), 1);
20476 }
20477 mutex_unlock(&text_mutex);
20478@@ -458,7 +482,7 @@ void __init_or_module apply_paravirt(struct paravirt_patch_site *start,
20479
20480 BUG_ON(p->len > MAX_PATCH_LEN);
20481 /* prep the buffer with the original instructions */
20482- memcpy(insnbuf, p->instr, p->len);
20483+ memcpy(insnbuf, ktla_ktva(p->instr), p->len);
20484 used = pv_init_ops.patch(p->instrtype, p->clobbers, insnbuf,
20485 (unsigned long)p->instr, p->len);
20486
20487@@ -505,7 +529,7 @@ void __init alternative_instructions(void)
20488 if (!uniproc_patched || num_possible_cpus() == 1)
20489 free_init_pages("SMP alternatives",
20490 (unsigned long)__smp_locks,
20491- (unsigned long)__smp_locks_end);
20492+ PAGE_ALIGN((unsigned long)__smp_locks_end));
20493 #endif
20494
20495 apply_paravirt(__parainstructions, __parainstructions_end);
20496@@ -525,13 +549,17 @@ void __init alternative_instructions(void)
20497 * instructions. And on the local CPU you need to be protected again NMI or MCE
20498 * handlers seeing an inconsistent instruction while you patch.
20499 */
20500-void *__init_or_module text_poke_early(void *addr, const void *opcode,
20501+void *__kprobes text_poke_early(void *addr, const void *opcode,
20502 size_t len)
20503 {
20504 unsigned long flags;
20505 local_irq_save(flags);
20506- memcpy(addr, opcode, len);
20507+
20508+ pax_open_kernel();
20509+ memcpy(ktla_ktva(addr), opcode, len);
20510 sync_core();
20511+ pax_close_kernel();
20512+
20513 local_irq_restore(flags);
20514 /* Could also do a CLFLUSH here to speed up CPU recovery; but
20515 that causes hangs on some VIA CPUs. */
20516@@ -553,36 +581,22 @@ void *__init_or_module text_poke_early(void *addr, const void *opcode,
20517 */
20518 void *__kprobes text_poke(void *addr, const void *opcode, size_t len)
20519 {
20520- unsigned long flags;
20521- char *vaddr;
20522+ unsigned char *vaddr = ktla_ktva(addr);
20523 struct page *pages[2];
20524- int i;
20525+ size_t i;
20526
20527 if (!core_kernel_text((unsigned long)addr)) {
20528- pages[0] = vmalloc_to_page(addr);
20529- pages[1] = vmalloc_to_page(addr + PAGE_SIZE);
20530+ pages[0] = vmalloc_to_page(vaddr);
20531+ pages[1] = vmalloc_to_page(vaddr + PAGE_SIZE);
20532 } else {
20533- pages[0] = virt_to_page(addr);
20534+ pages[0] = virt_to_page(vaddr);
20535 WARN_ON(!PageReserved(pages[0]));
20536- pages[1] = virt_to_page(addr + PAGE_SIZE);
20537+ pages[1] = virt_to_page(vaddr + PAGE_SIZE);
20538 }
20539 BUG_ON(!pages[0]);
20540- local_irq_save(flags);
20541- set_fixmap(FIX_TEXT_POKE0, page_to_phys(pages[0]));
20542- if (pages[1])
20543- set_fixmap(FIX_TEXT_POKE1, page_to_phys(pages[1]));
20544- vaddr = (char *)fix_to_virt(FIX_TEXT_POKE0);
20545- memcpy(&vaddr[(unsigned long)addr & ~PAGE_MASK], opcode, len);
20546- clear_fixmap(FIX_TEXT_POKE0);
20547- if (pages[1])
20548- clear_fixmap(FIX_TEXT_POKE1);
20549- local_flush_tlb();
20550- sync_core();
20551- /* Could also do a CLFLUSH here to speed up CPU recovery; but
20552- that causes hangs on some VIA CPUs. */
20553+ text_poke_early(addr, opcode, len);
20554 for (i = 0; i < len; i++)
20555- BUG_ON(((char *)addr)[i] != ((char *)opcode)[i]);
20556- local_irq_restore(flags);
20557+ BUG_ON((vaddr)[i] != ((const unsigned char *)opcode)[i]);
20558 return addr;
20559 }
20560
20561@@ -602,7 +616,7 @@ int poke_int3_handler(struct pt_regs *regs)
20562 if (likely(!bp_patching_in_progress))
20563 return 0;
20564
20565- if (user_mode_vm(regs) || regs->ip != (unsigned long)bp_int3_addr)
20566+ if (user_mode(regs) || regs->ip != (unsigned long)bp_int3_addr)
20567 return 0;
20568
20569 /* set up the specified breakpoint handler */
20570@@ -636,7 +650,7 @@ int poke_int3_handler(struct pt_regs *regs)
20571 */
20572 void *text_poke_bp(void *addr, const void *opcode, size_t len, void *handler)
20573 {
20574- unsigned char int3 = 0xcc;
20575+ const unsigned char int3 = 0xcc;
20576
20577 bp_int3_handler = handler;
20578 bp_int3_addr = (u8 *)addr + sizeof(int3);
20579diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
20580index ad28db7..c538b2c 100644
20581--- a/arch/x86/kernel/apic/apic.c
20582+++ b/arch/x86/kernel/apic/apic.c
20583@@ -201,7 +201,7 @@ int first_system_vector = 0xfe;
20584 /*
20585 * Debug level, exported for io_apic.c
20586 */
20587-unsigned int apic_verbosity;
20588+int apic_verbosity;
20589
20590 int pic_mode;
20591
20592@@ -2000,7 +2000,7 @@ static inline void __smp_error_interrupt(struct pt_regs *regs)
20593 apic_write(APIC_ESR, 0);
20594 v = apic_read(APIC_ESR);
20595 ack_APIC_irq();
20596- atomic_inc(&irq_err_count);
20597+ atomic_inc_unchecked(&irq_err_count);
20598
20599 apic_printk(APIC_DEBUG, KERN_DEBUG "APIC error on CPU%d: %02x",
20600 smp_processor_id(), v);
20601diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c
20602index 7c1b294..e71d27f 100644
20603--- a/arch/x86/kernel/apic/apic_flat_64.c
20604+++ b/arch/x86/kernel/apic/apic_flat_64.c
20605@@ -154,7 +154,7 @@ static int flat_probe(void)
20606 return 1;
20607 }
20608
20609-static struct apic apic_flat = {
20610+static struct apic apic_flat __read_only = {
20611 .name = "flat",
20612 .probe = flat_probe,
20613 .acpi_madt_oem_check = flat_acpi_madt_oem_check,
20614@@ -268,7 +268,7 @@ static int physflat_probe(void)
20615 return 0;
20616 }
20617
20618-static struct apic apic_physflat = {
20619+static struct apic apic_physflat __read_only = {
20620
20621 .name = "physical flat",
20622 .probe = physflat_probe,
20623diff --git a/arch/x86/kernel/apic/apic_noop.c b/arch/x86/kernel/apic/apic_noop.c
20624index 8c7c982..a225910 100644
20625--- a/arch/x86/kernel/apic/apic_noop.c
20626+++ b/arch/x86/kernel/apic/apic_noop.c
20627@@ -118,7 +118,7 @@ static void noop_apic_write(u32 reg, u32 v)
20628 WARN_ON_ONCE(cpu_has_apic && !disable_apic);
20629 }
20630
20631-struct apic apic_noop = {
20632+struct apic apic_noop __read_only = {
20633 .name = "noop",
20634 .probe = noop_probe,
20635 .acpi_madt_oem_check = NULL,
20636diff --git a/arch/x86/kernel/apic/bigsmp_32.c b/arch/x86/kernel/apic/bigsmp_32.c
20637index e4840aa..e7d9dac 100644
20638--- a/arch/x86/kernel/apic/bigsmp_32.c
20639+++ b/arch/x86/kernel/apic/bigsmp_32.c
20640@@ -152,7 +152,7 @@ static int probe_bigsmp(void)
20641 return dmi_bigsmp;
20642 }
20643
20644-static struct apic apic_bigsmp = {
20645+static struct apic apic_bigsmp __read_only = {
20646
20647 .name = "bigsmp",
20648 .probe = probe_bigsmp,
20649diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
20650index 992060e..ecdc3b3 100644
20651--- a/arch/x86/kernel/apic/io_apic.c
20652+++ b/arch/x86/kernel/apic/io_apic.c
20653@@ -1057,7 +1057,7 @@ int IO_APIC_get_PCI_irq_vector(int bus, int slot, int pin,
20654 }
20655 EXPORT_SYMBOL(IO_APIC_get_PCI_irq_vector);
20656
20657-void lock_vector_lock(void)
20658+void lock_vector_lock(void) __acquires(vector_lock)
20659 {
20660 /* Used to the online set of cpus does not change
20661 * during assign_irq_vector.
20662@@ -1065,7 +1065,7 @@ void lock_vector_lock(void)
20663 raw_spin_lock(&vector_lock);
20664 }
20665
20666-void unlock_vector_lock(void)
20667+void unlock_vector_lock(void) __releases(vector_lock)
20668 {
20669 raw_spin_unlock(&vector_lock);
20670 }
20671@@ -2364,7 +2364,7 @@ static void ack_apic_edge(struct irq_data *data)
20672 ack_APIC_irq();
20673 }
20674
20675-atomic_t irq_mis_count;
20676+atomic_unchecked_t irq_mis_count;
20677
20678 #ifdef CONFIG_GENERIC_PENDING_IRQ
20679 static bool io_apic_level_ack_pending(struct irq_cfg *cfg)
20680@@ -2505,7 +2505,7 @@ static void ack_apic_level(struct irq_data *data)
20681 * at the cpu.
20682 */
20683 if (!(v & (1 << (i & 0x1f)))) {
20684- atomic_inc(&irq_mis_count);
20685+ atomic_inc_unchecked(&irq_mis_count);
20686
20687 eoi_ioapic_irq(irq, cfg);
20688 }
20689diff --git a/arch/x86/kernel/apic/probe_32.c b/arch/x86/kernel/apic/probe_32.c
20690index cceb352..a635fd8 100644
20691--- a/arch/x86/kernel/apic/probe_32.c
20692+++ b/arch/x86/kernel/apic/probe_32.c
20693@@ -72,7 +72,7 @@ static int probe_default(void)
20694 return 1;
20695 }
20696
20697-static struct apic apic_default = {
20698+static struct apic apic_default __read_only = {
20699
20700 .name = "default",
20701 .probe = probe_default,
20702diff --git a/arch/x86/kernel/apic/x2apic_cluster.c b/arch/x86/kernel/apic/x2apic_cluster.c
20703index e66766b..1c008ba 100644
20704--- a/arch/x86/kernel/apic/x2apic_cluster.c
20705+++ b/arch/x86/kernel/apic/x2apic_cluster.c
20706@@ -182,7 +182,7 @@ update_clusterinfo(struct notifier_block *nfb, unsigned long action, void *hcpu)
20707 return notifier_from_errno(err);
20708 }
20709
20710-static struct notifier_block __refdata x2apic_cpu_notifier = {
20711+static struct notifier_block x2apic_cpu_notifier = {
20712 .notifier_call = update_clusterinfo,
20713 };
20714
20715@@ -234,7 +234,7 @@ static void cluster_vector_allocation_domain(int cpu, struct cpumask *retmask,
20716 cpumask_and(retmask, mask, per_cpu(cpus_in_cluster, cpu));
20717 }
20718
20719-static struct apic apic_x2apic_cluster = {
20720+static struct apic apic_x2apic_cluster __read_only = {
20721
20722 .name = "cluster x2apic",
20723 .probe = x2apic_cluster_probe,
20724diff --git a/arch/x86/kernel/apic/x2apic_phys.c b/arch/x86/kernel/apic/x2apic_phys.c
20725index 6d600eb..0300c00 100644
20726--- a/arch/x86/kernel/apic/x2apic_phys.c
20727+++ b/arch/x86/kernel/apic/x2apic_phys.c
20728@@ -88,7 +88,7 @@ static int x2apic_phys_probe(void)
20729 return apic == &apic_x2apic_phys;
20730 }
20731
20732-static struct apic apic_x2apic_phys = {
20733+static struct apic apic_x2apic_phys __read_only = {
20734
20735 .name = "physical x2apic",
20736 .probe = x2apic_phys_probe,
20737diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
20738index 7834389..4ffc9c8 100644
20739--- a/arch/x86/kernel/apic/x2apic_uv_x.c
20740+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
20741@@ -350,7 +350,7 @@ static int uv_probe(void)
20742 return apic == &apic_x2apic_uv_x;
20743 }
20744
20745-static struct apic __refdata apic_x2apic_uv_x = {
20746+static struct apic apic_x2apic_uv_x __read_only = {
20747
20748 .name = "UV large system",
20749 .probe = uv_probe,
20750diff --git a/arch/x86/kernel/apm_32.c b/arch/x86/kernel/apm_32.c
20751index 3ab0343..814c4787 100644
20752--- a/arch/x86/kernel/apm_32.c
20753+++ b/arch/x86/kernel/apm_32.c
20754@@ -433,7 +433,7 @@ static DEFINE_MUTEX(apm_mutex);
20755 * This is for buggy BIOS's that refer to (real mode) segment 0x40
20756 * even though they are called in protected mode.
20757 */
20758-static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092,
20759+static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093,
20760 (unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1);
20761
20762 static const char driver_version[] = "1.16ac"; /* no spaces */
20763@@ -611,7 +611,10 @@ static long __apm_bios_call(void *_call)
20764 BUG_ON(cpu != 0);
20765 gdt = get_cpu_gdt_table(cpu);
20766 save_desc_40 = gdt[0x40 / 8];
20767+
20768+ pax_open_kernel();
20769 gdt[0x40 / 8] = bad_bios_desc;
20770+ pax_close_kernel();
20771
20772 apm_irq_save(flags);
20773 APM_DO_SAVE_SEGS;
20774@@ -620,7 +623,11 @@ static long __apm_bios_call(void *_call)
20775 &call->esi);
20776 APM_DO_RESTORE_SEGS;
20777 apm_irq_restore(flags);
20778+
20779+ pax_open_kernel();
20780 gdt[0x40 / 8] = save_desc_40;
20781+ pax_close_kernel();
20782+
20783 put_cpu();
20784
20785 return call->eax & 0xff;
20786@@ -687,7 +694,10 @@ static long __apm_bios_call_simple(void *_call)
20787 BUG_ON(cpu != 0);
20788 gdt = get_cpu_gdt_table(cpu);
20789 save_desc_40 = gdt[0x40 / 8];
20790+
20791+ pax_open_kernel();
20792 gdt[0x40 / 8] = bad_bios_desc;
20793+ pax_close_kernel();
20794
20795 apm_irq_save(flags);
20796 APM_DO_SAVE_SEGS;
20797@@ -695,7 +705,11 @@ static long __apm_bios_call_simple(void *_call)
20798 &call->eax);
20799 APM_DO_RESTORE_SEGS;
20800 apm_irq_restore(flags);
20801+
20802+ pax_open_kernel();
20803 gdt[0x40 / 8] = save_desc_40;
20804+ pax_close_kernel();
20805+
20806 put_cpu();
20807 return error;
20808 }
20809@@ -2362,12 +2376,15 @@ static int __init apm_init(void)
20810 * code to that CPU.
20811 */
20812 gdt = get_cpu_gdt_table(0);
20813+
20814+ pax_open_kernel();
20815 set_desc_base(&gdt[APM_CS >> 3],
20816 (unsigned long)__va((unsigned long)apm_info.bios.cseg << 4));
20817 set_desc_base(&gdt[APM_CS_16 >> 3],
20818 (unsigned long)__va((unsigned long)apm_info.bios.cseg_16 << 4));
20819 set_desc_base(&gdt[APM_DS >> 3],
20820 (unsigned long)__va((unsigned long)apm_info.bios.dseg << 4));
20821+ pax_close_kernel();
20822
20823 proc_create("apm", 0, NULL, &apm_file_ops);
20824
20825diff --git a/arch/x86/kernel/asm-offsets.c b/arch/x86/kernel/asm-offsets.c
20826index 9f6b934..cf5ffb3 100644
20827--- a/arch/x86/kernel/asm-offsets.c
20828+++ b/arch/x86/kernel/asm-offsets.c
20829@@ -32,6 +32,8 @@ void common(void) {
20830 OFFSET(TI_flags, thread_info, flags);
20831 OFFSET(TI_status, thread_info, status);
20832 OFFSET(TI_addr_limit, thread_info, addr_limit);
20833+ OFFSET(TI_lowest_stack, thread_info, lowest_stack);
20834+ DEFINE(TI_task_thread_sp0, offsetof(struct task_struct, thread.sp0) - offsetof(struct task_struct, tinfo));
20835
20836 BLANK();
20837 OFFSET(crypto_tfm_ctx_offset, crypto_tfm, __crt_ctx);
20838@@ -52,8 +54,26 @@ void common(void) {
20839 OFFSET(PV_CPU_irq_enable_sysexit, pv_cpu_ops, irq_enable_sysexit);
20840 OFFSET(PV_CPU_read_cr0, pv_cpu_ops, read_cr0);
20841 OFFSET(PV_MMU_read_cr2, pv_mmu_ops, read_cr2);
20842+
20843+#ifdef CONFIG_PAX_KERNEXEC
20844+ OFFSET(PV_CPU_write_cr0, pv_cpu_ops, write_cr0);
20845 #endif
20846
20847+#ifdef CONFIG_PAX_MEMORY_UDEREF
20848+ OFFSET(PV_MMU_read_cr3, pv_mmu_ops, read_cr3);
20849+ OFFSET(PV_MMU_write_cr3, pv_mmu_ops, write_cr3);
20850+#ifdef CONFIG_X86_64
20851+ OFFSET(PV_MMU_set_pgd_batched, pv_mmu_ops, set_pgd_batched);
20852+#endif
20853+#endif
20854+
20855+#endif
20856+
20857+ BLANK();
20858+ DEFINE(PAGE_SIZE_asm, PAGE_SIZE);
20859+ DEFINE(PAGE_SHIFT_asm, PAGE_SHIFT);
20860+ DEFINE(THREAD_SIZE_asm, THREAD_SIZE);
20861+
20862 #ifdef CONFIG_XEN
20863 BLANK();
20864 OFFSET(XEN_vcpu_info_mask, vcpu_info, evtchn_upcall_mask);
20865diff --git a/arch/x86/kernel/asm-offsets_64.c b/arch/x86/kernel/asm-offsets_64.c
20866index e7c798b..2b2019b 100644
20867--- a/arch/x86/kernel/asm-offsets_64.c
20868+++ b/arch/x86/kernel/asm-offsets_64.c
20869@@ -77,6 +77,7 @@ int main(void)
20870 BLANK();
20871 #undef ENTRY
20872
20873+ DEFINE(TSS_size, sizeof(struct tss_struct));
20874 OFFSET(TSS_ist, tss_struct, x86_tss.ist);
20875 BLANK();
20876
20877diff --git a/arch/x86/kernel/cpu/Makefile b/arch/x86/kernel/cpu/Makefile
20878index 7fd54f0..0691410 100644
20879--- a/arch/x86/kernel/cpu/Makefile
20880+++ b/arch/x86/kernel/cpu/Makefile
20881@@ -8,10 +8,6 @@ CFLAGS_REMOVE_common.o = -pg
20882 CFLAGS_REMOVE_perf_event.o = -pg
20883 endif
20884
20885-# Make sure load_percpu_segment has no stackprotector
20886-nostackp := $(call cc-option, -fno-stack-protector)
20887-CFLAGS_common.o := $(nostackp)
20888-
20889 obj-y := intel_cacheinfo.o scattered.o topology.o
20890 obj-y += proc.o capflags.o powerflags.o common.o
20891 obj-y += rdrand.o
20892diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
20893index ce8b8ff..d7d8851 100644
20894--- a/arch/x86/kernel/cpu/amd.c
20895+++ b/arch/x86/kernel/cpu/amd.c
20896@@ -728,7 +728,7 @@ static void init_amd(struct cpuinfo_x86 *c)
20897 static unsigned int amd_size_cache(struct cpuinfo_x86 *c, unsigned int size)
20898 {
20899 /* AMD errata T13 (order #21922) */
20900- if ((c->x86 == 6)) {
20901+ if (c->x86 == 6) {
20902 /* Duron Rev A0 */
20903 if (c->x86_model == 3 && c->x86_mask == 0)
20904 size = 64;
20905diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
20906index a135239..41fb30a 100644
20907--- a/arch/x86/kernel/cpu/common.c
20908+++ b/arch/x86/kernel/cpu/common.c
20909@@ -88,60 +88,6 @@ static const struct cpu_dev default_cpu = {
20910
20911 static const struct cpu_dev *this_cpu = &default_cpu;
20912
20913-DEFINE_PER_CPU_PAGE_ALIGNED(struct gdt_page, gdt_page) = { .gdt = {
20914-#ifdef CONFIG_X86_64
20915- /*
20916- * We need valid kernel segments for data and code in long mode too
20917- * IRET will check the segment types kkeil 2000/10/28
20918- * Also sysret mandates a special GDT layout
20919- *
20920- * TLS descriptors are currently at a different place compared to i386.
20921- * Hopefully nobody expects them at a fixed place (Wine?)
20922- */
20923- [GDT_ENTRY_KERNEL32_CS] = GDT_ENTRY_INIT(0xc09b, 0, 0xfffff),
20924- [GDT_ENTRY_KERNEL_CS] = GDT_ENTRY_INIT(0xa09b, 0, 0xfffff),
20925- [GDT_ENTRY_KERNEL_DS] = GDT_ENTRY_INIT(0xc093, 0, 0xfffff),
20926- [GDT_ENTRY_DEFAULT_USER32_CS] = GDT_ENTRY_INIT(0xc0fb, 0, 0xfffff),
20927- [GDT_ENTRY_DEFAULT_USER_DS] = GDT_ENTRY_INIT(0xc0f3, 0, 0xfffff),
20928- [GDT_ENTRY_DEFAULT_USER_CS] = GDT_ENTRY_INIT(0xa0fb, 0, 0xfffff),
20929-#else
20930- [GDT_ENTRY_KERNEL_CS] = GDT_ENTRY_INIT(0xc09a, 0, 0xfffff),
20931- [GDT_ENTRY_KERNEL_DS] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff),
20932- [GDT_ENTRY_DEFAULT_USER_CS] = GDT_ENTRY_INIT(0xc0fa, 0, 0xfffff),
20933- [GDT_ENTRY_DEFAULT_USER_DS] = GDT_ENTRY_INIT(0xc0f2, 0, 0xfffff),
20934- /*
20935- * Segments used for calling PnP BIOS have byte granularity.
20936- * They code segments and data segments have fixed 64k limits,
20937- * the transfer segment sizes are set at run time.
20938- */
20939- /* 32-bit code */
20940- [GDT_ENTRY_PNPBIOS_CS32] = GDT_ENTRY_INIT(0x409a, 0, 0xffff),
20941- /* 16-bit code */
20942- [GDT_ENTRY_PNPBIOS_CS16] = GDT_ENTRY_INIT(0x009a, 0, 0xffff),
20943- /* 16-bit data */
20944- [GDT_ENTRY_PNPBIOS_DS] = GDT_ENTRY_INIT(0x0092, 0, 0xffff),
20945- /* 16-bit data */
20946- [GDT_ENTRY_PNPBIOS_TS1] = GDT_ENTRY_INIT(0x0092, 0, 0),
20947- /* 16-bit data */
20948- [GDT_ENTRY_PNPBIOS_TS2] = GDT_ENTRY_INIT(0x0092, 0, 0),
20949- /*
20950- * The APM segments have byte granularity and their bases
20951- * are set at run time. All have 64k limits.
20952- */
20953- /* 32-bit code */
20954- [GDT_ENTRY_APMBIOS_BASE] = GDT_ENTRY_INIT(0x409a, 0, 0xffff),
20955- /* 16-bit code */
20956- [GDT_ENTRY_APMBIOS_BASE+1] = GDT_ENTRY_INIT(0x009a, 0, 0xffff),
20957- /* data */
20958- [GDT_ENTRY_APMBIOS_BASE+2] = GDT_ENTRY_INIT(0x4092, 0, 0xffff),
20959-
20960- [GDT_ENTRY_ESPFIX_SS] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff),
20961- [GDT_ENTRY_PERCPU] = GDT_ENTRY_INIT(0xc092, 0, 0xfffff),
20962- GDT_STACK_CANARY_INIT
20963-#endif
20964-} };
20965-EXPORT_PER_CPU_SYMBOL_GPL(gdt_page);
20966-
20967 static int __init x86_xsave_setup(char *s)
20968 {
20969 setup_clear_cpu_cap(X86_FEATURE_XSAVE);
20970@@ -293,6 +239,59 @@ static __always_inline void setup_smap(struct cpuinfo_x86 *c)
20971 }
20972 }
20973
20974+#ifdef CONFIG_X86_64
20975+static __init int setup_disable_pcid(char *arg)
20976+{
20977+ setup_clear_cpu_cap(X86_FEATURE_PCID);
20978+ setup_clear_cpu_cap(X86_FEATURE_INVPCID);
20979+
20980+#ifdef CONFIG_PAX_MEMORY_UDEREF
20981+ if (clone_pgd_mask != ~(pgdval_t)0UL)
20982+ pax_user_shadow_base = 1UL << TASK_SIZE_MAX_SHIFT;
20983+#endif
20984+
20985+ return 1;
20986+}
20987+__setup("nopcid", setup_disable_pcid);
20988+
20989+static void setup_pcid(struct cpuinfo_x86 *c)
20990+{
20991+ if (!cpu_has(c, X86_FEATURE_PCID)) {
20992+ clear_cpu_cap(c, X86_FEATURE_INVPCID);
20993+
20994+#ifdef CONFIG_PAX_MEMORY_UDEREF
20995+ if (clone_pgd_mask != ~(pgdval_t)0UL) {
20996+ pax_open_kernel();
20997+ pax_user_shadow_base = 1UL << TASK_SIZE_MAX_SHIFT;
20998+ pax_close_kernel();
20999+ printk("PAX: slow and weak UDEREF enabled\n");
21000+ } else
21001+ printk("PAX: UDEREF disabled\n");
21002+#endif
21003+
21004+ return;
21005+ }
21006+
21007+ printk("PAX: PCID detected\n");
21008+ set_in_cr4(X86_CR4_PCIDE);
21009+
21010+#ifdef CONFIG_PAX_MEMORY_UDEREF
21011+ pax_open_kernel();
21012+ clone_pgd_mask = ~(pgdval_t)0UL;
21013+ pax_close_kernel();
21014+ if (pax_user_shadow_base)
21015+ printk("PAX: weak UDEREF enabled\n");
21016+ else {
21017+ set_cpu_cap(c, X86_FEATURE_STRONGUDEREF);
21018+ printk("PAX: strong UDEREF enabled\n");
21019+ }
21020+#endif
21021+
21022+ if (cpu_has(c, X86_FEATURE_INVPCID))
21023+ printk("PAX: INVPCID detected\n");
21024+}
21025+#endif
21026+
21027 /*
21028 * Some CPU features depend on higher CPUID levels, which may not always
21029 * be available due to CPUID level capping or broken virtualization
21030@@ -393,7 +392,7 @@ void switch_to_new_gdt(int cpu)
21031 {
21032 struct desc_ptr gdt_descr;
21033
21034- gdt_descr.address = (long)get_cpu_gdt_table(cpu);
21035+ gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
21036 gdt_descr.size = GDT_SIZE - 1;
21037 load_gdt(&gdt_descr);
21038 /* Reload the per-cpu base */
21039@@ -883,6 +882,10 @@ static void identify_cpu(struct cpuinfo_x86 *c)
21040 setup_smep(c);
21041 setup_smap(c);
21042
21043+#ifdef CONFIG_X86_64
21044+ setup_pcid(c);
21045+#endif
21046+
21047 /*
21048 * The vendor-specific functions might have changed features.
21049 * Now we do "generic changes."
21050@@ -891,6 +894,10 @@ static void identify_cpu(struct cpuinfo_x86 *c)
21051 /* Filter out anything that depends on CPUID levels we don't have */
21052 filter_cpuid_features(c, true);
21053
21054+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF))
21055+ setup_clear_cpu_cap(X86_FEATURE_SEP);
21056+#endif
21057+
21058 /* If the model name is still unset, do table lookup. */
21059 if (!c->x86_model_id[0]) {
21060 const char *p;
21061@@ -1079,14 +1086,16 @@ static __init int setup_disablecpuid(char *arg)
21062 }
21063 __setup("clearcpuid=", setup_disablecpuid);
21064
21065+DEFINE_PER_CPU(struct thread_info *, current_tinfo) = &init_task.tinfo;
21066+EXPORT_PER_CPU_SYMBOL(current_tinfo);
21067+
21068 DEFINE_PER_CPU(unsigned long, kernel_stack) =
21069- (unsigned long)&init_thread_union - KERNEL_STACK_OFFSET + THREAD_SIZE;
21070+ (unsigned long)&init_thread_union - 16 + THREAD_SIZE;
21071 EXPORT_PER_CPU_SYMBOL(kernel_stack);
21072
21073 #ifdef CONFIG_X86_64
21074-struct desc_ptr idt_descr = { NR_VECTORS * 16 - 1, (unsigned long) idt_table };
21075-struct desc_ptr debug_idt_descr = { NR_VECTORS * 16 - 1,
21076- (unsigned long) debug_idt_table };
21077+struct desc_ptr idt_descr __read_only = { NR_VECTORS * 16 - 1, (unsigned long) idt_table };
21078+const struct desc_ptr debug_idt_descr = { NR_VECTORS * 16 - 1, (unsigned long) debug_idt_table };
21079
21080 DEFINE_PER_CPU_FIRST(union irq_stack_union,
21081 irq_stack_union) __aligned(PAGE_SIZE) __visible;
21082@@ -1246,7 +1255,7 @@ void cpu_init(void)
21083 load_ucode_ap();
21084
21085 cpu = stack_smp_processor_id();
21086- t = &per_cpu(init_tss, cpu);
21087+ t = init_tss + cpu;
21088 oist = &per_cpu(orig_ist, cpu);
21089
21090 #ifdef CONFIG_NUMA
21091@@ -1281,7 +1290,6 @@ void cpu_init(void)
21092 wrmsrl(MSR_KERNEL_GS_BASE, 0);
21093 barrier();
21094
21095- x86_configure_nx();
21096 enable_x2apic();
21097
21098 /*
21099@@ -1333,7 +1341,7 @@ void cpu_init(void)
21100 {
21101 int cpu = smp_processor_id();
21102 struct task_struct *curr = current;
21103- struct tss_struct *t = &per_cpu(init_tss, cpu);
21104+ struct tss_struct *t = init_tss + cpu;
21105 struct thread_struct *thread = &curr->thread;
21106
21107 show_ucode_info_early();
21108diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
21109index a952e9c..58a4cbb 100644
21110--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
21111+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
21112@@ -1014,6 +1014,22 @@ static struct attribute *default_attrs[] = {
21113 };
21114
21115 #ifdef CONFIG_AMD_NB
21116+static struct attribute *default_attrs_amd_nb[] = {
21117+ &type.attr,
21118+ &level.attr,
21119+ &coherency_line_size.attr,
21120+ &physical_line_partition.attr,
21121+ &ways_of_associativity.attr,
21122+ &number_of_sets.attr,
21123+ &size.attr,
21124+ &shared_cpu_map.attr,
21125+ &shared_cpu_list.attr,
21126+ NULL,
21127+ NULL,
21128+ NULL,
21129+ NULL
21130+};
21131+
21132 static struct attribute **amd_l3_attrs(void)
21133 {
21134 static struct attribute **attrs;
21135@@ -1024,18 +1040,7 @@ static struct attribute **amd_l3_attrs(void)
21136
21137 n = ARRAY_SIZE(default_attrs);
21138
21139- if (amd_nb_has_feature(AMD_NB_L3_INDEX_DISABLE))
21140- n += 2;
21141-
21142- if (amd_nb_has_feature(AMD_NB_L3_PARTITIONING))
21143- n += 1;
21144-
21145- attrs = kzalloc(n * sizeof (struct attribute *), GFP_KERNEL);
21146- if (attrs == NULL)
21147- return attrs = default_attrs;
21148-
21149- for (n = 0; default_attrs[n]; n++)
21150- attrs[n] = default_attrs[n];
21151+ attrs = default_attrs_amd_nb;
21152
21153 if (amd_nb_has_feature(AMD_NB_L3_INDEX_DISABLE)) {
21154 attrs[n++] = &cache_disable_0.attr;
21155@@ -1086,6 +1091,13 @@ static struct kobj_type ktype_cache = {
21156 .default_attrs = default_attrs,
21157 };
21158
21159+#ifdef CONFIG_AMD_NB
21160+static struct kobj_type ktype_cache_amd_nb = {
21161+ .sysfs_ops = &sysfs_ops,
21162+ .default_attrs = default_attrs_amd_nb,
21163+};
21164+#endif
21165+
21166 static struct kobj_type ktype_percpu_entry = {
21167 .sysfs_ops = &sysfs_ops,
21168 };
21169@@ -1151,20 +1163,26 @@ static int cache_add_dev(struct device *dev)
21170 return retval;
21171 }
21172
21173+#ifdef CONFIG_AMD_NB
21174+ amd_l3_attrs();
21175+#endif
21176+
21177 for (i = 0; i < num_cache_leaves; i++) {
21178+ struct kobj_type *ktype;
21179+
21180 this_object = INDEX_KOBJECT_PTR(cpu, i);
21181 this_object->cpu = cpu;
21182 this_object->index = i;
21183
21184 this_leaf = CPUID4_INFO_IDX(cpu, i);
21185
21186- ktype_cache.default_attrs = default_attrs;
21187+ ktype = &ktype_cache;
21188 #ifdef CONFIG_AMD_NB
21189 if (this_leaf->base.nb)
21190- ktype_cache.default_attrs = amd_l3_attrs();
21191+ ktype = &ktype_cache_amd_nb;
21192 #endif
21193 retval = kobject_init_and_add(&(this_object->kobj),
21194- &ktype_cache,
21195+ ktype,
21196 per_cpu(ici_cache_kobject, cpu),
21197 "index%1lu", i);
21198 if (unlikely(retval)) {
21199diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
21200index 68317c8..c860d41 100644
21201--- a/arch/x86/kernel/cpu/mcheck/mce.c
21202+++ b/arch/x86/kernel/cpu/mcheck/mce.c
21203@@ -45,6 +45,7 @@
21204 #include <asm/processor.h>
21205 #include <asm/mce.h>
21206 #include <asm/msr.h>
21207+#include <asm/local.h>
21208
21209 #include "mce-internal.h"
21210
21211@@ -261,7 +262,7 @@ static void print_mce(struct mce *m)
21212 !(m->mcgstatus & MCG_STATUS_EIPV) ? " !INEXACT!" : "",
21213 m->cs, m->ip);
21214
21215- if (m->cs == __KERNEL_CS)
21216+ if (m->cs == __KERNEL_CS || m->cs == __KERNEXEC_KERNEL_CS)
21217 print_symbol("{%s}", m->ip);
21218 pr_cont("\n");
21219 }
21220@@ -294,10 +295,10 @@ static void print_mce(struct mce *m)
21221
21222 #define PANIC_TIMEOUT 5 /* 5 seconds */
21223
21224-static atomic_t mce_paniced;
21225+static atomic_unchecked_t mce_paniced;
21226
21227 static int fake_panic;
21228-static atomic_t mce_fake_paniced;
21229+static atomic_unchecked_t mce_fake_paniced;
21230
21231 /* Panic in progress. Enable interrupts and wait for final IPI */
21232 static void wait_for_panic(void)
21233@@ -321,7 +322,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp)
21234 /*
21235 * Make sure only one CPU runs in machine check panic
21236 */
21237- if (atomic_inc_return(&mce_paniced) > 1)
21238+ if (atomic_inc_return_unchecked(&mce_paniced) > 1)
21239 wait_for_panic();
21240 barrier();
21241
21242@@ -329,7 +330,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp)
21243 console_verbose();
21244 } else {
21245 /* Don't log too much for fake panic */
21246- if (atomic_inc_return(&mce_fake_paniced) > 1)
21247+ if (atomic_inc_return_unchecked(&mce_fake_paniced) > 1)
21248 return;
21249 }
21250 /* First print corrected ones that are still unlogged */
21251@@ -368,7 +369,7 @@ static void mce_panic(char *msg, struct mce *final, char *exp)
21252 if (!fake_panic) {
21253 if (panic_timeout == 0)
21254 panic_timeout = mca_cfg.panic_timeout;
21255- panic(msg);
21256+ panic("%s", msg);
21257 } else
21258 pr_emerg(HW_ERR "Fake kernel panic: %s\n", msg);
21259 }
21260@@ -699,7 +700,7 @@ static int mce_timed_out(u64 *t)
21261 * might have been modified by someone else.
21262 */
21263 rmb();
21264- if (atomic_read(&mce_paniced))
21265+ if (atomic_read_unchecked(&mce_paniced))
21266 wait_for_panic();
21267 if (!mca_cfg.monarch_timeout)
21268 goto out;
21269@@ -1680,7 +1681,7 @@ static void unexpected_machine_check(struct pt_regs *regs, long error_code)
21270 }
21271
21272 /* Call the installed machine check handler for this CPU setup. */
21273-void (*machine_check_vector)(struct pt_regs *, long error_code) =
21274+void (*machine_check_vector)(struct pt_regs *, long error_code) __read_only =
21275 unexpected_machine_check;
21276
21277 /*
21278@@ -1703,7 +1704,9 @@ void mcheck_cpu_init(struct cpuinfo_x86 *c)
21279 return;
21280 }
21281
21282+ pax_open_kernel();
21283 machine_check_vector = do_machine_check;
21284+ pax_close_kernel();
21285
21286 __mcheck_cpu_init_generic();
21287 __mcheck_cpu_init_vendor(c);
21288@@ -1717,7 +1720,7 @@ void mcheck_cpu_init(struct cpuinfo_x86 *c)
21289 */
21290
21291 static DEFINE_SPINLOCK(mce_chrdev_state_lock);
21292-static int mce_chrdev_open_count; /* #times opened */
21293+static local_t mce_chrdev_open_count; /* #times opened */
21294 static int mce_chrdev_open_exclu; /* already open exclusive? */
21295
21296 static int mce_chrdev_open(struct inode *inode, struct file *file)
21297@@ -1725,7 +1728,7 @@ static int mce_chrdev_open(struct inode *inode, struct file *file)
21298 spin_lock(&mce_chrdev_state_lock);
21299
21300 if (mce_chrdev_open_exclu ||
21301- (mce_chrdev_open_count && (file->f_flags & O_EXCL))) {
21302+ (local_read(&mce_chrdev_open_count) && (file->f_flags & O_EXCL))) {
21303 spin_unlock(&mce_chrdev_state_lock);
21304
21305 return -EBUSY;
21306@@ -1733,7 +1736,7 @@ static int mce_chrdev_open(struct inode *inode, struct file *file)
21307
21308 if (file->f_flags & O_EXCL)
21309 mce_chrdev_open_exclu = 1;
21310- mce_chrdev_open_count++;
21311+ local_inc(&mce_chrdev_open_count);
21312
21313 spin_unlock(&mce_chrdev_state_lock);
21314
21315@@ -1744,7 +1747,7 @@ static int mce_chrdev_release(struct inode *inode, struct file *file)
21316 {
21317 spin_lock(&mce_chrdev_state_lock);
21318
21319- mce_chrdev_open_count--;
21320+ local_dec(&mce_chrdev_open_count);
21321 mce_chrdev_open_exclu = 0;
21322
21323 spin_unlock(&mce_chrdev_state_lock);
21324@@ -2420,7 +2423,7 @@ static __init void mce_init_banks(void)
21325
21326 for (i = 0; i < mca_cfg.banks; i++) {
21327 struct mce_bank *b = &mce_banks[i];
21328- struct device_attribute *a = &b->attr;
21329+ device_attribute_no_const *a = &b->attr;
21330
21331 sysfs_attr_init(&a->attr);
21332 a->attr.name = b->attrname;
21333@@ -2492,7 +2495,7 @@ struct dentry *mce_get_debugfs_dir(void)
21334 static void mce_reset(void)
21335 {
21336 cpu_missing = 0;
21337- atomic_set(&mce_fake_paniced, 0);
21338+ atomic_set_unchecked(&mce_fake_paniced, 0);
21339 atomic_set(&mce_executing, 0);
21340 atomic_set(&mce_callin, 0);
21341 atomic_set(&global_nwo, 0);
21342diff --git a/arch/x86/kernel/cpu/mcheck/p5.c b/arch/x86/kernel/cpu/mcheck/p5.c
21343index a304298..49b6d06 100644
21344--- a/arch/x86/kernel/cpu/mcheck/p5.c
21345+++ b/arch/x86/kernel/cpu/mcheck/p5.c
21346@@ -10,6 +10,7 @@
21347 #include <asm/processor.h>
21348 #include <asm/mce.h>
21349 #include <asm/msr.h>
21350+#include <asm/pgtable.h>
21351
21352 /* By default disabled */
21353 int mce_p5_enabled __read_mostly;
21354@@ -48,7 +49,9 @@ void intel_p5_mcheck_init(struct cpuinfo_x86 *c)
21355 if (!cpu_has(c, X86_FEATURE_MCE))
21356 return;
21357
21358+ pax_open_kernel();
21359 machine_check_vector = pentium_machine_check;
21360+ pax_close_kernel();
21361 /* Make sure the vector pointer is visible before we enable MCEs: */
21362 wmb();
21363
21364diff --git a/arch/x86/kernel/cpu/mcheck/winchip.c b/arch/x86/kernel/cpu/mcheck/winchip.c
21365index 7dc5564..1273569 100644
21366--- a/arch/x86/kernel/cpu/mcheck/winchip.c
21367+++ b/arch/x86/kernel/cpu/mcheck/winchip.c
21368@@ -9,6 +9,7 @@
21369 #include <asm/processor.h>
21370 #include <asm/mce.h>
21371 #include <asm/msr.h>
21372+#include <asm/pgtable.h>
21373
21374 /* Machine check handler for WinChip C6: */
21375 static void winchip_machine_check(struct pt_regs *regs, long error_code)
21376@@ -22,7 +23,9 @@ void winchip_mcheck_init(struct cpuinfo_x86 *c)
21377 {
21378 u32 lo, hi;
21379
21380+ pax_open_kernel();
21381 machine_check_vector = winchip_machine_check;
21382+ pax_close_kernel();
21383 /* Make sure the vector pointer is visible before we enable MCEs: */
21384 wmb();
21385
21386diff --git a/arch/x86/kernel/cpu/microcode/core.c b/arch/x86/kernel/cpu/microcode/core.c
21387index 15c9876..0a43909 100644
21388--- a/arch/x86/kernel/cpu/microcode/core.c
21389+++ b/arch/x86/kernel/cpu/microcode/core.c
21390@@ -513,7 +513,7 @@ mc_cpu_callback(struct notifier_block *nb, unsigned long action, void *hcpu)
21391 return NOTIFY_OK;
21392 }
21393
21394-static struct notifier_block __refdata mc_cpu_notifier = {
21395+static struct notifier_block mc_cpu_notifier = {
21396 .notifier_call = mc_cpu_callback,
21397 };
21398
21399diff --git a/arch/x86/kernel/cpu/microcode/intel.c b/arch/x86/kernel/cpu/microcode/intel.c
21400index a276fa7..e66810f 100644
21401--- a/arch/x86/kernel/cpu/microcode/intel.c
21402+++ b/arch/x86/kernel/cpu/microcode/intel.c
21403@@ -293,13 +293,13 @@ static enum ucode_state request_microcode_fw(int cpu, struct device *device,
21404
21405 static int get_ucode_user(void *to, const void *from, size_t n)
21406 {
21407- return copy_from_user(to, from, n);
21408+ return copy_from_user(to, (const void __force_user *)from, n);
21409 }
21410
21411 static enum ucode_state
21412 request_microcode_user(int cpu, const void __user *buf, size_t size)
21413 {
21414- return generic_load_microcode(cpu, (void *)buf, size, &get_ucode_user);
21415+ return generic_load_microcode(cpu, (__force_kernel void *)buf, size, &get_ucode_user);
21416 }
21417
21418 static void microcode_fini_cpu(int cpu)
21419diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c
21420index f961de9..8a9d332 100644
21421--- a/arch/x86/kernel/cpu/mtrr/main.c
21422+++ b/arch/x86/kernel/cpu/mtrr/main.c
21423@@ -66,7 +66,7 @@ static DEFINE_MUTEX(mtrr_mutex);
21424 u64 size_or_mask, size_and_mask;
21425 static bool mtrr_aps_delayed_init;
21426
21427-static const struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM];
21428+static const struct mtrr_ops *mtrr_ops[X86_VENDOR_NUM] __read_only;
21429
21430 const struct mtrr_ops *mtrr_if;
21431
21432diff --git a/arch/x86/kernel/cpu/mtrr/mtrr.h b/arch/x86/kernel/cpu/mtrr/mtrr.h
21433index df5e41f..816c719 100644
21434--- a/arch/x86/kernel/cpu/mtrr/mtrr.h
21435+++ b/arch/x86/kernel/cpu/mtrr/mtrr.h
21436@@ -25,7 +25,7 @@ struct mtrr_ops {
21437 int (*validate_add_page)(unsigned long base, unsigned long size,
21438 unsigned int type);
21439 int (*have_wrcomb)(void);
21440-};
21441+} __do_const;
21442
21443 extern int generic_get_free_region(unsigned long base, unsigned long size,
21444 int replace_reg);
21445diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
21446index ae407f7..39c5b00 100644
21447--- a/arch/x86/kernel/cpu/perf_event.c
21448+++ b/arch/x86/kernel/cpu/perf_event.c
21449@@ -1367,7 +1367,7 @@ static void __init pmu_check_apic(void)
21450 pr_info("no hardware sampling interrupt available.\n");
21451 }
21452
21453-static struct attribute_group x86_pmu_format_group = {
21454+static attribute_group_no_const x86_pmu_format_group = {
21455 .name = "format",
21456 .attrs = NULL,
21457 };
21458@@ -1466,7 +1466,7 @@ static struct attribute *events_attr[] = {
21459 NULL,
21460 };
21461
21462-static struct attribute_group x86_pmu_events_group = {
21463+static attribute_group_no_const x86_pmu_events_group = {
21464 .name = "events",
21465 .attrs = events_attr,
21466 };
21467@@ -1990,7 +1990,7 @@ static unsigned long get_segment_base(unsigned int segment)
21468 if (idx > GDT_ENTRIES)
21469 return 0;
21470
21471- desc = __this_cpu_ptr(&gdt_page.gdt[0]);
21472+ desc = get_cpu_gdt_table(smp_processor_id());
21473 }
21474
21475 return get_desc_base(desc + idx);
21476@@ -2080,7 +2080,7 @@ perf_callchain_user(struct perf_callchain_entry *entry, struct pt_regs *regs)
21477 break;
21478
21479 perf_callchain_store(entry, frame.return_address);
21480- fp = frame.next_frame;
21481+ fp = (const void __force_user *)frame.next_frame;
21482 }
21483 }
21484
21485diff --git a/arch/x86/kernel/cpu/perf_event_amd_iommu.c b/arch/x86/kernel/cpu/perf_event_amd_iommu.c
21486index 639d128..e92d7e5 100644
21487--- a/arch/x86/kernel/cpu/perf_event_amd_iommu.c
21488+++ b/arch/x86/kernel/cpu/perf_event_amd_iommu.c
21489@@ -405,7 +405,7 @@ static void perf_iommu_del(struct perf_event *event, int flags)
21490 static __init int _init_events_attrs(struct perf_amd_iommu *perf_iommu)
21491 {
21492 struct attribute **attrs;
21493- struct attribute_group *attr_group;
21494+ attribute_group_no_const *attr_group;
21495 int i = 0, j;
21496
21497 while (amd_iommu_v2_event_descs[i].attr.attr.name)
21498diff --git a/arch/x86/kernel/cpu/perf_event_intel.c b/arch/x86/kernel/cpu/perf_event_intel.c
21499index adb02aa..9688c02 100644
21500--- a/arch/x86/kernel/cpu/perf_event_intel.c
21501+++ b/arch/x86/kernel/cpu/perf_event_intel.c
21502@@ -2308,10 +2308,10 @@ __init int intel_pmu_init(void)
21503 x86_pmu.num_counters_fixed = max((int)edx.split.num_counters_fixed, 3);
21504
21505 if (boot_cpu_has(X86_FEATURE_PDCM)) {
21506- u64 capabilities;
21507+ u64 capabilities = x86_pmu.intel_cap.capabilities;
21508
21509- rdmsrl(MSR_IA32_PERF_CAPABILITIES, capabilities);
21510- x86_pmu.intel_cap.capabilities = capabilities;
21511+ if (rdmsrl_safe(MSR_IA32_PERF_CAPABILITIES, &x86_pmu.intel_cap.capabilities))
21512+ x86_pmu.intel_cap.capabilities = capabilities;
21513 }
21514
21515 intel_ds_init();
21516diff --git a/arch/x86/kernel/cpu/perf_event_intel_rapl.c b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
21517index 619f769..d510008 100644
21518--- a/arch/x86/kernel/cpu/perf_event_intel_rapl.c
21519+++ b/arch/x86/kernel/cpu/perf_event_intel_rapl.c
21520@@ -449,7 +449,7 @@ static struct attribute *rapl_events_hsw_attr[] = {
21521 NULL,
21522 };
21523
21524-static struct attribute_group rapl_pmu_events_group = {
21525+static attribute_group_no_const rapl_pmu_events_group __read_only = {
21526 .name = "events",
21527 .attrs = NULL, /* patched at runtime */
21528 };
21529diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
21530index 65bbbea..1438d9e 100644
21531--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c
21532+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c
21533@@ -3693,7 +3693,7 @@ static void __init uncore_types_exit(struct intel_uncore_type **types)
21534 static int __init uncore_type_init(struct intel_uncore_type *type)
21535 {
21536 struct intel_uncore_pmu *pmus;
21537- struct attribute_group *attr_group;
21538+ attribute_group_no_const *attr_group;
21539 struct attribute **attrs;
21540 int i, j;
21541
21542diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.h b/arch/x86/kernel/cpu/perf_event_intel_uncore.h
21543index 90236f0..54cb20d 100644
21544--- a/arch/x86/kernel/cpu/perf_event_intel_uncore.h
21545+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.h
21546@@ -503,7 +503,7 @@ struct intel_uncore_box {
21547 struct uncore_event_desc {
21548 struct kobj_attribute attr;
21549 const char *config;
21550-};
21551+} __do_const;
21552
21553 #define INTEL_UNCORE_EVENT_DESC(_name, _config) \
21554 { \
21555diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
21556index 3225ae6c..ee3c6db 100644
21557--- a/arch/x86/kernel/cpuid.c
21558+++ b/arch/x86/kernel/cpuid.c
21559@@ -170,7 +170,7 @@ static int cpuid_class_cpu_callback(struct notifier_block *nfb,
21560 return notifier_from_errno(err);
21561 }
21562
21563-static struct notifier_block __refdata cpuid_class_cpu_notifier =
21564+static struct notifier_block cpuid_class_cpu_notifier =
21565 {
21566 .notifier_call = cpuid_class_cpu_callback,
21567 };
21568diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
21569index 507de80..ebaae2a 100644
21570--- a/arch/x86/kernel/crash.c
21571+++ b/arch/x86/kernel/crash.c
21572@@ -58,7 +58,7 @@ static void kdump_nmi_callback(int cpu, struct pt_regs *regs)
21573 #ifdef CONFIG_X86_32
21574 struct pt_regs fixed_regs;
21575
21576- if (!user_mode_vm(regs)) {
21577+ if (!user_mode(regs)) {
21578 crash_fixup_ss_esp(&fixed_regs, regs);
21579 regs = &fixed_regs;
21580 }
21581diff --git a/arch/x86/kernel/crash_dump_64.c b/arch/x86/kernel/crash_dump_64.c
21582index afa64ad..dce67dd 100644
21583--- a/arch/x86/kernel/crash_dump_64.c
21584+++ b/arch/x86/kernel/crash_dump_64.c
21585@@ -36,7 +36,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf,
21586 return -ENOMEM;
21587
21588 if (userbuf) {
21589- if (copy_to_user(buf, vaddr + offset, csize)) {
21590+ if (copy_to_user((char __force_user *)buf, vaddr + offset, csize)) {
21591 iounmap(vaddr);
21592 return -EFAULT;
21593 }
21594diff --git a/arch/x86/kernel/doublefault.c b/arch/x86/kernel/doublefault.c
21595index f6dfd93..892ade4 100644
21596--- a/arch/x86/kernel/doublefault.c
21597+++ b/arch/x86/kernel/doublefault.c
21598@@ -12,7 +12,7 @@
21599
21600 #define DOUBLEFAULT_STACKSIZE (1024)
21601 static unsigned long doublefault_stack[DOUBLEFAULT_STACKSIZE];
21602-#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE)
21603+#define STACK_START (unsigned long)(doublefault_stack+DOUBLEFAULT_STACKSIZE-2)
21604
21605 #define ptr_ok(x) ((x) > PAGE_OFFSET && (x) < PAGE_OFFSET + MAXMEM)
21606
21607@@ -22,7 +22,7 @@ static void doublefault_fn(void)
21608 unsigned long gdt, tss;
21609
21610 native_store_gdt(&gdt_desc);
21611- gdt = gdt_desc.address;
21612+ gdt = (unsigned long)gdt_desc.address;
21613
21614 printk(KERN_EMERG "PANIC: double fault, gdt at %08lx [%d bytes]\n", gdt, gdt_desc.size);
21615
21616@@ -59,10 +59,10 @@ struct tss_struct doublefault_tss __cacheline_aligned = {
21617 /* 0x2 bit is always set */
21618 .flags = X86_EFLAGS_SF | 0x2,
21619 .sp = STACK_START,
21620- .es = __USER_DS,
21621+ .es = __KERNEL_DS,
21622 .cs = __KERNEL_CS,
21623 .ss = __KERNEL_DS,
21624- .ds = __USER_DS,
21625+ .ds = __KERNEL_DS,
21626 .fs = __KERNEL_PERCPU,
21627
21628 .__cr3 = __pa_nodebug(swapper_pg_dir),
21629diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c
21630index d9c12d3..7858b62 100644
21631--- a/arch/x86/kernel/dumpstack.c
21632+++ b/arch/x86/kernel/dumpstack.c
21633@@ -2,6 +2,9 @@
21634 * Copyright (C) 1991, 1992 Linus Torvalds
21635 * Copyright (C) 2000, 2001, 2002 Andi Kleen, SuSE Labs
21636 */
21637+#ifdef CONFIG_GRKERNSEC_HIDESYM
21638+#define __INCLUDED_BY_HIDESYM 1
21639+#endif
21640 #include <linux/kallsyms.h>
21641 #include <linux/kprobes.h>
21642 #include <linux/uaccess.h>
21643@@ -40,16 +43,14 @@ void printk_address(unsigned long address)
21644 static void
21645 print_ftrace_graph_addr(unsigned long addr, void *data,
21646 const struct stacktrace_ops *ops,
21647- struct thread_info *tinfo, int *graph)
21648+ struct task_struct *task, int *graph)
21649 {
21650- struct task_struct *task;
21651 unsigned long ret_addr;
21652 int index;
21653
21654 if (addr != (unsigned long)return_to_handler)
21655 return;
21656
21657- task = tinfo->task;
21658 index = task->curr_ret_stack;
21659
21660 if (!task->ret_stack || index < *graph)
21661@@ -66,7 +67,7 @@ print_ftrace_graph_addr(unsigned long addr, void *data,
21662 static inline void
21663 print_ftrace_graph_addr(unsigned long addr, void *data,
21664 const struct stacktrace_ops *ops,
21665- struct thread_info *tinfo, int *graph)
21666+ struct task_struct *task, int *graph)
21667 { }
21668 #endif
21669
21670@@ -77,10 +78,8 @@ print_ftrace_graph_addr(unsigned long addr, void *data,
21671 * severe exception (double fault, nmi, stack fault, debug, mce) hardware stack
21672 */
21673
21674-static inline int valid_stack_ptr(struct thread_info *tinfo,
21675- void *p, unsigned int size, void *end)
21676+static inline int valid_stack_ptr(void *t, void *p, unsigned int size, void *end)
21677 {
21678- void *t = tinfo;
21679 if (end) {
21680 if (p < end && p >= (end-THREAD_SIZE))
21681 return 1;
21682@@ -91,14 +90,14 @@ static inline int valid_stack_ptr(struct thread_info *tinfo,
21683 }
21684
21685 unsigned long
21686-print_context_stack(struct thread_info *tinfo,
21687+print_context_stack(struct task_struct *task, void *stack_start,
21688 unsigned long *stack, unsigned long bp,
21689 const struct stacktrace_ops *ops, void *data,
21690 unsigned long *end, int *graph)
21691 {
21692 struct stack_frame *frame = (struct stack_frame *)bp;
21693
21694- while (valid_stack_ptr(tinfo, stack, sizeof(*stack), end)) {
21695+ while (valid_stack_ptr(stack_start, stack, sizeof(*stack), end)) {
21696 unsigned long addr;
21697
21698 addr = *stack;
21699@@ -110,7 +109,7 @@ print_context_stack(struct thread_info *tinfo,
21700 } else {
21701 ops->address(data, addr, 0);
21702 }
21703- print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
21704+ print_ftrace_graph_addr(addr, data, ops, task, graph);
21705 }
21706 stack++;
21707 }
21708@@ -119,7 +118,7 @@ print_context_stack(struct thread_info *tinfo,
21709 EXPORT_SYMBOL_GPL(print_context_stack);
21710
21711 unsigned long
21712-print_context_stack_bp(struct thread_info *tinfo,
21713+print_context_stack_bp(struct task_struct *task, void *stack_start,
21714 unsigned long *stack, unsigned long bp,
21715 const struct stacktrace_ops *ops, void *data,
21716 unsigned long *end, int *graph)
21717@@ -127,7 +126,7 @@ print_context_stack_bp(struct thread_info *tinfo,
21718 struct stack_frame *frame = (struct stack_frame *)bp;
21719 unsigned long *ret_addr = &frame->return_address;
21720
21721- while (valid_stack_ptr(tinfo, ret_addr, sizeof(*ret_addr), end)) {
21722+ while (valid_stack_ptr(stack_start, ret_addr, sizeof(*ret_addr), end)) {
21723 unsigned long addr = *ret_addr;
21724
21725 if (!__kernel_text_address(addr))
21726@@ -136,7 +135,7 @@ print_context_stack_bp(struct thread_info *tinfo,
21727 ops->address(data, addr, 1);
21728 frame = frame->next_frame;
21729 ret_addr = &frame->return_address;
21730- print_ftrace_graph_addr(addr, data, ops, tinfo, graph);
21731+ print_ftrace_graph_addr(addr, data, ops, task, graph);
21732 }
21733
21734 return (unsigned long)frame;
21735@@ -155,7 +154,7 @@ static int print_trace_stack(void *data, char *name)
21736 static void print_trace_address(void *data, unsigned long addr, int reliable)
21737 {
21738 touch_nmi_watchdog();
21739- printk(data);
21740+ printk("%s", (char *)data);
21741 printk_stack_address(addr, reliable);
21742 }
21743
21744@@ -224,6 +223,8 @@ unsigned __kprobes long oops_begin(void)
21745 }
21746 EXPORT_SYMBOL_GPL(oops_begin);
21747
21748+extern void gr_handle_kernel_exploit(void);
21749+
21750 void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr)
21751 {
21752 if (regs && kexec_should_crash(current))
21753@@ -245,7 +246,10 @@ void __kprobes oops_end(unsigned long flags, struct pt_regs *regs, int signr)
21754 panic("Fatal exception in interrupt");
21755 if (panic_on_oops)
21756 panic("Fatal exception");
21757- do_exit(signr);
21758+
21759+ gr_handle_kernel_exploit();
21760+
21761+ do_group_exit(signr);
21762 }
21763
21764 int __kprobes __die(const char *str, struct pt_regs *regs, long err)
21765@@ -273,7 +277,7 @@ int __kprobes __die(const char *str, struct pt_regs *regs, long err)
21766 print_modules();
21767 show_regs(regs);
21768 #ifdef CONFIG_X86_32
21769- if (user_mode_vm(regs)) {
21770+ if (user_mode(regs)) {
21771 sp = regs->sp;
21772 ss = regs->ss & 0xffff;
21773 } else {
21774@@ -301,7 +305,7 @@ void die(const char *str, struct pt_regs *regs, long err)
21775 unsigned long flags = oops_begin();
21776 int sig = SIGSEGV;
21777
21778- if (!user_mode_vm(regs))
21779+ if (!user_mode(regs))
21780 report_bug(regs->ip, regs);
21781
21782 if (__die(str, regs, err))
21783diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c
21784index 5abd4cd..c65733b 100644
21785--- a/arch/x86/kernel/dumpstack_32.c
21786+++ b/arch/x86/kernel/dumpstack_32.c
21787@@ -61,15 +61,14 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
21788 bp = stack_frame(task, regs);
21789
21790 for (;;) {
21791- struct thread_info *context;
21792+ void *stack_start = (void *)((unsigned long)stack & ~(THREAD_SIZE-1));
21793 void *end_stack;
21794
21795 end_stack = is_hardirq_stack(stack, cpu);
21796 if (!end_stack)
21797 end_stack = is_softirq_stack(stack, cpu);
21798
21799- context = task_thread_info(task);
21800- bp = ops->walk_stack(context, stack, bp, ops, data,
21801+ bp = ops->walk_stack(task, stack_start, stack, bp, ops, data,
21802 end_stack, &graph);
21803
21804 /* Stop if not on irq stack */
21805@@ -123,27 +122,28 @@ void show_regs(struct pt_regs *regs)
21806 int i;
21807
21808 show_regs_print_info(KERN_EMERG);
21809- __show_regs(regs, !user_mode_vm(regs));
21810+ __show_regs(regs, !user_mode(regs));
21811
21812 /*
21813 * When in-kernel, we also print out the stack and code at the
21814 * time of the fault..
21815 */
21816- if (!user_mode_vm(regs)) {
21817+ if (!user_mode(regs)) {
21818 unsigned int code_prologue = code_bytes * 43 / 64;
21819 unsigned int code_len = code_bytes;
21820 unsigned char c;
21821 u8 *ip;
21822+ unsigned long cs_base = get_desc_base(&get_cpu_gdt_table(0)[(0xffff & regs->cs) >> 3]);
21823
21824 pr_emerg("Stack:\n");
21825 show_stack_log_lvl(NULL, regs, &regs->sp, 0, KERN_EMERG);
21826
21827 pr_emerg("Code:");
21828
21829- ip = (u8 *)regs->ip - code_prologue;
21830+ ip = (u8 *)regs->ip - code_prologue + cs_base;
21831 if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) {
21832 /* try starting at IP */
21833- ip = (u8 *)regs->ip;
21834+ ip = (u8 *)regs->ip + cs_base;
21835 code_len = code_len - code_prologue + 1;
21836 }
21837 for (i = 0; i < code_len; i++, ip++) {
21838@@ -152,7 +152,7 @@ void show_regs(struct pt_regs *regs)
21839 pr_cont(" Bad EIP value.");
21840 break;
21841 }
21842- if (ip == (u8 *)regs->ip)
21843+ if (ip == (u8 *)regs->ip + cs_base)
21844 pr_cont(" <%02x>", c);
21845 else
21846 pr_cont(" %02x", c);
21847@@ -165,6 +165,7 @@ int is_valid_bugaddr(unsigned long ip)
21848 {
21849 unsigned short ud2;
21850
21851+ ip = ktla_ktva(ip);
21852 if (ip < PAGE_OFFSET)
21853 return 0;
21854 if (probe_kernel_address((unsigned short *)ip, ud2))
21855@@ -172,3 +173,15 @@ int is_valid_bugaddr(unsigned long ip)
21856
21857 return ud2 == 0x0b0f;
21858 }
21859+
21860+#if defined(CONFIG_PAX_MEMORY_STACKLEAK) || defined(CONFIG_PAX_USERCOPY)
21861+void pax_check_alloca(unsigned long size)
21862+{
21863+ unsigned long sp = (unsigned long)&sp, stack_left;
21864+
21865+ /* all kernel stacks are of the same size */
21866+ stack_left = sp & (THREAD_SIZE - 1);
21867+ BUG_ON(stack_left < 256 || size >= stack_left - 256);
21868+}
21869+EXPORT_SYMBOL(pax_check_alloca);
21870+#endif
21871diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
21872index 1abcb50..6c8d702 100644
21873--- a/arch/x86/kernel/dumpstack_64.c
21874+++ b/arch/x86/kernel/dumpstack_64.c
21875@@ -154,12 +154,12 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
21876 const struct stacktrace_ops *ops, void *data)
21877 {
21878 const unsigned cpu = get_cpu();
21879- struct thread_info *tinfo;
21880 unsigned long *irq_stack = (unsigned long *)per_cpu(irq_stack_ptr, cpu);
21881 unsigned long dummy;
21882 unsigned used = 0;
21883 int graph = 0;
21884 int done = 0;
21885+ void *stack_start;
21886
21887 if (!task)
21888 task = current;
21889@@ -180,7 +180,6 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
21890 * current stack address. If the stacks consist of nested
21891 * exceptions
21892 */
21893- tinfo = task_thread_info(task);
21894 while (!done) {
21895 unsigned long *stack_end;
21896 enum stack_type stype;
21897@@ -203,7 +202,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
21898 if (ops->stack(data, id) < 0)
21899 break;
21900
21901- bp = ops->walk_stack(tinfo, stack, bp, ops,
21902+ bp = ops->walk_stack(task, stack_end - EXCEPTION_STKSZ, stack, bp, ops,
21903 data, stack_end, &graph);
21904 ops->stack(data, "<EOE>");
21905 /*
21906@@ -211,6 +210,8 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
21907 * second-to-last pointer (index -2 to end) in the
21908 * exception stack:
21909 */
21910+ if ((u16)stack_end[-1] != __KERNEL_DS)
21911+ goto out;
21912 stack = (unsigned long *) stack_end[-2];
21913 done = 0;
21914 break;
21915@@ -219,7 +220,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
21916
21917 if (ops->stack(data, "IRQ") < 0)
21918 break;
21919- bp = ops->walk_stack(tinfo, stack, bp,
21920+ bp = ops->walk_stack(task, irq_stack, stack, bp,
21921 ops, data, stack_end, &graph);
21922 /*
21923 * We link to the next stack (which would be
21924@@ -241,7 +242,9 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs,
21925 /*
21926 * This handles the process stack:
21927 */
21928- bp = ops->walk_stack(tinfo, stack, bp, ops, data, NULL, &graph);
21929+ stack_start = (void *)((unsigned long)stack & ~(THREAD_SIZE-1));
21930+ bp = ops->walk_stack(task, stack_start, stack, bp, ops, data, NULL, &graph);
21931+out:
21932 put_cpu();
21933 }
21934 EXPORT_SYMBOL(dump_trace);
21935@@ -350,3 +353,50 @@ int is_valid_bugaddr(unsigned long ip)
21936
21937 return ud2 == 0x0b0f;
21938 }
21939+
21940+#if defined(CONFIG_PAX_MEMORY_STACKLEAK) || defined(CONFIG_PAX_USERCOPY)
21941+void pax_check_alloca(unsigned long size)
21942+{
21943+ unsigned long sp = (unsigned long)&sp, stack_start, stack_end;
21944+ unsigned cpu, used;
21945+ char *id;
21946+
21947+ /* check the process stack first */
21948+ stack_start = (unsigned long)task_stack_page(current);
21949+ stack_end = stack_start + THREAD_SIZE;
21950+ if (likely(stack_start <= sp && sp < stack_end)) {
21951+ unsigned long stack_left = sp & (THREAD_SIZE - 1);
21952+ BUG_ON(stack_left < 256 || size >= stack_left - 256);
21953+ return;
21954+ }
21955+
21956+ cpu = get_cpu();
21957+
21958+ /* check the irq stacks */
21959+ stack_end = (unsigned long)per_cpu(irq_stack_ptr, cpu);
21960+ stack_start = stack_end - IRQ_STACK_SIZE;
21961+ if (stack_start <= sp && sp < stack_end) {
21962+ unsigned long stack_left = sp & (IRQ_STACK_SIZE - 1);
21963+ put_cpu();
21964+ BUG_ON(stack_left < 256 || size >= stack_left - 256);
21965+ return;
21966+ }
21967+
21968+ /* check the exception stacks */
21969+ used = 0;
21970+ stack_end = (unsigned long)in_exception_stack(cpu, sp, &used, &id);
21971+ stack_start = stack_end - EXCEPTION_STKSZ;
21972+ if (stack_end && stack_start <= sp && sp < stack_end) {
21973+ unsigned long stack_left = sp & (EXCEPTION_STKSZ - 1);
21974+ put_cpu();
21975+ BUG_ON(stack_left < 256 || size >= stack_left - 256);
21976+ return;
21977+ }
21978+
21979+ put_cpu();
21980+
21981+ /* unknown stack */
21982+ BUG();
21983+}
21984+EXPORT_SYMBOL(pax_check_alloca);
21985+#endif
21986diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
21987index 988c00a..4f673b6 100644
21988--- a/arch/x86/kernel/e820.c
21989+++ b/arch/x86/kernel/e820.c
21990@@ -803,8 +803,8 @@ unsigned long __init e820_end_of_low_ram_pfn(void)
21991
21992 static void early_panic(char *msg)
21993 {
21994- early_printk(msg);
21995- panic(msg);
21996+ early_printk("%s", msg);
21997+ panic("%s", msg);
21998 }
21999
22000 static int userdef __initdata;
22001diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c
22002index 01d1c18..8073693 100644
22003--- a/arch/x86/kernel/early_printk.c
22004+++ b/arch/x86/kernel/early_printk.c
22005@@ -7,6 +7,7 @@
22006 #include <linux/pci_regs.h>
22007 #include <linux/pci_ids.h>
22008 #include <linux/errno.h>
22009+#include <linux/sched.h>
22010 #include <asm/io.h>
22011 #include <asm/processor.h>
22012 #include <asm/fcntl.h>
22013diff --git a/arch/x86/kernel/entry_32.S b/arch/x86/kernel/entry_32.S
22014index 6491353..a918952 100644
22015--- a/arch/x86/kernel/entry_32.S
22016+++ b/arch/x86/kernel/entry_32.S
22017@@ -177,13 +177,153 @@
22018 /*CFI_REL_OFFSET gs, PT_GS*/
22019 .endm
22020 .macro SET_KERNEL_GS reg
22021+
22022+#ifdef CONFIG_CC_STACKPROTECTOR
22023 movl $(__KERNEL_STACK_CANARY), \reg
22024+#elif defined(CONFIG_PAX_MEMORY_UDEREF)
22025+ movl $(__USER_DS), \reg
22026+#else
22027+ xorl \reg, \reg
22028+#endif
22029+
22030 movl \reg, %gs
22031 .endm
22032
22033 #endif /* CONFIG_X86_32_LAZY_GS */
22034
22035-.macro SAVE_ALL
22036+.macro pax_enter_kernel
22037+#ifdef CONFIG_PAX_KERNEXEC
22038+ call pax_enter_kernel
22039+#endif
22040+.endm
22041+
22042+.macro pax_exit_kernel
22043+#ifdef CONFIG_PAX_KERNEXEC
22044+ call pax_exit_kernel
22045+#endif
22046+.endm
22047+
22048+#ifdef CONFIG_PAX_KERNEXEC
22049+ENTRY(pax_enter_kernel)
22050+#ifdef CONFIG_PARAVIRT
22051+ pushl %eax
22052+ pushl %ecx
22053+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0)
22054+ mov %eax, %esi
22055+#else
22056+ mov %cr0, %esi
22057+#endif
22058+ bts $16, %esi
22059+ jnc 1f
22060+ mov %cs, %esi
22061+ cmp $__KERNEL_CS, %esi
22062+ jz 3f
22063+ ljmp $__KERNEL_CS, $3f
22064+1: ljmp $__KERNEXEC_KERNEL_CS, $2f
22065+2:
22066+#ifdef CONFIG_PARAVIRT
22067+ mov %esi, %eax
22068+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0)
22069+#else
22070+ mov %esi, %cr0
22071+#endif
22072+3:
22073+#ifdef CONFIG_PARAVIRT
22074+ popl %ecx
22075+ popl %eax
22076+#endif
22077+ ret
22078+ENDPROC(pax_enter_kernel)
22079+
22080+ENTRY(pax_exit_kernel)
22081+#ifdef CONFIG_PARAVIRT
22082+ pushl %eax
22083+ pushl %ecx
22084+#endif
22085+ mov %cs, %esi
22086+ cmp $__KERNEXEC_KERNEL_CS, %esi
22087+ jnz 2f
22088+#ifdef CONFIG_PARAVIRT
22089+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0);
22090+ mov %eax, %esi
22091+#else
22092+ mov %cr0, %esi
22093+#endif
22094+ btr $16, %esi
22095+ ljmp $__KERNEL_CS, $1f
22096+1:
22097+#ifdef CONFIG_PARAVIRT
22098+ mov %esi, %eax
22099+ call PARA_INDIRECT(pv_cpu_ops+PV_CPU_write_cr0);
22100+#else
22101+ mov %esi, %cr0
22102+#endif
22103+2:
22104+#ifdef CONFIG_PARAVIRT
22105+ popl %ecx
22106+ popl %eax
22107+#endif
22108+ ret
22109+ENDPROC(pax_exit_kernel)
22110+#endif
22111+
22112+ .macro pax_erase_kstack
22113+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
22114+ call pax_erase_kstack
22115+#endif
22116+ .endm
22117+
22118+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
22119+/*
22120+ * ebp: thread_info
22121+ */
22122+ENTRY(pax_erase_kstack)
22123+ pushl %edi
22124+ pushl %ecx
22125+ pushl %eax
22126+
22127+ mov TI_lowest_stack(%ebp), %edi
22128+ mov $-0xBEEF, %eax
22129+ std
22130+
22131+1: mov %edi, %ecx
22132+ and $THREAD_SIZE_asm - 1, %ecx
22133+ shr $2, %ecx
22134+ repne scasl
22135+ jecxz 2f
22136+
22137+ cmp $2*16, %ecx
22138+ jc 2f
22139+
22140+ mov $2*16, %ecx
22141+ repe scasl
22142+ jecxz 2f
22143+ jne 1b
22144+
22145+2: cld
22146+ mov %esp, %ecx
22147+ sub %edi, %ecx
22148+
22149+ cmp $THREAD_SIZE_asm, %ecx
22150+ jb 3f
22151+ ud2
22152+3:
22153+
22154+ shr $2, %ecx
22155+ rep stosl
22156+
22157+ mov TI_task_thread_sp0(%ebp), %edi
22158+ sub $128, %edi
22159+ mov %edi, TI_lowest_stack(%ebp)
22160+
22161+ popl %eax
22162+ popl %ecx
22163+ popl %edi
22164+ ret
22165+ENDPROC(pax_erase_kstack)
22166+#endif
22167+
22168+.macro __SAVE_ALL _DS
22169 cld
22170 PUSH_GS
22171 pushl_cfi %fs
22172@@ -206,7 +346,7 @@
22173 CFI_REL_OFFSET ecx, 0
22174 pushl_cfi %ebx
22175 CFI_REL_OFFSET ebx, 0
22176- movl $(__USER_DS), %edx
22177+ movl $\_DS, %edx
22178 movl %edx, %ds
22179 movl %edx, %es
22180 movl $(__KERNEL_PERCPU), %edx
22181@@ -214,6 +354,15 @@
22182 SET_KERNEL_GS %edx
22183 .endm
22184
22185+.macro SAVE_ALL
22186+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
22187+ __SAVE_ALL __KERNEL_DS
22188+ pax_enter_kernel
22189+#else
22190+ __SAVE_ALL __USER_DS
22191+#endif
22192+.endm
22193+
22194 .macro RESTORE_INT_REGS
22195 popl_cfi %ebx
22196 CFI_RESTORE ebx
22197@@ -297,7 +446,7 @@ ENTRY(ret_from_fork)
22198 popfl_cfi
22199 jmp syscall_exit
22200 CFI_ENDPROC
22201-END(ret_from_fork)
22202+ENDPROC(ret_from_fork)
22203
22204 ENTRY(ret_from_kernel_thread)
22205 CFI_STARTPROC
22206@@ -344,7 +493,15 @@ ret_from_intr:
22207 andl $SEGMENT_RPL_MASK, %eax
22208 #endif
22209 cmpl $USER_RPL, %eax
22210+
22211+#ifdef CONFIG_PAX_KERNEXEC
22212+ jae resume_userspace
22213+
22214+ pax_exit_kernel
22215+ jmp resume_kernel
22216+#else
22217 jb resume_kernel # not returning to v8086 or userspace
22218+#endif
22219
22220 ENTRY(resume_userspace)
22221 LOCKDEP_SYS_EXIT
22222@@ -356,8 +513,8 @@ ENTRY(resume_userspace)
22223 andl $_TIF_WORK_MASK, %ecx # is there any work to be done on
22224 # int/exception return?
22225 jne work_pending
22226- jmp restore_all
22227-END(ret_from_exception)
22228+ jmp restore_all_pax
22229+ENDPROC(ret_from_exception)
22230
22231 #ifdef CONFIG_PREEMPT
22232 ENTRY(resume_kernel)
22233@@ -369,7 +526,7 @@ need_resched:
22234 jz restore_all
22235 call preempt_schedule_irq
22236 jmp need_resched
22237-END(resume_kernel)
22238+ENDPROC(resume_kernel)
22239 #endif
22240 CFI_ENDPROC
22241 /*
22242@@ -403,30 +560,45 @@ sysenter_past_esp:
22243 /*CFI_REL_OFFSET cs, 0*/
22244 /*
22245 * Push current_thread_info()->sysenter_return to the stack.
22246- * A tiny bit of offset fixup is necessary - 4*4 means the 4 words
22247- * pushed above; +8 corresponds to copy_thread's esp0 setting.
22248 */
22249- pushl_cfi ((TI_sysenter_return)-THREAD_SIZE+8+4*4)(%esp)
22250+ pushl_cfi $0
22251 CFI_REL_OFFSET eip, 0
22252
22253 pushl_cfi %eax
22254 SAVE_ALL
22255+ GET_THREAD_INFO(%ebp)
22256+ movl TI_sysenter_return(%ebp),%ebp
22257+ movl %ebp,PT_EIP(%esp)
22258 ENABLE_INTERRUPTS(CLBR_NONE)
22259
22260 /*
22261 * Load the potential sixth argument from user stack.
22262 * Careful about security.
22263 */
22264+ movl PT_OLDESP(%esp),%ebp
22265+
22266+#ifdef CONFIG_PAX_MEMORY_UDEREF
22267+ mov PT_OLDSS(%esp),%ds
22268+1: movl %ds:(%ebp),%ebp
22269+ push %ss
22270+ pop %ds
22271+#else
22272 cmpl $__PAGE_OFFSET-3,%ebp
22273 jae syscall_fault
22274 ASM_STAC
22275 1: movl (%ebp),%ebp
22276 ASM_CLAC
22277+#endif
22278+
22279 movl %ebp,PT_EBP(%esp)
22280 _ASM_EXTABLE(1b,syscall_fault)
22281
22282 GET_THREAD_INFO(%ebp)
22283
22284+#ifdef CONFIG_PAX_RANDKSTACK
22285+ pax_erase_kstack
22286+#endif
22287+
22288 testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp)
22289 jnz sysenter_audit
22290 sysenter_do_call:
22291@@ -442,12 +614,24 @@ sysenter_after_call:
22292 testl $_TIF_ALLWORK_MASK, %ecx
22293 jne sysexit_audit
22294 sysenter_exit:
22295+
22296+#ifdef CONFIG_PAX_RANDKSTACK
22297+ pushl_cfi %eax
22298+ movl %esp, %eax
22299+ call pax_randomize_kstack
22300+ popl_cfi %eax
22301+#endif
22302+
22303+ pax_erase_kstack
22304+
22305 /* if something modifies registers it must also disable sysexit */
22306 movl PT_EIP(%esp), %edx
22307 movl PT_OLDESP(%esp), %ecx
22308 xorl %ebp,%ebp
22309 TRACE_IRQS_ON
22310 1: mov PT_FS(%esp), %fs
22311+2: mov PT_DS(%esp), %ds
22312+3: mov PT_ES(%esp), %es
22313 PTGS_TO_GS
22314 ENABLE_INTERRUPTS_SYSEXIT
22315
22316@@ -464,6 +648,9 @@ sysenter_audit:
22317 movl %eax,%edx /* 2nd arg: syscall number */
22318 movl $AUDIT_ARCH_I386,%eax /* 1st arg: audit arch */
22319 call __audit_syscall_entry
22320+
22321+ pax_erase_kstack
22322+
22323 pushl_cfi %ebx
22324 movl PT_EAX(%esp),%eax /* reload syscall number */
22325 jmp sysenter_do_call
22326@@ -489,10 +676,16 @@ sysexit_audit:
22327
22328 CFI_ENDPROC
22329 .pushsection .fixup,"ax"
22330-2: movl $0,PT_FS(%esp)
22331+4: movl $0,PT_FS(%esp)
22332+ jmp 1b
22333+5: movl $0,PT_DS(%esp)
22334+ jmp 1b
22335+6: movl $0,PT_ES(%esp)
22336 jmp 1b
22337 .popsection
22338- _ASM_EXTABLE(1b,2b)
22339+ _ASM_EXTABLE(1b,4b)
22340+ _ASM_EXTABLE(2b,5b)
22341+ _ASM_EXTABLE(3b,6b)
22342 PTGS_TO_GS_EX
22343 ENDPROC(ia32_sysenter_target)
22344
22345@@ -507,6 +700,11 @@ ENTRY(system_call)
22346 pushl_cfi %eax # save orig_eax
22347 SAVE_ALL
22348 GET_THREAD_INFO(%ebp)
22349+
22350+#ifdef CONFIG_PAX_RANDKSTACK
22351+ pax_erase_kstack
22352+#endif
22353+
22354 # system call tracing in operation / emulation
22355 testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%ebp)
22356 jnz syscall_trace_entry
22357@@ -525,6 +723,15 @@ syscall_exit:
22358 testl $_TIF_ALLWORK_MASK, %ecx # current->work
22359 jne syscall_exit_work
22360
22361+restore_all_pax:
22362+
22363+#ifdef CONFIG_PAX_RANDKSTACK
22364+ movl %esp, %eax
22365+ call pax_randomize_kstack
22366+#endif
22367+
22368+ pax_erase_kstack
22369+
22370 restore_all:
22371 TRACE_IRQS_IRET
22372 restore_all_notrace:
22373@@ -576,14 +783,34 @@ ldt_ss:
22374 * compensating for the offset by changing to the ESPFIX segment with
22375 * a base address that matches for the difference.
22376 */
22377-#define GDT_ESPFIX_SS PER_CPU_VAR(gdt_page) + (GDT_ENTRY_ESPFIX_SS * 8)
22378+#define GDT_ESPFIX_SS (GDT_ENTRY_ESPFIX_SS * 8)(%ebx)
22379 mov %esp, %edx /* load kernel esp */
22380 mov PT_OLDESP(%esp), %eax /* load userspace esp */
22381 mov %dx, %ax /* eax: new kernel esp */
22382 sub %eax, %edx /* offset (low word is 0) */
22383+#ifdef CONFIG_SMP
22384+ movl PER_CPU_VAR(cpu_number), %ebx
22385+ shll $PAGE_SHIFT_asm, %ebx
22386+ addl $cpu_gdt_table, %ebx
22387+#else
22388+ movl $cpu_gdt_table, %ebx
22389+#endif
22390 shr $16, %edx
22391- mov %dl, GDT_ESPFIX_SS + 4 /* bits 16..23 */
22392- mov %dh, GDT_ESPFIX_SS + 7 /* bits 24..31 */
22393+
22394+#ifdef CONFIG_PAX_KERNEXEC
22395+ mov %cr0, %esi
22396+ btr $16, %esi
22397+ mov %esi, %cr0
22398+#endif
22399+
22400+ mov %dl, 4 + GDT_ESPFIX_SS /* bits 16..23 */
22401+ mov %dh, 7 + GDT_ESPFIX_SS /* bits 24..31 */
22402+
22403+#ifdef CONFIG_PAX_KERNEXEC
22404+ bts $16, %esi
22405+ mov %esi, %cr0
22406+#endif
22407+
22408 pushl_cfi $__ESPFIX_SS
22409 pushl_cfi %eax /* new kernel esp */
22410 /* Disable interrupts, but do not irqtrace this section: we
22411@@ -612,20 +839,18 @@ work_resched:
22412 movl TI_flags(%ebp), %ecx
22413 andl $_TIF_WORK_MASK, %ecx # is there any work to be done other
22414 # than syscall tracing?
22415- jz restore_all
22416+ jz restore_all_pax
22417 testb $_TIF_NEED_RESCHED, %cl
22418 jnz work_resched
22419
22420 work_notifysig: # deal with pending signals and
22421 # notify-resume requests
22422+ movl %esp, %eax
22423 #ifdef CONFIG_VM86
22424 testl $X86_EFLAGS_VM, PT_EFLAGS(%esp)
22425- movl %esp, %eax
22426 jne work_notifysig_v86 # returning to kernel-space or
22427 # vm86-space
22428 1:
22429-#else
22430- movl %esp, %eax
22431 #endif
22432 TRACE_IRQS_ON
22433 ENABLE_INTERRUPTS(CLBR_NONE)
22434@@ -646,7 +871,7 @@ work_notifysig_v86:
22435 movl %eax, %esp
22436 jmp 1b
22437 #endif
22438-END(work_pending)
22439+ENDPROC(work_pending)
22440
22441 # perform syscall exit tracing
22442 ALIGN
22443@@ -654,11 +879,14 @@ syscall_trace_entry:
22444 movl $-ENOSYS,PT_EAX(%esp)
22445 movl %esp, %eax
22446 call syscall_trace_enter
22447+
22448+ pax_erase_kstack
22449+
22450 /* What it returned is what we'll actually use. */
22451 cmpl $(NR_syscalls), %eax
22452 jnae syscall_call
22453 jmp syscall_exit
22454-END(syscall_trace_entry)
22455+ENDPROC(syscall_trace_entry)
22456
22457 # perform syscall exit tracing
22458 ALIGN
22459@@ -671,26 +899,30 @@ syscall_exit_work:
22460 movl %esp, %eax
22461 call syscall_trace_leave
22462 jmp resume_userspace
22463-END(syscall_exit_work)
22464+ENDPROC(syscall_exit_work)
22465 CFI_ENDPROC
22466
22467 RING0_INT_FRAME # can't unwind into user space anyway
22468 syscall_fault:
22469+#ifdef CONFIG_PAX_MEMORY_UDEREF
22470+ push %ss
22471+ pop %ds
22472+#endif
22473 ASM_CLAC
22474 GET_THREAD_INFO(%ebp)
22475 movl $-EFAULT,PT_EAX(%esp)
22476 jmp resume_userspace
22477-END(syscall_fault)
22478+ENDPROC(syscall_fault)
22479
22480 syscall_badsys:
22481 movl $-ENOSYS,PT_EAX(%esp)
22482 jmp syscall_exit
22483-END(syscall_badsys)
22484+ENDPROC(syscall_badsys)
22485
22486 sysenter_badsys:
22487 movl $-ENOSYS,PT_EAX(%esp)
22488 jmp sysenter_after_call
22489-END(syscall_badsys)
22490+ENDPROC(sysenter_badsys)
22491 CFI_ENDPROC
22492 /*
22493 * End of kprobes section
22494@@ -706,8 +938,15 @@ END(syscall_badsys)
22495 * normal stack and adjusts ESP with the matching offset.
22496 */
22497 /* fixup the stack */
22498- mov GDT_ESPFIX_SS + 4, %al /* bits 16..23 */
22499- mov GDT_ESPFIX_SS + 7, %ah /* bits 24..31 */
22500+#ifdef CONFIG_SMP
22501+ movl PER_CPU_VAR(cpu_number), %ebx
22502+ shll $PAGE_SHIFT_asm, %ebx
22503+ addl $cpu_gdt_table, %ebx
22504+#else
22505+ movl $cpu_gdt_table, %ebx
22506+#endif
22507+ mov 4 + GDT_ESPFIX_SS, %al /* bits 16..23 */
22508+ mov 7 + GDT_ESPFIX_SS, %ah /* bits 24..31 */
22509 shl $16, %eax
22510 addl %esp, %eax /* the adjusted stack pointer */
22511 pushl_cfi $__KERNEL_DS
22512@@ -760,7 +999,7 @@ vector=vector+1
22513 .endr
22514 2: jmp common_interrupt
22515 .endr
22516-END(irq_entries_start)
22517+ENDPROC(irq_entries_start)
22518
22519 .previous
22520 END(interrupt)
22521@@ -821,7 +1060,7 @@ ENTRY(coprocessor_error)
22522 pushl_cfi $do_coprocessor_error
22523 jmp error_code
22524 CFI_ENDPROC
22525-END(coprocessor_error)
22526+ENDPROC(coprocessor_error)
22527
22528 ENTRY(simd_coprocessor_error)
22529 RING0_INT_FRAME
22530@@ -834,7 +1073,7 @@ ENTRY(simd_coprocessor_error)
22531 .section .altinstructions,"a"
22532 altinstruction_entry 661b, 663f, X86_FEATURE_XMM, 662b-661b, 664f-663f
22533 .previous
22534-.section .altinstr_replacement,"ax"
22535+.section .altinstr_replacement,"a"
22536 663: pushl $do_simd_coprocessor_error
22537 664:
22538 .previous
22539@@ -843,7 +1082,7 @@ ENTRY(simd_coprocessor_error)
22540 #endif
22541 jmp error_code
22542 CFI_ENDPROC
22543-END(simd_coprocessor_error)
22544+ENDPROC(simd_coprocessor_error)
22545
22546 ENTRY(device_not_available)
22547 RING0_INT_FRAME
22548@@ -852,18 +1091,18 @@ ENTRY(device_not_available)
22549 pushl_cfi $do_device_not_available
22550 jmp error_code
22551 CFI_ENDPROC
22552-END(device_not_available)
22553+ENDPROC(device_not_available)
22554
22555 #ifdef CONFIG_PARAVIRT
22556 ENTRY(native_iret)
22557 iret
22558 _ASM_EXTABLE(native_iret, iret_exc)
22559-END(native_iret)
22560+ENDPROC(native_iret)
22561
22562 ENTRY(native_irq_enable_sysexit)
22563 sti
22564 sysexit
22565-END(native_irq_enable_sysexit)
22566+ENDPROC(native_irq_enable_sysexit)
22567 #endif
22568
22569 ENTRY(overflow)
22570@@ -873,7 +1112,7 @@ ENTRY(overflow)
22571 pushl_cfi $do_overflow
22572 jmp error_code
22573 CFI_ENDPROC
22574-END(overflow)
22575+ENDPROC(overflow)
22576
22577 ENTRY(bounds)
22578 RING0_INT_FRAME
22579@@ -882,7 +1121,7 @@ ENTRY(bounds)
22580 pushl_cfi $do_bounds
22581 jmp error_code
22582 CFI_ENDPROC
22583-END(bounds)
22584+ENDPROC(bounds)
22585
22586 ENTRY(invalid_op)
22587 RING0_INT_FRAME
22588@@ -891,7 +1130,7 @@ ENTRY(invalid_op)
22589 pushl_cfi $do_invalid_op
22590 jmp error_code
22591 CFI_ENDPROC
22592-END(invalid_op)
22593+ENDPROC(invalid_op)
22594
22595 ENTRY(coprocessor_segment_overrun)
22596 RING0_INT_FRAME
22597@@ -900,7 +1139,7 @@ ENTRY(coprocessor_segment_overrun)
22598 pushl_cfi $do_coprocessor_segment_overrun
22599 jmp error_code
22600 CFI_ENDPROC
22601-END(coprocessor_segment_overrun)
22602+ENDPROC(coprocessor_segment_overrun)
22603
22604 ENTRY(invalid_TSS)
22605 RING0_EC_FRAME
22606@@ -908,7 +1147,7 @@ ENTRY(invalid_TSS)
22607 pushl_cfi $do_invalid_TSS
22608 jmp error_code
22609 CFI_ENDPROC
22610-END(invalid_TSS)
22611+ENDPROC(invalid_TSS)
22612
22613 ENTRY(segment_not_present)
22614 RING0_EC_FRAME
22615@@ -916,7 +1155,7 @@ ENTRY(segment_not_present)
22616 pushl_cfi $do_segment_not_present
22617 jmp error_code
22618 CFI_ENDPROC
22619-END(segment_not_present)
22620+ENDPROC(segment_not_present)
22621
22622 ENTRY(stack_segment)
22623 RING0_EC_FRAME
22624@@ -924,7 +1163,7 @@ ENTRY(stack_segment)
22625 pushl_cfi $do_stack_segment
22626 jmp error_code
22627 CFI_ENDPROC
22628-END(stack_segment)
22629+ENDPROC(stack_segment)
22630
22631 ENTRY(alignment_check)
22632 RING0_EC_FRAME
22633@@ -932,7 +1171,7 @@ ENTRY(alignment_check)
22634 pushl_cfi $do_alignment_check
22635 jmp error_code
22636 CFI_ENDPROC
22637-END(alignment_check)
22638+ENDPROC(alignment_check)
22639
22640 ENTRY(divide_error)
22641 RING0_INT_FRAME
22642@@ -941,7 +1180,7 @@ ENTRY(divide_error)
22643 pushl_cfi $do_divide_error
22644 jmp error_code
22645 CFI_ENDPROC
22646-END(divide_error)
22647+ENDPROC(divide_error)
22648
22649 #ifdef CONFIG_X86_MCE
22650 ENTRY(machine_check)
22651@@ -951,7 +1190,7 @@ ENTRY(machine_check)
22652 pushl_cfi machine_check_vector
22653 jmp error_code
22654 CFI_ENDPROC
22655-END(machine_check)
22656+ENDPROC(machine_check)
22657 #endif
22658
22659 ENTRY(spurious_interrupt_bug)
22660@@ -961,7 +1200,7 @@ ENTRY(spurious_interrupt_bug)
22661 pushl_cfi $do_spurious_interrupt_bug
22662 jmp error_code
22663 CFI_ENDPROC
22664-END(spurious_interrupt_bug)
22665+ENDPROC(spurious_interrupt_bug)
22666 /*
22667 * End of kprobes section
22668 */
22669@@ -1071,7 +1310,7 @@ BUILD_INTERRUPT3(hyperv_callback_vector, HYPERVISOR_CALLBACK_VECTOR,
22670
22671 ENTRY(mcount)
22672 ret
22673-END(mcount)
22674+ENDPROC(mcount)
22675
22676 ENTRY(ftrace_caller)
22677 cmpl $0, function_trace_stop
22678@@ -1104,7 +1343,7 @@ ftrace_graph_call:
22679 .globl ftrace_stub
22680 ftrace_stub:
22681 ret
22682-END(ftrace_caller)
22683+ENDPROC(ftrace_caller)
22684
22685 ENTRY(ftrace_regs_caller)
22686 pushf /* push flags before compare (in cs location) */
22687@@ -1208,7 +1447,7 @@ trace:
22688 popl %ecx
22689 popl %eax
22690 jmp ftrace_stub
22691-END(mcount)
22692+ENDPROC(mcount)
22693 #endif /* CONFIG_DYNAMIC_FTRACE */
22694 #endif /* CONFIG_FUNCTION_TRACER */
22695
22696@@ -1226,7 +1465,7 @@ ENTRY(ftrace_graph_caller)
22697 popl %ecx
22698 popl %eax
22699 ret
22700-END(ftrace_graph_caller)
22701+ENDPROC(ftrace_graph_caller)
22702
22703 .globl return_to_handler
22704 return_to_handler:
22705@@ -1292,15 +1531,18 @@ error_code:
22706 movl $-1, PT_ORIG_EAX(%esp) # no syscall to restart
22707 REG_TO_PTGS %ecx
22708 SET_KERNEL_GS %ecx
22709- movl $(__USER_DS), %ecx
22710+ movl $(__KERNEL_DS), %ecx
22711 movl %ecx, %ds
22712 movl %ecx, %es
22713+
22714+ pax_enter_kernel
22715+
22716 TRACE_IRQS_OFF
22717 movl %esp,%eax # pt_regs pointer
22718 call *%edi
22719 jmp ret_from_exception
22720 CFI_ENDPROC
22721-END(page_fault)
22722+ENDPROC(page_fault)
22723
22724 /*
22725 * Debug traps and NMI can happen at the one SYSENTER instruction
22726@@ -1343,7 +1585,7 @@ debug_stack_correct:
22727 call do_debug
22728 jmp ret_from_exception
22729 CFI_ENDPROC
22730-END(debug)
22731+ENDPROC(debug)
22732
22733 /*
22734 * NMI is doubly nasty. It can happen _while_ we're handling
22735@@ -1381,6 +1623,9 @@ nmi_stack_correct:
22736 xorl %edx,%edx # zero error code
22737 movl %esp,%eax # pt_regs pointer
22738 call do_nmi
22739+
22740+ pax_exit_kernel
22741+
22742 jmp restore_all_notrace
22743 CFI_ENDPROC
22744
22745@@ -1417,12 +1662,15 @@ nmi_espfix_stack:
22746 FIXUP_ESPFIX_STACK # %eax == %esp
22747 xorl %edx,%edx # zero error code
22748 call do_nmi
22749+
22750+ pax_exit_kernel
22751+
22752 RESTORE_REGS
22753 lss 12+4(%esp), %esp # back to espfix stack
22754 CFI_ADJUST_CFA_OFFSET -24
22755 jmp irq_return
22756 CFI_ENDPROC
22757-END(nmi)
22758+ENDPROC(nmi)
22759
22760 ENTRY(int3)
22761 RING0_INT_FRAME
22762@@ -1435,14 +1683,14 @@ ENTRY(int3)
22763 call do_int3
22764 jmp ret_from_exception
22765 CFI_ENDPROC
22766-END(int3)
22767+ENDPROC(int3)
22768
22769 ENTRY(general_protection)
22770 RING0_EC_FRAME
22771 pushl_cfi $do_general_protection
22772 jmp error_code
22773 CFI_ENDPROC
22774-END(general_protection)
22775+ENDPROC(general_protection)
22776
22777 #ifdef CONFIG_KVM_GUEST
22778 ENTRY(async_page_fault)
22779@@ -1451,7 +1699,7 @@ ENTRY(async_page_fault)
22780 pushl_cfi $do_async_page_fault
22781 jmp error_code
22782 CFI_ENDPROC
22783-END(async_page_fault)
22784+ENDPROC(async_page_fault)
22785 #endif
22786
22787 /*
22788diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
22789index 1e96c36..3ff710a 100644
22790--- a/arch/x86/kernel/entry_64.S
22791+++ b/arch/x86/kernel/entry_64.S
22792@@ -59,6 +59,8 @@
22793 #include <asm/context_tracking.h>
22794 #include <asm/smap.h>
22795 #include <linux/err.h>
22796+#include <asm/pgtable.h>
22797+#include <asm/alternative-asm.h>
22798
22799 /* Avoid __ASSEMBLER__'ifying <linux/audit.h> just for this. */
22800 #include <linux/elf-em.h>
22801@@ -80,8 +82,9 @@
22802 #ifdef CONFIG_DYNAMIC_FTRACE
22803
22804 ENTRY(function_hook)
22805+ pax_force_retaddr
22806 retq
22807-END(function_hook)
22808+ENDPROC(function_hook)
22809
22810 /* skip is set if stack has been adjusted */
22811 .macro ftrace_caller_setup skip=0
22812@@ -122,8 +125,9 @@ GLOBAL(ftrace_graph_call)
22813 #endif
22814
22815 GLOBAL(ftrace_stub)
22816+ pax_force_retaddr
22817 retq
22818-END(ftrace_caller)
22819+ENDPROC(ftrace_caller)
22820
22821 ENTRY(ftrace_regs_caller)
22822 /* Save the current flags before compare (in SS location)*/
22823@@ -191,7 +195,7 @@ ftrace_restore_flags:
22824 popfq
22825 jmp ftrace_stub
22826
22827-END(ftrace_regs_caller)
22828+ENDPROC(ftrace_regs_caller)
22829
22830
22831 #else /* ! CONFIG_DYNAMIC_FTRACE */
22832@@ -212,6 +216,7 @@ ENTRY(function_hook)
22833 #endif
22834
22835 GLOBAL(ftrace_stub)
22836+ pax_force_retaddr
22837 retq
22838
22839 trace:
22840@@ -225,12 +230,13 @@ trace:
22841 #endif
22842 subq $MCOUNT_INSN_SIZE, %rdi
22843
22844+ pax_force_fptr ftrace_trace_function
22845 call *ftrace_trace_function
22846
22847 MCOUNT_RESTORE_FRAME
22848
22849 jmp ftrace_stub
22850-END(function_hook)
22851+ENDPROC(function_hook)
22852 #endif /* CONFIG_DYNAMIC_FTRACE */
22853 #endif /* CONFIG_FUNCTION_TRACER */
22854
22855@@ -252,8 +258,9 @@ ENTRY(ftrace_graph_caller)
22856
22857 MCOUNT_RESTORE_FRAME
22858
22859+ pax_force_retaddr
22860 retq
22861-END(ftrace_graph_caller)
22862+ENDPROC(ftrace_graph_caller)
22863
22864 GLOBAL(return_to_handler)
22865 subq $24, %rsp
22866@@ -269,7 +276,9 @@ GLOBAL(return_to_handler)
22867 movq 8(%rsp), %rdx
22868 movq (%rsp), %rax
22869 addq $24, %rsp
22870+ pax_force_fptr %rdi
22871 jmp *%rdi
22872+ENDPROC(return_to_handler)
22873 #endif
22874
22875
22876@@ -284,6 +293,430 @@ ENTRY(native_usergs_sysret64)
22877 ENDPROC(native_usergs_sysret64)
22878 #endif /* CONFIG_PARAVIRT */
22879
22880+ .macro ljmpq sel, off
22881+#if defined(CONFIG_MPSC) || defined(CONFIG_MCORE2) || defined (CONFIG_MATOM)
22882+ .byte 0x48; ljmp *1234f(%rip)
22883+ .pushsection .rodata
22884+ .align 16
22885+ 1234: .quad \off; .word \sel
22886+ .popsection
22887+#else
22888+ pushq $\sel
22889+ pushq $\off
22890+ lretq
22891+#endif
22892+ .endm
22893+
22894+ .macro pax_enter_kernel
22895+ pax_set_fptr_mask
22896+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
22897+ call pax_enter_kernel
22898+#endif
22899+ .endm
22900+
22901+ .macro pax_exit_kernel
22902+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
22903+ call pax_exit_kernel
22904+#endif
22905+
22906+ .endm
22907+
22908+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
22909+ENTRY(pax_enter_kernel)
22910+ pushq %rdi
22911+
22912+#ifdef CONFIG_PARAVIRT
22913+ PV_SAVE_REGS(CLBR_RDI)
22914+#endif
22915+
22916+#ifdef CONFIG_PAX_KERNEXEC
22917+ GET_CR0_INTO_RDI
22918+ bts $16,%rdi
22919+ jnc 3f
22920+ mov %cs,%edi
22921+ cmp $__KERNEL_CS,%edi
22922+ jnz 2f
22923+1:
22924+#endif
22925+
22926+#ifdef CONFIG_PAX_MEMORY_UDEREF
22927+ 661: jmp 111f
22928+ .pushsection .altinstr_replacement, "a"
22929+ 662: ASM_NOP2
22930+ .popsection
22931+ .pushsection .altinstructions, "a"
22932+ altinstruction_entry 661b, 662b, X86_FEATURE_PCID, 2, 2
22933+ .popsection
22934+ GET_CR3_INTO_RDI
22935+ cmp $0,%dil
22936+ jnz 112f
22937+ mov $__KERNEL_DS,%edi
22938+ mov %edi,%ss
22939+ jmp 111f
22940+112: cmp $1,%dil
22941+ jz 113f
22942+ ud2
22943+113: sub $4097,%rdi
22944+ bts $63,%rdi
22945+ SET_RDI_INTO_CR3
22946+ mov $__UDEREF_KERNEL_DS,%edi
22947+ mov %edi,%ss
22948+111:
22949+#endif
22950+
22951+#ifdef CONFIG_PARAVIRT
22952+ PV_RESTORE_REGS(CLBR_RDI)
22953+#endif
22954+
22955+ popq %rdi
22956+ pax_force_retaddr
22957+ retq
22958+
22959+#ifdef CONFIG_PAX_KERNEXEC
22960+2: ljmpq __KERNEL_CS,1b
22961+3: ljmpq __KERNEXEC_KERNEL_CS,4f
22962+4: SET_RDI_INTO_CR0
22963+ jmp 1b
22964+#endif
22965+ENDPROC(pax_enter_kernel)
22966+
22967+ENTRY(pax_exit_kernel)
22968+ pushq %rdi
22969+
22970+#ifdef CONFIG_PARAVIRT
22971+ PV_SAVE_REGS(CLBR_RDI)
22972+#endif
22973+
22974+#ifdef CONFIG_PAX_KERNEXEC
22975+ mov %cs,%rdi
22976+ cmp $__KERNEXEC_KERNEL_CS,%edi
22977+ jz 2f
22978+ GET_CR0_INTO_RDI
22979+ bts $16,%rdi
22980+ jnc 4f
22981+1:
22982+#endif
22983+
22984+#ifdef CONFIG_PAX_MEMORY_UDEREF
22985+ 661: jmp 111f
22986+ .pushsection .altinstr_replacement, "a"
22987+ 662: ASM_NOP2
22988+ .popsection
22989+ .pushsection .altinstructions, "a"
22990+ altinstruction_entry 661b, 662b, X86_FEATURE_PCID, 2, 2
22991+ .popsection
22992+ mov %ss,%edi
22993+ cmp $__UDEREF_KERNEL_DS,%edi
22994+ jnz 111f
22995+ GET_CR3_INTO_RDI
22996+ cmp $0,%dil
22997+ jz 112f
22998+ ud2
22999+112: add $4097,%rdi
23000+ bts $63,%rdi
23001+ SET_RDI_INTO_CR3
23002+ mov $__KERNEL_DS,%edi
23003+ mov %edi,%ss
23004+111:
23005+#endif
23006+
23007+#ifdef CONFIG_PARAVIRT
23008+ PV_RESTORE_REGS(CLBR_RDI);
23009+#endif
23010+
23011+ popq %rdi
23012+ pax_force_retaddr
23013+ retq
23014+
23015+#ifdef CONFIG_PAX_KERNEXEC
23016+2: GET_CR0_INTO_RDI
23017+ btr $16,%rdi
23018+ jnc 4f
23019+ ljmpq __KERNEL_CS,3f
23020+3: SET_RDI_INTO_CR0
23021+ jmp 1b
23022+4: ud2
23023+ jmp 4b
23024+#endif
23025+ENDPROC(pax_exit_kernel)
23026+#endif
23027+
23028+ .macro pax_enter_kernel_user
23029+ pax_set_fptr_mask
23030+#ifdef CONFIG_PAX_MEMORY_UDEREF
23031+ call pax_enter_kernel_user
23032+#endif
23033+ .endm
23034+
23035+ .macro pax_exit_kernel_user
23036+#ifdef CONFIG_PAX_MEMORY_UDEREF
23037+ call pax_exit_kernel_user
23038+#endif
23039+#ifdef CONFIG_PAX_RANDKSTACK
23040+ pushq %rax
23041+ pushq %r11
23042+ call pax_randomize_kstack
23043+ popq %r11
23044+ popq %rax
23045+#endif
23046+ .endm
23047+
23048+#ifdef CONFIG_PAX_MEMORY_UDEREF
23049+ENTRY(pax_enter_kernel_user)
23050+ pushq %rdi
23051+ pushq %rbx
23052+
23053+#ifdef CONFIG_PARAVIRT
23054+ PV_SAVE_REGS(CLBR_RDI)
23055+#endif
23056+
23057+ 661: jmp 111f
23058+ .pushsection .altinstr_replacement, "a"
23059+ 662: ASM_NOP2
23060+ .popsection
23061+ .pushsection .altinstructions, "a"
23062+ altinstruction_entry 661b, 662b, X86_FEATURE_PCID, 2, 2
23063+ .popsection
23064+ GET_CR3_INTO_RDI
23065+ cmp $1,%dil
23066+ jnz 4f
23067+ sub $4097,%rdi
23068+ bts $63,%rdi
23069+ SET_RDI_INTO_CR3
23070+ jmp 3f
23071+111:
23072+
23073+ GET_CR3_INTO_RDI
23074+ mov %rdi,%rbx
23075+ add $__START_KERNEL_map,%rbx
23076+ sub phys_base(%rip),%rbx
23077+
23078+#ifdef CONFIG_PARAVIRT
23079+ cmpl $0, pv_info+PARAVIRT_enabled
23080+ jz 1f
23081+ pushq %rdi
23082+ i = 0
23083+ .rept USER_PGD_PTRS
23084+ mov i*8(%rbx),%rsi
23085+ mov $0,%sil
23086+ lea i*8(%rbx),%rdi
23087+ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd_batched)
23088+ i = i + 1
23089+ .endr
23090+ popq %rdi
23091+ jmp 2f
23092+1:
23093+#endif
23094+
23095+ i = 0
23096+ .rept USER_PGD_PTRS
23097+ movb $0,i*8(%rbx)
23098+ i = i + 1
23099+ .endr
23100+
23101+2: SET_RDI_INTO_CR3
23102+
23103+#ifdef CONFIG_PAX_KERNEXEC
23104+ GET_CR0_INTO_RDI
23105+ bts $16,%rdi
23106+ SET_RDI_INTO_CR0
23107+#endif
23108+
23109+3:
23110+
23111+#ifdef CONFIG_PARAVIRT
23112+ PV_RESTORE_REGS(CLBR_RDI)
23113+#endif
23114+
23115+ popq %rbx
23116+ popq %rdi
23117+ pax_force_retaddr
23118+ retq
23119+4: ud2
23120+ENDPROC(pax_enter_kernel_user)
23121+
23122+ENTRY(pax_exit_kernel_user)
23123+ pushq %rdi
23124+ pushq %rbx
23125+
23126+#ifdef CONFIG_PARAVIRT
23127+ PV_SAVE_REGS(CLBR_RDI)
23128+#endif
23129+
23130+ GET_CR3_INTO_RDI
23131+ 661: jmp 1f
23132+ .pushsection .altinstr_replacement, "a"
23133+ 662: ASM_NOP2
23134+ .popsection
23135+ .pushsection .altinstructions, "a"
23136+ altinstruction_entry 661b, 662b, X86_FEATURE_PCID, 2, 2
23137+ .popsection
23138+ cmp $0,%dil
23139+ jnz 3f
23140+ add $4097,%rdi
23141+ bts $63,%rdi
23142+ SET_RDI_INTO_CR3
23143+ jmp 2f
23144+1:
23145+
23146+ mov %rdi,%rbx
23147+
23148+#ifdef CONFIG_PAX_KERNEXEC
23149+ GET_CR0_INTO_RDI
23150+ btr $16,%rdi
23151+ jnc 3f
23152+ SET_RDI_INTO_CR0
23153+#endif
23154+
23155+ add $__START_KERNEL_map,%rbx
23156+ sub phys_base(%rip),%rbx
23157+
23158+#ifdef CONFIG_PARAVIRT
23159+ cmpl $0, pv_info+PARAVIRT_enabled
23160+ jz 1f
23161+ i = 0
23162+ .rept USER_PGD_PTRS
23163+ mov i*8(%rbx),%rsi
23164+ mov $0x67,%sil
23165+ lea i*8(%rbx),%rdi
23166+ call PARA_INDIRECT(pv_mmu_ops+PV_MMU_set_pgd_batched)
23167+ i = i + 1
23168+ .endr
23169+ jmp 2f
23170+1:
23171+#endif
23172+
23173+ i = 0
23174+ .rept USER_PGD_PTRS
23175+ movb $0x67,i*8(%rbx)
23176+ i = i + 1
23177+ .endr
23178+2:
23179+
23180+#ifdef CONFIG_PARAVIRT
23181+ PV_RESTORE_REGS(CLBR_RDI)
23182+#endif
23183+
23184+ popq %rbx
23185+ popq %rdi
23186+ pax_force_retaddr
23187+ retq
23188+3: ud2
23189+ENDPROC(pax_exit_kernel_user)
23190+#endif
23191+
23192+ .macro pax_enter_kernel_nmi
23193+ pax_set_fptr_mask
23194+
23195+#ifdef CONFIG_PAX_KERNEXEC
23196+ GET_CR0_INTO_RDI
23197+ bts $16,%rdi
23198+ jc 110f
23199+ SET_RDI_INTO_CR0
23200+ or $2,%ebx
23201+110:
23202+#endif
23203+
23204+#ifdef CONFIG_PAX_MEMORY_UDEREF
23205+ 661: jmp 111f
23206+ .pushsection .altinstr_replacement, "a"
23207+ 662: ASM_NOP2
23208+ .popsection
23209+ .pushsection .altinstructions, "a"
23210+ altinstruction_entry 661b, 662b, X86_FEATURE_PCID, 2, 2
23211+ .popsection
23212+ GET_CR3_INTO_RDI
23213+ cmp $0,%dil
23214+ jz 111f
23215+ sub $4097,%rdi
23216+ or $4,%ebx
23217+ bts $63,%rdi
23218+ SET_RDI_INTO_CR3
23219+ mov $__UDEREF_KERNEL_DS,%edi
23220+ mov %edi,%ss
23221+111:
23222+#endif
23223+ .endm
23224+
23225+ .macro pax_exit_kernel_nmi
23226+#ifdef CONFIG_PAX_KERNEXEC
23227+ btr $1,%ebx
23228+ jnc 110f
23229+ GET_CR0_INTO_RDI
23230+ btr $16,%rdi
23231+ SET_RDI_INTO_CR0
23232+110:
23233+#endif
23234+
23235+#ifdef CONFIG_PAX_MEMORY_UDEREF
23236+ btr $2,%ebx
23237+ jnc 111f
23238+ GET_CR3_INTO_RDI
23239+ add $4097,%rdi
23240+ bts $63,%rdi
23241+ SET_RDI_INTO_CR3
23242+ mov $__KERNEL_DS,%edi
23243+ mov %edi,%ss
23244+111:
23245+#endif
23246+ .endm
23247+
23248+ .macro pax_erase_kstack
23249+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
23250+ call pax_erase_kstack
23251+#endif
23252+ .endm
23253+
23254+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
23255+ENTRY(pax_erase_kstack)
23256+ pushq %rdi
23257+ pushq %rcx
23258+ pushq %rax
23259+ pushq %r11
23260+
23261+ GET_THREAD_INFO(%r11)
23262+ mov TI_lowest_stack(%r11), %rdi
23263+ mov $-0xBEEF, %rax
23264+ std
23265+
23266+1: mov %edi, %ecx
23267+ and $THREAD_SIZE_asm - 1, %ecx
23268+ shr $3, %ecx
23269+ repne scasq
23270+ jecxz 2f
23271+
23272+ cmp $2*8, %ecx
23273+ jc 2f
23274+
23275+ mov $2*8, %ecx
23276+ repe scasq
23277+ jecxz 2f
23278+ jne 1b
23279+
23280+2: cld
23281+ mov %esp, %ecx
23282+ sub %edi, %ecx
23283+
23284+ cmp $THREAD_SIZE_asm, %rcx
23285+ jb 3f
23286+ ud2
23287+3:
23288+
23289+ shr $3, %ecx
23290+ rep stosq
23291+
23292+ mov TI_task_thread_sp0(%r11), %rdi
23293+ sub $256, %rdi
23294+ mov %rdi, TI_lowest_stack(%r11)
23295+
23296+ popq %r11
23297+ popq %rax
23298+ popq %rcx
23299+ popq %rdi
23300+ pax_force_retaddr
23301+ ret
23302+ENDPROC(pax_erase_kstack)
23303+#endif
23304
23305 .macro TRACE_IRQS_IRETQ offset=ARGOFFSET
23306 #ifdef CONFIG_TRACE_IRQFLAGS
23307@@ -320,7 +753,7 @@ ENDPROC(native_usergs_sysret64)
23308 .endm
23309
23310 .macro TRACE_IRQS_IRETQ_DEBUG offset=ARGOFFSET
23311- bt $9,EFLAGS-\offset(%rsp) /* interrupts off? */
23312+ bt $X86_EFLAGS_IF_BIT,EFLAGS-\offset(%rsp) /* interrupts off? */
23313 jnc 1f
23314 TRACE_IRQS_ON_DEBUG
23315 1:
23316@@ -358,27 +791,6 @@ ENDPROC(native_usergs_sysret64)
23317 movq \tmp,R11+\offset(%rsp)
23318 .endm
23319
23320- .macro FAKE_STACK_FRAME child_rip
23321- /* push in order ss, rsp, eflags, cs, rip */
23322- xorl %eax, %eax
23323- pushq_cfi $__KERNEL_DS /* ss */
23324- /*CFI_REL_OFFSET ss,0*/
23325- pushq_cfi %rax /* rsp */
23326- CFI_REL_OFFSET rsp,0
23327- pushq_cfi $(X86_EFLAGS_IF|X86_EFLAGS_FIXED) /* eflags - interrupts on */
23328- /*CFI_REL_OFFSET rflags,0*/
23329- pushq_cfi $__KERNEL_CS /* cs */
23330- /*CFI_REL_OFFSET cs,0*/
23331- pushq_cfi \child_rip /* rip */
23332- CFI_REL_OFFSET rip,0
23333- pushq_cfi %rax /* orig rax */
23334- .endm
23335-
23336- .macro UNFAKE_STACK_FRAME
23337- addq $8*6, %rsp
23338- CFI_ADJUST_CFA_OFFSET -(6*8)
23339- .endm
23340-
23341 /*
23342 * initial frame state for interrupts (and exceptions without error code)
23343 */
23344@@ -445,25 +857,26 @@ ENDPROC(native_usergs_sysret64)
23345 /* save partial stack frame */
23346 .macro SAVE_ARGS_IRQ
23347 cld
23348- /* start from rbp in pt_regs and jump over */
23349- movq_cfi rdi, (RDI-RBP)
23350- movq_cfi rsi, (RSI-RBP)
23351- movq_cfi rdx, (RDX-RBP)
23352- movq_cfi rcx, (RCX-RBP)
23353- movq_cfi rax, (RAX-RBP)
23354- movq_cfi r8, (R8-RBP)
23355- movq_cfi r9, (R9-RBP)
23356- movq_cfi r10, (R10-RBP)
23357- movq_cfi r11, (R11-RBP)
23358+ /* start from r15 in pt_regs and jump over */
23359+ movq_cfi rdi, RDI
23360+ movq_cfi rsi, RSI
23361+ movq_cfi rdx, RDX
23362+ movq_cfi rcx, RCX
23363+ movq_cfi rax, RAX
23364+ movq_cfi r8, R8
23365+ movq_cfi r9, R9
23366+ movq_cfi r10, R10
23367+ movq_cfi r11, R11
23368+ movq_cfi r12, R12
23369
23370 /* Save rbp so that we can unwind from get_irq_regs() */
23371- movq_cfi rbp, 0
23372+ movq_cfi rbp, RBP
23373
23374 /* Save previous stack value */
23375 movq %rsp, %rsi
23376
23377- leaq -RBP(%rsp),%rdi /* arg1 for handler */
23378- testl $3, CS-RBP(%rsi)
23379+ movq %rsp,%rdi /* arg1 for handler */
23380+ testb $3, CS(%rsi)
23381 je 1f
23382 SWAPGS
23383 /*
23384@@ -483,6 +896,18 @@ ENDPROC(native_usergs_sysret64)
23385 0x06 /* DW_OP_deref */, \
23386 0x08 /* DW_OP_const1u */, SS+8-RBP, \
23387 0x22 /* DW_OP_plus */
23388+
23389+#ifdef CONFIG_PAX_MEMORY_UDEREF
23390+ testb $3, CS(%rdi)
23391+ jnz 1f
23392+ pax_enter_kernel
23393+ jmp 2f
23394+1: pax_enter_kernel_user
23395+2:
23396+#else
23397+ pax_enter_kernel
23398+#endif
23399+
23400 /* We entered an interrupt context - irqs are off: */
23401 TRACE_IRQS_OFF
23402 .endm
23403@@ -514,9 +939,52 @@ ENTRY(save_paranoid)
23404 js 1f /* negative -> in kernel */
23405 SWAPGS
23406 xorl %ebx,%ebx
23407-1: ret
23408+1:
23409+#ifdef CONFIG_PAX_MEMORY_UDEREF
23410+ testb $3, CS+8(%rsp)
23411+ jnz 1f
23412+ pax_enter_kernel
23413+ jmp 2f
23414+1: pax_enter_kernel_user
23415+2:
23416+#else
23417+ pax_enter_kernel
23418+#endif
23419+ pax_force_retaddr
23420+ ret
23421 CFI_ENDPROC
23422-END(save_paranoid)
23423+ENDPROC(save_paranoid)
23424+
23425+ENTRY(save_paranoid_nmi)
23426+ XCPT_FRAME 1 RDI+8
23427+ cld
23428+ movq_cfi rdi, RDI+8
23429+ movq_cfi rsi, RSI+8
23430+ movq_cfi rdx, RDX+8
23431+ movq_cfi rcx, RCX+8
23432+ movq_cfi rax, RAX+8
23433+ movq_cfi r8, R8+8
23434+ movq_cfi r9, R9+8
23435+ movq_cfi r10, R10+8
23436+ movq_cfi r11, R11+8
23437+ movq_cfi rbx, RBX+8
23438+ movq_cfi rbp, RBP+8
23439+ movq_cfi r12, R12+8
23440+ movq_cfi r13, R13+8
23441+ movq_cfi r14, R14+8
23442+ movq_cfi r15, R15+8
23443+ movl $1,%ebx
23444+ movl $MSR_GS_BASE,%ecx
23445+ rdmsr
23446+ testl %edx,%edx
23447+ js 1f /* negative -> in kernel */
23448+ SWAPGS
23449+ xorl %ebx,%ebx
23450+1: pax_enter_kernel_nmi
23451+ pax_force_retaddr
23452+ ret
23453+ CFI_ENDPROC
23454+ENDPROC(save_paranoid_nmi)
23455 .popsection
23456
23457 /*
23458@@ -538,7 +1006,7 @@ ENTRY(ret_from_fork)
23459
23460 RESTORE_REST
23461
23462- testl $3, CS-ARGOFFSET(%rsp) # from kernel_thread?
23463+ testb $3, CS-ARGOFFSET(%rsp) # from kernel_thread?
23464 jz 1f
23465
23466 testl $_TIF_IA32, TI_flags(%rcx) # 32-bit compat task needs IRET
23467@@ -548,15 +1016,13 @@ ENTRY(ret_from_fork)
23468 jmp ret_from_sys_call # go to the SYSRET fastpath
23469
23470 1:
23471- subq $REST_SKIP, %rsp # leave space for volatiles
23472- CFI_ADJUST_CFA_OFFSET REST_SKIP
23473 movq %rbp, %rdi
23474 call *%rbx
23475 movl $0, RAX(%rsp)
23476 RESTORE_REST
23477 jmp int_ret_from_sys_call
23478 CFI_ENDPROC
23479-END(ret_from_fork)
23480+ENDPROC(ret_from_fork)
23481
23482 /*
23483 * System call entry. Up to 6 arguments in registers are supported.
23484@@ -593,7 +1059,7 @@ END(ret_from_fork)
23485 ENTRY(system_call)
23486 CFI_STARTPROC simple
23487 CFI_SIGNAL_FRAME
23488- CFI_DEF_CFA rsp,KERNEL_STACK_OFFSET
23489+ CFI_DEF_CFA rsp,0
23490 CFI_REGISTER rip,rcx
23491 /*CFI_REGISTER rflags,r11*/
23492 SWAPGS_UNSAFE_STACK
23493@@ -606,16 +1072,23 @@ GLOBAL(system_call_after_swapgs)
23494
23495 movq %rsp,PER_CPU_VAR(old_rsp)
23496 movq PER_CPU_VAR(kernel_stack),%rsp
23497+ SAVE_ARGS 8*6,0
23498+ pax_enter_kernel_user
23499+
23500+#ifdef CONFIG_PAX_RANDKSTACK
23501+ pax_erase_kstack
23502+#endif
23503+
23504 /*
23505 * No need to follow this irqs off/on section - it's straight
23506 * and short:
23507 */
23508 ENABLE_INTERRUPTS(CLBR_NONE)
23509- SAVE_ARGS 8,0
23510 movq %rax,ORIG_RAX-ARGOFFSET(%rsp)
23511 movq %rcx,RIP-ARGOFFSET(%rsp)
23512 CFI_REL_OFFSET rip,RIP-ARGOFFSET
23513- testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
23514+ GET_THREAD_INFO(%rcx)
23515+ testl $_TIF_WORK_SYSCALL_ENTRY,TI_flags(%rcx)
23516 jnz tracesys
23517 system_call_fastpath:
23518 #if __SYSCALL_MASK == ~0
23519@@ -639,10 +1112,13 @@ sysret_check:
23520 LOCKDEP_SYS_EXIT
23521 DISABLE_INTERRUPTS(CLBR_NONE)
23522 TRACE_IRQS_OFF
23523- movl TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET),%edx
23524+ GET_THREAD_INFO(%rcx)
23525+ movl TI_flags(%rcx),%edx
23526 andl %edi,%edx
23527 jnz sysret_careful
23528 CFI_REMEMBER_STATE
23529+ pax_exit_kernel_user
23530+ pax_erase_kstack
23531 /*
23532 * sysretq will re-enable interrupts:
23533 */
23534@@ -701,6 +1177,9 @@ auditsys:
23535 movq %rax,%rsi /* 2nd arg: syscall number */
23536 movl $AUDIT_ARCH_X86_64,%edi /* 1st arg: audit arch */
23537 call __audit_syscall_entry
23538+
23539+ pax_erase_kstack
23540+
23541 LOAD_ARGS 0 /* reload call-clobbered registers */
23542 jmp system_call_fastpath
23543
23544@@ -722,7 +1201,7 @@ sysret_audit:
23545 /* Do syscall tracing */
23546 tracesys:
23547 #ifdef CONFIG_AUDITSYSCALL
23548- testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags+THREAD_INFO(%rsp,RIP-ARGOFFSET)
23549+ testl $(_TIF_WORK_SYSCALL_ENTRY & ~_TIF_SYSCALL_AUDIT),TI_flags(%rcx)
23550 jz auditsys
23551 #endif
23552 SAVE_REST
23553@@ -730,12 +1209,15 @@ tracesys:
23554 FIXUP_TOP_OF_STACK %rdi
23555 movq %rsp,%rdi
23556 call syscall_trace_enter
23557+
23558+ pax_erase_kstack
23559+
23560 /*
23561 * Reload arg registers from stack in case ptrace changed them.
23562 * We don't reload %rax because syscall_trace_enter() returned
23563 * the value it wants us to use in the table lookup.
23564 */
23565- LOAD_ARGS ARGOFFSET, 1
23566+ LOAD_ARGS 1
23567 RESTORE_REST
23568 #if __SYSCALL_MASK == ~0
23569 cmpq $__NR_syscall_max,%rax
23570@@ -765,7 +1247,9 @@ GLOBAL(int_with_check)
23571 andl %edi,%edx
23572 jnz int_careful
23573 andl $~TS_COMPAT,TI_status(%rcx)
23574- jmp retint_swapgs
23575+ pax_exit_kernel_user
23576+ pax_erase_kstack
23577+ jmp retint_swapgs_pax
23578
23579 /* Either reschedule or signal or syscall exit tracking needed. */
23580 /* First do a reschedule test. */
23581@@ -811,7 +1295,7 @@ int_restore_rest:
23582 TRACE_IRQS_OFF
23583 jmp int_with_check
23584 CFI_ENDPROC
23585-END(system_call)
23586+ENDPROC(system_call)
23587
23588 .macro FORK_LIKE func
23589 ENTRY(stub_\func)
23590@@ -824,9 +1308,10 @@ ENTRY(stub_\func)
23591 DEFAULT_FRAME 0 8 /* offset 8: return address */
23592 call sys_\func
23593 RESTORE_TOP_OF_STACK %r11, 8
23594- ret $REST_SKIP /* pop extended registers */
23595+ pax_force_retaddr
23596+ ret
23597 CFI_ENDPROC
23598-END(stub_\func)
23599+ENDPROC(stub_\func)
23600 .endm
23601
23602 .macro FIXED_FRAME label,func
23603@@ -836,9 +1321,10 @@ ENTRY(\label)
23604 FIXUP_TOP_OF_STACK %r11, 8-ARGOFFSET
23605 call \func
23606 RESTORE_TOP_OF_STACK %r11, 8-ARGOFFSET
23607+ pax_force_retaddr
23608 ret
23609 CFI_ENDPROC
23610-END(\label)
23611+ENDPROC(\label)
23612 .endm
23613
23614 FORK_LIKE clone
23615@@ -846,19 +1332,6 @@ END(\label)
23616 FORK_LIKE vfork
23617 FIXED_FRAME stub_iopl, sys_iopl
23618
23619-ENTRY(ptregscall_common)
23620- DEFAULT_FRAME 1 8 /* offset 8: return address */
23621- RESTORE_TOP_OF_STACK %r11, 8
23622- movq_cfi_restore R15+8, r15
23623- movq_cfi_restore R14+8, r14
23624- movq_cfi_restore R13+8, r13
23625- movq_cfi_restore R12+8, r12
23626- movq_cfi_restore RBP+8, rbp
23627- movq_cfi_restore RBX+8, rbx
23628- ret $REST_SKIP /* pop extended registers */
23629- CFI_ENDPROC
23630-END(ptregscall_common)
23631-
23632 ENTRY(stub_execve)
23633 CFI_STARTPROC
23634 addq $8, %rsp
23635@@ -870,7 +1343,7 @@ ENTRY(stub_execve)
23636 RESTORE_REST
23637 jmp int_ret_from_sys_call
23638 CFI_ENDPROC
23639-END(stub_execve)
23640+ENDPROC(stub_execve)
23641
23642 /*
23643 * sigreturn is special because it needs to restore all registers on return.
23644@@ -887,7 +1360,7 @@ ENTRY(stub_rt_sigreturn)
23645 RESTORE_REST
23646 jmp int_ret_from_sys_call
23647 CFI_ENDPROC
23648-END(stub_rt_sigreturn)
23649+ENDPROC(stub_rt_sigreturn)
23650
23651 #ifdef CONFIG_X86_X32_ABI
23652 ENTRY(stub_x32_rt_sigreturn)
23653@@ -901,7 +1374,7 @@ ENTRY(stub_x32_rt_sigreturn)
23654 RESTORE_REST
23655 jmp int_ret_from_sys_call
23656 CFI_ENDPROC
23657-END(stub_x32_rt_sigreturn)
23658+ENDPROC(stub_x32_rt_sigreturn)
23659
23660 ENTRY(stub_x32_execve)
23661 CFI_STARTPROC
23662@@ -915,7 +1388,7 @@ ENTRY(stub_x32_execve)
23663 RESTORE_REST
23664 jmp int_ret_from_sys_call
23665 CFI_ENDPROC
23666-END(stub_x32_execve)
23667+ENDPROC(stub_x32_execve)
23668
23669 #endif
23670
23671@@ -952,7 +1425,7 @@ vector=vector+1
23672 2: jmp common_interrupt
23673 .endr
23674 CFI_ENDPROC
23675-END(irq_entries_start)
23676+ENDPROC(irq_entries_start)
23677
23678 .previous
23679 END(interrupt)
23680@@ -969,8 +1442,8 @@ END(interrupt)
23681 /* 0(%rsp): ~(interrupt number) */
23682 .macro interrupt func
23683 /* reserve pt_regs for scratch regs and rbp */
23684- subq $ORIG_RAX-RBP, %rsp
23685- CFI_ADJUST_CFA_OFFSET ORIG_RAX-RBP
23686+ subq $ORIG_RAX, %rsp
23687+ CFI_ADJUST_CFA_OFFSET ORIG_RAX
23688 SAVE_ARGS_IRQ
23689 call \func
23690 .endm
23691@@ -997,14 +1470,14 @@ ret_from_intr:
23692
23693 /* Restore saved previous stack */
23694 popq %rsi
23695- CFI_DEF_CFA rsi,SS+8-RBP /* reg/off reset after def_cfa_expr */
23696- leaq ARGOFFSET-RBP(%rsi), %rsp
23697+ CFI_DEF_CFA rsi,SS+8 /* reg/off reset after def_cfa_expr */
23698+ movq %rsi, %rsp
23699 CFI_DEF_CFA_REGISTER rsp
23700- CFI_ADJUST_CFA_OFFSET RBP-ARGOFFSET
23701+ CFI_ADJUST_CFA_OFFSET -ARGOFFSET
23702
23703 exit_intr:
23704 GET_THREAD_INFO(%rcx)
23705- testl $3,CS-ARGOFFSET(%rsp)
23706+ testb $3,CS-ARGOFFSET(%rsp)
23707 je retint_kernel
23708
23709 /* Interrupt came from user space */
23710@@ -1026,12 +1499,16 @@ retint_swapgs: /* return to user-space */
23711 * The iretq could re-enable interrupts:
23712 */
23713 DISABLE_INTERRUPTS(CLBR_ANY)
23714+ pax_exit_kernel_user
23715+retint_swapgs_pax:
23716 TRACE_IRQS_IRETQ
23717 SWAPGS
23718 jmp restore_args
23719
23720 retint_restore_args: /* return to kernel space */
23721 DISABLE_INTERRUPTS(CLBR_ANY)
23722+ pax_exit_kernel
23723+ pax_force_retaddr (RIP-ARGOFFSET)
23724 /*
23725 * The iretq could re-enable interrupts:
23726 */
23727@@ -1112,7 +1589,7 @@ ENTRY(retint_kernel)
23728 #endif
23729
23730 CFI_ENDPROC
23731-END(common_interrupt)
23732+ENDPROC(common_interrupt)
23733 /*
23734 * End of kprobes section
23735 */
23736@@ -1130,7 +1607,7 @@ ENTRY(\sym)
23737 interrupt \do_sym
23738 jmp ret_from_intr
23739 CFI_ENDPROC
23740-END(\sym)
23741+ENDPROC(\sym)
23742 .endm
23743
23744 #ifdef CONFIG_TRACING
23745@@ -1218,7 +1695,7 @@ ENTRY(\sym)
23746 call \do_sym
23747 jmp error_exit /* %ebx: no swapgs flag */
23748 CFI_ENDPROC
23749-END(\sym)
23750+ENDPROC(\sym)
23751 .endm
23752
23753 .macro paranoidzeroentry sym do_sym
23754@@ -1236,10 +1713,10 @@ ENTRY(\sym)
23755 call \do_sym
23756 jmp paranoid_exit /* %ebx: no swapgs flag */
23757 CFI_ENDPROC
23758-END(\sym)
23759+ENDPROC(\sym)
23760 .endm
23761
23762-#define INIT_TSS_IST(x) PER_CPU_VAR(init_tss) + (TSS_ist + ((x) - 1) * 8)
23763+#define INIT_TSS_IST(x) (TSS_ist + ((x) - 1) * 8)(%r13)
23764 .macro paranoidzeroentry_ist sym do_sym ist
23765 ENTRY(\sym)
23766 INTR_FRAME
23767@@ -1252,12 +1729,18 @@ ENTRY(\sym)
23768 TRACE_IRQS_OFF_DEBUG
23769 movq %rsp,%rdi /* pt_regs pointer */
23770 xorl %esi,%esi /* no error code */
23771+#ifdef CONFIG_SMP
23772+ imul $TSS_size, PER_CPU_VAR(cpu_number), %r13d
23773+ lea init_tss(%r13), %r13
23774+#else
23775+ lea init_tss(%rip), %r13
23776+#endif
23777 subq $EXCEPTION_STKSZ, INIT_TSS_IST(\ist)
23778 call \do_sym
23779 addq $EXCEPTION_STKSZ, INIT_TSS_IST(\ist)
23780 jmp paranoid_exit /* %ebx: no swapgs flag */
23781 CFI_ENDPROC
23782-END(\sym)
23783+ENDPROC(\sym)
23784 .endm
23785
23786 .macro errorentry sym do_sym
23787@@ -1275,7 +1758,7 @@ ENTRY(\sym)
23788 call \do_sym
23789 jmp error_exit /* %ebx: no swapgs flag */
23790 CFI_ENDPROC
23791-END(\sym)
23792+ENDPROC(\sym)
23793 .endm
23794
23795 #ifdef CONFIG_TRACING
23796@@ -1306,7 +1789,7 @@ ENTRY(\sym)
23797 call \do_sym
23798 jmp paranoid_exit /* %ebx: no swapgs flag */
23799 CFI_ENDPROC
23800-END(\sym)
23801+ENDPROC(\sym)
23802 .endm
23803
23804 zeroentry divide_error do_divide_error
23805@@ -1336,9 +1819,10 @@ gs_change:
23806 2: mfence /* workaround */
23807 SWAPGS
23808 popfq_cfi
23809+ pax_force_retaddr
23810 ret
23811 CFI_ENDPROC
23812-END(native_load_gs_index)
23813+ENDPROC(native_load_gs_index)
23814
23815 _ASM_EXTABLE(gs_change,bad_gs)
23816 .section .fixup,"ax"
23817@@ -1366,9 +1850,10 @@ ENTRY(do_softirq_own_stack)
23818 CFI_DEF_CFA_REGISTER rsp
23819 CFI_ADJUST_CFA_OFFSET -8
23820 decl PER_CPU_VAR(irq_count)
23821+ pax_force_retaddr
23822 ret
23823 CFI_ENDPROC
23824-END(do_softirq_own_stack)
23825+ENDPROC(do_softirq_own_stack)
23826
23827 #ifdef CONFIG_XEN
23828 zeroentry xen_hypervisor_callback xen_do_hypervisor_callback
23829@@ -1406,7 +1891,7 @@ ENTRY(xen_do_hypervisor_callback) # do_hypervisor_callback(struct *pt_regs)
23830 decl PER_CPU_VAR(irq_count)
23831 jmp error_exit
23832 CFI_ENDPROC
23833-END(xen_do_hypervisor_callback)
23834+ENDPROC(xen_do_hypervisor_callback)
23835
23836 /*
23837 * Hypervisor uses this for application faults while it executes.
23838@@ -1465,7 +1950,7 @@ ENTRY(xen_failsafe_callback)
23839 SAVE_ALL
23840 jmp error_exit
23841 CFI_ENDPROC
23842-END(xen_failsafe_callback)
23843+ENDPROC(xen_failsafe_callback)
23844
23845 apicinterrupt3 HYPERVISOR_CALLBACK_VECTOR \
23846 xen_hvm_callback_vector xen_evtchn_do_upcall
23847@@ -1517,18 +2002,33 @@ ENTRY(paranoid_exit)
23848 DEFAULT_FRAME
23849 DISABLE_INTERRUPTS(CLBR_NONE)
23850 TRACE_IRQS_OFF_DEBUG
23851- testl %ebx,%ebx /* swapgs needed? */
23852+ testl $1,%ebx /* swapgs needed? */
23853 jnz paranoid_restore
23854- testl $3,CS(%rsp)
23855+ testb $3,CS(%rsp)
23856 jnz paranoid_userspace
23857+#ifdef CONFIG_PAX_MEMORY_UDEREF
23858+ pax_exit_kernel
23859+ TRACE_IRQS_IRETQ 0
23860+ SWAPGS_UNSAFE_STACK
23861+ RESTORE_ALL 8
23862+ pax_force_retaddr_bts
23863+ jmp irq_return
23864+#endif
23865 paranoid_swapgs:
23866+#ifdef CONFIG_PAX_MEMORY_UDEREF
23867+ pax_exit_kernel_user
23868+#else
23869+ pax_exit_kernel
23870+#endif
23871 TRACE_IRQS_IRETQ 0
23872 SWAPGS_UNSAFE_STACK
23873 RESTORE_ALL 8
23874 jmp irq_return
23875 paranoid_restore:
23876+ pax_exit_kernel
23877 TRACE_IRQS_IRETQ_DEBUG 0
23878 RESTORE_ALL 8
23879+ pax_force_retaddr_bts
23880 jmp irq_return
23881 paranoid_userspace:
23882 GET_THREAD_INFO(%rcx)
23883@@ -1557,7 +2057,7 @@ paranoid_schedule:
23884 TRACE_IRQS_OFF
23885 jmp paranoid_userspace
23886 CFI_ENDPROC
23887-END(paranoid_exit)
23888+ENDPROC(paranoid_exit)
23889
23890 /*
23891 * Exception entry point. This expects an error code/orig_rax on the stack.
23892@@ -1584,12 +2084,23 @@ ENTRY(error_entry)
23893 movq_cfi r14, R14+8
23894 movq_cfi r15, R15+8
23895 xorl %ebx,%ebx
23896- testl $3,CS+8(%rsp)
23897+ testb $3,CS+8(%rsp)
23898 je error_kernelspace
23899 error_swapgs:
23900 SWAPGS
23901 error_sti:
23902+#ifdef CONFIG_PAX_MEMORY_UDEREF
23903+ testb $3, CS+8(%rsp)
23904+ jnz 1f
23905+ pax_enter_kernel
23906+ jmp 2f
23907+1: pax_enter_kernel_user
23908+2:
23909+#else
23910+ pax_enter_kernel
23911+#endif
23912 TRACE_IRQS_OFF
23913+ pax_force_retaddr
23914 ret
23915
23916 /*
23917@@ -1616,7 +2127,7 @@ bstep_iret:
23918 movq %rcx,RIP+8(%rsp)
23919 jmp error_swapgs
23920 CFI_ENDPROC
23921-END(error_entry)
23922+ENDPROC(error_entry)
23923
23924
23925 /* ebx: no swapgs flag (1: don't need swapgs, 0: need it) */
23926@@ -1627,7 +2138,7 @@ ENTRY(error_exit)
23927 DISABLE_INTERRUPTS(CLBR_NONE)
23928 TRACE_IRQS_OFF
23929 GET_THREAD_INFO(%rcx)
23930- testl %eax,%eax
23931+ testl $1,%eax
23932 jne retint_kernel
23933 LOCKDEP_SYS_EXIT_IRQ
23934 movl TI_flags(%rcx),%edx
23935@@ -1636,7 +2147,7 @@ ENTRY(error_exit)
23936 jnz retint_careful
23937 jmp retint_swapgs
23938 CFI_ENDPROC
23939-END(error_exit)
23940+ENDPROC(error_exit)
23941
23942 /*
23943 * Test if a given stack is an NMI stack or not.
23944@@ -1694,9 +2205,11 @@ ENTRY(nmi)
23945 * If %cs was not the kernel segment, then the NMI triggered in user
23946 * space, which means it is definitely not nested.
23947 */
23948+ cmpl $__KERNEXEC_KERNEL_CS, 16(%rsp)
23949+ je 1f
23950 cmpl $__KERNEL_CS, 16(%rsp)
23951 jne first_nmi
23952-
23953+1:
23954 /*
23955 * Check the special variable on the stack to see if NMIs are
23956 * executing.
23957@@ -1730,8 +2243,7 @@ nested_nmi:
23958
23959 1:
23960 /* Set up the interrupted NMIs stack to jump to repeat_nmi */
23961- leaq -1*8(%rsp), %rdx
23962- movq %rdx, %rsp
23963+ subq $8, %rsp
23964 CFI_ADJUST_CFA_OFFSET 1*8
23965 leaq -10*8(%rsp), %rdx
23966 pushq_cfi $__KERNEL_DS
23967@@ -1749,6 +2261,7 @@ nested_nmi_out:
23968 CFI_RESTORE rdx
23969
23970 /* No need to check faults here */
23971+# pax_force_retaddr_bts
23972 INTERRUPT_RETURN
23973
23974 CFI_RESTORE_STATE
23975@@ -1845,13 +2358,13 @@ end_repeat_nmi:
23976 subq $ORIG_RAX-R15, %rsp
23977 CFI_ADJUST_CFA_OFFSET ORIG_RAX-R15
23978 /*
23979- * Use save_paranoid to handle SWAPGS, but no need to use paranoid_exit
23980+ * Use save_paranoid_nmi to handle SWAPGS, but no need to use paranoid_exit
23981 * as we should not be calling schedule in NMI context.
23982 * Even with normal interrupts enabled. An NMI should not be
23983 * setting NEED_RESCHED or anything that normal interrupts and
23984 * exceptions might do.
23985 */
23986- call save_paranoid
23987+ call save_paranoid_nmi
23988 DEFAULT_FRAME 0
23989
23990 /*
23991@@ -1861,9 +2374,9 @@ end_repeat_nmi:
23992 * NMI itself takes a page fault, the page fault that was preempted
23993 * will read the information from the NMI page fault and not the
23994 * origin fault. Save it off and restore it if it changes.
23995- * Use the r12 callee-saved register.
23996+ * Use the r13 callee-saved register.
23997 */
23998- movq %cr2, %r12
23999+ movq %cr2, %r13
24000
24001 /* paranoidentry do_nmi, 0; without TRACE_IRQS_OFF */
24002 movq %rsp,%rdi
24003@@ -1872,31 +2385,36 @@ end_repeat_nmi:
24004
24005 /* Did the NMI take a page fault? Restore cr2 if it did */
24006 movq %cr2, %rcx
24007- cmpq %rcx, %r12
24008+ cmpq %rcx, %r13
24009 je 1f
24010- movq %r12, %cr2
24011+ movq %r13, %cr2
24012 1:
24013
24014- testl %ebx,%ebx /* swapgs needed? */
24015+ testl $1,%ebx /* swapgs needed? */
24016 jnz nmi_restore
24017 nmi_swapgs:
24018 SWAPGS_UNSAFE_STACK
24019 nmi_restore:
24020+ pax_exit_kernel_nmi
24021 /* Pop the extra iret frame at once */
24022 RESTORE_ALL 6*8
24023+ testb $3, 8(%rsp)
24024+ jnz 1f
24025+ pax_force_retaddr_bts
24026+1:
24027
24028 /* Clear the NMI executing stack variable */
24029 movq $0, 5*8(%rsp)
24030 jmp irq_return
24031 CFI_ENDPROC
24032-END(nmi)
24033+ENDPROC(nmi)
24034
24035 ENTRY(ignore_sysret)
24036 CFI_STARTPROC
24037 mov $-ENOSYS,%eax
24038 sysret
24039 CFI_ENDPROC
24040-END(ignore_sysret)
24041+ENDPROC(ignore_sysret)
24042
24043 /*
24044 * End of kprobes section
24045diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
24046index 52819e8..b6d1dbd 100644
24047--- a/arch/x86/kernel/ftrace.c
24048+++ b/arch/x86/kernel/ftrace.c
24049@@ -104,6 +104,8 @@ ftrace_modify_code_direct(unsigned long ip, unsigned const char *old_code,
24050 {
24051 unsigned char replaced[MCOUNT_INSN_SIZE];
24052
24053+ ip = ktla_ktva(ip);
24054+
24055 /*
24056 * Note: Due to modules and __init, code can
24057 * disappear and change, we need to protect against faulting
24058@@ -229,7 +231,7 @@ static int update_ftrace_func(unsigned long ip, void *new)
24059 unsigned char old[MCOUNT_INSN_SIZE];
24060 int ret;
24061
24062- memcpy(old, (void *)ip, MCOUNT_INSN_SIZE);
24063+ memcpy(old, (void *)ktla_ktva(ip), MCOUNT_INSN_SIZE);
24064
24065 ftrace_update_func = ip;
24066 /* Make sure the breakpoints see the ftrace_update_func update */
24067@@ -306,7 +308,7 @@ static int ftrace_write(unsigned long ip, const char *val, int size)
24068 * kernel identity mapping to modify code.
24069 */
24070 if (within(ip, (unsigned long)_text, (unsigned long)_etext))
24071- ip = (unsigned long)__va(__pa_symbol(ip));
24072+ ip = (unsigned long)__va(__pa_symbol(ktla_ktva(ip)));
24073
24074 if (probe_kernel_write((void *)ip, val, size))
24075 return -EPERM;
24076@@ -319,7 +321,7 @@ static int add_break(unsigned long ip, const char *old)
24077 unsigned char replaced[MCOUNT_INSN_SIZE];
24078 unsigned char brk = BREAKPOINT_INSTRUCTION;
24079
24080- if (probe_kernel_read(replaced, (void *)ip, MCOUNT_INSN_SIZE))
24081+ if (probe_kernel_read(replaced, (void *)ktla_ktva(ip), MCOUNT_INSN_SIZE))
24082 return -EFAULT;
24083
24084 /* Make sure it is what we expect it to be */
24085diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
24086index 068054f..c248bcd 100644
24087--- a/arch/x86/kernel/head64.c
24088+++ b/arch/x86/kernel/head64.c
24089@@ -67,12 +67,12 @@ again:
24090 pgd = *pgd_p;
24091
24092 /*
24093- * The use of __START_KERNEL_map rather than __PAGE_OFFSET here is
24094- * critical -- __PAGE_OFFSET would point us back into the dynamic
24095+ * The use of __early_va rather than __va here is critical:
24096+ * __va would point us back into the dynamic
24097 * range and we might end up looping forever...
24098 */
24099 if (pgd)
24100- pud_p = (pudval_t *)((pgd & PTE_PFN_MASK) + __START_KERNEL_map - phys_base);
24101+ pud_p = (pudval_t *)(__early_va(pgd & PTE_PFN_MASK));
24102 else {
24103 if (next_early_pgt >= EARLY_DYNAMIC_PAGE_TABLES) {
24104 reset_early_page_tables();
24105@@ -82,13 +82,13 @@ again:
24106 pud_p = (pudval_t *)early_dynamic_pgts[next_early_pgt++];
24107 for (i = 0; i < PTRS_PER_PUD; i++)
24108 pud_p[i] = 0;
24109- *pgd_p = (pgdval_t)pud_p - __START_KERNEL_map + phys_base + _KERNPG_TABLE;
24110+ *pgd_p = (pgdval_t)__pa(pud_p) + _KERNPG_TABLE;
24111 }
24112 pud_p += pud_index(address);
24113 pud = *pud_p;
24114
24115 if (pud)
24116- pmd_p = (pmdval_t *)((pud & PTE_PFN_MASK) + __START_KERNEL_map - phys_base);
24117+ pmd_p = (pmdval_t *)(__early_va(pud & PTE_PFN_MASK));
24118 else {
24119 if (next_early_pgt >= EARLY_DYNAMIC_PAGE_TABLES) {
24120 reset_early_page_tables();
24121@@ -98,7 +98,7 @@ again:
24122 pmd_p = (pmdval_t *)early_dynamic_pgts[next_early_pgt++];
24123 for (i = 0; i < PTRS_PER_PMD; i++)
24124 pmd_p[i] = 0;
24125- *pud_p = (pudval_t)pmd_p - __START_KERNEL_map + phys_base + _KERNPG_TABLE;
24126+ *pud_p = (pudval_t)__pa(pmd_p) + _KERNPG_TABLE;
24127 }
24128 pmd = (physaddr & PMD_MASK) + early_pmd_flags;
24129 pmd_p[pmd_index(address)] = pmd;
24130@@ -175,7 +175,6 @@ asmlinkage __visible void __init x86_64_start_kernel(char * real_mode_data)
24131 if (console_loglevel == 10)
24132 early_printk("Kernel alive\n");
24133
24134- clear_page(init_level4_pgt);
24135 /* set init_level4_pgt kernel high mapping*/
24136 init_level4_pgt[511] = early_level4_pgt[511];
24137
24138diff --git a/arch/x86/kernel/head_32.S b/arch/x86/kernel/head_32.S
24139index f36bd42..56ee1534 100644
24140--- a/arch/x86/kernel/head_32.S
24141+++ b/arch/x86/kernel/head_32.S
24142@@ -26,6 +26,12 @@
24143 /* Physical address */
24144 #define pa(X) ((X) - __PAGE_OFFSET)
24145
24146+#ifdef CONFIG_PAX_KERNEXEC
24147+#define ta(X) (X)
24148+#else
24149+#define ta(X) ((X) - __PAGE_OFFSET)
24150+#endif
24151+
24152 /*
24153 * References to members of the new_cpu_data structure.
24154 */
24155@@ -55,11 +61,7 @@
24156 * and small than max_low_pfn, otherwise will waste some page table entries
24157 */
24158
24159-#if PTRS_PER_PMD > 1
24160-#define PAGE_TABLE_SIZE(pages) (((pages) / PTRS_PER_PMD) + PTRS_PER_PGD)
24161-#else
24162-#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PGD)
24163-#endif
24164+#define PAGE_TABLE_SIZE(pages) ((pages) / PTRS_PER_PTE)
24165
24166 /* Number of possible pages in the lowmem region */
24167 LOWMEM_PAGES = (((1<<32) - __PAGE_OFFSET) >> PAGE_SHIFT)
24168@@ -78,6 +80,12 @@ INIT_MAP_SIZE = PAGE_TABLE_SIZE(KERNEL_PAGES) * PAGE_SIZE
24169 RESERVE_BRK(pagetables, INIT_MAP_SIZE)
24170
24171 /*
24172+ * Real beginning of normal "text" segment
24173+ */
24174+ENTRY(stext)
24175+ENTRY(_stext)
24176+
24177+/*
24178 * 32-bit kernel entrypoint; only used by the boot CPU. On entry,
24179 * %esi points to the real-mode code as a 32-bit pointer.
24180 * CS and DS must be 4 GB flat segments, but we don't depend on
24181@@ -85,6 +93,13 @@ RESERVE_BRK(pagetables, INIT_MAP_SIZE)
24182 * can.
24183 */
24184 __HEAD
24185+
24186+#ifdef CONFIG_PAX_KERNEXEC
24187+ jmp startup_32
24188+/* PaX: fill first page in .text with int3 to catch NULL derefs in kernel mode */
24189+.fill PAGE_SIZE-5,1,0xcc
24190+#endif
24191+
24192 ENTRY(startup_32)
24193 movl pa(stack_start),%ecx
24194
24195@@ -106,6 +121,59 @@ ENTRY(startup_32)
24196 2:
24197 leal -__PAGE_OFFSET(%ecx),%esp
24198
24199+#ifdef CONFIG_SMP
24200+ movl $pa(cpu_gdt_table),%edi
24201+ movl $__per_cpu_load,%eax
24202+ movw %ax,GDT_ENTRY_PERCPU * 8 + 2(%edi)
24203+ rorl $16,%eax
24204+ movb %al,GDT_ENTRY_PERCPU * 8 + 4(%edi)
24205+ movb %ah,GDT_ENTRY_PERCPU * 8 + 7(%edi)
24206+ movl $__per_cpu_end - 1,%eax
24207+ subl $__per_cpu_start,%eax
24208+ movw %ax,GDT_ENTRY_PERCPU * 8 + 0(%edi)
24209+#endif
24210+
24211+#ifdef CONFIG_PAX_MEMORY_UDEREF
24212+ movl $NR_CPUS,%ecx
24213+ movl $pa(cpu_gdt_table),%edi
24214+1:
24215+ movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c09700),GDT_ENTRY_KERNEL_DS * 8 + 4(%edi)
24216+ movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0fb00),GDT_ENTRY_DEFAULT_USER_CS * 8 + 4(%edi)
24217+ movl $((((__PAGE_OFFSET-1) & 0xf0000000) >> 12) | 0x00c0f300),GDT_ENTRY_DEFAULT_USER_DS * 8 + 4(%edi)
24218+ addl $PAGE_SIZE_asm,%edi
24219+ loop 1b
24220+#endif
24221+
24222+#ifdef CONFIG_PAX_KERNEXEC
24223+ movl $pa(boot_gdt),%edi
24224+ movl $__LOAD_PHYSICAL_ADDR,%eax
24225+ movw %ax,GDT_ENTRY_BOOT_CS * 8 + 2(%edi)
24226+ rorl $16,%eax
24227+ movb %al,GDT_ENTRY_BOOT_CS * 8 + 4(%edi)
24228+ movb %ah,GDT_ENTRY_BOOT_CS * 8 + 7(%edi)
24229+ rorl $16,%eax
24230+
24231+ ljmp $(__BOOT_CS),$1f
24232+1:
24233+
24234+ movl $NR_CPUS,%ecx
24235+ movl $pa(cpu_gdt_table),%edi
24236+ addl $__PAGE_OFFSET,%eax
24237+1:
24238+ movb $0xc0,GDT_ENTRY_KERNEL_CS * 8 + 6(%edi)
24239+ movb $0xc0,GDT_ENTRY_KERNEXEC_KERNEL_CS * 8 + 6(%edi)
24240+ movw %ax,GDT_ENTRY_KERNEL_CS * 8 + 2(%edi)
24241+ movw %ax,GDT_ENTRY_KERNEXEC_KERNEL_CS * 8 + 2(%edi)
24242+ rorl $16,%eax
24243+ movb %al,GDT_ENTRY_KERNEL_CS * 8 + 4(%edi)
24244+ movb %al,GDT_ENTRY_KERNEXEC_KERNEL_CS * 8 + 4(%edi)
24245+ movb %ah,GDT_ENTRY_KERNEL_CS * 8 + 7(%edi)
24246+ movb %ah,GDT_ENTRY_KERNEXEC_KERNEL_CS * 8 + 7(%edi)
24247+ rorl $16,%eax
24248+ addl $PAGE_SIZE_asm,%edi
24249+ loop 1b
24250+#endif
24251+
24252 /*
24253 * Clear BSS first so that there are no surprises...
24254 */
24255@@ -201,8 +269,11 @@ ENTRY(startup_32)
24256 movl %eax, pa(max_pfn_mapped)
24257
24258 /* Do early initialization of the fixmap area */
24259- movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax
24260- movl %eax,pa(initial_pg_pmd+0x1000*KPMDS-8)
24261+#ifdef CONFIG_COMPAT_VDSO
24262+ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(initial_pg_pmd+0x1000*KPMDS-8)
24263+#else
24264+ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,pa(initial_pg_pmd+0x1000*KPMDS-8)
24265+#endif
24266 #else /* Not PAE */
24267
24268 page_pde_offset = (__PAGE_OFFSET >> 20);
24269@@ -232,8 +303,11 @@ page_pde_offset = (__PAGE_OFFSET >> 20);
24270 movl %eax, pa(max_pfn_mapped)
24271
24272 /* Do early initialization of the fixmap area */
24273- movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,%eax
24274- movl %eax,pa(initial_page_table+0xffc)
24275+#ifdef CONFIG_COMPAT_VDSO
24276+ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR+_PAGE_USER,pa(initial_page_table+0xffc)
24277+#else
24278+ movl $pa(initial_pg_fixmap)+PDE_IDENT_ATTR,pa(initial_page_table+0xffc)
24279+#endif
24280 #endif
24281
24282 #ifdef CONFIG_PARAVIRT
24283@@ -247,9 +321,7 @@ page_pde_offset = (__PAGE_OFFSET >> 20);
24284 cmpl $num_subarch_entries, %eax
24285 jae bad_subarch
24286
24287- movl pa(subarch_entries)(,%eax,4), %eax
24288- subl $__PAGE_OFFSET, %eax
24289- jmp *%eax
24290+ jmp *pa(subarch_entries)(,%eax,4)
24291
24292 bad_subarch:
24293 WEAK(lguest_entry)
24294@@ -261,10 +333,10 @@ WEAK(xen_entry)
24295 __INITDATA
24296
24297 subarch_entries:
24298- .long default_entry /* normal x86/PC */
24299- .long lguest_entry /* lguest hypervisor */
24300- .long xen_entry /* Xen hypervisor */
24301- .long default_entry /* Moorestown MID */
24302+ .long ta(default_entry) /* normal x86/PC */
24303+ .long ta(lguest_entry) /* lguest hypervisor */
24304+ .long ta(xen_entry) /* Xen hypervisor */
24305+ .long ta(default_entry) /* Moorestown MID */
24306 num_subarch_entries = (. - subarch_entries) / 4
24307 .previous
24308 #else
24309@@ -354,6 +426,7 @@ default_entry:
24310 movl pa(mmu_cr4_features),%eax
24311 movl %eax,%cr4
24312
24313+#ifdef CONFIG_X86_PAE
24314 testb $X86_CR4_PAE, %al # check if PAE is enabled
24315 jz enable_paging
24316
24317@@ -382,6 +455,9 @@ default_entry:
24318 /* Make changes effective */
24319 wrmsr
24320
24321+ btsl $_PAGE_BIT_NX-32,pa(__supported_pte_mask+4)
24322+#endif
24323+
24324 enable_paging:
24325
24326 /*
24327@@ -449,14 +525,20 @@ is486:
24328 1: movl $(__KERNEL_DS),%eax # reload all the segment registers
24329 movl %eax,%ss # after changing gdt.
24330
24331- movl $(__USER_DS),%eax # DS/ES contains default USER segment
24332+# movl $(__KERNEL_DS),%eax # DS/ES contains default KERNEL segment
24333 movl %eax,%ds
24334 movl %eax,%es
24335
24336 movl $(__KERNEL_PERCPU), %eax
24337 movl %eax,%fs # set this cpu's percpu
24338
24339+#ifdef CONFIG_CC_STACKPROTECTOR
24340 movl $(__KERNEL_STACK_CANARY),%eax
24341+#elif defined(CONFIG_PAX_MEMORY_UDEREF)
24342+ movl $(__USER_DS),%eax
24343+#else
24344+ xorl %eax,%eax
24345+#endif
24346 movl %eax,%gs
24347
24348 xorl %eax,%eax # Clear LDT
24349@@ -512,8 +594,11 @@ setup_once:
24350 * relocation. Manually set base address in stack canary
24351 * segment descriptor.
24352 */
24353- movl $gdt_page,%eax
24354+ movl $cpu_gdt_table,%eax
24355 movl $stack_canary,%ecx
24356+#ifdef CONFIG_SMP
24357+ addl $__per_cpu_load,%ecx
24358+#endif
24359 movw %cx, 8 * GDT_ENTRY_STACK_CANARY + 2(%eax)
24360 shrl $16, %ecx
24361 movb %cl, 8 * GDT_ENTRY_STACK_CANARY + 4(%eax)
24362@@ -548,7 +633,7 @@ ENTRY(early_idt_handler)
24363 cmpl $2,(%esp) # X86_TRAP_NMI
24364 je is_nmi # Ignore NMI
24365
24366- cmpl $2,%ss:early_recursion_flag
24367+ cmpl $1,%ss:early_recursion_flag
24368 je hlt_loop
24369 incl %ss:early_recursion_flag
24370
24371@@ -586,8 +671,8 @@ ENTRY(early_idt_handler)
24372 pushl (20+6*4)(%esp) /* trapno */
24373 pushl $fault_msg
24374 call printk
24375-#endif
24376 call dump_stack
24377+#endif
24378 hlt_loop:
24379 hlt
24380 jmp hlt_loop
24381@@ -607,8 +692,11 @@ ENDPROC(early_idt_handler)
24382 /* This is the default interrupt "handler" :-) */
24383 ALIGN
24384 ignore_int:
24385- cld
24386 #ifdef CONFIG_PRINTK
24387+ cmpl $2,%ss:early_recursion_flag
24388+ je hlt_loop
24389+ incl %ss:early_recursion_flag
24390+ cld
24391 pushl %eax
24392 pushl %ecx
24393 pushl %edx
24394@@ -617,9 +705,6 @@ ignore_int:
24395 movl $(__KERNEL_DS),%eax
24396 movl %eax,%ds
24397 movl %eax,%es
24398- cmpl $2,early_recursion_flag
24399- je hlt_loop
24400- incl early_recursion_flag
24401 pushl 16(%esp)
24402 pushl 24(%esp)
24403 pushl 32(%esp)
24404@@ -653,29 +738,34 @@ ENTRY(setup_once_ref)
24405 /*
24406 * BSS section
24407 */
24408-__PAGE_ALIGNED_BSS
24409- .align PAGE_SIZE
24410 #ifdef CONFIG_X86_PAE
24411+.section .initial_pg_pmd,"a",@progbits
24412 initial_pg_pmd:
24413 .fill 1024*KPMDS,4,0
24414 #else
24415+.section .initial_page_table,"a",@progbits
24416 ENTRY(initial_page_table)
24417 .fill 1024,4,0
24418 #endif
24419+.section .initial_pg_fixmap,"a",@progbits
24420 initial_pg_fixmap:
24421 .fill 1024,4,0
24422+.section .empty_zero_page,"a",@progbits
24423 ENTRY(empty_zero_page)
24424 .fill 4096,1,0
24425+.section .swapper_pg_dir,"a",@progbits
24426 ENTRY(swapper_pg_dir)
24427+#ifdef CONFIG_X86_PAE
24428+ .fill 4,8,0
24429+#else
24430 .fill 1024,4,0
24431+#endif
24432
24433 /*
24434 * This starts the data section.
24435 */
24436 #ifdef CONFIG_X86_PAE
24437-__PAGE_ALIGNED_DATA
24438- /* Page-aligned for the benefit of paravirt? */
24439- .align PAGE_SIZE
24440+.section .initial_page_table,"a",@progbits
24441 ENTRY(initial_page_table)
24442 .long pa(initial_pg_pmd+PGD_IDENT_ATTR),0 /* low identity map */
24443 # if KPMDS == 3
24444@@ -694,12 +784,20 @@ ENTRY(initial_page_table)
24445 # error "Kernel PMDs should be 1, 2 or 3"
24446 # endif
24447 .align PAGE_SIZE /* needs to be page-sized too */
24448+
24449+#ifdef CONFIG_PAX_PER_CPU_PGD
24450+ENTRY(cpu_pgd)
24451+ .rept 2*NR_CPUS
24452+ .fill 4,8,0
24453+ .endr
24454+#endif
24455+
24456 #endif
24457
24458 .data
24459 .balign 4
24460 ENTRY(stack_start)
24461- .long init_thread_union+THREAD_SIZE
24462+ .long init_thread_union+THREAD_SIZE-8
24463
24464 __INITRODATA
24465 int_msg:
24466@@ -727,7 +825,7 @@ fault_msg:
24467 * segment size, and 32-bit linear address value:
24468 */
24469
24470- .data
24471+.section .rodata,"a",@progbits
24472 .globl boot_gdt_descr
24473 .globl idt_descr
24474
24475@@ -736,7 +834,7 @@ fault_msg:
24476 .word 0 # 32 bit align gdt_desc.address
24477 boot_gdt_descr:
24478 .word __BOOT_DS+7
24479- .long boot_gdt - __PAGE_OFFSET
24480+ .long pa(boot_gdt)
24481
24482 .word 0 # 32-bit align idt_desc.address
24483 idt_descr:
24484@@ -747,7 +845,7 @@ idt_descr:
24485 .word 0 # 32 bit align gdt_desc.address
24486 ENTRY(early_gdt_descr)
24487 .word GDT_ENTRIES*8-1
24488- .long gdt_page /* Overwritten for secondary CPUs */
24489+ .long cpu_gdt_table /* Overwritten for secondary CPUs */
24490
24491 /*
24492 * The boot_gdt must mirror the equivalent in setup.S and is
24493@@ -756,5 +854,65 @@ ENTRY(early_gdt_descr)
24494 .align L1_CACHE_BYTES
24495 ENTRY(boot_gdt)
24496 .fill GDT_ENTRY_BOOT_CS,8,0
24497- .quad 0x00cf9a000000ffff /* kernel 4GB code at 0x00000000 */
24498- .quad 0x00cf92000000ffff /* kernel 4GB data at 0x00000000 */
24499+ .quad 0x00cf9b000000ffff /* kernel 4GB code at 0x00000000 */
24500+ .quad 0x00cf93000000ffff /* kernel 4GB data at 0x00000000 */
24501+
24502+ .align PAGE_SIZE_asm
24503+ENTRY(cpu_gdt_table)
24504+ .rept NR_CPUS
24505+ .quad 0x0000000000000000 /* NULL descriptor */
24506+ .quad 0x0000000000000000 /* 0x0b reserved */
24507+ .quad 0x0000000000000000 /* 0x13 reserved */
24508+ .quad 0x0000000000000000 /* 0x1b reserved */
24509+
24510+#ifdef CONFIG_PAX_KERNEXEC
24511+ .quad 0x00cf9b000000ffff /* 0x20 alternate kernel 4GB code at 0x00000000 */
24512+#else
24513+ .quad 0x0000000000000000 /* 0x20 unused */
24514+#endif
24515+
24516+ .quad 0x0000000000000000 /* 0x28 unused */
24517+ .quad 0x0000000000000000 /* 0x33 TLS entry 1 */
24518+ .quad 0x0000000000000000 /* 0x3b TLS entry 2 */
24519+ .quad 0x0000000000000000 /* 0x43 TLS entry 3 */
24520+ .quad 0x0000000000000000 /* 0x4b reserved */
24521+ .quad 0x0000000000000000 /* 0x53 reserved */
24522+ .quad 0x0000000000000000 /* 0x5b reserved */
24523+
24524+ .quad 0x00cf9b000000ffff /* 0x60 kernel 4GB code at 0x00000000 */
24525+ .quad 0x00cf93000000ffff /* 0x68 kernel 4GB data at 0x00000000 */
24526+ .quad 0x00cffb000000ffff /* 0x73 user 4GB code at 0x00000000 */
24527+ .quad 0x00cff3000000ffff /* 0x7b user 4GB data at 0x00000000 */
24528+
24529+ .quad 0x0000000000000000 /* 0x80 TSS descriptor */
24530+ .quad 0x0000000000000000 /* 0x88 LDT descriptor */
24531+
24532+ /*
24533+ * Segments used for calling PnP BIOS have byte granularity.
24534+ * The code segments and data segments have fixed 64k limits,
24535+ * the transfer segment sizes are set at run time.
24536+ */
24537+ .quad 0x00409b000000ffff /* 0x90 32-bit code */
24538+ .quad 0x00009b000000ffff /* 0x98 16-bit code */
24539+ .quad 0x000093000000ffff /* 0xa0 16-bit data */
24540+ .quad 0x0000930000000000 /* 0xa8 16-bit data */
24541+ .quad 0x0000930000000000 /* 0xb0 16-bit data */
24542+
24543+ /*
24544+ * The APM segments have byte granularity and their bases
24545+ * are set at run time. All have 64k limits.
24546+ */
24547+ .quad 0x00409b000000ffff /* 0xb8 APM CS code */
24548+ .quad 0x00009b000000ffff /* 0xc0 APM CS 16 code (16 bit) */
24549+ .quad 0x004093000000ffff /* 0xc8 APM DS data */
24550+
24551+ .quad 0x00c0930000000000 /* 0xd0 - ESPFIX SS */
24552+ .quad 0x0040930000000000 /* 0xd8 - PERCPU */
24553+ .quad 0x0040910000000017 /* 0xe0 - STACK_CANARY */
24554+ .quad 0x0000000000000000 /* 0xe8 - PCIBIOS_CS */
24555+ .quad 0x0000000000000000 /* 0xf0 - PCIBIOS_DS */
24556+ .quad 0x0000000000000000 /* 0xf8 - GDT entry 31: double-fault TSS */
24557+
24558+ /* Be sure this is zeroed to avoid false validations in Xen */
24559+ .fill PAGE_SIZE_asm - GDT_SIZE,1,0
24560+ .endr
24561diff --git a/arch/x86/kernel/head_64.S b/arch/x86/kernel/head_64.S
24562index a468c0a..c7dec74 100644
24563--- a/arch/x86/kernel/head_64.S
24564+++ b/arch/x86/kernel/head_64.S
24565@@ -20,6 +20,8 @@
24566 #include <asm/processor-flags.h>
24567 #include <asm/percpu.h>
24568 #include <asm/nops.h>
24569+#include <asm/cpufeature.h>
24570+#include <asm/alternative-asm.h>
24571
24572 #ifdef CONFIG_PARAVIRT
24573 #include <asm/asm-offsets.h>
24574@@ -41,6 +43,12 @@ L4_PAGE_OFFSET = pgd_index(__PAGE_OFFSET)
24575 L3_PAGE_OFFSET = pud_index(__PAGE_OFFSET)
24576 L4_START_KERNEL = pgd_index(__START_KERNEL_map)
24577 L3_START_KERNEL = pud_index(__START_KERNEL_map)
24578+L4_VMALLOC_START = pgd_index(VMALLOC_START)
24579+L3_VMALLOC_START = pud_index(VMALLOC_START)
24580+L4_VMALLOC_END = pgd_index(VMALLOC_END)
24581+L3_VMALLOC_END = pud_index(VMALLOC_END)
24582+L4_VMEMMAP_START = pgd_index(VMEMMAP_START)
24583+L3_VMEMMAP_START = pud_index(VMEMMAP_START)
24584
24585 .text
24586 __HEAD
24587@@ -89,11 +97,24 @@ startup_64:
24588 * Fixup the physical addresses in the page table
24589 */
24590 addq %rbp, early_level4_pgt + (L4_START_KERNEL*8)(%rip)
24591+ addq %rbp, init_level4_pgt + (L4_PAGE_OFFSET*8)(%rip)
24592+ addq %rbp, init_level4_pgt + (L4_VMALLOC_START*8)(%rip)
24593+ addq %rbp, init_level4_pgt + (L4_VMALLOC_END*8)(%rip)
24594+ addq %rbp, init_level4_pgt + (L4_VMEMMAP_START*8)(%rip)
24595+ addq %rbp, init_level4_pgt + (L4_START_KERNEL*8)(%rip)
24596
24597- addq %rbp, level3_kernel_pgt + (510*8)(%rip)
24598- addq %rbp, level3_kernel_pgt + (511*8)(%rip)
24599+ addq %rbp, level3_ident_pgt + (0*8)(%rip)
24600+#ifndef CONFIG_XEN
24601+ addq %rbp, level3_ident_pgt + (1*8)(%rip)
24602+#endif
24603+
24604+ addq %rbp, level3_vmemmap_pgt + (L3_VMEMMAP_START*8)(%rip)
24605+
24606+ addq %rbp, level3_kernel_pgt + (L3_START_KERNEL*8)(%rip)
24607+ addq %rbp, level3_kernel_pgt + ((L3_START_KERNEL+1)*8)(%rip)
24608
24609 addq %rbp, level2_fixmap_pgt + (506*8)(%rip)
24610+ addq %rbp, level2_fixmap_pgt + (507*8)(%rip)
24611
24612 /*
24613 * Set up the identity mapping for the switchover. These
24614@@ -177,8 +198,8 @@ ENTRY(secondary_startup_64)
24615 movq $(init_level4_pgt - __START_KERNEL_map), %rax
24616 1:
24617
24618- /* Enable PAE mode and PGE */
24619- movl $(X86_CR4_PAE | X86_CR4_PGE), %ecx
24620+ /* Enable PAE mode and PSE/PGE */
24621+ movl $(X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE), %ecx
24622 movq %rcx, %cr4
24623
24624 /* Setup early boot stage 4 level pagetables. */
24625@@ -199,10 +220,19 @@ ENTRY(secondary_startup_64)
24626 movl $MSR_EFER, %ecx
24627 rdmsr
24628 btsl $_EFER_SCE, %eax /* Enable System Call */
24629- btl $20,%edi /* No Execute supported? */
24630+ btl $(X86_FEATURE_NX & 31),%edi /* No Execute supported? */
24631 jnc 1f
24632 btsl $_EFER_NX, %eax
24633 btsq $_PAGE_BIT_NX,early_pmd_flags(%rip)
24634+#ifndef CONFIG_EFI
24635+ btsq $_PAGE_BIT_NX, init_level4_pgt + 8*L4_PAGE_OFFSET(%rip)
24636+#endif
24637+ btsq $_PAGE_BIT_NX, init_level4_pgt + 8*L4_VMALLOC_START(%rip)
24638+ btsq $_PAGE_BIT_NX, init_level4_pgt + 8*L4_VMALLOC_END(%rip)
24639+ btsq $_PAGE_BIT_NX, init_level4_pgt + 8*L4_VMEMMAP_START(%rip)
24640+ btsq $_PAGE_BIT_NX, level2_fixmap_pgt + 8*506(%rip)
24641+ btsq $_PAGE_BIT_NX, level2_fixmap_pgt + 8*507(%rip)
24642+ btsq $_PAGE_BIT_NX, __supported_pte_mask(%rip)
24643 1: wrmsr /* Make changes effective */
24644
24645 /* Setup cr0 */
24646@@ -282,6 +312,7 @@ ENTRY(secondary_startup_64)
24647 * REX.W + FF /5 JMP m16:64 Jump far, absolute indirect,
24648 * address given in m16:64.
24649 */
24650+ pax_set_fptr_mask
24651 movq initial_code(%rip),%rax
24652 pushq $0 # fake return address to stop unwinder
24653 pushq $__KERNEL_CS # set correct cs
24654@@ -313,7 +344,7 @@ ENDPROC(start_cpu0)
24655 .quad INIT_PER_CPU_VAR(irq_stack_union)
24656
24657 GLOBAL(stack_start)
24658- .quad init_thread_union+THREAD_SIZE-8
24659+ .quad init_thread_union+THREAD_SIZE-16
24660 .word 0
24661 __FINITDATA
24662
24663@@ -391,7 +422,7 @@ ENTRY(early_idt_handler)
24664 call dump_stack
24665 #ifdef CONFIG_KALLSYMS
24666 leaq early_idt_ripmsg(%rip),%rdi
24667- movq 40(%rsp),%rsi # %rip again
24668+ movq 88(%rsp),%rsi # %rip again
24669 call __print_symbol
24670 #endif
24671 #endif /* EARLY_PRINTK */
24672@@ -420,6 +451,7 @@ ENDPROC(early_idt_handler)
24673 early_recursion_flag:
24674 .long 0
24675
24676+ .section .rodata,"a",@progbits
24677 #ifdef CONFIG_EARLY_PRINTK
24678 early_idt_msg:
24679 .asciz "PANIC: early exception %02lx rip %lx:%lx error %lx cr2 %lx\n"
24680@@ -447,29 +479,52 @@ NEXT_PAGE(early_level4_pgt)
24681 NEXT_PAGE(early_dynamic_pgts)
24682 .fill 512*EARLY_DYNAMIC_PAGE_TABLES,8,0
24683
24684- .data
24685+ .section .rodata,"a",@progbits
24686
24687-#ifndef CONFIG_XEN
24688 NEXT_PAGE(init_level4_pgt)
24689- .fill 512,8,0
24690-#else
24691-NEXT_PAGE(init_level4_pgt)
24692- .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE
24693 .org init_level4_pgt + L4_PAGE_OFFSET*8, 0
24694 .quad level3_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE
24695+ .org init_level4_pgt + L4_VMALLOC_START*8, 0
24696+ .quad level3_vmalloc_start_pgt - __START_KERNEL_map + _KERNPG_TABLE
24697+ .org init_level4_pgt + L4_VMALLOC_END*8, 0
24698+ .quad level3_vmalloc_end_pgt - __START_KERNEL_map + _KERNPG_TABLE
24699+ .org init_level4_pgt + L4_VMEMMAP_START*8, 0
24700+ .quad level3_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE
24701 .org init_level4_pgt + L4_START_KERNEL*8, 0
24702 /* (2^48-(2*1024*1024*1024))/(2^39) = 511 */
24703 .quad level3_kernel_pgt - __START_KERNEL_map + _PAGE_TABLE
24704
24705+#ifdef CONFIG_PAX_PER_CPU_PGD
24706+NEXT_PAGE(cpu_pgd)
24707+ .rept 2*NR_CPUS
24708+ .fill 512,8,0
24709+ .endr
24710+#endif
24711+
24712 NEXT_PAGE(level3_ident_pgt)
24713 .quad level2_ident_pgt - __START_KERNEL_map + _KERNPG_TABLE
24714+#ifdef CONFIG_XEN
24715 .fill 511, 8, 0
24716+#else
24717+ .quad level2_ident_pgt + PAGE_SIZE - __START_KERNEL_map + _KERNPG_TABLE
24718+ .fill 510,8,0
24719+#endif
24720+
24721+NEXT_PAGE(level3_vmalloc_start_pgt)
24722+ .fill 512,8,0
24723+
24724+NEXT_PAGE(level3_vmalloc_end_pgt)
24725+ .fill 512,8,0
24726+
24727+NEXT_PAGE(level3_vmemmap_pgt)
24728+ .fill L3_VMEMMAP_START,8,0
24729+ .quad level2_vmemmap_pgt - __START_KERNEL_map + _KERNPG_TABLE
24730+
24731 NEXT_PAGE(level2_ident_pgt)
24732- /* Since I easily can, map the first 1G.
24733+ /* Since I easily can, map the first 2G.
24734 * Don't set NX because code runs from these pages.
24735 */
24736- PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, PTRS_PER_PMD)
24737-#endif
24738+ PMDS(0, __PAGE_KERNEL_IDENT_LARGE_EXEC, 2*PTRS_PER_PMD)
24739
24740 NEXT_PAGE(level3_kernel_pgt)
24741 .fill L3_START_KERNEL,8,0
24742@@ -477,6 +532,9 @@ NEXT_PAGE(level3_kernel_pgt)
24743 .quad level2_kernel_pgt - __START_KERNEL_map + _KERNPG_TABLE
24744 .quad level2_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE
24745
24746+NEXT_PAGE(level2_vmemmap_pgt)
24747+ .fill 512,8,0
24748+
24749 NEXT_PAGE(level2_kernel_pgt)
24750 /*
24751 * 512 MB kernel mapping. We spend a full page on this pagetable
24752@@ -494,28 +552,64 @@ NEXT_PAGE(level2_kernel_pgt)
24753 NEXT_PAGE(level2_fixmap_pgt)
24754 .fill 506,8,0
24755 .quad level1_fixmap_pgt - __START_KERNEL_map + _PAGE_TABLE
24756- /* 8MB reserved for vsyscalls + a 2MB hole = 4 + 1 entries */
24757- .fill 5,8,0
24758+ .quad level1_vsyscall_pgt - __START_KERNEL_map + _PAGE_TABLE
24759+ /* 6MB reserved for vsyscalls + a 2MB hole = 3 + 1 entries */
24760+ .fill 4,8,0
24761
24762 NEXT_PAGE(level1_fixmap_pgt)
24763 .fill 512,8,0
24764
24765+NEXT_PAGE(level1_vsyscall_pgt)
24766+ .fill 512,8,0
24767+
24768 #undef PMDS
24769
24770- .data
24771+ .align PAGE_SIZE
24772+ENTRY(cpu_gdt_table)
24773+ .rept NR_CPUS
24774+ .quad 0x0000000000000000 /* NULL descriptor */
24775+ .quad 0x00cf9b000000ffff /* __KERNEL32_CS */
24776+ .quad 0x00af9b000000ffff /* __KERNEL_CS */
24777+ .quad 0x00cf93000000ffff /* __KERNEL_DS */
24778+ .quad 0x00cffb000000ffff /* __USER32_CS */
24779+ .quad 0x00cff3000000ffff /* __USER_DS, __USER32_DS */
24780+ .quad 0x00affb000000ffff /* __USER_CS */
24781+
24782+#ifdef CONFIG_PAX_KERNEXEC
24783+ .quad 0x00af9b000000ffff /* __KERNEXEC_KERNEL_CS */
24784+#else
24785+ .quad 0x0 /* unused */
24786+#endif
24787+
24788+ .quad 0,0 /* TSS */
24789+ .quad 0,0 /* LDT */
24790+ .quad 0,0,0 /* three TLS descriptors */
24791+ .quad 0x0000f40000000000 /* node/CPU stored in limit */
24792+ /* asm/segment.h:GDT_ENTRIES must match this */
24793+
24794+#ifdef CONFIG_PAX_MEMORY_UDEREF
24795+ .quad 0x00cf93000000ffff /* __UDEREF_KERNEL_DS */
24796+#else
24797+ .quad 0x0 /* unused */
24798+#endif
24799+
24800+ /* zero the remaining page */
24801+ .fill PAGE_SIZE / 8 - GDT_ENTRIES,8,0
24802+ .endr
24803+
24804 .align 16
24805 .globl early_gdt_descr
24806 early_gdt_descr:
24807 .word GDT_ENTRIES*8-1
24808 early_gdt_descr_base:
24809- .quad INIT_PER_CPU_VAR(gdt_page)
24810+ .quad cpu_gdt_table
24811
24812 ENTRY(phys_base)
24813 /* This must match the first entry in level2_kernel_pgt */
24814 .quad 0x0000000000000000
24815
24816 #include "../../x86/xen/xen-head.S"
24817-
24818- __PAGE_ALIGNED_BSS
24819+
24820+ .section .rodata,"a",@progbits
24821 NEXT_PAGE(empty_zero_page)
24822 .skip PAGE_SIZE
24823diff --git a/arch/x86/kernel/i386_ksyms_32.c b/arch/x86/kernel/i386_ksyms_32.c
24824index 05fd74f..c3548b1 100644
24825--- a/arch/x86/kernel/i386_ksyms_32.c
24826+++ b/arch/x86/kernel/i386_ksyms_32.c
24827@@ -20,8 +20,12 @@ extern void cmpxchg8b_emu(void);
24828 EXPORT_SYMBOL(cmpxchg8b_emu);
24829 #endif
24830
24831+EXPORT_SYMBOL_GPL(cpu_gdt_table);
24832+
24833 /* Networking helper routines. */
24834 EXPORT_SYMBOL(csum_partial_copy_generic);
24835+EXPORT_SYMBOL(csum_partial_copy_generic_to_user);
24836+EXPORT_SYMBOL(csum_partial_copy_generic_from_user);
24837
24838 EXPORT_SYMBOL(__get_user_1);
24839 EXPORT_SYMBOL(__get_user_2);
24840@@ -44,3 +48,11 @@ EXPORT_SYMBOL(___preempt_schedule);
24841 EXPORT_SYMBOL(___preempt_schedule_context);
24842 #endif
24843 #endif
24844+
24845+#ifdef CONFIG_PAX_KERNEXEC
24846+EXPORT_SYMBOL(__LOAD_PHYSICAL_ADDR);
24847+#endif
24848+
24849+#ifdef CONFIG_PAX_PER_CPU_PGD
24850+EXPORT_SYMBOL(cpu_pgd);
24851+#endif
24852diff --git a/arch/x86/kernel/i387.c b/arch/x86/kernel/i387.c
24853index d5dd808..b6432cf 100644
24854--- a/arch/x86/kernel/i387.c
24855+++ b/arch/x86/kernel/i387.c
24856@@ -51,7 +51,7 @@ static inline bool interrupted_kernel_fpu_idle(void)
24857 static inline bool interrupted_user_mode(void)
24858 {
24859 struct pt_regs *regs = get_irq_regs();
24860- return regs && user_mode_vm(regs);
24861+ return regs && user_mode(regs);
24862 }
24863
24864 /*
24865diff --git a/arch/x86/kernel/i8259.c b/arch/x86/kernel/i8259.c
24866index 2e977b5..5f2c273 100644
24867--- a/arch/x86/kernel/i8259.c
24868+++ b/arch/x86/kernel/i8259.c
24869@@ -110,7 +110,7 @@ static int i8259A_irq_pending(unsigned int irq)
24870 static void make_8259A_irq(unsigned int irq)
24871 {
24872 disable_irq_nosync(irq);
24873- io_apic_irqs &= ~(1<<irq);
24874+ io_apic_irqs &= ~(1UL<<irq);
24875 irq_set_chip_and_handler_name(irq, &i8259A_chip, handle_level_irq,
24876 i8259A_chip.name);
24877 enable_irq(irq);
24878@@ -209,7 +209,7 @@ spurious_8259A_irq:
24879 "spurious 8259A interrupt: IRQ%d.\n", irq);
24880 spurious_irq_mask |= irqmask;
24881 }
24882- atomic_inc(&irq_err_count);
24883+ atomic_inc_unchecked(&irq_err_count);
24884 /*
24885 * Theoretically we do not have to handle this IRQ,
24886 * but in Linux this does not cause problems and is
24887@@ -332,14 +332,16 @@ static void init_8259A(int auto_eoi)
24888 /* (slave's support for AEOI in flat mode is to be investigated) */
24889 outb_pic(SLAVE_ICW4_DEFAULT, PIC_SLAVE_IMR);
24890
24891+ pax_open_kernel();
24892 if (auto_eoi)
24893 /*
24894 * In AEOI mode we just have to mask the interrupt
24895 * when acking.
24896 */
24897- i8259A_chip.irq_mask_ack = disable_8259A_irq;
24898+ *(void **)&i8259A_chip.irq_mask_ack = disable_8259A_irq;
24899 else
24900- i8259A_chip.irq_mask_ack = mask_and_ack_8259A;
24901+ *(void **)&i8259A_chip.irq_mask_ack = mask_and_ack_8259A;
24902+ pax_close_kernel();
24903
24904 udelay(100); /* wait for 8259A to initialize */
24905
24906diff --git a/arch/x86/kernel/io_delay.c b/arch/x86/kernel/io_delay.c
24907index a979b5b..1d6db75 100644
24908--- a/arch/x86/kernel/io_delay.c
24909+++ b/arch/x86/kernel/io_delay.c
24910@@ -58,7 +58,7 @@ static int __init dmi_io_delay_0xed_port(const struct dmi_system_id *id)
24911 * Quirk table for systems that misbehave (lock up, etc.) if port
24912 * 0x80 is used:
24913 */
24914-static struct dmi_system_id __initdata io_delay_0xed_port_dmi_table[] = {
24915+static const struct dmi_system_id __initconst io_delay_0xed_port_dmi_table[] = {
24916 {
24917 .callback = dmi_io_delay_0xed_port,
24918 .ident = "Compaq Presario V6000",
24919diff --git a/arch/x86/kernel/ioport.c b/arch/x86/kernel/ioport.c
24920index 4ddaf66..49d5c18 100644
24921--- a/arch/x86/kernel/ioport.c
24922+++ b/arch/x86/kernel/ioport.c
24923@@ -6,6 +6,7 @@
24924 #include <linux/sched.h>
24925 #include <linux/kernel.h>
24926 #include <linux/capability.h>
24927+#include <linux/security.h>
24928 #include <linux/errno.h>
24929 #include <linux/types.h>
24930 #include <linux/ioport.h>
24931@@ -30,6 +31,12 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
24932 return -EINVAL;
24933 if (turn_on && !capable(CAP_SYS_RAWIO))
24934 return -EPERM;
24935+#ifdef CONFIG_GRKERNSEC_IO
24936+ if (turn_on && grsec_disable_privio) {
24937+ gr_handle_ioperm();
24938+ return -ENODEV;
24939+ }
24940+#endif
24941
24942 /*
24943 * If it's the first ioperm() call in this thread's lifetime, set the
24944@@ -54,7 +61,7 @@ asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int turn_on)
24945 * because the ->io_bitmap_max value must match the bitmap
24946 * contents:
24947 */
24948- tss = &per_cpu(init_tss, get_cpu());
24949+ tss = init_tss + get_cpu();
24950
24951 if (turn_on)
24952 bitmap_clear(t->io_bitmap_ptr, from, num);
24953@@ -105,6 +112,12 @@ SYSCALL_DEFINE1(iopl, unsigned int, level)
24954 if (level > old) {
24955 if (!capable(CAP_SYS_RAWIO))
24956 return -EPERM;
24957+#ifdef CONFIG_GRKERNSEC_IO
24958+ if (grsec_disable_privio) {
24959+ gr_handle_iopl();
24960+ return -ENODEV;
24961+ }
24962+#endif
24963 }
24964 regs->flags = (regs->flags & ~X86_EFLAGS_IOPL) | (level << 12);
24965 t->iopl = level << 12;
24966diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c
24967index 11ccfb0..ec1e46f 100644
24968--- a/arch/x86/kernel/irq.c
24969+++ b/arch/x86/kernel/irq.c
24970@@ -22,7 +22,7 @@
24971 #define CREATE_TRACE_POINTS
24972 #include <asm/trace/irq_vectors.h>
24973
24974-atomic_t irq_err_count;
24975+atomic_unchecked_t irq_err_count;
24976
24977 /* Function pointer for generic interrupt vector handling */
24978 void (*x86_platform_ipi_callback)(void) = NULL;
24979@@ -132,9 +132,9 @@ int arch_show_interrupts(struct seq_file *p, int prec)
24980 seq_printf(p, "%10u ", irq_stats(j)->irq_hv_callback_count);
24981 seq_printf(p, " Hypervisor callback interrupts\n");
24982 #endif
24983- seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read(&irq_err_count));
24984+ seq_printf(p, "%*s: %10u\n", prec, "ERR", atomic_read_unchecked(&irq_err_count));
24985 #if defined(CONFIG_X86_IO_APIC)
24986- seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read(&irq_mis_count));
24987+ seq_printf(p, "%*s: %10u\n", prec, "MIS", atomic_read_unchecked(&irq_mis_count));
24988 #endif
24989 return 0;
24990 }
24991@@ -174,7 +174,7 @@ u64 arch_irq_stat_cpu(unsigned int cpu)
24992
24993 u64 arch_irq_stat(void)
24994 {
24995- u64 sum = atomic_read(&irq_err_count);
24996+ u64 sum = atomic_read_unchecked(&irq_err_count);
24997 return sum;
24998 }
24999
25000diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c
25001index 63ce838..2ea3e06 100644
25002--- a/arch/x86/kernel/irq_32.c
25003+++ b/arch/x86/kernel/irq_32.c
25004@@ -29,6 +29,8 @@ EXPORT_PER_CPU_SYMBOL(irq_regs);
25005
25006 #ifdef CONFIG_DEBUG_STACKOVERFLOW
25007
25008+extern void gr_handle_kernel_exploit(void);
25009+
25010 int sysctl_panic_on_stackoverflow __read_mostly;
25011
25012 /* Debugging check for stack overflow: is there less than 1KB free? */
25013@@ -39,13 +41,14 @@ static int check_stack_overflow(void)
25014 __asm__ __volatile__("andl %%esp,%0" :
25015 "=r" (sp) : "0" (THREAD_SIZE - 1));
25016
25017- return sp < (sizeof(struct thread_info) + STACK_WARN);
25018+ return sp < STACK_WARN;
25019 }
25020
25021 static void print_stack_overflow(void)
25022 {
25023 printk(KERN_WARNING "low stack detected by irq handler\n");
25024 dump_stack();
25025+ gr_handle_kernel_exploit();
25026 if (sysctl_panic_on_stackoverflow)
25027 panic("low stack detected by irq handler - check messages\n");
25028 }
25029@@ -84,10 +87,9 @@ static inline void *current_stack(void)
25030 static inline int
25031 execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq)
25032 {
25033- struct irq_stack *curstk, *irqstk;
25034+ struct irq_stack *irqstk;
25035 u32 *isp, *prev_esp, arg1, arg2;
25036
25037- curstk = (struct irq_stack *) current_stack();
25038 irqstk = __this_cpu_read(hardirq_stack);
25039
25040 /*
25041@@ -96,15 +98,19 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq)
25042 * handler) we can't do that and just have to keep using the
25043 * current stack (which is the irq stack already after all)
25044 */
25045- if (unlikely(curstk == irqstk))
25046+ if (unlikely((void *)current_stack_pointer - (void *)irqstk < THREAD_SIZE))
25047 return 0;
25048
25049- isp = (u32 *) ((char *)irqstk + sizeof(*irqstk));
25050+ isp = (u32 *) ((char *)irqstk + sizeof(*irqstk) - 8);
25051
25052 /* Save the next esp at the bottom of the stack */
25053 prev_esp = (u32 *)irqstk;
25054 *prev_esp = current_stack_pointer;
25055
25056+#ifdef CONFIG_PAX_MEMORY_UDEREF
25057+ __set_fs(MAKE_MM_SEG(0));
25058+#endif
25059+
25060 if (unlikely(overflow))
25061 call_on_stack(print_stack_overflow, isp);
25062
25063@@ -115,6 +121,11 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq)
25064 : "0" (irq), "1" (desc), "2" (isp),
25065 "D" (desc->handle_irq)
25066 : "memory", "cc", "ecx");
25067+
25068+#ifdef CONFIG_PAX_MEMORY_UDEREF
25069+ __set_fs(current_thread_info()->addr_limit);
25070+#endif
25071+
25072 return 1;
25073 }
25074
25075@@ -123,32 +134,18 @@ execute_on_irq_stack(int overflow, struct irq_desc *desc, int irq)
25076 */
25077 void irq_ctx_init(int cpu)
25078 {
25079- struct irq_stack *irqstk;
25080-
25081 if (per_cpu(hardirq_stack, cpu))
25082 return;
25083
25084- irqstk = page_address(alloc_pages_node(cpu_to_node(cpu),
25085- THREADINFO_GFP,
25086- THREAD_SIZE_ORDER));
25087- per_cpu(hardirq_stack, cpu) = irqstk;
25088-
25089- irqstk = page_address(alloc_pages_node(cpu_to_node(cpu),
25090- THREADINFO_GFP,
25091- THREAD_SIZE_ORDER));
25092- per_cpu(softirq_stack, cpu) = irqstk;
25093-
25094- printk(KERN_DEBUG "CPU %u irqstacks, hard=%p soft=%p\n",
25095- cpu, per_cpu(hardirq_stack, cpu), per_cpu(softirq_stack, cpu));
25096+ per_cpu(hardirq_stack, cpu) = page_address(alloc_pages_node(cpu_to_node(cpu), THREADINFO_GFP, THREAD_SIZE_ORDER));
25097+ per_cpu(softirq_stack, cpu) = page_address(alloc_pages_node(cpu_to_node(cpu), THREADINFO_GFP, THREAD_SIZE_ORDER));
25098 }
25099
25100 void do_softirq_own_stack(void)
25101 {
25102- struct thread_info *curstk;
25103 struct irq_stack *irqstk;
25104 u32 *isp, *prev_esp;
25105
25106- curstk = current_stack();
25107 irqstk = __this_cpu_read(softirq_stack);
25108
25109 /* build the stack frame on the softirq stack */
25110@@ -158,7 +155,16 @@ void do_softirq_own_stack(void)
25111 prev_esp = (u32 *)irqstk;
25112 *prev_esp = current_stack_pointer;
25113
25114+#ifdef CONFIG_PAX_MEMORY_UDEREF
25115+ __set_fs(MAKE_MM_SEG(0));
25116+#endif
25117+
25118 call_on_stack(__do_softirq, isp);
25119+
25120+#ifdef CONFIG_PAX_MEMORY_UDEREF
25121+ __set_fs(current_thread_info()->addr_limit);
25122+#endif
25123+
25124 }
25125
25126 bool handle_irq(unsigned irq, struct pt_regs *regs)
25127@@ -172,7 +178,7 @@ bool handle_irq(unsigned irq, struct pt_regs *regs)
25128 if (unlikely(!desc))
25129 return false;
25130
25131- if (user_mode_vm(regs) || !execute_on_irq_stack(overflow, desc, irq)) {
25132+ if (user_mode(regs) || !execute_on_irq_stack(overflow, desc, irq)) {
25133 if (unlikely(overflow))
25134 print_stack_overflow();
25135 desc->handle_irq(irq, desc);
25136diff --git a/arch/x86/kernel/irq_64.c b/arch/x86/kernel/irq_64.c
25137index 4d1c746..55a22d6 100644
25138--- a/arch/x86/kernel/irq_64.c
25139+++ b/arch/x86/kernel/irq_64.c
25140@@ -26,6 +26,8 @@ EXPORT_PER_CPU_SYMBOL(irq_stat);
25141 DEFINE_PER_CPU(struct pt_regs *, irq_regs);
25142 EXPORT_PER_CPU_SYMBOL(irq_regs);
25143
25144+extern void gr_handle_kernel_exploit(void);
25145+
25146 int sysctl_panic_on_stackoverflow;
25147
25148 /*
25149@@ -44,7 +46,7 @@ static inline void stack_overflow_check(struct pt_regs *regs)
25150 u64 estack_top, estack_bottom;
25151 u64 curbase = (u64)task_stack_page(current);
25152
25153- if (user_mode_vm(regs))
25154+ if (user_mode(regs))
25155 return;
25156
25157 if (regs->sp >= curbase + sizeof(struct thread_info) +
25158@@ -69,6 +71,8 @@ static inline void stack_overflow_check(struct pt_regs *regs)
25159 irq_stack_top, irq_stack_bottom,
25160 estack_top, estack_bottom);
25161
25162+ gr_handle_kernel_exploit();
25163+
25164 if (sysctl_panic_on_stackoverflow)
25165 panic("low stack detected by irq handler - check messages\n");
25166 #endif
25167diff --git a/arch/x86/kernel/jump_label.c b/arch/x86/kernel/jump_label.c
25168index 26d5a55..a01160a 100644
25169--- a/arch/x86/kernel/jump_label.c
25170+++ b/arch/x86/kernel/jump_label.c
25171@@ -51,7 +51,7 @@ static void __jump_label_transform(struct jump_entry *entry,
25172 * Jump label is enabled for the first time.
25173 * So we expect a default_nop...
25174 */
25175- if (unlikely(memcmp((void *)entry->code, default_nop, 5)
25176+ if (unlikely(memcmp((void *)ktla_ktva(entry->code), default_nop, 5)
25177 != 0))
25178 bug_at((void *)entry->code, __LINE__);
25179 } else {
25180@@ -59,7 +59,7 @@ static void __jump_label_transform(struct jump_entry *entry,
25181 * ...otherwise expect an ideal_nop. Otherwise
25182 * something went horribly wrong.
25183 */
25184- if (unlikely(memcmp((void *)entry->code, ideal_nop, 5)
25185+ if (unlikely(memcmp((void *)ktla_ktva(entry->code), ideal_nop, 5)
25186 != 0))
25187 bug_at((void *)entry->code, __LINE__);
25188 }
25189@@ -75,13 +75,13 @@ static void __jump_label_transform(struct jump_entry *entry,
25190 * are converting the default nop to the ideal nop.
25191 */
25192 if (init) {
25193- if (unlikely(memcmp((void *)entry->code, default_nop, 5) != 0))
25194+ if (unlikely(memcmp((void *)ktla_ktva(entry->code), default_nop, 5) != 0))
25195 bug_at((void *)entry->code, __LINE__);
25196 } else {
25197 code.jump = 0xe9;
25198 code.offset = entry->target -
25199 (entry->code + JUMP_LABEL_NOP_SIZE);
25200- if (unlikely(memcmp((void *)entry->code, &code, 5) != 0))
25201+ if (unlikely(memcmp((void *)ktla_ktva(entry->code), &code, 5) != 0))
25202 bug_at((void *)entry->code, __LINE__);
25203 }
25204 memcpy(&code, ideal_nops[NOP_ATOMIC5], JUMP_LABEL_NOP_SIZE);
25205diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
25206index 7ec1d5f..5a7d130 100644
25207--- a/arch/x86/kernel/kgdb.c
25208+++ b/arch/x86/kernel/kgdb.c
25209@@ -126,11 +126,11 @@ char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs)
25210 #ifdef CONFIG_X86_32
25211 switch (regno) {
25212 case GDB_SS:
25213- if (!user_mode_vm(regs))
25214+ if (!user_mode(regs))
25215 *(unsigned long *)mem = __KERNEL_DS;
25216 break;
25217 case GDB_SP:
25218- if (!user_mode_vm(regs))
25219+ if (!user_mode(regs))
25220 *(unsigned long *)mem = kernel_stack_pointer(regs);
25221 break;
25222 case GDB_GS:
25223@@ -228,7 +228,10 @@ static void kgdb_correct_hw_break(void)
25224 bp->attr.bp_addr = breakinfo[breakno].addr;
25225 bp->attr.bp_len = breakinfo[breakno].len;
25226 bp->attr.bp_type = breakinfo[breakno].type;
25227- info->address = breakinfo[breakno].addr;
25228+ if (breakinfo[breakno].type == X86_BREAKPOINT_EXECUTE)
25229+ info->address = ktla_ktva(breakinfo[breakno].addr);
25230+ else
25231+ info->address = breakinfo[breakno].addr;
25232 info->len = breakinfo[breakno].len;
25233 info->type = breakinfo[breakno].type;
25234 val = arch_install_hw_breakpoint(bp);
25235@@ -475,12 +478,12 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
25236 case 'k':
25237 /* clear the trace bit */
25238 linux_regs->flags &= ~X86_EFLAGS_TF;
25239- atomic_set(&kgdb_cpu_doing_single_step, -1);
25240+ atomic_set_unchecked(&kgdb_cpu_doing_single_step, -1);
25241
25242 /* set the trace bit if we're stepping */
25243 if (remcomInBuffer[0] == 's') {
25244 linux_regs->flags |= X86_EFLAGS_TF;
25245- atomic_set(&kgdb_cpu_doing_single_step,
25246+ atomic_set_unchecked(&kgdb_cpu_doing_single_step,
25247 raw_smp_processor_id());
25248 }
25249
25250@@ -545,7 +548,7 @@ static int __kgdb_notify(struct die_args *args, unsigned long cmd)
25251
25252 switch (cmd) {
25253 case DIE_DEBUG:
25254- if (atomic_read(&kgdb_cpu_doing_single_step) != -1) {
25255+ if (atomic_read_unchecked(&kgdb_cpu_doing_single_step) != -1) {
25256 if (user_mode(regs))
25257 return single_step_cont(regs, args);
25258 break;
25259@@ -750,11 +753,11 @@ int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt)
25260 #endif /* CONFIG_DEBUG_RODATA */
25261
25262 bpt->type = BP_BREAKPOINT;
25263- err = probe_kernel_read(bpt->saved_instr, (char *)bpt->bpt_addr,
25264+ err = probe_kernel_read(bpt->saved_instr, ktla_ktva((char *)bpt->bpt_addr),
25265 BREAK_INSTR_SIZE);
25266 if (err)
25267 return err;
25268- err = probe_kernel_write((char *)bpt->bpt_addr,
25269+ err = probe_kernel_write(ktla_ktva((char *)bpt->bpt_addr),
25270 arch_kgdb_ops.gdb_bpt_instr, BREAK_INSTR_SIZE);
25271 #ifdef CONFIG_DEBUG_RODATA
25272 if (!err)
25273@@ -767,7 +770,7 @@ int kgdb_arch_set_breakpoint(struct kgdb_bkpt *bpt)
25274 return -EBUSY;
25275 text_poke((void *)bpt->bpt_addr, arch_kgdb_ops.gdb_bpt_instr,
25276 BREAK_INSTR_SIZE);
25277- err = probe_kernel_read(opc, (char *)bpt->bpt_addr, BREAK_INSTR_SIZE);
25278+ err = probe_kernel_read(opc, ktla_ktva((char *)bpt->bpt_addr), BREAK_INSTR_SIZE);
25279 if (err)
25280 return err;
25281 if (memcmp(opc, arch_kgdb_ops.gdb_bpt_instr, BREAK_INSTR_SIZE))
25282@@ -792,13 +795,13 @@ int kgdb_arch_remove_breakpoint(struct kgdb_bkpt *bpt)
25283 if (mutex_is_locked(&text_mutex))
25284 goto knl_write;
25285 text_poke((void *)bpt->bpt_addr, bpt->saved_instr, BREAK_INSTR_SIZE);
25286- err = probe_kernel_read(opc, (char *)bpt->bpt_addr, BREAK_INSTR_SIZE);
25287+ err = probe_kernel_read(opc, ktla_ktva((char *)bpt->bpt_addr), BREAK_INSTR_SIZE);
25288 if (err || memcmp(opc, bpt->saved_instr, BREAK_INSTR_SIZE))
25289 goto knl_write;
25290 return err;
25291 knl_write:
25292 #endif /* CONFIG_DEBUG_RODATA */
25293- return probe_kernel_write((char *)bpt->bpt_addr,
25294+ return probe_kernel_write(ktla_ktva((char *)bpt->bpt_addr),
25295 (char *)bpt->saved_instr, BREAK_INSTR_SIZE);
25296 }
25297
25298diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
25299index 61b17dc..784bfe9 100644
25300--- a/arch/x86/kernel/kprobes/core.c
25301+++ b/arch/x86/kernel/kprobes/core.c
25302@@ -119,9 +119,12 @@ static void __kprobes __synthesize_relative_insn(void *from, void *to, u8 op)
25303 s32 raddr;
25304 } __packed *insn;
25305
25306- insn = (struct __arch_relative_insn *)from;
25307+ insn = (struct __arch_relative_insn *)ktla_ktva(from);
25308+
25309+ pax_open_kernel();
25310 insn->raddr = (s32)((long)(to) - ((long)(from) + 5));
25311 insn->op = op;
25312+ pax_close_kernel();
25313 }
25314
25315 /* Insert a jump instruction at address 'from', which jumps to address 'to'.*/
25316@@ -164,7 +167,7 @@ int __kprobes can_boost(kprobe_opcode_t *opcodes)
25317 kprobe_opcode_t opcode;
25318 kprobe_opcode_t *orig_opcodes = opcodes;
25319
25320- if (search_exception_tables((unsigned long)opcodes))
25321+ if (search_exception_tables(ktva_ktla((unsigned long)opcodes)))
25322 return 0; /* Page fault may occur on this address. */
25323
25324 retry:
25325@@ -238,9 +241,9 @@ __recover_probed_insn(kprobe_opcode_t *buf, unsigned long addr)
25326 * for the first byte, we can recover the original instruction
25327 * from it and kp->opcode.
25328 */
25329- memcpy(buf, kp->addr, MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
25330+ memcpy(buf, ktla_ktva(kp->addr), MAX_INSN_SIZE * sizeof(kprobe_opcode_t));
25331 buf[0] = kp->opcode;
25332- return (unsigned long)buf;
25333+ return ktva_ktla((unsigned long)buf);
25334 }
25335
25336 /*
25337@@ -332,7 +335,9 @@ int __kprobes __copy_instruction(u8 *dest, u8 *src)
25338 /* Another subsystem puts a breakpoint, failed to recover */
25339 if (insn.opcode.bytes[0] == BREAKPOINT_INSTRUCTION)
25340 return 0;
25341+ pax_open_kernel();
25342 memcpy(dest, insn.kaddr, insn.length);
25343+ pax_close_kernel();
25344
25345 #ifdef CONFIG_X86_64
25346 if (insn_rip_relative(&insn)) {
25347@@ -359,7 +364,9 @@ int __kprobes __copy_instruction(u8 *dest, u8 *src)
25348 return 0;
25349 }
25350 disp = (u8 *) dest + insn_offset_displacement(&insn);
25351+ pax_open_kernel();
25352 *(s32 *) disp = (s32) newdisp;
25353+ pax_close_kernel();
25354 }
25355 #endif
25356 return insn.length;
25357@@ -498,7 +505,7 @@ setup_singlestep(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *k
25358 * nor set current_kprobe, because it doesn't use single
25359 * stepping.
25360 */
25361- regs->ip = (unsigned long)p->ainsn.insn;
25362+ regs->ip = ktva_ktla((unsigned long)p->ainsn.insn);
25363 preempt_enable_no_resched();
25364 return;
25365 }
25366@@ -515,9 +522,9 @@ setup_singlestep(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *k
25367 regs->flags &= ~X86_EFLAGS_IF;
25368 /* single step inline if the instruction is an int3 */
25369 if (p->opcode == BREAKPOINT_INSTRUCTION)
25370- regs->ip = (unsigned long)p->addr;
25371+ regs->ip = ktla_ktva((unsigned long)p->addr);
25372 else
25373- regs->ip = (unsigned long)p->ainsn.insn;
25374+ regs->ip = ktva_ktla((unsigned long)p->ainsn.insn);
25375 }
25376
25377 /*
25378@@ -596,7 +603,7 @@ static int __kprobes kprobe_handler(struct pt_regs *regs)
25379 setup_singlestep(p, regs, kcb, 0);
25380 return 1;
25381 }
25382- } else if (*addr != BREAKPOINT_INSTRUCTION) {
25383+ } else if (*(kprobe_opcode_t *)ktla_ktva((unsigned long)addr) != BREAKPOINT_INSTRUCTION) {
25384 /*
25385 * The breakpoint instruction was removed right
25386 * after we hit it. Another cpu has removed
25387@@ -642,6 +649,9 @@ static void __used __kprobes kretprobe_trampoline_holder(void)
25388 " movq %rax, 152(%rsp)\n"
25389 RESTORE_REGS_STRING
25390 " popfq\n"
25391+#ifdef KERNEXEC_PLUGIN
25392+ " btsq $63,(%rsp)\n"
25393+#endif
25394 #else
25395 " pushf\n"
25396 SAVE_REGS_STRING
25397@@ -779,7 +789,7 @@ static void __kprobes
25398 resume_execution(struct kprobe *p, struct pt_regs *regs, struct kprobe_ctlblk *kcb)
25399 {
25400 unsigned long *tos = stack_addr(regs);
25401- unsigned long copy_ip = (unsigned long)p->ainsn.insn;
25402+ unsigned long copy_ip = ktva_ktla((unsigned long)p->ainsn.insn);
25403 unsigned long orig_ip = (unsigned long)p->addr;
25404 kprobe_opcode_t *insn = p->ainsn.insn;
25405
25406@@ -959,7 +969,7 @@ kprobe_exceptions_notify(struct notifier_block *self, unsigned long val, void *d
25407 struct die_args *args = data;
25408 int ret = NOTIFY_DONE;
25409
25410- if (args->regs && user_mode_vm(args->regs))
25411+ if (args->regs && user_mode(args->regs))
25412 return ret;
25413
25414 switch (val) {
25415diff --git a/arch/x86/kernel/kprobes/opt.c b/arch/x86/kernel/kprobes/opt.c
25416index 898160b..758cde8 100644
25417--- a/arch/x86/kernel/kprobes/opt.c
25418+++ b/arch/x86/kernel/kprobes/opt.c
25419@@ -79,6 +79,7 @@ found:
25420 /* Insert a move instruction which sets a pointer to eax/rdi (1st arg). */
25421 static void __kprobes synthesize_set_arg1(kprobe_opcode_t *addr, unsigned long val)
25422 {
25423+ pax_open_kernel();
25424 #ifdef CONFIG_X86_64
25425 *addr++ = 0x48;
25426 *addr++ = 0xbf;
25427@@ -86,6 +87,7 @@ static void __kprobes synthesize_set_arg1(kprobe_opcode_t *addr, unsigned long v
25428 *addr++ = 0xb8;
25429 #endif
25430 *(unsigned long *)addr = val;
25431+ pax_close_kernel();
25432 }
25433
25434 asm (
25435@@ -335,7 +337,7 @@ int __kprobes arch_prepare_optimized_kprobe(struct optimized_kprobe *op)
25436 * Verify if the address gap is in 2GB range, because this uses
25437 * a relative jump.
25438 */
25439- rel = (long)op->optinsn.insn - (long)op->kp.addr + RELATIVEJUMP_SIZE;
25440+ rel = (long)op->optinsn.insn - ktla_ktva((long)op->kp.addr) + RELATIVEJUMP_SIZE;
25441 if (abs(rel) > 0x7fffffff)
25442 return -ERANGE;
25443
25444@@ -350,16 +352,18 @@ int __kprobes arch_prepare_optimized_kprobe(struct optimized_kprobe *op)
25445 op->optinsn.size = ret;
25446
25447 /* Copy arch-dep-instance from template */
25448- memcpy(buf, &optprobe_template_entry, TMPL_END_IDX);
25449+ pax_open_kernel();
25450+ memcpy(buf, ktla_ktva(&optprobe_template_entry), TMPL_END_IDX);
25451+ pax_close_kernel();
25452
25453 /* Set probe information */
25454 synthesize_set_arg1(buf + TMPL_MOVE_IDX, (unsigned long)op);
25455
25456 /* Set probe function call */
25457- synthesize_relcall(buf + TMPL_CALL_IDX, optimized_callback);
25458+ synthesize_relcall(ktva_ktla(buf) + TMPL_CALL_IDX, optimized_callback);
25459
25460 /* Set returning jmp instruction at the tail of out-of-line buffer */
25461- synthesize_reljump(buf + TMPL_END_IDX + op->optinsn.size,
25462+ synthesize_reljump(ktva_ktla(buf) + TMPL_END_IDX + op->optinsn.size,
25463 (u8 *)op->kp.addr + op->optinsn.size);
25464
25465 flush_icache_range((unsigned long) buf,
25466@@ -384,7 +388,7 @@ void __kprobes arch_optimize_kprobes(struct list_head *oplist)
25467 WARN_ON(kprobe_disabled(&op->kp));
25468
25469 /* Backup instructions which will be replaced by jump address */
25470- memcpy(op->optinsn.copied_insn, op->kp.addr + INT3_SIZE,
25471+ memcpy(op->optinsn.copied_insn, ktla_ktva(op->kp.addr) + INT3_SIZE,
25472 RELATIVE_ADDR_SIZE);
25473
25474 insn_buf[0] = RELATIVEJUMP_OPCODE;
25475@@ -433,7 +437,7 @@ setup_detour_execution(struct kprobe *p, struct pt_regs *regs, int reenter)
25476 /* This kprobe is really able to run optimized path. */
25477 op = container_of(p, struct optimized_kprobe, kp);
25478 /* Detour through copied instructions */
25479- regs->ip = (unsigned long)op->optinsn.insn + TMPL_END_IDX;
25480+ regs->ip = ktva_ktla((unsigned long)op->optinsn.insn) + TMPL_END_IDX;
25481 if (!reenter)
25482 reset_current_kprobe();
25483 preempt_enable_no_resched();
25484diff --git a/arch/x86/kernel/ksysfs.c b/arch/x86/kernel/ksysfs.c
25485index c2bedae..25e7ab60 100644
25486--- a/arch/x86/kernel/ksysfs.c
25487+++ b/arch/x86/kernel/ksysfs.c
25488@@ -184,7 +184,7 @@ out:
25489
25490 static struct kobj_attribute type_attr = __ATTR_RO(type);
25491
25492-static struct bin_attribute data_attr = {
25493+static bin_attribute_no_const data_attr __read_only = {
25494 .attr = {
25495 .name = "data",
25496 .mode = S_IRUGO,
25497diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
25498index dcbbaa1..81ae763 100644
25499--- a/arch/x86/kernel/ldt.c
25500+++ b/arch/x86/kernel/ldt.c
25501@@ -68,13 +68,13 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
25502 if (reload) {
25503 #ifdef CONFIG_SMP
25504 preempt_disable();
25505- load_LDT(pc);
25506+ load_LDT_nolock(pc);
25507 if (!cpumask_equal(mm_cpumask(current->mm),
25508 cpumask_of(smp_processor_id())))
25509 smp_call_function(flush_ldt, current->mm, 1);
25510 preempt_enable();
25511 #else
25512- load_LDT(pc);
25513+ load_LDT_nolock(pc);
25514 #endif
25515 }
25516 if (oldsize) {
25517@@ -96,7 +96,7 @@ static inline int copy_ldt(mm_context_t *new, mm_context_t *old)
25518 return err;
25519
25520 for (i = 0; i < old->size; i++)
25521- write_ldt_entry(new->ldt, i, old->ldt + i * LDT_ENTRY_SIZE);
25522+ write_ldt_entry(new->ldt, i, old->ldt + i);
25523 return 0;
25524 }
25525
25526@@ -117,6 +117,24 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
25527 retval = copy_ldt(&mm->context, &old_mm->context);
25528 mutex_unlock(&old_mm->context.lock);
25529 }
25530+
25531+ if (tsk == current) {
25532+ mm->context.vdso = 0;
25533+
25534+#ifdef CONFIG_X86_32
25535+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
25536+ mm->context.user_cs_base = 0UL;
25537+ mm->context.user_cs_limit = ~0UL;
25538+
25539+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_SMP)
25540+ cpus_clear(mm->context.cpu_user_cs_mask);
25541+#endif
25542+
25543+#endif
25544+#endif
25545+
25546+ }
25547+
25548 return retval;
25549 }
25550
25551@@ -231,6 +249,13 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
25552 }
25553 }
25554
25555+#ifdef CONFIG_PAX_SEGMEXEC
25556+ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (ldt_info.contents & MODIFY_LDT_CONTENTS_CODE)) {
25557+ error = -EINVAL;
25558+ goto out_unlock;
25559+ }
25560+#endif
25561+
25562 /*
25563 * On x86-64 we do not support 16-bit segments due to
25564 * IRET leaking the high bits of the kernel stack address.
25565diff --git a/arch/x86/kernel/machine_kexec_32.c b/arch/x86/kernel/machine_kexec_32.c
25566index 1667b1d..16492c5 100644
25567--- a/arch/x86/kernel/machine_kexec_32.c
25568+++ b/arch/x86/kernel/machine_kexec_32.c
25569@@ -25,7 +25,7 @@
25570 #include <asm/cacheflush.h>
25571 #include <asm/debugreg.h>
25572
25573-static void set_idt(void *newidt, __u16 limit)
25574+static void set_idt(struct desc_struct *newidt, __u16 limit)
25575 {
25576 struct desc_ptr curidt;
25577
25578@@ -37,7 +37,7 @@ static void set_idt(void *newidt, __u16 limit)
25579 }
25580
25581
25582-static void set_gdt(void *newgdt, __u16 limit)
25583+static void set_gdt(struct desc_struct *newgdt, __u16 limit)
25584 {
25585 struct desc_ptr curgdt;
25586
25587@@ -215,7 +215,7 @@ void machine_kexec(struct kimage *image)
25588 }
25589
25590 control_page = page_address(image->control_code_page);
25591- memcpy(control_page, relocate_kernel, KEXEC_CONTROL_CODE_MAX_SIZE);
25592+ memcpy(control_page, (void *)ktla_ktva((unsigned long)relocate_kernel), KEXEC_CONTROL_CODE_MAX_SIZE);
25593
25594 relocate_kernel_ptr = control_page;
25595 page_list[PA_CONTROL_PAGE] = __pa(control_page);
25596diff --git a/arch/x86/kernel/module.c b/arch/x86/kernel/module.c
25597index e69f988..da078ea 100644
25598--- a/arch/x86/kernel/module.c
25599+++ b/arch/x86/kernel/module.c
25600@@ -81,17 +81,62 @@ static unsigned long int get_module_load_offset(void)
25601 }
25602 #endif
25603
25604-void *module_alloc(unsigned long size)
25605+static inline void *__module_alloc(unsigned long size, pgprot_t prot)
25606 {
25607- if (PAGE_ALIGN(size) > MODULES_LEN)
25608+ if (!size || PAGE_ALIGN(size) > MODULES_LEN)
25609 return NULL;
25610 return __vmalloc_node_range(size, 1,
25611 MODULES_VADDR + get_module_load_offset(),
25612- MODULES_END, GFP_KERNEL | __GFP_HIGHMEM,
25613- PAGE_KERNEL_EXEC, NUMA_NO_NODE,
25614+ MODULES_END, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO,
25615+ prot, NUMA_NO_NODE,
25616 __builtin_return_address(0));
25617 }
25618
25619+void *module_alloc(unsigned long size)
25620+{
25621+
25622+#ifdef CONFIG_PAX_KERNEXEC
25623+ return __module_alloc(size, PAGE_KERNEL);
25624+#else
25625+ return __module_alloc(size, PAGE_KERNEL_EXEC);
25626+#endif
25627+
25628+}
25629+
25630+#ifdef CONFIG_PAX_KERNEXEC
25631+#ifdef CONFIG_X86_32
25632+void *module_alloc_exec(unsigned long size)
25633+{
25634+ struct vm_struct *area;
25635+
25636+ if (size == 0)
25637+ return NULL;
25638+
25639+ area = __get_vm_area(size, VM_ALLOC, (unsigned long)&MODULES_EXEC_VADDR, (unsigned long)&MODULES_EXEC_END);
25640+return area ? area->addr : NULL;
25641+}
25642+EXPORT_SYMBOL(module_alloc_exec);
25643+
25644+void module_free_exec(struct module *mod, void *module_region)
25645+{
25646+ vunmap(module_region);
25647+}
25648+EXPORT_SYMBOL(module_free_exec);
25649+#else
25650+void module_free_exec(struct module *mod, void *module_region)
25651+{
25652+ module_free(mod, module_region);
25653+}
25654+EXPORT_SYMBOL(module_free_exec);
25655+
25656+void *module_alloc_exec(unsigned long size)
25657+{
25658+ return __module_alloc(size, PAGE_KERNEL_RX);
25659+}
25660+EXPORT_SYMBOL(module_alloc_exec);
25661+#endif
25662+#endif
25663+
25664 #ifdef CONFIG_X86_32
25665 int apply_relocate(Elf32_Shdr *sechdrs,
25666 const char *strtab,
25667@@ -102,14 +147,16 @@ int apply_relocate(Elf32_Shdr *sechdrs,
25668 unsigned int i;
25669 Elf32_Rel *rel = (void *)sechdrs[relsec].sh_addr;
25670 Elf32_Sym *sym;
25671- uint32_t *location;
25672+ uint32_t *plocation, location;
25673
25674 DEBUGP("Applying relocate section %u to %u\n",
25675 relsec, sechdrs[relsec].sh_info);
25676 for (i = 0; i < sechdrs[relsec].sh_size / sizeof(*rel); i++) {
25677 /* This is where to make the change */
25678- location = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr
25679- + rel[i].r_offset;
25680+ plocation = (void *)sechdrs[sechdrs[relsec].sh_info].sh_addr + rel[i].r_offset;
25681+ location = (uint32_t)plocation;
25682+ if (sechdrs[sechdrs[relsec].sh_info].sh_flags & SHF_EXECINSTR)
25683+ plocation = ktla_ktva((void *)plocation);
25684 /* This is the symbol it is referring to. Note that all
25685 undefined symbols have been resolved. */
25686 sym = (Elf32_Sym *)sechdrs[symindex].sh_addr
25687@@ -118,11 +165,15 @@ int apply_relocate(Elf32_Shdr *sechdrs,
25688 switch (ELF32_R_TYPE(rel[i].r_info)) {
25689 case R_386_32:
25690 /* We add the value into the location given */
25691- *location += sym->st_value;
25692+ pax_open_kernel();
25693+ *plocation += sym->st_value;
25694+ pax_close_kernel();
25695 break;
25696 case R_386_PC32:
25697 /* Add the value, subtract its position */
25698- *location += sym->st_value - (uint32_t)location;
25699+ pax_open_kernel();
25700+ *plocation += sym->st_value - location;
25701+ pax_close_kernel();
25702 break;
25703 default:
25704 pr_err("%s: Unknown relocation: %u\n",
25705@@ -167,21 +218,30 @@ int apply_relocate_add(Elf64_Shdr *sechdrs,
25706 case R_X86_64_NONE:
25707 break;
25708 case R_X86_64_64:
25709+ pax_open_kernel();
25710 *(u64 *)loc = val;
25711+ pax_close_kernel();
25712 break;
25713 case R_X86_64_32:
25714+ pax_open_kernel();
25715 *(u32 *)loc = val;
25716+ pax_close_kernel();
25717 if (val != *(u32 *)loc)
25718 goto overflow;
25719 break;
25720 case R_X86_64_32S:
25721+ pax_open_kernel();
25722 *(s32 *)loc = val;
25723+ pax_close_kernel();
25724 if ((s64)val != *(s32 *)loc)
25725 goto overflow;
25726 break;
25727 case R_X86_64_PC32:
25728 val -= (u64)loc;
25729+ pax_open_kernel();
25730 *(u32 *)loc = val;
25731+ pax_close_kernel();
25732+
25733 #if 0
25734 if ((s64)val != *(s32 *)loc)
25735 goto overflow;
25736diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c
25737index c9603ac..9f88728 100644
25738--- a/arch/x86/kernel/msr.c
25739+++ b/arch/x86/kernel/msr.c
25740@@ -37,6 +37,7 @@
25741 #include <linux/notifier.h>
25742 #include <linux/uaccess.h>
25743 #include <linux/gfp.h>
25744+#include <linux/grsecurity.h>
25745
25746 #include <asm/processor.h>
25747 #include <asm/msr.h>
25748@@ -103,6 +104,11 @@ static ssize_t msr_write(struct file *file, const char __user *buf,
25749 int err = 0;
25750 ssize_t bytes = 0;
25751
25752+#ifdef CONFIG_GRKERNSEC_KMEM
25753+ gr_handle_msr_write();
25754+ return -EPERM;
25755+#endif
25756+
25757 if (count % 8)
25758 return -EINVAL; /* Invalid chunk size */
25759
25760@@ -150,6 +156,10 @@ static long msr_ioctl(struct file *file, unsigned int ioc, unsigned long arg)
25761 err = -EBADF;
25762 break;
25763 }
25764+#ifdef CONFIG_GRKERNSEC_KMEM
25765+ gr_handle_msr_write();
25766+ return -EPERM;
25767+#endif
25768 if (copy_from_user(&regs, uregs, sizeof regs)) {
25769 err = -EFAULT;
25770 break;
25771@@ -233,7 +243,7 @@ static int msr_class_cpu_callback(struct notifier_block *nfb,
25772 return notifier_from_errno(err);
25773 }
25774
25775-static struct notifier_block __refdata msr_class_cpu_notifier = {
25776+static struct notifier_block msr_class_cpu_notifier = {
25777 .notifier_call = msr_class_cpu_callback,
25778 };
25779
25780diff --git a/arch/x86/kernel/nmi.c b/arch/x86/kernel/nmi.c
25781index b4872b9..5bf0684 100644
25782--- a/arch/x86/kernel/nmi.c
25783+++ b/arch/x86/kernel/nmi.c
25784@@ -98,16 +98,16 @@ fs_initcall(nmi_warning_debugfs);
25785
25786 static void nmi_max_handler(struct irq_work *w)
25787 {
25788- struct nmiaction *a = container_of(w, struct nmiaction, irq_work);
25789+ struct nmiwork *n = container_of(w, struct nmiwork, irq_work);
25790 int remainder_ns, decimal_msecs;
25791- u64 whole_msecs = ACCESS_ONCE(a->max_duration);
25792+ u64 whole_msecs = ACCESS_ONCE(n->max_duration);
25793
25794 remainder_ns = do_div(whole_msecs, (1000 * 1000));
25795 decimal_msecs = remainder_ns / 1000;
25796
25797 printk_ratelimited(KERN_INFO
25798 "INFO: NMI handler (%ps) took too long to run: %lld.%03d msecs\n",
25799- a->handler, whole_msecs, decimal_msecs);
25800+ n->action->handler, whole_msecs, decimal_msecs);
25801 }
25802
25803 static int __kprobes nmi_handle(unsigned int type, struct pt_regs *regs, bool b2b)
25804@@ -134,11 +134,11 @@ static int __kprobes nmi_handle(unsigned int type, struct pt_regs *regs, bool b2
25805 delta = sched_clock() - delta;
25806 trace_nmi_handler(a->handler, (int)delta, thishandled);
25807
25808- if (delta < nmi_longest_ns || delta < a->max_duration)
25809+ if (delta < nmi_longest_ns || delta < a->work->max_duration)
25810 continue;
25811
25812- a->max_duration = delta;
25813- irq_work_queue(&a->irq_work);
25814+ a->work->max_duration = delta;
25815+ irq_work_queue(&a->work->irq_work);
25816 }
25817
25818 rcu_read_unlock();
25819@@ -147,7 +147,7 @@ static int __kprobes nmi_handle(unsigned int type, struct pt_regs *regs, bool b2
25820 return handled;
25821 }
25822
25823-int __register_nmi_handler(unsigned int type, struct nmiaction *action)
25824+int __register_nmi_handler(unsigned int type, const struct nmiaction *action)
25825 {
25826 struct nmi_desc *desc = nmi_to_desc(type);
25827 unsigned long flags;
25828@@ -155,7 +155,8 @@ int __register_nmi_handler(unsigned int type, struct nmiaction *action)
25829 if (!action->handler)
25830 return -EINVAL;
25831
25832- init_irq_work(&action->irq_work, nmi_max_handler);
25833+ action->work->action = action;
25834+ init_irq_work(&action->work->irq_work, nmi_max_handler);
25835
25836 spin_lock_irqsave(&desc->lock, flags);
25837
25838@@ -173,9 +174,9 @@ int __register_nmi_handler(unsigned int type, struct nmiaction *action)
25839 * event confuses some handlers (kdump uses this flag)
25840 */
25841 if (action->flags & NMI_FLAG_FIRST)
25842- list_add_rcu(&action->list, &desc->head);
25843+ pax_list_add_rcu((struct list_head *)&action->list, &desc->head);
25844 else
25845- list_add_tail_rcu(&action->list, &desc->head);
25846+ pax_list_add_tail_rcu((struct list_head *)&action->list, &desc->head);
25847
25848 spin_unlock_irqrestore(&desc->lock, flags);
25849 return 0;
25850@@ -198,7 +199,7 @@ void unregister_nmi_handler(unsigned int type, const char *name)
25851 if (!strcmp(n->name, name)) {
25852 WARN(in_nmi(),
25853 "Trying to free NMI (%s) from NMI context!\n", n->name);
25854- list_del_rcu(&n->list);
25855+ pax_list_del_rcu((struct list_head *)&n->list);
25856 break;
25857 }
25858 }
25859@@ -523,6 +524,17 @@ static inline void nmi_nesting_postprocess(void)
25860 dotraplinkage notrace __kprobes void
25861 do_nmi(struct pt_regs *regs, long error_code)
25862 {
25863+
25864+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
25865+ if (!user_mode(regs)) {
25866+ unsigned long cs = regs->cs & 0xFFFF;
25867+ unsigned long ip = ktva_ktla(regs->ip);
25868+
25869+ if ((cs == __KERNEL_CS || cs == __KERNEXEC_KERNEL_CS) && ip <= (unsigned long)_etext)
25870+ regs->ip = ip;
25871+ }
25872+#endif
25873+
25874 nmi_nesting_preprocess(regs);
25875
25876 nmi_enter();
25877diff --git a/arch/x86/kernel/nmi_selftest.c b/arch/x86/kernel/nmi_selftest.c
25878index 6d9582e..f746287 100644
25879--- a/arch/x86/kernel/nmi_selftest.c
25880+++ b/arch/x86/kernel/nmi_selftest.c
25881@@ -43,7 +43,7 @@ static void __init init_nmi_testsuite(void)
25882 {
25883 /* trap all the unknown NMIs we may generate */
25884 register_nmi_handler(NMI_UNKNOWN, nmi_unk_cb, 0, "nmi_selftest_unk",
25885- __initdata);
25886+ __initconst);
25887 }
25888
25889 static void __init cleanup_nmi_testsuite(void)
25890@@ -66,7 +66,7 @@ static void __init test_nmi_ipi(struct cpumask *mask)
25891 unsigned long timeout;
25892
25893 if (register_nmi_handler(NMI_LOCAL, test_nmi_ipi_callback,
25894- NMI_FLAG_FIRST, "nmi_selftest", __initdata)) {
25895+ NMI_FLAG_FIRST, "nmi_selftest", __initconst)) {
25896 nmi_fail = FAILURE;
25897 return;
25898 }
25899diff --git a/arch/x86/kernel/paravirt-spinlocks.c b/arch/x86/kernel/paravirt-spinlocks.c
25900index bbb6c73..24a58ef 100644
25901--- a/arch/x86/kernel/paravirt-spinlocks.c
25902+++ b/arch/x86/kernel/paravirt-spinlocks.c
25903@@ -8,7 +8,7 @@
25904
25905 #include <asm/paravirt.h>
25906
25907-struct pv_lock_ops pv_lock_ops = {
25908+struct pv_lock_ops pv_lock_ops __read_only = {
25909 #ifdef CONFIG_SMP
25910 .lock_spinning = __PV_IS_CALLEE_SAVE(paravirt_nop),
25911 .unlock_kick = paravirt_nop,
25912diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
25913index 1b10af8..45bfbec 100644
25914--- a/arch/x86/kernel/paravirt.c
25915+++ b/arch/x86/kernel/paravirt.c
25916@@ -55,6 +55,9 @@ u64 _paravirt_ident_64(u64 x)
25917 {
25918 return x;
25919 }
25920+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE)
25921+PV_CALLEE_SAVE_REGS_THUNK(_paravirt_ident_64);
25922+#endif
25923
25924 void __init default_banner(void)
25925 {
25926@@ -141,16 +144,20 @@ unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf,
25927
25928 if (opfunc == NULL)
25929 /* If there's no function, patch it with a ud2a (BUG) */
25930- ret = paravirt_patch_insns(insnbuf, len, ud2a, ud2a+sizeof(ud2a));
25931- else if (opfunc == _paravirt_nop)
25932+ ret = paravirt_patch_insns(insnbuf, len, ktva_ktla(ud2a), ud2a+sizeof(ud2a));
25933+ else if (opfunc == (void *)_paravirt_nop)
25934 /* If the operation is a nop, then nop the callsite */
25935 ret = paravirt_patch_nop();
25936
25937 /* identity functions just return their single argument */
25938- else if (opfunc == _paravirt_ident_32)
25939+ else if (opfunc == (void *)_paravirt_ident_32)
25940 ret = paravirt_patch_ident_32(insnbuf, len);
25941- else if (opfunc == _paravirt_ident_64)
25942+ else if (opfunc == (void *)_paravirt_ident_64)
25943 ret = paravirt_patch_ident_64(insnbuf, len);
25944+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE)
25945+ else if (opfunc == (void *)__raw_callee_save__paravirt_ident_64)
25946+ ret = paravirt_patch_ident_64(insnbuf, len);
25947+#endif
25948
25949 else if (type == PARAVIRT_PATCH(pv_cpu_ops.iret) ||
25950 type == PARAVIRT_PATCH(pv_cpu_ops.irq_enable_sysexit) ||
25951@@ -175,7 +182,7 @@ unsigned paravirt_patch_insns(void *insnbuf, unsigned len,
25952 if (insn_len > len || start == NULL)
25953 insn_len = len;
25954 else
25955- memcpy(insnbuf, start, insn_len);
25956+ memcpy(insnbuf, ktla_ktva(start), insn_len);
25957
25958 return insn_len;
25959 }
25960@@ -299,7 +306,7 @@ enum paravirt_lazy_mode paravirt_get_lazy_mode(void)
25961 return this_cpu_read(paravirt_lazy_mode);
25962 }
25963
25964-struct pv_info pv_info = {
25965+struct pv_info pv_info __read_only = {
25966 .name = "bare hardware",
25967 .paravirt_enabled = 0,
25968 .kernel_rpl = 0,
25969@@ -310,16 +317,16 @@ struct pv_info pv_info = {
25970 #endif
25971 };
25972
25973-struct pv_init_ops pv_init_ops = {
25974+struct pv_init_ops pv_init_ops __read_only = {
25975 .patch = native_patch,
25976 };
25977
25978-struct pv_time_ops pv_time_ops = {
25979+struct pv_time_ops pv_time_ops __read_only = {
25980 .sched_clock = native_sched_clock,
25981 .steal_clock = native_steal_clock,
25982 };
25983
25984-__visible struct pv_irq_ops pv_irq_ops = {
25985+__visible struct pv_irq_ops pv_irq_ops __read_only = {
25986 .save_fl = __PV_IS_CALLEE_SAVE(native_save_fl),
25987 .restore_fl = __PV_IS_CALLEE_SAVE(native_restore_fl),
25988 .irq_disable = __PV_IS_CALLEE_SAVE(native_irq_disable),
25989@@ -331,7 +338,7 @@ __visible struct pv_irq_ops pv_irq_ops = {
25990 #endif
25991 };
25992
25993-__visible struct pv_cpu_ops pv_cpu_ops = {
25994+__visible struct pv_cpu_ops pv_cpu_ops __read_only = {
25995 .cpuid = native_cpuid,
25996 .get_debugreg = native_get_debugreg,
25997 .set_debugreg = native_set_debugreg,
25998@@ -389,21 +396,26 @@ __visible struct pv_cpu_ops pv_cpu_ops = {
25999 .end_context_switch = paravirt_nop,
26000 };
26001
26002-struct pv_apic_ops pv_apic_ops = {
26003+struct pv_apic_ops pv_apic_ops __read_only= {
26004 #ifdef CONFIG_X86_LOCAL_APIC
26005 .startup_ipi_hook = paravirt_nop,
26006 #endif
26007 };
26008
26009-#if defined(CONFIG_X86_32) && !defined(CONFIG_X86_PAE)
26010+#ifdef CONFIG_X86_32
26011+#ifdef CONFIG_X86_PAE
26012+/* 64-bit pagetable entries */
26013+#define PTE_IDENT PV_CALLEE_SAVE(_paravirt_ident_64)
26014+#else
26015 /* 32-bit pagetable entries */
26016 #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_32)
26017+#endif
26018 #else
26019 /* 64-bit pagetable entries */
26020 #define PTE_IDENT __PV_IS_CALLEE_SAVE(_paravirt_ident_64)
26021 #endif
26022
26023-struct pv_mmu_ops pv_mmu_ops = {
26024+struct pv_mmu_ops pv_mmu_ops __read_only = {
26025
26026 .read_cr2 = native_read_cr2,
26027 .write_cr2 = native_write_cr2,
26028@@ -453,6 +465,7 @@ struct pv_mmu_ops pv_mmu_ops = {
26029 .make_pud = PTE_IDENT,
26030
26031 .set_pgd = native_set_pgd,
26032+ .set_pgd_batched = native_set_pgd_batched,
26033 #endif
26034 #endif /* PAGETABLE_LEVELS >= 3 */
26035
26036@@ -473,6 +486,12 @@ struct pv_mmu_ops pv_mmu_ops = {
26037 },
26038
26039 .set_fixmap = native_set_fixmap,
26040+
26041+#ifdef CONFIG_PAX_KERNEXEC
26042+ .pax_open_kernel = native_pax_open_kernel,
26043+ .pax_close_kernel = native_pax_close_kernel,
26044+#endif
26045+
26046 };
26047
26048 EXPORT_SYMBOL_GPL(pv_time_ops);
26049diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
26050index 0497f71..7186c0d 100644
26051--- a/arch/x86/kernel/pci-calgary_64.c
26052+++ b/arch/x86/kernel/pci-calgary_64.c
26053@@ -1347,7 +1347,7 @@ static void __init get_tce_space_from_tar(void)
26054 tce_space = be64_to_cpu(readq(target));
26055 tce_space = tce_space & TAR_SW_BITS;
26056
26057- tce_space = tce_space & (~specified_table_size);
26058+ tce_space = tce_space & (~(unsigned long)specified_table_size);
26059 info->tce_space = (u64 *)__va(tce_space);
26060 }
26061 }
26062diff --git a/arch/x86/kernel/pci-iommu_table.c b/arch/x86/kernel/pci-iommu_table.c
26063index 35ccf75..7a15747 100644
26064--- a/arch/x86/kernel/pci-iommu_table.c
26065+++ b/arch/x86/kernel/pci-iommu_table.c
26066@@ -2,7 +2,7 @@
26067 #include <asm/iommu_table.h>
26068 #include <linux/string.h>
26069 #include <linux/kallsyms.h>
26070-
26071+#include <linux/sched.h>
26072
26073 #define DEBUG 1
26074
26075diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
26076index 6c483ba..d10ce2f 100644
26077--- a/arch/x86/kernel/pci-swiotlb.c
26078+++ b/arch/x86/kernel/pci-swiotlb.c
26079@@ -32,7 +32,7 @@ static void x86_swiotlb_free_coherent(struct device *dev, size_t size,
26080 void *vaddr, dma_addr_t dma_addr,
26081 struct dma_attrs *attrs)
26082 {
26083- swiotlb_free_coherent(dev, size, vaddr, dma_addr);
26084+ swiotlb_free_coherent(dev, size, vaddr, dma_addr, attrs);
26085 }
26086
26087 static struct dma_map_ops swiotlb_dma_ops = {
26088diff --git a/arch/x86/kernel/preempt.S b/arch/x86/kernel/preempt.S
26089index ca7f0d5..8996469 100644
26090--- a/arch/x86/kernel/preempt.S
26091+++ b/arch/x86/kernel/preempt.S
26092@@ -3,12 +3,14 @@
26093 #include <asm/dwarf2.h>
26094 #include <asm/asm.h>
26095 #include <asm/calling.h>
26096+#include <asm/alternative-asm.h>
26097
26098 ENTRY(___preempt_schedule)
26099 CFI_STARTPROC
26100 SAVE_ALL
26101 call preempt_schedule
26102 RESTORE_ALL
26103+ pax_force_retaddr
26104 ret
26105 CFI_ENDPROC
26106
26107@@ -19,6 +21,7 @@ ENTRY(___preempt_schedule_context)
26108 SAVE_ALL
26109 call preempt_schedule_context
26110 RESTORE_ALL
26111+ pax_force_retaddr
26112 ret
26113 CFI_ENDPROC
26114
26115diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
26116index 4505e2a..ae28b0d 100644
26117--- a/arch/x86/kernel/process.c
26118+++ b/arch/x86/kernel/process.c
26119@@ -36,7 +36,8 @@
26120 * section. Since TSS's are completely CPU-local, we want them
26121 * on exact cacheline boundaries, to eliminate cacheline ping-pong.
26122 */
26123-__visible DEFINE_PER_CPU_SHARED_ALIGNED(struct tss_struct, init_tss) = INIT_TSS;
26124+struct tss_struct init_tss[NR_CPUS] __visible ____cacheline_internodealigned_in_smp = { [0 ... NR_CPUS-1] = INIT_TSS };
26125+EXPORT_SYMBOL(init_tss);
26126
26127 #ifdef CONFIG_X86_64
26128 static DEFINE_PER_CPU(unsigned char, is_idle);
26129@@ -92,7 +93,7 @@ void arch_task_cache_init(void)
26130 task_xstate_cachep =
26131 kmem_cache_create("task_xstate", xstate_size,
26132 __alignof__(union thread_xstate),
26133- SLAB_PANIC | SLAB_NOTRACK, NULL);
26134+ SLAB_PANIC | SLAB_NOTRACK | SLAB_USERCOPY, NULL);
26135 }
26136
26137 /*
26138@@ -105,7 +106,7 @@ void exit_thread(void)
26139 unsigned long *bp = t->io_bitmap_ptr;
26140
26141 if (bp) {
26142- struct tss_struct *tss = &per_cpu(init_tss, get_cpu());
26143+ struct tss_struct *tss = init_tss + get_cpu();
26144
26145 t->io_bitmap_ptr = NULL;
26146 clear_thread_flag(TIF_IO_BITMAP);
26147@@ -125,6 +126,9 @@ void flush_thread(void)
26148 {
26149 struct task_struct *tsk = current;
26150
26151+#if defined(CONFIG_X86_32) && !defined(CONFIG_CC_STACKPROTECTOR) && !defined(CONFIG_PAX_MEMORY_UDEREF)
26152+ loadsegment(gs, 0);
26153+#endif
26154 flush_ptrace_hw_breakpoint(tsk);
26155 memset(tsk->thread.tls_array, 0, sizeof(tsk->thread.tls_array));
26156 drop_init_fpu(tsk);
26157@@ -271,7 +275,7 @@ static void __exit_idle(void)
26158 void exit_idle(void)
26159 {
26160 /* idle loop has pid 0 */
26161- if (current->pid)
26162+ if (task_pid_nr(current))
26163 return;
26164 __exit_idle();
26165 }
26166@@ -324,7 +328,7 @@ bool xen_set_default_idle(void)
26167 return ret;
26168 }
26169 #endif
26170-void stop_this_cpu(void *dummy)
26171+__noreturn void stop_this_cpu(void *dummy)
26172 {
26173 local_irq_disable();
26174 /*
26175@@ -453,16 +457,37 @@ static int __init idle_setup(char *str)
26176 }
26177 early_param("idle", idle_setup);
26178
26179-unsigned long arch_align_stack(unsigned long sp)
26180+#ifdef CONFIG_PAX_RANDKSTACK
26181+void pax_randomize_kstack(struct pt_regs *regs)
26182 {
26183- if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
26184- sp -= get_random_int() % 8192;
26185- return sp & ~0xf;
26186-}
26187+ struct thread_struct *thread = &current->thread;
26188+ unsigned long time;
26189
26190-unsigned long arch_randomize_brk(struct mm_struct *mm)
26191-{
26192- unsigned long range_end = mm->brk + 0x02000000;
26193- return randomize_range(mm->brk, range_end, 0) ? : mm->brk;
26194-}
26195+ if (!randomize_va_space)
26196+ return;
26197+
26198+ if (v8086_mode(regs))
26199+ return;
26200
26201+ rdtscl(time);
26202+
26203+ /* P4 seems to return a 0 LSB, ignore it */
26204+#ifdef CONFIG_MPENTIUM4
26205+ time &= 0x3EUL;
26206+ time <<= 2;
26207+#elif defined(CONFIG_X86_64)
26208+ time &= 0xFUL;
26209+ time <<= 4;
26210+#else
26211+ time &= 0x1FUL;
26212+ time <<= 3;
26213+#endif
26214+
26215+ thread->sp0 ^= time;
26216+ load_sp0(init_tss + smp_processor_id(), thread);
26217+
26218+#ifdef CONFIG_X86_64
26219+ this_cpu_write(kernel_stack, thread->sp0);
26220+#endif
26221+}
26222+#endif
26223diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
26224index 7bc86bb..0ea06e8 100644
26225--- a/arch/x86/kernel/process_32.c
26226+++ b/arch/x86/kernel/process_32.c
26227@@ -64,6 +64,7 @@ asmlinkage void ret_from_kernel_thread(void) __asm__("ret_from_kernel_thread");
26228 unsigned long thread_saved_pc(struct task_struct *tsk)
26229 {
26230 return ((unsigned long *)tsk->thread.sp)[3];
26231+//XXX return tsk->thread.eip;
26232 }
26233
26234 void __show_regs(struct pt_regs *regs, int all)
26235@@ -73,19 +74,18 @@ void __show_regs(struct pt_regs *regs, int all)
26236 unsigned long sp;
26237 unsigned short ss, gs;
26238
26239- if (user_mode_vm(regs)) {
26240+ if (user_mode(regs)) {
26241 sp = regs->sp;
26242 ss = regs->ss & 0xffff;
26243- gs = get_user_gs(regs);
26244 } else {
26245 sp = kernel_stack_pointer(regs);
26246 savesegment(ss, ss);
26247- savesegment(gs, gs);
26248 }
26249+ gs = get_user_gs(regs);
26250
26251 printk(KERN_DEFAULT "EIP: %04x:[<%08lx>] EFLAGS: %08lx CPU: %d\n",
26252 (u16)regs->cs, regs->ip, regs->flags,
26253- smp_processor_id());
26254+ raw_smp_processor_id());
26255 print_symbol("EIP is at %s\n", regs->ip);
26256
26257 printk(KERN_DEFAULT "EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
26258@@ -132,20 +132,21 @@ void release_thread(struct task_struct *dead_task)
26259 int copy_thread(unsigned long clone_flags, unsigned long sp,
26260 unsigned long arg, struct task_struct *p)
26261 {
26262- struct pt_regs *childregs = task_pt_regs(p);
26263+ struct pt_regs *childregs = task_stack_page(p) + THREAD_SIZE - sizeof(struct pt_regs) - 8;
26264 struct task_struct *tsk;
26265 int err;
26266
26267 p->thread.sp = (unsigned long) childregs;
26268 p->thread.sp0 = (unsigned long) (childregs+1);
26269+ p->tinfo.lowest_stack = (unsigned long)task_stack_page(p);
26270
26271 if (unlikely(p->flags & PF_KTHREAD)) {
26272 /* kernel thread */
26273 memset(childregs, 0, sizeof(struct pt_regs));
26274 p->thread.ip = (unsigned long) ret_from_kernel_thread;
26275- task_user_gs(p) = __KERNEL_STACK_CANARY;
26276- childregs->ds = __USER_DS;
26277- childregs->es = __USER_DS;
26278+ savesegment(gs, childregs->gs);
26279+ childregs->ds = __KERNEL_DS;
26280+ childregs->es = __KERNEL_DS;
26281 childregs->fs = __KERNEL_PERCPU;
26282 childregs->bx = sp; /* function */
26283 childregs->bp = arg;
26284@@ -252,7 +253,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
26285 struct thread_struct *prev = &prev_p->thread,
26286 *next = &next_p->thread;
26287 int cpu = smp_processor_id();
26288- struct tss_struct *tss = &per_cpu(init_tss, cpu);
26289+ struct tss_struct *tss = init_tss + cpu;
26290 fpu_switch_t fpu;
26291
26292 /* never put a printk in __switch_to... printk() calls wake_up*() indirectly */
26293@@ -276,6 +277,10 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
26294 */
26295 lazy_save_gs(prev->gs);
26296
26297+#ifdef CONFIG_PAX_MEMORY_UDEREF
26298+ __set_fs(task_thread_info(next_p)->addr_limit);
26299+#endif
26300+
26301 /*
26302 * Load the per-thread Thread-Local Storage descriptor.
26303 */
26304@@ -314,9 +319,9 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
26305 */
26306 arch_end_context_switch(next_p);
26307
26308- this_cpu_write(kernel_stack,
26309- (unsigned long)task_stack_page(next_p) +
26310- THREAD_SIZE - KERNEL_STACK_OFFSET);
26311+ this_cpu_write(current_task, next_p);
26312+ this_cpu_write(current_tinfo, &next_p->tinfo);
26313+ this_cpu_write(kernel_stack, next->sp0);
26314
26315 /*
26316 * Restore %gs if needed (which is common)
26317@@ -326,8 +331,6 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
26318
26319 switch_fpu_finish(next_p, fpu);
26320
26321- this_cpu_write(current_task, next_p);
26322-
26323 return prev_p;
26324 }
26325
26326@@ -357,4 +360,3 @@ unsigned long get_wchan(struct task_struct *p)
26327 } while (count++ < 16);
26328 return 0;
26329 }
26330-
26331diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
26332index 898d077..4c458ff 100644
26333--- a/arch/x86/kernel/process_64.c
26334+++ b/arch/x86/kernel/process_64.c
26335@@ -158,10 +158,11 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
26336 struct pt_regs *childregs;
26337 struct task_struct *me = current;
26338
26339- p->thread.sp0 = (unsigned long)task_stack_page(p) + THREAD_SIZE;
26340+ p->thread.sp0 = (unsigned long)task_stack_page(p) + THREAD_SIZE - 16;
26341 childregs = task_pt_regs(p);
26342 p->thread.sp = (unsigned long) childregs;
26343 p->thread.usersp = me->thread.usersp;
26344+ p->tinfo.lowest_stack = (unsigned long)task_stack_page(p);
26345 set_tsk_thread_flag(p, TIF_FORK);
26346 p->thread.fpu_counter = 0;
26347 p->thread.io_bitmap_ptr = NULL;
26348@@ -172,6 +173,8 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
26349 p->thread.fs = p->thread.fsindex ? 0 : me->thread.fs;
26350 savesegment(es, p->thread.es);
26351 savesegment(ds, p->thread.ds);
26352+ savesegment(ss, p->thread.ss);
26353+ BUG_ON(p->thread.ss == __UDEREF_KERNEL_DS);
26354 memset(p->thread.ptrace_bps, 0, sizeof(p->thread.ptrace_bps));
26355
26356 if (unlikely(p->flags & PF_KTHREAD)) {
26357@@ -280,7 +283,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
26358 struct thread_struct *prev = &prev_p->thread;
26359 struct thread_struct *next = &next_p->thread;
26360 int cpu = smp_processor_id();
26361- struct tss_struct *tss = &per_cpu(init_tss, cpu);
26362+ struct tss_struct *tss = init_tss + cpu;
26363 unsigned fsindex, gsindex;
26364 fpu_switch_t fpu;
26365
26366@@ -303,6 +306,9 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
26367 if (unlikely(next->ds | prev->ds))
26368 loadsegment(ds, next->ds);
26369
26370+ savesegment(ss, prev->ss);
26371+ if (unlikely(next->ss != prev->ss))
26372+ loadsegment(ss, next->ss);
26373
26374 /* We must save %fs and %gs before load_TLS() because
26375 * %fs and %gs may be cleared by load_TLS().
26376@@ -362,6 +368,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
26377 prev->usersp = this_cpu_read(old_rsp);
26378 this_cpu_write(old_rsp, next->usersp);
26379 this_cpu_write(current_task, next_p);
26380+ this_cpu_write(current_tinfo, &next_p->tinfo);
26381
26382 /*
26383 * If it were not for PREEMPT_ACTIVE we could guarantee that the
26384@@ -371,9 +378,7 @@ __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
26385 task_thread_info(prev_p)->saved_preempt_count = this_cpu_read(__preempt_count);
26386 this_cpu_write(__preempt_count, task_thread_info(next_p)->saved_preempt_count);
26387
26388- this_cpu_write(kernel_stack,
26389- (unsigned long)task_stack_page(next_p) +
26390- THREAD_SIZE - KERNEL_STACK_OFFSET);
26391+ this_cpu_write(kernel_stack, next->sp0);
26392
26393 /*
26394 * Now maybe reload the debug registers and handle I/O bitmaps
26395@@ -442,12 +447,11 @@ unsigned long get_wchan(struct task_struct *p)
26396 if (!p || p == current || p->state == TASK_RUNNING)
26397 return 0;
26398 stack = (unsigned long)task_stack_page(p);
26399- if (p->thread.sp < stack || p->thread.sp >= stack+THREAD_SIZE)
26400+ if (p->thread.sp < stack || p->thread.sp > stack+THREAD_SIZE-16-sizeof(u64))
26401 return 0;
26402 fp = *(u64 *)(p->thread.sp);
26403 do {
26404- if (fp < (unsigned long)stack ||
26405- fp >= (unsigned long)stack+THREAD_SIZE)
26406+ if (fp < stack || fp > stack+THREAD_SIZE-16-sizeof(u64))
26407 return 0;
26408 ip = *(u64 *)(fp+8);
26409 if (!in_sched_functions(ip))
26410diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
26411index 678c0ad..2fc2a7b 100644
26412--- a/arch/x86/kernel/ptrace.c
26413+++ b/arch/x86/kernel/ptrace.c
26414@@ -186,10 +186,10 @@ unsigned long kernel_stack_pointer(struct pt_regs *regs)
26415 unsigned long sp = (unsigned long)&regs->sp;
26416 u32 *prev_esp;
26417
26418- if (context == (sp & ~(THREAD_SIZE - 1)))
26419+ if (context == ((sp + 8) & ~(THREAD_SIZE - 1)))
26420 return sp;
26421
26422- prev_esp = (u32 *)(context);
26423+ prev_esp = *(u32 **)(context);
26424 if (prev_esp)
26425 return (unsigned long)prev_esp;
26426
26427@@ -452,6 +452,20 @@ static int putreg(struct task_struct *child,
26428 if (child->thread.gs != value)
26429 return do_arch_prctl(child, ARCH_SET_GS, value);
26430 return 0;
26431+
26432+ case offsetof(struct user_regs_struct,ip):
26433+ /*
26434+ * Protect against any attempt to set ip to an
26435+ * impossible address. There are dragons lurking if the
26436+ * address is noncanonical. (This explicitly allows
26437+ * setting ip to TASK_SIZE_MAX, because user code can do
26438+ * that all by itself by running off the end of its
26439+ * address space.
26440+ */
26441+ if (value > TASK_SIZE_MAX)
26442+ return -EIO;
26443+ break;
26444+
26445 #endif
26446 }
26447
26448@@ -588,7 +602,7 @@ static void ptrace_triggered(struct perf_event *bp,
26449 static unsigned long ptrace_get_dr7(struct perf_event *bp[])
26450 {
26451 int i;
26452- int dr7 = 0;
26453+ unsigned long dr7 = 0;
26454 struct arch_hw_breakpoint *info;
26455
26456 for (i = 0; i < HBP_NUM; i++) {
26457@@ -822,7 +836,7 @@ long arch_ptrace(struct task_struct *child, long request,
26458 unsigned long addr, unsigned long data)
26459 {
26460 int ret;
26461- unsigned long __user *datap = (unsigned long __user *)data;
26462+ unsigned long __user *datap = (__force unsigned long __user *)data;
26463
26464 switch (request) {
26465 /* read the word at location addr in the USER area. */
26466@@ -907,14 +921,14 @@ long arch_ptrace(struct task_struct *child, long request,
26467 if ((int) addr < 0)
26468 return -EIO;
26469 ret = do_get_thread_area(child, addr,
26470- (struct user_desc __user *)data);
26471+ (__force struct user_desc __user *) data);
26472 break;
26473
26474 case PTRACE_SET_THREAD_AREA:
26475 if ((int) addr < 0)
26476 return -EIO;
26477 ret = do_set_thread_area(child, addr,
26478- (struct user_desc __user *)data, 0);
26479+ (__force struct user_desc __user *) data, 0);
26480 break;
26481 #endif
26482
26483@@ -1292,7 +1306,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
26484
26485 #ifdef CONFIG_X86_64
26486
26487-static struct user_regset x86_64_regsets[] __read_mostly = {
26488+static user_regset_no_const x86_64_regsets[] __read_only = {
26489 [REGSET_GENERAL] = {
26490 .core_note_type = NT_PRSTATUS,
26491 .n = sizeof(struct user_regs_struct) / sizeof(long),
26492@@ -1333,7 +1347,7 @@ static const struct user_regset_view user_x86_64_view = {
26493 #endif /* CONFIG_X86_64 */
26494
26495 #if defined CONFIG_X86_32 || defined CONFIG_IA32_EMULATION
26496-static struct user_regset x86_32_regsets[] __read_mostly = {
26497+static user_regset_no_const x86_32_regsets[] __read_only = {
26498 [REGSET_GENERAL] = {
26499 .core_note_type = NT_PRSTATUS,
26500 .n = sizeof(struct user_regs_struct32) / sizeof(u32),
26501@@ -1386,7 +1400,7 @@ static const struct user_regset_view user_x86_32_view = {
26502 */
26503 u64 xstate_fx_sw_bytes[USER_XSTATE_FX_SW_WORDS];
26504
26505-void update_regset_xstate_info(unsigned int size, u64 xstate_mask)
26506+void __init update_regset_xstate_info(unsigned int size, u64 xstate_mask)
26507 {
26508 #ifdef CONFIG_X86_64
26509 x86_64_regsets[REGSET_XSTATE].n = size / sizeof(u64);
26510@@ -1421,7 +1435,7 @@ static void fill_sigtrap_info(struct task_struct *tsk,
26511 memset(info, 0, sizeof(*info));
26512 info->si_signo = SIGTRAP;
26513 info->si_code = si_code;
26514- info->si_addr = user_mode_vm(regs) ? (void __user *)regs->ip : NULL;
26515+ info->si_addr = user_mode(regs) ? (__force void __user *)regs->ip : NULL;
26516 }
26517
26518 void user_single_step_siginfo(struct task_struct *tsk,
26519@@ -1450,6 +1464,10 @@ void send_sigtrap(struct task_struct *tsk, struct pt_regs *regs,
26520 # define IS_IA32 0
26521 #endif
26522
26523+#ifdef CONFIG_GRKERNSEC_SETXID
26524+extern void gr_delayed_cred_worker(void);
26525+#endif
26526+
26527 /*
26528 * We must return the syscall number to actually look up in the table.
26529 * This can be -1L to skip running any syscall at all.
26530@@ -1460,6 +1478,11 @@ long syscall_trace_enter(struct pt_regs *regs)
26531
26532 user_exit();
26533
26534+#ifdef CONFIG_GRKERNSEC_SETXID
26535+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
26536+ gr_delayed_cred_worker();
26537+#endif
26538+
26539 /*
26540 * If we stepped into a sysenter/syscall insn, it trapped in
26541 * kernel mode; do_debug() cleared TF and set TIF_SINGLESTEP.
26542@@ -1515,6 +1538,11 @@ void syscall_trace_leave(struct pt_regs *regs)
26543 */
26544 user_exit();
26545
26546+#ifdef CONFIG_GRKERNSEC_SETXID
26547+ if (unlikely(test_and_clear_thread_flag(TIF_GRSEC_SETXID)))
26548+ gr_delayed_cred_worker();
26549+#endif
26550+
26551 audit_syscall_exit(regs);
26552
26553 if (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))
26554diff --git a/arch/x86/kernel/pvclock.c b/arch/x86/kernel/pvclock.c
26555index 2f355d2..e75ed0a 100644
26556--- a/arch/x86/kernel/pvclock.c
26557+++ b/arch/x86/kernel/pvclock.c
26558@@ -51,11 +51,11 @@ void pvclock_touch_watchdogs(void)
26559 reset_hung_task_detector();
26560 }
26561
26562-static atomic64_t last_value = ATOMIC64_INIT(0);
26563+static atomic64_unchecked_t last_value = ATOMIC64_INIT(0);
26564
26565 void pvclock_resume(void)
26566 {
26567- atomic64_set(&last_value, 0);
26568+ atomic64_set_unchecked(&last_value, 0);
26569 }
26570
26571 u8 pvclock_read_flags(struct pvclock_vcpu_time_info *src)
26572@@ -105,11 +105,11 @@ cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src)
26573 * updating at the same time, and one of them could be slightly behind,
26574 * making the assumption that last_value always go forward fail to hold.
26575 */
26576- last = atomic64_read(&last_value);
26577+ last = atomic64_read_unchecked(&last_value);
26578 do {
26579 if (ret < last)
26580 return last;
26581- last = atomic64_cmpxchg(&last_value, last, ret);
26582+ last = atomic64_cmpxchg_unchecked(&last_value, last, ret);
26583 } while (unlikely(last != ret));
26584
26585 return ret;
26586diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
26587index 52b1157..c6e67c4 100644
26588--- a/arch/x86/kernel/reboot.c
26589+++ b/arch/x86/kernel/reboot.c
26590@@ -68,6 +68,11 @@ static int __init set_bios_reboot(const struct dmi_system_id *d)
26591
26592 void __noreturn machine_real_restart(unsigned int type)
26593 {
26594+
26595+#if defined(CONFIG_X86_32) && (defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF))
26596+ struct desc_struct *gdt;
26597+#endif
26598+
26599 local_irq_disable();
26600
26601 /*
26602@@ -95,7 +100,29 @@ void __noreturn machine_real_restart(unsigned int type)
26603
26604 /* Jump to the identity-mapped low memory code */
26605 #ifdef CONFIG_X86_32
26606- asm volatile("jmpl *%0" : :
26607+
26608+#if defined(CONFIG_PAX_KERNEXEC) || defined(CONFIG_PAX_MEMORY_UDEREF)
26609+ gdt = get_cpu_gdt_table(smp_processor_id());
26610+ pax_open_kernel();
26611+#ifdef CONFIG_PAX_MEMORY_UDEREF
26612+ gdt[GDT_ENTRY_KERNEL_DS].type = 3;
26613+ gdt[GDT_ENTRY_KERNEL_DS].limit = 0xf;
26614+ loadsegment(ds, __KERNEL_DS);
26615+ loadsegment(es, __KERNEL_DS);
26616+ loadsegment(ss, __KERNEL_DS);
26617+#endif
26618+#ifdef CONFIG_PAX_KERNEXEC
26619+ gdt[GDT_ENTRY_KERNEL_CS].base0 = 0;
26620+ gdt[GDT_ENTRY_KERNEL_CS].base1 = 0;
26621+ gdt[GDT_ENTRY_KERNEL_CS].base2 = 0;
26622+ gdt[GDT_ENTRY_KERNEL_CS].limit0 = 0xffff;
26623+ gdt[GDT_ENTRY_KERNEL_CS].limit = 0xf;
26624+ gdt[GDT_ENTRY_KERNEL_CS].g = 1;
26625+#endif
26626+ pax_close_kernel();
26627+#endif
26628+
26629+ asm volatile("ljmpl *%0" : :
26630 "rm" (real_mode_header->machine_real_restart_asm),
26631 "a" (type));
26632 #else
26633@@ -486,7 +513,7 @@ void __attribute__((weak)) mach_reboot_fixups(void)
26634 * This means that this function can never return, it can misbehave
26635 * by not rebooting properly and hanging.
26636 */
26637-static void native_machine_emergency_restart(void)
26638+static void __noreturn native_machine_emergency_restart(void)
26639 {
26640 int i;
26641 int attempt = 0;
26642@@ -610,13 +637,13 @@ void native_machine_shutdown(void)
26643 #endif
26644 }
26645
26646-static void __machine_emergency_restart(int emergency)
26647+static void __noreturn __machine_emergency_restart(int emergency)
26648 {
26649 reboot_emergency = emergency;
26650 machine_ops.emergency_restart();
26651 }
26652
26653-static void native_machine_restart(char *__unused)
26654+static void __noreturn native_machine_restart(char *__unused)
26655 {
26656 pr_notice("machine restart\n");
26657
26658@@ -625,7 +652,7 @@ static void native_machine_restart(char *__unused)
26659 __machine_emergency_restart(0);
26660 }
26661
26662-static void native_machine_halt(void)
26663+static void __noreturn native_machine_halt(void)
26664 {
26665 /* Stop other cpus and apics */
26666 machine_shutdown();
26667@@ -635,7 +662,7 @@ static void native_machine_halt(void)
26668 stop_this_cpu(NULL);
26669 }
26670
26671-static void native_machine_power_off(void)
26672+static void __noreturn native_machine_power_off(void)
26673 {
26674 if (pm_power_off) {
26675 if (!reboot_force)
26676@@ -644,9 +671,10 @@ static void native_machine_power_off(void)
26677 }
26678 /* A fallback in case there is no PM info available */
26679 tboot_shutdown(TB_SHUTDOWN_HALT);
26680+ unreachable();
26681 }
26682
26683-struct machine_ops machine_ops = {
26684+struct machine_ops machine_ops __read_only = {
26685 .power_off = native_machine_power_off,
26686 .shutdown = native_machine_shutdown,
26687 .emergency_restart = native_machine_emergency_restart,
26688diff --git a/arch/x86/kernel/reboot_fixups_32.c b/arch/x86/kernel/reboot_fixups_32.c
26689index c8e41e9..64049ef 100644
26690--- a/arch/x86/kernel/reboot_fixups_32.c
26691+++ b/arch/x86/kernel/reboot_fixups_32.c
26692@@ -57,7 +57,7 @@ struct device_fixup {
26693 unsigned int vendor;
26694 unsigned int device;
26695 void (*reboot_fixup)(struct pci_dev *);
26696-};
26697+} __do_const;
26698
26699 /*
26700 * PCI ids solely used for fixups_table go here
26701diff --git a/arch/x86/kernel/relocate_kernel_64.S b/arch/x86/kernel/relocate_kernel_64.S
26702index 3fd2c69..a444264 100644
26703--- a/arch/x86/kernel/relocate_kernel_64.S
26704+++ b/arch/x86/kernel/relocate_kernel_64.S
26705@@ -96,8 +96,7 @@ relocate_kernel:
26706
26707 /* jump to identity mapped page */
26708 addq $(identity_mapped - relocate_kernel), %r8
26709- pushq %r8
26710- ret
26711+ jmp *%r8
26712
26713 identity_mapped:
26714 /* set return address to 0 if not preserving context */
26715diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
26716index 09c76d2..7f33fc2 100644
26717--- a/arch/x86/kernel/setup.c
26718+++ b/arch/x86/kernel/setup.c
26719@@ -110,6 +110,7 @@
26720 #include <asm/mce.h>
26721 #include <asm/alternative.h>
26722 #include <asm/prom.h>
26723+#include <asm/boot.h>
26724
26725 /*
26726 * max_low_pfn_mapped: highest direct mapped pfn under 4GB
26727@@ -205,12 +206,50 @@ EXPORT_SYMBOL(boot_cpu_data);
26728 #endif
26729
26730
26731-#if !defined(CONFIG_X86_PAE) || defined(CONFIG_X86_64)
26732-__visible unsigned long mmu_cr4_features;
26733+#ifdef CONFIG_X86_64
26734+__visible unsigned long mmu_cr4_features __read_only = X86_CR4_PSE | X86_CR4_PAE | X86_CR4_PGE;
26735+#elif defined(CONFIG_X86_PAE)
26736+__visible unsigned long mmu_cr4_features __read_only = X86_CR4_PAE;
26737 #else
26738-__visible unsigned long mmu_cr4_features = X86_CR4_PAE;
26739+__visible unsigned long mmu_cr4_features __read_only;
26740 #endif
26741
26742+void set_in_cr4(unsigned long mask)
26743+{
26744+ unsigned long cr4 = read_cr4();
26745+
26746+ if ((cr4 & mask) == mask && cr4 == mmu_cr4_features)
26747+ return;
26748+
26749+ pax_open_kernel();
26750+ mmu_cr4_features |= mask;
26751+ pax_close_kernel();
26752+
26753+ if (trampoline_cr4_features)
26754+ *trampoline_cr4_features = mmu_cr4_features;
26755+ cr4 |= mask;
26756+ write_cr4(cr4);
26757+}
26758+EXPORT_SYMBOL(set_in_cr4);
26759+
26760+void clear_in_cr4(unsigned long mask)
26761+{
26762+ unsigned long cr4 = read_cr4();
26763+
26764+ if (!(cr4 & mask) && cr4 == mmu_cr4_features)
26765+ return;
26766+
26767+ pax_open_kernel();
26768+ mmu_cr4_features &= ~mask;
26769+ pax_close_kernel();
26770+
26771+ if (trampoline_cr4_features)
26772+ *trampoline_cr4_features = mmu_cr4_features;
26773+ cr4 &= ~mask;
26774+ write_cr4(cr4);
26775+}
26776+EXPORT_SYMBOL(clear_in_cr4);
26777+
26778 /* Boot loader ID and version as integers, for the benefit of proc_dointvec */
26779 int bootloader_type, bootloader_version;
26780
26781@@ -772,7 +811,7 @@ static void __init trim_bios_range(void)
26782 * area (640->1Mb) as ram even though it is not.
26783 * take them out.
26784 */
26785- e820_remove_range(BIOS_BEGIN, BIOS_END - BIOS_BEGIN, E820_RAM, 1);
26786+ e820_remove_range(ISA_START_ADDRESS, ISA_END_ADDRESS - ISA_START_ADDRESS, E820_RAM, 1);
26787
26788 sanitize_e820_map(e820.map, ARRAY_SIZE(e820.map), &e820.nr_map);
26789 }
26790@@ -780,7 +819,7 @@ static void __init trim_bios_range(void)
26791 /* called before trim_bios_range() to spare extra sanitize */
26792 static void __init e820_add_kernel_range(void)
26793 {
26794- u64 start = __pa_symbol(_text);
26795+ u64 start = __pa_symbol(ktla_ktva(_text));
26796 u64 size = __pa_symbol(_end) - start;
26797
26798 /*
26799@@ -856,8 +895,12 @@ dump_kernel_offset(struct notifier_block *self, unsigned long v, void *p)
26800
26801 void __init setup_arch(char **cmdline_p)
26802 {
26803+#ifdef CONFIG_X86_32
26804+ memblock_reserve(LOAD_PHYSICAL_ADDR, __pa_symbol(__bss_stop) - LOAD_PHYSICAL_ADDR);
26805+#else
26806 memblock_reserve(__pa_symbol(_text),
26807 (unsigned long)__bss_stop - (unsigned long)_text);
26808+#endif
26809
26810 early_reserve_initrd();
26811
26812@@ -946,14 +989,14 @@ void __init setup_arch(char **cmdline_p)
26813
26814 if (!boot_params.hdr.root_flags)
26815 root_mountflags &= ~MS_RDONLY;
26816- init_mm.start_code = (unsigned long) _text;
26817- init_mm.end_code = (unsigned long) _etext;
26818+ init_mm.start_code = ktla_ktva((unsigned long) _text);
26819+ init_mm.end_code = ktla_ktva((unsigned long) _etext);
26820 init_mm.end_data = (unsigned long) _edata;
26821 init_mm.brk = _brk_end;
26822
26823- code_resource.start = __pa_symbol(_text);
26824- code_resource.end = __pa_symbol(_etext)-1;
26825- data_resource.start = __pa_symbol(_etext);
26826+ code_resource.start = __pa_symbol(ktla_ktva(_text));
26827+ code_resource.end = __pa_symbol(ktla_ktva(_etext))-1;
26828+ data_resource.start = __pa_symbol(_sdata);
26829 data_resource.end = __pa_symbol(_edata)-1;
26830 bss_resource.start = __pa_symbol(__bss_start);
26831 bss_resource.end = __pa_symbol(__bss_stop)-1;
26832diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
26833index 5cdff03..80fa283 100644
26834--- a/arch/x86/kernel/setup_percpu.c
26835+++ b/arch/x86/kernel/setup_percpu.c
26836@@ -21,19 +21,17 @@
26837 #include <asm/cpu.h>
26838 #include <asm/stackprotector.h>
26839
26840-DEFINE_PER_CPU_READ_MOSTLY(int, cpu_number);
26841+#ifdef CONFIG_SMP
26842+DEFINE_PER_CPU_READ_MOSTLY(unsigned int, cpu_number);
26843 EXPORT_PER_CPU_SYMBOL(cpu_number);
26844+#endif
26845
26846-#ifdef CONFIG_X86_64
26847 #define BOOT_PERCPU_OFFSET ((unsigned long)__per_cpu_load)
26848-#else
26849-#define BOOT_PERCPU_OFFSET 0
26850-#endif
26851
26852 DEFINE_PER_CPU(unsigned long, this_cpu_off) = BOOT_PERCPU_OFFSET;
26853 EXPORT_PER_CPU_SYMBOL(this_cpu_off);
26854
26855-unsigned long __per_cpu_offset[NR_CPUS] __read_mostly = {
26856+unsigned long __per_cpu_offset[NR_CPUS] __read_only = {
26857 [0 ... NR_CPUS-1] = BOOT_PERCPU_OFFSET,
26858 };
26859 EXPORT_SYMBOL(__per_cpu_offset);
26860@@ -66,7 +64,7 @@ static bool __init pcpu_need_numa(void)
26861 {
26862 #ifdef CONFIG_NEED_MULTIPLE_NODES
26863 pg_data_t *last = NULL;
26864- unsigned int cpu;
26865+ int cpu;
26866
26867 for_each_possible_cpu(cpu) {
26868 int node = early_cpu_to_node(cpu);
26869@@ -155,10 +153,10 @@ static inline void setup_percpu_segment(int cpu)
26870 {
26871 #ifdef CONFIG_X86_32
26872 struct desc_struct gdt;
26873+ unsigned long base = per_cpu_offset(cpu);
26874
26875- pack_descriptor(&gdt, per_cpu_offset(cpu), 0xFFFFF,
26876- 0x2 | DESCTYPE_S, 0x8);
26877- gdt.s = 1;
26878+ pack_descriptor(&gdt, base, (VMALLOC_END - base - 1) >> PAGE_SHIFT,
26879+ 0x83 | DESCTYPE_S, 0xC);
26880 write_gdt_entry(get_cpu_gdt_table(cpu),
26881 GDT_ENTRY_PERCPU, &gdt, DESCTYPE_S);
26882 #endif
26883@@ -219,6 +217,11 @@ void __init setup_per_cpu_areas(void)
26884 /* alrighty, percpu areas up and running */
26885 delta = (unsigned long)pcpu_base_addr - (unsigned long)__per_cpu_start;
26886 for_each_possible_cpu(cpu) {
26887+#ifdef CONFIG_CC_STACKPROTECTOR
26888+#ifdef CONFIG_X86_32
26889+ unsigned long canary = per_cpu(stack_canary.canary, cpu);
26890+#endif
26891+#endif
26892 per_cpu_offset(cpu) = delta + pcpu_unit_offsets[cpu];
26893 per_cpu(this_cpu_off, cpu) = per_cpu_offset(cpu);
26894 per_cpu(cpu_number, cpu) = cpu;
26895@@ -259,6 +262,12 @@ void __init setup_per_cpu_areas(void)
26896 */
26897 set_cpu_numa_node(cpu, early_cpu_to_node(cpu));
26898 #endif
26899+#ifdef CONFIG_CC_STACKPROTECTOR
26900+#ifdef CONFIG_X86_32
26901+ if (!cpu)
26902+ per_cpu(stack_canary.canary, cpu) = canary;
26903+#endif
26904+#endif
26905 /*
26906 * Up to this point, the boot CPU has been using .init.data
26907 * area. Reload any changed state for the boot CPU.
26908diff --git a/arch/x86/kernel/signal.c b/arch/x86/kernel/signal.c
26909index 9e5de68..16c53cb 100644
26910--- a/arch/x86/kernel/signal.c
26911+++ b/arch/x86/kernel/signal.c
26912@@ -190,7 +190,7 @@ static unsigned long align_sigframe(unsigned long sp)
26913 * Align the stack pointer according to the i386 ABI,
26914 * i.e. so that on function entry ((sp + 4) & 15) == 0.
26915 */
26916- sp = ((sp + 4) & -16ul) - 4;
26917+ sp = ((sp - 12) & -16ul) - 4;
26918 #else /* !CONFIG_X86_32 */
26919 sp = round_down(sp, 16) - 8;
26920 #endif
26921@@ -298,9 +298,9 @@ __setup_frame(int sig, struct ksignal *ksig, sigset_t *set,
26922 }
26923
26924 if (current->mm->context.vdso)
26925- restorer = VDSO32_SYMBOL(current->mm->context.vdso, sigreturn);
26926+ restorer = (__force void __user *)VDSO32_SYMBOL(current->mm->context.vdso, sigreturn);
26927 else
26928- restorer = &frame->retcode;
26929+ restorer = (void __user *)&frame->retcode;
26930 if (ksig->ka.sa.sa_flags & SA_RESTORER)
26931 restorer = ksig->ka.sa.sa_restorer;
26932
26933@@ -314,7 +314,7 @@ __setup_frame(int sig, struct ksignal *ksig, sigset_t *set,
26934 * reasons and because gdb uses it as a signature to notice
26935 * signal handler stack frames.
26936 */
26937- err |= __put_user(*((u64 *)&retcode), (u64 *)frame->retcode);
26938+ err |= __put_user(*((u64 *)&retcode), (u64 __user *)frame->retcode);
26939
26940 if (err)
26941 return -EFAULT;
26942@@ -361,7 +361,10 @@ static int __setup_rt_frame(int sig, struct ksignal *ksig,
26943 save_altstack_ex(&frame->uc.uc_stack, regs->sp);
26944
26945 /* Set up to return from userspace. */
26946- restorer = VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn);
26947+ if (current->mm->context.vdso)
26948+ restorer = (__force void __user *)VDSO32_SYMBOL(current->mm->context.vdso, rt_sigreturn);
26949+ else
26950+ restorer = (void __user *)&frame->retcode;
26951 if (ksig->ka.sa.sa_flags & SA_RESTORER)
26952 restorer = ksig->ka.sa.sa_restorer;
26953 put_user_ex(restorer, &frame->pretcode);
26954@@ -373,7 +376,7 @@ static int __setup_rt_frame(int sig, struct ksignal *ksig,
26955 * reasons and because gdb uses it as a signature to notice
26956 * signal handler stack frames.
26957 */
26958- put_user_ex(*((u64 *)&rt_retcode), (u64 *)frame->retcode);
26959+ put_user_ex(*((u64 *)&rt_retcode), (u64 __user *)frame->retcode);
26960 } put_user_catch(err);
26961
26962 err |= copy_siginfo_to_user(&frame->info, &ksig->info);
26963@@ -609,7 +612,12 @@ setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs)
26964 {
26965 int usig = signr_convert(ksig->sig);
26966 sigset_t *set = sigmask_to_save();
26967- compat_sigset_t *cset = (compat_sigset_t *) set;
26968+ sigset_t sigcopy;
26969+ compat_sigset_t *cset;
26970+
26971+ sigcopy = *set;
26972+
26973+ cset = (compat_sigset_t *) &sigcopy;
26974
26975 /* Set up the stack frame */
26976 if (is_ia32_frame()) {
26977@@ -620,7 +628,7 @@ setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs)
26978 } else if (is_x32_frame()) {
26979 return x32_setup_rt_frame(ksig, cset, regs);
26980 } else {
26981- return __setup_rt_frame(ksig->sig, ksig, set, regs);
26982+ return __setup_rt_frame(ksig->sig, ksig, &sigcopy, regs);
26983 }
26984 }
26985
26986diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c
26987index be8e1bd..a3d93fa 100644
26988--- a/arch/x86/kernel/smp.c
26989+++ b/arch/x86/kernel/smp.c
26990@@ -341,7 +341,7 @@ static int __init nonmi_ipi_setup(char *str)
26991
26992 __setup("nonmi_ipi", nonmi_ipi_setup);
26993
26994-struct smp_ops smp_ops = {
26995+struct smp_ops smp_ops __read_only = {
26996 .smp_prepare_boot_cpu = native_smp_prepare_boot_cpu,
26997 .smp_prepare_cpus = native_smp_prepare_cpus,
26998 .smp_cpus_done = native_smp_cpus_done,
26999diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
27000index ae2fd975..c0c8d10 100644
27001--- a/arch/x86/kernel/smpboot.c
27002+++ b/arch/x86/kernel/smpboot.c
27003@@ -230,14 +230,17 @@ static void notrace start_secondary(void *unused)
27004
27005 enable_start_cpu0 = 0;
27006
27007-#ifdef CONFIG_X86_32
27008+ /* otherwise gcc will move up smp_processor_id before the cpu_init */
27009+ barrier();
27010+
27011 /* switch away from the initial page table */
27012+#ifdef CONFIG_PAX_PER_CPU_PGD
27013+ load_cr3(get_cpu_pgd(smp_processor_id(), kernel));
27014+#else
27015 load_cr3(swapper_pg_dir);
27016+#endif
27017 __flush_tlb_all();
27018-#endif
27019
27020- /* otherwise gcc will move up smp_processor_id before the cpu_init */
27021- barrier();
27022 /*
27023 * Check TSC synchronization with the BP:
27024 */
27025@@ -757,8 +760,9 @@ static int do_boot_cpu(int apicid, int cpu, struct task_struct *idle)
27026 alternatives_enable_smp();
27027
27028 idle->thread.sp = (unsigned long) (((struct pt_regs *)
27029- (THREAD_SIZE + task_stack_page(idle))) - 1);
27030+ (THREAD_SIZE - 16 + task_stack_page(idle))) - 1);
27031 per_cpu(current_task, cpu) = idle;
27032+ per_cpu(current_tinfo, cpu) = &idle->tinfo;
27033
27034 #ifdef CONFIG_X86_32
27035 /* Stack for startup_32 can be just as for start_secondary onwards */
27036@@ -767,10 +771,10 @@ static int do_boot_cpu(int apicid, int cpu, struct task_struct *idle)
27037 clear_tsk_thread_flag(idle, TIF_FORK);
27038 initial_gs = per_cpu_offset(cpu);
27039 #endif
27040- per_cpu(kernel_stack, cpu) =
27041- (unsigned long)task_stack_page(idle) -
27042- KERNEL_STACK_OFFSET + THREAD_SIZE;
27043+ per_cpu(kernel_stack, cpu) = (unsigned long)task_stack_page(idle) - 16 + THREAD_SIZE;
27044+ pax_open_kernel();
27045 early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);
27046+ pax_close_kernel();
27047 initial_code = (unsigned long)start_secondary;
27048 stack_start = idle->thread.sp;
27049
27050@@ -916,6 +920,15 @@ int native_cpu_up(unsigned int cpu, struct task_struct *tidle)
27051 /* the FPU context is blank, nobody can own it */
27052 __cpu_disable_lazy_restore(cpu);
27053
27054+#ifdef CONFIG_PAX_PER_CPU_PGD
27055+ clone_pgd_range(get_cpu_pgd(cpu, kernel) + KERNEL_PGD_BOUNDARY,
27056+ swapper_pg_dir + KERNEL_PGD_BOUNDARY,
27057+ KERNEL_PGD_PTRS);
27058+ clone_pgd_range(get_cpu_pgd(cpu, user) + KERNEL_PGD_BOUNDARY,
27059+ swapper_pg_dir + KERNEL_PGD_BOUNDARY,
27060+ KERNEL_PGD_PTRS);
27061+#endif
27062+
27063 err = do_boot_cpu(apicid, cpu, tidle);
27064 if (err) {
27065 pr_err("do_boot_cpu failed(%d) to wakeup CPU#%u\n", err, cpu);
27066diff --git a/arch/x86/kernel/step.c b/arch/x86/kernel/step.c
27067index 9b4d51d..5d28b58 100644
27068--- a/arch/x86/kernel/step.c
27069+++ b/arch/x86/kernel/step.c
27070@@ -27,10 +27,10 @@ unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *re
27071 struct desc_struct *desc;
27072 unsigned long base;
27073
27074- seg &= ~7UL;
27075+ seg >>= 3;
27076
27077 mutex_lock(&child->mm->context.lock);
27078- if (unlikely((seg >> 3) >= child->mm->context.size))
27079+ if (unlikely(seg >= child->mm->context.size))
27080 addr = -1L; /* bogus selector, access would fault */
27081 else {
27082 desc = child->mm->context.ldt + seg;
27083@@ -42,7 +42,8 @@ unsigned long convert_ip_to_linear(struct task_struct *child, struct pt_regs *re
27084 addr += base;
27085 }
27086 mutex_unlock(&child->mm->context.lock);
27087- }
27088+ } else if (seg == __KERNEL_CS || seg == __KERNEXEC_KERNEL_CS)
27089+ addr = ktla_ktva(addr);
27090
27091 return addr;
27092 }
27093@@ -53,6 +54,9 @@ static int is_setting_trap_flag(struct task_struct *child, struct pt_regs *regs)
27094 unsigned char opcode[15];
27095 unsigned long addr = convert_ip_to_linear(child, regs);
27096
27097+ if (addr == -EINVAL)
27098+ return 0;
27099+
27100 copied = access_process_vm(child, addr, opcode, sizeof(opcode), 0);
27101 for (i = 0; i < copied; i++) {
27102 switch (opcode[i]) {
27103diff --git a/arch/x86/kernel/sys_i386_32.c b/arch/x86/kernel/sys_i386_32.c
27104new file mode 100644
27105index 0000000..5877189
27106--- /dev/null
27107+++ b/arch/x86/kernel/sys_i386_32.c
27108@@ -0,0 +1,189 @@
27109+/*
27110+ * This file contains various random system calls that
27111+ * have a non-standard calling sequence on the Linux/i386
27112+ * platform.
27113+ */
27114+
27115+#include <linux/errno.h>
27116+#include <linux/sched.h>
27117+#include <linux/mm.h>
27118+#include <linux/fs.h>
27119+#include <linux/smp.h>
27120+#include <linux/sem.h>
27121+#include <linux/msg.h>
27122+#include <linux/shm.h>
27123+#include <linux/stat.h>
27124+#include <linux/syscalls.h>
27125+#include <linux/mman.h>
27126+#include <linux/file.h>
27127+#include <linux/utsname.h>
27128+#include <linux/ipc.h>
27129+#include <linux/elf.h>
27130+
27131+#include <linux/uaccess.h>
27132+#include <linux/unistd.h>
27133+
27134+#include <asm/syscalls.h>
27135+
27136+int i386_mmap_check(unsigned long addr, unsigned long len, unsigned long flags)
27137+{
27138+ unsigned long pax_task_size = TASK_SIZE;
27139+
27140+#ifdef CONFIG_PAX_SEGMEXEC
27141+ if (current->mm->pax_flags & MF_PAX_SEGMEXEC)
27142+ pax_task_size = SEGMEXEC_TASK_SIZE;
27143+#endif
27144+
27145+ if (flags & MAP_FIXED)
27146+ if (len > pax_task_size || addr > pax_task_size - len)
27147+ return -EINVAL;
27148+
27149+ return 0;
27150+}
27151+
27152+/*
27153+ * Align a virtual address to avoid aliasing in the I$ on AMD F15h.
27154+ */
27155+static unsigned long get_align_mask(void)
27156+{
27157+ if (va_align.flags < 0 || !(va_align.flags & ALIGN_VA_32))
27158+ return 0;
27159+
27160+ if (!(current->flags & PF_RANDOMIZE))
27161+ return 0;
27162+
27163+ return va_align.mask;
27164+}
27165+
27166+unsigned long
27167+arch_get_unmapped_area(struct file *filp, unsigned long addr,
27168+ unsigned long len, unsigned long pgoff, unsigned long flags)
27169+{
27170+ struct mm_struct *mm = current->mm;
27171+ struct vm_area_struct *vma;
27172+ unsigned long pax_task_size = TASK_SIZE;
27173+ struct vm_unmapped_area_info info;
27174+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
27175+
27176+#ifdef CONFIG_PAX_SEGMEXEC
27177+ if (mm->pax_flags & MF_PAX_SEGMEXEC)
27178+ pax_task_size = SEGMEXEC_TASK_SIZE;
27179+#endif
27180+
27181+ pax_task_size -= PAGE_SIZE;
27182+
27183+ if (len > pax_task_size)
27184+ return -ENOMEM;
27185+
27186+ if (flags & MAP_FIXED)
27187+ return addr;
27188+
27189+#ifdef CONFIG_PAX_RANDMMAP
27190+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
27191+#endif
27192+
27193+ if (addr) {
27194+ addr = PAGE_ALIGN(addr);
27195+ if (pax_task_size - len >= addr) {
27196+ vma = find_vma(mm, addr);
27197+ if (check_heap_stack_gap(vma, addr, len, offset))
27198+ return addr;
27199+ }
27200+ }
27201+
27202+ info.flags = 0;
27203+ info.length = len;
27204+ info.align_mask = filp ? get_align_mask() : 0;
27205+ info.align_offset = pgoff << PAGE_SHIFT;
27206+ info.threadstack_offset = offset;
27207+
27208+#ifdef CONFIG_PAX_PAGEEXEC
27209+ if (!(__supported_pte_mask & _PAGE_NX) && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE)) {
27210+ info.low_limit = 0x00110000UL;
27211+ info.high_limit = mm->start_code;
27212+
27213+#ifdef CONFIG_PAX_RANDMMAP
27214+ if (mm->pax_flags & MF_PAX_RANDMMAP)
27215+ info.low_limit += mm->delta_mmap & 0x03FFF000UL;
27216+#endif
27217+
27218+ if (info.low_limit < info.high_limit) {
27219+ addr = vm_unmapped_area(&info);
27220+ if (!IS_ERR_VALUE(addr))
27221+ return addr;
27222+ }
27223+ } else
27224+#endif
27225+
27226+ info.low_limit = mm->mmap_base;
27227+ info.high_limit = pax_task_size;
27228+
27229+ return vm_unmapped_area(&info);
27230+}
27231+
27232+unsigned long
27233+arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
27234+ const unsigned long len, const unsigned long pgoff,
27235+ const unsigned long flags)
27236+{
27237+ struct vm_area_struct *vma;
27238+ struct mm_struct *mm = current->mm;
27239+ unsigned long addr = addr0, pax_task_size = TASK_SIZE;
27240+ struct vm_unmapped_area_info info;
27241+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
27242+
27243+#ifdef CONFIG_PAX_SEGMEXEC
27244+ if (mm->pax_flags & MF_PAX_SEGMEXEC)
27245+ pax_task_size = SEGMEXEC_TASK_SIZE;
27246+#endif
27247+
27248+ pax_task_size -= PAGE_SIZE;
27249+
27250+ /* requested length too big for entire address space */
27251+ if (len > pax_task_size)
27252+ return -ENOMEM;
27253+
27254+ if (flags & MAP_FIXED)
27255+ return addr;
27256+
27257+#ifdef CONFIG_PAX_PAGEEXEC
27258+ if (!(__supported_pte_mask & _PAGE_NX) && (mm->pax_flags & MF_PAX_PAGEEXEC) && (flags & MAP_EXECUTABLE))
27259+ goto bottomup;
27260+#endif
27261+
27262+#ifdef CONFIG_PAX_RANDMMAP
27263+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
27264+#endif
27265+
27266+ /* requesting a specific address */
27267+ if (addr) {
27268+ addr = PAGE_ALIGN(addr);
27269+ if (pax_task_size - len >= addr) {
27270+ vma = find_vma(mm, addr);
27271+ if (check_heap_stack_gap(vma, addr, len, offset))
27272+ return addr;
27273+ }
27274+ }
27275+
27276+ info.flags = VM_UNMAPPED_AREA_TOPDOWN;
27277+ info.length = len;
27278+ info.low_limit = PAGE_SIZE;
27279+ info.high_limit = mm->mmap_base;
27280+ info.align_mask = filp ? get_align_mask() : 0;
27281+ info.align_offset = pgoff << PAGE_SHIFT;
27282+ info.threadstack_offset = offset;
27283+
27284+ addr = vm_unmapped_area(&info);
27285+ if (!(addr & ~PAGE_MASK))
27286+ return addr;
27287+ VM_BUG_ON(addr != -ENOMEM);
27288+
27289+bottomup:
27290+ /*
27291+ * A failed mmap() very likely causes application failure,
27292+ * so fall back to the bottom-up function here. This scenario
27293+ * can happen with large stack limits and large mmap()
27294+ * allocations.
27295+ */
27296+ return arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
27297+}
27298diff --git a/arch/x86/kernel/sys_x86_64.c b/arch/x86/kernel/sys_x86_64.c
27299index 30277e2..5664a29 100644
27300--- a/arch/x86/kernel/sys_x86_64.c
27301+++ b/arch/x86/kernel/sys_x86_64.c
27302@@ -81,8 +81,8 @@ out:
27303 return error;
27304 }
27305
27306-static void find_start_end(unsigned long flags, unsigned long *begin,
27307- unsigned long *end)
27308+static void find_start_end(struct mm_struct *mm, unsigned long flags,
27309+ unsigned long *begin, unsigned long *end)
27310 {
27311 if (!test_thread_flag(TIF_ADDR32) && (flags & MAP_32BIT)) {
27312 unsigned long new_begin;
27313@@ -101,7 +101,7 @@ static void find_start_end(unsigned long flags, unsigned long *begin,
27314 *begin = new_begin;
27315 }
27316 } else {
27317- *begin = current->mm->mmap_legacy_base;
27318+ *begin = mm->mmap_legacy_base;
27319 *end = TASK_SIZE;
27320 }
27321 }
27322@@ -114,20 +114,24 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
27323 struct vm_area_struct *vma;
27324 struct vm_unmapped_area_info info;
27325 unsigned long begin, end;
27326+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
27327
27328 if (flags & MAP_FIXED)
27329 return addr;
27330
27331- find_start_end(flags, &begin, &end);
27332+ find_start_end(mm, flags, &begin, &end);
27333
27334 if (len > end)
27335 return -ENOMEM;
27336
27337+#ifdef CONFIG_PAX_RANDMMAP
27338+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
27339+#endif
27340+
27341 if (addr) {
27342 addr = PAGE_ALIGN(addr);
27343 vma = find_vma(mm, addr);
27344- if (end - len >= addr &&
27345- (!vma || addr + len <= vma->vm_start))
27346+ if (end - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
27347 return addr;
27348 }
27349
27350@@ -137,6 +141,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
27351 info.high_limit = end;
27352 info.align_mask = filp ? get_align_mask() : 0;
27353 info.align_offset = pgoff << PAGE_SHIFT;
27354+ info.threadstack_offset = offset;
27355 return vm_unmapped_area(&info);
27356 }
27357
27358@@ -149,6 +154,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
27359 struct mm_struct *mm = current->mm;
27360 unsigned long addr = addr0;
27361 struct vm_unmapped_area_info info;
27362+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
27363
27364 /* requested length too big for entire address space */
27365 if (len > TASK_SIZE)
27366@@ -161,12 +167,15 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
27367 if (!test_thread_flag(TIF_ADDR32) && (flags & MAP_32BIT))
27368 goto bottomup;
27369
27370+#ifdef CONFIG_PAX_RANDMMAP
27371+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
27372+#endif
27373+
27374 /* requesting a specific address */
27375 if (addr) {
27376 addr = PAGE_ALIGN(addr);
27377 vma = find_vma(mm, addr);
27378- if (TASK_SIZE - len >= addr &&
27379- (!vma || addr + len <= vma->vm_start))
27380+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
27381 return addr;
27382 }
27383
27384@@ -176,6 +185,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
27385 info.high_limit = mm->mmap_base;
27386 info.align_mask = filp ? get_align_mask() : 0;
27387 info.align_offset = pgoff << PAGE_SHIFT;
27388+ info.threadstack_offset = offset;
27389 addr = vm_unmapped_area(&info);
27390 if (!(addr & ~PAGE_MASK))
27391 return addr;
27392diff --git a/arch/x86/kernel/tboot.c b/arch/x86/kernel/tboot.c
27393index 91a4496..bb87552 100644
27394--- a/arch/x86/kernel/tboot.c
27395+++ b/arch/x86/kernel/tboot.c
27396@@ -221,7 +221,7 @@ static int tboot_setup_sleep(void)
27397
27398 void tboot_shutdown(u32 shutdown_type)
27399 {
27400- void (*shutdown)(void);
27401+ void (* __noreturn shutdown)(void);
27402
27403 if (!tboot_enabled())
27404 return;
27405@@ -243,7 +243,7 @@ void tboot_shutdown(u32 shutdown_type)
27406
27407 switch_to_tboot_pt();
27408
27409- shutdown = (void(*)(void))(unsigned long)tboot->shutdown_entry;
27410+ shutdown = (void *)(unsigned long)tboot->shutdown_entry;
27411 shutdown();
27412
27413 /* should not reach here */
27414@@ -310,7 +310,7 @@ static int tboot_extended_sleep(u8 sleep_state, u32 val_a, u32 val_b)
27415 return -ENODEV;
27416 }
27417
27418-static atomic_t ap_wfs_count;
27419+static atomic_unchecked_t ap_wfs_count;
27420
27421 static int tboot_wait_for_aps(int num_aps)
27422 {
27423@@ -334,9 +334,9 @@ static int tboot_cpu_callback(struct notifier_block *nfb, unsigned long action,
27424 {
27425 switch (action) {
27426 case CPU_DYING:
27427- atomic_inc(&ap_wfs_count);
27428+ atomic_inc_unchecked(&ap_wfs_count);
27429 if (num_online_cpus() == 1)
27430- if (tboot_wait_for_aps(atomic_read(&ap_wfs_count)))
27431+ if (tboot_wait_for_aps(atomic_read_unchecked(&ap_wfs_count)))
27432 return NOTIFY_BAD;
27433 break;
27434 }
27435@@ -422,7 +422,7 @@ static __init int tboot_late_init(void)
27436
27437 tboot_create_trampoline();
27438
27439- atomic_set(&ap_wfs_count, 0);
27440+ atomic_set_unchecked(&ap_wfs_count, 0);
27441 register_hotcpu_notifier(&tboot_cpu_notifier);
27442
27443 #ifdef CONFIG_DEBUG_FS
27444diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c
27445index bf7ef5c..59d0ac9 100644
27446--- a/arch/x86/kernel/time.c
27447+++ b/arch/x86/kernel/time.c
27448@@ -30,9 +30,9 @@ unsigned long profile_pc(struct pt_regs *regs)
27449 {
27450 unsigned long pc = instruction_pointer(regs);
27451
27452- if (!user_mode_vm(regs) && in_lock_functions(pc)) {
27453+ if (!user_mode(regs) && in_lock_functions(pc)) {
27454 #ifdef CONFIG_FRAME_POINTER
27455- return *(unsigned long *)(regs->bp + sizeof(long));
27456+ return ktla_ktva(*(unsigned long *)(regs->bp + sizeof(long)));
27457 #else
27458 unsigned long *sp =
27459 (unsigned long *)kernel_stack_pointer(regs);
27460@@ -41,11 +41,17 @@ unsigned long profile_pc(struct pt_regs *regs)
27461 * or above a saved flags. Eflags has bits 22-31 zero,
27462 * kernel addresses don't.
27463 */
27464+
27465+#ifdef CONFIG_PAX_KERNEXEC
27466+ return ktla_ktva(sp[0]);
27467+#else
27468 if (sp[0] >> 22)
27469 return sp[0];
27470 if (sp[1] >> 22)
27471 return sp[1];
27472 #endif
27473+
27474+#endif
27475 }
27476 return pc;
27477 }
27478diff --git a/arch/x86/kernel/tls.c b/arch/x86/kernel/tls.c
27479index f7fec09..9991981 100644
27480--- a/arch/x86/kernel/tls.c
27481+++ b/arch/x86/kernel/tls.c
27482@@ -84,6 +84,11 @@ int do_set_thread_area(struct task_struct *p, int idx,
27483 if (idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX)
27484 return -EINVAL;
27485
27486+#ifdef CONFIG_PAX_SEGMEXEC
27487+ if ((p->mm->pax_flags & MF_PAX_SEGMEXEC) && (info.contents & MODIFY_LDT_CONTENTS_CODE))
27488+ return -EINVAL;
27489+#endif
27490+
27491 set_tls_desc(p, idx, &info, 1);
27492
27493 return 0;
27494@@ -200,7 +205,7 @@ int regset_tls_set(struct task_struct *target, const struct user_regset *regset,
27495
27496 if (kbuf)
27497 info = kbuf;
27498- else if (__copy_from_user(infobuf, ubuf, count))
27499+ else if (count > sizeof infobuf || __copy_from_user(infobuf, ubuf, count))
27500 return -EFAULT;
27501 else
27502 info = infobuf;
27503diff --git a/arch/x86/kernel/tracepoint.c b/arch/x86/kernel/tracepoint.c
27504index 1c113db..287b42e 100644
27505--- a/arch/x86/kernel/tracepoint.c
27506+++ b/arch/x86/kernel/tracepoint.c
27507@@ -9,11 +9,11 @@
27508 #include <linux/atomic.h>
27509
27510 atomic_t trace_idt_ctr = ATOMIC_INIT(0);
27511-struct desc_ptr trace_idt_descr = { NR_VECTORS * 16 - 1,
27512+const struct desc_ptr trace_idt_descr = { NR_VECTORS * 16 - 1,
27513 (unsigned long) trace_idt_table };
27514
27515 /* No need to be aligned, but done to keep all IDTs defined the same way. */
27516-gate_desc trace_idt_table[NR_VECTORS] __page_aligned_bss;
27517+gate_desc trace_idt_table[NR_VECTORS] __page_aligned_rodata;
27518
27519 static int trace_irq_vector_refcount;
27520 static DEFINE_MUTEX(irq_vector_mutex);
27521diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
27522index f73b5d4..0adcc9a 100644
27523--- a/arch/x86/kernel/traps.c
27524+++ b/arch/x86/kernel/traps.c
27525@@ -66,7 +66,7 @@
27526 #include <asm/proto.h>
27527
27528 /* No need to be aligned, but done to keep all IDTs defined the same way. */
27529-gate_desc debug_idt_table[NR_VECTORS] __page_aligned_bss;
27530+gate_desc debug_idt_table[NR_VECTORS] __page_aligned_rodata;
27531 #else
27532 #include <asm/processor-flags.h>
27533 #include <asm/setup.h>
27534@@ -75,7 +75,7 @@ asmlinkage int system_call(void);
27535 #endif
27536
27537 /* Must be page-aligned because the real IDT is used in a fixmap. */
27538-gate_desc idt_table[NR_VECTORS] __page_aligned_bss;
27539+gate_desc idt_table[NR_VECTORS] __page_aligned_rodata;
27540
27541 DECLARE_BITMAP(used_vectors, NR_VECTORS);
27542 EXPORT_SYMBOL_GPL(used_vectors);
27543@@ -107,11 +107,11 @@ static inline void preempt_conditional_cli(struct pt_regs *regs)
27544 }
27545
27546 static int __kprobes
27547-do_trap_no_signal(struct task_struct *tsk, int trapnr, char *str,
27548+do_trap_no_signal(struct task_struct *tsk, int trapnr, const char *str,
27549 struct pt_regs *regs, long error_code)
27550 {
27551 #ifdef CONFIG_X86_32
27552- if (regs->flags & X86_VM_MASK) {
27553+ if (v8086_mode(regs)) {
27554 /*
27555 * Traps 0, 1, 3, 4, and 5 should be forwarded to vm86.
27556 * On nmi (interrupt 2), do_trap should not be called.
27557@@ -124,12 +124,24 @@ do_trap_no_signal(struct task_struct *tsk, int trapnr, char *str,
27558 return -1;
27559 }
27560 #endif
27561- if (!user_mode(regs)) {
27562+ if (!user_mode_novm(regs)) {
27563 if (!fixup_exception(regs)) {
27564 tsk->thread.error_code = error_code;
27565 tsk->thread.trap_nr = trapnr;
27566+
27567+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
27568+ if (trapnr == X86_TRAP_SS && ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS))
27569+ str = "PAX: suspicious stack segment fault";
27570+#endif
27571+
27572 die(str, regs, error_code);
27573 }
27574+
27575+#ifdef CONFIG_PAX_REFCOUNT
27576+ if (trapnr == X86_TRAP_OF)
27577+ pax_report_refcount_overflow(regs);
27578+#endif
27579+
27580 return 0;
27581 }
27582
27583@@ -137,7 +149,7 @@ do_trap_no_signal(struct task_struct *tsk, int trapnr, char *str,
27584 }
27585
27586 static void __kprobes
27587-do_trap(int trapnr, int signr, char *str, struct pt_regs *regs,
27588+do_trap(int trapnr, int signr, const char *str, struct pt_regs *regs,
27589 long error_code, siginfo_t *info)
27590 {
27591 struct task_struct *tsk = current;
27592@@ -161,7 +173,7 @@ do_trap(int trapnr, int signr, char *str, struct pt_regs *regs,
27593 if (show_unhandled_signals && unhandled_signal(tsk, signr) &&
27594 printk_ratelimit()) {
27595 pr_info("%s[%d] trap %s ip:%lx sp:%lx error:%lx",
27596- tsk->comm, tsk->pid, str,
27597+ tsk->comm, task_pid_nr(tsk), str,
27598 regs->ip, regs->sp, error_code);
27599 print_vma_addr(" in ", regs->ip);
27600 pr_cont("\n");
27601@@ -251,6 +263,11 @@ dotraplinkage void do_double_fault(struct pt_regs *regs, long error_code)
27602 tsk->thread.error_code = error_code;
27603 tsk->thread.trap_nr = X86_TRAP_DF;
27604
27605+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
27606+ if ((unsigned long)tsk->stack - regs->sp <= PAGE_SIZE)
27607+ die("grsec: kernel stack overflow detected", regs, error_code);
27608+#endif
27609+
27610 #ifdef CONFIG_DOUBLEFAULT
27611 df_debug(regs, error_code);
27612 #endif
27613@@ -273,7 +290,7 @@ do_general_protection(struct pt_regs *regs, long error_code)
27614 conditional_sti(regs);
27615
27616 #ifdef CONFIG_X86_32
27617- if (regs->flags & X86_VM_MASK) {
27618+ if (v8086_mode(regs)) {
27619 local_irq_enable();
27620 handle_vm86_fault((struct kernel_vm86_regs *) regs, error_code);
27621 goto exit;
27622@@ -281,18 +298,42 @@ do_general_protection(struct pt_regs *regs, long error_code)
27623 #endif
27624
27625 tsk = current;
27626- if (!user_mode(regs)) {
27627+ if (!user_mode_novm(regs)) {
27628 if (fixup_exception(regs))
27629 goto exit;
27630
27631 tsk->thread.error_code = error_code;
27632 tsk->thread.trap_nr = X86_TRAP_GP;
27633 if (notify_die(DIE_GPF, "general protection fault", regs, error_code,
27634- X86_TRAP_GP, SIGSEGV) != NOTIFY_STOP)
27635+ X86_TRAP_GP, SIGSEGV) != NOTIFY_STOP) {
27636+
27637+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
27638+ if ((regs->cs & 0xFFFF) == __KERNEL_CS || (regs->cs & 0xFFFF) == __KERNEXEC_KERNEL_CS)
27639+ die("PAX: suspicious general protection fault", regs, error_code);
27640+ else
27641+#endif
27642+
27643 die("general protection fault", regs, error_code);
27644+ }
27645 goto exit;
27646 }
27647
27648+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC)
27649+ if (!(__supported_pte_mask & _PAGE_NX) && tsk->mm && (tsk->mm->pax_flags & MF_PAX_PAGEEXEC)) {
27650+ struct mm_struct *mm = tsk->mm;
27651+ unsigned long limit;
27652+
27653+ down_write(&mm->mmap_sem);
27654+ limit = mm->context.user_cs_limit;
27655+ if (limit < TASK_SIZE) {
27656+ track_exec_limit(mm, limit, TASK_SIZE, VM_EXEC);
27657+ up_write(&mm->mmap_sem);
27658+ return;
27659+ }
27660+ up_write(&mm->mmap_sem);
27661+ }
27662+#endif
27663+
27664 tsk->thread.error_code = error_code;
27665 tsk->thread.trap_nr = X86_TRAP_GP;
27666
27667@@ -453,7 +494,7 @@ dotraplinkage void __kprobes do_debug(struct pt_regs *regs, long error_code)
27668 /* It's safe to allow irq's after DR6 has been saved */
27669 preempt_conditional_sti(regs);
27670
27671- if (regs->flags & X86_VM_MASK) {
27672+ if (v8086_mode(regs)) {
27673 handle_vm86_trap((struct kernel_vm86_regs *) regs, error_code,
27674 X86_TRAP_DB);
27675 preempt_conditional_cli(regs);
27676@@ -468,7 +509,7 @@ dotraplinkage void __kprobes do_debug(struct pt_regs *regs, long error_code)
27677 * We already checked v86 mode above, so we can check for kernel mode
27678 * by just checking the CPL of CS.
27679 */
27680- if ((dr6 & DR_STEP) && !user_mode(regs)) {
27681+ if ((dr6 & DR_STEP) && !user_mode_novm(regs)) {
27682 tsk->thread.debugreg6 &= ~DR_STEP;
27683 set_tsk_thread_flag(tsk, TIF_SINGLESTEP);
27684 regs->flags &= ~X86_EFLAGS_TF;
27685@@ -500,7 +541,7 @@ void math_error(struct pt_regs *regs, int error_code, int trapnr)
27686 return;
27687 conditional_sti(regs);
27688
27689- if (!user_mode_vm(regs))
27690+ if (!user_mode(regs))
27691 {
27692 if (!fixup_exception(regs)) {
27693 task->thread.error_code = error_code;
27694diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
27695index 57e5ce1..20b0040 100644
27696--- a/arch/x86/kernel/tsc.c
27697+++ b/arch/x86/kernel/tsc.c
27698@@ -150,7 +150,7 @@ static void cyc2ns_write_end(int cpu, struct cyc2ns_data *data)
27699 */
27700 smp_wmb();
27701
27702- ACCESS_ONCE(c2n->head) = data;
27703+ ACCESS_ONCE_RW(c2n->head) = data;
27704 }
27705
27706 /*
27707diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c
27708index 2ed8459..7cf329f 100644
27709--- a/arch/x86/kernel/uprobes.c
27710+++ b/arch/x86/kernel/uprobes.c
27711@@ -629,7 +629,7 @@ int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val,
27712 int ret = NOTIFY_DONE;
27713
27714 /* We are only interested in userspace traps */
27715- if (regs && !user_mode_vm(regs))
27716+ if (regs && !user_mode(regs))
27717 return NOTIFY_DONE;
27718
27719 switch (val) {
27720@@ -719,7 +719,7 @@ arch_uretprobe_hijack_return_addr(unsigned long trampoline_vaddr, struct pt_regs
27721
27722 if (ncopied != rasize) {
27723 pr_err("uprobe: return address clobbered: pid=%d, %%sp=%#lx, "
27724- "%%ip=%#lx\n", current->pid, regs->sp, regs->ip);
27725+ "%%ip=%#lx\n", task_pid_nr(current), regs->sp, regs->ip);
27726
27727 force_sig_info(SIGSEGV, SEND_SIG_FORCED, current);
27728 }
27729diff --git a/arch/x86/kernel/verify_cpu.S b/arch/x86/kernel/verify_cpu.S
27730index b9242ba..50c5edd 100644
27731--- a/arch/x86/kernel/verify_cpu.S
27732+++ b/arch/x86/kernel/verify_cpu.S
27733@@ -20,6 +20,7 @@
27734 * arch/x86/boot/compressed/head_64.S: Boot cpu verification
27735 * arch/x86/kernel/trampoline_64.S: secondary processor verification
27736 * arch/x86/kernel/head_32.S: processor startup
27737+ * arch/x86/kernel/acpi/realmode/wakeup.S: 32bit processor resume
27738 *
27739 * verify_cpu, returns the status of longmode and SSE in register %eax.
27740 * 0: Success 1: Failure
27741diff --git a/arch/x86/kernel/vm86_32.c b/arch/x86/kernel/vm86_32.c
27742index e8edcf5..27f9344 100644
27743--- a/arch/x86/kernel/vm86_32.c
27744+++ b/arch/x86/kernel/vm86_32.c
27745@@ -44,6 +44,7 @@
27746 #include <linux/ptrace.h>
27747 #include <linux/audit.h>
27748 #include <linux/stddef.h>
27749+#include <linux/grsecurity.h>
27750
27751 #include <asm/uaccess.h>
27752 #include <asm/io.h>
27753@@ -150,7 +151,7 @@ struct pt_regs *save_v86_state(struct kernel_vm86_regs *regs)
27754 do_exit(SIGSEGV);
27755 }
27756
27757- tss = &per_cpu(init_tss, get_cpu());
27758+ tss = init_tss + get_cpu();
27759 current->thread.sp0 = current->thread.saved_sp0;
27760 current->thread.sysenter_cs = __KERNEL_CS;
27761 load_sp0(tss, &current->thread);
27762@@ -214,6 +215,14 @@ SYSCALL_DEFINE1(vm86old, struct vm86_struct __user *, v86)
27763
27764 if (tsk->thread.saved_sp0)
27765 return -EPERM;
27766+
27767+#ifdef CONFIG_GRKERNSEC_VM86
27768+ if (!capable(CAP_SYS_RAWIO)) {
27769+ gr_handle_vm86();
27770+ return -EPERM;
27771+ }
27772+#endif
27773+
27774 tmp = copy_vm86_regs_from_user(&info.regs, &v86->regs,
27775 offsetof(struct kernel_vm86_struct, vm86plus) -
27776 sizeof(info.regs));
27777@@ -238,6 +247,13 @@ SYSCALL_DEFINE2(vm86, unsigned long, cmd, unsigned long, arg)
27778 int tmp;
27779 struct vm86plus_struct __user *v86;
27780
27781+#ifdef CONFIG_GRKERNSEC_VM86
27782+ if (!capable(CAP_SYS_RAWIO)) {
27783+ gr_handle_vm86();
27784+ return -EPERM;
27785+ }
27786+#endif
27787+
27788 tsk = current;
27789 switch (cmd) {
27790 case VM86_REQUEST_IRQ:
27791@@ -318,7 +334,7 @@ static void do_sys_vm86(struct kernel_vm86_struct *info, struct task_struct *tsk
27792 tsk->thread.saved_fs = info->regs32->fs;
27793 tsk->thread.saved_gs = get_user_gs(info->regs32);
27794
27795- tss = &per_cpu(init_tss, get_cpu());
27796+ tss = init_tss + get_cpu();
27797 tsk->thread.sp0 = (unsigned long) &info->VM86_TSS_ESP0;
27798 if (cpu_has_sep)
27799 tsk->thread.sysenter_cs = 0;
27800@@ -525,7 +541,7 @@ static void do_int(struct kernel_vm86_regs *regs, int i,
27801 goto cannot_handle;
27802 if (i == 0x21 && is_revectored(AH(regs), &KVM86->int21_revectored))
27803 goto cannot_handle;
27804- intr_ptr = (unsigned long __user *) (i << 2);
27805+ intr_ptr = (__force unsigned long __user *) (i << 2);
27806 if (get_user(segoffs, intr_ptr))
27807 goto cannot_handle;
27808 if ((segoffs >> 16) == BIOSSEG)
27809diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
27810index 49edf2d..c0d1362 100644
27811--- a/arch/x86/kernel/vmlinux.lds.S
27812+++ b/arch/x86/kernel/vmlinux.lds.S
27813@@ -26,6 +26,13 @@
27814 #include <asm/page_types.h>
27815 #include <asm/cache.h>
27816 #include <asm/boot.h>
27817+#include <asm/segment.h>
27818+
27819+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
27820+#define __KERNEL_TEXT_OFFSET (LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR)
27821+#else
27822+#define __KERNEL_TEXT_OFFSET 0
27823+#endif
27824
27825 #undef i386 /* in case the preprocessor is a 32bit one */
27826
27827@@ -69,30 +76,43 @@ jiffies_64 = jiffies;
27828
27829 PHDRS {
27830 text PT_LOAD FLAGS(5); /* R_E */
27831+#ifdef CONFIG_X86_32
27832+ module PT_LOAD FLAGS(5); /* R_E */
27833+#endif
27834+#ifdef CONFIG_XEN
27835+ rodata PT_LOAD FLAGS(5); /* R_E */
27836+#else
27837+ rodata PT_LOAD FLAGS(4); /* R__ */
27838+#endif
27839 data PT_LOAD FLAGS(6); /* RW_ */
27840-#ifdef CONFIG_X86_64
27841+ init.begin PT_LOAD FLAGS(6); /* RW_ */
27842 #ifdef CONFIG_SMP
27843 percpu PT_LOAD FLAGS(6); /* RW_ */
27844 #endif
27845+ text.init PT_LOAD FLAGS(5); /* R_E */
27846+ text.exit PT_LOAD FLAGS(5); /* R_E */
27847 init PT_LOAD FLAGS(7); /* RWE */
27848-#endif
27849 note PT_NOTE FLAGS(0); /* ___ */
27850 }
27851
27852 SECTIONS
27853 {
27854 #ifdef CONFIG_X86_32
27855- . = LOAD_OFFSET + LOAD_PHYSICAL_ADDR;
27856- phys_startup_32 = startup_32 - LOAD_OFFSET;
27857+ . = LOAD_OFFSET + ____LOAD_PHYSICAL_ADDR;
27858 #else
27859- . = __START_KERNEL;
27860- phys_startup_64 = startup_64 - LOAD_OFFSET;
27861+ . = __START_KERNEL;
27862 #endif
27863
27864 /* Text and read-only data */
27865- .text : AT(ADDR(.text) - LOAD_OFFSET) {
27866- _text = .;
27867+ .text (. - __KERNEL_TEXT_OFFSET): AT(ADDR(.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) {
27868 /* bootstrapping code */
27869+#ifdef CONFIG_X86_32
27870+ phys_startup_32 = startup_32 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET;
27871+#else
27872+ phys_startup_64 = startup_64 - LOAD_OFFSET + __KERNEL_TEXT_OFFSET;
27873+#endif
27874+ __LOAD_PHYSICAL_ADDR = . - LOAD_OFFSET + __KERNEL_TEXT_OFFSET;
27875+ _text = .;
27876 HEAD_TEXT
27877 . = ALIGN(8);
27878 _stext = .;
27879@@ -104,13 +124,47 @@ SECTIONS
27880 IRQENTRY_TEXT
27881 *(.fixup)
27882 *(.gnu.warning)
27883- /* End of text section */
27884- _etext = .;
27885 } :text = 0x9090
27886
27887- NOTES :text :note
27888+ . += __KERNEL_TEXT_OFFSET;
27889
27890- EXCEPTION_TABLE(16) :text = 0x9090
27891+#ifdef CONFIG_X86_32
27892+ . = ALIGN(PAGE_SIZE);
27893+ .module.text : AT(ADDR(.module.text) - LOAD_OFFSET) {
27894+
27895+#ifdef CONFIG_PAX_KERNEXEC
27896+ MODULES_EXEC_VADDR = .;
27897+ BYTE(0)
27898+ . += (CONFIG_PAX_KERNEXEC_MODULE_TEXT * 1024 * 1024);
27899+ . = ALIGN(HPAGE_SIZE) - 1;
27900+ MODULES_EXEC_END = .;
27901+#endif
27902+
27903+ } :module
27904+#endif
27905+
27906+ .text.end : AT(ADDR(.text.end) - LOAD_OFFSET) {
27907+ /* End of text section */
27908+ BYTE(0)
27909+ _etext = . - __KERNEL_TEXT_OFFSET;
27910+ }
27911+
27912+#ifdef CONFIG_X86_32
27913+ . = ALIGN(PAGE_SIZE);
27914+ .rodata.page_aligned : AT(ADDR(.rodata.page_aligned) - LOAD_OFFSET) {
27915+ . = ALIGN(PAGE_SIZE);
27916+ *(.empty_zero_page)
27917+ *(.initial_pg_fixmap)
27918+ *(.initial_pg_pmd)
27919+ *(.initial_page_table)
27920+ *(.swapper_pg_dir)
27921+ } :rodata
27922+#endif
27923+
27924+ . = ALIGN(PAGE_SIZE);
27925+ NOTES :rodata :note
27926+
27927+ EXCEPTION_TABLE(16) :rodata
27928
27929 #if defined(CONFIG_DEBUG_RODATA)
27930 /* .text should occupy whole number of pages */
27931@@ -122,16 +176,20 @@ SECTIONS
27932
27933 /* Data */
27934 .data : AT(ADDR(.data) - LOAD_OFFSET) {
27935+
27936+#ifdef CONFIG_PAX_KERNEXEC
27937+ . = ALIGN(HPAGE_SIZE);
27938+#else
27939+ . = ALIGN(PAGE_SIZE);
27940+#endif
27941+
27942 /* Start of data section */
27943 _sdata = .;
27944
27945 /* init_task */
27946 INIT_TASK_DATA(THREAD_SIZE)
27947
27948-#ifdef CONFIG_X86_32
27949- /* 32 bit has nosave before _edata */
27950 NOSAVE_DATA
27951-#endif
27952
27953 PAGE_ALIGNED_DATA(PAGE_SIZE)
27954
27955@@ -174,12 +232,19 @@ SECTIONS
27956 . = ALIGN(__vvar_page + PAGE_SIZE, PAGE_SIZE);
27957
27958 /* Init code and data - will be freed after init */
27959- . = ALIGN(PAGE_SIZE);
27960 .init.begin : AT(ADDR(.init.begin) - LOAD_OFFSET) {
27961+ BYTE(0)
27962+
27963+#ifdef CONFIG_PAX_KERNEXEC
27964+ . = ALIGN(HPAGE_SIZE);
27965+#else
27966+ . = ALIGN(PAGE_SIZE);
27967+#endif
27968+
27969 __init_begin = .; /* paired with __init_end */
27970- }
27971+ } :init.begin
27972
27973-#if defined(CONFIG_X86_64) && defined(CONFIG_SMP)
27974+#ifdef CONFIG_SMP
27975 /*
27976 * percpu offsets are zero-based on SMP. PERCPU_VADDR() changes the
27977 * output PHDR, so the next output section - .init.text - should
27978@@ -188,12 +253,27 @@ SECTIONS
27979 PERCPU_VADDR(INTERNODE_CACHE_BYTES, 0, :percpu)
27980 #endif
27981
27982- INIT_TEXT_SECTION(PAGE_SIZE)
27983-#ifdef CONFIG_X86_64
27984- :init
27985-#endif
27986+ . = ALIGN(PAGE_SIZE);
27987+ init_begin = .;
27988+ .init.text (. - __KERNEL_TEXT_OFFSET): AT(init_begin - LOAD_OFFSET) {
27989+ VMLINUX_SYMBOL(_sinittext) = .;
27990+ INIT_TEXT
27991+ VMLINUX_SYMBOL(_einittext) = .;
27992+ . = ALIGN(PAGE_SIZE);
27993+ } :text.init
27994
27995- INIT_DATA_SECTION(16)
27996+ /*
27997+ * .exit.text is discard at runtime, not link time, to deal with
27998+ * references from .altinstructions and .eh_frame
27999+ */
28000+ .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET + __KERNEL_TEXT_OFFSET) {
28001+ EXIT_TEXT
28002+ . = ALIGN(16);
28003+ } :text.exit
28004+ . = init_begin + SIZEOF(.init.text) + SIZEOF(.exit.text);
28005+
28006+ . = ALIGN(PAGE_SIZE);
28007+ INIT_DATA_SECTION(16) :init
28008
28009 .x86_cpu_dev.init : AT(ADDR(.x86_cpu_dev.init) - LOAD_OFFSET) {
28010 __x86_cpu_dev_start = .;
28011@@ -264,19 +344,12 @@ SECTIONS
28012 }
28013
28014 . = ALIGN(8);
28015- /*
28016- * .exit.text is discard at runtime, not link time, to deal with
28017- * references from .altinstructions and .eh_frame
28018- */
28019- .exit.text : AT(ADDR(.exit.text) - LOAD_OFFSET) {
28020- EXIT_TEXT
28021- }
28022
28023 .exit.data : AT(ADDR(.exit.data) - LOAD_OFFSET) {
28024 EXIT_DATA
28025 }
28026
28027-#if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP)
28028+#ifndef CONFIG_SMP
28029 PERCPU_SECTION(INTERNODE_CACHE_BYTES)
28030 #endif
28031
28032@@ -295,16 +368,10 @@ SECTIONS
28033 .smp_locks : AT(ADDR(.smp_locks) - LOAD_OFFSET) {
28034 __smp_locks = .;
28035 *(.smp_locks)
28036- . = ALIGN(PAGE_SIZE);
28037 __smp_locks_end = .;
28038+ . = ALIGN(PAGE_SIZE);
28039 }
28040
28041-#ifdef CONFIG_X86_64
28042- .data_nosave : AT(ADDR(.data_nosave) - LOAD_OFFSET) {
28043- NOSAVE_DATA
28044- }
28045-#endif
28046-
28047 /* BSS */
28048 . = ALIGN(PAGE_SIZE);
28049 .bss : AT(ADDR(.bss) - LOAD_OFFSET) {
28050@@ -320,6 +387,7 @@ SECTIONS
28051 __brk_base = .;
28052 . += 64 * 1024; /* 64k alignment slop space */
28053 *(.brk_reservation) /* areas brk users have reserved */
28054+ . = ALIGN(HPAGE_SIZE);
28055 __brk_limit = .;
28056 }
28057
28058@@ -346,13 +414,12 @@ SECTIONS
28059 * for the boot processor.
28060 */
28061 #define INIT_PER_CPU(x) init_per_cpu__##x = x + __per_cpu_load
28062-INIT_PER_CPU(gdt_page);
28063 INIT_PER_CPU(irq_stack_union);
28064
28065 /*
28066 * Build-time check on the image size:
28067 */
28068-. = ASSERT((_end - _text <= KERNEL_IMAGE_SIZE),
28069+. = ASSERT((_end - _text - __KERNEL_TEXT_OFFSET <= KERNEL_IMAGE_SIZE),
28070 "kernel image bigger than KERNEL_IMAGE_SIZE");
28071
28072 #ifdef CONFIG_SMP
28073diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c
28074index 8b3b3eb..9395aa9 100644
28075--- a/arch/x86/kernel/vsyscall_64.c
28076+++ b/arch/x86/kernel/vsyscall_64.c
28077@@ -54,15 +54,13 @@
28078
28079 DEFINE_VVAR(int, vgetcpu_mode);
28080
28081-static enum { EMULATE, NATIVE, NONE } vsyscall_mode = EMULATE;
28082+static enum { EMULATE, NONE } vsyscall_mode = EMULATE;
28083
28084 static int __init vsyscall_setup(char *str)
28085 {
28086 if (str) {
28087 if (!strcmp("emulate", str))
28088 vsyscall_mode = EMULATE;
28089- else if (!strcmp("native", str))
28090- vsyscall_mode = NATIVE;
28091 else if (!strcmp("none", str))
28092 vsyscall_mode = NONE;
28093 else
28094@@ -279,8 +277,7 @@ do_ret:
28095 return true;
28096
28097 sigsegv:
28098- force_sig(SIGSEGV, current);
28099- return true;
28100+ do_group_exit(SIGKILL);
28101 }
28102
28103 /*
28104@@ -332,10 +329,7 @@ void __init map_vsyscall(void)
28105 unsigned long physaddr_vsyscall = __pa_symbol(&__vsyscall_page);
28106 unsigned long physaddr_vvar_page = __pa_symbol(&__vvar_page);
28107
28108- __set_fixmap(VSYSCALL_FIRST_PAGE, physaddr_vsyscall,
28109- vsyscall_mode == NATIVE
28110- ? PAGE_KERNEL_VSYSCALL
28111- : PAGE_KERNEL_VVAR);
28112+ __set_fixmap(VSYSCALL_FIRST_PAGE, physaddr_vsyscall, PAGE_KERNEL_VVAR);
28113 BUILD_BUG_ON((unsigned long)__fix_to_virt(VSYSCALL_FIRST_PAGE) !=
28114 (unsigned long)VSYSCALL_START);
28115
28116diff --git a/arch/x86/kernel/x8664_ksyms_64.c b/arch/x86/kernel/x8664_ksyms_64.c
28117index 04068192..4d75aa6 100644
28118--- a/arch/x86/kernel/x8664_ksyms_64.c
28119+++ b/arch/x86/kernel/x8664_ksyms_64.c
28120@@ -34,8 +34,6 @@ EXPORT_SYMBOL(copy_user_generic_string);
28121 EXPORT_SYMBOL(copy_user_generic_unrolled);
28122 EXPORT_SYMBOL(copy_user_enhanced_fast_string);
28123 EXPORT_SYMBOL(__copy_user_nocache);
28124-EXPORT_SYMBOL(_copy_from_user);
28125-EXPORT_SYMBOL(_copy_to_user);
28126
28127 EXPORT_SYMBOL(copy_page);
28128 EXPORT_SYMBOL(clear_page);
28129@@ -73,3 +71,7 @@ EXPORT_SYMBOL(___preempt_schedule);
28130 EXPORT_SYMBOL(___preempt_schedule_context);
28131 #endif
28132 #endif
28133+
28134+#ifdef CONFIG_PAX_PER_CPU_PGD
28135+EXPORT_SYMBOL(cpu_pgd);
28136+#endif
28137diff --git a/arch/x86/kernel/x86_init.c b/arch/x86/kernel/x86_init.c
28138index e48b674..a451dd9 100644
28139--- a/arch/x86/kernel/x86_init.c
28140+++ b/arch/x86/kernel/x86_init.c
28141@@ -93,7 +93,7 @@ struct x86_cpuinit_ops x86_cpuinit = {
28142 static void default_nmi_init(void) { };
28143 static int default_i8042_detect(void) { return 1; };
28144
28145-struct x86_platform_ops x86_platform = {
28146+struct x86_platform_ops x86_platform __read_only = {
28147 .calibrate_tsc = native_calibrate_tsc,
28148 .get_wallclock = mach_get_cmos_time,
28149 .set_wallclock = mach_set_rtc_mmss,
28150@@ -109,7 +109,7 @@ struct x86_platform_ops x86_platform = {
28151 EXPORT_SYMBOL_GPL(x86_platform);
28152
28153 #if defined(CONFIG_PCI_MSI)
28154-struct x86_msi_ops x86_msi = {
28155+struct x86_msi_ops x86_msi __read_only = {
28156 .setup_msi_irqs = native_setup_msi_irqs,
28157 .compose_msi_msg = native_compose_msi_msg,
28158 .teardown_msi_irq = native_teardown_msi_irq,
28159@@ -150,7 +150,7 @@ u32 arch_msix_mask_irq(struct msi_desc *desc, u32 flag)
28160 }
28161 #endif
28162
28163-struct x86_io_apic_ops x86_io_apic_ops = {
28164+struct x86_io_apic_ops x86_io_apic_ops __read_only = {
28165 .init = native_io_apic_init_mappings,
28166 .read = native_io_apic_read,
28167 .write = native_io_apic_write,
28168diff --git a/arch/x86/kernel/xsave.c b/arch/x86/kernel/xsave.c
28169index a4b451c..8dfe1ad 100644
28170--- a/arch/x86/kernel/xsave.c
28171+++ b/arch/x86/kernel/xsave.c
28172@@ -164,18 +164,18 @@ static inline int save_xstate_epilog(void __user *buf, int ia32_frame)
28173
28174 /* Setup the bytes not touched by the [f]xsave and reserved for SW. */
28175 sw_bytes = ia32_frame ? &fx_sw_reserved_ia32 : &fx_sw_reserved;
28176- err = __copy_to_user(&x->i387.sw_reserved, sw_bytes, sizeof(*sw_bytes));
28177+ err = __copy_to_user(x->i387.sw_reserved, sw_bytes, sizeof(*sw_bytes));
28178
28179 if (!use_xsave())
28180 return err;
28181
28182- err |= __put_user(FP_XSTATE_MAGIC2, (__u32 *)(buf + xstate_size));
28183+ err |= __put_user(FP_XSTATE_MAGIC2, (__u32 __user *)(buf + xstate_size));
28184
28185 /*
28186 * Read the xstate_bv which we copied (directly from the cpu or
28187 * from the state in task struct) to the user buffers.
28188 */
28189- err |= __get_user(xstate_bv, (__u32 *)&x->xsave_hdr.xstate_bv);
28190+ err |= __get_user(xstate_bv, (__u32 __user *)&x->xsave_hdr.xstate_bv);
28191
28192 /*
28193 * For legacy compatible, we always set FP/SSE bits in the bit
28194@@ -190,7 +190,7 @@ static inline int save_xstate_epilog(void __user *buf, int ia32_frame)
28195 */
28196 xstate_bv |= XSTATE_FPSSE;
28197
28198- err |= __put_user(xstate_bv, (__u32 *)&x->xsave_hdr.xstate_bv);
28199+ err |= __put_user(xstate_bv, (__u32 __user *)&x->xsave_hdr.xstate_bv);
28200
28201 return err;
28202 }
28203@@ -199,6 +199,7 @@ static inline int save_user_xstate(struct xsave_struct __user *buf)
28204 {
28205 int err;
28206
28207+ buf = (struct xsave_struct __user *)____m(buf);
28208 if (use_xsave())
28209 err = xsave_user(buf);
28210 else if (use_fxsr())
28211@@ -311,6 +312,7 @@ sanitize_restored_xstate(struct task_struct *tsk,
28212 */
28213 static inline int restore_user_xstate(void __user *buf, u64 xbv, int fx_only)
28214 {
28215+ buf = (void __user *)____m(buf);
28216 if (use_xsave()) {
28217 if ((unsigned long)buf % 64 || fx_only) {
28218 u64 init_bv = pcntxt_mask & ~XSTATE_FPSSE;
28219diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
28220index f47a104..5ce59a8 100644
28221--- a/arch/x86/kvm/cpuid.c
28222+++ b/arch/x86/kvm/cpuid.c
28223@@ -166,15 +166,20 @@ int kvm_vcpu_ioctl_set_cpuid2(struct kvm_vcpu *vcpu,
28224 struct kvm_cpuid2 *cpuid,
28225 struct kvm_cpuid_entry2 __user *entries)
28226 {
28227- int r;
28228+ int r, i;
28229
28230 r = -E2BIG;
28231 if (cpuid->nent > KVM_MAX_CPUID_ENTRIES)
28232 goto out;
28233 r = -EFAULT;
28234- if (copy_from_user(&vcpu->arch.cpuid_entries, entries,
28235- cpuid->nent * sizeof(struct kvm_cpuid_entry2)))
28236+ if (!access_ok(VERIFY_READ, entries, cpuid->nent * sizeof(struct kvm_cpuid_entry2)))
28237 goto out;
28238+ for (i = 0; i < cpuid->nent; ++i) {
28239+ struct kvm_cpuid_entry2 cpuid_entry;
28240+ if (__copy_from_user(&cpuid_entry, entries + i, sizeof(cpuid_entry)))
28241+ goto out;
28242+ vcpu->arch.cpuid_entries[i] = cpuid_entry;
28243+ }
28244 vcpu->arch.cpuid_nent = cpuid->nent;
28245 kvm_apic_set_version(vcpu);
28246 kvm_x86_ops->cpuid_update(vcpu);
28247@@ -189,15 +194,19 @@ int kvm_vcpu_ioctl_get_cpuid2(struct kvm_vcpu *vcpu,
28248 struct kvm_cpuid2 *cpuid,
28249 struct kvm_cpuid_entry2 __user *entries)
28250 {
28251- int r;
28252+ int r, i;
28253
28254 r = -E2BIG;
28255 if (cpuid->nent < vcpu->arch.cpuid_nent)
28256 goto out;
28257 r = -EFAULT;
28258- if (copy_to_user(entries, &vcpu->arch.cpuid_entries,
28259- vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2)))
28260+ if (!access_ok(VERIFY_WRITE, entries, vcpu->arch.cpuid_nent * sizeof(struct kvm_cpuid_entry2)))
28261 goto out;
28262+ for (i = 0; i < vcpu->arch.cpuid_nent; ++i) {
28263+ struct kvm_cpuid_entry2 cpuid_entry = vcpu->arch.cpuid_entries[i];
28264+ if (__copy_to_user(entries + i, &cpuid_entry, sizeof(cpuid_entry)))
28265+ goto out;
28266+ }
28267 return 0;
28268
28269 out:
28270diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
28271index 0069118..c28ec0a 100644
28272--- a/arch/x86/kvm/lapic.c
28273+++ b/arch/x86/kvm/lapic.c
28274@@ -55,7 +55,7 @@
28275 #define APIC_BUS_CYCLE_NS 1
28276
28277 /* #define apic_debug(fmt,arg...) printk(KERN_WARNING fmt,##arg) */
28278-#define apic_debug(fmt, arg...)
28279+#define apic_debug(fmt, arg...) do {} while (0)
28280
28281 #define APIC_LVT_NUM 6
28282 /* 14 is the version for Xeon and Pentium 8.4.8*/
28283diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h
28284index 123efd3..ad7726e 100644
28285--- a/arch/x86/kvm/paging_tmpl.h
28286+++ b/arch/x86/kvm/paging_tmpl.h
28287@@ -331,7 +331,7 @@ retry_walk:
28288 if (unlikely(kvm_is_error_hva(host_addr)))
28289 goto error;
28290
28291- ptep_user = (pt_element_t __user *)((void *)host_addr + offset);
28292+ ptep_user = (pt_element_t __force_user *)((void *)host_addr + offset);
28293 if (unlikely(__copy_from_user(&pte, ptep_user, sizeof(pte))))
28294 goto error;
28295 walker->ptep_user[walker->level - 1] = ptep_user;
28296diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
28297index 7f4f9c2..67b1db0 100644
28298--- a/arch/x86/kvm/svm.c
28299+++ b/arch/x86/kvm/svm.c
28300@@ -3535,7 +3535,11 @@ static void reload_tss(struct kvm_vcpu *vcpu)
28301 int cpu = raw_smp_processor_id();
28302
28303 struct svm_cpu_data *sd = per_cpu(svm_data, cpu);
28304+
28305+ pax_open_kernel();
28306 sd->tss_desc->type = 9; /* available 32/64-bit TSS */
28307+ pax_close_kernel();
28308+
28309 load_TR_desc();
28310 }
28311
28312@@ -3936,6 +3940,10 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
28313 #endif
28314 #endif
28315
28316+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
28317+ __set_fs(current_thread_info()->addr_limit);
28318+#endif
28319+
28320 reload_tss(vcpu);
28321
28322 local_irq_disable();
28323diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
28324index 138ceff..2e584f0 100644
28325--- a/arch/x86/kvm/vmx.c
28326+++ b/arch/x86/kvm/vmx.c
28327@@ -1339,12 +1339,12 @@ static void vmcs_write64(unsigned long field, u64 value)
28328 #endif
28329 }
28330
28331-static void vmcs_clear_bits(unsigned long field, u32 mask)
28332+static void vmcs_clear_bits(unsigned long field, unsigned long mask)
28333 {
28334 vmcs_writel(field, vmcs_readl(field) & ~mask);
28335 }
28336
28337-static void vmcs_set_bits(unsigned long field, u32 mask)
28338+static void vmcs_set_bits(unsigned long field, unsigned long mask)
28339 {
28340 vmcs_writel(field, vmcs_readl(field) | mask);
28341 }
28342@@ -1604,7 +1604,11 @@ static void reload_tss(void)
28343 struct desc_struct *descs;
28344
28345 descs = (void *)gdt->address;
28346+
28347+ pax_open_kernel();
28348 descs[GDT_ENTRY_TSS].type = 9; /* available TSS */
28349+ pax_close_kernel();
28350+
28351 load_TR_desc();
28352 }
28353
28354@@ -1832,6 +1836,10 @@ static void vmx_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
28355 vmcs_writel(HOST_TR_BASE, kvm_read_tr_base()); /* 22.2.4 */
28356 vmcs_writel(HOST_GDTR_BASE, gdt->address); /* 22.2.4 */
28357
28358+#ifdef CONFIG_PAX_PER_CPU_PGD
28359+ vmcs_writel(HOST_CR3, read_cr3()); /* 22.2.3 FIXME: shadow tables */
28360+#endif
28361+
28362 rdmsrl(MSR_IA32_SYSENTER_ESP, sysenter_esp);
28363 vmcs_writel(HOST_IA32_SYSENTER_ESP, sysenter_esp); /* 22.2.3 */
28364 vmx->loaded_vmcs->cpu = cpu;
28365@@ -2121,7 +2129,7 @@ static void setup_msrs(struct vcpu_vmx *vmx)
28366 * reads and returns guest's timestamp counter "register"
28367 * guest_tsc = host_tsc + tsc_offset -- 21.3
28368 */
28369-static u64 guest_read_tsc(void)
28370+static u64 __intentional_overflow(-1) guest_read_tsc(void)
28371 {
28372 u64 host_tsc, tsc_offset;
28373
28374@@ -3093,8 +3101,11 @@ static __init int hardware_setup(void)
28375 if (!cpu_has_vmx_flexpriority())
28376 flexpriority_enabled = 0;
28377
28378- if (!cpu_has_vmx_tpr_shadow())
28379- kvm_x86_ops->update_cr8_intercept = NULL;
28380+ if (!cpu_has_vmx_tpr_shadow()) {
28381+ pax_open_kernel();
28382+ *(void **)&kvm_x86_ops->update_cr8_intercept = NULL;
28383+ pax_close_kernel();
28384+ }
28385
28386 if (enable_ept && !cpu_has_vmx_ept_2m_page())
28387 kvm_disable_largepages();
28388@@ -3105,13 +3116,15 @@ static __init int hardware_setup(void)
28389 if (!cpu_has_vmx_apicv())
28390 enable_apicv = 0;
28391
28392+ pax_open_kernel();
28393 if (enable_apicv)
28394- kvm_x86_ops->update_cr8_intercept = NULL;
28395+ *(void **)&kvm_x86_ops->update_cr8_intercept = NULL;
28396 else {
28397- kvm_x86_ops->hwapic_irr_update = NULL;
28398- kvm_x86_ops->deliver_posted_interrupt = NULL;
28399- kvm_x86_ops->sync_pir_to_irr = vmx_sync_pir_to_irr_dummy;
28400+ *(void **)&kvm_x86_ops->hwapic_irr_update = NULL;
28401+ *(void **)&kvm_x86_ops->deliver_posted_interrupt = NULL;
28402+ *(void **)&kvm_x86_ops->sync_pir_to_irr = vmx_sync_pir_to_irr_dummy;
28403 }
28404+ pax_close_kernel();
28405
28406 if (nested)
28407 nested_vmx_setup_ctls_msrs();
28408@@ -4235,7 +4248,10 @@ static void vmx_set_constant_host_state(struct vcpu_vmx *vmx)
28409
28410 vmcs_writel(HOST_CR0, read_cr0() & ~X86_CR0_TS); /* 22.2.3 */
28411 vmcs_writel(HOST_CR4, read_cr4()); /* 22.2.3, 22.2.5 */
28412+
28413+#ifndef CONFIG_PAX_PER_CPU_PGD
28414 vmcs_writel(HOST_CR3, read_cr3()); /* 22.2.3 FIXME: shadow tables */
28415+#endif
28416
28417 vmcs_write16(HOST_CS_SELECTOR, __KERNEL_CS); /* 22.2.4 */
28418 #ifdef CONFIG_X86_64
28419@@ -4257,7 +4273,7 @@ static void vmx_set_constant_host_state(struct vcpu_vmx *vmx)
28420 vmcs_writel(HOST_IDTR_BASE, dt.address); /* 22.2.4 */
28421 vmx->host_idt_base = dt.address;
28422
28423- vmcs_writel(HOST_RIP, vmx_return); /* 22.2.5 */
28424+ vmcs_writel(HOST_RIP, ktla_ktva(vmx_return)); /* 22.2.5 */
28425
28426 rdmsr(MSR_IA32_SYSENTER_CS, low32, high32);
28427 vmcs_write32(HOST_IA32_SYSENTER_CS, low32);
28428@@ -7333,6 +7349,12 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
28429 "jmp 2f \n\t"
28430 "1: " __ex(ASM_VMX_VMRESUME) "\n\t"
28431 "2: "
28432+
28433+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
28434+ "ljmp %[cs],$3f\n\t"
28435+ "3: "
28436+#endif
28437+
28438 /* Save guest registers, load host registers, keep flags */
28439 "mov %0, %c[wordsize](%%" _ASM_SP ") \n\t"
28440 "pop %0 \n\t"
28441@@ -7385,6 +7407,11 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
28442 #endif
28443 [cr2]"i"(offsetof(struct vcpu_vmx, vcpu.arch.cr2)),
28444 [wordsize]"i"(sizeof(ulong))
28445+
28446+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
28447+ ,[cs]"i"(__KERNEL_CS)
28448+#endif
28449+
28450 : "cc", "memory"
28451 #ifdef CONFIG_X86_64
28452 , "rax", "rbx", "rdi", "rsi"
28453@@ -7398,7 +7425,7 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
28454 if (debugctlmsr)
28455 update_debugctlmsr(debugctlmsr);
28456
28457-#ifndef CONFIG_X86_64
28458+#ifdef CONFIG_X86_32
28459 /*
28460 * The sysexit path does not restore ds/es, so we must set them to
28461 * a reasonable value ourselves.
28462@@ -7407,8 +7434,18 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu)
28463 * may be executed in interrupt context, which saves and restore segments
28464 * around it, nullifying its effect.
28465 */
28466- loadsegment(ds, __USER_DS);
28467- loadsegment(es, __USER_DS);
28468+ loadsegment(ds, __KERNEL_DS);
28469+ loadsegment(es, __KERNEL_DS);
28470+ loadsegment(ss, __KERNEL_DS);
28471+
28472+#ifdef CONFIG_PAX_KERNEXEC
28473+ loadsegment(fs, __KERNEL_PERCPU);
28474+#endif
28475+
28476+#ifdef CONFIG_PAX_MEMORY_UDEREF
28477+ __set_fs(current_thread_info()->addr_limit);
28478+#endif
28479+
28480 #endif
28481
28482 vcpu->arch.regs_avail = ~((1 << VCPU_REGS_RIP) | (1 << VCPU_REGS_RSP)
28483diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
28484index 20316c6..9b3dddc 100644
28485--- a/arch/x86/kvm/x86.c
28486+++ b/arch/x86/kvm/x86.c
28487@@ -1822,8 +1822,8 @@ static int xen_hvm_config(struct kvm_vcpu *vcpu, u64 data)
28488 {
28489 struct kvm *kvm = vcpu->kvm;
28490 int lm = is_long_mode(vcpu);
28491- u8 *blob_addr = lm ? (u8 *)(long)kvm->arch.xen_hvm_config.blob_addr_64
28492- : (u8 *)(long)kvm->arch.xen_hvm_config.blob_addr_32;
28493+ u8 __user *blob_addr = lm ? (u8 __user *)(long)kvm->arch.xen_hvm_config.blob_addr_64
28494+ : (u8 __user *)(long)kvm->arch.xen_hvm_config.blob_addr_32;
28495 u8 blob_size = lm ? kvm->arch.xen_hvm_config.blob_size_64
28496 : kvm->arch.xen_hvm_config.blob_size_32;
28497 u32 page_num = data & ~PAGE_MASK;
28498@@ -2738,6 +2738,8 @@ long kvm_arch_dev_ioctl(struct file *filp,
28499 if (n < msr_list.nmsrs)
28500 goto out;
28501 r = -EFAULT;
28502+ if (num_msrs_to_save > ARRAY_SIZE(msrs_to_save))
28503+ goto out;
28504 if (copy_to_user(user_msr_list->indices, &msrs_to_save,
28505 num_msrs_to_save * sizeof(u32)))
28506 goto out;
28507@@ -5574,7 +5576,7 @@ static struct notifier_block pvclock_gtod_notifier = {
28508 };
28509 #endif
28510
28511-int kvm_arch_init(void *opaque)
28512+int kvm_arch_init(const void *opaque)
28513 {
28514 int r;
28515 struct kvm_x86_ops *ops = opaque;
28516diff --git a/arch/x86/lguest/boot.c b/arch/x86/lguest/boot.c
28517index aae9413..d11e829 100644
28518--- a/arch/x86/lguest/boot.c
28519+++ b/arch/x86/lguest/boot.c
28520@@ -1206,9 +1206,10 @@ static __init int early_put_chars(u32 vtermno, const char *buf, int count)
28521 * Rebooting also tells the Host we're finished, but the RESTART flag tells the
28522 * Launcher to reboot us.
28523 */
28524-static void lguest_restart(char *reason)
28525+static __noreturn void lguest_restart(char *reason)
28526 {
28527 hcall(LHCALL_SHUTDOWN, __pa(reason), LGUEST_SHUTDOWN_RESTART, 0, 0);
28528+ BUG();
28529 }
28530
28531 /*G:050
28532diff --git a/arch/x86/lib/atomic64_386_32.S b/arch/x86/lib/atomic64_386_32.S
28533index 00933d5..3a64af9 100644
28534--- a/arch/x86/lib/atomic64_386_32.S
28535+++ b/arch/x86/lib/atomic64_386_32.S
28536@@ -48,6 +48,10 @@ BEGIN(read)
28537 movl (v), %eax
28538 movl 4(v), %edx
28539 RET_ENDP
28540+BEGIN(read_unchecked)
28541+ movl (v), %eax
28542+ movl 4(v), %edx
28543+RET_ENDP
28544 #undef v
28545
28546 #define v %esi
28547@@ -55,6 +59,10 @@ BEGIN(set)
28548 movl %ebx, (v)
28549 movl %ecx, 4(v)
28550 RET_ENDP
28551+BEGIN(set_unchecked)
28552+ movl %ebx, (v)
28553+ movl %ecx, 4(v)
28554+RET_ENDP
28555 #undef v
28556
28557 #define v %esi
28558@@ -70,6 +78,20 @@ RET_ENDP
28559 BEGIN(add)
28560 addl %eax, (v)
28561 adcl %edx, 4(v)
28562+
28563+#ifdef CONFIG_PAX_REFCOUNT
28564+ jno 0f
28565+ subl %eax, (v)
28566+ sbbl %edx, 4(v)
28567+ int $4
28568+0:
28569+ _ASM_EXTABLE(0b, 0b)
28570+#endif
28571+
28572+RET_ENDP
28573+BEGIN(add_unchecked)
28574+ addl %eax, (v)
28575+ adcl %edx, 4(v)
28576 RET_ENDP
28577 #undef v
28578
28579@@ -77,6 +99,24 @@ RET_ENDP
28580 BEGIN(add_return)
28581 addl (v), %eax
28582 adcl 4(v), %edx
28583+
28584+#ifdef CONFIG_PAX_REFCOUNT
28585+ into
28586+1234:
28587+ _ASM_EXTABLE(1234b, 2f)
28588+#endif
28589+
28590+ movl %eax, (v)
28591+ movl %edx, 4(v)
28592+
28593+#ifdef CONFIG_PAX_REFCOUNT
28594+2:
28595+#endif
28596+
28597+RET_ENDP
28598+BEGIN(add_return_unchecked)
28599+ addl (v), %eax
28600+ adcl 4(v), %edx
28601 movl %eax, (v)
28602 movl %edx, 4(v)
28603 RET_ENDP
28604@@ -86,6 +126,20 @@ RET_ENDP
28605 BEGIN(sub)
28606 subl %eax, (v)
28607 sbbl %edx, 4(v)
28608+
28609+#ifdef CONFIG_PAX_REFCOUNT
28610+ jno 0f
28611+ addl %eax, (v)
28612+ adcl %edx, 4(v)
28613+ int $4
28614+0:
28615+ _ASM_EXTABLE(0b, 0b)
28616+#endif
28617+
28618+RET_ENDP
28619+BEGIN(sub_unchecked)
28620+ subl %eax, (v)
28621+ sbbl %edx, 4(v)
28622 RET_ENDP
28623 #undef v
28624
28625@@ -96,6 +150,27 @@ BEGIN(sub_return)
28626 sbbl $0, %edx
28627 addl (v), %eax
28628 adcl 4(v), %edx
28629+
28630+#ifdef CONFIG_PAX_REFCOUNT
28631+ into
28632+1234:
28633+ _ASM_EXTABLE(1234b, 2f)
28634+#endif
28635+
28636+ movl %eax, (v)
28637+ movl %edx, 4(v)
28638+
28639+#ifdef CONFIG_PAX_REFCOUNT
28640+2:
28641+#endif
28642+
28643+RET_ENDP
28644+BEGIN(sub_return_unchecked)
28645+ negl %edx
28646+ negl %eax
28647+ sbbl $0, %edx
28648+ addl (v), %eax
28649+ adcl 4(v), %edx
28650 movl %eax, (v)
28651 movl %edx, 4(v)
28652 RET_ENDP
28653@@ -105,6 +180,20 @@ RET_ENDP
28654 BEGIN(inc)
28655 addl $1, (v)
28656 adcl $0, 4(v)
28657+
28658+#ifdef CONFIG_PAX_REFCOUNT
28659+ jno 0f
28660+ subl $1, (v)
28661+ sbbl $0, 4(v)
28662+ int $4
28663+0:
28664+ _ASM_EXTABLE(0b, 0b)
28665+#endif
28666+
28667+RET_ENDP
28668+BEGIN(inc_unchecked)
28669+ addl $1, (v)
28670+ adcl $0, 4(v)
28671 RET_ENDP
28672 #undef v
28673
28674@@ -114,6 +203,26 @@ BEGIN(inc_return)
28675 movl 4(v), %edx
28676 addl $1, %eax
28677 adcl $0, %edx
28678+
28679+#ifdef CONFIG_PAX_REFCOUNT
28680+ into
28681+1234:
28682+ _ASM_EXTABLE(1234b, 2f)
28683+#endif
28684+
28685+ movl %eax, (v)
28686+ movl %edx, 4(v)
28687+
28688+#ifdef CONFIG_PAX_REFCOUNT
28689+2:
28690+#endif
28691+
28692+RET_ENDP
28693+BEGIN(inc_return_unchecked)
28694+ movl (v), %eax
28695+ movl 4(v), %edx
28696+ addl $1, %eax
28697+ adcl $0, %edx
28698 movl %eax, (v)
28699 movl %edx, 4(v)
28700 RET_ENDP
28701@@ -123,6 +232,20 @@ RET_ENDP
28702 BEGIN(dec)
28703 subl $1, (v)
28704 sbbl $0, 4(v)
28705+
28706+#ifdef CONFIG_PAX_REFCOUNT
28707+ jno 0f
28708+ addl $1, (v)
28709+ adcl $0, 4(v)
28710+ int $4
28711+0:
28712+ _ASM_EXTABLE(0b, 0b)
28713+#endif
28714+
28715+RET_ENDP
28716+BEGIN(dec_unchecked)
28717+ subl $1, (v)
28718+ sbbl $0, 4(v)
28719 RET_ENDP
28720 #undef v
28721
28722@@ -132,6 +255,26 @@ BEGIN(dec_return)
28723 movl 4(v), %edx
28724 subl $1, %eax
28725 sbbl $0, %edx
28726+
28727+#ifdef CONFIG_PAX_REFCOUNT
28728+ into
28729+1234:
28730+ _ASM_EXTABLE(1234b, 2f)
28731+#endif
28732+
28733+ movl %eax, (v)
28734+ movl %edx, 4(v)
28735+
28736+#ifdef CONFIG_PAX_REFCOUNT
28737+2:
28738+#endif
28739+
28740+RET_ENDP
28741+BEGIN(dec_return_unchecked)
28742+ movl (v), %eax
28743+ movl 4(v), %edx
28744+ subl $1, %eax
28745+ sbbl $0, %edx
28746 movl %eax, (v)
28747 movl %edx, 4(v)
28748 RET_ENDP
28749@@ -143,6 +286,13 @@ BEGIN(add_unless)
28750 adcl %edx, %edi
28751 addl (v), %eax
28752 adcl 4(v), %edx
28753+
28754+#ifdef CONFIG_PAX_REFCOUNT
28755+ into
28756+1234:
28757+ _ASM_EXTABLE(1234b, 2f)
28758+#endif
28759+
28760 cmpl %eax, %ecx
28761 je 3f
28762 1:
28763@@ -168,6 +318,13 @@ BEGIN(inc_not_zero)
28764 1:
28765 addl $1, %eax
28766 adcl $0, %edx
28767+
28768+#ifdef CONFIG_PAX_REFCOUNT
28769+ into
28770+1234:
28771+ _ASM_EXTABLE(1234b, 2f)
28772+#endif
28773+
28774 movl %eax, (v)
28775 movl %edx, 4(v)
28776 movl $1, %eax
28777@@ -186,6 +343,13 @@ BEGIN(dec_if_positive)
28778 movl 4(v), %edx
28779 subl $1, %eax
28780 sbbl $0, %edx
28781+
28782+#ifdef CONFIG_PAX_REFCOUNT
28783+ into
28784+1234:
28785+ _ASM_EXTABLE(1234b, 1f)
28786+#endif
28787+
28788 js 1f
28789 movl %eax, (v)
28790 movl %edx, 4(v)
28791diff --git a/arch/x86/lib/atomic64_cx8_32.S b/arch/x86/lib/atomic64_cx8_32.S
28792index f5cc9eb..51fa319 100644
28793--- a/arch/x86/lib/atomic64_cx8_32.S
28794+++ b/arch/x86/lib/atomic64_cx8_32.S
28795@@ -35,10 +35,20 @@ ENTRY(atomic64_read_cx8)
28796 CFI_STARTPROC
28797
28798 read64 %ecx
28799+ pax_force_retaddr
28800 ret
28801 CFI_ENDPROC
28802 ENDPROC(atomic64_read_cx8)
28803
28804+ENTRY(atomic64_read_unchecked_cx8)
28805+ CFI_STARTPROC
28806+
28807+ read64 %ecx
28808+ pax_force_retaddr
28809+ ret
28810+ CFI_ENDPROC
28811+ENDPROC(atomic64_read_unchecked_cx8)
28812+
28813 ENTRY(atomic64_set_cx8)
28814 CFI_STARTPROC
28815
28816@@ -48,10 +58,25 @@ ENTRY(atomic64_set_cx8)
28817 cmpxchg8b (%esi)
28818 jne 1b
28819
28820+ pax_force_retaddr
28821 ret
28822 CFI_ENDPROC
28823 ENDPROC(atomic64_set_cx8)
28824
28825+ENTRY(atomic64_set_unchecked_cx8)
28826+ CFI_STARTPROC
28827+
28828+1:
28829+/* we don't need LOCK_PREFIX since aligned 64-bit writes
28830+ * are atomic on 586 and newer */
28831+ cmpxchg8b (%esi)
28832+ jne 1b
28833+
28834+ pax_force_retaddr
28835+ ret
28836+ CFI_ENDPROC
28837+ENDPROC(atomic64_set_unchecked_cx8)
28838+
28839 ENTRY(atomic64_xchg_cx8)
28840 CFI_STARTPROC
28841
28842@@ -60,12 +85,13 @@ ENTRY(atomic64_xchg_cx8)
28843 cmpxchg8b (%esi)
28844 jne 1b
28845
28846+ pax_force_retaddr
28847 ret
28848 CFI_ENDPROC
28849 ENDPROC(atomic64_xchg_cx8)
28850
28851-.macro addsub_return func ins insc
28852-ENTRY(atomic64_\func\()_return_cx8)
28853+.macro addsub_return func ins insc unchecked=""
28854+ENTRY(atomic64_\func\()_return\unchecked\()_cx8)
28855 CFI_STARTPROC
28856 SAVE ebp
28857 SAVE ebx
28858@@ -82,27 +108,44 @@ ENTRY(atomic64_\func\()_return_cx8)
28859 movl %edx, %ecx
28860 \ins\()l %esi, %ebx
28861 \insc\()l %edi, %ecx
28862+
28863+.ifb \unchecked
28864+#ifdef CONFIG_PAX_REFCOUNT
28865+ into
28866+2:
28867+ _ASM_EXTABLE(2b, 3f)
28868+#endif
28869+.endif
28870+
28871 LOCK_PREFIX
28872 cmpxchg8b (%ebp)
28873 jne 1b
28874-
28875-10:
28876 movl %ebx, %eax
28877 movl %ecx, %edx
28878+
28879+.ifb \unchecked
28880+#ifdef CONFIG_PAX_REFCOUNT
28881+3:
28882+#endif
28883+.endif
28884+
28885 RESTORE edi
28886 RESTORE esi
28887 RESTORE ebx
28888 RESTORE ebp
28889+ pax_force_retaddr
28890 ret
28891 CFI_ENDPROC
28892-ENDPROC(atomic64_\func\()_return_cx8)
28893+ENDPROC(atomic64_\func\()_return\unchecked\()_cx8)
28894 .endm
28895
28896 addsub_return add add adc
28897 addsub_return sub sub sbb
28898+addsub_return add add adc _unchecked
28899+addsub_return sub sub sbb _unchecked
28900
28901-.macro incdec_return func ins insc
28902-ENTRY(atomic64_\func\()_return_cx8)
28903+.macro incdec_return func ins insc unchecked=""
28904+ENTRY(atomic64_\func\()_return\unchecked\()_cx8)
28905 CFI_STARTPROC
28906 SAVE ebx
28907
28908@@ -112,21 +155,39 @@ ENTRY(atomic64_\func\()_return_cx8)
28909 movl %edx, %ecx
28910 \ins\()l $1, %ebx
28911 \insc\()l $0, %ecx
28912+
28913+.ifb \unchecked
28914+#ifdef CONFIG_PAX_REFCOUNT
28915+ into
28916+2:
28917+ _ASM_EXTABLE(2b, 3f)
28918+#endif
28919+.endif
28920+
28921 LOCK_PREFIX
28922 cmpxchg8b (%esi)
28923 jne 1b
28924
28925-10:
28926 movl %ebx, %eax
28927 movl %ecx, %edx
28928+
28929+.ifb \unchecked
28930+#ifdef CONFIG_PAX_REFCOUNT
28931+3:
28932+#endif
28933+.endif
28934+
28935 RESTORE ebx
28936+ pax_force_retaddr
28937 ret
28938 CFI_ENDPROC
28939-ENDPROC(atomic64_\func\()_return_cx8)
28940+ENDPROC(atomic64_\func\()_return\unchecked\()_cx8)
28941 .endm
28942
28943 incdec_return inc add adc
28944 incdec_return dec sub sbb
28945+incdec_return inc add adc _unchecked
28946+incdec_return dec sub sbb _unchecked
28947
28948 ENTRY(atomic64_dec_if_positive_cx8)
28949 CFI_STARTPROC
28950@@ -138,6 +199,13 @@ ENTRY(atomic64_dec_if_positive_cx8)
28951 movl %edx, %ecx
28952 subl $1, %ebx
28953 sbb $0, %ecx
28954+
28955+#ifdef CONFIG_PAX_REFCOUNT
28956+ into
28957+1234:
28958+ _ASM_EXTABLE(1234b, 2f)
28959+#endif
28960+
28961 js 2f
28962 LOCK_PREFIX
28963 cmpxchg8b (%esi)
28964@@ -147,6 +215,7 @@ ENTRY(atomic64_dec_if_positive_cx8)
28965 movl %ebx, %eax
28966 movl %ecx, %edx
28967 RESTORE ebx
28968+ pax_force_retaddr
28969 ret
28970 CFI_ENDPROC
28971 ENDPROC(atomic64_dec_if_positive_cx8)
28972@@ -171,6 +240,13 @@ ENTRY(atomic64_add_unless_cx8)
28973 movl %edx, %ecx
28974 addl %ebp, %ebx
28975 adcl %edi, %ecx
28976+
28977+#ifdef CONFIG_PAX_REFCOUNT
28978+ into
28979+1234:
28980+ _ASM_EXTABLE(1234b, 3f)
28981+#endif
28982+
28983 LOCK_PREFIX
28984 cmpxchg8b (%esi)
28985 jne 1b
28986@@ -181,6 +257,7 @@ ENTRY(atomic64_add_unless_cx8)
28987 CFI_ADJUST_CFA_OFFSET -8
28988 RESTORE ebx
28989 RESTORE ebp
28990+ pax_force_retaddr
28991 ret
28992 4:
28993 cmpl %edx, 4(%esp)
28994@@ -203,6 +280,13 @@ ENTRY(atomic64_inc_not_zero_cx8)
28995 xorl %ecx, %ecx
28996 addl $1, %ebx
28997 adcl %edx, %ecx
28998+
28999+#ifdef CONFIG_PAX_REFCOUNT
29000+ into
29001+1234:
29002+ _ASM_EXTABLE(1234b, 3f)
29003+#endif
29004+
29005 LOCK_PREFIX
29006 cmpxchg8b (%esi)
29007 jne 1b
29008@@ -210,6 +294,7 @@ ENTRY(atomic64_inc_not_zero_cx8)
29009 movl $1, %eax
29010 3:
29011 RESTORE ebx
29012+ pax_force_retaddr
29013 ret
29014 CFI_ENDPROC
29015 ENDPROC(atomic64_inc_not_zero_cx8)
29016diff --git a/arch/x86/lib/checksum_32.S b/arch/x86/lib/checksum_32.S
29017index e78b8ee..7e173a8 100644
29018--- a/arch/x86/lib/checksum_32.S
29019+++ b/arch/x86/lib/checksum_32.S
29020@@ -29,7 +29,8 @@
29021 #include <asm/dwarf2.h>
29022 #include <asm/errno.h>
29023 #include <asm/asm.h>
29024-
29025+#include <asm/segment.h>
29026+
29027 /*
29028 * computes a partial checksum, e.g. for TCP/UDP fragments
29029 */
29030@@ -293,9 +294,24 @@ unsigned int csum_partial_copy_generic (const char *src, char *dst,
29031
29032 #define ARGBASE 16
29033 #define FP 12
29034-
29035-ENTRY(csum_partial_copy_generic)
29036+
29037+ENTRY(csum_partial_copy_generic_to_user)
29038 CFI_STARTPROC
29039+
29040+#ifdef CONFIG_PAX_MEMORY_UDEREF
29041+ pushl_cfi %gs
29042+ popl_cfi %es
29043+ jmp csum_partial_copy_generic
29044+#endif
29045+
29046+ENTRY(csum_partial_copy_generic_from_user)
29047+
29048+#ifdef CONFIG_PAX_MEMORY_UDEREF
29049+ pushl_cfi %gs
29050+ popl_cfi %ds
29051+#endif
29052+
29053+ENTRY(csum_partial_copy_generic)
29054 subl $4,%esp
29055 CFI_ADJUST_CFA_OFFSET 4
29056 pushl_cfi %edi
29057@@ -317,7 +333,7 @@ ENTRY(csum_partial_copy_generic)
29058 jmp 4f
29059 SRC(1: movw (%esi), %bx )
29060 addl $2, %esi
29061-DST( movw %bx, (%edi) )
29062+DST( movw %bx, %es:(%edi) )
29063 addl $2, %edi
29064 addw %bx, %ax
29065 adcl $0, %eax
29066@@ -329,30 +345,30 @@ DST( movw %bx, (%edi) )
29067 SRC(1: movl (%esi), %ebx )
29068 SRC( movl 4(%esi), %edx )
29069 adcl %ebx, %eax
29070-DST( movl %ebx, (%edi) )
29071+DST( movl %ebx, %es:(%edi) )
29072 adcl %edx, %eax
29073-DST( movl %edx, 4(%edi) )
29074+DST( movl %edx, %es:4(%edi) )
29075
29076 SRC( movl 8(%esi), %ebx )
29077 SRC( movl 12(%esi), %edx )
29078 adcl %ebx, %eax
29079-DST( movl %ebx, 8(%edi) )
29080+DST( movl %ebx, %es:8(%edi) )
29081 adcl %edx, %eax
29082-DST( movl %edx, 12(%edi) )
29083+DST( movl %edx, %es:12(%edi) )
29084
29085 SRC( movl 16(%esi), %ebx )
29086 SRC( movl 20(%esi), %edx )
29087 adcl %ebx, %eax
29088-DST( movl %ebx, 16(%edi) )
29089+DST( movl %ebx, %es:16(%edi) )
29090 adcl %edx, %eax
29091-DST( movl %edx, 20(%edi) )
29092+DST( movl %edx, %es:20(%edi) )
29093
29094 SRC( movl 24(%esi), %ebx )
29095 SRC( movl 28(%esi), %edx )
29096 adcl %ebx, %eax
29097-DST( movl %ebx, 24(%edi) )
29098+DST( movl %ebx, %es:24(%edi) )
29099 adcl %edx, %eax
29100-DST( movl %edx, 28(%edi) )
29101+DST( movl %edx, %es:28(%edi) )
29102
29103 lea 32(%esi), %esi
29104 lea 32(%edi), %edi
29105@@ -366,7 +382,7 @@ DST( movl %edx, 28(%edi) )
29106 shrl $2, %edx # This clears CF
29107 SRC(3: movl (%esi), %ebx )
29108 adcl %ebx, %eax
29109-DST( movl %ebx, (%edi) )
29110+DST( movl %ebx, %es:(%edi) )
29111 lea 4(%esi), %esi
29112 lea 4(%edi), %edi
29113 dec %edx
29114@@ -378,12 +394,12 @@ DST( movl %ebx, (%edi) )
29115 jb 5f
29116 SRC( movw (%esi), %cx )
29117 leal 2(%esi), %esi
29118-DST( movw %cx, (%edi) )
29119+DST( movw %cx, %es:(%edi) )
29120 leal 2(%edi), %edi
29121 je 6f
29122 shll $16,%ecx
29123 SRC(5: movb (%esi), %cl )
29124-DST( movb %cl, (%edi) )
29125+DST( movb %cl, %es:(%edi) )
29126 6: addl %ecx, %eax
29127 adcl $0, %eax
29128 7:
29129@@ -394,7 +410,7 @@ DST( movb %cl, (%edi) )
29130
29131 6001:
29132 movl ARGBASE+20(%esp), %ebx # src_err_ptr
29133- movl $-EFAULT, (%ebx)
29134+ movl $-EFAULT, %ss:(%ebx)
29135
29136 # zero the complete destination - computing the rest
29137 # is too much work
29138@@ -407,11 +423,15 @@ DST( movb %cl, (%edi) )
29139
29140 6002:
29141 movl ARGBASE+24(%esp), %ebx # dst_err_ptr
29142- movl $-EFAULT,(%ebx)
29143+ movl $-EFAULT,%ss:(%ebx)
29144 jmp 5000b
29145
29146 .previous
29147
29148+ pushl_cfi %ss
29149+ popl_cfi %ds
29150+ pushl_cfi %ss
29151+ popl_cfi %es
29152 popl_cfi %ebx
29153 CFI_RESTORE ebx
29154 popl_cfi %esi
29155@@ -421,26 +441,43 @@ DST( movb %cl, (%edi) )
29156 popl_cfi %ecx # equivalent to addl $4,%esp
29157 ret
29158 CFI_ENDPROC
29159-ENDPROC(csum_partial_copy_generic)
29160+ENDPROC(csum_partial_copy_generic_to_user)
29161
29162 #else
29163
29164 /* Version for PentiumII/PPro */
29165
29166 #define ROUND1(x) \
29167+ nop; nop; nop; \
29168 SRC(movl x(%esi), %ebx ) ; \
29169 addl %ebx, %eax ; \
29170- DST(movl %ebx, x(%edi) ) ;
29171+ DST(movl %ebx, %es:x(%edi)) ;
29172
29173 #define ROUND(x) \
29174+ nop; nop; nop; \
29175 SRC(movl x(%esi), %ebx ) ; \
29176 adcl %ebx, %eax ; \
29177- DST(movl %ebx, x(%edi) ) ;
29178+ DST(movl %ebx, %es:x(%edi)) ;
29179
29180 #define ARGBASE 12
29181-
29182-ENTRY(csum_partial_copy_generic)
29183+
29184+ENTRY(csum_partial_copy_generic_to_user)
29185 CFI_STARTPROC
29186+
29187+#ifdef CONFIG_PAX_MEMORY_UDEREF
29188+ pushl_cfi %gs
29189+ popl_cfi %es
29190+ jmp csum_partial_copy_generic
29191+#endif
29192+
29193+ENTRY(csum_partial_copy_generic_from_user)
29194+
29195+#ifdef CONFIG_PAX_MEMORY_UDEREF
29196+ pushl_cfi %gs
29197+ popl_cfi %ds
29198+#endif
29199+
29200+ENTRY(csum_partial_copy_generic)
29201 pushl_cfi %ebx
29202 CFI_REL_OFFSET ebx, 0
29203 pushl_cfi %edi
29204@@ -461,7 +498,7 @@ ENTRY(csum_partial_copy_generic)
29205 subl %ebx, %edi
29206 lea -1(%esi),%edx
29207 andl $-32,%edx
29208- lea 3f(%ebx,%ebx), %ebx
29209+ lea 3f(%ebx,%ebx,2), %ebx
29210 testl %esi, %esi
29211 jmp *%ebx
29212 1: addl $64,%esi
29213@@ -482,19 +519,19 @@ ENTRY(csum_partial_copy_generic)
29214 jb 5f
29215 SRC( movw (%esi), %dx )
29216 leal 2(%esi), %esi
29217-DST( movw %dx, (%edi) )
29218+DST( movw %dx, %es:(%edi) )
29219 leal 2(%edi), %edi
29220 je 6f
29221 shll $16,%edx
29222 5:
29223 SRC( movb (%esi), %dl )
29224-DST( movb %dl, (%edi) )
29225+DST( movb %dl, %es:(%edi) )
29226 6: addl %edx, %eax
29227 adcl $0, %eax
29228 7:
29229 .section .fixup, "ax"
29230 6001: movl ARGBASE+20(%esp), %ebx # src_err_ptr
29231- movl $-EFAULT, (%ebx)
29232+ movl $-EFAULT, %ss:(%ebx)
29233 # zero the complete destination (computing the rest is too much work)
29234 movl ARGBASE+8(%esp),%edi # dst
29235 movl ARGBASE+12(%esp),%ecx # len
29236@@ -502,10 +539,17 @@ DST( movb %dl, (%edi) )
29237 rep; stosb
29238 jmp 7b
29239 6002: movl ARGBASE+24(%esp), %ebx # dst_err_ptr
29240- movl $-EFAULT, (%ebx)
29241+ movl $-EFAULT, %ss:(%ebx)
29242 jmp 7b
29243 .previous
29244
29245+#ifdef CONFIG_PAX_MEMORY_UDEREF
29246+ pushl_cfi %ss
29247+ popl_cfi %ds
29248+ pushl_cfi %ss
29249+ popl_cfi %es
29250+#endif
29251+
29252 popl_cfi %esi
29253 CFI_RESTORE esi
29254 popl_cfi %edi
29255@@ -514,7 +558,7 @@ DST( movb %dl, (%edi) )
29256 CFI_RESTORE ebx
29257 ret
29258 CFI_ENDPROC
29259-ENDPROC(csum_partial_copy_generic)
29260+ENDPROC(csum_partial_copy_generic_to_user)
29261
29262 #undef ROUND
29263 #undef ROUND1
29264diff --git a/arch/x86/lib/clear_page_64.S b/arch/x86/lib/clear_page_64.S
29265index f2145cf..cea889d 100644
29266--- a/arch/x86/lib/clear_page_64.S
29267+++ b/arch/x86/lib/clear_page_64.S
29268@@ -11,6 +11,7 @@ ENTRY(clear_page_c)
29269 movl $4096/8,%ecx
29270 xorl %eax,%eax
29271 rep stosq
29272+ pax_force_retaddr
29273 ret
29274 CFI_ENDPROC
29275 ENDPROC(clear_page_c)
29276@@ -20,6 +21,7 @@ ENTRY(clear_page_c_e)
29277 movl $4096,%ecx
29278 xorl %eax,%eax
29279 rep stosb
29280+ pax_force_retaddr
29281 ret
29282 CFI_ENDPROC
29283 ENDPROC(clear_page_c_e)
29284@@ -43,6 +45,7 @@ ENTRY(clear_page)
29285 leaq 64(%rdi),%rdi
29286 jnz .Lloop
29287 nop
29288+ pax_force_retaddr
29289 ret
29290 CFI_ENDPROC
29291 .Lclear_page_end:
29292@@ -58,7 +61,7 @@ ENDPROC(clear_page)
29293
29294 #include <asm/cpufeature.h>
29295
29296- .section .altinstr_replacement,"ax"
29297+ .section .altinstr_replacement,"a"
29298 1: .byte 0xeb /* jmp <disp8> */
29299 .byte (clear_page_c - clear_page) - (2f - 1b) /* offset */
29300 2: .byte 0xeb /* jmp <disp8> */
29301diff --git a/arch/x86/lib/cmpxchg16b_emu.S b/arch/x86/lib/cmpxchg16b_emu.S
29302index 1e572c5..2a162cd 100644
29303--- a/arch/x86/lib/cmpxchg16b_emu.S
29304+++ b/arch/x86/lib/cmpxchg16b_emu.S
29305@@ -53,11 +53,13 @@ this_cpu_cmpxchg16b_emu:
29306
29307 popf
29308 mov $1, %al
29309+ pax_force_retaddr
29310 ret
29311
29312 not_same:
29313 popf
29314 xor %al,%al
29315+ pax_force_retaddr
29316 ret
29317
29318 CFI_ENDPROC
29319diff --git a/arch/x86/lib/copy_page_64.S b/arch/x86/lib/copy_page_64.S
29320index 176cca6..e0d658e 100644
29321--- a/arch/x86/lib/copy_page_64.S
29322+++ b/arch/x86/lib/copy_page_64.S
29323@@ -9,6 +9,7 @@ copy_page_rep:
29324 CFI_STARTPROC
29325 movl $4096/8, %ecx
29326 rep movsq
29327+ pax_force_retaddr
29328 ret
29329 CFI_ENDPROC
29330 ENDPROC(copy_page_rep)
29331@@ -24,8 +25,8 @@ ENTRY(copy_page)
29332 CFI_ADJUST_CFA_OFFSET 2*8
29333 movq %rbx, (%rsp)
29334 CFI_REL_OFFSET rbx, 0
29335- movq %r12, 1*8(%rsp)
29336- CFI_REL_OFFSET r12, 1*8
29337+ movq %r13, 1*8(%rsp)
29338+ CFI_REL_OFFSET r13, 1*8
29339
29340 movl $(4096/64)-5, %ecx
29341 .p2align 4
29342@@ -38,7 +39,7 @@ ENTRY(copy_page)
29343 movq 0x8*4(%rsi), %r9
29344 movq 0x8*5(%rsi), %r10
29345 movq 0x8*6(%rsi), %r11
29346- movq 0x8*7(%rsi), %r12
29347+ movq 0x8*7(%rsi), %r13
29348
29349 prefetcht0 5*64(%rsi)
29350
29351@@ -49,7 +50,7 @@ ENTRY(copy_page)
29352 movq %r9, 0x8*4(%rdi)
29353 movq %r10, 0x8*5(%rdi)
29354 movq %r11, 0x8*6(%rdi)
29355- movq %r12, 0x8*7(%rdi)
29356+ movq %r13, 0x8*7(%rdi)
29357
29358 leaq 64 (%rsi), %rsi
29359 leaq 64 (%rdi), %rdi
29360@@ -68,7 +69,7 @@ ENTRY(copy_page)
29361 movq 0x8*4(%rsi), %r9
29362 movq 0x8*5(%rsi), %r10
29363 movq 0x8*6(%rsi), %r11
29364- movq 0x8*7(%rsi), %r12
29365+ movq 0x8*7(%rsi), %r13
29366
29367 movq %rax, 0x8*0(%rdi)
29368 movq %rbx, 0x8*1(%rdi)
29369@@ -77,7 +78,7 @@ ENTRY(copy_page)
29370 movq %r9, 0x8*4(%rdi)
29371 movq %r10, 0x8*5(%rdi)
29372 movq %r11, 0x8*6(%rdi)
29373- movq %r12, 0x8*7(%rdi)
29374+ movq %r13, 0x8*7(%rdi)
29375
29376 leaq 64(%rdi), %rdi
29377 leaq 64(%rsi), %rsi
29378@@ -85,10 +86,11 @@ ENTRY(copy_page)
29379
29380 movq (%rsp), %rbx
29381 CFI_RESTORE rbx
29382- movq 1*8(%rsp), %r12
29383- CFI_RESTORE r12
29384+ movq 1*8(%rsp), %r13
29385+ CFI_RESTORE r13
29386 addq $2*8, %rsp
29387 CFI_ADJUST_CFA_OFFSET -2*8
29388+ pax_force_retaddr
29389 ret
29390 .Lcopy_page_end:
29391 CFI_ENDPROC
29392@@ -99,7 +101,7 @@ ENDPROC(copy_page)
29393
29394 #include <asm/cpufeature.h>
29395
29396- .section .altinstr_replacement,"ax"
29397+ .section .altinstr_replacement,"a"
29398 1: .byte 0xeb /* jmp <disp8> */
29399 .byte (copy_page_rep - copy_page) - (2f - 1b) /* offset */
29400 2:
29401diff --git a/arch/x86/lib/copy_user_64.S b/arch/x86/lib/copy_user_64.S
29402index dee945d..a84067b 100644
29403--- a/arch/x86/lib/copy_user_64.S
29404+++ b/arch/x86/lib/copy_user_64.S
29405@@ -18,31 +18,7 @@
29406 #include <asm/alternative-asm.h>
29407 #include <asm/asm.h>
29408 #include <asm/smap.h>
29409-
29410-/*
29411- * By placing feature2 after feature1 in altinstructions section, we logically
29412- * implement:
29413- * If CPU has feature2, jmp to alt2 is used
29414- * else if CPU has feature1, jmp to alt1 is used
29415- * else jmp to orig is used.
29416- */
29417- .macro ALTERNATIVE_JUMP feature1,feature2,orig,alt1,alt2
29418-0:
29419- .byte 0xe9 /* 32bit jump */
29420- .long \orig-1f /* by default jump to orig */
29421-1:
29422- .section .altinstr_replacement,"ax"
29423-2: .byte 0xe9 /* near jump with 32bit immediate */
29424- .long \alt1-1b /* offset */ /* or alternatively to alt1 */
29425-3: .byte 0xe9 /* near jump with 32bit immediate */
29426- .long \alt2-1b /* offset */ /* or alternatively to alt2 */
29427- .previous
29428-
29429- .section .altinstructions,"a"
29430- altinstruction_entry 0b,2b,\feature1,5,5
29431- altinstruction_entry 0b,3b,\feature2,5,5
29432- .previous
29433- .endm
29434+#include <asm/pgtable.h>
29435
29436 .macro ALIGN_DESTINATION
29437 #ifdef FIX_ALIGNMENT
29438@@ -70,52 +46,6 @@
29439 #endif
29440 .endm
29441
29442-/* Standard copy_to_user with segment limit checking */
29443-ENTRY(_copy_to_user)
29444- CFI_STARTPROC
29445- GET_THREAD_INFO(%rax)
29446- movq %rdi,%rcx
29447- addq %rdx,%rcx
29448- jc bad_to_user
29449- cmpq TI_addr_limit(%rax),%rcx
29450- ja bad_to_user
29451- ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,X86_FEATURE_ERMS, \
29452- copy_user_generic_unrolled,copy_user_generic_string, \
29453- copy_user_enhanced_fast_string
29454- CFI_ENDPROC
29455-ENDPROC(_copy_to_user)
29456-
29457-/* Standard copy_from_user with segment limit checking */
29458-ENTRY(_copy_from_user)
29459- CFI_STARTPROC
29460- GET_THREAD_INFO(%rax)
29461- movq %rsi,%rcx
29462- addq %rdx,%rcx
29463- jc bad_from_user
29464- cmpq TI_addr_limit(%rax),%rcx
29465- ja bad_from_user
29466- ALTERNATIVE_JUMP X86_FEATURE_REP_GOOD,X86_FEATURE_ERMS, \
29467- copy_user_generic_unrolled,copy_user_generic_string, \
29468- copy_user_enhanced_fast_string
29469- CFI_ENDPROC
29470-ENDPROC(_copy_from_user)
29471-
29472- .section .fixup,"ax"
29473- /* must zero dest */
29474-ENTRY(bad_from_user)
29475-bad_from_user:
29476- CFI_STARTPROC
29477- movl %edx,%ecx
29478- xorl %eax,%eax
29479- rep
29480- stosb
29481-bad_to_user:
29482- movl %edx,%eax
29483- ret
29484- CFI_ENDPROC
29485-ENDPROC(bad_from_user)
29486- .previous
29487-
29488 /*
29489 * copy_user_generic_unrolled - memory copy with exception handling.
29490 * This version is for CPUs like P4 that don't have efficient micro
29491@@ -131,6 +61,7 @@ ENDPROC(bad_from_user)
29492 */
29493 ENTRY(copy_user_generic_unrolled)
29494 CFI_STARTPROC
29495+ ASM_PAX_OPEN_USERLAND
29496 ASM_STAC
29497 cmpl $8,%edx
29498 jb 20f /* less then 8 bytes, go to byte copy loop */
29499@@ -180,6 +111,8 @@ ENTRY(copy_user_generic_unrolled)
29500 jnz 21b
29501 23: xor %eax,%eax
29502 ASM_CLAC
29503+ ASM_PAX_CLOSE_USERLAND
29504+ pax_force_retaddr
29505 ret
29506
29507 .section .fixup,"ax"
29508@@ -235,6 +168,7 @@ ENDPROC(copy_user_generic_unrolled)
29509 */
29510 ENTRY(copy_user_generic_string)
29511 CFI_STARTPROC
29512+ ASM_PAX_OPEN_USERLAND
29513 ASM_STAC
29514 cmpl $8,%edx
29515 jb 2f /* less than 8 bytes, go to byte copy loop */
29516@@ -249,6 +183,8 @@ ENTRY(copy_user_generic_string)
29517 movsb
29518 xorl %eax,%eax
29519 ASM_CLAC
29520+ ASM_PAX_CLOSE_USERLAND
29521+ pax_force_retaddr
29522 ret
29523
29524 .section .fixup,"ax"
29525@@ -276,12 +212,15 @@ ENDPROC(copy_user_generic_string)
29526 */
29527 ENTRY(copy_user_enhanced_fast_string)
29528 CFI_STARTPROC
29529+ ASM_PAX_OPEN_USERLAND
29530 ASM_STAC
29531 movl %edx,%ecx
29532 1: rep
29533 movsb
29534 xorl %eax,%eax
29535 ASM_CLAC
29536+ ASM_PAX_CLOSE_USERLAND
29537+ pax_force_retaddr
29538 ret
29539
29540 .section .fixup,"ax"
29541diff --git a/arch/x86/lib/copy_user_nocache_64.S b/arch/x86/lib/copy_user_nocache_64.S
29542index 6a4f43c..c70fb52 100644
29543--- a/arch/x86/lib/copy_user_nocache_64.S
29544+++ b/arch/x86/lib/copy_user_nocache_64.S
29545@@ -8,6 +8,7 @@
29546
29547 #include <linux/linkage.h>
29548 #include <asm/dwarf2.h>
29549+#include <asm/alternative-asm.h>
29550
29551 #define FIX_ALIGNMENT 1
29552
29553@@ -16,6 +17,7 @@
29554 #include <asm/thread_info.h>
29555 #include <asm/asm.h>
29556 #include <asm/smap.h>
29557+#include <asm/pgtable.h>
29558
29559 .macro ALIGN_DESTINATION
29560 #ifdef FIX_ALIGNMENT
29561@@ -49,6 +51,16 @@
29562 */
29563 ENTRY(__copy_user_nocache)
29564 CFI_STARTPROC
29565+
29566+#ifdef CONFIG_PAX_MEMORY_UDEREF
29567+ mov pax_user_shadow_base,%rcx
29568+ cmp %rcx,%rsi
29569+ jae 1f
29570+ add %rcx,%rsi
29571+1:
29572+#endif
29573+
29574+ ASM_PAX_OPEN_USERLAND
29575 ASM_STAC
29576 cmpl $8,%edx
29577 jb 20f /* less then 8 bytes, go to byte copy loop */
29578@@ -98,7 +110,9 @@ ENTRY(__copy_user_nocache)
29579 jnz 21b
29580 23: xorl %eax,%eax
29581 ASM_CLAC
29582+ ASM_PAX_CLOSE_USERLAND
29583 sfence
29584+ pax_force_retaddr
29585 ret
29586
29587 .section .fixup,"ax"
29588diff --git a/arch/x86/lib/csum-copy_64.S b/arch/x86/lib/csum-copy_64.S
29589index 2419d5f..fe52d0e 100644
29590--- a/arch/x86/lib/csum-copy_64.S
29591+++ b/arch/x86/lib/csum-copy_64.S
29592@@ -9,6 +9,7 @@
29593 #include <asm/dwarf2.h>
29594 #include <asm/errno.h>
29595 #include <asm/asm.h>
29596+#include <asm/alternative-asm.h>
29597
29598 /*
29599 * Checksum copy with exception handling.
29600@@ -56,8 +57,8 @@ ENTRY(csum_partial_copy_generic)
29601 CFI_ADJUST_CFA_OFFSET 7*8
29602 movq %rbx, 2*8(%rsp)
29603 CFI_REL_OFFSET rbx, 2*8
29604- movq %r12, 3*8(%rsp)
29605- CFI_REL_OFFSET r12, 3*8
29606+ movq %r15, 3*8(%rsp)
29607+ CFI_REL_OFFSET r15, 3*8
29608 movq %r14, 4*8(%rsp)
29609 CFI_REL_OFFSET r14, 4*8
29610 movq %r13, 5*8(%rsp)
29611@@ -72,16 +73,16 @@ ENTRY(csum_partial_copy_generic)
29612 movl %edx, %ecx
29613
29614 xorl %r9d, %r9d
29615- movq %rcx, %r12
29616+ movq %rcx, %r15
29617
29618- shrq $6, %r12
29619+ shrq $6, %r15
29620 jz .Lhandle_tail /* < 64 */
29621
29622 clc
29623
29624 /* main loop. clear in 64 byte blocks */
29625 /* r9: zero, r8: temp2, rbx: temp1, rax: sum, rcx: saved length */
29626- /* r11: temp3, rdx: temp4, r12 loopcnt */
29627+ /* r11: temp3, rdx: temp4, r15 loopcnt */
29628 /* r10: temp5, rbp: temp6, r14 temp7, r13 temp8 */
29629 .p2align 4
29630 .Lloop:
29631@@ -115,7 +116,7 @@ ENTRY(csum_partial_copy_generic)
29632 adcq %r14, %rax
29633 adcq %r13, %rax
29634
29635- decl %r12d
29636+ decl %r15d
29637
29638 dest
29639 movq %rbx, (%rsi)
29640@@ -210,8 +211,8 @@ ENTRY(csum_partial_copy_generic)
29641 .Lende:
29642 movq 2*8(%rsp), %rbx
29643 CFI_RESTORE rbx
29644- movq 3*8(%rsp), %r12
29645- CFI_RESTORE r12
29646+ movq 3*8(%rsp), %r15
29647+ CFI_RESTORE r15
29648 movq 4*8(%rsp), %r14
29649 CFI_RESTORE r14
29650 movq 5*8(%rsp), %r13
29651@@ -220,6 +221,7 @@ ENTRY(csum_partial_copy_generic)
29652 CFI_RESTORE rbp
29653 addq $7*8, %rsp
29654 CFI_ADJUST_CFA_OFFSET -7*8
29655+ pax_force_retaddr
29656 ret
29657 CFI_RESTORE_STATE
29658
29659diff --git a/arch/x86/lib/csum-wrappers_64.c b/arch/x86/lib/csum-wrappers_64.c
29660index 7609e0e..b449b98 100644
29661--- a/arch/x86/lib/csum-wrappers_64.c
29662+++ b/arch/x86/lib/csum-wrappers_64.c
29663@@ -53,10 +53,12 @@ csum_partial_copy_from_user(const void __user *src, void *dst,
29664 len -= 2;
29665 }
29666 }
29667+ pax_open_userland();
29668 stac();
29669- isum = csum_partial_copy_generic((__force const void *)src,
29670+ isum = csum_partial_copy_generic((const void __force_kernel *)____m(src),
29671 dst, len, isum, errp, NULL);
29672 clac();
29673+ pax_close_userland();
29674 if (unlikely(*errp))
29675 goto out_err;
29676
29677@@ -110,10 +112,12 @@ csum_partial_copy_to_user(const void *src, void __user *dst,
29678 }
29679
29680 *errp = 0;
29681+ pax_open_userland();
29682 stac();
29683- ret = csum_partial_copy_generic(src, (void __force *)dst,
29684+ ret = csum_partial_copy_generic(src, (void __force_kernel *)____m(dst),
29685 len, isum, NULL, errp);
29686 clac();
29687+ pax_close_userland();
29688 return ret;
29689 }
29690 EXPORT_SYMBOL(csum_partial_copy_to_user);
29691diff --git a/arch/x86/lib/getuser.S b/arch/x86/lib/getuser.S
29692index a451235..1daa956 100644
29693--- a/arch/x86/lib/getuser.S
29694+++ b/arch/x86/lib/getuser.S
29695@@ -33,17 +33,40 @@
29696 #include <asm/thread_info.h>
29697 #include <asm/asm.h>
29698 #include <asm/smap.h>
29699+#include <asm/segment.h>
29700+#include <asm/pgtable.h>
29701+#include <asm/alternative-asm.h>
29702+
29703+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
29704+#define __copyuser_seg gs;
29705+#else
29706+#define __copyuser_seg
29707+#endif
29708
29709 .text
29710 ENTRY(__get_user_1)
29711 CFI_STARTPROC
29712+
29713+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
29714 GET_THREAD_INFO(%_ASM_DX)
29715 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
29716 jae bad_get_user
29717 ASM_STAC
29718-1: movzbl (%_ASM_AX),%edx
29719+
29720+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
29721+ mov pax_user_shadow_base,%_ASM_DX
29722+ cmp %_ASM_DX,%_ASM_AX
29723+ jae 1234f
29724+ add %_ASM_DX,%_ASM_AX
29725+1234:
29726+#endif
29727+
29728+#endif
29729+
29730+1: __copyuser_seg movzbl (%_ASM_AX),%edx
29731 xor %eax,%eax
29732 ASM_CLAC
29733+ pax_force_retaddr
29734 ret
29735 CFI_ENDPROC
29736 ENDPROC(__get_user_1)
29737@@ -51,14 +74,28 @@ ENDPROC(__get_user_1)
29738 ENTRY(__get_user_2)
29739 CFI_STARTPROC
29740 add $1,%_ASM_AX
29741+
29742+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
29743 jc bad_get_user
29744 GET_THREAD_INFO(%_ASM_DX)
29745 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
29746 jae bad_get_user
29747 ASM_STAC
29748-2: movzwl -1(%_ASM_AX),%edx
29749+
29750+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
29751+ mov pax_user_shadow_base,%_ASM_DX
29752+ cmp %_ASM_DX,%_ASM_AX
29753+ jae 1234f
29754+ add %_ASM_DX,%_ASM_AX
29755+1234:
29756+#endif
29757+
29758+#endif
29759+
29760+2: __copyuser_seg movzwl -1(%_ASM_AX),%edx
29761 xor %eax,%eax
29762 ASM_CLAC
29763+ pax_force_retaddr
29764 ret
29765 CFI_ENDPROC
29766 ENDPROC(__get_user_2)
29767@@ -66,14 +103,28 @@ ENDPROC(__get_user_2)
29768 ENTRY(__get_user_4)
29769 CFI_STARTPROC
29770 add $3,%_ASM_AX
29771+
29772+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
29773 jc bad_get_user
29774 GET_THREAD_INFO(%_ASM_DX)
29775 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
29776 jae bad_get_user
29777 ASM_STAC
29778-3: movl -3(%_ASM_AX),%edx
29779+
29780+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
29781+ mov pax_user_shadow_base,%_ASM_DX
29782+ cmp %_ASM_DX,%_ASM_AX
29783+ jae 1234f
29784+ add %_ASM_DX,%_ASM_AX
29785+1234:
29786+#endif
29787+
29788+#endif
29789+
29790+3: __copyuser_seg movl -3(%_ASM_AX),%edx
29791 xor %eax,%eax
29792 ASM_CLAC
29793+ pax_force_retaddr
29794 ret
29795 CFI_ENDPROC
29796 ENDPROC(__get_user_4)
29797@@ -86,10 +137,20 @@ ENTRY(__get_user_8)
29798 GET_THREAD_INFO(%_ASM_DX)
29799 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
29800 jae bad_get_user
29801+
29802+#ifdef CONFIG_PAX_MEMORY_UDEREF
29803+ mov pax_user_shadow_base,%_ASM_DX
29804+ cmp %_ASM_DX,%_ASM_AX
29805+ jae 1234f
29806+ add %_ASM_DX,%_ASM_AX
29807+1234:
29808+#endif
29809+
29810 ASM_STAC
29811 4: movq -7(%_ASM_AX),%rdx
29812 xor %eax,%eax
29813 ASM_CLAC
29814+ pax_force_retaddr
29815 ret
29816 #else
29817 add $7,%_ASM_AX
29818@@ -98,10 +159,11 @@ ENTRY(__get_user_8)
29819 cmp TI_addr_limit(%_ASM_DX),%_ASM_AX
29820 jae bad_get_user_8
29821 ASM_STAC
29822-4: movl -7(%_ASM_AX),%edx
29823-5: movl -3(%_ASM_AX),%ecx
29824+4: __copyuser_seg movl -7(%_ASM_AX),%edx
29825+5: __copyuser_seg movl -3(%_ASM_AX),%ecx
29826 xor %eax,%eax
29827 ASM_CLAC
29828+ pax_force_retaddr
29829 ret
29830 #endif
29831 CFI_ENDPROC
29832@@ -113,6 +175,7 @@ bad_get_user:
29833 xor %edx,%edx
29834 mov $(-EFAULT),%_ASM_AX
29835 ASM_CLAC
29836+ pax_force_retaddr
29837 ret
29838 CFI_ENDPROC
29839 END(bad_get_user)
29840@@ -124,6 +187,7 @@ bad_get_user_8:
29841 xor %ecx,%ecx
29842 mov $(-EFAULT),%_ASM_AX
29843 ASM_CLAC
29844+ pax_force_retaddr
29845 ret
29846 CFI_ENDPROC
29847 END(bad_get_user_8)
29848diff --git a/arch/x86/lib/insn.c b/arch/x86/lib/insn.c
29849index 54fcffe..7be149e 100644
29850--- a/arch/x86/lib/insn.c
29851+++ b/arch/x86/lib/insn.c
29852@@ -20,8 +20,10 @@
29853
29854 #ifdef __KERNEL__
29855 #include <linux/string.h>
29856+#include <asm/pgtable_types.h>
29857 #else
29858 #include <string.h>
29859+#define ktla_ktva(addr) addr
29860 #endif
29861 #include <asm/inat.h>
29862 #include <asm/insn.h>
29863@@ -53,8 +55,8 @@
29864 void insn_init(struct insn *insn, const void *kaddr, int x86_64)
29865 {
29866 memset(insn, 0, sizeof(*insn));
29867- insn->kaddr = kaddr;
29868- insn->next_byte = kaddr;
29869+ insn->kaddr = ktla_ktva(kaddr);
29870+ insn->next_byte = ktla_ktva(kaddr);
29871 insn->x86_64 = x86_64 ? 1 : 0;
29872 insn->opnd_bytes = 4;
29873 if (x86_64)
29874diff --git a/arch/x86/lib/iomap_copy_64.S b/arch/x86/lib/iomap_copy_64.S
29875index 05a95e7..326f2fa 100644
29876--- a/arch/x86/lib/iomap_copy_64.S
29877+++ b/arch/x86/lib/iomap_copy_64.S
29878@@ -17,6 +17,7 @@
29879
29880 #include <linux/linkage.h>
29881 #include <asm/dwarf2.h>
29882+#include <asm/alternative-asm.h>
29883
29884 /*
29885 * override generic version in lib/iomap_copy.c
29886@@ -25,6 +26,7 @@ ENTRY(__iowrite32_copy)
29887 CFI_STARTPROC
29888 movl %edx,%ecx
29889 rep movsd
29890+ pax_force_retaddr
29891 ret
29892 CFI_ENDPROC
29893 ENDPROC(__iowrite32_copy)
29894diff --git a/arch/x86/lib/memcpy_64.S b/arch/x86/lib/memcpy_64.S
29895index 56313a3..0db417e 100644
29896--- a/arch/x86/lib/memcpy_64.S
29897+++ b/arch/x86/lib/memcpy_64.S
29898@@ -24,7 +24,7 @@
29899 * This gets patched over the unrolled variant (below) via the
29900 * alternative instructions framework:
29901 */
29902- .section .altinstr_replacement, "ax", @progbits
29903+ .section .altinstr_replacement, "a", @progbits
29904 .Lmemcpy_c:
29905 movq %rdi, %rax
29906 movq %rdx, %rcx
29907@@ -33,6 +33,7 @@
29908 rep movsq
29909 movl %edx, %ecx
29910 rep movsb
29911+ pax_force_retaddr
29912 ret
29913 .Lmemcpy_e:
29914 .previous
29915@@ -44,11 +45,12 @@
29916 * This gets patched over the unrolled variant (below) via the
29917 * alternative instructions framework:
29918 */
29919- .section .altinstr_replacement, "ax", @progbits
29920+ .section .altinstr_replacement, "a", @progbits
29921 .Lmemcpy_c_e:
29922 movq %rdi, %rax
29923 movq %rdx, %rcx
29924 rep movsb
29925+ pax_force_retaddr
29926 ret
29927 .Lmemcpy_e_e:
29928 .previous
29929@@ -136,6 +138,7 @@ ENTRY(memcpy)
29930 movq %r9, 1*8(%rdi)
29931 movq %r10, -2*8(%rdi, %rdx)
29932 movq %r11, -1*8(%rdi, %rdx)
29933+ pax_force_retaddr
29934 retq
29935 .p2align 4
29936 .Lless_16bytes:
29937@@ -148,6 +151,7 @@ ENTRY(memcpy)
29938 movq -1*8(%rsi, %rdx), %r9
29939 movq %r8, 0*8(%rdi)
29940 movq %r9, -1*8(%rdi, %rdx)
29941+ pax_force_retaddr
29942 retq
29943 .p2align 4
29944 .Lless_8bytes:
29945@@ -161,6 +165,7 @@ ENTRY(memcpy)
29946 movl -4(%rsi, %rdx), %r8d
29947 movl %ecx, (%rdi)
29948 movl %r8d, -4(%rdi, %rdx)
29949+ pax_force_retaddr
29950 retq
29951 .p2align 4
29952 .Lless_3bytes:
29953@@ -179,6 +184,7 @@ ENTRY(memcpy)
29954 movb %cl, (%rdi)
29955
29956 .Lend:
29957+ pax_force_retaddr
29958 retq
29959 CFI_ENDPROC
29960 ENDPROC(memcpy)
29961diff --git a/arch/x86/lib/memmove_64.S b/arch/x86/lib/memmove_64.S
29962index 65268a6..dd1de11 100644
29963--- a/arch/x86/lib/memmove_64.S
29964+++ b/arch/x86/lib/memmove_64.S
29965@@ -202,14 +202,16 @@ ENTRY(memmove)
29966 movb (%rsi), %r11b
29967 movb %r11b, (%rdi)
29968 13:
29969+ pax_force_retaddr
29970 retq
29971 CFI_ENDPROC
29972
29973- .section .altinstr_replacement,"ax"
29974+ .section .altinstr_replacement,"a"
29975 .Lmemmove_begin_forward_efs:
29976 /* Forward moving data. */
29977 movq %rdx, %rcx
29978 rep movsb
29979+ pax_force_retaddr
29980 retq
29981 .Lmemmove_end_forward_efs:
29982 .previous
29983diff --git a/arch/x86/lib/memset_64.S b/arch/x86/lib/memset_64.S
29984index 2dcb380..2eb79fe 100644
29985--- a/arch/x86/lib/memset_64.S
29986+++ b/arch/x86/lib/memset_64.S
29987@@ -16,7 +16,7 @@
29988 *
29989 * rax original destination
29990 */
29991- .section .altinstr_replacement, "ax", @progbits
29992+ .section .altinstr_replacement, "a", @progbits
29993 .Lmemset_c:
29994 movq %rdi,%r9
29995 movq %rdx,%rcx
29996@@ -30,6 +30,7 @@
29997 movl %edx,%ecx
29998 rep stosb
29999 movq %r9,%rax
30000+ pax_force_retaddr
30001 ret
30002 .Lmemset_e:
30003 .previous
30004@@ -45,13 +46,14 @@
30005 *
30006 * rax original destination
30007 */
30008- .section .altinstr_replacement, "ax", @progbits
30009+ .section .altinstr_replacement, "a", @progbits
30010 .Lmemset_c_e:
30011 movq %rdi,%r9
30012 movb %sil,%al
30013 movq %rdx,%rcx
30014 rep stosb
30015 movq %r9,%rax
30016+ pax_force_retaddr
30017 ret
30018 .Lmemset_e_e:
30019 .previous
30020@@ -118,6 +120,7 @@ ENTRY(__memset)
30021
30022 .Lende:
30023 movq %r10,%rax
30024+ pax_force_retaddr
30025 ret
30026
30027 CFI_RESTORE_STATE
30028diff --git a/arch/x86/lib/mmx_32.c b/arch/x86/lib/mmx_32.c
30029index c9f2d9b..e7fd2c0 100644
30030--- a/arch/x86/lib/mmx_32.c
30031+++ b/arch/x86/lib/mmx_32.c
30032@@ -29,6 +29,7 @@ void *_mmx_memcpy(void *to, const void *from, size_t len)
30033 {
30034 void *p;
30035 int i;
30036+ unsigned long cr0;
30037
30038 if (unlikely(in_interrupt()))
30039 return __memcpy(to, from, len);
30040@@ -39,44 +40,72 @@ void *_mmx_memcpy(void *to, const void *from, size_t len)
30041 kernel_fpu_begin();
30042
30043 __asm__ __volatile__ (
30044- "1: prefetch (%0)\n" /* This set is 28 bytes */
30045- " prefetch 64(%0)\n"
30046- " prefetch 128(%0)\n"
30047- " prefetch 192(%0)\n"
30048- " prefetch 256(%0)\n"
30049+ "1: prefetch (%1)\n" /* This set is 28 bytes */
30050+ " prefetch 64(%1)\n"
30051+ " prefetch 128(%1)\n"
30052+ " prefetch 192(%1)\n"
30053+ " prefetch 256(%1)\n"
30054 "2: \n"
30055 ".section .fixup, \"ax\"\n"
30056- "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */
30057+ "3: \n"
30058+
30059+#ifdef CONFIG_PAX_KERNEXEC
30060+ " movl %%cr0, %0\n"
30061+ " movl %0, %%eax\n"
30062+ " andl $0xFFFEFFFF, %%eax\n"
30063+ " movl %%eax, %%cr0\n"
30064+#endif
30065+
30066+ " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */
30067+
30068+#ifdef CONFIG_PAX_KERNEXEC
30069+ " movl %0, %%cr0\n"
30070+#endif
30071+
30072 " jmp 2b\n"
30073 ".previous\n"
30074 _ASM_EXTABLE(1b, 3b)
30075- : : "r" (from));
30076+ : "=&r" (cr0) : "r" (from) : "ax");
30077
30078 for ( ; i > 5; i--) {
30079 __asm__ __volatile__ (
30080- "1: prefetch 320(%0)\n"
30081- "2: movq (%0), %%mm0\n"
30082- " movq 8(%0), %%mm1\n"
30083- " movq 16(%0), %%mm2\n"
30084- " movq 24(%0), %%mm3\n"
30085- " movq %%mm0, (%1)\n"
30086- " movq %%mm1, 8(%1)\n"
30087- " movq %%mm2, 16(%1)\n"
30088- " movq %%mm3, 24(%1)\n"
30089- " movq 32(%0), %%mm0\n"
30090- " movq 40(%0), %%mm1\n"
30091- " movq 48(%0), %%mm2\n"
30092- " movq 56(%0), %%mm3\n"
30093- " movq %%mm0, 32(%1)\n"
30094- " movq %%mm1, 40(%1)\n"
30095- " movq %%mm2, 48(%1)\n"
30096- " movq %%mm3, 56(%1)\n"
30097+ "1: prefetch 320(%1)\n"
30098+ "2: movq (%1), %%mm0\n"
30099+ " movq 8(%1), %%mm1\n"
30100+ " movq 16(%1), %%mm2\n"
30101+ " movq 24(%1), %%mm3\n"
30102+ " movq %%mm0, (%2)\n"
30103+ " movq %%mm1, 8(%2)\n"
30104+ " movq %%mm2, 16(%2)\n"
30105+ " movq %%mm3, 24(%2)\n"
30106+ " movq 32(%1), %%mm0\n"
30107+ " movq 40(%1), %%mm1\n"
30108+ " movq 48(%1), %%mm2\n"
30109+ " movq 56(%1), %%mm3\n"
30110+ " movq %%mm0, 32(%2)\n"
30111+ " movq %%mm1, 40(%2)\n"
30112+ " movq %%mm2, 48(%2)\n"
30113+ " movq %%mm3, 56(%2)\n"
30114 ".section .fixup, \"ax\"\n"
30115- "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */
30116+ "3:\n"
30117+
30118+#ifdef CONFIG_PAX_KERNEXEC
30119+ " movl %%cr0, %0\n"
30120+ " movl %0, %%eax\n"
30121+ " andl $0xFFFEFFFF, %%eax\n"
30122+ " movl %%eax, %%cr0\n"
30123+#endif
30124+
30125+ " movw $0x05EB, 1b\n" /* jmp on 5 bytes */
30126+
30127+#ifdef CONFIG_PAX_KERNEXEC
30128+ " movl %0, %%cr0\n"
30129+#endif
30130+
30131 " jmp 2b\n"
30132 ".previous\n"
30133 _ASM_EXTABLE(1b, 3b)
30134- : : "r" (from), "r" (to) : "memory");
30135+ : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax");
30136
30137 from += 64;
30138 to += 64;
30139@@ -158,6 +187,7 @@ static void fast_clear_page(void *page)
30140 static void fast_copy_page(void *to, void *from)
30141 {
30142 int i;
30143+ unsigned long cr0;
30144
30145 kernel_fpu_begin();
30146
30147@@ -166,42 +196,70 @@ static void fast_copy_page(void *to, void *from)
30148 * but that is for later. -AV
30149 */
30150 __asm__ __volatile__(
30151- "1: prefetch (%0)\n"
30152- " prefetch 64(%0)\n"
30153- " prefetch 128(%0)\n"
30154- " prefetch 192(%0)\n"
30155- " prefetch 256(%0)\n"
30156+ "1: prefetch (%1)\n"
30157+ " prefetch 64(%1)\n"
30158+ " prefetch 128(%1)\n"
30159+ " prefetch 192(%1)\n"
30160+ " prefetch 256(%1)\n"
30161 "2: \n"
30162 ".section .fixup, \"ax\"\n"
30163- "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */
30164+ "3: \n"
30165+
30166+#ifdef CONFIG_PAX_KERNEXEC
30167+ " movl %%cr0, %0\n"
30168+ " movl %0, %%eax\n"
30169+ " andl $0xFFFEFFFF, %%eax\n"
30170+ " movl %%eax, %%cr0\n"
30171+#endif
30172+
30173+ " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */
30174+
30175+#ifdef CONFIG_PAX_KERNEXEC
30176+ " movl %0, %%cr0\n"
30177+#endif
30178+
30179 " jmp 2b\n"
30180 ".previous\n"
30181- _ASM_EXTABLE(1b, 3b) : : "r" (from));
30182+ _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax");
30183
30184 for (i = 0; i < (4096-320)/64; i++) {
30185 __asm__ __volatile__ (
30186- "1: prefetch 320(%0)\n"
30187- "2: movq (%0), %%mm0\n"
30188- " movntq %%mm0, (%1)\n"
30189- " movq 8(%0), %%mm1\n"
30190- " movntq %%mm1, 8(%1)\n"
30191- " movq 16(%0), %%mm2\n"
30192- " movntq %%mm2, 16(%1)\n"
30193- " movq 24(%0), %%mm3\n"
30194- " movntq %%mm3, 24(%1)\n"
30195- " movq 32(%0), %%mm4\n"
30196- " movntq %%mm4, 32(%1)\n"
30197- " movq 40(%0), %%mm5\n"
30198- " movntq %%mm5, 40(%1)\n"
30199- " movq 48(%0), %%mm6\n"
30200- " movntq %%mm6, 48(%1)\n"
30201- " movq 56(%0), %%mm7\n"
30202- " movntq %%mm7, 56(%1)\n"
30203+ "1: prefetch 320(%1)\n"
30204+ "2: movq (%1), %%mm0\n"
30205+ " movntq %%mm0, (%2)\n"
30206+ " movq 8(%1), %%mm1\n"
30207+ " movntq %%mm1, 8(%2)\n"
30208+ " movq 16(%1), %%mm2\n"
30209+ " movntq %%mm2, 16(%2)\n"
30210+ " movq 24(%1), %%mm3\n"
30211+ " movntq %%mm3, 24(%2)\n"
30212+ " movq 32(%1), %%mm4\n"
30213+ " movntq %%mm4, 32(%2)\n"
30214+ " movq 40(%1), %%mm5\n"
30215+ " movntq %%mm5, 40(%2)\n"
30216+ " movq 48(%1), %%mm6\n"
30217+ " movntq %%mm6, 48(%2)\n"
30218+ " movq 56(%1), %%mm7\n"
30219+ " movntq %%mm7, 56(%2)\n"
30220 ".section .fixup, \"ax\"\n"
30221- "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */
30222+ "3:\n"
30223+
30224+#ifdef CONFIG_PAX_KERNEXEC
30225+ " movl %%cr0, %0\n"
30226+ " movl %0, %%eax\n"
30227+ " andl $0xFFFEFFFF, %%eax\n"
30228+ " movl %%eax, %%cr0\n"
30229+#endif
30230+
30231+ " movw $0x05EB, 1b\n" /* jmp on 5 bytes */
30232+
30233+#ifdef CONFIG_PAX_KERNEXEC
30234+ " movl %0, %%cr0\n"
30235+#endif
30236+
30237 " jmp 2b\n"
30238 ".previous\n"
30239- _ASM_EXTABLE(1b, 3b) : : "r" (from), "r" (to) : "memory");
30240+ _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax");
30241
30242 from += 64;
30243 to += 64;
30244@@ -280,47 +338,76 @@ static void fast_clear_page(void *page)
30245 static void fast_copy_page(void *to, void *from)
30246 {
30247 int i;
30248+ unsigned long cr0;
30249
30250 kernel_fpu_begin();
30251
30252 __asm__ __volatile__ (
30253- "1: prefetch (%0)\n"
30254- " prefetch 64(%0)\n"
30255- " prefetch 128(%0)\n"
30256- " prefetch 192(%0)\n"
30257- " prefetch 256(%0)\n"
30258+ "1: prefetch (%1)\n"
30259+ " prefetch 64(%1)\n"
30260+ " prefetch 128(%1)\n"
30261+ " prefetch 192(%1)\n"
30262+ " prefetch 256(%1)\n"
30263 "2: \n"
30264 ".section .fixup, \"ax\"\n"
30265- "3: movw $0x1AEB, 1b\n" /* jmp on 26 bytes */
30266+ "3: \n"
30267+
30268+#ifdef CONFIG_PAX_KERNEXEC
30269+ " movl %%cr0, %0\n"
30270+ " movl %0, %%eax\n"
30271+ " andl $0xFFFEFFFF, %%eax\n"
30272+ " movl %%eax, %%cr0\n"
30273+#endif
30274+
30275+ " movw $0x1AEB, 1b\n" /* jmp on 26 bytes */
30276+
30277+#ifdef CONFIG_PAX_KERNEXEC
30278+ " movl %0, %%cr0\n"
30279+#endif
30280+
30281 " jmp 2b\n"
30282 ".previous\n"
30283- _ASM_EXTABLE(1b, 3b) : : "r" (from));
30284+ _ASM_EXTABLE(1b, 3b) : "=&r" (cr0) : "r" (from) : "ax");
30285
30286 for (i = 0; i < 4096/64; i++) {
30287 __asm__ __volatile__ (
30288- "1: prefetch 320(%0)\n"
30289- "2: movq (%0), %%mm0\n"
30290- " movq 8(%0), %%mm1\n"
30291- " movq 16(%0), %%mm2\n"
30292- " movq 24(%0), %%mm3\n"
30293- " movq %%mm0, (%1)\n"
30294- " movq %%mm1, 8(%1)\n"
30295- " movq %%mm2, 16(%1)\n"
30296- " movq %%mm3, 24(%1)\n"
30297- " movq 32(%0), %%mm0\n"
30298- " movq 40(%0), %%mm1\n"
30299- " movq 48(%0), %%mm2\n"
30300- " movq 56(%0), %%mm3\n"
30301- " movq %%mm0, 32(%1)\n"
30302- " movq %%mm1, 40(%1)\n"
30303- " movq %%mm2, 48(%1)\n"
30304- " movq %%mm3, 56(%1)\n"
30305+ "1: prefetch 320(%1)\n"
30306+ "2: movq (%1), %%mm0\n"
30307+ " movq 8(%1), %%mm1\n"
30308+ " movq 16(%1), %%mm2\n"
30309+ " movq 24(%1), %%mm3\n"
30310+ " movq %%mm0, (%2)\n"
30311+ " movq %%mm1, 8(%2)\n"
30312+ " movq %%mm2, 16(%2)\n"
30313+ " movq %%mm3, 24(%2)\n"
30314+ " movq 32(%1), %%mm0\n"
30315+ " movq 40(%1), %%mm1\n"
30316+ " movq 48(%1), %%mm2\n"
30317+ " movq 56(%1), %%mm3\n"
30318+ " movq %%mm0, 32(%2)\n"
30319+ " movq %%mm1, 40(%2)\n"
30320+ " movq %%mm2, 48(%2)\n"
30321+ " movq %%mm3, 56(%2)\n"
30322 ".section .fixup, \"ax\"\n"
30323- "3: movw $0x05EB, 1b\n" /* jmp on 5 bytes */
30324+ "3:\n"
30325+
30326+#ifdef CONFIG_PAX_KERNEXEC
30327+ " movl %%cr0, %0\n"
30328+ " movl %0, %%eax\n"
30329+ " andl $0xFFFEFFFF, %%eax\n"
30330+ " movl %%eax, %%cr0\n"
30331+#endif
30332+
30333+ " movw $0x05EB, 1b\n" /* jmp on 5 bytes */
30334+
30335+#ifdef CONFIG_PAX_KERNEXEC
30336+ " movl %0, %%cr0\n"
30337+#endif
30338+
30339 " jmp 2b\n"
30340 ".previous\n"
30341 _ASM_EXTABLE(1b, 3b)
30342- : : "r" (from), "r" (to) : "memory");
30343+ : "=&r" (cr0) : "r" (from), "r" (to) : "memory", "ax");
30344
30345 from += 64;
30346 to += 64;
30347diff --git a/arch/x86/lib/msr-reg.S b/arch/x86/lib/msr-reg.S
30348index f6d13ee..d789440 100644
30349--- a/arch/x86/lib/msr-reg.S
30350+++ b/arch/x86/lib/msr-reg.S
30351@@ -3,6 +3,7 @@
30352 #include <asm/dwarf2.h>
30353 #include <asm/asm.h>
30354 #include <asm/msr.h>
30355+#include <asm/alternative-asm.h>
30356
30357 #ifdef CONFIG_X86_64
30358 /*
30359@@ -37,6 +38,7 @@ ENTRY(\op\()_safe_regs)
30360 movl %edi, 28(%r10)
30361 popq_cfi %rbp
30362 popq_cfi %rbx
30363+ pax_force_retaddr
30364 ret
30365 3:
30366 CFI_RESTORE_STATE
30367diff --git a/arch/x86/lib/putuser.S b/arch/x86/lib/putuser.S
30368index fc6ba17..d4d989d 100644
30369--- a/arch/x86/lib/putuser.S
30370+++ b/arch/x86/lib/putuser.S
30371@@ -16,7 +16,9 @@
30372 #include <asm/errno.h>
30373 #include <asm/asm.h>
30374 #include <asm/smap.h>
30375-
30376+#include <asm/segment.h>
30377+#include <asm/pgtable.h>
30378+#include <asm/alternative-asm.h>
30379
30380 /*
30381 * __put_user_X
30382@@ -30,57 +32,125 @@
30383 * as they get called from within inline assembly.
30384 */
30385
30386-#define ENTER CFI_STARTPROC ; \
30387- GET_THREAD_INFO(%_ASM_BX)
30388-#define EXIT ASM_CLAC ; \
30389- ret ; \
30390+#define ENTER CFI_STARTPROC
30391+#define EXIT ASM_CLAC ; \
30392+ pax_force_retaddr ; \
30393+ ret ; \
30394 CFI_ENDPROC
30395
30396+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
30397+#define _DEST %_ASM_CX,%_ASM_BX
30398+#else
30399+#define _DEST %_ASM_CX
30400+#endif
30401+
30402+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_MEMORY_UDEREF)
30403+#define __copyuser_seg gs;
30404+#else
30405+#define __copyuser_seg
30406+#endif
30407+
30408 .text
30409 ENTRY(__put_user_1)
30410 ENTER
30411+
30412+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
30413+ GET_THREAD_INFO(%_ASM_BX)
30414 cmp TI_addr_limit(%_ASM_BX),%_ASM_CX
30415 jae bad_put_user
30416 ASM_STAC
30417-1: movb %al,(%_ASM_CX)
30418+
30419+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
30420+ mov pax_user_shadow_base,%_ASM_BX
30421+ cmp %_ASM_BX,%_ASM_CX
30422+ jb 1234f
30423+ xor %ebx,%ebx
30424+1234:
30425+#endif
30426+
30427+#endif
30428+
30429+1: __copyuser_seg movb %al,(_DEST)
30430 xor %eax,%eax
30431 EXIT
30432 ENDPROC(__put_user_1)
30433
30434 ENTRY(__put_user_2)
30435 ENTER
30436+
30437+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
30438+ GET_THREAD_INFO(%_ASM_BX)
30439 mov TI_addr_limit(%_ASM_BX),%_ASM_BX
30440 sub $1,%_ASM_BX
30441 cmp %_ASM_BX,%_ASM_CX
30442 jae bad_put_user
30443 ASM_STAC
30444-2: movw %ax,(%_ASM_CX)
30445+
30446+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
30447+ mov pax_user_shadow_base,%_ASM_BX
30448+ cmp %_ASM_BX,%_ASM_CX
30449+ jb 1234f
30450+ xor %ebx,%ebx
30451+1234:
30452+#endif
30453+
30454+#endif
30455+
30456+2: __copyuser_seg movw %ax,(_DEST)
30457 xor %eax,%eax
30458 EXIT
30459 ENDPROC(__put_user_2)
30460
30461 ENTRY(__put_user_4)
30462 ENTER
30463+
30464+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
30465+ GET_THREAD_INFO(%_ASM_BX)
30466 mov TI_addr_limit(%_ASM_BX),%_ASM_BX
30467 sub $3,%_ASM_BX
30468 cmp %_ASM_BX,%_ASM_CX
30469 jae bad_put_user
30470 ASM_STAC
30471-3: movl %eax,(%_ASM_CX)
30472+
30473+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
30474+ mov pax_user_shadow_base,%_ASM_BX
30475+ cmp %_ASM_BX,%_ASM_CX
30476+ jb 1234f
30477+ xor %ebx,%ebx
30478+1234:
30479+#endif
30480+
30481+#endif
30482+
30483+3: __copyuser_seg movl %eax,(_DEST)
30484 xor %eax,%eax
30485 EXIT
30486 ENDPROC(__put_user_4)
30487
30488 ENTRY(__put_user_8)
30489 ENTER
30490+
30491+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_MEMORY_UDEREF)
30492+ GET_THREAD_INFO(%_ASM_BX)
30493 mov TI_addr_limit(%_ASM_BX),%_ASM_BX
30494 sub $7,%_ASM_BX
30495 cmp %_ASM_BX,%_ASM_CX
30496 jae bad_put_user
30497 ASM_STAC
30498-4: mov %_ASM_AX,(%_ASM_CX)
30499+
30500+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
30501+ mov pax_user_shadow_base,%_ASM_BX
30502+ cmp %_ASM_BX,%_ASM_CX
30503+ jb 1234f
30504+ xor %ebx,%ebx
30505+1234:
30506+#endif
30507+
30508+#endif
30509+
30510+4: __copyuser_seg mov %_ASM_AX,(_DEST)
30511 #ifdef CONFIG_X86_32
30512-5: movl %edx,4(%_ASM_CX)
30513+5: __copyuser_seg movl %edx,4(_DEST)
30514 #endif
30515 xor %eax,%eax
30516 EXIT
30517diff --git a/arch/x86/lib/rwlock.S b/arch/x86/lib/rwlock.S
30518index 1cad221..de671ee 100644
30519--- a/arch/x86/lib/rwlock.S
30520+++ b/arch/x86/lib/rwlock.S
30521@@ -16,13 +16,34 @@ ENTRY(__write_lock_failed)
30522 FRAME
30523 0: LOCK_PREFIX
30524 WRITE_LOCK_ADD($RW_LOCK_BIAS) (%__lock_ptr)
30525+
30526+#ifdef CONFIG_PAX_REFCOUNT
30527+ jno 1234f
30528+ LOCK_PREFIX
30529+ WRITE_LOCK_SUB($RW_LOCK_BIAS) (%__lock_ptr)
30530+ int $4
30531+1234:
30532+ _ASM_EXTABLE(1234b, 1234b)
30533+#endif
30534+
30535 1: rep; nop
30536 cmpl $WRITE_LOCK_CMP, (%__lock_ptr)
30537 jne 1b
30538 LOCK_PREFIX
30539 WRITE_LOCK_SUB($RW_LOCK_BIAS) (%__lock_ptr)
30540+
30541+#ifdef CONFIG_PAX_REFCOUNT
30542+ jno 1234f
30543+ LOCK_PREFIX
30544+ WRITE_LOCK_ADD($RW_LOCK_BIAS) (%__lock_ptr)
30545+ int $4
30546+1234:
30547+ _ASM_EXTABLE(1234b, 1234b)
30548+#endif
30549+
30550 jnz 0b
30551 ENDFRAME
30552+ pax_force_retaddr
30553 ret
30554 CFI_ENDPROC
30555 END(__write_lock_failed)
30556@@ -32,13 +53,34 @@ ENTRY(__read_lock_failed)
30557 FRAME
30558 0: LOCK_PREFIX
30559 READ_LOCK_SIZE(inc) (%__lock_ptr)
30560+
30561+#ifdef CONFIG_PAX_REFCOUNT
30562+ jno 1234f
30563+ LOCK_PREFIX
30564+ READ_LOCK_SIZE(dec) (%__lock_ptr)
30565+ int $4
30566+1234:
30567+ _ASM_EXTABLE(1234b, 1234b)
30568+#endif
30569+
30570 1: rep; nop
30571 READ_LOCK_SIZE(cmp) $1, (%__lock_ptr)
30572 js 1b
30573 LOCK_PREFIX
30574 READ_LOCK_SIZE(dec) (%__lock_ptr)
30575+
30576+#ifdef CONFIG_PAX_REFCOUNT
30577+ jno 1234f
30578+ LOCK_PREFIX
30579+ READ_LOCK_SIZE(inc) (%__lock_ptr)
30580+ int $4
30581+1234:
30582+ _ASM_EXTABLE(1234b, 1234b)
30583+#endif
30584+
30585 js 0b
30586 ENDFRAME
30587+ pax_force_retaddr
30588 ret
30589 CFI_ENDPROC
30590 END(__read_lock_failed)
30591diff --git a/arch/x86/lib/rwsem.S b/arch/x86/lib/rwsem.S
30592index 5dff5f0..cadebf4 100644
30593--- a/arch/x86/lib/rwsem.S
30594+++ b/arch/x86/lib/rwsem.S
30595@@ -94,6 +94,7 @@ ENTRY(call_rwsem_down_read_failed)
30596 __ASM_SIZE(pop,_cfi) %__ASM_REG(dx)
30597 CFI_RESTORE __ASM_REG(dx)
30598 restore_common_regs
30599+ pax_force_retaddr
30600 ret
30601 CFI_ENDPROC
30602 ENDPROC(call_rwsem_down_read_failed)
30603@@ -104,6 +105,7 @@ ENTRY(call_rwsem_down_write_failed)
30604 movq %rax,%rdi
30605 call rwsem_down_write_failed
30606 restore_common_regs
30607+ pax_force_retaddr
30608 ret
30609 CFI_ENDPROC
30610 ENDPROC(call_rwsem_down_write_failed)
30611@@ -117,7 +119,8 @@ ENTRY(call_rwsem_wake)
30612 movq %rax,%rdi
30613 call rwsem_wake
30614 restore_common_regs
30615-1: ret
30616+1: pax_force_retaddr
30617+ ret
30618 CFI_ENDPROC
30619 ENDPROC(call_rwsem_wake)
30620
30621@@ -131,6 +134,7 @@ ENTRY(call_rwsem_downgrade_wake)
30622 __ASM_SIZE(pop,_cfi) %__ASM_REG(dx)
30623 CFI_RESTORE __ASM_REG(dx)
30624 restore_common_regs
30625+ pax_force_retaddr
30626 ret
30627 CFI_ENDPROC
30628 ENDPROC(call_rwsem_downgrade_wake)
30629diff --git a/arch/x86/lib/thunk_64.S b/arch/x86/lib/thunk_64.S
30630index a63efd6..8149fbe 100644
30631--- a/arch/x86/lib/thunk_64.S
30632+++ b/arch/x86/lib/thunk_64.S
30633@@ -8,6 +8,7 @@
30634 #include <linux/linkage.h>
30635 #include <asm/dwarf2.h>
30636 #include <asm/calling.h>
30637+#include <asm/alternative-asm.h>
30638
30639 /* rdi: arg1 ... normal C conventions. rax is saved/restored. */
30640 .macro THUNK name, func, put_ret_addr_in_rdi=0
30641@@ -15,11 +16,11 @@
30642 \name:
30643 CFI_STARTPROC
30644
30645- /* this one pushes 9 elems, the next one would be %rIP */
30646- SAVE_ARGS
30647+ /* this one pushes 15+1 elems, the next one would be %rIP */
30648+ SAVE_ARGS 8
30649
30650 .if \put_ret_addr_in_rdi
30651- movq_cfi_restore 9*8, rdi
30652+ movq_cfi_restore RIP, rdi
30653 .endif
30654
30655 call \func
30656@@ -38,8 +39,9 @@
30657
30658 /* SAVE_ARGS below is used only for the .cfi directives it contains. */
30659 CFI_STARTPROC
30660- SAVE_ARGS
30661+ SAVE_ARGS 8
30662 restore:
30663- RESTORE_ARGS
30664+ RESTORE_ARGS 1,8
30665+ pax_force_retaddr
30666 ret
30667 CFI_ENDPROC
30668diff --git a/arch/x86/lib/usercopy_32.c b/arch/x86/lib/usercopy_32.c
30669index e2f5e21..4b22130 100644
30670--- a/arch/x86/lib/usercopy_32.c
30671+++ b/arch/x86/lib/usercopy_32.c
30672@@ -42,11 +42,13 @@ do { \
30673 int __d0; \
30674 might_fault(); \
30675 __asm__ __volatile__( \
30676+ __COPYUSER_SET_ES \
30677 ASM_STAC "\n" \
30678 "0: rep; stosl\n" \
30679 " movl %2,%0\n" \
30680 "1: rep; stosb\n" \
30681 "2: " ASM_CLAC "\n" \
30682+ __COPYUSER_RESTORE_ES \
30683 ".section .fixup,\"ax\"\n" \
30684 "3: lea 0(%2,%0,4),%0\n" \
30685 " jmp 2b\n" \
30686@@ -98,7 +100,7 @@ EXPORT_SYMBOL(__clear_user);
30687
30688 #ifdef CONFIG_X86_INTEL_USERCOPY
30689 static unsigned long
30690-__copy_user_intel(void __user *to, const void *from, unsigned long size)
30691+__generic_copy_to_user_intel(void __user *to, const void *from, unsigned long size)
30692 {
30693 int d0, d1;
30694 __asm__ __volatile__(
30695@@ -110,36 +112,36 @@ __copy_user_intel(void __user *to, const void *from, unsigned long size)
30696 " .align 2,0x90\n"
30697 "3: movl 0(%4), %%eax\n"
30698 "4: movl 4(%4), %%edx\n"
30699- "5: movl %%eax, 0(%3)\n"
30700- "6: movl %%edx, 4(%3)\n"
30701+ "5: "__copyuser_seg" movl %%eax, 0(%3)\n"
30702+ "6: "__copyuser_seg" movl %%edx, 4(%3)\n"
30703 "7: movl 8(%4), %%eax\n"
30704 "8: movl 12(%4),%%edx\n"
30705- "9: movl %%eax, 8(%3)\n"
30706- "10: movl %%edx, 12(%3)\n"
30707+ "9: "__copyuser_seg" movl %%eax, 8(%3)\n"
30708+ "10: "__copyuser_seg" movl %%edx, 12(%3)\n"
30709 "11: movl 16(%4), %%eax\n"
30710 "12: movl 20(%4), %%edx\n"
30711- "13: movl %%eax, 16(%3)\n"
30712- "14: movl %%edx, 20(%3)\n"
30713+ "13: "__copyuser_seg" movl %%eax, 16(%3)\n"
30714+ "14: "__copyuser_seg" movl %%edx, 20(%3)\n"
30715 "15: movl 24(%4), %%eax\n"
30716 "16: movl 28(%4), %%edx\n"
30717- "17: movl %%eax, 24(%3)\n"
30718- "18: movl %%edx, 28(%3)\n"
30719+ "17: "__copyuser_seg" movl %%eax, 24(%3)\n"
30720+ "18: "__copyuser_seg" movl %%edx, 28(%3)\n"
30721 "19: movl 32(%4), %%eax\n"
30722 "20: movl 36(%4), %%edx\n"
30723- "21: movl %%eax, 32(%3)\n"
30724- "22: movl %%edx, 36(%3)\n"
30725+ "21: "__copyuser_seg" movl %%eax, 32(%3)\n"
30726+ "22: "__copyuser_seg" movl %%edx, 36(%3)\n"
30727 "23: movl 40(%4), %%eax\n"
30728 "24: movl 44(%4), %%edx\n"
30729- "25: movl %%eax, 40(%3)\n"
30730- "26: movl %%edx, 44(%3)\n"
30731+ "25: "__copyuser_seg" movl %%eax, 40(%3)\n"
30732+ "26: "__copyuser_seg" movl %%edx, 44(%3)\n"
30733 "27: movl 48(%4), %%eax\n"
30734 "28: movl 52(%4), %%edx\n"
30735- "29: movl %%eax, 48(%3)\n"
30736- "30: movl %%edx, 52(%3)\n"
30737+ "29: "__copyuser_seg" movl %%eax, 48(%3)\n"
30738+ "30: "__copyuser_seg" movl %%edx, 52(%3)\n"
30739 "31: movl 56(%4), %%eax\n"
30740 "32: movl 60(%4), %%edx\n"
30741- "33: movl %%eax, 56(%3)\n"
30742- "34: movl %%edx, 60(%3)\n"
30743+ "33: "__copyuser_seg" movl %%eax, 56(%3)\n"
30744+ "34: "__copyuser_seg" movl %%edx, 60(%3)\n"
30745 " addl $-64, %0\n"
30746 " addl $64, %4\n"
30747 " addl $64, %3\n"
30748@@ -149,10 +151,116 @@ __copy_user_intel(void __user *to, const void *from, unsigned long size)
30749 " shrl $2, %0\n"
30750 " andl $3, %%eax\n"
30751 " cld\n"
30752+ __COPYUSER_SET_ES
30753 "99: rep; movsl\n"
30754 "36: movl %%eax, %0\n"
30755 "37: rep; movsb\n"
30756 "100:\n"
30757+ __COPYUSER_RESTORE_ES
30758+ ".section .fixup,\"ax\"\n"
30759+ "101: lea 0(%%eax,%0,4),%0\n"
30760+ " jmp 100b\n"
30761+ ".previous\n"
30762+ _ASM_EXTABLE(1b,100b)
30763+ _ASM_EXTABLE(2b,100b)
30764+ _ASM_EXTABLE(3b,100b)
30765+ _ASM_EXTABLE(4b,100b)
30766+ _ASM_EXTABLE(5b,100b)
30767+ _ASM_EXTABLE(6b,100b)
30768+ _ASM_EXTABLE(7b,100b)
30769+ _ASM_EXTABLE(8b,100b)
30770+ _ASM_EXTABLE(9b,100b)
30771+ _ASM_EXTABLE(10b,100b)
30772+ _ASM_EXTABLE(11b,100b)
30773+ _ASM_EXTABLE(12b,100b)
30774+ _ASM_EXTABLE(13b,100b)
30775+ _ASM_EXTABLE(14b,100b)
30776+ _ASM_EXTABLE(15b,100b)
30777+ _ASM_EXTABLE(16b,100b)
30778+ _ASM_EXTABLE(17b,100b)
30779+ _ASM_EXTABLE(18b,100b)
30780+ _ASM_EXTABLE(19b,100b)
30781+ _ASM_EXTABLE(20b,100b)
30782+ _ASM_EXTABLE(21b,100b)
30783+ _ASM_EXTABLE(22b,100b)
30784+ _ASM_EXTABLE(23b,100b)
30785+ _ASM_EXTABLE(24b,100b)
30786+ _ASM_EXTABLE(25b,100b)
30787+ _ASM_EXTABLE(26b,100b)
30788+ _ASM_EXTABLE(27b,100b)
30789+ _ASM_EXTABLE(28b,100b)
30790+ _ASM_EXTABLE(29b,100b)
30791+ _ASM_EXTABLE(30b,100b)
30792+ _ASM_EXTABLE(31b,100b)
30793+ _ASM_EXTABLE(32b,100b)
30794+ _ASM_EXTABLE(33b,100b)
30795+ _ASM_EXTABLE(34b,100b)
30796+ _ASM_EXTABLE(35b,100b)
30797+ _ASM_EXTABLE(36b,100b)
30798+ _ASM_EXTABLE(37b,100b)
30799+ _ASM_EXTABLE(99b,101b)
30800+ : "=&c"(size), "=&D" (d0), "=&S" (d1)
30801+ : "1"(to), "2"(from), "0"(size)
30802+ : "eax", "edx", "memory");
30803+ return size;
30804+}
30805+
30806+static unsigned long
30807+__generic_copy_from_user_intel(void *to, const void __user *from, unsigned long size)
30808+{
30809+ int d0, d1;
30810+ __asm__ __volatile__(
30811+ " .align 2,0x90\n"
30812+ "1: "__copyuser_seg" movl 32(%4), %%eax\n"
30813+ " cmpl $67, %0\n"
30814+ " jbe 3f\n"
30815+ "2: "__copyuser_seg" movl 64(%4), %%eax\n"
30816+ " .align 2,0x90\n"
30817+ "3: "__copyuser_seg" movl 0(%4), %%eax\n"
30818+ "4: "__copyuser_seg" movl 4(%4), %%edx\n"
30819+ "5: movl %%eax, 0(%3)\n"
30820+ "6: movl %%edx, 4(%3)\n"
30821+ "7: "__copyuser_seg" movl 8(%4), %%eax\n"
30822+ "8: "__copyuser_seg" movl 12(%4),%%edx\n"
30823+ "9: movl %%eax, 8(%3)\n"
30824+ "10: movl %%edx, 12(%3)\n"
30825+ "11: "__copyuser_seg" movl 16(%4), %%eax\n"
30826+ "12: "__copyuser_seg" movl 20(%4), %%edx\n"
30827+ "13: movl %%eax, 16(%3)\n"
30828+ "14: movl %%edx, 20(%3)\n"
30829+ "15: "__copyuser_seg" movl 24(%4), %%eax\n"
30830+ "16: "__copyuser_seg" movl 28(%4), %%edx\n"
30831+ "17: movl %%eax, 24(%3)\n"
30832+ "18: movl %%edx, 28(%3)\n"
30833+ "19: "__copyuser_seg" movl 32(%4), %%eax\n"
30834+ "20: "__copyuser_seg" movl 36(%4), %%edx\n"
30835+ "21: movl %%eax, 32(%3)\n"
30836+ "22: movl %%edx, 36(%3)\n"
30837+ "23: "__copyuser_seg" movl 40(%4), %%eax\n"
30838+ "24: "__copyuser_seg" movl 44(%4), %%edx\n"
30839+ "25: movl %%eax, 40(%3)\n"
30840+ "26: movl %%edx, 44(%3)\n"
30841+ "27: "__copyuser_seg" movl 48(%4), %%eax\n"
30842+ "28: "__copyuser_seg" movl 52(%4), %%edx\n"
30843+ "29: movl %%eax, 48(%3)\n"
30844+ "30: movl %%edx, 52(%3)\n"
30845+ "31: "__copyuser_seg" movl 56(%4), %%eax\n"
30846+ "32: "__copyuser_seg" movl 60(%4), %%edx\n"
30847+ "33: movl %%eax, 56(%3)\n"
30848+ "34: movl %%edx, 60(%3)\n"
30849+ " addl $-64, %0\n"
30850+ " addl $64, %4\n"
30851+ " addl $64, %3\n"
30852+ " cmpl $63, %0\n"
30853+ " ja 1b\n"
30854+ "35: movl %0, %%eax\n"
30855+ " shrl $2, %0\n"
30856+ " andl $3, %%eax\n"
30857+ " cld\n"
30858+ "99: rep; "__copyuser_seg" movsl\n"
30859+ "36: movl %%eax, %0\n"
30860+ "37: rep; "__copyuser_seg" movsb\n"
30861+ "100:\n"
30862 ".section .fixup,\"ax\"\n"
30863 "101: lea 0(%%eax,%0,4),%0\n"
30864 " jmp 100b\n"
30865@@ -207,41 +315,41 @@ __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size)
30866 int d0, d1;
30867 __asm__ __volatile__(
30868 " .align 2,0x90\n"
30869- "0: movl 32(%4), %%eax\n"
30870+ "0: "__copyuser_seg" movl 32(%4), %%eax\n"
30871 " cmpl $67, %0\n"
30872 " jbe 2f\n"
30873- "1: movl 64(%4), %%eax\n"
30874+ "1: "__copyuser_seg" movl 64(%4), %%eax\n"
30875 " .align 2,0x90\n"
30876- "2: movl 0(%4), %%eax\n"
30877- "21: movl 4(%4), %%edx\n"
30878+ "2: "__copyuser_seg" movl 0(%4), %%eax\n"
30879+ "21: "__copyuser_seg" movl 4(%4), %%edx\n"
30880 " movl %%eax, 0(%3)\n"
30881 " movl %%edx, 4(%3)\n"
30882- "3: movl 8(%4), %%eax\n"
30883- "31: movl 12(%4),%%edx\n"
30884+ "3: "__copyuser_seg" movl 8(%4), %%eax\n"
30885+ "31: "__copyuser_seg" movl 12(%4),%%edx\n"
30886 " movl %%eax, 8(%3)\n"
30887 " movl %%edx, 12(%3)\n"
30888- "4: movl 16(%4), %%eax\n"
30889- "41: movl 20(%4), %%edx\n"
30890+ "4: "__copyuser_seg" movl 16(%4), %%eax\n"
30891+ "41: "__copyuser_seg" movl 20(%4), %%edx\n"
30892 " movl %%eax, 16(%3)\n"
30893 " movl %%edx, 20(%3)\n"
30894- "10: movl 24(%4), %%eax\n"
30895- "51: movl 28(%4), %%edx\n"
30896+ "10: "__copyuser_seg" movl 24(%4), %%eax\n"
30897+ "51: "__copyuser_seg" movl 28(%4), %%edx\n"
30898 " movl %%eax, 24(%3)\n"
30899 " movl %%edx, 28(%3)\n"
30900- "11: movl 32(%4), %%eax\n"
30901- "61: movl 36(%4), %%edx\n"
30902+ "11: "__copyuser_seg" movl 32(%4), %%eax\n"
30903+ "61: "__copyuser_seg" movl 36(%4), %%edx\n"
30904 " movl %%eax, 32(%3)\n"
30905 " movl %%edx, 36(%3)\n"
30906- "12: movl 40(%4), %%eax\n"
30907- "71: movl 44(%4), %%edx\n"
30908+ "12: "__copyuser_seg" movl 40(%4), %%eax\n"
30909+ "71: "__copyuser_seg" movl 44(%4), %%edx\n"
30910 " movl %%eax, 40(%3)\n"
30911 " movl %%edx, 44(%3)\n"
30912- "13: movl 48(%4), %%eax\n"
30913- "81: movl 52(%4), %%edx\n"
30914+ "13: "__copyuser_seg" movl 48(%4), %%eax\n"
30915+ "81: "__copyuser_seg" movl 52(%4), %%edx\n"
30916 " movl %%eax, 48(%3)\n"
30917 " movl %%edx, 52(%3)\n"
30918- "14: movl 56(%4), %%eax\n"
30919- "91: movl 60(%4), %%edx\n"
30920+ "14: "__copyuser_seg" movl 56(%4), %%eax\n"
30921+ "91: "__copyuser_seg" movl 60(%4), %%edx\n"
30922 " movl %%eax, 56(%3)\n"
30923 " movl %%edx, 60(%3)\n"
30924 " addl $-64, %0\n"
30925@@ -253,9 +361,9 @@ __copy_user_zeroing_intel(void *to, const void __user *from, unsigned long size)
30926 " shrl $2, %0\n"
30927 " andl $3, %%eax\n"
30928 " cld\n"
30929- "6: rep; movsl\n"
30930+ "6: rep; "__copyuser_seg" movsl\n"
30931 " movl %%eax,%0\n"
30932- "7: rep; movsb\n"
30933+ "7: rep; "__copyuser_seg" movsb\n"
30934 "8:\n"
30935 ".section .fixup,\"ax\"\n"
30936 "9: lea 0(%%eax,%0,4),%0\n"
30937@@ -305,41 +413,41 @@ static unsigned long __copy_user_zeroing_intel_nocache(void *to,
30938
30939 __asm__ __volatile__(
30940 " .align 2,0x90\n"
30941- "0: movl 32(%4), %%eax\n"
30942+ "0: "__copyuser_seg" movl 32(%4), %%eax\n"
30943 " cmpl $67, %0\n"
30944 " jbe 2f\n"
30945- "1: movl 64(%4), %%eax\n"
30946+ "1: "__copyuser_seg" movl 64(%4), %%eax\n"
30947 " .align 2,0x90\n"
30948- "2: movl 0(%4), %%eax\n"
30949- "21: movl 4(%4), %%edx\n"
30950+ "2: "__copyuser_seg" movl 0(%4), %%eax\n"
30951+ "21: "__copyuser_seg" movl 4(%4), %%edx\n"
30952 " movnti %%eax, 0(%3)\n"
30953 " movnti %%edx, 4(%3)\n"
30954- "3: movl 8(%4), %%eax\n"
30955- "31: movl 12(%4),%%edx\n"
30956+ "3: "__copyuser_seg" movl 8(%4), %%eax\n"
30957+ "31: "__copyuser_seg" movl 12(%4),%%edx\n"
30958 " movnti %%eax, 8(%3)\n"
30959 " movnti %%edx, 12(%3)\n"
30960- "4: movl 16(%4), %%eax\n"
30961- "41: movl 20(%4), %%edx\n"
30962+ "4: "__copyuser_seg" movl 16(%4), %%eax\n"
30963+ "41: "__copyuser_seg" movl 20(%4), %%edx\n"
30964 " movnti %%eax, 16(%3)\n"
30965 " movnti %%edx, 20(%3)\n"
30966- "10: movl 24(%4), %%eax\n"
30967- "51: movl 28(%4), %%edx\n"
30968+ "10: "__copyuser_seg" movl 24(%4), %%eax\n"
30969+ "51: "__copyuser_seg" movl 28(%4), %%edx\n"
30970 " movnti %%eax, 24(%3)\n"
30971 " movnti %%edx, 28(%3)\n"
30972- "11: movl 32(%4), %%eax\n"
30973- "61: movl 36(%4), %%edx\n"
30974+ "11: "__copyuser_seg" movl 32(%4), %%eax\n"
30975+ "61: "__copyuser_seg" movl 36(%4), %%edx\n"
30976 " movnti %%eax, 32(%3)\n"
30977 " movnti %%edx, 36(%3)\n"
30978- "12: movl 40(%4), %%eax\n"
30979- "71: movl 44(%4), %%edx\n"
30980+ "12: "__copyuser_seg" movl 40(%4), %%eax\n"
30981+ "71: "__copyuser_seg" movl 44(%4), %%edx\n"
30982 " movnti %%eax, 40(%3)\n"
30983 " movnti %%edx, 44(%3)\n"
30984- "13: movl 48(%4), %%eax\n"
30985- "81: movl 52(%4), %%edx\n"
30986+ "13: "__copyuser_seg" movl 48(%4), %%eax\n"
30987+ "81: "__copyuser_seg" movl 52(%4), %%edx\n"
30988 " movnti %%eax, 48(%3)\n"
30989 " movnti %%edx, 52(%3)\n"
30990- "14: movl 56(%4), %%eax\n"
30991- "91: movl 60(%4), %%edx\n"
30992+ "14: "__copyuser_seg" movl 56(%4), %%eax\n"
30993+ "91: "__copyuser_seg" movl 60(%4), %%edx\n"
30994 " movnti %%eax, 56(%3)\n"
30995 " movnti %%edx, 60(%3)\n"
30996 " addl $-64, %0\n"
30997@@ -352,9 +460,9 @@ static unsigned long __copy_user_zeroing_intel_nocache(void *to,
30998 " shrl $2, %0\n"
30999 " andl $3, %%eax\n"
31000 " cld\n"
31001- "6: rep; movsl\n"
31002+ "6: rep; "__copyuser_seg" movsl\n"
31003 " movl %%eax,%0\n"
31004- "7: rep; movsb\n"
31005+ "7: rep; "__copyuser_seg" movsb\n"
31006 "8:\n"
31007 ".section .fixup,\"ax\"\n"
31008 "9: lea 0(%%eax,%0,4),%0\n"
31009@@ -399,41 +507,41 @@ static unsigned long __copy_user_intel_nocache(void *to,
31010
31011 __asm__ __volatile__(
31012 " .align 2,0x90\n"
31013- "0: movl 32(%4), %%eax\n"
31014+ "0: "__copyuser_seg" movl 32(%4), %%eax\n"
31015 " cmpl $67, %0\n"
31016 " jbe 2f\n"
31017- "1: movl 64(%4), %%eax\n"
31018+ "1: "__copyuser_seg" movl 64(%4), %%eax\n"
31019 " .align 2,0x90\n"
31020- "2: movl 0(%4), %%eax\n"
31021- "21: movl 4(%4), %%edx\n"
31022+ "2: "__copyuser_seg" movl 0(%4), %%eax\n"
31023+ "21: "__copyuser_seg" movl 4(%4), %%edx\n"
31024 " movnti %%eax, 0(%3)\n"
31025 " movnti %%edx, 4(%3)\n"
31026- "3: movl 8(%4), %%eax\n"
31027- "31: movl 12(%4),%%edx\n"
31028+ "3: "__copyuser_seg" movl 8(%4), %%eax\n"
31029+ "31: "__copyuser_seg" movl 12(%4),%%edx\n"
31030 " movnti %%eax, 8(%3)\n"
31031 " movnti %%edx, 12(%3)\n"
31032- "4: movl 16(%4), %%eax\n"
31033- "41: movl 20(%4), %%edx\n"
31034+ "4: "__copyuser_seg" movl 16(%4), %%eax\n"
31035+ "41: "__copyuser_seg" movl 20(%4), %%edx\n"
31036 " movnti %%eax, 16(%3)\n"
31037 " movnti %%edx, 20(%3)\n"
31038- "10: movl 24(%4), %%eax\n"
31039- "51: movl 28(%4), %%edx\n"
31040+ "10: "__copyuser_seg" movl 24(%4), %%eax\n"
31041+ "51: "__copyuser_seg" movl 28(%4), %%edx\n"
31042 " movnti %%eax, 24(%3)\n"
31043 " movnti %%edx, 28(%3)\n"
31044- "11: movl 32(%4), %%eax\n"
31045- "61: movl 36(%4), %%edx\n"
31046+ "11: "__copyuser_seg" movl 32(%4), %%eax\n"
31047+ "61: "__copyuser_seg" movl 36(%4), %%edx\n"
31048 " movnti %%eax, 32(%3)\n"
31049 " movnti %%edx, 36(%3)\n"
31050- "12: movl 40(%4), %%eax\n"
31051- "71: movl 44(%4), %%edx\n"
31052+ "12: "__copyuser_seg" movl 40(%4), %%eax\n"
31053+ "71: "__copyuser_seg" movl 44(%4), %%edx\n"
31054 " movnti %%eax, 40(%3)\n"
31055 " movnti %%edx, 44(%3)\n"
31056- "13: movl 48(%4), %%eax\n"
31057- "81: movl 52(%4), %%edx\n"
31058+ "13: "__copyuser_seg" movl 48(%4), %%eax\n"
31059+ "81: "__copyuser_seg" movl 52(%4), %%edx\n"
31060 " movnti %%eax, 48(%3)\n"
31061 " movnti %%edx, 52(%3)\n"
31062- "14: movl 56(%4), %%eax\n"
31063- "91: movl 60(%4), %%edx\n"
31064+ "14: "__copyuser_seg" movl 56(%4), %%eax\n"
31065+ "91: "__copyuser_seg" movl 60(%4), %%edx\n"
31066 " movnti %%eax, 56(%3)\n"
31067 " movnti %%edx, 60(%3)\n"
31068 " addl $-64, %0\n"
31069@@ -446,9 +554,9 @@ static unsigned long __copy_user_intel_nocache(void *to,
31070 " shrl $2, %0\n"
31071 " andl $3, %%eax\n"
31072 " cld\n"
31073- "6: rep; movsl\n"
31074+ "6: rep; "__copyuser_seg" movsl\n"
31075 " movl %%eax,%0\n"
31076- "7: rep; movsb\n"
31077+ "7: rep; "__copyuser_seg" movsb\n"
31078 "8:\n"
31079 ".section .fixup,\"ax\"\n"
31080 "9: lea 0(%%eax,%0,4),%0\n"
31081@@ -488,32 +596,36 @@ static unsigned long __copy_user_intel_nocache(void *to,
31082 */
31083 unsigned long __copy_user_zeroing_intel(void *to, const void __user *from,
31084 unsigned long size);
31085-unsigned long __copy_user_intel(void __user *to, const void *from,
31086+unsigned long __generic_copy_to_user_intel(void __user *to, const void *from,
31087+ unsigned long size);
31088+unsigned long __generic_copy_from_user_intel(void *to, const void __user *from,
31089 unsigned long size);
31090 unsigned long __copy_user_zeroing_intel_nocache(void *to,
31091 const void __user *from, unsigned long size);
31092 #endif /* CONFIG_X86_INTEL_USERCOPY */
31093
31094 /* Generic arbitrary sized copy. */
31095-#define __copy_user(to, from, size) \
31096+#define __copy_user(to, from, size, prefix, set, restore) \
31097 do { \
31098 int __d0, __d1, __d2; \
31099 __asm__ __volatile__( \
31100+ set \
31101 " cmp $7,%0\n" \
31102 " jbe 1f\n" \
31103 " movl %1,%0\n" \
31104 " negl %0\n" \
31105 " andl $7,%0\n" \
31106 " subl %0,%3\n" \
31107- "4: rep; movsb\n" \
31108+ "4: rep; "prefix"movsb\n" \
31109 " movl %3,%0\n" \
31110 " shrl $2,%0\n" \
31111 " andl $3,%3\n" \
31112 " .align 2,0x90\n" \
31113- "0: rep; movsl\n" \
31114+ "0: rep; "prefix"movsl\n" \
31115 " movl %3,%0\n" \
31116- "1: rep; movsb\n" \
31117+ "1: rep; "prefix"movsb\n" \
31118 "2:\n" \
31119+ restore \
31120 ".section .fixup,\"ax\"\n" \
31121 "5: addl %3,%0\n" \
31122 " jmp 2b\n" \
31123@@ -538,14 +650,14 @@ do { \
31124 " negl %0\n" \
31125 " andl $7,%0\n" \
31126 " subl %0,%3\n" \
31127- "4: rep; movsb\n" \
31128+ "4: rep; "__copyuser_seg"movsb\n" \
31129 " movl %3,%0\n" \
31130 " shrl $2,%0\n" \
31131 " andl $3,%3\n" \
31132 " .align 2,0x90\n" \
31133- "0: rep; movsl\n" \
31134+ "0: rep; "__copyuser_seg"movsl\n" \
31135 " movl %3,%0\n" \
31136- "1: rep; movsb\n" \
31137+ "1: rep; "__copyuser_seg"movsb\n" \
31138 "2:\n" \
31139 ".section .fixup,\"ax\"\n" \
31140 "5: addl %3,%0\n" \
31141@@ -572,9 +684,9 @@ unsigned long __copy_to_user_ll(void __user *to, const void *from,
31142 {
31143 stac();
31144 if (movsl_is_ok(to, from, n))
31145- __copy_user(to, from, n);
31146+ __copy_user(to, from, n, "", __COPYUSER_SET_ES, __COPYUSER_RESTORE_ES);
31147 else
31148- n = __copy_user_intel(to, from, n);
31149+ n = __generic_copy_to_user_intel(to, from, n);
31150 clac();
31151 return n;
31152 }
31153@@ -598,10 +710,9 @@ unsigned long __copy_from_user_ll_nozero(void *to, const void __user *from,
31154 {
31155 stac();
31156 if (movsl_is_ok(to, from, n))
31157- __copy_user(to, from, n);
31158+ __copy_user(to, from, n, __copyuser_seg, "", "");
31159 else
31160- n = __copy_user_intel((void __user *)to,
31161- (const void *)from, n);
31162+ n = __generic_copy_from_user_intel(to, from, n);
31163 clac();
31164 return n;
31165 }
31166@@ -632,58 +743,38 @@ unsigned long __copy_from_user_ll_nocache_nozero(void *to, const void __user *fr
31167 if (n > 64 && cpu_has_xmm2)
31168 n = __copy_user_intel_nocache(to, from, n);
31169 else
31170- __copy_user(to, from, n);
31171+ __copy_user(to, from, n, __copyuser_seg, "", "");
31172 #else
31173- __copy_user(to, from, n);
31174+ __copy_user(to, from, n, __copyuser_seg, "", "");
31175 #endif
31176 clac();
31177 return n;
31178 }
31179 EXPORT_SYMBOL(__copy_from_user_ll_nocache_nozero);
31180
31181-/**
31182- * copy_to_user: - Copy a block of data into user space.
31183- * @to: Destination address, in user space.
31184- * @from: Source address, in kernel space.
31185- * @n: Number of bytes to copy.
31186- *
31187- * Context: User context only. This function may sleep.
31188- *
31189- * Copy data from kernel space to user space.
31190- *
31191- * Returns number of bytes that could not be copied.
31192- * On success, this will be zero.
31193- */
31194-unsigned long _copy_to_user(void __user *to, const void *from, unsigned n)
31195+#ifdef CONFIG_PAX_MEMORY_UDEREF
31196+void __set_fs(mm_segment_t x)
31197 {
31198- if (access_ok(VERIFY_WRITE, to, n))
31199- n = __copy_to_user(to, from, n);
31200- return n;
31201+ switch (x.seg) {
31202+ case 0:
31203+ loadsegment(gs, 0);
31204+ break;
31205+ case TASK_SIZE_MAX:
31206+ loadsegment(gs, __USER_DS);
31207+ break;
31208+ case -1UL:
31209+ loadsegment(gs, __KERNEL_DS);
31210+ break;
31211+ default:
31212+ BUG();
31213+ }
31214 }
31215-EXPORT_SYMBOL(_copy_to_user);
31216+EXPORT_SYMBOL(__set_fs);
31217
31218-/**
31219- * copy_from_user: - Copy a block of data from user space.
31220- * @to: Destination address, in kernel space.
31221- * @from: Source address, in user space.
31222- * @n: Number of bytes to copy.
31223- *
31224- * Context: User context only. This function may sleep.
31225- *
31226- * Copy data from user space to kernel space.
31227- *
31228- * Returns number of bytes that could not be copied.
31229- * On success, this will be zero.
31230- *
31231- * If some data could not be copied, this function will pad the copied
31232- * data to the requested size using zero bytes.
31233- */
31234-unsigned long _copy_from_user(void *to, const void __user *from, unsigned n)
31235+void set_fs(mm_segment_t x)
31236 {
31237- if (access_ok(VERIFY_READ, from, n))
31238- n = __copy_from_user(to, from, n);
31239- else
31240- memset(to, 0, n);
31241- return n;
31242+ current_thread_info()->addr_limit = x;
31243+ __set_fs(x);
31244 }
31245-EXPORT_SYMBOL(_copy_from_user);
31246+EXPORT_SYMBOL(set_fs);
31247+#endif
31248diff --git a/arch/x86/lib/usercopy_64.c b/arch/x86/lib/usercopy_64.c
31249index c905e89..01ab928 100644
31250--- a/arch/x86/lib/usercopy_64.c
31251+++ b/arch/x86/lib/usercopy_64.c
31252@@ -18,6 +18,7 @@ unsigned long __clear_user(void __user *addr, unsigned long size)
31253 might_fault();
31254 /* no memory constraint because it doesn't change any memory gcc knows
31255 about */
31256+ pax_open_userland();
31257 stac();
31258 asm volatile(
31259 " testq %[size8],%[size8]\n"
31260@@ -39,9 +40,10 @@ unsigned long __clear_user(void __user *addr, unsigned long size)
31261 _ASM_EXTABLE(0b,3b)
31262 _ASM_EXTABLE(1b,2b)
31263 : [size8] "=&c"(size), [dst] "=&D" (__d0)
31264- : [size1] "r"(size & 7), "[size8]" (size / 8), "[dst]"(addr),
31265+ : [size1] "r"(size & 7), "[size8]" (size / 8), "[dst]"(____m(addr)),
31266 [zero] "r" (0UL), [eight] "r" (8UL));
31267 clac();
31268+ pax_close_userland();
31269 return size;
31270 }
31271 EXPORT_SYMBOL(__clear_user);
31272@@ -54,12 +56,11 @@ unsigned long clear_user(void __user *to, unsigned long n)
31273 }
31274 EXPORT_SYMBOL(clear_user);
31275
31276-unsigned long copy_in_user(void __user *to, const void __user *from, unsigned len)
31277+unsigned long copy_in_user(void __user *to, const void __user *from, unsigned long len)
31278 {
31279- if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len)) {
31280- return copy_user_generic((__force void *)to, (__force void *)from, len);
31281- }
31282- return len;
31283+ if (access_ok(VERIFY_WRITE, to, len) && access_ok(VERIFY_READ, from, len))
31284+ return copy_user_generic((void __force_kernel *)____m(to), (void __force_kernel *)____m(from), len);
31285+ return len;
31286 }
31287 EXPORT_SYMBOL(copy_in_user);
31288
31289@@ -69,11 +70,13 @@ EXPORT_SYMBOL(copy_in_user);
31290 * it is not necessary to optimize tail handling.
31291 */
31292 __visible unsigned long
31293-copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest)
31294+copy_user_handle_tail(char __user *to, char __user *from, unsigned long len, unsigned zerorest)
31295 {
31296 char c;
31297 unsigned zero_len;
31298
31299+ clac();
31300+ pax_close_userland();
31301 for (; len; --len, to++) {
31302 if (__get_user_nocheck(c, from++, sizeof(char)))
31303 break;
31304@@ -84,6 +87,5 @@ copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest)
31305 for (c = 0, zero_len = len; zerorest && zero_len; --zero_len)
31306 if (__put_user_nocheck(c, to++, sizeof(char)))
31307 break;
31308- clac();
31309 return len;
31310 }
31311diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile
31312index 6a19ad9..1c48f9a 100644
31313--- a/arch/x86/mm/Makefile
31314+++ b/arch/x86/mm/Makefile
31315@@ -30,3 +30,7 @@ obj-$(CONFIG_ACPI_NUMA) += srat.o
31316 obj-$(CONFIG_NUMA_EMU) += numa_emulation.o
31317
31318 obj-$(CONFIG_MEMTEST) += memtest.o
31319+
31320+quote:="
31321+obj-$(CONFIG_X86_64) += uderef_64.o
31322+CFLAGS_uderef_64.o := $(subst $(quote),,$(CONFIG_ARCH_HWEIGHT_CFLAGS))
31323diff --git a/arch/x86/mm/extable.c b/arch/x86/mm/extable.c
31324index 903ec1e..c4166b2 100644
31325--- a/arch/x86/mm/extable.c
31326+++ b/arch/x86/mm/extable.c
31327@@ -6,12 +6,24 @@
31328 static inline unsigned long
31329 ex_insn_addr(const struct exception_table_entry *x)
31330 {
31331- return (unsigned long)&x->insn + x->insn;
31332+ unsigned long reloc = 0;
31333+
31334+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
31335+ reloc = ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
31336+#endif
31337+
31338+ return (unsigned long)&x->insn + x->insn + reloc;
31339 }
31340 static inline unsigned long
31341 ex_fixup_addr(const struct exception_table_entry *x)
31342 {
31343- return (unsigned long)&x->fixup + x->fixup;
31344+ unsigned long reloc = 0;
31345+
31346+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
31347+ reloc = ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
31348+#endif
31349+
31350+ return (unsigned long)&x->fixup + x->fixup + reloc;
31351 }
31352
31353 int fixup_exception(struct pt_regs *regs)
31354@@ -20,7 +32,7 @@ int fixup_exception(struct pt_regs *regs)
31355 unsigned long new_ip;
31356
31357 #ifdef CONFIG_PNPBIOS
31358- if (unlikely(SEGMENT_IS_PNP_CODE(regs->cs))) {
31359+ if (unlikely(!v8086_mode(regs) && SEGMENT_IS_PNP_CODE(regs->cs))) {
31360 extern u32 pnp_bios_fault_eip, pnp_bios_fault_esp;
31361 extern u32 pnp_bios_is_utter_crap;
31362 pnp_bios_is_utter_crap = 1;
31363@@ -145,6 +157,13 @@ void sort_extable(struct exception_table_entry *start,
31364 i += 4;
31365 p->fixup -= i;
31366 i += 4;
31367+
31368+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
31369+ BUILD_BUG_ON(!IS_ENABLED(CONFIG_BUILDTIME_EXTABLE_SORT));
31370+ p->insn -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
31371+ p->fixup -= ____LOAD_PHYSICAL_ADDR - LOAD_PHYSICAL_ADDR;
31372+#endif
31373+
31374 }
31375 }
31376
31377diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
31378index 8e57229..31cce89 100644
31379--- a/arch/x86/mm/fault.c
31380+++ b/arch/x86/mm/fault.c
31381@@ -14,11 +14,18 @@
31382 #include <linux/hugetlb.h> /* hstate_index_to_shift */
31383 #include <linux/prefetch.h> /* prefetchw */
31384 #include <linux/context_tracking.h> /* exception_enter(), ... */
31385+#include <linux/unistd.h>
31386+#include <linux/compiler.h>
31387
31388 #include <asm/traps.h> /* dotraplinkage, ... */
31389 #include <asm/pgalloc.h> /* pgd_*(), ... */
31390 #include <asm/kmemcheck.h> /* kmemcheck_*(), ... */
31391 #include <asm/fixmap.h> /* VSYSCALL_START */
31392+#include <asm/tlbflush.h>
31393+
31394+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
31395+#include <asm/stacktrace.h>
31396+#endif
31397
31398 #define CREATE_TRACE_POINTS
31399 #include <asm/trace/exceptions.h>
31400@@ -59,7 +66,7 @@ static inline int __kprobes kprobes_fault(struct pt_regs *regs)
31401 int ret = 0;
31402
31403 /* kprobe_running() needs smp_processor_id() */
31404- if (kprobes_built_in() && !user_mode_vm(regs)) {
31405+ if (kprobes_built_in() && !user_mode(regs)) {
31406 preempt_disable();
31407 if (kprobe_running() && kprobe_fault_handler(regs, 14))
31408 ret = 1;
31409@@ -120,7 +127,10 @@ check_prefetch_opcode(struct pt_regs *regs, unsigned char *instr,
31410 return !instr_lo || (instr_lo>>1) == 1;
31411 case 0x00:
31412 /* Prefetch instruction is 0x0F0D or 0x0F18 */
31413- if (probe_kernel_address(instr, opcode))
31414+ if (user_mode(regs)) {
31415+ if (__copy_from_user_inatomic(&opcode, (unsigned char __force_user *)(instr), 1))
31416+ return 0;
31417+ } else if (probe_kernel_address(instr, opcode))
31418 return 0;
31419
31420 *prefetch = (instr_lo == 0xF) &&
31421@@ -154,7 +164,10 @@ is_prefetch(struct pt_regs *regs, unsigned long error_code, unsigned long addr)
31422 while (instr < max_instr) {
31423 unsigned char opcode;
31424
31425- if (probe_kernel_address(instr, opcode))
31426+ if (user_mode(regs)) {
31427+ if (__copy_from_user_inatomic(&opcode, (unsigned char __force_user *)(instr), 1))
31428+ break;
31429+ } else if (probe_kernel_address(instr, opcode))
31430 break;
31431
31432 instr++;
31433@@ -185,6 +198,34 @@ force_sig_info_fault(int si_signo, int si_code, unsigned long address,
31434 force_sig_info(si_signo, &info, tsk);
31435 }
31436
31437+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
31438+static bool pax_is_fetch_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address);
31439+#endif
31440+
31441+#ifdef CONFIG_PAX_EMUTRAMP
31442+static int pax_handle_fetch_fault(struct pt_regs *regs);
31443+#endif
31444+
31445+#ifdef CONFIG_PAX_PAGEEXEC
31446+static inline pmd_t * pax_get_pmd(struct mm_struct *mm, unsigned long address)
31447+{
31448+ pgd_t *pgd;
31449+ pud_t *pud;
31450+ pmd_t *pmd;
31451+
31452+ pgd = pgd_offset(mm, address);
31453+ if (!pgd_present(*pgd))
31454+ return NULL;
31455+ pud = pud_offset(pgd, address);
31456+ if (!pud_present(*pud))
31457+ return NULL;
31458+ pmd = pmd_offset(pud, address);
31459+ if (!pmd_present(*pmd))
31460+ return NULL;
31461+ return pmd;
31462+}
31463+#endif
31464+
31465 DEFINE_SPINLOCK(pgd_lock);
31466 LIST_HEAD(pgd_list);
31467
31468@@ -235,10 +276,27 @@ void vmalloc_sync_all(void)
31469 for (address = VMALLOC_START & PMD_MASK;
31470 address >= TASK_SIZE && address < FIXADDR_TOP;
31471 address += PMD_SIZE) {
31472+
31473+#ifdef CONFIG_PAX_PER_CPU_PGD
31474+ unsigned long cpu;
31475+#else
31476 struct page *page;
31477+#endif
31478
31479 spin_lock(&pgd_lock);
31480+
31481+#ifdef CONFIG_PAX_PER_CPU_PGD
31482+ for (cpu = 0; cpu < nr_cpu_ids; ++cpu) {
31483+ pgd_t *pgd = get_cpu_pgd(cpu, user);
31484+ pmd_t *ret;
31485+
31486+ ret = vmalloc_sync_one(pgd, address);
31487+ if (!ret)
31488+ break;
31489+ pgd = get_cpu_pgd(cpu, kernel);
31490+#else
31491 list_for_each_entry(page, &pgd_list, lru) {
31492+ pgd_t *pgd;
31493 spinlock_t *pgt_lock;
31494 pmd_t *ret;
31495
31496@@ -246,8 +304,14 @@ void vmalloc_sync_all(void)
31497 pgt_lock = &pgd_page_get_mm(page)->page_table_lock;
31498
31499 spin_lock(pgt_lock);
31500- ret = vmalloc_sync_one(page_address(page), address);
31501+ pgd = page_address(page);
31502+#endif
31503+
31504+ ret = vmalloc_sync_one(pgd, address);
31505+
31506+#ifndef CONFIG_PAX_PER_CPU_PGD
31507 spin_unlock(pgt_lock);
31508+#endif
31509
31510 if (!ret)
31511 break;
31512@@ -281,6 +345,12 @@ static noinline __kprobes int vmalloc_fault(unsigned long address)
31513 * an interrupt in the middle of a task switch..
31514 */
31515 pgd_paddr = read_cr3();
31516+
31517+#ifdef CONFIG_PAX_PER_CPU_PGD
31518+ BUG_ON(__pa(get_cpu_pgd(smp_processor_id(), kernel)) != (pgd_paddr & __PHYSICAL_MASK));
31519+ vmalloc_sync_one(__va(pgd_paddr + PAGE_SIZE), address);
31520+#endif
31521+
31522 pmd_k = vmalloc_sync_one(__va(pgd_paddr), address);
31523 if (!pmd_k)
31524 return -1;
31525@@ -376,11 +446,25 @@ static noinline __kprobes int vmalloc_fault(unsigned long address)
31526 * happen within a race in page table update. In the later
31527 * case just flush:
31528 */
31529- pgd = pgd_offset(current->active_mm, address);
31530+
31531 pgd_ref = pgd_offset_k(address);
31532 if (pgd_none(*pgd_ref))
31533 return -1;
31534
31535+#ifdef CONFIG_PAX_PER_CPU_PGD
31536+ BUG_ON(__pa(get_cpu_pgd(smp_processor_id(), kernel)) != (read_cr3() & __PHYSICAL_MASK));
31537+ pgd = pgd_offset_cpu(smp_processor_id(), user, address);
31538+ if (pgd_none(*pgd)) {
31539+ set_pgd(pgd, *pgd_ref);
31540+ arch_flush_lazy_mmu_mode();
31541+ } else {
31542+ BUG_ON(pgd_page_vaddr(*pgd) != pgd_page_vaddr(*pgd_ref));
31543+ }
31544+ pgd = pgd_offset_cpu(smp_processor_id(), kernel, address);
31545+#else
31546+ pgd = pgd_offset(current->active_mm, address);
31547+#endif
31548+
31549 if (pgd_none(*pgd)) {
31550 set_pgd(pgd, *pgd_ref);
31551 arch_flush_lazy_mmu_mode();
31552@@ -546,7 +630,7 @@ static int is_errata93(struct pt_regs *regs, unsigned long address)
31553 static int is_errata100(struct pt_regs *regs, unsigned long address)
31554 {
31555 #ifdef CONFIG_X86_64
31556- if ((regs->cs == __USER32_CS || (regs->cs & (1<<2))) && (address >> 32))
31557+ if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)) && (address >> 32))
31558 return 1;
31559 #endif
31560 return 0;
31561@@ -573,7 +657,7 @@ static int is_f00f_bug(struct pt_regs *regs, unsigned long address)
31562 }
31563
31564 static const char nx_warning[] = KERN_CRIT
31565-"kernel tried to execute NX-protected page - exploit attempt? (uid: %d)\n";
31566+"kernel tried to execute NX-protected page - exploit attempt? (uid: %d, task: %s, pid: %d)\n";
31567
31568 static void
31569 show_fault_oops(struct pt_regs *regs, unsigned long error_code,
31570@@ -582,7 +666,7 @@ show_fault_oops(struct pt_regs *regs, unsigned long error_code,
31571 if (!oops_may_print())
31572 return;
31573
31574- if (error_code & PF_INSTR) {
31575+ if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR)) {
31576 unsigned int level;
31577 pgd_t *pgd;
31578 pte_t *pte;
31579@@ -593,9 +677,21 @@ show_fault_oops(struct pt_regs *regs, unsigned long error_code,
31580 pte = lookup_address_in_pgd(pgd, address, &level);
31581
31582 if (pte && pte_present(*pte) && !pte_exec(*pte))
31583- printk(nx_warning, from_kuid(&init_user_ns, current_uid()));
31584+ printk(nx_warning, from_kuid_munged(&init_user_ns, current_uid()), current->comm, task_pid_nr(current));
31585 }
31586
31587+#ifdef CONFIG_PAX_KERNEXEC
31588+ if (init_mm.start_code <= address && address < init_mm.end_code) {
31589+ if (current->signal->curr_ip)
31590+ printk(KERN_ERR "PAX: From %pI4: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n",
31591+ &current->signal->curr_ip, current->comm, task_pid_nr(current),
31592+ from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()));
31593+ else
31594+ printk(KERN_ERR "PAX: %s:%d, uid/euid: %u/%u, attempted to modify kernel code\n", current->comm, task_pid_nr(current),
31595+ from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()));
31596+ }
31597+#endif
31598+
31599 printk(KERN_ALERT "BUG: unable to handle kernel ");
31600 if (address < PAGE_SIZE)
31601 printk(KERN_CONT "NULL pointer dereference");
31602@@ -776,6 +872,22 @@ __bad_area_nosemaphore(struct pt_regs *regs, unsigned long error_code,
31603 return;
31604 }
31605 #endif
31606+
31607+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
31608+ if (pax_is_fetch_fault(regs, error_code, address)) {
31609+
31610+#ifdef CONFIG_PAX_EMUTRAMP
31611+ switch (pax_handle_fetch_fault(regs)) {
31612+ case 2:
31613+ return;
31614+ }
31615+#endif
31616+
31617+ pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp);
31618+ do_group_exit(SIGKILL);
31619+ }
31620+#endif
31621+
31622 /* Kernel addresses are always protection faults: */
31623 if (address >= TASK_SIZE)
31624 error_code |= PF_PROT;
31625@@ -861,7 +973,7 @@ do_sigbus(struct pt_regs *regs, unsigned long error_code, unsigned long address,
31626 if (fault & (VM_FAULT_HWPOISON|VM_FAULT_HWPOISON_LARGE)) {
31627 printk(KERN_ERR
31628 "MCE: Killing %s:%d due to hardware memory corruption fault at %lx\n",
31629- tsk->comm, tsk->pid, address);
31630+ tsk->comm, task_pid_nr(tsk), address);
31631 code = BUS_MCEERR_AR;
31632 }
31633 #endif
31634@@ -915,6 +1027,99 @@ static int spurious_fault_check(unsigned long error_code, pte_t *pte)
31635 return 1;
31636 }
31637
31638+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC)
31639+static int pax_handle_pageexec_fault(struct pt_regs *regs, struct mm_struct *mm, unsigned long address, unsigned long error_code)
31640+{
31641+ pte_t *pte;
31642+ pmd_t *pmd;
31643+ spinlock_t *ptl;
31644+ unsigned char pte_mask;
31645+
31646+ if ((__supported_pte_mask & _PAGE_NX) || (error_code & (PF_PROT|PF_USER)) != (PF_PROT|PF_USER) || v8086_mode(regs) ||
31647+ !(mm->pax_flags & MF_PAX_PAGEEXEC))
31648+ return 0;
31649+
31650+ /* PaX: it's our fault, let's handle it if we can */
31651+
31652+ /* PaX: take a look at read faults before acquiring any locks */
31653+ if (unlikely(!(error_code & PF_WRITE) && (regs->ip == address))) {
31654+ /* instruction fetch attempt from a protected page in user mode */
31655+ up_read(&mm->mmap_sem);
31656+
31657+#ifdef CONFIG_PAX_EMUTRAMP
31658+ switch (pax_handle_fetch_fault(regs)) {
31659+ case 2:
31660+ return 1;
31661+ }
31662+#endif
31663+
31664+ pax_report_fault(regs, (void *)regs->ip, (void *)regs->sp);
31665+ do_group_exit(SIGKILL);
31666+ }
31667+
31668+ pmd = pax_get_pmd(mm, address);
31669+ if (unlikely(!pmd))
31670+ return 0;
31671+
31672+ pte = pte_offset_map_lock(mm, pmd, address, &ptl);
31673+ if (unlikely(!(pte_val(*pte) & _PAGE_PRESENT) || pte_user(*pte))) {
31674+ pte_unmap_unlock(pte, ptl);
31675+ return 0;
31676+ }
31677+
31678+ if (unlikely((error_code & PF_WRITE) && !pte_write(*pte))) {
31679+ /* write attempt to a protected page in user mode */
31680+ pte_unmap_unlock(pte, ptl);
31681+ return 0;
31682+ }
31683+
31684+#ifdef CONFIG_SMP
31685+ if (likely(address > get_limit(regs->cs) && cpu_isset(smp_processor_id(), mm->context.cpu_user_cs_mask)))
31686+#else
31687+ if (likely(address > get_limit(regs->cs)))
31688+#endif
31689+ {
31690+ set_pte(pte, pte_mkread(*pte));
31691+ __flush_tlb_one(address);
31692+ pte_unmap_unlock(pte, ptl);
31693+ up_read(&mm->mmap_sem);
31694+ return 1;
31695+ }
31696+
31697+ pte_mask = _PAGE_ACCESSED | _PAGE_USER | ((error_code & PF_WRITE) << (_PAGE_BIT_DIRTY-1));
31698+
31699+ /*
31700+ * PaX: fill DTLB with user rights and retry
31701+ */
31702+ __asm__ __volatile__ (
31703+ "orb %2,(%1)\n"
31704+#if defined(CONFIG_M586) || defined(CONFIG_M586TSC)
31705+/*
31706+ * PaX: let this uncommented 'invlpg' remind us on the behaviour of Intel's
31707+ * (and AMD's) TLBs. namely, they do not cache PTEs that would raise *any*
31708+ * page fault when examined during a TLB load attempt. this is true not only
31709+ * for PTEs holding a non-present entry but also present entries that will
31710+ * raise a page fault (such as those set up by PaX, or the copy-on-write
31711+ * mechanism). in effect it means that we do *not* need to flush the TLBs
31712+ * for our target pages since their PTEs are simply not in the TLBs at all.
31713+
31714+ * the best thing in omitting it is that we gain around 15-20% speed in the
31715+ * fast path of the page fault handler and can get rid of tracing since we
31716+ * can no longer flush unintended entries.
31717+ */
31718+ "invlpg (%0)\n"
31719+#endif
31720+ __copyuser_seg"testb $0,(%0)\n"
31721+ "xorb %3,(%1)\n"
31722+ :
31723+ : "r" (address), "r" (pte), "q" (pte_mask), "i" (_PAGE_USER)
31724+ : "memory", "cc");
31725+ pte_unmap_unlock(pte, ptl);
31726+ up_read(&mm->mmap_sem);
31727+ return 1;
31728+}
31729+#endif
31730+
31731 /*
31732 * Handle a spurious fault caused by a stale TLB entry.
31733 *
31734@@ -981,6 +1186,9 @@ int show_unhandled_signals = 1;
31735 static inline int
31736 access_error(unsigned long error_code, struct vm_area_struct *vma)
31737 {
31738+ if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR) && !(vma->vm_flags & VM_EXEC))
31739+ return 1;
31740+
31741 if (error_code & PF_WRITE) {
31742 /* write, present and write, not present: */
31743 if (unlikely(!(vma->vm_flags & VM_WRITE)))
31744@@ -1015,7 +1223,7 @@ static inline bool smap_violation(int error_code, struct pt_regs *regs)
31745 if (error_code & PF_USER)
31746 return false;
31747
31748- if (!user_mode_vm(regs) && (regs->flags & X86_EFLAGS_AC))
31749+ if (!user_mode(regs) && (regs->flags & X86_EFLAGS_AC))
31750 return false;
31751
31752 return true;
31753@@ -1043,6 +1251,22 @@ __do_page_fault(struct pt_regs *regs, unsigned long error_code,
31754 tsk = current;
31755 mm = tsk->mm;
31756
31757+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
31758+ if (!user_mode(regs) && address < 2 * pax_user_shadow_base) {
31759+ if (!search_exception_tables(regs->ip)) {
31760+ printk(KERN_ERR "PAX: please report this to pageexec@freemail.hu\n");
31761+ bad_area_nosemaphore(regs, error_code, address);
31762+ return;
31763+ }
31764+ if (address < pax_user_shadow_base) {
31765+ printk(KERN_ERR "PAX: please report this to pageexec@freemail.hu\n");
31766+ printk(KERN_ERR "PAX: faulting IP: %pS\n", (void *)regs->ip);
31767+ show_trace_log_lvl(NULL, NULL, (void *)regs->sp, regs->bp, KERN_ERR);
31768+ } else
31769+ address -= pax_user_shadow_base;
31770+ }
31771+#endif
31772+
31773 /*
31774 * Detect and handle instructions that would cause a page fault for
31775 * both a tracked kernel page and a userspace page.
31776@@ -1120,7 +1344,7 @@ __do_page_fault(struct pt_regs *regs, unsigned long error_code,
31777 * User-mode registers count as a user access even for any
31778 * potential system fault or CPU buglet:
31779 */
31780- if (user_mode_vm(regs)) {
31781+ if (user_mode(regs)) {
31782 local_irq_enable();
31783 error_code |= PF_USER;
31784 flags |= FAULT_FLAG_USER;
31785@@ -1167,6 +1391,11 @@ retry:
31786 might_sleep();
31787 }
31788
31789+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_PAGEEXEC)
31790+ if (pax_handle_pageexec_fault(regs, mm, address, error_code))
31791+ return;
31792+#endif
31793+
31794 vma = find_vma(mm, address);
31795 if (unlikely(!vma)) {
31796 bad_area(regs, error_code, address);
31797@@ -1178,18 +1407,24 @@ retry:
31798 bad_area(regs, error_code, address);
31799 return;
31800 }
31801- if (error_code & PF_USER) {
31802- /*
31803- * Accessing the stack below %sp is always a bug.
31804- * The large cushion allows instructions like enter
31805- * and pusha to work. ("enter $65535, $31" pushes
31806- * 32 pointers and then decrements %sp by 65535.)
31807- */
31808- if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < regs->sp)) {
31809- bad_area(regs, error_code, address);
31810- return;
31811- }
31812+ /*
31813+ * Accessing the stack below %sp is always a bug.
31814+ * The large cushion allows instructions like enter
31815+ * and pusha to work. ("enter $65535, $31" pushes
31816+ * 32 pointers and then decrements %sp by 65535.)
31817+ */
31818+ if (unlikely(address + 65536 + 32 * sizeof(unsigned long) < task_pt_regs(tsk)->sp)) {
31819+ bad_area(regs, error_code, address);
31820+ return;
31821 }
31822+
31823+#ifdef CONFIG_PAX_SEGMEXEC
31824+ if (unlikely((mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_end - SEGMEXEC_TASK_SIZE - 1 < address - SEGMEXEC_TASK_SIZE - 1)) {
31825+ bad_area(regs, error_code, address);
31826+ return;
31827+ }
31828+#endif
31829+
31830 if (unlikely(expand_stack(vma, address))) {
31831 bad_area(regs, error_code, address);
31832 return;
31833@@ -1301,3 +1536,292 @@ trace_do_page_fault(struct pt_regs *regs, unsigned long error_code)
31834 exception_exit(prev_state);
31835 }
31836 #endif /* CONFIG_TRACING */
31837+
31838+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
31839+static bool pax_is_fetch_fault(struct pt_regs *regs, unsigned long error_code, unsigned long address)
31840+{
31841+ struct mm_struct *mm = current->mm;
31842+ unsigned long ip = regs->ip;
31843+
31844+ if (v8086_mode(regs))
31845+ ip = ((regs->cs & 0xffff) << 4) + (ip & 0xffff);
31846+
31847+#ifdef CONFIG_PAX_PAGEEXEC
31848+ if (mm->pax_flags & MF_PAX_PAGEEXEC) {
31849+ if ((__supported_pte_mask & _PAGE_NX) && (error_code & PF_INSTR))
31850+ return true;
31851+ if (!(error_code & (PF_PROT | PF_WRITE)) && ip == address)
31852+ return true;
31853+ return false;
31854+ }
31855+#endif
31856+
31857+#ifdef CONFIG_PAX_SEGMEXEC
31858+ if (mm->pax_flags & MF_PAX_SEGMEXEC) {
31859+ if (!(error_code & (PF_PROT | PF_WRITE)) && (ip + SEGMEXEC_TASK_SIZE == address))
31860+ return true;
31861+ return false;
31862+ }
31863+#endif
31864+
31865+ return false;
31866+}
31867+#endif
31868+
31869+#ifdef CONFIG_PAX_EMUTRAMP
31870+static int pax_handle_fetch_fault_32(struct pt_regs *regs)
31871+{
31872+ int err;
31873+
31874+ do { /* PaX: libffi trampoline emulation */
31875+ unsigned char mov, jmp;
31876+ unsigned int addr1, addr2;
31877+
31878+#ifdef CONFIG_X86_64
31879+ if ((regs->ip + 9) >> 32)
31880+ break;
31881+#endif
31882+
31883+ err = get_user(mov, (unsigned char __user *)regs->ip);
31884+ err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1));
31885+ err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5));
31886+ err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6));
31887+
31888+ if (err)
31889+ break;
31890+
31891+ if (mov == 0xB8 && jmp == 0xE9) {
31892+ regs->ax = addr1;
31893+ regs->ip = (unsigned int)(regs->ip + addr2 + 10);
31894+ return 2;
31895+ }
31896+ } while (0);
31897+
31898+ do { /* PaX: gcc trampoline emulation #1 */
31899+ unsigned char mov1, mov2;
31900+ unsigned short jmp;
31901+ unsigned int addr1, addr2;
31902+
31903+#ifdef CONFIG_X86_64
31904+ if ((regs->ip + 11) >> 32)
31905+ break;
31906+#endif
31907+
31908+ err = get_user(mov1, (unsigned char __user *)regs->ip);
31909+ err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1));
31910+ err |= get_user(mov2, (unsigned char __user *)(regs->ip + 5));
31911+ err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6));
31912+ err |= get_user(jmp, (unsigned short __user *)(regs->ip + 10));
31913+
31914+ if (err)
31915+ break;
31916+
31917+ if (mov1 == 0xB9 && mov2 == 0xB8 && jmp == 0xE0FF) {
31918+ regs->cx = addr1;
31919+ regs->ax = addr2;
31920+ regs->ip = addr2;
31921+ return 2;
31922+ }
31923+ } while (0);
31924+
31925+ do { /* PaX: gcc trampoline emulation #2 */
31926+ unsigned char mov, jmp;
31927+ unsigned int addr1, addr2;
31928+
31929+#ifdef CONFIG_X86_64
31930+ if ((regs->ip + 9) >> 32)
31931+ break;
31932+#endif
31933+
31934+ err = get_user(mov, (unsigned char __user *)regs->ip);
31935+ err |= get_user(addr1, (unsigned int __user *)(regs->ip + 1));
31936+ err |= get_user(jmp, (unsigned char __user *)(regs->ip + 5));
31937+ err |= get_user(addr2, (unsigned int __user *)(regs->ip + 6));
31938+
31939+ if (err)
31940+ break;
31941+
31942+ if (mov == 0xB9 && jmp == 0xE9) {
31943+ regs->cx = addr1;
31944+ regs->ip = (unsigned int)(regs->ip + addr2 + 10);
31945+ return 2;
31946+ }
31947+ } while (0);
31948+
31949+ return 1; /* PaX in action */
31950+}
31951+
31952+#ifdef CONFIG_X86_64
31953+static int pax_handle_fetch_fault_64(struct pt_regs *regs)
31954+{
31955+ int err;
31956+
31957+ do { /* PaX: libffi trampoline emulation */
31958+ unsigned short mov1, mov2, jmp1;
31959+ unsigned char stcclc, jmp2;
31960+ unsigned long addr1, addr2;
31961+
31962+ err = get_user(mov1, (unsigned short __user *)regs->ip);
31963+ err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2));
31964+ err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10));
31965+ err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12));
31966+ err |= get_user(stcclc, (unsigned char __user *)(regs->ip + 20));
31967+ err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 21));
31968+ err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 23));
31969+
31970+ if (err)
31971+ break;
31972+
31973+ if (mov1 == 0xBB49 && mov2 == 0xBA49 && (stcclc == 0xF8 || stcclc == 0xF9) && jmp1 == 0xFF49 && jmp2 == 0xE3) {
31974+ regs->r11 = addr1;
31975+ regs->r10 = addr2;
31976+ if (stcclc == 0xF8)
31977+ regs->flags &= ~X86_EFLAGS_CF;
31978+ else
31979+ regs->flags |= X86_EFLAGS_CF;
31980+ regs->ip = addr1;
31981+ return 2;
31982+ }
31983+ } while (0);
31984+
31985+ do { /* PaX: gcc trampoline emulation #1 */
31986+ unsigned short mov1, mov2, jmp1;
31987+ unsigned char jmp2;
31988+ unsigned int addr1;
31989+ unsigned long addr2;
31990+
31991+ err = get_user(mov1, (unsigned short __user *)regs->ip);
31992+ err |= get_user(addr1, (unsigned int __user *)(regs->ip + 2));
31993+ err |= get_user(mov2, (unsigned short __user *)(regs->ip + 6));
31994+ err |= get_user(addr2, (unsigned long __user *)(regs->ip + 8));
31995+ err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 16));
31996+ err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 18));
31997+
31998+ if (err)
31999+ break;
32000+
32001+ if (mov1 == 0xBB41 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) {
32002+ regs->r11 = addr1;
32003+ regs->r10 = addr2;
32004+ regs->ip = addr1;
32005+ return 2;
32006+ }
32007+ } while (0);
32008+
32009+ do { /* PaX: gcc trampoline emulation #2 */
32010+ unsigned short mov1, mov2, jmp1;
32011+ unsigned char jmp2;
32012+ unsigned long addr1, addr2;
32013+
32014+ err = get_user(mov1, (unsigned short __user *)regs->ip);
32015+ err |= get_user(addr1, (unsigned long __user *)(regs->ip + 2));
32016+ err |= get_user(mov2, (unsigned short __user *)(regs->ip + 10));
32017+ err |= get_user(addr2, (unsigned long __user *)(regs->ip + 12));
32018+ err |= get_user(jmp1, (unsigned short __user *)(regs->ip + 20));
32019+ err |= get_user(jmp2, (unsigned char __user *)(regs->ip + 22));
32020+
32021+ if (err)
32022+ break;
32023+
32024+ if (mov1 == 0xBB49 && mov2 == 0xBA49 && jmp1 == 0xFF49 && jmp2 == 0xE3) {
32025+ regs->r11 = addr1;
32026+ regs->r10 = addr2;
32027+ regs->ip = addr1;
32028+ return 2;
32029+ }
32030+ } while (0);
32031+
32032+ return 1; /* PaX in action */
32033+}
32034+#endif
32035+
32036+/*
32037+ * PaX: decide what to do with offenders (regs->ip = fault address)
32038+ *
32039+ * returns 1 when task should be killed
32040+ * 2 when gcc trampoline was detected
32041+ */
32042+static int pax_handle_fetch_fault(struct pt_regs *regs)
32043+{
32044+ if (v8086_mode(regs))
32045+ return 1;
32046+
32047+ if (!(current->mm->pax_flags & MF_PAX_EMUTRAMP))
32048+ return 1;
32049+
32050+#ifdef CONFIG_X86_32
32051+ return pax_handle_fetch_fault_32(regs);
32052+#else
32053+ if (regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT))
32054+ return pax_handle_fetch_fault_32(regs);
32055+ else
32056+ return pax_handle_fetch_fault_64(regs);
32057+#endif
32058+}
32059+#endif
32060+
32061+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
32062+void pax_report_insns(struct pt_regs *regs, void *pc, void *sp)
32063+{
32064+ long i;
32065+
32066+ printk(KERN_ERR "PAX: bytes at PC: ");
32067+ for (i = 0; i < 20; i++) {
32068+ unsigned char c;
32069+ if (get_user(c, (unsigned char __force_user *)pc+i))
32070+ printk(KERN_CONT "?? ");
32071+ else
32072+ printk(KERN_CONT "%02x ", c);
32073+ }
32074+ printk("\n");
32075+
32076+ printk(KERN_ERR "PAX: bytes at SP-%lu: ", (unsigned long)sizeof(long));
32077+ for (i = -1; i < 80 / (long)sizeof(long); i++) {
32078+ unsigned long c;
32079+ if (get_user(c, (unsigned long __force_user *)sp+i)) {
32080+#ifdef CONFIG_X86_32
32081+ printk(KERN_CONT "???????? ");
32082+#else
32083+ if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT)))
32084+ printk(KERN_CONT "???????? ???????? ");
32085+ else
32086+ printk(KERN_CONT "???????????????? ");
32087+#endif
32088+ } else {
32089+#ifdef CONFIG_X86_64
32090+ if ((regs->cs == __USER32_CS || (regs->cs & SEGMENT_LDT))) {
32091+ printk(KERN_CONT "%08x ", (unsigned int)c);
32092+ printk(KERN_CONT "%08x ", (unsigned int)(c >> 32));
32093+ } else
32094+#endif
32095+ printk(KERN_CONT "%0*lx ", 2 * (int)sizeof(long), c);
32096+ }
32097+ }
32098+ printk("\n");
32099+}
32100+#endif
32101+
32102+/**
32103+ * probe_kernel_write(): safely attempt to write to a location
32104+ * @dst: address to write to
32105+ * @src: pointer to the data that shall be written
32106+ * @size: size of the data chunk
32107+ *
32108+ * Safely write to address @dst from the buffer at @src. If a kernel fault
32109+ * happens, handle that and return -EFAULT.
32110+ */
32111+long notrace probe_kernel_write(void *dst, const void *src, size_t size)
32112+{
32113+ long ret;
32114+ mm_segment_t old_fs = get_fs();
32115+
32116+ set_fs(KERNEL_DS);
32117+ pagefault_disable();
32118+ pax_open_kernel();
32119+ ret = __copy_to_user_inatomic((void __force_user *)dst, src, size);
32120+ pax_close_kernel();
32121+ pagefault_enable();
32122+ set_fs(old_fs);
32123+
32124+ return ret ? -EFAULT : 0;
32125+}
32126diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
32127index 207d9aef..69030980 100644
32128--- a/arch/x86/mm/gup.c
32129+++ b/arch/x86/mm/gup.c
32130@@ -268,7 +268,7 @@ int __get_user_pages_fast(unsigned long start, int nr_pages, int write,
32131 addr = start;
32132 len = (unsigned long) nr_pages << PAGE_SHIFT;
32133 end = start + len;
32134- if (unlikely(!access_ok(write ? VERIFY_WRITE : VERIFY_READ,
32135+ if (unlikely(!access_ok_noprefault(write ? VERIFY_WRITE : VERIFY_READ,
32136 (void __user *)start, len)))
32137 return 0;
32138
32139@@ -344,6 +344,10 @@ int get_user_pages_fast(unsigned long start, int nr_pages, int write,
32140 goto slow_irqon;
32141 #endif
32142
32143+ if (unlikely(!access_ok_noprefault(write ? VERIFY_WRITE : VERIFY_READ,
32144+ (void __user *)start, len)))
32145+ return 0;
32146+
32147 /*
32148 * XXX: batch / limit 'nr', to avoid large irq off latency
32149 * needs some instrumenting to determine the common sizes used by
32150diff --git a/arch/x86/mm/highmem_32.c b/arch/x86/mm/highmem_32.c
32151index 4500142..53a363c 100644
32152--- a/arch/x86/mm/highmem_32.c
32153+++ b/arch/x86/mm/highmem_32.c
32154@@ -45,7 +45,11 @@ void *kmap_atomic_prot(struct page *page, pgprot_t prot)
32155 idx = type + KM_TYPE_NR*smp_processor_id();
32156 vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
32157 BUG_ON(!pte_none(*(kmap_pte-idx)));
32158+
32159+ pax_open_kernel();
32160 set_pte(kmap_pte-idx, mk_pte(page, prot));
32161+ pax_close_kernel();
32162+
32163 arch_flush_lazy_mmu_mode();
32164
32165 return (void *)vaddr;
32166diff --git a/arch/x86/mm/hugetlbpage.c b/arch/x86/mm/hugetlbpage.c
32167index 8b977eb..4732c33 100644
32168--- a/arch/x86/mm/hugetlbpage.c
32169+++ b/arch/x86/mm/hugetlbpage.c
32170@@ -80,23 +80,24 @@ int pud_huge(pud_t pud)
32171 #ifdef CONFIG_HUGETLB_PAGE
32172 static unsigned long hugetlb_get_unmapped_area_bottomup(struct file *file,
32173 unsigned long addr, unsigned long len,
32174- unsigned long pgoff, unsigned long flags)
32175+ unsigned long pgoff, unsigned long flags, unsigned long offset)
32176 {
32177 struct hstate *h = hstate_file(file);
32178 struct vm_unmapped_area_info info;
32179-
32180+
32181 info.flags = 0;
32182 info.length = len;
32183 info.low_limit = current->mm->mmap_legacy_base;
32184 info.high_limit = TASK_SIZE;
32185 info.align_mask = PAGE_MASK & ~huge_page_mask(h);
32186 info.align_offset = 0;
32187+ info.threadstack_offset = offset;
32188 return vm_unmapped_area(&info);
32189 }
32190
32191 static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file,
32192 unsigned long addr0, unsigned long len,
32193- unsigned long pgoff, unsigned long flags)
32194+ unsigned long pgoff, unsigned long flags, unsigned long offset)
32195 {
32196 struct hstate *h = hstate_file(file);
32197 struct vm_unmapped_area_info info;
32198@@ -108,6 +109,7 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file,
32199 info.high_limit = current->mm->mmap_base;
32200 info.align_mask = PAGE_MASK & ~huge_page_mask(h);
32201 info.align_offset = 0;
32202+ info.threadstack_offset = offset;
32203 addr = vm_unmapped_area(&info);
32204
32205 /*
32206@@ -120,6 +122,12 @@ static unsigned long hugetlb_get_unmapped_area_topdown(struct file *file,
32207 VM_BUG_ON(addr != -ENOMEM);
32208 info.flags = 0;
32209 info.low_limit = TASK_UNMAPPED_BASE;
32210+
32211+#ifdef CONFIG_PAX_RANDMMAP
32212+ if (current->mm->pax_flags & MF_PAX_RANDMMAP)
32213+ info.low_limit += current->mm->delta_mmap;
32214+#endif
32215+
32216 info.high_limit = TASK_SIZE;
32217 addr = vm_unmapped_area(&info);
32218 }
32219@@ -134,10 +142,20 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
32220 struct hstate *h = hstate_file(file);
32221 struct mm_struct *mm = current->mm;
32222 struct vm_area_struct *vma;
32223+ unsigned long pax_task_size = TASK_SIZE;
32224+ unsigned long offset = gr_rand_threadstack_offset(mm, file, flags);
32225
32226 if (len & ~huge_page_mask(h))
32227 return -EINVAL;
32228- if (len > TASK_SIZE)
32229+
32230+#ifdef CONFIG_PAX_SEGMEXEC
32231+ if (mm->pax_flags & MF_PAX_SEGMEXEC)
32232+ pax_task_size = SEGMEXEC_TASK_SIZE;
32233+#endif
32234+
32235+ pax_task_size -= PAGE_SIZE;
32236+
32237+ if (len > pax_task_size)
32238 return -ENOMEM;
32239
32240 if (flags & MAP_FIXED) {
32241@@ -146,19 +164,22 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
32242 return addr;
32243 }
32244
32245+#ifdef CONFIG_PAX_RANDMMAP
32246+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
32247+#endif
32248+
32249 if (addr) {
32250 addr = ALIGN(addr, huge_page_size(h));
32251 vma = find_vma(mm, addr);
32252- if (TASK_SIZE - len >= addr &&
32253- (!vma || addr + len <= vma->vm_start))
32254+ if (pax_task_size - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
32255 return addr;
32256 }
32257 if (mm->get_unmapped_area == arch_get_unmapped_area)
32258 return hugetlb_get_unmapped_area_bottomup(file, addr, len,
32259- pgoff, flags);
32260+ pgoff, flags, offset);
32261 else
32262 return hugetlb_get_unmapped_area_topdown(file, addr, len,
32263- pgoff, flags);
32264+ pgoff, flags, offset);
32265 }
32266 #endif /* CONFIG_HUGETLB_PAGE */
32267
32268diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
32269index f971306..e83e0f6 100644
32270--- a/arch/x86/mm/init.c
32271+++ b/arch/x86/mm/init.c
32272@@ -4,6 +4,7 @@
32273 #include <linux/swap.h>
32274 #include <linux/memblock.h>
32275 #include <linux/bootmem.h> /* for max_low_pfn */
32276+#include <linux/tboot.h>
32277
32278 #include <asm/cacheflush.h>
32279 #include <asm/e820.h>
32280@@ -17,6 +18,8 @@
32281 #include <asm/proto.h>
32282 #include <asm/dma.h> /* for MAX_DMA_PFN */
32283 #include <asm/microcode.h>
32284+#include <asm/desc.h>
32285+#include <asm/bios_ebda.h>
32286
32287 #include "mm_internal.h"
32288
32289@@ -563,7 +566,18 @@ void __init init_mem_mapping(void)
32290 early_ioremap_page_table_range_init();
32291 #endif
32292
32293+#ifdef CONFIG_PAX_PER_CPU_PGD
32294+ clone_pgd_range(get_cpu_pgd(0, kernel) + KERNEL_PGD_BOUNDARY,
32295+ swapper_pg_dir + KERNEL_PGD_BOUNDARY,
32296+ KERNEL_PGD_PTRS);
32297+ clone_pgd_range(get_cpu_pgd(0, user) + KERNEL_PGD_BOUNDARY,
32298+ swapper_pg_dir + KERNEL_PGD_BOUNDARY,
32299+ KERNEL_PGD_PTRS);
32300+ load_cr3(get_cpu_pgd(0, kernel));
32301+#else
32302 load_cr3(swapper_pg_dir);
32303+#endif
32304+
32305 __flush_tlb_all();
32306
32307 early_memtest(0, max_pfn_mapped << PAGE_SHIFT);
32308@@ -579,10 +593,40 @@ void __init init_mem_mapping(void)
32309 * Access has to be given to non-kernel-ram areas as well, these contain the PCI
32310 * mmio resources as well as potential bios/acpi data regions.
32311 */
32312+
32313+#ifdef CONFIG_GRKERNSEC_KMEM
32314+static unsigned int ebda_start __read_only;
32315+static unsigned int ebda_end __read_only;
32316+#endif
32317+
32318 int devmem_is_allowed(unsigned long pagenr)
32319 {
32320- if (pagenr < 256)
32321+#ifdef CONFIG_GRKERNSEC_KMEM
32322+ /* allow BDA */
32323+ if (!pagenr)
32324 return 1;
32325+ /* allow EBDA */
32326+ if (pagenr >= ebda_start && pagenr < ebda_end)
32327+ return 1;
32328+ /* if tboot is in use, allow access to its hardcoded serial log range */
32329+ if (tboot_enabled() && ((0x60000 >> PAGE_SHIFT) <= pagenr) && (pagenr < (0x68000 >> PAGE_SHIFT)))
32330+ return 1;
32331+#else
32332+ if (!pagenr)
32333+ return 1;
32334+#ifdef CONFIG_VM86
32335+ if (pagenr < (ISA_START_ADDRESS >> PAGE_SHIFT))
32336+ return 1;
32337+#endif
32338+#endif
32339+
32340+ if ((ISA_START_ADDRESS >> PAGE_SHIFT) <= pagenr && pagenr < (ISA_END_ADDRESS >> PAGE_SHIFT))
32341+ return 1;
32342+#ifdef CONFIG_GRKERNSEC_KMEM
32343+ /* throw out everything else below 1MB */
32344+ if (pagenr <= 256)
32345+ return 0;
32346+#endif
32347 if (iomem_is_exclusive(pagenr << PAGE_SHIFT))
32348 return 0;
32349 if (!page_is_ram(pagenr))
32350@@ -628,8 +672,117 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
32351 #endif
32352 }
32353
32354+#ifdef CONFIG_GRKERNSEC_KMEM
32355+static inline void gr_init_ebda(void)
32356+{
32357+ unsigned int ebda_addr;
32358+ unsigned int ebda_size = 0;
32359+
32360+ ebda_addr = get_bios_ebda();
32361+ if (ebda_addr) {
32362+ ebda_size = *(unsigned char *)phys_to_virt(ebda_addr);
32363+ ebda_size <<= 10;
32364+ }
32365+ if (ebda_addr && ebda_size) {
32366+ ebda_start = ebda_addr >> PAGE_SHIFT;
32367+ ebda_end = min((unsigned int)PAGE_ALIGN(ebda_addr + ebda_size), (unsigned int)0xa0000) >> PAGE_SHIFT;
32368+ } else {
32369+ ebda_start = 0x9f000 >> PAGE_SHIFT;
32370+ ebda_end = 0xa0000 >> PAGE_SHIFT;
32371+ }
32372+}
32373+#else
32374+static inline void gr_init_ebda(void) { }
32375+#endif
32376+
32377 void free_initmem(void)
32378 {
32379+#ifdef CONFIG_PAX_KERNEXEC
32380+#ifdef CONFIG_X86_32
32381+ /* PaX: limit KERNEL_CS to actual size */
32382+ unsigned long addr, limit;
32383+ struct desc_struct d;
32384+ int cpu;
32385+#else
32386+ pgd_t *pgd;
32387+ pud_t *pud;
32388+ pmd_t *pmd;
32389+ unsigned long addr, end;
32390+#endif
32391+#endif
32392+
32393+ gr_init_ebda();
32394+
32395+#ifdef CONFIG_PAX_KERNEXEC
32396+#ifdef CONFIG_X86_32
32397+ limit = paravirt_enabled() ? ktva_ktla(0xffffffff) : (unsigned long)&_etext;
32398+ limit = (limit - 1UL) >> PAGE_SHIFT;
32399+
32400+ memset(__LOAD_PHYSICAL_ADDR + PAGE_OFFSET, POISON_FREE_INITMEM, PAGE_SIZE);
32401+ for (cpu = 0; cpu < nr_cpu_ids; cpu++) {
32402+ pack_descriptor(&d, get_desc_base(&get_cpu_gdt_table(cpu)[GDT_ENTRY_KERNEL_CS]), limit, 0x9B, 0xC);
32403+ write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_KERNEL_CS, &d, DESCTYPE_S);
32404+ write_gdt_entry(get_cpu_gdt_table(cpu), GDT_ENTRY_KERNEXEC_KERNEL_CS, &d, DESCTYPE_S);
32405+ }
32406+
32407+ /* PaX: make KERNEL_CS read-only */
32408+ addr = PFN_ALIGN(ktla_ktva((unsigned long)&_text));
32409+ if (!paravirt_enabled())
32410+ set_memory_ro(addr, (PFN_ALIGN(_sdata) - addr) >> PAGE_SHIFT);
32411+/*
32412+ for (addr = ktla_ktva((unsigned long)&_text); addr < (unsigned long)&_sdata; addr += PMD_SIZE) {
32413+ pgd = pgd_offset_k(addr);
32414+ pud = pud_offset(pgd, addr);
32415+ pmd = pmd_offset(pud, addr);
32416+ set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW));
32417+ }
32418+*/
32419+#ifdef CONFIG_X86_PAE
32420+ set_memory_nx(PFN_ALIGN(__init_begin), (PFN_ALIGN(__init_end) - PFN_ALIGN(__init_begin)) >> PAGE_SHIFT);
32421+/*
32422+ for (addr = (unsigned long)&__init_begin; addr < (unsigned long)&__init_end; addr += PMD_SIZE) {
32423+ pgd = pgd_offset_k(addr);
32424+ pud = pud_offset(pgd, addr);
32425+ pmd = pmd_offset(pud, addr);
32426+ set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask)));
32427+ }
32428+*/
32429+#endif
32430+
32431+#ifdef CONFIG_MODULES
32432+ set_memory_4k((unsigned long)MODULES_EXEC_VADDR, (MODULES_EXEC_END - MODULES_EXEC_VADDR) >> PAGE_SHIFT);
32433+#endif
32434+
32435+#else
32436+ /* PaX: make kernel code/rodata read-only, rest non-executable */
32437+ for (addr = __START_KERNEL_map; addr < __START_KERNEL_map + KERNEL_IMAGE_SIZE; addr += PMD_SIZE) {
32438+ pgd = pgd_offset_k(addr);
32439+ pud = pud_offset(pgd, addr);
32440+ pmd = pmd_offset(pud, addr);
32441+ if (!pmd_present(*pmd))
32442+ continue;
32443+ if ((unsigned long)_text <= addr && addr < (unsigned long)_sdata)
32444+ set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW));
32445+ else
32446+ set_pmd(pmd, __pmd(pmd_val(*pmd) | (_PAGE_NX & __supported_pte_mask)));
32447+ }
32448+
32449+ addr = (unsigned long)__va(__pa(__START_KERNEL_map));
32450+ end = addr + KERNEL_IMAGE_SIZE;
32451+ for (; addr < end; addr += PMD_SIZE) {
32452+ pgd = pgd_offset_k(addr);
32453+ pud = pud_offset(pgd, addr);
32454+ pmd = pmd_offset(pud, addr);
32455+ if (!pmd_present(*pmd))
32456+ continue;
32457+ if ((unsigned long)__va(__pa(_text)) <= addr && addr < (unsigned long)__va(__pa(_sdata)))
32458+ set_pmd(pmd, __pmd(pmd_val(*pmd) & ~_PAGE_RW));
32459+ }
32460+#endif
32461+
32462+ flush_tlb_all();
32463+#endif
32464+
32465 free_init_pages("unused kernel",
32466 (unsigned long)(&__init_begin),
32467 (unsigned long)(&__init_end));
32468diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
32469index e395048..cd38278 100644
32470--- a/arch/x86/mm/init_32.c
32471+++ b/arch/x86/mm/init_32.c
32472@@ -62,33 +62,6 @@ static noinline int do_test_wp_bit(void);
32473 bool __read_mostly __vmalloc_start_set = false;
32474
32475 /*
32476- * Creates a middle page table and puts a pointer to it in the
32477- * given global directory entry. This only returns the gd entry
32478- * in non-PAE compilation mode, since the middle layer is folded.
32479- */
32480-static pmd_t * __init one_md_table_init(pgd_t *pgd)
32481-{
32482- pud_t *pud;
32483- pmd_t *pmd_table;
32484-
32485-#ifdef CONFIG_X86_PAE
32486- if (!(pgd_val(*pgd) & _PAGE_PRESENT)) {
32487- pmd_table = (pmd_t *)alloc_low_page();
32488- paravirt_alloc_pmd(&init_mm, __pa(pmd_table) >> PAGE_SHIFT);
32489- set_pgd(pgd, __pgd(__pa(pmd_table) | _PAGE_PRESENT));
32490- pud = pud_offset(pgd, 0);
32491- BUG_ON(pmd_table != pmd_offset(pud, 0));
32492-
32493- return pmd_table;
32494- }
32495-#endif
32496- pud = pud_offset(pgd, 0);
32497- pmd_table = pmd_offset(pud, 0);
32498-
32499- return pmd_table;
32500-}
32501-
32502-/*
32503 * Create a page table and place a pointer to it in a middle page
32504 * directory entry:
32505 */
32506@@ -98,13 +71,28 @@ static pte_t * __init one_page_table_init(pmd_t *pmd)
32507 pte_t *page_table = (pte_t *)alloc_low_page();
32508
32509 paravirt_alloc_pte(&init_mm, __pa(page_table) >> PAGE_SHIFT);
32510+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
32511+ set_pmd(pmd, __pmd(__pa(page_table) | _KERNPG_TABLE));
32512+#else
32513 set_pmd(pmd, __pmd(__pa(page_table) | _PAGE_TABLE));
32514+#endif
32515 BUG_ON(page_table != pte_offset_kernel(pmd, 0));
32516 }
32517
32518 return pte_offset_kernel(pmd, 0);
32519 }
32520
32521+static pmd_t * __init one_md_table_init(pgd_t *pgd)
32522+{
32523+ pud_t *pud;
32524+ pmd_t *pmd_table;
32525+
32526+ pud = pud_offset(pgd, 0);
32527+ pmd_table = pmd_offset(pud, 0);
32528+
32529+ return pmd_table;
32530+}
32531+
32532 pmd_t * __init populate_extra_pmd(unsigned long vaddr)
32533 {
32534 int pgd_idx = pgd_index(vaddr);
32535@@ -208,6 +196,7 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base)
32536 int pgd_idx, pmd_idx;
32537 unsigned long vaddr;
32538 pgd_t *pgd;
32539+ pud_t *pud;
32540 pmd_t *pmd;
32541 pte_t *pte = NULL;
32542 unsigned long count = page_table_range_init_count(start, end);
32543@@ -222,8 +211,13 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base)
32544 pgd = pgd_base + pgd_idx;
32545
32546 for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd++, pgd_idx++) {
32547- pmd = one_md_table_init(pgd);
32548- pmd = pmd + pmd_index(vaddr);
32549+ pud = pud_offset(pgd, vaddr);
32550+ pmd = pmd_offset(pud, vaddr);
32551+
32552+#ifdef CONFIG_X86_PAE
32553+ paravirt_alloc_pmd(&init_mm, __pa(pmd) >> PAGE_SHIFT);
32554+#endif
32555+
32556 for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end);
32557 pmd++, pmd_idx++) {
32558 pte = page_table_kmap_check(one_page_table_init(pmd),
32559@@ -235,11 +229,20 @@ page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd_base)
32560 }
32561 }
32562
32563-static inline int is_kernel_text(unsigned long addr)
32564+static inline int is_kernel_text(unsigned long start, unsigned long end)
32565 {
32566- if (addr >= (unsigned long)_text && addr <= (unsigned long)__init_end)
32567- return 1;
32568- return 0;
32569+ if ((start >= ktla_ktva((unsigned long)_etext) ||
32570+ end <= ktla_ktva((unsigned long)_stext)) &&
32571+ (start >= ktla_ktva((unsigned long)_einittext) ||
32572+ end <= ktla_ktva((unsigned long)_sinittext)) &&
32573+
32574+#ifdef CONFIG_ACPI_SLEEP
32575+ (start >= (unsigned long)__va(acpi_wakeup_address) + 0x4000 || end <= (unsigned long)__va(acpi_wakeup_address)) &&
32576+#endif
32577+
32578+ (start > (unsigned long)__va(0xfffff) || end <= (unsigned long)__va(0xc0000)))
32579+ return 0;
32580+ return 1;
32581 }
32582
32583 /*
32584@@ -256,9 +259,10 @@ kernel_physical_mapping_init(unsigned long start,
32585 unsigned long last_map_addr = end;
32586 unsigned long start_pfn, end_pfn;
32587 pgd_t *pgd_base = swapper_pg_dir;
32588- int pgd_idx, pmd_idx, pte_ofs;
32589+ unsigned int pgd_idx, pmd_idx, pte_ofs;
32590 unsigned long pfn;
32591 pgd_t *pgd;
32592+ pud_t *pud;
32593 pmd_t *pmd;
32594 pte_t *pte;
32595 unsigned pages_2m, pages_4k;
32596@@ -291,8 +295,13 @@ repeat:
32597 pfn = start_pfn;
32598 pgd_idx = pgd_index((pfn<<PAGE_SHIFT) + PAGE_OFFSET);
32599 pgd = pgd_base + pgd_idx;
32600- for (; pgd_idx < PTRS_PER_PGD; pgd++, pgd_idx++) {
32601- pmd = one_md_table_init(pgd);
32602+ for (; pgd_idx < PTRS_PER_PGD && pfn < max_low_pfn; pgd++, pgd_idx++) {
32603+ pud = pud_offset(pgd, 0);
32604+ pmd = pmd_offset(pud, 0);
32605+
32606+#ifdef CONFIG_X86_PAE
32607+ paravirt_alloc_pmd(&init_mm, __pa(pmd) >> PAGE_SHIFT);
32608+#endif
32609
32610 if (pfn >= end_pfn)
32611 continue;
32612@@ -304,14 +313,13 @@ repeat:
32613 #endif
32614 for (; pmd_idx < PTRS_PER_PMD && pfn < end_pfn;
32615 pmd++, pmd_idx++) {
32616- unsigned int addr = pfn * PAGE_SIZE + PAGE_OFFSET;
32617+ unsigned long address = pfn * PAGE_SIZE + PAGE_OFFSET;
32618
32619 /*
32620 * Map with big pages if possible, otherwise
32621 * create normal page tables:
32622 */
32623 if (use_pse) {
32624- unsigned int addr2;
32625 pgprot_t prot = PAGE_KERNEL_LARGE;
32626 /*
32627 * first pass will use the same initial
32628@@ -322,11 +330,7 @@ repeat:
32629 _PAGE_PSE);
32630
32631 pfn &= PMD_MASK >> PAGE_SHIFT;
32632- addr2 = (pfn + PTRS_PER_PTE-1) * PAGE_SIZE +
32633- PAGE_OFFSET + PAGE_SIZE-1;
32634-
32635- if (is_kernel_text(addr) ||
32636- is_kernel_text(addr2))
32637+ if (is_kernel_text(address, address + PMD_SIZE))
32638 prot = PAGE_KERNEL_LARGE_EXEC;
32639
32640 pages_2m++;
32641@@ -343,7 +347,7 @@ repeat:
32642 pte_ofs = pte_index((pfn<<PAGE_SHIFT) + PAGE_OFFSET);
32643 pte += pte_ofs;
32644 for (; pte_ofs < PTRS_PER_PTE && pfn < end_pfn;
32645- pte++, pfn++, pte_ofs++, addr += PAGE_SIZE) {
32646+ pte++, pfn++, pte_ofs++, address += PAGE_SIZE) {
32647 pgprot_t prot = PAGE_KERNEL;
32648 /*
32649 * first pass will use the same initial
32650@@ -351,7 +355,7 @@ repeat:
32651 */
32652 pgprot_t init_prot = __pgprot(PTE_IDENT_ATTR);
32653
32654- if (is_kernel_text(addr))
32655+ if (is_kernel_text(address, address + PAGE_SIZE))
32656 prot = PAGE_KERNEL_EXEC;
32657
32658 pages_4k++;
32659@@ -474,7 +478,7 @@ void __init native_pagetable_init(void)
32660
32661 pud = pud_offset(pgd, va);
32662 pmd = pmd_offset(pud, va);
32663- if (!pmd_present(*pmd))
32664+ if (!pmd_present(*pmd)) // PAX TODO || pmd_large(*pmd))
32665 break;
32666
32667 /* should not be large page here */
32668@@ -532,12 +536,10 @@ void __init early_ioremap_page_table_range_init(void)
32669
32670 static void __init pagetable_init(void)
32671 {
32672- pgd_t *pgd_base = swapper_pg_dir;
32673-
32674- permanent_kmaps_init(pgd_base);
32675+ permanent_kmaps_init(swapper_pg_dir);
32676 }
32677
32678-pteval_t __supported_pte_mask __read_mostly = ~(_PAGE_NX | _PAGE_GLOBAL | _PAGE_IOMAP);
32679+pteval_t __supported_pte_mask __read_only = ~(_PAGE_NX | _PAGE_GLOBAL | _PAGE_IOMAP);
32680 EXPORT_SYMBOL_GPL(__supported_pte_mask);
32681
32682 /* user-defined highmem size */
32683@@ -787,10 +789,10 @@ void __init mem_init(void)
32684 ((unsigned long)&__init_end -
32685 (unsigned long)&__init_begin) >> 10,
32686
32687- (unsigned long)&_etext, (unsigned long)&_edata,
32688- ((unsigned long)&_edata - (unsigned long)&_etext) >> 10,
32689+ (unsigned long)&_sdata, (unsigned long)&_edata,
32690+ ((unsigned long)&_edata - (unsigned long)&_sdata) >> 10,
32691
32692- (unsigned long)&_text, (unsigned long)&_etext,
32693+ ktla_ktva((unsigned long)&_text), ktla_ktva((unsigned long)&_etext),
32694 ((unsigned long)&_etext - (unsigned long)&_text) >> 10);
32695
32696 /*
32697@@ -883,6 +885,7 @@ void set_kernel_text_rw(void)
32698 if (!kernel_set_to_readonly)
32699 return;
32700
32701+ start = ktla_ktva(start);
32702 pr_debug("Set kernel text: %lx - %lx for read write\n",
32703 start, start+size);
32704
32705@@ -897,6 +900,7 @@ void set_kernel_text_ro(void)
32706 if (!kernel_set_to_readonly)
32707 return;
32708
32709+ start = ktla_ktva(start);
32710 pr_debug("Set kernel text: %lx - %lx for read only\n",
32711 start, start+size);
32712
32713@@ -925,6 +929,7 @@ void mark_rodata_ro(void)
32714 unsigned long start = PFN_ALIGN(_text);
32715 unsigned long size = PFN_ALIGN(_etext) - start;
32716
32717+ start = ktla_ktva(start);
32718 set_pages_ro(virt_to_page(start), size >> PAGE_SHIFT);
32719 printk(KERN_INFO "Write protecting the kernel text: %luk\n",
32720 size >> 10);
32721diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
32722index f35c66c..84b95ef 100644
32723--- a/arch/x86/mm/init_64.c
32724+++ b/arch/x86/mm/init_64.c
32725@@ -151,7 +151,7 @@ early_param("gbpages", parse_direct_gbpages_on);
32726 * around without checking the pgd every time.
32727 */
32728
32729-pteval_t __supported_pte_mask __read_mostly = ~_PAGE_IOMAP;
32730+pteval_t __supported_pte_mask __read_only = ~(_PAGE_NX | _PAGE_IOMAP);
32731 EXPORT_SYMBOL_GPL(__supported_pte_mask);
32732
32733 int force_personality32;
32734@@ -184,12 +184,29 @@ void sync_global_pgds(unsigned long start, unsigned long end)
32735
32736 for (address = start; address <= end; address += PGDIR_SIZE) {
32737 const pgd_t *pgd_ref = pgd_offset_k(address);
32738+
32739+#ifdef CONFIG_PAX_PER_CPU_PGD
32740+ unsigned long cpu;
32741+#else
32742 struct page *page;
32743+#endif
32744
32745 if (pgd_none(*pgd_ref))
32746 continue;
32747
32748 spin_lock(&pgd_lock);
32749+
32750+#ifdef CONFIG_PAX_PER_CPU_PGD
32751+ for (cpu = 0; cpu < nr_cpu_ids; ++cpu) {
32752+ pgd_t *pgd = pgd_offset_cpu(cpu, user, address);
32753+
32754+ if (pgd_none(*pgd))
32755+ set_pgd(pgd, *pgd_ref);
32756+ else
32757+ BUG_ON(pgd_page_vaddr(*pgd)
32758+ != pgd_page_vaddr(*pgd_ref));
32759+ pgd = pgd_offset_cpu(cpu, kernel, address);
32760+#else
32761 list_for_each_entry(page, &pgd_list, lru) {
32762 pgd_t *pgd;
32763 spinlock_t *pgt_lock;
32764@@ -198,6 +215,7 @@ void sync_global_pgds(unsigned long start, unsigned long end)
32765 /* the pgt_lock only for Xen */
32766 pgt_lock = &pgd_page_get_mm(page)->page_table_lock;
32767 spin_lock(pgt_lock);
32768+#endif
32769
32770 if (pgd_none(*pgd))
32771 set_pgd(pgd, *pgd_ref);
32772@@ -205,7 +223,10 @@ void sync_global_pgds(unsigned long start, unsigned long end)
32773 BUG_ON(pgd_page_vaddr(*pgd)
32774 != pgd_page_vaddr(*pgd_ref));
32775
32776+#ifndef CONFIG_PAX_PER_CPU_PGD
32777 spin_unlock(pgt_lock);
32778+#endif
32779+
32780 }
32781 spin_unlock(&pgd_lock);
32782 }
32783@@ -238,7 +259,7 @@ static pud_t *fill_pud(pgd_t *pgd, unsigned long vaddr)
32784 {
32785 if (pgd_none(*pgd)) {
32786 pud_t *pud = (pud_t *)spp_getpage();
32787- pgd_populate(&init_mm, pgd, pud);
32788+ pgd_populate_kernel(&init_mm, pgd, pud);
32789 if (pud != pud_offset(pgd, 0))
32790 printk(KERN_ERR "PAGETABLE BUG #00! %p <-> %p\n",
32791 pud, pud_offset(pgd, 0));
32792@@ -250,7 +271,7 @@ static pmd_t *fill_pmd(pud_t *pud, unsigned long vaddr)
32793 {
32794 if (pud_none(*pud)) {
32795 pmd_t *pmd = (pmd_t *) spp_getpage();
32796- pud_populate(&init_mm, pud, pmd);
32797+ pud_populate_kernel(&init_mm, pud, pmd);
32798 if (pmd != pmd_offset(pud, 0))
32799 printk(KERN_ERR "PAGETABLE BUG #01! %p <-> %p\n",
32800 pmd, pmd_offset(pud, 0));
32801@@ -279,7 +300,9 @@ void set_pte_vaddr_pud(pud_t *pud_page, unsigned long vaddr, pte_t new_pte)
32802 pmd = fill_pmd(pud, vaddr);
32803 pte = fill_pte(pmd, vaddr);
32804
32805+ pax_open_kernel();
32806 set_pte(pte, new_pte);
32807+ pax_close_kernel();
32808
32809 /*
32810 * It's enough to flush this one mapping.
32811@@ -338,14 +361,12 @@ static void __init __init_extra_mapping(unsigned long phys, unsigned long size,
32812 pgd = pgd_offset_k((unsigned long)__va(phys));
32813 if (pgd_none(*pgd)) {
32814 pud = (pud_t *) spp_getpage();
32815- set_pgd(pgd, __pgd(__pa(pud) | _KERNPG_TABLE |
32816- _PAGE_USER));
32817+ set_pgd(pgd, __pgd(__pa(pud) | _PAGE_TABLE));
32818 }
32819 pud = pud_offset(pgd, (unsigned long)__va(phys));
32820 if (pud_none(*pud)) {
32821 pmd = (pmd_t *) spp_getpage();
32822- set_pud(pud, __pud(__pa(pmd) | _KERNPG_TABLE |
32823- _PAGE_USER));
32824+ set_pud(pud, __pud(__pa(pmd) | _PAGE_TABLE));
32825 }
32826 pmd = pmd_offset(pud, phys);
32827 BUG_ON(!pmd_none(*pmd));
32828@@ -586,7 +607,7 @@ phys_pud_init(pud_t *pud_page, unsigned long addr, unsigned long end,
32829 prot);
32830
32831 spin_lock(&init_mm.page_table_lock);
32832- pud_populate(&init_mm, pud, pmd);
32833+ pud_populate_kernel(&init_mm, pud, pmd);
32834 spin_unlock(&init_mm.page_table_lock);
32835 }
32836 __flush_tlb_all();
32837@@ -627,7 +648,7 @@ kernel_physical_mapping_init(unsigned long start,
32838 page_size_mask);
32839
32840 spin_lock(&init_mm.page_table_lock);
32841- pgd_populate(&init_mm, pgd, pud);
32842+ pgd_populate_kernel(&init_mm, pgd, pud);
32843 spin_unlock(&init_mm.page_table_lock);
32844 pgd_changed = true;
32845 }
32846@@ -1188,8 +1209,8 @@ int kern_addr_valid(unsigned long addr)
32847 static struct vm_area_struct gate_vma = {
32848 .vm_start = VSYSCALL_START,
32849 .vm_end = VSYSCALL_START + (VSYSCALL_MAPPED_PAGES * PAGE_SIZE),
32850- .vm_page_prot = PAGE_READONLY_EXEC,
32851- .vm_flags = VM_READ | VM_EXEC
32852+ .vm_page_prot = PAGE_READONLY,
32853+ .vm_flags = VM_READ
32854 };
32855
32856 struct vm_area_struct *get_gate_vma(struct mm_struct *mm)
32857@@ -1223,7 +1244,7 @@ int in_gate_area_no_mm(unsigned long addr)
32858
32859 const char *arch_vma_name(struct vm_area_struct *vma)
32860 {
32861- if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso)
32862+ if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso)
32863 return "[vdso]";
32864 if (vma == &gate_vma)
32865 return "[vsyscall]";
32866diff --git a/arch/x86/mm/iomap_32.c b/arch/x86/mm/iomap_32.c
32867index 7b179b4..6bd17777 100644
32868--- a/arch/x86/mm/iomap_32.c
32869+++ b/arch/x86/mm/iomap_32.c
32870@@ -64,7 +64,11 @@ void *kmap_atomic_prot_pfn(unsigned long pfn, pgprot_t prot)
32871 type = kmap_atomic_idx_push();
32872 idx = type + KM_TYPE_NR * smp_processor_id();
32873 vaddr = __fix_to_virt(FIX_KMAP_BEGIN + idx);
32874+
32875+ pax_open_kernel();
32876 set_pte(kmap_pte - idx, pfn_pte(pfn, prot));
32877+ pax_close_kernel();
32878+
32879 arch_flush_lazy_mmu_mode();
32880
32881 return (void *)vaddr;
32882diff --git a/arch/x86/mm/ioremap.c b/arch/x86/mm/ioremap.c
32883index 597ac15..49841be 100644
32884--- a/arch/x86/mm/ioremap.c
32885+++ b/arch/x86/mm/ioremap.c
32886@@ -97,7 +97,7 @@ static void __iomem *__ioremap_caller(resource_size_t phys_addr,
32887 for (pfn = phys_addr >> PAGE_SHIFT; pfn <= last_pfn; pfn++) {
32888 int is_ram = page_is_ram(pfn);
32889
32890- if (is_ram && pfn_valid(pfn) && !PageReserved(pfn_to_page(pfn)))
32891+ if (is_ram && pfn_valid(pfn) && (pfn >= 0x100 || !PageReserved(pfn_to_page(pfn))))
32892 return NULL;
32893 WARN_ON_ONCE(is_ram);
32894 }
32895@@ -256,7 +256,7 @@ EXPORT_SYMBOL(ioremap_prot);
32896 *
32897 * Caller must ensure there is only one unmapping for the same pointer.
32898 */
32899-void iounmap(volatile void __iomem *addr)
32900+void iounmap(const volatile void __iomem *addr)
32901 {
32902 struct vm_struct *p, *o;
32903
32904@@ -310,6 +310,9 @@ void *xlate_dev_mem_ptr(unsigned long phys)
32905
32906 /* If page is RAM, we can use __va. Otherwise ioremap and unmap. */
32907 if (page_is_ram(start >> PAGE_SHIFT))
32908+#ifdef CONFIG_HIGHMEM
32909+ if ((start >> PAGE_SHIFT) < max_low_pfn)
32910+#endif
32911 return __va(phys);
32912
32913 addr = (void __force *)ioremap_cache(start, PAGE_SIZE);
32914@@ -322,13 +325,16 @@ void *xlate_dev_mem_ptr(unsigned long phys)
32915 void unxlate_dev_mem_ptr(unsigned long phys, void *addr)
32916 {
32917 if (page_is_ram(phys >> PAGE_SHIFT))
32918+#ifdef CONFIG_HIGHMEM
32919+ if ((phys >> PAGE_SHIFT) < max_low_pfn)
32920+#endif
32921 return;
32922
32923 iounmap((void __iomem *)((unsigned long)addr & PAGE_MASK));
32924 return;
32925 }
32926
32927-static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __page_aligned_bss;
32928+static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)] __read_only __aligned(PAGE_SIZE);
32929
32930 static inline pmd_t * __init early_ioremap_pmd(unsigned long addr)
32931 {
32932@@ -358,8 +364,7 @@ void __init early_ioremap_init(void)
32933 early_ioremap_setup();
32934
32935 pmd = early_ioremap_pmd(fix_to_virt(FIX_BTMAP_BEGIN));
32936- memset(bm_pte, 0, sizeof(bm_pte));
32937- pmd_populate_kernel(&init_mm, pmd, bm_pte);
32938+ pmd_populate_user(&init_mm, pmd, bm_pte);
32939
32940 /*
32941 * The boot-ioremap range spans multiple pmds, for which
32942diff --git a/arch/x86/mm/kmemcheck/kmemcheck.c b/arch/x86/mm/kmemcheck/kmemcheck.c
32943index dd89a13..d77bdcc 100644
32944--- a/arch/x86/mm/kmemcheck/kmemcheck.c
32945+++ b/arch/x86/mm/kmemcheck/kmemcheck.c
32946@@ -628,9 +628,9 @@ bool kmemcheck_fault(struct pt_regs *regs, unsigned long address,
32947 * memory (e.g. tracked pages)? For now, we need this to avoid
32948 * invoking kmemcheck for PnP BIOS calls.
32949 */
32950- if (regs->flags & X86_VM_MASK)
32951+ if (v8086_mode(regs))
32952 return false;
32953- if (regs->cs != __KERNEL_CS)
32954+ if (regs->cs != __KERNEL_CS && regs->cs != __KERNEXEC_KERNEL_CS)
32955 return false;
32956
32957 pte = kmemcheck_pte_lookup(address);
32958diff --git a/arch/x86/mm/mmap.c b/arch/x86/mm/mmap.c
32959index 25e7e13..1964579 100644
32960--- a/arch/x86/mm/mmap.c
32961+++ b/arch/x86/mm/mmap.c
32962@@ -52,7 +52,7 @@ static unsigned int stack_maxrandom_size(void)
32963 * Leave an at least ~128 MB hole with possible stack randomization.
32964 */
32965 #define MIN_GAP (128*1024*1024UL + stack_maxrandom_size())
32966-#define MAX_GAP (TASK_SIZE/6*5)
32967+#define MAX_GAP (pax_task_size/6*5)
32968
32969 static int mmap_is_legacy(void)
32970 {
32971@@ -82,27 +82,40 @@ static unsigned long mmap_rnd(void)
32972 return rnd << PAGE_SHIFT;
32973 }
32974
32975-static unsigned long mmap_base(void)
32976+static unsigned long mmap_base(struct mm_struct *mm)
32977 {
32978 unsigned long gap = rlimit(RLIMIT_STACK);
32979+ unsigned long pax_task_size = TASK_SIZE;
32980+
32981+#ifdef CONFIG_PAX_SEGMEXEC
32982+ if (mm->pax_flags & MF_PAX_SEGMEXEC)
32983+ pax_task_size = SEGMEXEC_TASK_SIZE;
32984+#endif
32985
32986 if (gap < MIN_GAP)
32987 gap = MIN_GAP;
32988 else if (gap > MAX_GAP)
32989 gap = MAX_GAP;
32990
32991- return PAGE_ALIGN(TASK_SIZE - gap - mmap_rnd());
32992+ return PAGE_ALIGN(pax_task_size - gap - mmap_rnd());
32993 }
32994
32995 /*
32996 * Bottom-up (legacy) layout on X86_32 did not support randomization, X86_64
32997 * does, but not when emulating X86_32
32998 */
32999-static unsigned long mmap_legacy_base(void)
33000+static unsigned long mmap_legacy_base(struct mm_struct *mm)
33001 {
33002- if (mmap_is_ia32())
33003+ if (mmap_is_ia32()) {
33004+
33005+#ifdef CONFIG_PAX_SEGMEXEC
33006+ if (mm->pax_flags & MF_PAX_SEGMEXEC)
33007+ return SEGMEXEC_TASK_UNMAPPED_BASE;
33008+ else
33009+#endif
33010+
33011 return TASK_UNMAPPED_BASE;
33012- else
33013+ } else
33014 return TASK_UNMAPPED_BASE + mmap_rnd();
33015 }
33016
33017@@ -112,8 +125,15 @@ static unsigned long mmap_legacy_base(void)
33018 */
33019 void arch_pick_mmap_layout(struct mm_struct *mm)
33020 {
33021- mm->mmap_legacy_base = mmap_legacy_base();
33022- mm->mmap_base = mmap_base();
33023+ mm->mmap_legacy_base = mmap_legacy_base(mm);
33024+ mm->mmap_base = mmap_base(mm);
33025+
33026+#ifdef CONFIG_PAX_RANDMMAP
33027+ if (mm->pax_flags & MF_PAX_RANDMMAP) {
33028+ mm->mmap_legacy_base += mm->delta_mmap;
33029+ mm->mmap_base -= mm->delta_mmap + mm->delta_stack;
33030+ }
33031+#endif
33032
33033 if (mmap_is_legacy()) {
33034 mm->mmap_base = mm->mmap_legacy_base;
33035diff --git a/arch/x86/mm/mmio-mod.c b/arch/x86/mm/mmio-mod.c
33036index 0057a7a..95c7edd 100644
33037--- a/arch/x86/mm/mmio-mod.c
33038+++ b/arch/x86/mm/mmio-mod.c
33039@@ -194,7 +194,7 @@ static void pre(struct kmmio_probe *p, struct pt_regs *regs,
33040 break;
33041 default:
33042 {
33043- unsigned char *ip = (unsigned char *)instptr;
33044+ unsigned char *ip = (unsigned char *)ktla_ktva(instptr);
33045 my_trace->opcode = MMIO_UNKNOWN_OP;
33046 my_trace->width = 0;
33047 my_trace->value = (*ip) << 16 | *(ip + 1) << 8 |
33048@@ -234,7 +234,7 @@ static void post(struct kmmio_probe *p, unsigned long condition,
33049 static void ioremap_trace_core(resource_size_t offset, unsigned long size,
33050 void __iomem *addr)
33051 {
33052- static atomic_t next_id;
33053+ static atomic_unchecked_t next_id;
33054 struct remap_trace *trace = kmalloc(sizeof(*trace), GFP_KERNEL);
33055 /* These are page-unaligned. */
33056 struct mmiotrace_map map = {
33057@@ -258,7 +258,7 @@ static void ioremap_trace_core(resource_size_t offset, unsigned long size,
33058 .private = trace
33059 },
33060 .phys = offset,
33061- .id = atomic_inc_return(&next_id)
33062+ .id = atomic_inc_return_unchecked(&next_id)
33063 };
33064 map.map_id = trace->id;
33065
33066@@ -290,7 +290,7 @@ void mmiotrace_ioremap(resource_size_t offset, unsigned long size,
33067 ioremap_trace_core(offset, size, addr);
33068 }
33069
33070-static void iounmap_trace_core(volatile void __iomem *addr)
33071+static void iounmap_trace_core(const volatile void __iomem *addr)
33072 {
33073 struct mmiotrace_map map = {
33074 .phys = 0,
33075@@ -328,7 +328,7 @@ not_enabled:
33076 }
33077 }
33078
33079-void mmiotrace_iounmap(volatile void __iomem *addr)
33080+void mmiotrace_iounmap(const volatile void __iomem *addr)
33081 {
33082 might_sleep();
33083 if (is_enabled()) /* recheck and proper locking in *_core() */
33084diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
33085index 1d045f9..3a00249 100644
33086--- a/arch/x86/mm/numa.c
33087+++ b/arch/x86/mm/numa.c
33088@@ -478,7 +478,7 @@ static bool __init numa_meminfo_cover_memory(const struct numa_meminfo *mi)
33089 return true;
33090 }
33091
33092-static int __init numa_register_memblks(struct numa_meminfo *mi)
33093+static int __init __intentional_overflow(-1) numa_register_memblks(struct numa_meminfo *mi)
33094 {
33095 unsigned long uninitialized_var(pfn_align);
33096 int i, nid;
33097diff --git a/arch/x86/mm/pageattr-test.c b/arch/x86/mm/pageattr-test.c
33098index 461bc82..4e091a3 100644
33099--- a/arch/x86/mm/pageattr-test.c
33100+++ b/arch/x86/mm/pageattr-test.c
33101@@ -35,7 +35,7 @@ enum {
33102
33103 static int pte_testbit(pte_t pte)
33104 {
33105- return pte_flags(pte) & _PAGE_UNUSED1;
33106+ return pte_flags(pte) & _PAGE_CPA_TEST;
33107 }
33108
33109 struct split_state {
33110diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
33111index ae242a7..1c7998f 100644
33112--- a/arch/x86/mm/pageattr.c
33113+++ b/arch/x86/mm/pageattr.c
33114@@ -262,7 +262,7 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address,
33115 */
33116 #ifdef CONFIG_PCI_BIOS
33117 if (pcibios_enabled && within(pfn, BIOS_BEGIN >> PAGE_SHIFT, BIOS_END >> PAGE_SHIFT))
33118- pgprot_val(forbidden) |= _PAGE_NX;
33119+ pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask;
33120 #endif
33121
33122 /*
33123@@ -270,9 +270,10 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address,
33124 * Does not cover __inittext since that is gone later on. On
33125 * 64bit we do not enforce !NX on the low mapping
33126 */
33127- if (within(address, (unsigned long)_text, (unsigned long)_etext))
33128- pgprot_val(forbidden) |= _PAGE_NX;
33129+ if (within(address, ktla_ktva((unsigned long)_text), ktla_ktva((unsigned long)_etext)))
33130+ pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask;
33131
33132+#ifdef CONFIG_DEBUG_RODATA
33133 /*
33134 * The .rodata section needs to be read-only. Using the pfn
33135 * catches all aliases.
33136@@ -280,6 +281,7 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address,
33137 if (within(pfn, __pa_symbol(__start_rodata) >> PAGE_SHIFT,
33138 __pa_symbol(__end_rodata) >> PAGE_SHIFT))
33139 pgprot_val(forbidden) |= _PAGE_RW;
33140+#endif
33141
33142 #if defined(CONFIG_X86_64) && defined(CONFIG_DEBUG_RODATA)
33143 /*
33144@@ -318,6 +320,13 @@ static inline pgprot_t static_protections(pgprot_t prot, unsigned long address,
33145 }
33146 #endif
33147
33148+#ifdef CONFIG_PAX_KERNEXEC
33149+ if (within(pfn, __pa(ktla_ktva((unsigned long)&_text)), __pa((unsigned long)&_sdata))) {
33150+ pgprot_val(forbidden) |= _PAGE_RW;
33151+ pgprot_val(forbidden) |= _PAGE_NX & __supported_pte_mask;
33152+ }
33153+#endif
33154+
33155 prot = __pgprot(pgprot_val(prot) & ~pgprot_val(forbidden));
33156
33157 return prot;
33158@@ -420,23 +429,37 @@ EXPORT_SYMBOL_GPL(slow_virt_to_phys);
33159 static void __set_pmd_pte(pte_t *kpte, unsigned long address, pte_t pte)
33160 {
33161 /* change init_mm */
33162+ pax_open_kernel();
33163 set_pte_atomic(kpte, pte);
33164+
33165 #ifdef CONFIG_X86_32
33166 if (!SHARED_KERNEL_PMD) {
33167+
33168+#ifdef CONFIG_PAX_PER_CPU_PGD
33169+ unsigned long cpu;
33170+#else
33171 struct page *page;
33172+#endif
33173
33174+#ifdef CONFIG_PAX_PER_CPU_PGD
33175+ for (cpu = 0; cpu < nr_cpu_ids; ++cpu) {
33176+ pgd_t *pgd = get_cpu_pgd(cpu, kernel);
33177+#else
33178 list_for_each_entry(page, &pgd_list, lru) {
33179- pgd_t *pgd;
33180+ pgd_t *pgd = (pgd_t *)page_address(page);
33181+#endif
33182+
33183 pud_t *pud;
33184 pmd_t *pmd;
33185
33186- pgd = (pgd_t *)page_address(page) + pgd_index(address);
33187+ pgd += pgd_index(address);
33188 pud = pud_offset(pgd, address);
33189 pmd = pmd_offset(pud, address);
33190 set_pte_atomic((pte_t *)pmd, pte);
33191 }
33192 }
33193 #endif
33194+ pax_close_kernel();
33195 }
33196
33197 static int
33198diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c
33199index 6574388..87e9bef 100644
33200--- a/arch/x86/mm/pat.c
33201+++ b/arch/x86/mm/pat.c
33202@@ -376,7 +376,7 @@ int free_memtype(u64 start, u64 end)
33203
33204 if (!entry) {
33205 printk(KERN_INFO "%s:%d freeing invalid memtype [mem %#010Lx-%#010Lx]\n",
33206- current->comm, current->pid, start, end - 1);
33207+ current->comm, task_pid_nr(current), start, end - 1);
33208 return -EINVAL;
33209 }
33210
33211@@ -506,8 +506,8 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size)
33212
33213 while (cursor < to) {
33214 if (!devmem_is_allowed(pfn)) {
33215- printk(KERN_INFO "Program %s tried to access /dev/mem between [mem %#010Lx-%#010Lx]\n",
33216- current->comm, from, to - 1);
33217+ printk(KERN_INFO "Program %s tried to access /dev/mem between [mem %#010Lx-%#010Lx] (%#010Lx)\n",
33218+ current->comm, from, to - 1, cursor);
33219 return 0;
33220 }
33221 cursor += PAGE_SIZE;
33222@@ -577,7 +577,7 @@ int kernel_map_sync_memtype(u64 base, unsigned long size, unsigned long flags)
33223 if (ioremap_change_attr((unsigned long)__va(base), id_sz, flags) < 0) {
33224 printk(KERN_INFO "%s:%d ioremap_change_attr failed %s "
33225 "for [mem %#010Lx-%#010Lx]\n",
33226- current->comm, current->pid,
33227+ current->comm, task_pid_nr(current),
33228 cattr_name(flags),
33229 base, (unsigned long long)(base + size-1));
33230 return -EINVAL;
33231@@ -612,7 +612,7 @@ static int reserve_pfn_range(u64 paddr, unsigned long size, pgprot_t *vma_prot,
33232 flags = lookup_memtype(paddr);
33233 if (want_flags != flags) {
33234 printk(KERN_WARNING "%s:%d map pfn RAM range req %s for [mem %#010Lx-%#010Lx], got %s\n",
33235- current->comm, current->pid,
33236+ current->comm, task_pid_nr(current),
33237 cattr_name(want_flags),
33238 (unsigned long long)paddr,
33239 (unsigned long long)(paddr + size - 1),
33240@@ -634,7 +634,7 @@ static int reserve_pfn_range(u64 paddr, unsigned long size, pgprot_t *vma_prot,
33241 free_memtype(paddr, paddr + size);
33242 printk(KERN_ERR "%s:%d map pfn expected mapping type %s"
33243 " for [mem %#010Lx-%#010Lx], got %s\n",
33244- current->comm, current->pid,
33245+ current->comm, task_pid_nr(current),
33246 cattr_name(want_flags),
33247 (unsigned long long)paddr,
33248 (unsigned long long)(paddr + size - 1),
33249diff --git a/arch/x86/mm/pat_rbtree.c b/arch/x86/mm/pat_rbtree.c
33250index 415f6c4..d319983 100644
33251--- a/arch/x86/mm/pat_rbtree.c
33252+++ b/arch/x86/mm/pat_rbtree.c
33253@@ -160,7 +160,7 @@ success:
33254
33255 failure:
33256 printk(KERN_INFO "%s:%d conflicting memory types "
33257- "%Lx-%Lx %s<->%s\n", current->comm, current->pid, start,
33258+ "%Lx-%Lx %s<->%s\n", current->comm, task_pid_nr(current), start,
33259 end, cattr_name(found_type), cattr_name(match->type));
33260 return -EBUSY;
33261 }
33262diff --git a/arch/x86/mm/pf_in.c b/arch/x86/mm/pf_in.c
33263index 9f0614d..92ae64a 100644
33264--- a/arch/x86/mm/pf_in.c
33265+++ b/arch/x86/mm/pf_in.c
33266@@ -148,7 +148,7 @@ enum reason_type get_ins_type(unsigned long ins_addr)
33267 int i;
33268 enum reason_type rv = OTHERS;
33269
33270- p = (unsigned char *)ins_addr;
33271+ p = (unsigned char *)ktla_ktva(ins_addr);
33272 p += skip_prefix(p, &prf);
33273 p += get_opcode(p, &opcode);
33274
33275@@ -168,7 +168,7 @@ static unsigned int get_ins_reg_width(unsigned long ins_addr)
33276 struct prefix_bits prf;
33277 int i;
33278
33279- p = (unsigned char *)ins_addr;
33280+ p = (unsigned char *)ktla_ktva(ins_addr);
33281 p += skip_prefix(p, &prf);
33282 p += get_opcode(p, &opcode);
33283
33284@@ -191,7 +191,7 @@ unsigned int get_ins_mem_width(unsigned long ins_addr)
33285 struct prefix_bits prf;
33286 int i;
33287
33288- p = (unsigned char *)ins_addr;
33289+ p = (unsigned char *)ktla_ktva(ins_addr);
33290 p += skip_prefix(p, &prf);
33291 p += get_opcode(p, &opcode);
33292
33293@@ -415,7 +415,7 @@ unsigned long get_ins_reg_val(unsigned long ins_addr, struct pt_regs *regs)
33294 struct prefix_bits prf;
33295 int i;
33296
33297- p = (unsigned char *)ins_addr;
33298+ p = (unsigned char *)ktla_ktva(ins_addr);
33299 p += skip_prefix(p, &prf);
33300 p += get_opcode(p, &opcode);
33301 for (i = 0; i < ARRAY_SIZE(reg_rop); i++)
33302@@ -470,7 +470,7 @@ unsigned long get_ins_imm_val(unsigned long ins_addr)
33303 struct prefix_bits prf;
33304 int i;
33305
33306- p = (unsigned char *)ins_addr;
33307+ p = (unsigned char *)ktla_ktva(ins_addr);
33308 p += skip_prefix(p, &prf);
33309 p += get_opcode(p, &opcode);
33310 for (i = 0; i < ARRAY_SIZE(imm_wop); i++)
33311diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
33312index c96314a..433b127 100644
33313--- a/arch/x86/mm/pgtable.c
33314+++ b/arch/x86/mm/pgtable.c
33315@@ -97,10 +97,71 @@ static inline void pgd_list_del(pgd_t *pgd)
33316 list_del(&page->lru);
33317 }
33318
33319-#define UNSHARED_PTRS_PER_PGD \
33320- (SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD)
33321+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
33322+pgdval_t clone_pgd_mask __read_only = ~_PAGE_PRESENT;
33323
33324+void __shadow_user_pgds(pgd_t *dst, const pgd_t *src)
33325+{
33326+ unsigned int count = USER_PGD_PTRS;
33327
33328+ if (!pax_user_shadow_base)
33329+ return;
33330+
33331+ while (count--)
33332+ *dst++ = __pgd((pgd_val(*src++) | (_PAGE_NX & __supported_pte_mask)) & ~_PAGE_USER);
33333+}
33334+#endif
33335+
33336+#ifdef CONFIG_PAX_PER_CPU_PGD
33337+void __clone_user_pgds(pgd_t *dst, const pgd_t *src)
33338+{
33339+ unsigned int count = USER_PGD_PTRS;
33340+
33341+ while (count--) {
33342+ pgd_t pgd;
33343+
33344+#ifdef CONFIG_X86_64
33345+ pgd = __pgd(pgd_val(*src++) | _PAGE_USER);
33346+#else
33347+ pgd = *src++;
33348+#endif
33349+
33350+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
33351+ pgd = __pgd(pgd_val(pgd) & clone_pgd_mask);
33352+#endif
33353+
33354+ *dst++ = pgd;
33355+ }
33356+
33357+}
33358+#endif
33359+
33360+#ifdef CONFIG_X86_64
33361+#define pxd_t pud_t
33362+#define pyd_t pgd_t
33363+#define paravirt_release_pxd(pfn) paravirt_release_pud(pfn)
33364+#define pgtable_pxd_page_ctor(page) true
33365+#define pgtable_pxd_page_dtor(page)
33366+#define pxd_free(mm, pud) pud_free((mm), (pud))
33367+#define pyd_populate(mm, pgd, pud) pgd_populate((mm), (pgd), (pud))
33368+#define pyd_offset(mm, address) pgd_offset((mm), (address))
33369+#define PYD_SIZE PGDIR_SIZE
33370+#else
33371+#define pxd_t pmd_t
33372+#define pyd_t pud_t
33373+#define paravirt_release_pxd(pfn) paravirt_release_pmd(pfn)
33374+#define pgtable_pxd_page_ctor(page) pgtable_pmd_page_ctor(page)
33375+#define pgtable_pxd_page_dtor(page) pgtable_pmd_page_dtor(page)
33376+#define pxd_free(mm, pud) pmd_free((mm), (pud))
33377+#define pyd_populate(mm, pgd, pud) pud_populate((mm), (pgd), (pud))
33378+#define pyd_offset(mm, address) pud_offset((mm), (address))
33379+#define PYD_SIZE PUD_SIZE
33380+#endif
33381+
33382+#ifdef CONFIG_PAX_PER_CPU_PGD
33383+static inline void pgd_ctor(struct mm_struct *mm, pgd_t *pgd) {}
33384+static inline void pgd_dtor(pgd_t *pgd) {}
33385+#else
33386 static void pgd_set_mm(pgd_t *pgd, struct mm_struct *mm)
33387 {
33388 BUILD_BUG_ON(sizeof(virt_to_page(pgd)->index) < sizeof(mm));
33389@@ -141,6 +202,7 @@ static void pgd_dtor(pgd_t *pgd)
33390 pgd_list_del(pgd);
33391 spin_unlock(&pgd_lock);
33392 }
33393+#endif
33394
33395 /*
33396 * List of all pgd's needed for non-PAE so it can invalidate entries
33397@@ -153,7 +215,7 @@ static void pgd_dtor(pgd_t *pgd)
33398 * -- nyc
33399 */
33400
33401-#ifdef CONFIG_X86_PAE
33402+#if defined(CONFIG_X86_32) && defined(CONFIG_X86_PAE)
33403 /*
33404 * In PAE mode, we need to do a cr3 reload (=tlb flush) when
33405 * updating the top-level pagetable entries to guarantee the
33406@@ -165,7 +227,7 @@ static void pgd_dtor(pgd_t *pgd)
33407 * not shared between pagetables (!SHARED_KERNEL_PMDS), we allocate
33408 * and initialize the kernel pmds here.
33409 */
33410-#define PREALLOCATED_PMDS UNSHARED_PTRS_PER_PGD
33411+#define PREALLOCATED_PXDS (SHARED_KERNEL_PMD ? KERNEL_PGD_BOUNDARY : PTRS_PER_PGD)
33412
33413 void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd)
33414 {
33415@@ -183,43 +245,45 @@ void pud_populate(struct mm_struct *mm, pud_t *pudp, pmd_t *pmd)
33416 */
33417 flush_tlb_mm(mm);
33418 }
33419+#elif defined(CONFIG_X86_64) && defined(CONFIG_PAX_PER_CPU_PGD)
33420+#define PREALLOCATED_PXDS USER_PGD_PTRS
33421 #else /* !CONFIG_X86_PAE */
33422
33423 /* No need to prepopulate any pagetable entries in non-PAE modes. */
33424-#define PREALLOCATED_PMDS 0
33425+#define PREALLOCATED_PXDS 0
33426
33427 #endif /* CONFIG_X86_PAE */
33428
33429-static void free_pmds(pmd_t *pmds[])
33430+static void free_pxds(pxd_t *pxds[])
33431 {
33432 int i;
33433
33434- for(i = 0; i < PREALLOCATED_PMDS; i++)
33435- if (pmds[i]) {
33436- pgtable_pmd_page_dtor(virt_to_page(pmds[i]));
33437- free_page((unsigned long)pmds[i]);
33438+ for(i = 0; i < PREALLOCATED_PXDS; i++)
33439+ if (pxds[i]) {
33440+ pgtable_pxd_page_dtor(virt_to_page(pxds[i]));
33441+ free_page((unsigned long)pxds[i]);
33442 }
33443 }
33444
33445-static int preallocate_pmds(pmd_t *pmds[])
33446+static int preallocate_pxds(pxd_t *pxds[])
33447 {
33448 int i;
33449 bool failed = false;
33450
33451- for(i = 0; i < PREALLOCATED_PMDS; i++) {
33452- pmd_t *pmd = (pmd_t *)__get_free_page(PGALLOC_GFP);
33453- if (!pmd)
33454+ for(i = 0; i < PREALLOCATED_PXDS; i++) {
33455+ pxd_t *pxd = (pxd_t *)__get_free_page(PGALLOC_GFP);
33456+ if (!pxd)
33457 failed = true;
33458- if (pmd && !pgtable_pmd_page_ctor(virt_to_page(pmd))) {
33459- free_page((unsigned long)pmd);
33460- pmd = NULL;
33461+ if (pxd && !pgtable_pxd_page_ctor(virt_to_page(pxd))) {
33462+ free_page((unsigned long)pxd);
33463+ pxd = NULL;
33464 failed = true;
33465 }
33466- pmds[i] = pmd;
33467+ pxds[i] = pxd;
33468 }
33469
33470 if (failed) {
33471- free_pmds(pmds);
33472+ free_pxds(pxds);
33473 return -ENOMEM;
33474 }
33475
33476@@ -232,49 +296,52 @@ static int preallocate_pmds(pmd_t *pmds[])
33477 * preallocate which never got a corresponding vma will need to be
33478 * freed manually.
33479 */
33480-static void pgd_mop_up_pmds(struct mm_struct *mm, pgd_t *pgdp)
33481+static void pgd_mop_up_pxds(struct mm_struct *mm, pgd_t *pgdp)
33482 {
33483 int i;
33484
33485- for(i = 0; i < PREALLOCATED_PMDS; i++) {
33486+ for(i = 0; i < PREALLOCATED_PXDS; i++) {
33487 pgd_t pgd = pgdp[i];
33488
33489 if (pgd_val(pgd) != 0) {
33490- pmd_t *pmd = (pmd_t *)pgd_page_vaddr(pgd);
33491+ pxd_t *pxd = (pxd_t *)pgd_page_vaddr(pgd);
33492
33493- pgdp[i] = native_make_pgd(0);
33494+ set_pgd(pgdp + i, native_make_pgd(0));
33495
33496- paravirt_release_pmd(pgd_val(pgd) >> PAGE_SHIFT);
33497- pmd_free(mm, pmd);
33498+ paravirt_release_pxd(pgd_val(pgd) >> PAGE_SHIFT);
33499+ pxd_free(mm, pxd);
33500 }
33501 }
33502 }
33503
33504-static void pgd_prepopulate_pmd(struct mm_struct *mm, pgd_t *pgd, pmd_t *pmds[])
33505+static void pgd_prepopulate_pxd(struct mm_struct *mm, pgd_t *pgd, pxd_t *pxds[])
33506 {
33507- pud_t *pud;
33508+ pyd_t *pyd;
33509 int i;
33510
33511- if (PREALLOCATED_PMDS == 0) /* Work around gcc-3.4.x bug */
33512+ if (PREALLOCATED_PXDS == 0) /* Work around gcc-3.4.x bug */
33513 return;
33514
33515- pud = pud_offset(pgd, 0);
33516-
33517- for (i = 0; i < PREALLOCATED_PMDS; i++, pud++) {
33518- pmd_t *pmd = pmds[i];
33519+#ifdef CONFIG_X86_64
33520+ pyd = pyd_offset(mm, 0L);
33521+#else
33522+ pyd = pyd_offset(pgd, 0L);
33523+#endif
33524
33525+ for (i = 0; i < PREALLOCATED_PXDS; i++, pyd++) {
33526+ pxd_t *pxd = pxds[i];
33527 if (i >= KERNEL_PGD_BOUNDARY)
33528- memcpy(pmd, (pmd_t *)pgd_page_vaddr(swapper_pg_dir[i]),
33529- sizeof(pmd_t) * PTRS_PER_PMD);
33530+ memcpy(pxd, (pxd_t *)pgd_page_vaddr(swapper_pg_dir[i]),
33531+ sizeof(pxd_t) * PTRS_PER_PMD);
33532
33533- pud_populate(mm, pud, pmd);
33534+ pyd_populate(mm, pyd, pxd);
33535 }
33536 }
33537
33538 pgd_t *pgd_alloc(struct mm_struct *mm)
33539 {
33540 pgd_t *pgd;
33541- pmd_t *pmds[PREALLOCATED_PMDS];
33542+ pxd_t *pxds[PREALLOCATED_PXDS];
33543
33544 pgd = (pgd_t *)__get_free_page(PGALLOC_GFP);
33545
33546@@ -283,11 +350,11 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
33547
33548 mm->pgd = pgd;
33549
33550- if (preallocate_pmds(pmds) != 0)
33551+ if (preallocate_pxds(pxds) != 0)
33552 goto out_free_pgd;
33553
33554 if (paravirt_pgd_alloc(mm) != 0)
33555- goto out_free_pmds;
33556+ goto out_free_pxds;
33557
33558 /*
33559 * Make sure that pre-populating the pmds is atomic with
33560@@ -297,14 +364,14 @@ pgd_t *pgd_alloc(struct mm_struct *mm)
33561 spin_lock(&pgd_lock);
33562
33563 pgd_ctor(mm, pgd);
33564- pgd_prepopulate_pmd(mm, pgd, pmds);
33565+ pgd_prepopulate_pxd(mm, pgd, pxds);
33566
33567 spin_unlock(&pgd_lock);
33568
33569 return pgd;
33570
33571-out_free_pmds:
33572- free_pmds(pmds);
33573+out_free_pxds:
33574+ free_pxds(pxds);
33575 out_free_pgd:
33576 free_page((unsigned long)pgd);
33577 out:
33578@@ -313,7 +380,7 @@ out:
33579
33580 void pgd_free(struct mm_struct *mm, pgd_t *pgd)
33581 {
33582- pgd_mop_up_pmds(mm, pgd);
33583+ pgd_mop_up_pxds(mm, pgd);
33584 pgd_dtor(pgd);
33585 paravirt_pgd_free(mm, pgd);
33586 free_page((unsigned long)pgd);
33587diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
33588index 4dd8cf6..f9d143e 100644
33589--- a/arch/x86/mm/pgtable_32.c
33590+++ b/arch/x86/mm/pgtable_32.c
33591@@ -47,10 +47,13 @@ void set_pte_vaddr(unsigned long vaddr, pte_t pteval)
33592 return;
33593 }
33594 pte = pte_offset_kernel(pmd, vaddr);
33595+
33596+ pax_open_kernel();
33597 if (pte_val(pteval))
33598 set_pte_at(&init_mm, vaddr, pte, pteval);
33599 else
33600 pte_clear(&init_mm, vaddr, pte);
33601+ pax_close_kernel();
33602
33603 /*
33604 * It's enough to flush this one mapping.
33605diff --git a/arch/x86/mm/physaddr.c b/arch/x86/mm/physaddr.c
33606index e666cbb..61788c45 100644
33607--- a/arch/x86/mm/physaddr.c
33608+++ b/arch/x86/mm/physaddr.c
33609@@ -10,7 +10,7 @@
33610 #ifdef CONFIG_X86_64
33611
33612 #ifdef CONFIG_DEBUG_VIRTUAL
33613-unsigned long __phys_addr(unsigned long x)
33614+unsigned long __intentional_overflow(-1) __phys_addr(unsigned long x)
33615 {
33616 unsigned long y = x - __START_KERNEL_map;
33617
33618@@ -67,7 +67,7 @@ EXPORT_SYMBOL(__virt_addr_valid);
33619 #else
33620
33621 #ifdef CONFIG_DEBUG_VIRTUAL
33622-unsigned long __phys_addr(unsigned long x)
33623+unsigned long __intentional_overflow(-1) __phys_addr(unsigned long x)
33624 {
33625 unsigned long phys_addr = x - PAGE_OFFSET;
33626 /* VMALLOC_* aren't constants */
33627diff --git a/arch/x86/mm/setup_nx.c b/arch/x86/mm/setup_nx.c
33628index 90555bf..f5f1828 100644
33629--- a/arch/x86/mm/setup_nx.c
33630+++ b/arch/x86/mm/setup_nx.c
33631@@ -5,8 +5,10 @@
33632 #include <asm/pgtable.h>
33633 #include <asm/proto.h>
33634
33635+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
33636 static int disable_nx;
33637
33638+#ifndef CONFIG_PAX_PAGEEXEC
33639 /*
33640 * noexec = on|off
33641 *
33642@@ -28,12 +30,17 @@ static int __init noexec_setup(char *str)
33643 return 0;
33644 }
33645 early_param("noexec", noexec_setup);
33646+#endif
33647+
33648+#endif
33649
33650 void x86_configure_nx(void)
33651 {
33652+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
33653 if (cpu_has_nx && !disable_nx)
33654 __supported_pte_mask |= _PAGE_NX;
33655 else
33656+#endif
33657 __supported_pte_mask &= ~_PAGE_NX;
33658 }
33659
33660diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c
33661index dd8dda1..9e9b0f6 100644
33662--- a/arch/x86/mm/tlb.c
33663+++ b/arch/x86/mm/tlb.c
33664@@ -48,7 +48,11 @@ void leave_mm(int cpu)
33665 BUG();
33666 if (cpumask_test_cpu(cpu, mm_cpumask(active_mm))) {
33667 cpumask_clear_cpu(cpu, mm_cpumask(active_mm));
33668+
33669+#ifndef CONFIG_PAX_PER_CPU_PGD
33670 load_cr3(swapper_pg_dir);
33671+#endif
33672+
33673 }
33674 }
33675 EXPORT_SYMBOL_GPL(leave_mm);
33676diff --git a/arch/x86/mm/uderef_64.c b/arch/x86/mm/uderef_64.c
33677new file mode 100644
33678index 0000000..dace51c
33679--- /dev/null
33680+++ b/arch/x86/mm/uderef_64.c
33681@@ -0,0 +1,37 @@
33682+#include <linux/mm.h>
33683+#include <asm/pgtable.h>
33684+#include <asm/uaccess.h>
33685+
33686+#ifdef CONFIG_PAX_MEMORY_UDEREF
33687+/* PaX: due to the special call convention these functions must
33688+ * - remain leaf functions under all configurations,
33689+ * - never be called directly, only dereferenced from the wrappers.
33690+ */
33691+void __pax_open_userland(void)
33692+{
33693+ unsigned int cpu;
33694+
33695+ if (unlikely(!segment_eq(get_fs(), USER_DS)))
33696+ return;
33697+
33698+ cpu = raw_get_cpu();
33699+ BUG_ON((read_cr3() & ~PAGE_MASK) != PCID_KERNEL);
33700+ write_cr3(__pa(get_cpu_pgd(cpu, user)) | PCID_USER | PCID_NOFLUSH);
33701+ raw_put_cpu_no_resched();
33702+}
33703+EXPORT_SYMBOL(__pax_open_userland);
33704+
33705+void __pax_close_userland(void)
33706+{
33707+ unsigned int cpu;
33708+
33709+ if (unlikely(!segment_eq(get_fs(), USER_DS)))
33710+ return;
33711+
33712+ cpu = raw_get_cpu();
33713+ BUG_ON((read_cr3() & ~PAGE_MASK) != PCID_USER);
33714+ write_cr3(__pa(get_cpu_pgd(cpu, kernel)) | PCID_KERNEL | PCID_NOFLUSH);
33715+ raw_put_cpu_no_resched();
33716+}
33717+EXPORT_SYMBOL(__pax_close_userland);
33718+#endif
33719diff --git a/arch/x86/net/bpf_jit.S b/arch/x86/net/bpf_jit.S
33720index 0149575..f746de8 100644
33721--- a/arch/x86/net/bpf_jit.S
33722+++ b/arch/x86/net/bpf_jit.S
33723@@ -9,6 +9,7 @@
33724 */
33725 #include <linux/linkage.h>
33726 #include <asm/dwarf2.h>
33727+#include <asm/alternative-asm.h>
33728
33729 /*
33730 * Calling convention :
33731@@ -35,6 +36,7 @@ sk_load_word_positive_offset:
33732 jle bpf_slow_path_word
33733 mov (SKBDATA,%rsi),%eax
33734 bswap %eax /* ntohl() */
33735+ pax_force_retaddr
33736 ret
33737
33738 sk_load_half:
33739@@ -52,6 +54,7 @@ sk_load_half_positive_offset:
33740 jle bpf_slow_path_half
33741 movzwl (SKBDATA,%rsi),%eax
33742 rol $8,%ax # ntohs()
33743+ pax_force_retaddr
33744 ret
33745
33746 sk_load_byte:
33747@@ -66,6 +69,7 @@ sk_load_byte_positive_offset:
33748 cmp %esi,%r9d /* if (offset >= hlen) goto bpf_slow_path_byte */
33749 jle bpf_slow_path_byte
33750 movzbl (SKBDATA,%rsi),%eax
33751+ pax_force_retaddr
33752 ret
33753
33754 /**
33755@@ -87,6 +91,7 @@ sk_load_byte_msh_positive_offset:
33756 movzbl (SKBDATA,%rsi),%ebx
33757 and $15,%bl
33758 shl $2,%bl
33759+ pax_force_retaddr
33760 ret
33761
33762 /* rsi contains offset and can be scratched */
33763@@ -109,6 +114,7 @@ bpf_slow_path_word:
33764 js bpf_error
33765 mov -12(%rbp),%eax
33766 bswap %eax
33767+ pax_force_retaddr
33768 ret
33769
33770 bpf_slow_path_half:
33771@@ -117,12 +123,14 @@ bpf_slow_path_half:
33772 mov -12(%rbp),%ax
33773 rol $8,%ax
33774 movzwl %ax,%eax
33775+ pax_force_retaddr
33776 ret
33777
33778 bpf_slow_path_byte:
33779 bpf_slow_path_common(1)
33780 js bpf_error
33781 movzbl -12(%rbp),%eax
33782+ pax_force_retaddr
33783 ret
33784
33785 bpf_slow_path_byte_msh:
33786@@ -133,6 +141,7 @@ bpf_slow_path_byte_msh:
33787 and $15,%al
33788 shl $2,%al
33789 xchg %eax,%ebx
33790+ pax_force_retaddr
33791 ret
33792
33793 #define sk_negative_common(SIZE) \
33794@@ -157,6 +166,7 @@ sk_load_word_negative_offset:
33795 sk_negative_common(4)
33796 mov (%rax), %eax
33797 bswap %eax
33798+ pax_force_retaddr
33799 ret
33800
33801 bpf_slow_path_half_neg:
33802@@ -168,6 +178,7 @@ sk_load_half_negative_offset:
33803 mov (%rax),%ax
33804 rol $8,%ax
33805 movzwl %ax,%eax
33806+ pax_force_retaddr
33807 ret
33808
33809 bpf_slow_path_byte_neg:
33810@@ -177,6 +188,7 @@ sk_load_byte_negative_offset:
33811 .globl sk_load_byte_negative_offset
33812 sk_negative_common(1)
33813 movzbl (%rax), %eax
33814+ pax_force_retaddr
33815 ret
33816
33817 bpf_slow_path_byte_msh_neg:
33818@@ -190,6 +202,7 @@ sk_load_byte_msh_negative_offset:
33819 and $15,%al
33820 shl $2,%al
33821 xchg %eax,%ebx
33822+ pax_force_retaddr
33823 ret
33824
33825 bpf_error:
33826@@ -197,4 +210,5 @@ bpf_error:
33827 xor %eax,%eax
33828 mov -8(%rbp),%rbx
33829 leaveq
33830+ pax_force_retaddr
33831 ret
33832diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c
33833index 6d5663a..f1ec380 100644
33834--- a/arch/x86/net/bpf_jit_comp.c
33835+++ b/arch/x86/net/bpf_jit_comp.c
33836@@ -50,13 +50,90 @@ static inline u8 *emit_code(u8 *ptr, u32 bytes, unsigned int len)
33837 return ptr + len;
33838 }
33839
33840+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
33841+#define MAX_INSTR_CODE_SIZE 96
33842+#else
33843+#define MAX_INSTR_CODE_SIZE 64
33844+#endif
33845+
33846 #define EMIT(bytes, len) do { prog = emit_code(prog, bytes, len); } while (0)
33847
33848 #define EMIT1(b1) EMIT(b1, 1)
33849 #define EMIT2(b1, b2) EMIT((b1) + ((b2) << 8), 2)
33850 #define EMIT3(b1, b2, b3) EMIT((b1) + ((b2) << 8) + ((b3) << 16), 3)
33851 #define EMIT4(b1, b2, b3, b4) EMIT((b1) + ((b2) << 8) + ((b3) << 16) + ((b4) << 24), 4)
33852+
33853+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
33854+/* original constant will appear in ecx */
33855+#define DILUTE_CONST_SEQUENCE(_off, _key) \
33856+do { \
33857+ /* mov ecx, randkey */ \
33858+ EMIT1(0xb9); \
33859+ EMIT(_key, 4); \
33860+ /* xor ecx, randkey ^ off */ \
33861+ EMIT2(0x81, 0xf1); \
33862+ EMIT((_key) ^ (_off), 4); \
33863+} while (0)
33864+
33865+#define EMIT1_off32(b1, _off) \
33866+do { \
33867+ switch (b1) { \
33868+ case 0x05: /* add eax, imm32 */ \
33869+ case 0x2d: /* sub eax, imm32 */ \
33870+ case 0x25: /* and eax, imm32 */ \
33871+ case 0x0d: /* or eax, imm32 */ \
33872+ case 0xb8: /* mov eax, imm32 */ \
33873+ case 0x35: /* xor eax, imm32 */ \
33874+ case 0x3d: /* cmp eax, imm32 */ \
33875+ case 0xa9: /* test eax, imm32 */ \
33876+ DILUTE_CONST_SEQUENCE(_off, randkey); \
33877+ EMIT2((b1) - 4, 0xc8); /* convert imm instruction to eax, ecx */\
33878+ break; \
33879+ case 0xbb: /* mov ebx, imm32 */ \
33880+ DILUTE_CONST_SEQUENCE(_off, randkey); \
33881+ /* mov ebx, ecx */ \
33882+ EMIT2(0x89, 0xcb); \
33883+ break; \
33884+ case 0xbe: /* mov esi, imm32 */ \
33885+ DILUTE_CONST_SEQUENCE(_off, randkey); \
33886+ /* mov esi, ecx */ \
33887+ EMIT2(0x89, 0xce); \
33888+ break; \
33889+ case 0xe8: /* call rel imm32, always to known funcs */ \
33890+ EMIT1(b1); \
33891+ EMIT(_off, 4); \
33892+ break; \
33893+ case 0xe9: /* jmp rel imm32 */ \
33894+ EMIT1(b1); \
33895+ EMIT(_off, 4); \
33896+ /* prevent fall-through, we're not called if off = 0 */ \
33897+ EMIT(0xcccccccc, 4); \
33898+ EMIT(0xcccccccc, 4); \
33899+ break; \
33900+ default: \
33901+ BUILD_BUG(); \
33902+ } \
33903+} while (0)
33904+
33905+#define EMIT2_off32(b1, b2, _off) \
33906+do { \
33907+ if ((b1) == 0x8d && (b2) == 0xb3) { /* lea esi, [rbx+imm32] */ \
33908+ EMIT2(0x8d, 0xb3); /* lea esi, [rbx+randkey] */ \
33909+ EMIT(randkey, 4); \
33910+ EMIT2(0x8d, 0xb6); /* lea esi, [esi+off-randkey] */ \
33911+ EMIT((_off) - randkey, 4); \
33912+ } else if ((b1) == 0x69 && (b2) == 0xc0) { /* imul eax, imm32 */\
33913+ DILUTE_CONST_SEQUENCE(_off, randkey); \
33914+ /* imul eax, ecx */ \
33915+ EMIT3(0x0f, 0xaf, 0xc1); \
33916+ } else { \
33917+ BUILD_BUG(); \
33918+ } \
33919+} while (0)
33920+#else
33921 #define EMIT1_off32(b1, off) do { EMIT1(b1); EMIT(off, 4);} while (0)
33922+#define EMIT2_off32(b1, b2, off) do { EMIT2(b1, b2); EMIT(off, 4);} while (0)
33923+#endif
33924
33925 #define CLEAR_A() EMIT2(0x31, 0xc0) /* xor %eax,%eax */
33926 #define CLEAR_X() EMIT2(0x31, 0xdb) /* xor %ebx,%ebx */
33927@@ -91,6 +168,24 @@ do { \
33928 #define X86_JBE 0x76
33929 #define X86_JA 0x77
33930
33931+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
33932+#define APPEND_FLOW_VERIFY() \
33933+do { \
33934+ /* mov ecx, randkey */ \
33935+ EMIT1(0xb9); \
33936+ EMIT(randkey, 4); \
33937+ /* cmp ecx, randkey */ \
33938+ EMIT2(0x81, 0xf9); \
33939+ EMIT(randkey, 4); \
33940+ /* jz after 8 int 3s */ \
33941+ EMIT2(0x74, 0x08); \
33942+ EMIT(0xcccccccc, 4); \
33943+ EMIT(0xcccccccc, 4); \
33944+} while (0)
33945+#else
33946+#define APPEND_FLOW_VERIFY() do { } while (0)
33947+#endif
33948+
33949 #define EMIT_COND_JMP(op, offset) \
33950 do { \
33951 if (is_near(offset)) \
33952@@ -98,6 +193,7 @@ do { \
33953 else { \
33954 EMIT2(0x0f, op + 0x10); \
33955 EMIT(offset, 4); /* jxx .+off32 */ \
33956+ APPEND_FLOW_VERIFY(); \
33957 } \
33958 } while (0)
33959
33960@@ -145,55 +241,54 @@ static int pkt_type_offset(void)
33961 return -1;
33962 }
33963
33964-struct bpf_binary_header {
33965- unsigned int pages;
33966- /* Note : for security reasons, bpf code will follow a randomly
33967- * sized amount of int3 instructions
33968- */
33969- u8 image[];
33970-};
33971-
33972-static struct bpf_binary_header *bpf_alloc_binary(unsigned int proglen,
33973+/* Note : for security reasons, bpf code will follow a randomly
33974+ * sized amount of int3 instructions
33975+ */
33976+static u8 *bpf_alloc_binary(unsigned int proglen,
33977 u8 **image_ptr)
33978 {
33979 unsigned int sz, hole;
33980- struct bpf_binary_header *header;
33981+ u8 *header;
33982
33983 /* Most of BPF filters are really small,
33984 * but if some of them fill a page, allow at least
33985 * 128 extra bytes to insert a random section of int3
33986 */
33987- sz = round_up(proglen + sizeof(*header) + 128, PAGE_SIZE);
33988- header = module_alloc(sz);
33989+ sz = round_up(proglen + 128, PAGE_SIZE);
33990+ header = module_alloc_exec(sz);
33991 if (!header)
33992 return NULL;
33993
33994+ pax_open_kernel();
33995 memset(header, 0xcc, sz); /* fill whole space with int3 instructions */
33996+ pax_close_kernel();
33997
33998- header->pages = sz / PAGE_SIZE;
33999- hole = min(sz - (proglen + sizeof(*header)), PAGE_SIZE - sizeof(*header));
34000+ hole = PAGE_SIZE - (proglen & ~PAGE_MASK);
34001
34002 /* insert a random number of int3 instructions before BPF code */
34003- *image_ptr = &header->image[prandom_u32() % hole];
34004+ *image_ptr = &header[prandom_u32() % hole];
34005 return header;
34006 }
34007
34008 void bpf_jit_compile(struct sk_filter *fp)
34009 {
34010- u8 temp[64];
34011+ u8 temp[MAX_INSTR_CODE_SIZE];
34012 u8 *prog;
34013 unsigned int proglen, oldproglen = 0;
34014 int ilen, i;
34015 int t_offset, f_offset;
34016 u8 t_op, f_op, seen = 0, pass;
34017 u8 *image = NULL;
34018- struct bpf_binary_header *header = NULL;
34019+ u8 *header = NULL;
34020 u8 *func;
34021 int pc_ret0 = -1; /* bpf index of first RET #0 instruction (if any) */
34022 unsigned int cleanup_addr; /* epilogue code offset */
34023 unsigned int *addrs;
34024 const struct sock_filter *filter = fp->insns;
34025 int flen = fp->len;
34026+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
34027+ unsigned int randkey;
34028+#endif
34029
34030 if (!bpf_jit_enable)
34031 return;
34032@@ -203,10 +298,10 @@ void bpf_jit_compile(struct sk_filter *fp)
34033 return;
34034
34035 /* Before first pass, make a rough estimation of addrs[]
34036- * each bpf instruction is translated to less than 64 bytes
34037+ * each bpf instruction is translated to less than MAX_INSTR_CODE_SIZE bytes
34038 */
34039 for (proglen = 0, i = 0; i < flen; i++) {
34040- proglen += 64;
34041+ proglen += MAX_INSTR_CODE_SIZE;
34042 addrs[i] = proglen;
34043 }
34044 cleanup_addr = proglen; /* epilogue address */
34045@@ -285,6 +380,10 @@ void bpf_jit_compile(struct sk_filter *fp)
34046 for (i = 0; i < flen; i++) {
34047 unsigned int K = filter[i].k;
34048
34049+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
34050+ randkey = prandom_u32();
34051+#endif
34052+
34053 switch (filter[i].code) {
34054 case BPF_S_ALU_ADD_X: /* A += X; */
34055 seen |= SEEN_XREG;
34056@@ -317,10 +416,8 @@ void bpf_jit_compile(struct sk_filter *fp)
34057 case BPF_S_ALU_MUL_K: /* A *= K */
34058 if (is_imm8(K))
34059 EMIT3(0x6b, 0xc0, K); /* imul imm8,%eax,%eax */
34060- else {
34061- EMIT2(0x69, 0xc0); /* imul imm32,%eax */
34062- EMIT(K, 4);
34063- }
34064+ else
34065+ EMIT2_off32(0x69, 0xc0, K); /* imul imm32,%eax */
34066 break;
34067 case BPF_S_ALU_DIV_X: /* A /= X; */
34068 seen |= SEEN_XREG;
34069@@ -364,7 +461,11 @@ void bpf_jit_compile(struct sk_filter *fp)
34070 break;
34071 }
34072 EMIT2(0x31, 0xd2); /* xor %edx,%edx */
34073+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
34074+ DILUTE_CONST_SEQUENCE(K, randkey);
34075+#else
34076 EMIT1(0xb9);EMIT(K, 4); /* mov imm32,%ecx */
34077+#endif
34078 EMIT2(0xf7, 0xf1); /* div %ecx */
34079 EMIT2(0x89, 0xd0); /* mov %edx,%eax */
34080 break;
34081@@ -372,7 +473,11 @@ void bpf_jit_compile(struct sk_filter *fp)
34082 if (K == 1)
34083 break;
34084 EMIT2(0x31, 0xd2); /* xor %edx,%edx */
34085+#ifdef CONFIG_GRKERNSEC_JIT_HARDEN
34086+ DILUTE_CONST_SEQUENCE(K, randkey);
34087+#else
34088 EMIT1(0xb9);EMIT(K, 4); /* mov imm32,%ecx */
34089+#endif
34090 EMIT2(0xf7, 0xf1); /* div %ecx */
34091 break;
34092 case BPF_S_ALU_AND_X:
34093@@ -643,8 +748,7 @@ common_load_ind: seen |= SEEN_DATAREF | SEEN_XREG;
34094 if (is_imm8(K)) {
34095 EMIT3(0x8d, 0x73, K); /* lea imm8(%rbx), %esi */
34096 } else {
34097- EMIT2(0x8d, 0xb3); /* lea imm32(%rbx),%esi */
34098- EMIT(K, 4);
34099+ EMIT2_off32(0x8d, 0xb3, K); /* lea imm32(%rbx),%esi */
34100 }
34101 } else {
34102 EMIT2(0x89,0xde); /* mov %ebx,%esi */
34103@@ -734,10 +838,12 @@ cond_branch: f_offset = addrs[i + filter[i].jf] - addrs[i];
34104 if (unlikely(proglen + ilen > oldproglen)) {
34105 pr_err("bpb_jit_compile fatal error\n");
34106 kfree(addrs);
34107- module_free(NULL, header);
34108+ module_free_exec(NULL, image);
34109 return;
34110 }
34111+ pax_open_kernel();
34112 memcpy(image + proglen, temp, ilen);
34113+ pax_close_kernel();
34114 }
34115 proglen += ilen;
34116 addrs[i] = proglen;
34117@@ -770,7 +876,6 @@ cond_branch: f_offset = addrs[i + filter[i].jf] - addrs[i];
34118
34119 if (image) {
34120 bpf_flush_icache(header, image + proglen);
34121- set_memory_ro((unsigned long)header, header->pages);
34122 fp->bpf_func = (void *)image;
34123 fp->jited = 1;
34124 }
34125@@ -783,10 +888,9 @@ static void bpf_jit_free_deferred(struct work_struct *work)
34126 {
34127 struct sk_filter *fp = container_of(work, struct sk_filter, work);
34128 unsigned long addr = (unsigned long)fp->bpf_func & PAGE_MASK;
34129- struct bpf_binary_header *header = (void *)addr;
34130
34131- set_memory_rw(addr, header->pages);
34132- module_free(NULL, header);
34133+ set_memory_rw(addr, 1);
34134+ module_free_exec(NULL, (void *)addr);
34135 kfree(fp);
34136 }
34137
34138diff --git a/arch/x86/oprofile/backtrace.c b/arch/x86/oprofile/backtrace.c
34139index 5d04be5..2beeaa2 100644
34140--- a/arch/x86/oprofile/backtrace.c
34141+++ b/arch/x86/oprofile/backtrace.c
34142@@ -46,11 +46,11 @@ dump_user_backtrace_32(struct stack_frame_ia32 *head)
34143 struct stack_frame_ia32 *fp;
34144 unsigned long bytes;
34145
34146- bytes = copy_from_user_nmi(bufhead, head, sizeof(bufhead));
34147+ bytes = copy_from_user_nmi(bufhead, (const char __force_user *)head, sizeof(bufhead));
34148 if (bytes != 0)
34149 return NULL;
34150
34151- fp = (struct stack_frame_ia32 *) compat_ptr(bufhead[0].next_frame);
34152+ fp = (struct stack_frame_ia32 __force_kernel *) compat_ptr(bufhead[0].next_frame);
34153
34154 oprofile_add_trace(bufhead[0].return_address);
34155
34156@@ -92,7 +92,7 @@ static struct stack_frame *dump_user_backtrace(struct stack_frame *head)
34157 struct stack_frame bufhead[2];
34158 unsigned long bytes;
34159
34160- bytes = copy_from_user_nmi(bufhead, head, sizeof(bufhead));
34161+ bytes = copy_from_user_nmi(bufhead, (const char __force_user *)head, sizeof(bufhead));
34162 if (bytes != 0)
34163 return NULL;
34164
34165@@ -111,7 +111,7 @@ x86_backtrace(struct pt_regs * const regs, unsigned int depth)
34166 {
34167 struct stack_frame *head = (struct stack_frame *)frame_pointer(regs);
34168
34169- if (!user_mode_vm(regs)) {
34170+ if (!user_mode(regs)) {
34171 unsigned long stack = kernel_stack_pointer(regs);
34172 if (depth)
34173 dump_trace(NULL, regs, (unsigned long *)stack, 0,
34174diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
34175index 379e8bd..6386e09 100644
34176--- a/arch/x86/oprofile/nmi_int.c
34177+++ b/arch/x86/oprofile/nmi_int.c
34178@@ -23,6 +23,7 @@
34179 #include <asm/nmi.h>
34180 #include <asm/msr.h>
34181 #include <asm/apic.h>
34182+#include <asm/pgtable.h>
34183
34184 #include "op_counter.h"
34185 #include "op_x86_model.h"
34186@@ -785,8 +786,11 @@ int __init op_nmi_init(struct oprofile_operations *ops)
34187 if (ret)
34188 return ret;
34189
34190- if (!model->num_virt_counters)
34191- model->num_virt_counters = model->num_counters;
34192+ if (!model->num_virt_counters) {
34193+ pax_open_kernel();
34194+ *(unsigned int *)&model->num_virt_counters = model->num_counters;
34195+ pax_close_kernel();
34196+ }
34197
34198 mux_init(ops);
34199
34200diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c
34201index 50d86c0..7985318 100644
34202--- a/arch/x86/oprofile/op_model_amd.c
34203+++ b/arch/x86/oprofile/op_model_amd.c
34204@@ -519,9 +519,11 @@ static int op_amd_init(struct oprofile_operations *ops)
34205 num_counters = AMD64_NUM_COUNTERS;
34206 }
34207
34208- op_amd_spec.num_counters = num_counters;
34209- op_amd_spec.num_controls = num_counters;
34210- op_amd_spec.num_virt_counters = max(num_counters, NUM_VIRT_COUNTERS);
34211+ pax_open_kernel();
34212+ *(unsigned int *)&op_amd_spec.num_counters = num_counters;
34213+ *(unsigned int *)&op_amd_spec.num_controls = num_counters;
34214+ *(unsigned int *)&op_amd_spec.num_virt_counters = max(num_counters, NUM_VIRT_COUNTERS);
34215+ pax_close_kernel();
34216
34217 return 0;
34218 }
34219diff --git a/arch/x86/oprofile/op_model_ppro.c b/arch/x86/oprofile/op_model_ppro.c
34220index d90528e..0127e2b 100644
34221--- a/arch/x86/oprofile/op_model_ppro.c
34222+++ b/arch/x86/oprofile/op_model_ppro.c
34223@@ -19,6 +19,7 @@
34224 #include <asm/msr.h>
34225 #include <asm/apic.h>
34226 #include <asm/nmi.h>
34227+#include <asm/pgtable.h>
34228
34229 #include "op_x86_model.h"
34230 #include "op_counter.h"
34231@@ -221,8 +222,10 @@ static void arch_perfmon_setup_counters(void)
34232
34233 num_counters = min((int)eax.split.num_counters, OP_MAX_COUNTER);
34234
34235- op_arch_perfmon_spec.num_counters = num_counters;
34236- op_arch_perfmon_spec.num_controls = num_counters;
34237+ pax_open_kernel();
34238+ *(unsigned int *)&op_arch_perfmon_spec.num_counters = num_counters;
34239+ *(unsigned int *)&op_arch_perfmon_spec.num_controls = num_counters;
34240+ pax_close_kernel();
34241 }
34242
34243 static int arch_perfmon_init(struct oprofile_operations *ignore)
34244diff --git a/arch/x86/oprofile/op_x86_model.h b/arch/x86/oprofile/op_x86_model.h
34245index 71e8a67..6a313bb 100644
34246--- a/arch/x86/oprofile/op_x86_model.h
34247+++ b/arch/x86/oprofile/op_x86_model.h
34248@@ -52,7 +52,7 @@ struct op_x86_model_spec {
34249 void (*switch_ctrl)(struct op_x86_model_spec const *model,
34250 struct op_msrs const * const msrs);
34251 #endif
34252-};
34253+} __do_const;
34254
34255 struct op_counter_config;
34256
34257diff --git a/arch/x86/pci/intel_mid_pci.c b/arch/x86/pci/intel_mid_pci.c
34258index 84b9d67..260e5ff 100644
34259--- a/arch/x86/pci/intel_mid_pci.c
34260+++ b/arch/x86/pci/intel_mid_pci.c
34261@@ -245,7 +245,7 @@ int __init intel_mid_pci_init(void)
34262 pr_info("Intel MID platform detected, using MID PCI ops\n");
34263 pci_mmcfg_late_init();
34264 pcibios_enable_irq = intel_mid_pci_irq_enable;
34265- pci_root_ops = intel_mid_pci_ops;
34266+ memcpy((void *)&pci_root_ops, &intel_mid_pci_ops, sizeof pci_root_ops);
34267 pci_soc_mode = 1;
34268 /* Continue with standard init */
34269 return 1;
34270diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c
34271index 84112f5..6334d60 100644
34272--- a/arch/x86/pci/irq.c
34273+++ b/arch/x86/pci/irq.c
34274@@ -50,7 +50,7 @@ struct irq_router {
34275 struct irq_router_handler {
34276 u16 vendor;
34277 int (*probe)(struct irq_router *r, struct pci_dev *router, u16 device);
34278-};
34279+} __do_const;
34280
34281 int (*pcibios_enable_irq)(struct pci_dev *dev) = pirq_enable_irq;
34282 void (*pcibios_disable_irq)(struct pci_dev *dev) = NULL;
34283@@ -790,7 +790,7 @@ static __init int pico_router_probe(struct irq_router *r, struct pci_dev *router
34284 return 0;
34285 }
34286
34287-static __initdata struct irq_router_handler pirq_routers[] = {
34288+static __initconst const struct irq_router_handler pirq_routers[] = {
34289 { PCI_VENDOR_ID_INTEL, intel_router_probe },
34290 { PCI_VENDOR_ID_AL, ali_router_probe },
34291 { PCI_VENDOR_ID_ITE, ite_router_probe },
34292@@ -817,7 +817,7 @@ static struct pci_dev *pirq_router_dev;
34293 static void __init pirq_find_router(struct irq_router *r)
34294 {
34295 struct irq_routing_table *rt = pirq_table;
34296- struct irq_router_handler *h;
34297+ const struct irq_router_handler *h;
34298
34299 #ifdef CONFIG_PCI_BIOS
34300 if (!rt->signature) {
34301@@ -1090,7 +1090,7 @@ static int __init fix_acer_tm360_irqrouting(const struct dmi_system_id *d)
34302 return 0;
34303 }
34304
34305-static struct dmi_system_id __initdata pciirq_dmi_table[] = {
34306+static const struct dmi_system_id __initconst pciirq_dmi_table[] = {
34307 {
34308 .callback = fix_broken_hp_bios_irq9,
34309 .ident = "HP Pavilion N5400 Series Laptop",
34310diff --git a/arch/x86/pci/pcbios.c b/arch/x86/pci/pcbios.c
34311index c77b24a..c979855 100644
34312--- a/arch/x86/pci/pcbios.c
34313+++ b/arch/x86/pci/pcbios.c
34314@@ -79,7 +79,7 @@ union bios32 {
34315 static struct {
34316 unsigned long address;
34317 unsigned short segment;
34318-} bios32_indirect = { 0, __KERNEL_CS };
34319+} bios32_indirect __read_only = { 0, __PCIBIOS_CS };
34320
34321 /*
34322 * Returns the entry point for the given service, NULL on error
34323@@ -92,37 +92,80 @@ static unsigned long bios32_service(unsigned long service)
34324 unsigned long length; /* %ecx */
34325 unsigned long entry; /* %edx */
34326 unsigned long flags;
34327+ struct desc_struct d, *gdt;
34328
34329 local_irq_save(flags);
34330- __asm__("lcall *(%%edi); cld"
34331+
34332+ gdt = get_cpu_gdt_table(smp_processor_id());
34333+
34334+ pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x9B, 0xC);
34335+ write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S);
34336+ pack_descriptor(&d, 0UL, 0xFFFFFUL, 0x93, 0xC);
34337+ write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S);
34338+
34339+ __asm__("movw %w7, %%ds; lcall *(%%edi); push %%ss; pop %%ds; cld"
34340 : "=a" (return_code),
34341 "=b" (address),
34342 "=c" (length),
34343 "=d" (entry)
34344 : "0" (service),
34345 "1" (0),
34346- "D" (&bios32_indirect));
34347+ "D" (&bios32_indirect),
34348+ "r"(__PCIBIOS_DS)
34349+ : "memory");
34350+
34351+ pax_open_kernel();
34352+ gdt[GDT_ENTRY_PCIBIOS_CS].a = 0;
34353+ gdt[GDT_ENTRY_PCIBIOS_CS].b = 0;
34354+ gdt[GDT_ENTRY_PCIBIOS_DS].a = 0;
34355+ gdt[GDT_ENTRY_PCIBIOS_DS].b = 0;
34356+ pax_close_kernel();
34357+
34358 local_irq_restore(flags);
34359
34360 switch (return_code) {
34361- case 0:
34362- return address + entry;
34363- case 0x80: /* Not present */
34364- printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service);
34365- return 0;
34366- default: /* Shouldn't happen */
34367- printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n",
34368- service, return_code);
34369+ case 0: {
34370+ int cpu;
34371+ unsigned char flags;
34372+
34373+ printk(KERN_INFO "bios32_service: base:%08lx length:%08lx entry:%08lx\n", address, length, entry);
34374+ if (address >= 0xFFFF0 || length > 0x100000 - address || length <= entry) {
34375+ printk(KERN_WARNING "bios32_service: not valid\n");
34376 return 0;
34377+ }
34378+ address = address + PAGE_OFFSET;
34379+ length += 16UL; /* some BIOSs underreport this... */
34380+ flags = 4;
34381+ if (length >= 64*1024*1024) {
34382+ length >>= PAGE_SHIFT;
34383+ flags |= 8;
34384+ }
34385+
34386+ for (cpu = 0; cpu < nr_cpu_ids; cpu++) {
34387+ gdt = get_cpu_gdt_table(cpu);
34388+ pack_descriptor(&d, address, length, 0x9b, flags);
34389+ write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_CS, &d, DESCTYPE_S);
34390+ pack_descriptor(&d, address, length, 0x93, flags);
34391+ write_gdt_entry(gdt, GDT_ENTRY_PCIBIOS_DS, &d, DESCTYPE_S);
34392+ }
34393+ return entry;
34394+ }
34395+ case 0x80: /* Not present */
34396+ printk(KERN_WARNING "bios32_service(0x%lx): not present\n", service);
34397+ return 0;
34398+ default: /* Shouldn't happen */
34399+ printk(KERN_WARNING "bios32_service(0x%lx): returned 0x%x -- BIOS bug!\n",
34400+ service, return_code);
34401+ return 0;
34402 }
34403 }
34404
34405 static struct {
34406 unsigned long address;
34407 unsigned short segment;
34408-} pci_indirect = { 0, __KERNEL_CS };
34409+} pci_indirect __read_only = { 0, __PCIBIOS_CS };
34410
34411-static int pci_bios_present;
34412+static int pci_bios_present __read_only;
34413
34414 static int check_pcibios(void)
34415 {
34416@@ -131,11 +174,13 @@ static int check_pcibios(void)
34417 unsigned long flags, pcibios_entry;
34418
34419 if ((pcibios_entry = bios32_service(PCI_SERVICE))) {
34420- pci_indirect.address = pcibios_entry + PAGE_OFFSET;
34421+ pci_indirect.address = pcibios_entry;
34422
34423 local_irq_save(flags);
34424- __asm__(
34425- "lcall *(%%edi); cld\n\t"
34426+ __asm__("movw %w6, %%ds\n\t"
34427+ "lcall *%%ss:(%%edi); cld\n\t"
34428+ "push %%ss\n\t"
34429+ "pop %%ds\n\t"
34430 "jc 1f\n\t"
34431 "xor %%ah, %%ah\n"
34432 "1:"
34433@@ -144,7 +189,8 @@ static int check_pcibios(void)
34434 "=b" (ebx),
34435 "=c" (ecx)
34436 : "1" (PCIBIOS_PCI_BIOS_PRESENT),
34437- "D" (&pci_indirect)
34438+ "D" (&pci_indirect),
34439+ "r" (__PCIBIOS_DS)
34440 : "memory");
34441 local_irq_restore(flags);
34442
34443@@ -189,7 +235,10 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
34444
34445 switch (len) {
34446 case 1:
34447- __asm__("lcall *(%%esi); cld\n\t"
34448+ __asm__("movw %w6, %%ds\n\t"
34449+ "lcall *%%ss:(%%esi); cld\n\t"
34450+ "push %%ss\n\t"
34451+ "pop %%ds\n\t"
34452 "jc 1f\n\t"
34453 "xor %%ah, %%ah\n"
34454 "1:"
34455@@ -198,7 +247,8 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
34456 : "1" (PCIBIOS_READ_CONFIG_BYTE),
34457 "b" (bx),
34458 "D" ((long)reg),
34459- "S" (&pci_indirect));
34460+ "S" (&pci_indirect),
34461+ "r" (__PCIBIOS_DS));
34462 /*
34463 * Zero-extend the result beyond 8 bits, do not trust the
34464 * BIOS having done it:
34465@@ -206,7 +256,10 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
34466 *value &= 0xff;
34467 break;
34468 case 2:
34469- __asm__("lcall *(%%esi); cld\n\t"
34470+ __asm__("movw %w6, %%ds\n\t"
34471+ "lcall *%%ss:(%%esi); cld\n\t"
34472+ "push %%ss\n\t"
34473+ "pop %%ds\n\t"
34474 "jc 1f\n\t"
34475 "xor %%ah, %%ah\n"
34476 "1:"
34477@@ -215,7 +268,8 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
34478 : "1" (PCIBIOS_READ_CONFIG_WORD),
34479 "b" (bx),
34480 "D" ((long)reg),
34481- "S" (&pci_indirect));
34482+ "S" (&pci_indirect),
34483+ "r" (__PCIBIOS_DS));
34484 /*
34485 * Zero-extend the result beyond 16 bits, do not trust the
34486 * BIOS having done it:
34487@@ -223,7 +277,10 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
34488 *value &= 0xffff;
34489 break;
34490 case 4:
34491- __asm__("lcall *(%%esi); cld\n\t"
34492+ __asm__("movw %w6, %%ds\n\t"
34493+ "lcall *%%ss:(%%esi); cld\n\t"
34494+ "push %%ss\n\t"
34495+ "pop %%ds\n\t"
34496 "jc 1f\n\t"
34497 "xor %%ah, %%ah\n"
34498 "1:"
34499@@ -232,7 +289,8 @@ static int pci_bios_read(unsigned int seg, unsigned int bus,
34500 : "1" (PCIBIOS_READ_CONFIG_DWORD),
34501 "b" (bx),
34502 "D" ((long)reg),
34503- "S" (&pci_indirect));
34504+ "S" (&pci_indirect),
34505+ "r" (__PCIBIOS_DS));
34506 break;
34507 }
34508
34509@@ -256,7 +314,10 @@ static int pci_bios_write(unsigned int seg, unsigned int bus,
34510
34511 switch (len) {
34512 case 1:
34513- __asm__("lcall *(%%esi); cld\n\t"
34514+ __asm__("movw %w6, %%ds\n\t"
34515+ "lcall *%%ss:(%%esi); cld\n\t"
34516+ "push %%ss\n\t"
34517+ "pop %%ds\n\t"
34518 "jc 1f\n\t"
34519 "xor %%ah, %%ah\n"
34520 "1:"
34521@@ -265,10 +326,14 @@ static int pci_bios_write(unsigned int seg, unsigned int bus,
34522 "c" (value),
34523 "b" (bx),
34524 "D" ((long)reg),
34525- "S" (&pci_indirect));
34526+ "S" (&pci_indirect),
34527+ "r" (__PCIBIOS_DS));
34528 break;
34529 case 2:
34530- __asm__("lcall *(%%esi); cld\n\t"
34531+ __asm__("movw %w6, %%ds\n\t"
34532+ "lcall *%%ss:(%%esi); cld\n\t"
34533+ "push %%ss\n\t"
34534+ "pop %%ds\n\t"
34535 "jc 1f\n\t"
34536 "xor %%ah, %%ah\n"
34537 "1:"
34538@@ -277,10 +342,14 @@ static int pci_bios_write(unsigned int seg, unsigned int bus,
34539 "c" (value),
34540 "b" (bx),
34541 "D" ((long)reg),
34542- "S" (&pci_indirect));
34543+ "S" (&pci_indirect),
34544+ "r" (__PCIBIOS_DS));
34545 break;
34546 case 4:
34547- __asm__("lcall *(%%esi); cld\n\t"
34548+ __asm__("movw %w6, %%ds\n\t"
34549+ "lcall *%%ss:(%%esi); cld\n\t"
34550+ "push %%ss\n\t"
34551+ "pop %%ds\n\t"
34552 "jc 1f\n\t"
34553 "xor %%ah, %%ah\n"
34554 "1:"
34555@@ -289,7 +358,8 @@ static int pci_bios_write(unsigned int seg, unsigned int bus,
34556 "c" (value),
34557 "b" (bx),
34558 "D" ((long)reg),
34559- "S" (&pci_indirect));
34560+ "S" (&pci_indirect),
34561+ "r" (__PCIBIOS_DS));
34562 break;
34563 }
34564
34565@@ -394,10 +464,13 @@ struct irq_routing_table * pcibios_get_irq_routing_table(void)
34566
34567 DBG("PCI: Fetching IRQ routing table... ");
34568 __asm__("push %%es\n\t"
34569+ "movw %w8, %%ds\n\t"
34570 "push %%ds\n\t"
34571 "pop %%es\n\t"
34572- "lcall *(%%esi); cld\n\t"
34573+ "lcall *%%ss:(%%esi); cld\n\t"
34574 "pop %%es\n\t"
34575+ "push %%ss\n\t"
34576+ "pop %%ds\n"
34577 "jc 1f\n\t"
34578 "xor %%ah, %%ah\n"
34579 "1:"
34580@@ -408,7 +481,8 @@ struct irq_routing_table * pcibios_get_irq_routing_table(void)
34581 "1" (0),
34582 "D" ((long) &opt),
34583 "S" (&pci_indirect),
34584- "m" (opt)
34585+ "m" (opt),
34586+ "r" (__PCIBIOS_DS)
34587 : "memory");
34588 DBG("OK ret=%d, size=%d, map=%x\n", ret, opt.size, map);
34589 if (ret & 0xff00)
34590@@ -432,7 +506,10 @@ int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq)
34591 {
34592 int ret;
34593
34594- __asm__("lcall *(%%esi); cld\n\t"
34595+ __asm__("movw %w5, %%ds\n\t"
34596+ "lcall *%%ss:(%%esi); cld\n\t"
34597+ "push %%ss\n\t"
34598+ "pop %%ds\n"
34599 "jc 1f\n\t"
34600 "xor %%ah, %%ah\n"
34601 "1:"
34602@@ -440,7 +517,8 @@ int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq)
34603 : "0" (PCIBIOS_SET_PCI_HW_INT),
34604 "b" ((dev->bus->number << 8) | dev->devfn),
34605 "c" ((irq << 8) | (pin + 10)),
34606- "S" (&pci_indirect));
34607+ "S" (&pci_indirect),
34608+ "r" (__PCIBIOS_DS));
34609 return !(ret & 0xff00);
34610 }
34611 EXPORT_SYMBOL(pcibios_set_irq_routing);
34612diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c
34613index 9ee3491..872192f 100644
34614--- a/arch/x86/platform/efi/efi_32.c
34615+++ b/arch/x86/platform/efi/efi_32.c
34616@@ -59,11 +59,22 @@ void efi_call_phys_prelog(void)
34617 {
34618 struct desc_ptr gdt_descr;
34619
34620+#ifdef CONFIG_PAX_KERNEXEC
34621+ struct desc_struct d;
34622+#endif
34623+
34624 local_irq_save(efi_rt_eflags);
34625
34626 load_cr3(initial_page_table);
34627 __flush_tlb_all();
34628
34629+#ifdef CONFIG_PAX_KERNEXEC
34630+ pack_descriptor(&d, 0, 0xFFFFF, 0x9B, 0xC);
34631+ write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_CS, &d, DESCTYPE_S);
34632+ pack_descriptor(&d, 0, 0xFFFFF, 0x93, 0xC);
34633+ write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_DS, &d, DESCTYPE_S);
34634+#endif
34635+
34636 gdt_descr.address = __pa(get_cpu_gdt_table(0));
34637 gdt_descr.size = GDT_SIZE - 1;
34638 load_gdt(&gdt_descr);
34639@@ -73,11 +84,24 @@ void efi_call_phys_epilog(void)
34640 {
34641 struct desc_ptr gdt_descr;
34642
34643+#ifdef CONFIG_PAX_KERNEXEC
34644+ struct desc_struct d;
34645+
34646+ memset(&d, 0, sizeof d);
34647+ write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_CS, &d, DESCTYPE_S);
34648+ write_gdt_entry(get_cpu_gdt_table(0), GDT_ENTRY_KERNEXEC_EFI_DS, &d, DESCTYPE_S);
34649+#endif
34650+
34651 gdt_descr.address = (unsigned long)get_cpu_gdt_table(0);
34652 gdt_descr.size = GDT_SIZE - 1;
34653 load_gdt(&gdt_descr);
34654
34655+#ifdef CONFIG_PAX_PER_CPU_PGD
34656+ load_cr3(get_cpu_pgd(smp_processor_id(), kernel));
34657+#else
34658 load_cr3(swapper_pg_dir);
34659+#endif
34660+
34661 __flush_tlb_all();
34662
34663 local_irq_restore(efi_rt_eflags);
34664diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
34665index 290d397..3906bcd 100644
34666--- a/arch/x86/platform/efi/efi_64.c
34667+++ b/arch/x86/platform/efi/efi_64.c
34668@@ -99,6 +99,11 @@ void __init efi_call_phys_prelog(void)
34669 vaddress = (unsigned long)__va(pgd * PGDIR_SIZE);
34670 set_pgd(pgd_offset_k(pgd * PGDIR_SIZE), *pgd_offset_k(vaddress));
34671 }
34672+
34673+#ifdef CONFIG_PAX_PER_CPU_PGD
34674+ load_cr3(swapper_pg_dir);
34675+#endif
34676+
34677 __flush_tlb_all();
34678 }
34679
34680@@ -116,6 +121,11 @@ void __init efi_call_phys_epilog(void)
34681 for (pgd = 0; pgd < n_pgds; pgd++)
34682 set_pgd(pgd_offset_k(pgd * PGDIR_SIZE), save_pgd[pgd]);
34683 kfree(save_pgd);
34684+
34685+#ifdef CONFIG_PAX_PER_CPU_PGD
34686+ load_cr3(get_cpu_pgd(smp_processor_id(), kernel));
34687+#endif
34688+
34689 __flush_tlb_all();
34690 local_irq_restore(efi_flags);
34691 early_code_mapping_set_exec(0);
34692diff --git a/arch/x86/platform/efi/efi_stub_32.S b/arch/x86/platform/efi/efi_stub_32.S
34693index fbe66e6..eae5e38 100644
34694--- a/arch/x86/platform/efi/efi_stub_32.S
34695+++ b/arch/x86/platform/efi/efi_stub_32.S
34696@@ -6,7 +6,9 @@
34697 */
34698
34699 #include <linux/linkage.h>
34700+#include <linux/init.h>
34701 #include <asm/page_types.h>
34702+#include <asm/segment.h>
34703
34704 /*
34705 * efi_call_phys(void *, ...) is a function with variable parameters.
34706@@ -20,7 +22,7 @@
34707 * service functions will comply with gcc calling convention, too.
34708 */
34709
34710-.text
34711+__INIT
34712 ENTRY(efi_call_phys)
34713 /*
34714 * 0. The function can only be called in Linux kernel. So CS has been
34715@@ -36,10 +38,24 @@ ENTRY(efi_call_phys)
34716 * The mapping of lower virtual memory has been created in prelog and
34717 * epilog.
34718 */
34719- movl $1f, %edx
34720- subl $__PAGE_OFFSET, %edx
34721- jmp *%edx
34722+#ifdef CONFIG_PAX_KERNEXEC
34723+ movl $(__KERNEXEC_EFI_DS), %edx
34724+ mov %edx, %ds
34725+ mov %edx, %es
34726+ mov %edx, %ss
34727+ addl $2f,(1f)
34728+ ljmp *(1f)
34729+
34730+__INITDATA
34731+1: .long __LOAD_PHYSICAL_ADDR, __KERNEXEC_EFI_CS
34732+.previous
34733+
34734+2:
34735+ subl $2b,(1b)
34736+#else
34737+ jmp 1f-__PAGE_OFFSET
34738 1:
34739+#endif
34740
34741 /*
34742 * 2. Now on the top of stack is the return
34743@@ -47,14 +63,8 @@ ENTRY(efi_call_phys)
34744 * parameter 2, ..., param n. To make things easy, we save the return
34745 * address of efi_call_phys in a global variable.
34746 */
34747- popl %edx
34748- movl %edx, saved_return_addr
34749- /* get the function pointer into ECX*/
34750- popl %ecx
34751- movl %ecx, efi_rt_function_ptr
34752- movl $2f, %edx
34753- subl $__PAGE_OFFSET, %edx
34754- pushl %edx
34755+ popl (saved_return_addr)
34756+ popl (efi_rt_function_ptr)
34757
34758 /*
34759 * 3. Clear PG bit in %CR0.
34760@@ -73,9 +83,8 @@ ENTRY(efi_call_phys)
34761 /*
34762 * 5. Call the physical function.
34763 */
34764- jmp *%ecx
34765+ call *(efi_rt_function_ptr-__PAGE_OFFSET)
34766
34767-2:
34768 /*
34769 * 6. After EFI runtime service returns, control will return to
34770 * following instruction. We'd better readjust stack pointer first.
34771@@ -88,35 +97,36 @@ ENTRY(efi_call_phys)
34772 movl %cr0, %edx
34773 orl $0x80000000, %edx
34774 movl %edx, %cr0
34775- jmp 1f
34776-1:
34777+
34778 /*
34779 * 8. Now restore the virtual mode from flat mode by
34780 * adding EIP with PAGE_OFFSET.
34781 */
34782- movl $1f, %edx
34783- jmp *%edx
34784+#ifdef CONFIG_PAX_KERNEXEC
34785+ movl $(__KERNEL_DS), %edx
34786+ mov %edx, %ds
34787+ mov %edx, %es
34788+ mov %edx, %ss
34789+ ljmp $(__KERNEL_CS),$1f
34790+#else
34791+ jmp 1f+__PAGE_OFFSET
34792+#endif
34793 1:
34794
34795 /*
34796 * 9. Balance the stack. And because EAX contain the return value,
34797 * we'd better not clobber it.
34798 */
34799- leal efi_rt_function_ptr, %edx
34800- movl (%edx), %ecx
34801- pushl %ecx
34802+ pushl (efi_rt_function_ptr)
34803
34804 /*
34805- * 10. Push the saved return address onto the stack and return.
34806+ * 10. Return to the saved return address.
34807 */
34808- leal saved_return_addr, %edx
34809- movl (%edx), %ecx
34810- pushl %ecx
34811- ret
34812+ jmpl *(saved_return_addr)
34813 ENDPROC(efi_call_phys)
34814 .previous
34815
34816-.data
34817+__INITDATA
34818 saved_return_addr:
34819 .long 0
34820 efi_rt_function_ptr:
34821diff --git a/arch/x86/platform/efi/efi_stub_64.S b/arch/x86/platform/efi/efi_stub_64.S
34822index e0984ef..a062dac 100644
34823--- a/arch/x86/platform/efi/efi_stub_64.S
34824+++ b/arch/x86/platform/efi/efi_stub_64.S
34825@@ -11,6 +11,7 @@
34826 #include <asm/msr.h>
34827 #include <asm/processor-flags.h>
34828 #include <asm/page_types.h>
34829+#include <asm/alternative-asm.h>
34830
34831 #define SAVE_XMM \
34832 mov %rsp, %rax; \
34833@@ -81,6 +82,7 @@ ENTRY(efi_call0)
34834 RESTORE_PGT
34835 addq $32, %rsp
34836 RESTORE_XMM
34837+ pax_force_retaddr 0, 1
34838 ret
34839 ENDPROC(efi_call0)
34840
34841@@ -93,6 +95,7 @@ ENTRY(efi_call1)
34842 RESTORE_PGT
34843 addq $32, %rsp
34844 RESTORE_XMM
34845+ pax_force_retaddr 0, 1
34846 ret
34847 ENDPROC(efi_call1)
34848
34849@@ -105,6 +108,7 @@ ENTRY(efi_call2)
34850 RESTORE_PGT
34851 addq $32, %rsp
34852 RESTORE_XMM
34853+ pax_force_retaddr 0, 1
34854 ret
34855 ENDPROC(efi_call2)
34856
34857@@ -118,6 +122,7 @@ ENTRY(efi_call3)
34858 RESTORE_PGT
34859 addq $32, %rsp
34860 RESTORE_XMM
34861+ pax_force_retaddr 0, 1
34862 ret
34863 ENDPROC(efi_call3)
34864
34865@@ -132,6 +137,7 @@ ENTRY(efi_call4)
34866 RESTORE_PGT
34867 addq $32, %rsp
34868 RESTORE_XMM
34869+ pax_force_retaddr 0, 1
34870 ret
34871 ENDPROC(efi_call4)
34872
34873@@ -147,6 +153,7 @@ ENTRY(efi_call5)
34874 RESTORE_PGT
34875 addq $48, %rsp
34876 RESTORE_XMM
34877+ pax_force_retaddr 0, 1
34878 ret
34879 ENDPROC(efi_call5)
34880
34881@@ -165,6 +172,7 @@ ENTRY(efi_call6)
34882 RESTORE_PGT
34883 addq $48, %rsp
34884 RESTORE_XMM
34885+ pax_force_retaddr 0, 1
34886 ret
34887 ENDPROC(efi_call6)
34888
34889diff --git a/arch/x86/platform/intel-mid/intel-mid.c b/arch/x86/platform/intel-mid/intel-mid.c
34890index 1bbedc4..eb795b5 100644
34891--- a/arch/x86/platform/intel-mid/intel-mid.c
34892+++ b/arch/x86/platform/intel-mid/intel-mid.c
34893@@ -71,9 +71,10 @@ static void intel_mid_power_off(void)
34894 {
34895 };
34896
34897-static void intel_mid_reboot(void)
34898+static void __noreturn intel_mid_reboot(void)
34899 {
34900 intel_scu_ipc_simple_command(IPCMSG_COLD_BOOT, 0);
34901+ BUG();
34902 }
34903
34904 static unsigned long __init intel_mid_calibrate_tsc(void)
34905diff --git a/arch/x86/platform/olpc/olpc_dt.c b/arch/x86/platform/olpc/olpc_dt.c
34906index d6ee929..3637cb5 100644
34907--- a/arch/x86/platform/olpc/olpc_dt.c
34908+++ b/arch/x86/platform/olpc/olpc_dt.c
34909@@ -156,7 +156,7 @@ void * __init prom_early_alloc(unsigned long size)
34910 return res;
34911 }
34912
34913-static struct of_pdt_ops prom_olpc_ops __initdata = {
34914+static struct of_pdt_ops prom_olpc_ops __initconst = {
34915 .nextprop = olpc_dt_nextprop,
34916 .getproplen = olpc_dt_getproplen,
34917 .getproperty = olpc_dt_getproperty,
34918diff --git a/arch/x86/power/cpu.c b/arch/x86/power/cpu.c
34919index 424f4c9..f2a2988 100644
34920--- a/arch/x86/power/cpu.c
34921+++ b/arch/x86/power/cpu.c
34922@@ -137,11 +137,8 @@ static void do_fpu_end(void)
34923 static void fix_processor_context(void)
34924 {
34925 int cpu = smp_processor_id();
34926- struct tss_struct *t = &per_cpu(init_tss, cpu);
34927-#ifdef CONFIG_X86_64
34928- struct desc_struct *desc = get_cpu_gdt_table(cpu);
34929- tss_desc tss;
34930-#endif
34931+ struct tss_struct *t = init_tss + cpu;
34932+
34933 set_tss_desc(cpu, t); /*
34934 * This just modifies memory; should not be
34935 * necessary. But... This is necessary, because
34936@@ -150,10 +147,6 @@ static void fix_processor_context(void)
34937 */
34938
34939 #ifdef CONFIG_X86_64
34940- memcpy(&tss, &desc[GDT_ENTRY_TSS], sizeof(tss_desc));
34941- tss.type = 0x9; /* The available 64-bit TSS (see AMD vol 2, pg 91 */
34942- write_gdt_entry(desc, GDT_ENTRY_TSS, &tss, DESC_TSS);
34943-
34944 syscall_init(); /* This sets MSR_*STAR and related */
34945 #endif
34946 load_TR_desc(); /* This does ltr */
34947diff --git a/arch/x86/realmode/init.c b/arch/x86/realmode/init.c
34948index bad628a..a102610 100644
34949--- a/arch/x86/realmode/init.c
34950+++ b/arch/x86/realmode/init.c
34951@@ -68,7 +68,13 @@ void __init setup_real_mode(void)
34952 __va(real_mode_header->trampoline_header);
34953
34954 #ifdef CONFIG_X86_32
34955- trampoline_header->start = __pa_symbol(startup_32_smp);
34956+ trampoline_header->start = __pa_symbol(ktla_ktva(startup_32_smp));
34957+
34958+#ifdef CONFIG_PAX_KERNEXEC
34959+ trampoline_header->start -= LOAD_PHYSICAL_ADDR;
34960+#endif
34961+
34962+ trampoline_header->boot_cs = __BOOT_CS;
34963 trampoline_header->gdt_limit = __BOOT_DS + 7;
34964 trampoline_header->gdt_base = __pa_symbol(boot_gdt);
34965 #else
34966@@ -84,7 +90,7 @@ void __init setup_real_mode(void)
34967 *trampoline_cr4_features = read_cr4();
34968
34969 trampoline_pgd = (u64 *) __va(real_mode_header->trampoline_pgd);
34970- trampoline_pgd[0] = init_level4_pgt[pgd_index(__PAGE_OFFSET)].pgd;
34971+ trampoline_pgd[0] = init_level4_pgt[pgd_index(__PAGE_OFFSET)].pgd & ~_PAGE_NX;
34972 trampoline_pgd[511] = init_level4_pgt[511].pgd;
34973 #endif
34974 }
34975diff --git a/arch/x86/realmode/rm/Makefile b/arch/x86/realmode/rm/Makefile
34976index 3497f14..cc73b92 100644
34977--- a/arch/x86/realmode/rm/Makefile
34978+++ b/arch/x86/realmode/rm/Makefile
34979@@ -66,5 +66,8 @@ $(obj)/realmode.relocs: $(obj)/realmode.elf FORCE
34980
34981 KBUILD_CFLAGS := $(LINUXINCLUDE) $(REALMODE_CFLAGS) -D_SETUP -D_WAKEUP \
34982 -I$(srctree)/arch/x86/boot
34983+ifdef CONSTIFY_PLUGIN
34984+KBUILD_CFLAGS += -fplugin-arg-constify_plugin-no-constify
34985+endif
34986 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
34987 GCOV_PROFILE := n
34988diff --git a/arch/x86/realmode/rm/header.S b/arch/x86/realmode/rm/header.S
34989index a28221d..93c40f1 100644
34990--- a/arch/x86/realmode/rm/header.S
34991+++ b/arch/x86/realmode/rm/header.S
34992@@ -30,7 +30,9 @@ GLOBAL(real_mode_header)
34993 #endif
34994 /* APM/BIOS reboot */
34995 .long pa_machine_real_restart_asm
34996-#ifdef CONFIG_X86_64
34997+#ifdef CONFIG_X86_32
34998+ .long __KERNEL_CS
34999+#else
35000 .long __KERNEL32_CS
35001 #endif
35002 END(real_mode_header)
35003diff --git a/arch/x86/realmode/rm/trampoline_32.S b/arch/x86/realmode/rm/trampoline_32.S
35004index 48ddd76..c26749f 100644
35005--- a/arch/x86/realmode/rm/trampoline_32.S
35006+++ b/arch/x86/realmode/rm/trampoline_32.S
35007@@ -24,6 +24,12 @@
35008 #include <asm/page_types.h>
35009 #include "realmode.h"
35010
35011+#ifdef CONFIG_PAX_KERNEXEC
35012+#define ta(X) (X)
35013+#else
35014+#define ta(X) (pa_ ## X)
35015+#endif
35016+
35017 .text
35018 .code16
35019
35020@@ -38,8 +44,6 @@ ENTRY(trampoline_start)
35021
35022 cli # We should be safe anyway
35023
35024- movl tr_start, %eax # where we need to go
35025-
35026 movl $0xA5A5A5A5, trampoline_status
35027 # write marker for master knows we're running
35028
35029@@ -55,7 +59,7 @@ ENTRY(trampoline_start)
35030 movw $1, %dx # protected mode (PE) bit
35031 lmsw %dx # into protected mode
35032
35033- ljmpl $__BOOT_CS, $pa_startup_32
35034+ ljmpl *(trampoline_header)
35035
35036 .section ".text32","ax"
35037 .code32
35038@@ -66,7 +70,7 @@ ENTRY(startup_32) # note: also used from wakeup_asm.S
35039 .balign 8
35040 GLOBAL(trampoline_header)
35041 tr_start: .space 4
35042- tr_gdt_pad: .space 2
35043+ tr_boot_cs: .space 2
35044 tr_gdt: .space 6
35045 END(trampoline_header)
35046
35047diff --git a/arch/x86/realmode/rm/trampoline_64.S b/arch/x86/realmode/rm/trampoline_64.S
35048index dac7b20..72dbaca 100644
35049--- a/arch/x86/realmode/rm/trampoline_64.S
35050+++ b/arch/x86/realmode/rm/trampoline_64.S
35051@@ -93,6 +93,7 @@ ENTRY(startup_32)
35052 movl %edx, %gs
35053
35054 movl pa_tr_cr4, %eax
35055+ andl $~X86_CR4_PCIDE, %eax
35056 movl %eax, %cr4 # Enable PAE mode
35057
35058 # Setup trampoline 4 level pagetables
35059@@ -106,7 +107,7 @@ ENTRY(startup_32)
35060 wrmsr
35061
35062 # Enable paging and in turn activate Long Mode
35063- movl $(X86_CR0_PG | X86_CR0_WP | X86_CR0_PE), %eax
35064+ movl $(X86_CR0_PG | X86_CR0_PE), %eax
35065 movl %eax, %cr0
35066
35067 /*
35068diff --git a/arch/x86/realmode/rm/wakeup_asm.S b/arch/x86/realmode/rm/wakeup_asm.S
35069index 9e7e147..25a4158 100644
35070--- a/arch/x86/realmode/rm/wakeup_asm.S
35071+++ b/arch/x86/realmode/rm/wakeup_asm.S
35072@@ -126,11 +126,10 @@ ENTRY(wakeup_start)
35073 lgdtl pmode_gdt
35074
35075 /* This really couldn't... */
35076- movl pmode_entry, %eax
35077 movl pmode_cr0, %ecx
35078 movl %ecx, %cr0
35079- ljmpl $__KERNEL_CS, $pa_startup_32
35080- /* -> jmp *%eax in trampoline_32.S */
35081+
35082+ ljmpl *pmode_entry
35083 #else
35084 jmp trampoline_start
35085 #endif
35086diff --git a/arch/x86/tools/Makefile b/arch/x86/tools/Makefile
35087index 604a37e..e49702a 100644
35088--- a/arch/x86/tools/Makefile
35089+++ b/arch/x86/tools/Makefile
35090@@ -37,7 +37,7 @@ $(obj)/test_get_len.o: $(srctree)/arch/x86/lib/insn.c $(srctree)/arch/x86/lib/in
35091
35092 $(obj)/insn_sanity.o: $(srctree)/arch/x86/lib/insn.c $(srctree)/arch/x86/lib/inat.c $(srctree)/arch/x86/include/asm/inat_types.h $(srctree)/arch/x86/include/asm/inat.h $(srctree)/arch/x86/include/asm/insn.h $(objtree)/arch/x86/lib/inat-tables.c
35093
35094-HOST_EXTRACFLAGS += -I$(srctree)/tools/include
35095+HOST_EXTRACFLAGS += -I$(srctree)/tools/include -ggdb
35096 hostprogs-y += relocs
35097 relocs-objs := relocs_32.o relocs_64.o relocs_common.o
35098 PHONY += relocs
35099diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
35100index bbb1d22..e505211 100644
35101--- a/arch/x86/tools/relocs.c
35102+++ b/arch/x86/tools/relocs.c
35103@@ -1,5 +1,7 @@
35104 /* This is included from relocs_32/64.c */
35105
35106+#include "../../../include/generated/autoconf.h"
35107+
35108 #define ElfW(type) _ElfW(ELF_BITS, type)
35109 #define _ElfW(bits, type) __ElfW(bits, type)
35110 #define __ElfW(bits, type) Elf##bits##_##type
35111@@ -11,6 +13,7 @@
35112 #define Elf_Sym ElfW(Sym)
35113
35114 static Elf_Ehdr ehdr;
35115+static Elf_Phdr *phdr;
35116
35117 struct relocs {
35118 uint32_t *offset;
35119@@ -383,9 +386,39 @@ static void read_ehdr(FILE *fp)
35120 }
35121 }
35122
35123+static void read_phdrs(FILE *fp)
35124+{
35125+ unsigned int i;
35126+
35127+ phdr = calloc(ehdr.e_phnum, sizeof(Elf_Phdr));
35128+ if (!phdr) {
35129+ die("Unable to allocate %d program headers\n",
35130+ ehdr.e_phnum);
35131+ }
35132+ if (fseek(fp, ehdr.e_phoff, SEEK_SET) < 0) {
35133+ die("Seek to %d failed: %s\n",
35134+ ehdr.e_phoff, strerror(errno));
35135+ }
35136+ if (fread(phdr, sizeof(*phdr), ehdr.e_phnum, fp) != ehdr.e_phnum) {
35137+ die("Cannot read ELF program headers: %s\n",
35138+ strerror(errno));
35139+ }
35140+ for(i = 0; i < ehdr.e_phnum; i++) {
35141+ phdr[i].p_type = elf_word_to_cpu(phdr[i].p_type);
35142+ phdr[i].p_offset = elf_off_to_cpu(phdr[i].p_offset);
35143+ phdr[i].p_vaddr = elf_addr_to_cpu(phdr[i].p_vaddr);
35144+ phdr[i].p_paddr = elf_addr_to_cpu(phdr[i].p_paddr);
35145+ phdr[i].p_filesz = elf_word_to_cpu(phdr[i].p_filesz);
35146+ phdr[i].p_memsz = elf_word_to_cpu(phdr[i].p_memsz);
35147+ phdr[i].p_flags = elf_word_to_cpu(phdr[i].p_flags);
35148+ phdr[i].p_align = elf_word_to_cpu(phdr[i].p_align);
35149+ }
35150+
35151+}
35152+
35153 static void read_shdrs(FILE *fp)
35154 {
35155- int i;
35156+ unsigned int i;
35157 Elf_Shdr shdr;
35158
35159 secs = calloc(ehdr.e_shnum, sizeof(struct section));
35160@@ -420,7 +453,7 @@ static void read_shdrs(FILE *fp)
35161
35162 static void read_strtabs(FILE *fp)
35163 {
35164- int i;
35165+ unsigned int i;
35166 for (i = 0; i < ehdr.e_shnum; i++) {
35167 struct section *sec = &secs[i];
35168 if (sec->shdr.sh_type != SHT_STRTAB) {
35169@@ -445,7 +478,7 @@ static void read_strtabs(FILE *fp)
35170
35171 static void read_symtabs(FILE *fp)
35172 {
35173- int i,j;
35174+ unsigned int i,j;
35175 for (i = 0; i < ehdr.e_shnum; i++) {
35176 struct section *sec = &secs[i];
35177 if (sec->shdr.sh_type != SHT_SYMTAB) {
35178@@ -476,9 +509,11 @@ static void read_symtabs(FILE *fp)
35179 }
35180
35181
35182-static void read_relocs(FILE *fp)
35183+static void read_relocs(FILE *fp, int use_real_mode)
35184 {
35185- int i,j;
35186+ unsigned int i,j;
35187+ uint32_t base;
35188+
35189 for (i = 0; i < ehdr.e_shnum; i++) {
35190 struct section *sec = &secs[i];
35191 if (sec->shdr.sh_type != SHT_REL_TYPE) {
35192@@ -498,9 +533,22 @@ static void read_relocs(FILE *fp)
35193 die("Cannot read symbol table: %s\n",
35194 strerror(errno));
35195 }
35196+ base = 0;
35197+
35198+#ifdef CONFIG_X86_32
35199+ for (j = 0; !use_real_mode && j < ehdr.e_phnum; j++) {
35200+ if (phdr[j].p_type != PT_LOAD )
35201+ continue;
35202+ if (secs[sec->shdr.sh_info].shdr.sh_offset < phdr[j].p_offset || secs[sec->shdr.sh_info].shdr.sh_offset >= phdr[j].p_offset + phdr[j].p_filesz)
35203+ continue;
35204+ base = CONFIG_PAGE_OFFSET + phdr[j].p_paddr - phdr[j].p_vaddr;
35205+ break;
35206+ }
35207+#endif
35208+
35209 for (j = 0; j < sec->shdr.sh_size/sizeof(Elf_Rel); j++) {
35210 Elf_Rel *rel = &sec->reltab[j];
35211- rel->r_offset = elf_addr_to_cpu(rel->r_offset);
35212+ rel->r_offset = elf_addr_to_cpu(rel->r_offset) + base;
35213 rel->r_info = elf_xword_to_cpu(rel->r_info);
35214 #if (SHT_REL_TYPE == SHT_RELA)
35215 rel->r_addend = elf_xword_to_cpu(rel->r_addend);
35216@@ -512,7 +560,7 @@ static void read_relocs(FILE *fp)
35217
35218 static void print_absolute_symbols(void)
35219 {
35220- int i;
35221+ unsigned int i;
35222 const char *format;
35223
35224 if (ELF_BITS == 64)
35225@@ -525,7 +573,7 @@ static void print_absolute_symbols(void)
35226 for (i = 0; i < ehdr.e_shnum; i++) {
35227 struct section *sec = &secs[i];
35228 char *sym_strtab;
35229- int j;
35230+ unsigned int j;
35231
35232 if (sec->shdr.sh_type != SHT_SYMTAB) {
35233 continue;
35234@@ -552,7 +600,7 @@ static void print_absolute_symbols(void)
35235
35236 static void print_absolute_relocs(void)
35237 {
35238- int i, printed = 0;
35239+ unsigned int i, printed = 0;
35240 const char *format;
35241
35242 if (ELF_BITS == 64)
35243@@ -565,7 +613,7 @@ static void print_absolute_relocs(void)
35244 struct section *sec_applies, *sec_symtab;
35245 char *sym_strtab;
35246 Elf_Sym *sh_symtab;
35247- int j;
35248+ unsigned int j;
35249 if (sec->shdr.sh_type != SHT_REL_TYPE) {
35250 continue;
35251 }
35252@@ -642,13 +690,13 @@ static void add_reloc(struct relocs *r, uint32_t offset)
35253 static void walk_relocs(int (*process)(struct section *sec, Elf_Rel *rel,
35254 Elf_Sym *sym, const char *symname))
35255 {
35256- int i;
35257+ unsigned int i;
35258 /* Walk through the relocations */
35259 for (i = 0; i < ehdr.e_shnum; i++) {
35260 char *sym_strtab;
35261 Elf_Sym *sh_symtab;
35262 struct section *sec_applies, *sec_symtab;
35263- int j;
35264+ unsigned int j;
35265 struct section *sec = &secs[i];
35266
35267 if (sec->shdr.sh_type != SHT_REL_TYPE) {
35268@@ -822,6 +870,23 @@ static int do_reloc32(struct section *sec, Elf_Rel *rel, Elf_Sym *sym,
35269 {
35270 unsigned r_type = ELF32_R_TYPE(rel->r_info);
35271 int shn_abs = (sym->st_shndx == SHN_ABS) && !is_reloc(S_REL, symname);
35272+ char *sym_strtab = sec->link->link->strtab;
35273+
35274+ /* Don't relocate actual per-cpu variables, they are absolute indices, not addresses */
35275+ if (!strcmp(sec_name(sym->st_shndx), ".data..percpu") && strcmp(sym_name(sym_strtab, sym), "__per_cpu_load"))
35276+ return 0;
35277+
35278+#ifdef CONFIG_PAX_KERNEXEC
35279+ /* Don't relocate actual code, they are relocated implicitly by the base address of KERNEL_CS */
35280+ if (!strcmp(sec_name(sym->st_shndx), ".text.end") && !strcmp(sym_name(sym_strtab, sym), "_etext"))
35281+ return 0;
35282+ if (!strcmp(sec_name(sym->st_shndx), ".init.text"))
35283+ return 0;
35284+ if (!strcmp(sec_name(sym->st_shndx), ".exit.text"))
35285+ return 0;
35286+ if (!strcmp(sec_name(sym->st_shndx), ".text") && strcmp(sym_name(sym_strtab, sym), "__LOAD_PHYSICAL_ADDR"))
35287+ return 0;
35288+#endif
35289
35290 switch (r_type) {
35291 case R_386_NONE:
35292@@ -960,7 +1025,7 @@ static int write32_as_text(uint32_t v, FILE *f)
35293
35294 static void emit_relocs(int as_text, int use_real_mode)
35295 {
35296- int i;
35297+ unsigned int i;
35298 int (*write_reloc)(uint32_t, FILE *) = write32;
35299 int (*do_reloc)(struct section *sec, Elf_Rel *rel, Elf_Sym *sym,
35300 const char *symname);
35301@@ -1060,10 +1125,11 @@ void process(FILE *fp, int use_real_mode, int as_text,
35302 {
35303 regex_init(use_real_mode);
35304 read_ehdr(fp);
35305+ read_phdrs(fp);
35306 read_shdrs(fp);
35307 read_strtabs(fp);
35308 read_symtabs(fp);
35309- read_relocs(fp);
35310+ read_relocs(fp, use_real_mode);
35311 if (ELF_BITS == 64)
35312 percpu_init();
35313 if (show_absolute_syms) {
35314diff --git a/arch/x86/um/mem_32.c b/arch/x86/um/mem_32.c
35315index f40281e..92728c9 100644
35316--- a/arch/x86/um/mem_32.c
35317+++ b/arch/x86/um/mem_32.c
35318@@ -21,7 +21,7 @@ static int __init gate_vma_init(void)
35319 gate_vma.vm_start = FIXADDR_USER_START;
35320 gate_vma.vm_end = FIXADDR_USER_END;
35321 gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
35322- gate_vma.vm_page_prot = __P101;
35323+ gate_vma.vm_page_prot = vm_get_page_prot(gate_vma.vm_flags);
35324
35325 return 0;
35326 }
35327diff --git a/arch/x86/um/tls_32.c b/arch/x86/um/tls_32.c
35328index 80ffa5b..a33bd15 100644
35329--- a/arch/x86/um/tls_32.c
35330+++ b/arch/x86/um/tls_32.c
35331@@ -260,7 +260,7 @@ out:
35332 if (unlikely(task == current &&
35333 !t->arch.tls_array[idx - GDT_ENTRY_TLS_MIN].flushed)) {
35334 printk(KERN_ERR "get_tls_entry: task with pid %d got here "
35335- "without flushed TLS.", current->pid);
35336+ "without flushed TLS.", task_pid_nr(current));
35337 }
35338
35339 return 0;
35340diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile
35341index c580d12..0a0ba35 100644
35342--- a/arch/x86/vdso/Makefile
35343+++ b/arch/x86/vdso/Makefile
35344@@ -196,7 +196,7 @@ quiet_cmd_vdso = VDSO $@
35345 -Wl,-T,$(filter %.lds,$^) $(filter %.o,$^) && \
35346 sh $(srctree)/$(src)/checkundef.sh '$(NM)' '$@'
35347
35348-VDSO_LDFLAGS = -fPIC -shared $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) \
35349+VDSO_LDFLAGS = -fPIC -shared -Wl,--no-undefined $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) \
35350 $(LTO_CFLAGS)
35351 GCOV_PROFILE := n
35352
35353diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c
35354index 310c5f0..766d0a7 100644
35355--- a/arch/x86/vdso/vdso32-setup.c
35356+++ b/arch/x86/vdso/vdso32-setup.c
35357@@ -29,6 +29,7 @@
35358 #include <asm/fixmap.h>
35359 #include <asm/hpet.h>
35360 #include <asm/vvar.h>
35361+#include <asm/mman.h>
35362
35363 #ifdef CONFIG_COMPAT_VDSO
35364 #define VDSO_DEFAULT 0
35365@@ -99,7 +100,7 @@ void syscall32_cpu_init(void)
35366 void enable_sep_cpu(void)
35367 {
35368 int cpu = get_cpu();
35369- struct tss_struct *tss = &per_cpu(init_tss, cpu);
35370+ struct tss_struct *tss = init_tss + cpu;
35371
35372 if (!boot_cpu_has(X86_FEATURE_SEP)) {
35373 put_cpu();
35374@@ -167,7 +168,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
35375
35376 down_write(&mm->mmap_sem);
35377
35378- addr = get_unmapped_area(NULL, 0, vdso32_size + VDSO_OFFSET(VDSO_PREV_PAGES), 0, 0);
35379+ addr = get_unmapped_area(NULL, 0, vdso32_size + VDSO_OFFSET(VDSO_PREV_PAGES), 0, MAP_EXECUTABLE);
35380 if (IS_ERR_VALUE(addr)) {
35381 ret = addr;
35382 goto up_fail;
35383@@ -175,7 +176,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
35384
35385 addr += VDSO_OFFSET(VDSO_PREV_PAGES);
35386
35387- current->mm->context.vdso = (void *)addr;
35388+ current->mm->context.vdso = addr;
35389
35390 /*
35391 * MAYWRITE to allow gdb to COW and set breakpoints
35392@@ -224,11 +225,11 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
35393 #endif
35394
35395 current_thread_info()->sysenter_return =
35396- VDSO32_SYMBOL(addr, SYSENTER_RETURN);
35397+ (void __force_user *)VDSO32_SYMBOL(addr, SYSENTER_RETURN);
35398
35399 up_fail:
35400 if (ret)
35401- current->mm->context.vdso = NULL;
35402+ current->mm->context.vdso = 0;
35403
35404 up_write(&mm->mmap_sem);
35405
35406@@ -282,8 +283,14 @@ __initcall(ia32_binfmt_init);
35407
35408 const char *arch_vma_name(struct vm_area_struct *vma)
35409 {
35410- if (vma->vm_mm && vma->vm_start == (long)vma->vm_mm->context.vdso)
35411+ if (vma->vm_mm && vma->vm_start == vma->vm_mm->context.vdso)
35412 return "[vdso]";
35413+
35414+#ifdef CONFIG_PAX_SEGMEXEC
35415+ if (vma->vm_mm && vma->vm_mirror && vma->vm_mirror->vm_start == vma->vm_mm->context.vdso)
35416+ return "[vdso]";
35417+#endif
35418+
35419 return NULL;
35420 }
35421
35422diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c
35423index 1ad1026..1a08abe 100644
35424--- a/arch/x86/vdso/vma.c
35425+++ b/arch/x86/vdso/vma.c
35426@@ -17,8 +17,6 @@
35427 #include <asm/page.h>
35428
35429 #if defined(CONFIG_X86_64)
35430-unsigned int __read_mostly vdso_enabled = 1;
35431-
35432 DECLARE_VDSO_IMAGE(vdso);
35433 extern unsigned short vdso_sync_cpuid;
35434 static unsigned vdso_size;
35435@@ -144,7 +142,6 @@ static unsigned long vdso_addr(unsigned long start, unsigned len)
35436 * unaligned here as a result of stack start randomization.
35437 */
35438 addr = PAGE_ALIGN(addr);
35439- addr = align_vdso_addr(addr);
35440
35441 return addr;
35442 }
35443@@ -157,30 +154,31 @@ static int setup_additional_pages(struct linux_binprm *bprm,
35444 unsigned size)
35445 {
35446 struct mm_struct *mm = current->mm;
35447- unsigned long addr;
35448+ unsigned long addr = 0;
35449 int ret;
35450
35451- if (!vdso_enabled)
35452- return 0;
35453-
35454 down_write(&mm->mmap_sem);
35455+
35456+#ifdef CONFIG_PAX_RANDMMAP
35457+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
35458+#endif
35459+
35460 addr = vdso_addr(mm->start_stack, size);
35461+ addr = align_vdso_addr(addr);
35462 addr = get_unmapped_area(NULL, addr, size, 0, 0);
35463 if (IS_ERR_VALUE(addr)) {
35464 ret = addr;
35465 goto up_fail;
35466 }
35467
35468- current->mm->context.vdso = (void *)addr;
35469+ mm->context.vdso = addr;
35470
35471 ret = install_special_mapping(mm, addr, size,
35472 VM_READ|VM_EXEC|
35473 VM_MAYREAD|VM_MAYWRITE|VM_MAYEXEC,
35474 pages);
35475- if (ret) {
35476- current->mm->context.vdso = NULL;
35477- goto up_fail;
35478- }
35479+ if (ret)
35480+ mm->context.vdso = 0;
35481
35482 up_fail:
35483 up_write(&mm->mmap_sem);
35484@@ -200,11 +198,4 @@ int x32_setup_additional_pages(struct linux_binprm *bprm, int uses_interp)
35485 vdsox32_size);
35486 }
35487 #endif
35488-
35489-static __init int vdso_setup(char *s)
35490-{
35491- vdso_enabled = simple_strtoul(s, NULL, 0);
35492- return 0;
35493-}
35494-__setup("vdso=", vdso_setup);
35495 #endif
35496diff --git a/arch/x86/xen/Kconfig b/arch/x86/xen/Kconfig
35497index e88fda8..76ce7ce 100644
35498--- a/arch/x86/xen/Kconfig
35499+++ b/arch/x86/xen/Kconfig
35500@@ -9,6 +9,7 @@ config XEN
35501 select XEN_HAVE_PVMMU
35502 depends on X86_64 || (X86_32 && X86_PAE)
35503 depends on X86_TSC
35504+ depends on !GRKERNSEC_CONFIG_AUTO || GRKERNSEC_CONFIG_VIRT_XEN
35505 help
35506 This is the Linux Xen port. Enabling this will allow the
35507 kernel to boot in a paravirtualized environment under the
35508diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
35509index c34bfc4..e599673 100644
35510--- a/arch/x86/xen/enlighten.c
35511+++ b/arch/x86/xen/enlighten.c
35512@@ -123,8 +123,6 @@ EXPORT_SYMBOL_GPL(xen_start_info);
35513
35514 struct shared_info xen_dummy_shared_info;
35515
35516-void *xen_initial_gdt;
35517-
35518 RESERVE_BRK(shared_info_page_brk, PAGE_SIZE);
35519 __read_mostly int xen_have_vector_callback;
35520 EXPORT_SYMBOL_GPL(xen_have_vector_callback);
35521@@ -542,8 +540,7 @@ static void xen_load_gdt(const struct desc_ptr *dtr)
35522 {
35523 unsigned long va = dtr->address;
35524 unsigned int size = dtr->size + 1;
35525- unsigned pages = (size + PAGE_SIZE - 1) / PAGE_SIZE;
35526- unsigned long frames[pages];
35527+ unsigned long frames[65536 / PAGE_SIZE];
35528 int f;
35529
35530 /*
35531@@ -591,8 +588,7 @@ static void __init xen_load_gdt_boot(const struct desc_ptr *dtr)
35532 {
35533 unsigned long va = dtr->address;
35534 unsigned int size = dtr->size + 1;
35535- unsigned pages = (size + PAGE_SIZE - 1) / PAGE_SIZE;
35536- unsigned long frames[pages];
35537+ unsigned long frames[(GDT_SIZE + PAGE_SIZE - 1) / PAGE_SIZE];
35538 int f;
35539
35540 /*
35541@@ -600,7 +596,7 @@ static void __init xen_load_gdt_boot(const struct desc_ptr *dtr)
35542 * 8-byte entries, or 16 4k pages..
35543 */
35544
35545- BUG_ON(size > 65536);
35546+ BUG_ON(size > GDT_SIZE);
35547 BUG_ON(va & ~PAGE_MASK);
35548
35549 for (f = 0; va < dtr->address + size; va += PAGE_SIZE, f++) {
35550@@ -989,7 +985,7 @@ static u32 xen_safe_apic_wait_icr_idle(void)
35551 return 0;
35552 }
35553
35554-static void set_xen_basic_apic_ops(void)
35555+static void __init set_xen_basic_apic_ops(void)
35556 {
35557 apic->read = xen_apic_read;
35558 apic->write = xen_apic_write;
35559@@ -1295,30 +1291,30 @@ static const struct pv_apic_ops xen_apic_ops __initconst = {
35560 #endif
35561 };
35562
35563-static void xen_reboot(int reason)
35564+static __noreturn void xen_reboot(int reason)
35565 {
35566 struct sched_shutdown r = { .reason = reason };
35567
35568- if (HYPERVISOR_sched_op(SCHEDOP_shutdown, &r))
35569- BUG();
35570+ HYPERVISOR_sched_op(SCHEDOP_shutdown, &r);
35571+ BUG();
35572 }
35573
35574-static void xen_restart(char *msg)
35575+static __noreturn void xen_restart(char *msg)
35576 {
35577 xen_reboot(SHUTDOWN_reboot);
35578 }
35579
35580-static void xen_emergency_restart(void)
35581+static __noreturn void xen_emergency_restart(void)
35582 {
35583 xen_reboot(SHUTDOWN_reboot);
35584 }
35585
35586-static void xen_machine_halt(void)
35587+static __noreturn void xen_machine_halt(void)
35588 {
35589 xen_reboot(SHUTDOWN_poweroff);
35590 }
35591
35592-static void xen_machine_power_off(void)
35593+static __noreturn void xen_machine_power_off(void)
35594 {
35595 if (pm_power_off)
35596 pm_power_off();
35597@@ -1564,7 +1560,17 @@ asmlinkage __visible void __init xen_start_kernel(void)
35598 __userpte_alloc_gfp &= ~__GFP_HIGHMEM;
35599
35600 /* Work out if we support NX */
35601- x86_configure_nx();
35602+#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
35603+ if ((cpuid_eax(0x80000000) & 0xffff0000) == 0x80000000 &&
35604+ (cpuid_edx(0x80000001) & (1U << (X86_FEATURE_NX & 31)))) {
35605+ unsigned l, h;
35606+
35607+ __supported_pte_mask |= _PAGE_NX;
35608+ rdmsr(MSR_EFER, l, h);
35609+ l |= EFER_NX;
35610+ wrmsr(MSR_EFER, l, h);
35611+ }
35612+#endif
35613
35614 /* Get mfn list */
35615 xen_build_dynamic_phys_to_machine();
35616@@ -1592,13 +1598,6 @@ asmlinkage __visible void __init xen_start_kernel(void)
35617
35618 machine_ops = xen_machine_ops;
35619
35620- /*
35621- * The only reliable way to retain the initial address of the
35622- * percpu gdt_page is to remember it here, so we can go and
35623- * mark it RW later, when the initial percpu area is freed.
35624- */
35625- xen_initial_gdt = &per_cpu(gdt_page, 0);
35626-
35627 xen_smp_init();
35628
35629 #ifdef CONFIG_ACPI_NUMA
35630diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
35631index 86e02ea..e3705ca 100644
35632--- a/arch/x86/xen/mmu.c
35633+++ b/arch/x86/xen/mmu.c
35634@@ -379,7 +379,7 @@ static pteval_t pte_mfn_to_pfn(pteval_t val)
35635 return val;
35636 }
35637
35638-static pteval_t pte_pfn_to_mfn(pteval_t val)
35639+static pteval_t __intentional_overflow(-1) pte_pfn_to_mfn(pteval_t val)
35640 {
35641 if (val & _PAGE_PRESENT) {
35642 unsigned long pfn = (val & PTE_PFN_MASK) >> PAGE_SHIFT;
35643@@ -1904,6 +1904,9 @@ void __init xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn)
35644 /* L3_k[510] -> level2_kernel_pgt
35645 * L3_i[511] -> level2_fixmap_pgt */
35646 convert_pfn_mfn(level3_kernel_pgt);
35647+ convert_pfn_mfn(level3_vmalloc_start_pgt);
35648+ convert_pfn_mfn(level3_vmalloc_end_pgt);
35649+ convert_pfn_mfn(level3_vmemmap_pgt);
35650 }
35651 /* We get [511][511] and have Xen's version of level2_kernel_pgt */
35652 l3 = m2v(pgd[pgd_index(__START_KERNEL_map)].pgd);
35653@@ -1933,8 +1936,12 @@ void __init xen_setup_kernel_pagetable(pgd_t *pgd, unsigned long max_pfn)
35654 set_page_prot(init_level4_pgt, PAGE_KERNEL_RO);
35655 set_page_prot(level3_ident_pgt, PAGE_KERNEL_RO);
35656 set_page_prot(level3_kernel_pgt, PAGE_KERNEL_RO);
35657+ set_page_prot(level3_vmalloc_start_pgt, PAGE_KERNEL_RO);
35658+ set_page_prot(level3_vmalloc_end_pgt, PAGE_KERNEL_RO);
35659+ set_page_prot(level3_vmemmap_pgt, PAGE_KERNEL_RO);
35660 set_page_prot(level3_user_vsyscall, PAGE_KERNEL_RO);
35661 set_page_prot(level2_ident_pgt, PAGE_KERNEL_RO);
35662+ set_page_prot(level2_vmemmap_pgt, PAGE_KERNEL_RO);
35663 set_page_prot(level2_kernel_pgt, PAGE_KERNEL_RO);
35664 set_page_prot(level2_fixmap_pgt, PAGE_KERNEL_RO);
35665
35666@@ -2122,6 +2129,7 @@ static void __init xen_post_allocator_init(void)
35667 pv_mmu_ops.set_pud = xen_set_pud;
35668 #if PAGETABLE_LEVELS == 4
35669 pv_mmu_ops.set_pgd = xen_set_pgd;
35670+ pv_mmu_ops.set_pgd_batched = xen_set_pgd;
35671 #endif
35672
35673 /* This will work as long as patching hasn't happened yet
35674@@ -2200,6 +2208,7 @@ static const struct pv_mmu_ops xen_mmu_ops __initconst = {
35675 .pud_val = PV_CALLEE_SAVE(xen_pud_val),
35676 .make_pud = PV_CALLEE_SAVE(xen_make_pud),
35677 .set_pgd = xen_set_pgd_hyper,
35678+ .set_pgd_batched = xen_set_pgd_hyper,
35679
35680 .alloc_pud = xen_alloc_pmd_init,
35681 .release_pud = xen_release_pmd_init,
35682diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
35683index 7005974..54fb05f 100644
35684--- a/arch/x86/xen/smp.c
35685+++ b/arch/x86/xen/smp.c
35686@@ -283,17 +283,13 @@ static void __init xen_smp_prepare_boot_cpu(void)
35687
35688 if (xen_pv_domain()) {
35689 if (!xen_feature(XENFEAT_writable_page_tables))
35690- /* We've switched to the "real" per-cpu gdt, so make
35691- * sure the old memory can be recycled. */
35692- make_lowmem_page_readwrite(xen_initial_gdt);
35693-
35694 #ifdef CONFIG_X86_32
35695 /*
35696 * Xen starts us with XEN_FLAT_RING1_DS, but linux code
35697 * expects __USER_DS
35698 */
35699- loadsegment(ds, __USER_DS);
35700- loadsegment(es, __USER_DS);
35701+ loadsegment(ds, __KERNEL_DS);
35702+ loadsegment(es, __KERNEL_DS);
35703 #endif
35704
35705 xen_filter_cpu_maps();
35706@@ -372,7 +368,7 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle)
35707 #ifdef CONFIG_X86_32
35708 /* Note: PVH is not yet supported on x86_32. */
35709 ctxt->user_regs.fs = __KERNEL_PERCPU;
35710- ctxt->user_regs.gs = __KERNEL_STACK_CANARY;
35711+ savesegment(gs, ctxt->user_regs.gs);
35712 #endif
35713 ctxt->user_regs.eip = (unsigned long)cpu_bringup_and_idle;
35714
35715@@ -381,8 +377,8 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle)
35716 if (!xen_feature(XENFEAT_auto_translated_physmap)) {
35717 ctxt->flags = VGCF_IN_KERNEL;
35718 ctxt->user_regs.eflags = 0x1000; /* IOPL_RING1 */
35719- ctxt->user_regs.ds = __USER_DS;
35720- ctxt->user_regs.es = __USER_DS;
35721+ ctxt->user_regs.ds = __KERNEL_DS;
35722+ ctxt->user_regs.es = __KERNEL_DS;
35723 ctxt->user_regs.ss = __KERNEL_DS;
35724
35725 xen_copy_trap_info(ctxt->trap_ctxt);
35726@@ -437,14 +433,13 @@ static int xen_cpu_up(unsigned int cpu, struct task_struct *idle)
35727 int rc;
35728
35729 per_cpu(current_task, cpu) = idle;
35730+ per_cpu(current_tinfo, cpu) = &idle->tinfo;
35731 #ifdef CONFIG_X86_32
35732 irq_ctx_init(cpu);
35733 #else
35734 clear_tsk_thread_flag(idle, TIF_FORK);
35735 #endif
35736- per_cpu(kernel_stack, cpu) =
35737- (unsigned long)task_stack_page(idle) -
35738- KERNEL_STACK_OFFSET + THREAD_SIZE;
35739+ per_cpu(kernel_stack, cpu) = (unsigned long)task_stack_page(idle) - 16 + THREAD_SIZE;
35740
35741 xen_setup_runstate_info(cpu);
35742 xen_setup_timer(cpu);
35743@@ -720,7 +715,7 @@ static const struct smp_ops xen_smp_ops __initconst = {
35744
35745 void __init xen_smp_init(void)
35746 {
35747- smp_ops = xen_smp_ops;
35748+ memcpy((void *)&smp_ops, &xen_smp_ops, sizeof smp_ops);
35749 xen_fill_possible_map();
35750 }
35751
35752diff --git a/arch/x86/xen/xen-asm_32.S b/arch/x86/xen/xen-asm_32.S
35753index fd92a64..1f72641 100644
35754--- a/arch/x86/xen/xen-asm_32.S
35755+++ b/arch/x86/xen/xen-asm_32.S
35756@@ -99,7 +99,7 @@ ENTRY(xen_iret)
35757 pushw %fs
35758 movl $(__KERNEL_PERCPU), %eax
35759 movl %eax, %fs
35760- movl %fs:xen_vcpu, %eax
35761+ mov PER_CPU_VAR(xen_vcpu), %eax
35762 POP_FS
35763 #else
35764 movl %ss:xen_vcpu, %eax
35765diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
35766index 485b695..fda3e7c 100644
35767--- a/arch/x86/xen/xen-head.S
35768+++ b/arch/x86/xen/xen-head.S
35769@@ -39,6 +39,17 @@ ENTRY(startup_xen)
35770 #ifdef CONFIG_X86_32
35771 mov %esi,xen_start_info
35772 mov $init_thread_union+THREAD_SIZE,%esp
35773+#ifdef CONFIG_SMP
35774+ movl $cpu_gdt_table,%edi
35775+ movl $__per_cpu_load,%eax
35776+ movw %ax,__KERNEL_PERCPU + 2(%edi)
35777+ rorl $16,%eax
35778+ movb %al,__KERNEL_PERCPU + 4(%edi)
35779+ movb %ah,__KERNEL_PERCPU + 7(%edi)
35780+ movl $__per_cpu_end - 1,%eax
35781+ subl $__per_cpu_start,%eax
35782+ movw %ax,__KERNEL_PERCPU + 0(%edi)
35783+#endif
35784 #else
35785 mov %rsi,xen_start_info
35786 mov $init_thread_union+THREAD_SIZE,%rsp
35787diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
35788index 1cb6f4c..9981524 100644
35789--- a/arch/x86/xen/xen-ops.h
35790+++ b/arch/x86/xen/xen-ops.h
35791@@ -10,8 +10,6 @@
35792 extern const char xen_hypervisor_callback[];
35793 extern const char xen_failsafe_callback[];
35794
35795-extern void *xen_initial_gdt;
35796-
35797 struct trap_info;
35798 void xen_copy_trap_info(struct trap_info *traps);
35799
35800diff --git a/arch/xtensa/variants/dc232b/include/variant/core.h b/arch/xtensa/variants/dc232b/include/variant/core.h
35801index 525bd3d..ef888b1 100644
35802--- a/arch/xtensa/variants/dc232b/include/variant/core.h
35803+++ b/arch/xtensa/variants/dc232b/include/variant/core.h
35804@@ -119,9 +119,9 @@
35805 ----------------------------------------------------------------------*/
35806
35807 #define XCHAL_ICACHE_LINESIZE 32 /* I-cache line size in bytes */
35808-#define XCHAL_DCACHE_LINESIZE 32 /* D-cache line size in bytes */
35809 #define XCHAL_ICACHE_LINEWIDTH 5 /* log2(I line size in bytes) */
35810 #define XCHAL_DCACHE_LINEWIDTH 5 /* log2(D line size in bytes) */
35811+#define XCHAL_DCACHE_LINESIZE (_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH) /* D-cache line size in bytes */
35812
35813 #define XCHAL_ICACHE_SIZE 16384 /* I-cache size in bytes or 0 */
35814 #define XCHAL_DCACHE_SIZE 16384 /* D-cache size in bytes or 0 */
35815diff --git a/arch/xtensa/variants/fsf/include/variant/core.h b/arch/xtensa/variants/fsf/include/variant/core.h
35816index 2f33760..835e50a 100644
35817--- a/arch/xtensa/variants/fsf/include/variant/core.h
35818+++ b/arch/xtensa/variants/fsf/include/variant/core.h
35819@@ -11,6 +11,7 @@
35820 #ifndef _XTENSA_CORE_H
35821 #define _XTENSA_CORE_H
35822
35823+#include <linux/const.h>
35824
35825 /****************************************************************************
35826 Parameters Useful for Any Code, USER or PRIVILEGED
35827@@ -112,9 +113,9 @@
35828 ----------------------------------------------------------------------*/
35829
35830 #define XCHAL_ICACHE_LINESIZE 16 /* I-cache line size in bytes */
35831-#define XCHAL_DCACHE_LINESIZE 16 /* D-cache line size in bytes */
35832 #define XCHAL_ICACHE_LINEWIDTH 4 /* log2(I line size in bytes) */
35833 #define XCHAL_DCACHE_LINEWIDTH 4 /* log2(D line size in bytes) */
35834+#define XCHAL_DCACHE_LINESIZE (_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH) /* D-cache line size in bytes */
35835
35836 #define XCHAL_ICACHE_SIZE 8192 /* I-cache size in bytes or 0 */
35837 #define XCHAL_DCACHE_SIZE 8192 /* D-cache size in bytes or 0 */
35838diff --git a/arch/xtensa/variants/s6000/include/variant/core.h b/arch/xtensa/variants/s6000/include/variant/core.h
35839index af00795..2bb8105 100644
35840--- a/arch/xtensa/variants/s6000/include/variant/core.h
35841+++ b/arch/xtensa/variants/s6000/include/variant/core.h
35842@@ -11,6 +11,7 @@
35843 #ifndef _XTENSA_CORE_CONFIGURATION_H
35844 #define _XTENSA_CORE_CONFIGURATION_H
35845
35846+#include <linux/const.h>
35847
35848 /****************************************************************************
35849 Parameters Useful for Any Code, USER or PRIVILEGED
35850@@ -118,9 +119,9 @@
35851 ----------------------------------------------------------------------*/
35852
35853 #define XCHAL_ICACHE_LINESIZE 16 /* I-cache line size in bytes */
35854-#define XCHAL_DCACHE_LINESIZE 16 /* D-cache line size in bytes */
35855 #define XCHAL_ICACHE_LINEWIDTH 4 /* log2(I line size in bytes) */
35856 #define XCHAL_DCACHE_LINEWIDTH 4 /* log2(D line size in bytes) */
35857+#define XCHAL_DCACHE_LINESIZE (_AC(1,UL) << XCHAL_DCACHE_LINEWIDTH) /* D-cache line size in bytes */
35858
35859 #define XCHAL_ICACHE_SIZE 32768 /* I-cache size in bytes or 0 */
35860 #define XCHAL_DCACHE_SIZE 32768 /* D-cache size in bytes or 0 */
35861diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
35862index 1039fb9..d7c0d9a 100644
35863--- a/block/blk-cgroup.c
35864+++ b/block/blk-cgroup.c
35865@@ -825,7 +825,7 @@ static void blkcg_css_free(struct cgroup_subsys_state *css)
35866 static struct cgroup_subsys_state *
35867 blkcg_css_alloc(struct cgroup_subsys_state *parent_css)
35868 {
35869- static atomic64_t id_seq = ATOMIC64_INIT(0);
35870+ static atomic64_unchecked_t id_seq = ATOMIC64_INIT(0);
35871 struct blkcg *blkcg;
35872
35873 if (!parent_css) {
35874@@ -839,7 +839,7 @@ blkcg_css_alloc(struct cgroup_subsys_state *parent_css)
35875
35876 blkcg->cfq_weight = CFQ_WEIGHT_DEFAULT;
35877 blkcg->cfq_leaf_weight = CFQ_WEIGHT_DEFAULT;
35878- blkcg->id = atomic64_inc_return(&id_seq); /* root is 0, start from 1 */
35879+ blkcg->id = atomic64_inc_return_unchecked(&id_seq); /* root is 0, start from 1 */
35880 done:
35881 spin_lock_init(&blkcg->lock);
35882 INIT_RADIX_TREE(&blkcg->blkg_tree, GFP_ATOMIC);
35883diff --git a/block/blk-iopoll.c b/block/blk-iopoll.c
35884index c11d24e..e915d24 100644
35885--- a/block/blk-iopoll.c
35886+++ b/block/blk-iopoll.c
35887@@ -74,7 +74,7 @@ void blk_iopoll_complete(struct blk_iopoll *iopoll)
35888 }
35889 EXPORT_SYMBOL(blk_iopoll_complete);
35890
35891-static void blk_iopoll_softirq(struct softirq_action *h)
35892+static __latent_entropy void blk_iopoll_softirq(void)
35893 {
35894 struct list_head *list = this_cpu_ptr(&blk_cpu_iopoll);
35895 int rearm = 0, budget = blk_iopoll_budget;
35896diff --git a/block/blk-map.c b/block/blk-map.c
35897index f7b22bc..ec2ddf4 100644
35898--- a/block/blk-map.c
35899+++ b/block/blk-map.c
35900@@ -302,7 +302,7 @@ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf,
35901 if (!len || !kbuf)
35902 return -EINVAL;
35903
35904- do_copy = !blk_rq_aligned(q, addr, len) || object_is_on_stack(kbuf);
35905+ do_copy = !blk_rq_aligned(q, addr, len) || object_starts_on_stack(kbuf);
35906 if (do_copy)
35907 bio = bio_copy_kern(q, kbuf, len, gfp_mask, reading);
35908 else
35909diff --git a/block/blk-softirq.c b/block/blk-softirq.c
35910index 53b1737..08177d2e 100644
35911--- a/block/blk-softirq.c
35912+++ b/block/blk-softirq.c
35913@@ -18,7 +18,7 @@ static DEFINE_PER_CPU(struct list_head, blk_cpu_done);
35914 * Softirq action handler - move entries to local list and loop over them
35915 * while passing them to the queue registered handler.
35916 */
35917-static void blk_done_softirq(struct softirq_action *h)
35918+static __latent_entropy void blk_done_softirq(void)
35919 {
35920 struct list_head *cpu_list, local_list;
35921
35922diff --git a/block/bsg.c b/block/bsg.c
35923index 420a5a9..23834aa 100644
35924--- a/block/bsg.c
35925+++ b/block/bsg.c
35926@@ -176,16 +176,24 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
35927 struct sg_io_v4 *hdr, struct bsg_device *bd,
35928 fmode_t has_write_perm)
35929 {
35930+ unsigned char tmpcmd[sizeof(rq->__cmd)];
35931+ unsigned char *cmdptr;
35932+
35933 if (hdr->request_len > BLK_MAX_CDB) {
35934 rq->cmd = kzalloc(hdr->request_len, GFP_KERNEL);
35935 if (!rq->cmd)
35936 return -ENOMEM;
35937- }
35938+ cmdptr = rq->cmd;
35939+ } else
35940+ cmdptr = tmpcmd;
35941
35942- if (copy_from_user(rq->cmd, (void __user *)(unsigned long)hdr->request,
35943+ if (copy_from_user(cmdptr, (void __user *)(unsigned long)hdr->request,
35944 hdr->request_len))
35945 return -EFAULT;
35946
35947+ if (cmdptr != rq->cmd)
35948+ memcpy(rq->cmd, cmdptr, hdr->request_len);
35949+
35950 if (hdr->subprotocol == BSG_SUB_PROTOCOL_SCSI_CMD) {
35951 if (blk_verify_command(rq->cmd, has_write_perm))
35952 return -EPERM;
35953diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c
35954index fbd5a67..f24fd95 100644
35955--- a/block/compat_ioctl.c
35956+++ b/block/compat_ioctl.c
35957@@ -156,7 +156,7 @@ static int compat_cdrom_generic_command(struct block_device *bdev, fmode_t mode,
35958 cgc = compat_alloc_user_space(sizeof(*cgc));
35959 cgc32 = compat_ptr(arg);
35960
35961- if (copy_in_user(&cgc->cmd, &cgc32->cmd, sizeof(cgc->cmd)) ||
35962+ if (copy_in_user(cgc->cmd, cgc32->cmd, sizeof(cgc->cmd)) ||
35963 get_user(data, &cgc32->buffer) ||
35964 put_user(compat_ptr(data), &cgc->buffer) ||
35965 copy_in_user(&cgc->buflen, &cgc32->buflen,
35966@@ -341,7 +341,7 @@ static int compat_fd_ioctl(struct block_device *bdev, fmode_t mode,
35967 err |= __get_user(f->spec1, &uf->spec1);
35968 err |= __get_user(f->fmt_gap, &uf->fmt_gap);
35969 err |= __get_user(name, &uf->name);
35970- f->name = compat_ptr(name);
35971+ f->name = (void __force_kernel *)compat_ptr(name);
35972 if (err) {
35973 err = -EFAULT;
35974 goto out;
35975diff --git a/block/genhd.c b/block/genhd.c
35976index 791f419..89f21c4 100644
35977--- a/block/genhd.c
35978+++ b/block/genhd.c
35979@@ -467,21 +467,24 @@ static char *bdevt_str(dev_t devt, char *buf)
35980
35981 /*
35982 * Register device numbers dev..(dev+range-1)
35983- * range must be nonzero
35984+ * Noop if @range is zero.
35985 * The hash chain is sorted on range, so that subranges can override.
35986 */
35987 void blk_register_region(dev_t devt, unsigned long range, struct module *module,
35988 struct kobject *(*probe)(dev_t, int *, void *),
35989 int (*lock)(dev_t, void *), void *data)
35990 {
35991- kobj_map(bdev_map, devt, range, module, probe, lock, data);
35992+ if (range)
35993+ kobj_map(bdev_map, devt, range, module, probe, lock, data);
35994 }
35995
35996 EXPORT_SYMBOL(blk_register_region);
35997
35998+/* undo blk_register_region(), noop if @range is zero */
35999 void blk_unregister_region(dev_t devt, unsigned long range)
36000 {
36001- kobj_unmap(bdev_map, devt, range);
36002+ if (range)
36003+ kobj_unmap(bdev_map, devt, range);
36004 }
36005
36006 EXPORT_SYMBOL(blk_unregister_region);
36007diff --git a/block/partitions/efi.c b/block/partitions/efi.c
36008index dc51f46..d5446a8 100644
36009--- a/block/partitions/efi.c
36010+++ b/block/partitions/efi.c
36011@@ -293,14 +293,14 @@ static gpt_entry *alloc_read_gpt_entries(struct parsed_partitions *state,
36012 if (!gpt)
36013 return NULL;
36014
36015+ if (!le32_to_cpu(gpt->num_partition_entries))
36016+ return NULL;
36017+ pte = kcalloc(le32_to_cpu(gpt->num_partition_entries), le32_to_cpu(gpt->sizeof_partition_entry), GFP_KERNEL);
36018+ if (!pte)
36019+ return NULL;
36020+
36021 count = le32_to_cpu(gpt->num_partition_entries) *
36022 le32_to_cpu(gpt->sizeof_partition_entry);
36023- if (!count)
36024- return NULL;
36025- pte = kmalloc(count, GFP_KERNEL);
36026- if (!pte)
36027- return NULL;
36028-
36029 if (read_lba(state, le64_to_cpu(gpt->partition_entry_lba),
36030 (u8 *) pte, count) < count) {
36031 kfree(pte);
36032diff --git a/block/scsi_ioctl.c b/block/scsi_ioctl.c
36033index 2648797..92ed21f 100644
36034--- a/block/scsi_ioctl.c
36035+++ b/block/scsi_ioctl.c
36036@@ -67,7 +67,7 @@ static int scsi_get_bus(struct request_queue *q, int __user *p)
36037 return put_user(0, p);
36038 }
36039
36040-static int sg_get_timeout(struct request_queue *q)
36041+static int __intentional_overflow(-1) sg_get_timeout(struct request_queue *q)
36042 {
36043 return jiffies_to_clock_t(q->sg_timeout);
36044 }
36045@@ -224,8 +224,20 @@ EXPORT_SYMBOL(blk_verify_command);
36046 static int blk_fill_sghdr_rq(struct request_queue *q, struct request *rq,
36047 struct sg_io_hdr *hdr, fmode_t mode)
36048 {
36049- if (copy_from_user(rq->cmd, hdr->cmdp, hdr->cmd_len))
36050+ unsigned char tmpcmd[sizeof(rq->__cmd)];
36051+ unsigned char *cmdptr;
36052+
36053+ if (rq->cmd != rq->__cmd)
36054+ cmdptr = rq->cmd;
36055+ else
36056+ cmdptr = tmpcmd;
36057+
36058+ if (copy_from_user(cmdptr, hdr->cmdp, hdr->cmd_len))
36059 return -EFAULT;
36060+
36061+ if (cmdptr != rq->cmd)
36062+ memcpy(rq->cmd, cmdptr, hdr->cmd_len);
36063+
36064 if (blk_verify_command(rq->cmd, mode & FMODE_WRITE))
36065 return -EPERM;
36066
36067@@ -417,6 +429,8 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
36068 int err;
36069 unsigned int in_len, out_len, bytes, opcode, cmdlen;
36070 char *buffer = NULL, sense[SCSI_SENSE_BUFFERSIZE];
36071+ unsigned char tmpcmd[sizeof(rq->__cmd)];
36072+ unsigned char *cmdptr;
36073
36074 if (!sic)
36075 return -EINVAL;
36076@@ -450,9 +464,18 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
36077 */
36078 err = -EFAULT;
36079 rq->cmd_len = cmdlen;
36080- if (copy_from_user(rq->cmd, sic->data, cmdlen))
36081+
36082+ if (rq->cmd != rq->__cmd)
36083+ cmdptr = rq->cmd;
36084+ else
36085+ cmdptr = tmpcmd;
36086+
36087+ if (copy_from_user(cmdptr, sic->data, cmdlen))
36088 goto error;
36089
36090+ if (rq->cmd != cmdptr)
36091+ memcpy(rq->cmd, cmdptr, cmdlen);
36092+
36093 if (in_len && copy_from_user(buffer, sic->data + cmdlen, in_len))
36094 goto error;
36095
36096diff --git a/crypto/cryptd.c b/crypto/cryptd.c
36097index 7bdd61b..afec999 100644
36098--- a/crypto/cryptd.c
36099+++ b/crypto/cryptd.c
36100@@ -63,7 +63,7 @@ struct cryptd_blkcipher_ctx {
36101
36102 struct cryptd_blkcipher_request_ctx {
36103 crypto_completion_t complete;
36104-};
36105+} __no_const;
36106
36107 struct cryptd_hash_ctx {
36108 struct crypto_shash *child;
36109@@ -80,7 +80,7 @@ struct cryptd_aead_ctx {
36110
36111 struct cryptd_aead_request_ctx {
36112 crypto_completion_t complete;
36113-};
36114+} __no_const;
36115
36116 static void cryptd_queue_worker(struct work_struct *work);
36117
36118diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c
36119index 309d345..1632720 100644
36120--- a/crypto/pcrypt.c
36121+++ b/crypto/pcrypt.c
36122@@ -440,7 +440,7 @@ static int pcrypt_sysfs_add(struct padata_instance *pinst, const char *name)
36123 int ret;
36124
36125 pinst->kobj.kset = pcrypt_kset;
36126- ret = kobject_add(&pinst->kobj, NULL, name);
36127+ ret = kobject_add(&pinst->kobj, NULL, "%s", name);
36128 if (!ret)
36129 kobject_uevent(&pinst->kobj, KOBJ_ADD);
36130
36131diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c
36132index 6921c7f..78e1af7 100644
36133--- a/drivers/acpi/acpica/hwxfsleep.c
36134+++ b/drivers/acpi/acpica/hwxfsleep.c
36135@@ -63,11 +63,12 @@ static acpi_status acpi_hw_sleep_dispatch(u8 sleep_state, u32 function_id);
36136 /* Legacy functions are optional, based upon ACPI_REDUCED_HARDWARE */
36137
36138 static struct acpi_sleep_functions acpi_sleep_dispatch[] = {
36139- {ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_sleep),
36140- acpi_hw_extended_sleep},
36141- {ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_wake_prep),
36142- acpi_hw_extended_wake_prep},
36143- {ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_wake), acpi_hw_extended_wake}
36144+ {.legacy_function = ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_sleep),
36145+ .extended_function = acpi_hw_extended_sleep},
36146+ {.legacy_function = ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_wake_prep),
36147+ .extended_function = acpi_hw_extended_wake_prep},
36148+ {.legacy_function = ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_wake),
36149+ .extended_function = acpi_hw_extended_wake}
36150 };
36151
36152 /*
36153diff --git a/drivers/acpi/apei/apei-internal.h b/drivers/acpi/apei/apei-internal.h
36154index e5bcd91..74f050d 100644
36155--- a/drivers/acpi/apei/apei-internal.h
36156+++ b/drivers/acpi/apei/apei-internal.h
36157@@ -19,7 +19,7 @@ typedef int (*apei_exec_ins_func_t)(struct apei_exec_context *ctx,
36158 struct apei_exec_ins_type {
36159 u32 flags;
36160 apei_exec_ins_func_t run;
36161-};
36162+} __do_const;
36163
36164 struct apei_exec_context {
36165 u32 ip;
36166diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c
36167index dab7cb7..f0d2994 100644
36168--- a/drivers/acpi/apei/ghes.c
36169+++ b/drivers/acpi/apei/ghes.c
36170@@ -500,7 +500,7 @@ static void __ghes_print_estatus(const char *pfx,
36171 const struct acpi_hest_generic *generic,
36172 const struct acpi_generic_status *estatus)
36173 {
36174- static atomic_t seqno;
36175+ static atomic_unchecked_t seqno;
36176 unsigned int curr_seqno;
36177 char pfx_seq[64];
36178
36179@@ -511,7 +511,7 @@ static void __ghes_print_estatus(const char *pfx,
36180 else
36181 pfx = KERN_ERR;
36182 }
36183- curr_seqno = atomic_inc_return(&seqno);
36184+ curr_seqno = atomic_inc_return_unchecked(&seqno);
36185 snprintf(pfx_seq, sizeof(pfx_seq), "%s{%u}" HW_ERR, pfx, curr_seqno);
36186 printk("%s""Hardware error from APEI Generic Hardware Error Source: %d\n",
36187 pfx_seq, generic->header.source_id);
36188diff --git a/drivers/acpi/bgrt.c b/drivers/acpi/bgrt.c
36189index a83e3c6..c3d617f 100644
36190--- a/drivers/acpi/bgrt.c
36191+++ b/drivers/acpi/bgrt.c
36192@@ -86,8 +86,10 @@ static int __init bgrt_init(void)
36193 if (!bgrt_image)
36194 return -ENODEV;
36195
36196- bin_attr_image.private = bgrt_image;
36197- bin_attr_image.size = bgrt_image_size;
36198+ pax_open_kernel();
36199+ *(void **)&bin_attr_image.private = bgrt_image;
36200+ *(size_t *)&bin_attr_image.size = bgrt_image_size;
36201+ pax_close_kernel();
36202
36203 bgrt_kobj = kobject_create_and_add("bgrt", acpi_kobj);
36204 if (!bgrt_kobj)
36205diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c
36206index 3d8413d..95f638c 100644
36207--- a/drivers/acpi/blacklist.c
36208+++ b/drivers/acpi/blacklist.c
36209@@ -51,7 +51,7 @@ struct acpi_blacklist_item {
36210 u32 is_critical_error;
36211 };
36212
36213-static struct dmi_system_id acpi_osi_dmi_table[] __initdata;
36214+static const struct dmi_system_id acpi_osi_dmi_table[] __initconst;
36215
36216 /*
36217 * POLICY: If *anything* doesn't work, put it on the blacklist.
36218@@ -163,7 +163,7 @@ static int __init dmi_disable_osi_win8(const struct dmi_system_id *d)
36219 return 0;
36220 }
36221
36222-static struct dmi_system_id acpi_osi_dmi_table[] __initdata = {
36223+static const struct dmi_system_id acpi_osi_dmi_table[] __initconst = {
36224 {
36225 .callback = dmi_disable_osi_vista,
36226 .ident = "Fujitsu Siemens",
36227diff --git a/drivers/acpi/custom_method.c b/drivers/acpi/custom_method.c
36228index c68e724..e863008 100644
36229--- a/drivers/acpi/custom_method.c
36230+++ b/drivers/acpi/custom_method.c
36231@@ -29,6 +29,10 @@ static ssize_t cm_write(struct file *file, const char __user * user_buf,
36232 struct acpi_table_header table;
36233 acpi_status status;
36234
36235+#ifdef CONFIG_GRKERNSEC_KMEM
36236+ return -EPERM;
36237+#endif
36238+
36239 if (!(*ppos)) {
36240 /* parse the table header to get the table length */
36241 if (count <= sizeof(struct acpi_table_header))
36242diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
36243index 3dca36d..abaf070 100644
36244--- a/drivers/acpi/processor_idle.c
36245+++ b/drivers/acpi/processor_idle.c
36246@@ -952,7 +952,7 @@ static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr)
36247 {
36248 int i, count = CPUIDLE_DRIVER_STATE_START;
36249 struct acpi_processor_cx *cx;
36250- struct cpuidle_state *state;
36251+ cpuidle_state_no_const *state;
36252 struct cpuidle_driver *drv = &acpi_idle_driver;
36253
36254 if (!pr->flags.power_setup_done)
36255diff --git a/drivers/acpi/sysfs.c b/drivers/acpi/sysfs.c
36256index 38cb978..352c761 100644
36257--- a/drivers/acpi/sysfs.c
36258+++ b/drivers/acpi/sysfs.c
36259@@ -423,11 +423,11 @@ static u32 num_counters;
36260 static struct attribute **all_attrs;
36261 static u32 acpi_gpe_count;
36262
36263-static struct attribute_group interrupt_stats_attr_group = {
36264+static attribute_group_no_const interrupt_stats_attr_group = {
36265 .name = "interrupts",
36266 };
36267
36268-static struct kobj_attribute *counter_attrs;
36269+static kobj_attribute_no_const *counter_attrs;
36270
36271 static void delete_gpe_attr_array(void)
36272 {
36273diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
36274index b986145..82bddb8 100644
36275--- a/drivers/ata/libahci.c
36276+++ b/drivers/ata/libahci.c
36277@@ -1252,7 +1252,7 @@ int ahci_kick_engine(struct ata_port *ap)
36278 }
36279 EXPORT_SYMBOL_GPL(ahci_kick_engine);
36280
36281-static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
36282+static int __intentional_overflow(-1) ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
36283 struct ata_taskfile *tf, int is_cmd, u16 flags,
36284 unsigned long timeout_msec)
36285 {
36286diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
36287index 18d97d5..be690af 100644
36288--- a/drivers/ata/libata-core.c
36289+++ b/drivers/ata/libata-core.c
36290@@ -98,7 +98,7 @@ static unsigned int ata_dev_set_xfermode(struct ata_device *dev);
36291 static void ata_dev_xfermask(struct ata_device *dev);
36292 static unsigned long ata_dev_blacklisted(const struct ata_device *dev);
36293
36294-atomic_t ata_print_id = ATOMIC_INIT(0);
36295+atomic_unchecked_t ata_print_id = ATOMIC_INIT(0);
36296
36297 struct ata_force_param {
36298 const char *name;
36299@@ -4858,7 +4858,7 @@ void ata_qc_free(struct ata_queued_cmd *qc)
36300 struct ata_port *ap;
36301 unsigned int tag;
36302
36303- WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
36304+ BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
36305 ap = qc->ap;
36306
36307 qc->flags = 0;
36308@@ -4874,7 +4874,7 @@ void __ata_qc_complete(struct ata_queued_cmd *qc)
36309 struct ata_port *ap;
36310 struct ata_link *link;
36311
36312- WARN_ON_ONCE(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
36313+ BUG_ON(qc == NULL); /* ata_qc_from_tag _might_ return NULL */
36314 WARN_ON_ONCE(!(qc->flags & ATA_QCFLAG_ACTIVE));
36315 ap = qc->ap;
36316 link = qc->dev->link;
36317@@ -5978,6 +5978,7 @@ static void ata_finalize_port_ops(struct ata_port_operations *ops)
36318 return;
36319
36320 spin_lock(&lock);
36321+ pax_open_kernel();
36322
36323 for (cur = ops->inherits; cur; cur = cur->inherits) {
36324 void **inherit = (void **)cur;
36325@@ -5991,8 +5992,9 @@ static void ata_finalize_port_ops(struct ata_port_operations *ops)
36326 if (IS_ERR(*pp))
36327 *pp = NULL;
36328
36329- ops->inherits = NULL;
36330+ *(struct ata_port_operations **)&ops->inherits = NULL;
36331
36332+ pax_close_kernel();
36333 spin_unlock(&lock);
36334 }
36335
36336@@ -6185,7 +6187,7 @@ int ata_host_register(struct ata_host *host, struct scsi_host_template *sht)
36337
36338 /* give ports names and add SCSI hosts */
36339 for (i = 0; i < host->n_ports; i++) {
36340- host->ports[i]->print_id = atomic_inc_return(&ata_print_id);
36341+ host->ports[i]->print_id = atomic_inc_return_unchecked(&ata_print_id);
36342 host->ports[i]->local_port_no = i + 1;
36343 }
36344
36345diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
36346index ef8567d..8bdbd03 100644
36347--- a/drivers/ata/libata-scsi.c
36348+++ b/drivers/ata/libata-scsi.c
36349@@ -4147,7 +4147,7 @@ int ata_sas_port_init(struct ata_port *ap)
36350
36351 if (rc)
36352 return rc;
36353- ap->print_id = atomic_inc_return(&ata_print_id);
36354+ ap->print_id = atomic_inc_return_unchecked(&ata_print_id);
36355 return 0;
36356 }
36357 EXPORT_SYMBOL_GPL(ata_sas_port_init);
36358diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h
36359index 45b5ab3..98446b8 100644
36360--- a/drivers/ata/libata.h
36361+++ b/drivers/ata/libata.h
36362@@ -53,7 +53,7 @@ enum {
36363 ATA_DNXFER_QUIET = (1 << 31),
36364 };
36365
36366-extern atomic_t ata_print_id;
36367+extern atomic_unchecked_t ata_print_id;
36368 extern int atapi_passthru16;
36369 extern int libata_fua;
36370 extern int libata_noacpi;
36371diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c
36372index 4edb1a8..84e1658 100644
36373--- a/drivers/ata/pata_arasan_cf.c
36374+++ b/drivers/ata/pata_arasan_cf.c
36375@@ -865,7 +865,9 @@ static int arasan_cf_probe(struct platform_device *pdev)
36376 /* Handle platform specific quirks */
36377 if (quirk) {
36378 if (quirk & CF_BROKEN_PIO) {
36379- ap->ops->set_piomode = NULL;
36380+ pax_open_kernel();
36381+ *(void **)&ap->ops->set_piomode = NULL;
36382+ pax_close_kernel();
36383 ap->pio_mask = 0;
36384 }
36385 if (quirk & CF_BROKEN_MWDMA)
36386diff --git a/drivers/atm/adummy.c b/drivers/atm/adummy.c
36387index f9b983a..887b9d8 100644
36388--- a/drivers/atm/adummy.c
36389+++ b/drivers/atm/adummy.c
36390@@ -114,7 +114,7 @@ adummy_send(struct atm_vcc *vcc, struct sk_buff *skb)
36391 vcc->pop(vcc, skb);
36392 else
36393 dev_kfree_skb_any(skb);
36394- atomic_inc(&vcc->stats->tx);
36395+ atomic_inc_unchecked(&vcc->stats->tx);
36396
36397 return 0;
36398 }
36399diff --git a/drivers/atm/ambassador.c b/drivers/atm/ambassador.c
36400index f1a9198..f466a4a 100644
36401--- a/drivers/atm/ambassador.c
36402+++ b/drivers/atm/ambassador.c
36403@@ -454,7 +454,7 @@ static void tx_complete (amb_dev * dev, tx_out * tx) {
36404 PRINTD (DBG_FLOW|DBG_TX, "tx_complete %p %p", dev, tx);
36405
36406 // VC layer stats
36407- atomic_inc(&ATM_SKB(skb)->vcc->stats->tx);
36408+ atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx);
36409
36410 // free the descriptor
36411 kfree (tx_descr);
36412@@ -495,7 +495,7 @@ static void rx_complete (amb_dev * dev, rx_out * rx) {
36413 dump_skb ("<<<", vc, skb);
36414
36415 // VC layer stats
36416- atomic_inc(&atm_vcc->stats->rx);
36417+ atomic_inc_unchecked(&atm_vcc->stats->rx);
36418 __net_timestamp(skb);
36419 // end of our responsibility
36420 atm_vcc->push (atm_vcc, skb);
36421@@ -510,7 +510,7 @@ static void rx_complete (amb_dev * dev, rx_out * rx) {
36422 } else {
36423 PRINTK (KERN_INFO, "dropped over-size frame");
36424 // should we count this?
36425- atomic_inc(&atm_vcc->stats->rx_drop);
36426+ atomic_inc_unchecked(&atm_vcc->stats->rx_drop);
36427 }
36428
36429 } else {
36430@@ -1338,7 +1338,7 @@ static int amb_send (struct atm_vcc * atm_vcc, struct sk_buff * skb) {
36431 }
36432
36433 if (check_area (skb->data, skb->len)) {
36434- atomic_inc(&atm_vcc->stats->tx_err);
36435+ atomic_inc_unchecked(&atm_vcc->stats->tx_err);
36436 return -ENOMEM; // ?
36437 }
36438
36439diff --git a/drivers/atm/atmtcp.c b/drivers/atm/atmtcp.c
36440index 0e3f8f9..765a7a5 100644
36441--- a/drivers/atm/atmtcp.c
36442+++ b/drivers/atm/atmtcp.c
36443@@ -206,7 +206,7 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb)
36444 if (vcc->pop) vcc->pop(vcc,skb);
36445 else dev_kfree_skb(skb);
36446 if (dev_data) return 0;
36447- atomic_inc(&vcc->stats->tx_err);
36448+ atomic_inc_unchecked(&vcc->stats->tx_err);
36449 return -ENOLINK;
36450 }
36451 size = skb->len+sizeof(struct atmtcp_hdr);
36452@@ -214,7 +214,7 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb)
36453 if (!new_skb) {
36454 if (vcc->pop) vcc->pop(vcc,skb);
36455 else dev_kfree_skb(skb);
36456- atomic_inc(&vcc->stats->tx_err);
36457+ atomic_inc_unchecked(&vcc->stats->tx_err);
36458 return -ENOBUFS;
36459 }
36460 hdr = (void *) skb_put(new_skb,sizeof(struct atmtcp_hdr));
36461@@ -225,8 +225,8 @@ static int atmtcp_v_send(struct atm_vcc *vcc,struct sk_buff *skb)
36462 if (vcc->pop) vcc->pop(vcc,skb);
36463 else dev_kfree_skb(skb);
36464 out_vcc->push(out_vcc,new_skb);
36465- atomic_inc(&vcc->stats->tx);
36466- atomic_inc(&out_vcc->stats->rx);
36467+ atomic_inc_unchecked(&vcc->stats->tx);
36468+ atomic_inc_unchecked(&out_vcc->stats->rx);
36469 return 0;
36470 }
36471
36472@@ -299,7 +299,7 @@ static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb)
36473 out_vcc = find_vcc(dev, ntohs(hdr->vpi), ntohs(hdr->vci));
36474 read_unlock(&vcc_sklist_lock);
36475 if (!out_vcc) {
36476- atomic_inc(&vcc->stats->tx_err);
36477+ atomic_inc_unchecked(&vcc->stats->tx_err);
36478 goto done;
36479 }
36480 skb_pull(skb,sizeof(struct atmtcp_hdr));
36481@@ -311,8 +311,8 @@ static int atmtcp_c_send(struct atm_vcc *vcc,struct sk_buff *skb)
36482 __net_timestamp(new_skb);
36483 skb_copy_from_linear_data(skb, skb_put(new_skb, skb->len), skb->len);
36484 out_vcc->push(out_vcc,new_skb);
36485- atomic_inc(&vcc->stats->tx);
36486- atomic_inc(&out_vcc->stats->rx);
36487+ atomic_inc_unchecked(&vcc->stats->tx);
36488+ atomic_inc_unchecked(&out_vcc->stats->rx);
36489 done:
36490 if (vcc->pop) vcc->pop(vcc,skb);
36491 else dev_kfree_skb(skb);
36492diff --git a/drivers/atm/eni.c b/drivers/atm/eni.c
36493index b1955ba..b179940 100644
36494--- a/drivers/atm/eni.c
36495+++ b/drivers/atm/eni.c
36496@@ -522,7 +522,7 @@ static int rx_aal0(struct atm_vcc *vcc)
36497 DPRINTK(DEV_LABEL "(itf %d): trashing empty cell\n",
36498 vcc->dev->number);
36499 length = 0;
36500- atomic_inc(&vcc->stats->rx_err);
36501+ atomic_inc_unchecked(&vcc->stats->rx_err);
36502 }
36503 else {
36504 length = ATM_CELL_SIZE-1; /* no HEC */
36505@@ -577,7 +577,7 @@ static int rx_aal5(struct atm_vcc *vcc)
36506 size);
36507 }
36508 eff = length = 0;
36509- atomic_inc(&vcc->stats->rx_err);
36510+ atomic_inc_unchecked(&vcc->stats->rx_err);
36511 }
36512 else {
36513 size = (descr & MID_RED_COUNT)*(ATM_CELL_PAYLOAD >> 2);
36514@@ -594,7 +594,7 @@ static int rx_aal5(struct atm_vcc *vcc)
36515 "(VCI=%d,length=%ld,size=%ld (descr 0x%lx))\n",
36516 vcc->dev->number,vcc->vci,length,size << 2,descr);
36517 length = eff = 0;
36518- atomic_inc(&vcc->stats->rx_err);
36519+ atomic_inc_unchecked(&vcc->stats->rx_err);
36520 }
36521 }
36522 skb = eff ? atm_alloc_charge(vcc,eff << 2,GFP_ATOMIC) : NULL;
36523@@ -767,7 +767,7 @@ rx_dequeued++;
36524 vcc->push(vcc,skb);
36525 pushed++;
36526 }
36527- atomic_inc(&vcc->stats->rx);
36528+ atomic_inc_unchecked(&vcc->stats->rx);
36529 }
36530 wake_up(&eni_dev->rx_wait);
36531 }
36532@@ -1227,7 +1227,7 @@ static void dequeue_tx(struct atm_dev *dev)
36533 PCI_DMA_TODEVICE);
36534 if (vcc->pop) vcc->pop(vcc,skb);
36535 else dev_kfree_skb_irq(skb);
36536- atomic_inc(&vcc->stats->tx);
36537+ atomic_inc_unchecked(&vcc->stats->tx);
36538 wake_up(&eni_dev->tx_wait);
36539 dma_complete++;
36540 }
36541diff --git a/drivers/atm/firestream.c b/drivers/atm/firestream.c
36542index 82f2ae0..f205c02 100644
36543--- a/drivers/atm/firestream.c
36544+++ b/drivers/atm/firestream.c
36545@@ -749,7 +749,7 @@ static void process_txdone_queue (struct fs_dev *dev, struct queue *q)
36546 }
36547 }
36548
36549- atomic_inc(&ATM_SKB(skb)->vcc->stats->tx);
36550+ atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx);
36551
36552 fs_dprintk (FS_DEBUG_TXMEM, "i");
36553 fs_dprintk (FS_DEBUG_ALLOC, "Free t-skb: %p\n", skb);
36554@@ -816,7 +816,7 @@ static void process_incoming (struct fs_dev *dev, struct queue *q)
36555 #endif
36556 skb_put (skb, qe->p1 & 0xffff);
36557 ATM_SKB(skb)->vcc = atm_vcc;
36558- atomic_inc(&atm_vcc->stats->rx);
36559+ atomic_inc_unchecked(&atm_vcc->stats->rx);
36560 __net_timestamp(skb);
36561 fs_dprintk (FS_DEBUG_ALLOC, "Free rec-skb: %p (pushed)\n", skb);
36562 atm_vcc->push (atm_vcc, skb);
36563@@ -837,12 +837,12 @@ static void process_incoming (struct fs_dev *dev, struct queue *q)
36564 kfree (pe);
36565 }
36566 if (atm_vcc)
36567- atomic_inc(&atm_vcc->stats->rx_drop);
36568+ atomic_inc_unchecked(&atm_vcc->stats->rx_drop);
36569 break;
36570 case 0x1f: /* Reassembly abort: no buffers. */
36571 /* Silently increment error counter. */
36572 if (atm_vcc)
36573- atomic_inc(&atm_vcc->stats->rx_drop);
36574+ atomic_inc_unchecked(&atm_vcc->stats->rx_drop);
36575 break;
36576 default: /* Hmm. Haven't written the code to handle the others yet... -- REW */
36577 printk (KERN_WARNING "Don't know what to do with RX status %x: %s.\n",
36578diff --git a/drivers/atm/fore200e.c b/drivers/atm/fore200e.c
36579index 204814e..cede831 100644
36580--- a/drivers/atm/fore200e.c
36581+++ b/drivers/atm/fore200e.c
36582@@ -931,9 +931,9 @@ fore200e_tx_irq(struct fore200e* fore200e)
36583 #endif
36584 /* check error condition */
36585 if (*entry->status & STATUS_ERROR)
36586- atomic_inc(&vcc->stats->tx_err);
36587+ atomic_inc_unchecked(&vcc->stats->tx_err);
36588 else
36589- atomic_inc(&vcc->stats->tx);
36590+ atomic_inc_unchecked(&vcc->stats->tx);
36591 }
36592 }
36593
36594@@ -1082,7 +1082,7 @@ fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rp
36595 if (skb == NULL) {
36596 DPRINTK(2, "unable to alloc new skb, rx PDU length = %d\n", pdu_len);
36597
36598- atomic_inc(&vcc->stats->rx_drop);
36599+ atomic_inc_unchecked(&vcc->stats->rx_drop);
36600 return -ENOMEM;
36601 }
36602
36603@@ -1125,14 +1125,14 @@ fore200e_push_rpd(struct fore200e* fore200e, struct atm_vcc* vcc, struct rpd* rp
36604
36605 dev_kfree_skb_any(skb);
36606
36607- atomic_inc(&vcc->stats->rx_drop);
36608+ atomic_inc_unchecked(&vcc->stats->rx_drop);
36609 return -ENOMEM;
36610 }
36611
36612 ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
36613
36614 vcc->push(vcc, skb);
36615- atomic_inc(&vcc->stats->rx);
36616+ atomic_inc_unchecked(&vcc->stats->rx);
36617
36618 ASSERT(atomic_read(&sk_atm(vcc)->sk_wmem_alloc) >= 0);
36619
36620@@ -1210,7 +1210,7 @@ fore200e_rx_irq(struct fore200e* fore200e)
36621 DPRINTK(2, "damaged PDU on %d.%d.%d\n",
36622 fore200e->atm_dev->number,
36623 entry->rpd->atm_header.vpi, entry->rpd->atm_header.vci);
36624- atomic_inc(&vcc->stats->rx_err);
36625+ atomic_inc_unchecked(&vcc->stats->rx_err);
36626 }
36627 }
36628
36629@@ -1655,7 +1655,7 @@ fore200e_send(struct atm_vcc *vcc, struct sk_buff *skb)
36630 goto retry_here;
36631 }
36632
36633- atomic_inc(&vcc->stats->tx_err);
36634+ atomic_inc_unchecked(&vcc->stats->tx_err);
36635
36636 fore200e->tx_sat++;
36637 DPRINTK(2, "tx queue of device %s is saturated, PDU dropped - heartbeat is %08x\n",
36638diff --git a/drivers/atm/he.c b/drivers/atm/he.c
36639index aa6be26..f70a785 100644
36640--- a/drivers/atm/he.c
36641+++ b/drivers/atm/he.c
36642@@ -1690,7 +1690,7 @@ he_service_rbrq(struct he_dev *he_dev, int group)
36643
36644 if (RBRQ_HBUF_ERR(he_dev->rbrq_head)) {
36645 hprintk("HBUF_ERR! (cid 0x%x)\n", cid);
36646- atomic_inc(&vcc->stats->rx_drop);
36647+ atomic_inc_unchecked(&vcc->stats->rx_drop);
36648 goto return_host_buffers;
36649 }
36650
36651@@ -1717,7 +1717,7 @@ he_service_rbrq(struct he_dev *he_dev, int group)
36652 RBRQ_LEN_ERR(he_dev->rbrq_head)
36653 ? "LEN_ERR" : "",
36654 vcc->vpi, vcc->vci);
36655- atomic_inc(&vcc->stats->rx_err);
36656+ atomic_inc_unchecked(&vcc->stats->rx_err);
36657 goto return_host_buffers;
36658 }
36659
36660@@ -1769,7 +1769,7 @@ he_service_rbrq(struct he_dev *he_dev, int group)
36661 vcc->push(vcc, skb);
36662 spin_lock(&he_dev->global_lock);
36663
36664- atomic_inc(&vcc->stats->rx);
36665+ atomic_inc_unchecked(&vcc->stats->rx);
36666
36667 return_host_buffers:
36668 ++pdus_assembled;
36669@@ -2095,7 +2095,7 @@ __enqueue_tpd(struct he_dev *he_dev, struct he_tpd *tpd, unsigned cid)
36670 tpd->vcc->pop(tpd->vcc, tpd->skb);
36671 else
36672 dev_kfree_skb_any(tpd->skb);
36673- atomic_inc(&tpd->vcc->stats->tx_err);
36674+ atomic_inc_unchecked(&tpd->vcc->stats->tx_err);
36675 }
36676 pci_pool_free(he_dev->tpd_pool, tpd, TPD_ADDR(tpd->status));
36677 return;
36678@@ -2507,7 +2507,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb)
36679 vcc->pop(vcc, skb);
36680 else
36681 dev_kfree_skb_any(skb);
36682- atomic_inc(&vcc->stats->tx_err);
36683+ atomic_inc_unchecked(&vcc->stats->tx_err);
36684 return -EINVAL;
36685 }
36686
36687@@ -2518,7 +2518,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb)
36688 vcc->pop(vcc, skb);
36689 else
36690 dev_kfree_skb_any(skb);
36691- atomic_inc(&vcc->stats->tx_err);
36692+ atomic_inc_unchecked(&vcc->stats->tx_err);
36693 return -EINVAL;
36694 }
36695 #endif
36696@@ -2530,7 +2530,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb)
36697 vcc->pop(vcc, skb);
36698 else
36699 dev_kfree_skb_any(skb);
36700- atomic_inc(&vcc->stats->tx_err);
36701+ atomic_inc_unchecked(&vcc->stats->tx_err);
36702 spin_unlock_irqrestore(&he_dev->global_lock, flags);
36703 return -ENOMEM;
36704 }
36705@@ -2572,7 +2572,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb)
36706 vcc->pop(vcc, skb);
36707 else
36708 dev_kfree_skb_any(skb);
36709- atomic_inc(&vcc->stats->tx_err);
36710+ atomic_inc_unchecked(&vcc->stats->tx_err);
36711 spin_unlock_irqrestore(&he_dev->global_lock, flags);
36712 return -ENOMEM;
36713 }
36714@@ -2603,7 +2603,7 @@ he_send(struct atm_vcc *vcc, struct sk_buff *skb)
36715 __enqueue_tpd(he_dev, tpd, cid);
36716 spin_unlock_irqrestore(&he_dev->global_lock, flags);
36717
36718- atomic_inc(&vcc->stats->tx);
36719+ atomic_inc_unchecked(&vcc->stats->tx);
36720
36721 return 0;
36722 }
36723diff --git a/drivers/atm/horizon.c b/drivers/atm/horizon.c
36724index 1dc0519..1aadaf7 100644
36725--- a/drivers/atm/horizon.c
36726+++ b/drivers/atm/horizon.c
36727@@ -1034,7 +1034,7 @@ static void rx_schedule (hrz_dev * dev, int irq) {
36728 {
36729 struct atm_vcc * vcc = ATM_SKB(skb)->vcc;
36730 // VC layer stats
36731- atomic_inc(&vcc->stats->rx);
36732+ atomic_inc_unchecked(&vcc->stats->rx);
36733 __net_timestamp(skb);
36734 // end of our responsibility
36735 vcc->push (vcc, skb);
36736@@ -1186,7 +1186,7 @@ static void tx_schedule (hrz_dev * const dev, int irq) {
36737 dev->tx_iovec = NULL;
36738
36739 // VC layer stats
36740- atomic_inc(&ATM_SKB(skb)->vcc->stats->tx);
36741+ atomic_inc_unchecked(&ATM_SKB(skb)->vcc->stats->tx);
36742
36743 // free the skb
36744 hrz_kfree_skb (skb);
36745diff --git a/drivers/atm/idt77252.c b/drivers/atm/idt77252.c
36746index 1bdf104..9dc44b1 100644
36747--- a/drivers/atm/idt77252.c
36748+++ b/drivers/atm/idt77252.c
36749@@ -812,7 +812,7 @@ drain_scq(struct idt77252_dev *card, struct vc_map *vc)
36750 else
36751 dev_kfree_skb(skb);
36752
36753- atomic_inc(&vcc->stats->tx);
36754+ atomic_inc_unchecked(&vcc->stats->tx);
36755 }
36756
36757 atomic_dec(&scq->used);
36758@@ -1075,13 +1075,13 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
36759 if ((sb = dev_alloc_skb(64)) == NULL) {
36760 printk("%s: Can't allocate buffers for aal0.\n",
36761 card->name);
36762- atomic_add(i, &vcc->stats->rx_drop);
36763+ atomic_add_unchecked(i, &vcc->stats->rx_drop);
36764 break;
36765 }
36766 if (!atm_charge(vcc, sb->truesize)) {
36767 RXPRINTK("%s: atm_charge() dropped aal0 packets.\n",
36768 card->name);
36769- atomic_add(i - 1, &vcc->stats->rx_drop);
36770+ atomic_add_unchecked(i - 1, &vcc->stats->rx_drop);
36771 dev_kfree_skb(sb);
36772 break;
36773 }
36774@@ -1098,7 +1098,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
36775 ATM_SKB(sb)->vcc = vcc;
36776 __net_timestamp(sb);
36777 vcc->push(vcc, sb);
36778- atomic_inc(&vcc->stats->rx);
36779+ atomic_inc_unchecked(&vcc->stats->rx);
36780
36781 cell += ATM_CELL_PAYLOAD;
36782 }
36783@@ -1135,13 +1135,13 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
36784 "(CDC: %08x)\n",
36785 card->name, len, rpp->len, readl(SAR_REG_CDC));
36786 recycle_rx_pool_skb(card, rpp);
36787- atomic_inc(&vcc->stats->rx_err);
36788+ atomic_inc_unchecked(&vcc->stats->rx_err);
36789 return;
36790 }
36791 if (stat & SAR_RSQE_CRC) {
36792 RXPRINTK("%s: AAL5 CRC error.\n", card->name);
36793 recycle_rx_pool_skb(card, rpp);
36794- atomic_inc(&vcc->stats->rx_err);
36795+ atomic_inc_unchecked(&vcc->stats->rx_err);
36796 return;
36797 }
36798 if (skb_queue_len(&rpp->queue) > 1) {
36799@@ -1152,7 +1152,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
36800 RXPRINTK("%s: Can't alloc RX skb.\n",
36801 card->name);
36802 recycle_rx_pool_skb(card, rpp);
36803- atomic_inc(&vcc->stats->rx_err);
36804+ atomic_inc_unchecked(&vcc->stats->rx_err);
36805 return;
36806 }
36807 if (!atm_charge(vcc, skb->truesize)) {
36808@@ -1171,7 +1171,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
36809 __net_timestamp(skb);
36810
36811 vcc->push(vcc, skb);
36812- atomic_inc(&vcc->stats->rx);
36813+ atomic_inc_unchecked(&vcc->stats->rx);
36814
36815 return;
36816 }
36817@@ -1193,7 +1193,7 @@ dequeue_rx(struct idt77252_dev *card, struct rsq_entry *rsqe)
36818 __net_timestamp(skb);
36819
36820 vcc->push(vcc, skb);
36821- atomic_inc(&vcc->stats->rx);
36822+ atomic_inc_unchecked(&vcc->stats->rx);
36823
36824 if (skb->truesize > SAR_FB_SIZE_3)
36825 add_rx_skb(card, 3, SAR_FB_SIZE_3, 1);
36826@@ -1304,14 +1304,14 @@ idt77252_rx_raw(struct idt77252_dev *card)
36827 if (vcc->qos.aal != ATM_AAL0) {
36828 RPRINTK("%s: raw cell for non AAL0 vc %u.%u\n",
36829 card->name, vpi, vci);
36830- atomic_inc(&vcc->stats->rx_drop);
36831+ atomic_inc_unchecked(&vcc->stats->rx_drop);
36832 goto drop;
36833 }
36834
36835 if ((sb = dev_alloc_skb(64)) == NULL) {
36836 printk("%s: Can't allocate buffers for AAL0.\n",
36837 card->name);
36838- atomic_inc(&vcc->stats->rx_err);
36839+ atomic_inc_unchecked(&vcc->stats->rx_err);
36840 goto drop;
36841 }
36842
36843@@ -1330,7 +1330,7 @@ idt77252_rx_raw(struct idt77252_dev *card)
36844 ATM_SKB(sb)->vcc = vcc;
36845 __net_timestamp(sb);
36846 vcc->push(vcc, sb);
36847- atomic_inc(&vcc->stats->rx);
36848+ atomic_inc_unchecked(&vcc->stats->rx);
36849
36850 drop:
36851 skb_pull(queue, 64);
36852@@ -1955,13 +1955,13 @@ idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam)
36853
36854 if (vc == NULL) {
36855 printk("%s: NULL connection in send().\n", card->name);
36856- atomic_inc(&vcc->stats->tx_err);
36857+ atomic_inc_unchecked(&vcc->stats->tx_err);
36858 dev_kfree_skb(skb);
36859 return -EINVAL;
36860 }
36861 if (!test_bit(VCF_TX, &vc->flags)) {
36862 printk("%s: Trying to transmit on a non-tx VC.\n", card->name);
36863- atomic_inc(&vcc->stats->tx_err);
36864+ atomic_inc_unchecked(&vcc->stats->tx_err);
36865 dev_kfree_skb(skb);
36866 return -EINVAL;
36867 }
36868@@ -1973,14 +1973,14 @@ idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam)
36869 break;
36870 default:
36871 printk("%s: Unsupported AAL: %d\n", card->name, vcc->qos.aal);
36872- atomic_inc(&vcc->stats->tx_err);
36873+ atomic_inc_unchecked(&vcc->stats->tx_err);
36874 dev_kfree_skb(skb);
36875 return -EINVAL;
36876 }
36877
36878 if (skb_shinfo(skb)->nr_frags != 0) {
36879 printk("%s: No scatter-gather yet.\n", card->name);
36880- atomic_inc(&vcc->stats->tx_err);
36881+ atomic_inc_unchecked(&vcc->stats->tx_err);
36882 dev_kfree_skb(skb);
36883 return -EINVAL;
36884 }
36885@@ -1988,7 +1988,7 @@ idt77252_send_skb(struct atm_vcc *vcc, struct sk_buff *skb, int oam)
36886
36887 err = queue_skb(card, vc, skb, oam);
36888 if (err) {
36889- atomic_inc(&vcc->stats->tx_err);
36890+ atomic_inc_unchecked(&vcc->stats->tx_err);
36891 dev_kfree_skb(skb);
36892 return err;
36893 }
36894@@ -2011,7 +2011,7 @@ idt77252_send_oam(struct atm_vcc *vcc, void *cell, int flags)
36895 skb = dev_alloc_skb(64);
36896 if (!skb) {
36897 printk("%s: Out of memory in send_oam().\n", card->name);
36898- atomic_inc(&vcc->stats->tx_err);
36899+ atomic_inc_unchecked(&vcc->stats->tx_err);
36900 return -ENOMEM;
36901 }
36902 atomic_add(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc);
36903diff --git a/drivers/atm/iphase.c b/drivers/atm/iphase.c
36904index 4217f29..88f547a 100644
36905--- a/drivers/atm/iphase.c
36906+++ b/drivers/atm/iphase.c
36907@@ -1145,7 +1145,7 @@ static int rx_pkt(struct atm_dev *dev)
36908 status = (u_short) (buf_desc_ptr->desc_mode);
36909 if (status & (RX_CER | RX_PTE | RX_OFL))
36910 {
36911- atomic_inc(&vcc->stats->rx_err);
36912+ atomic_inc_unchecked(&vcc->stats->rx_err);
36913 IF_ERR(printk("IA: bad packet, dropping it");)
36914 if (status & RX_CER) {
36915 IF_ERR(printk(" cause: packet CRC error\n");)
36916@@ -1168,7 +1168,7 @@ static int rx_pkt(struct atm_dev *dev)
36917 len = dma_addr - buf_addr;
36918 if (len > iadev->rx_buf_sz) {
36919 printk("Over %d bytes sdu received, dropped!!!\n", iadev->rx_buf_sz);
36920- atomic_inc(&vcc->stats->rx_err);
36921+ atomic_inc_unchecked(&vcc->stats->rx_err);
36922 goto out_free_desc;
36923 }
36924
36925@@ -1318,7 +1318,7 @@ static void rx_dle_intr(struct atm_dev *dev)
36926 ia_vcc = INPH_IA_VCC(vcc);
36927 if (ia_vcc == NULL)
36928 {
36929- atomic_inc(&vcc->stats->rx_err);
36930+ atomic_inc_unchecked(&vcc->stats->rx_err);
36931 atm_return(vcc, skb->truesize);
36932 dev_kfree_skb_any(skb);
36933 goto INCR_DLE;
36934@@ -1330,7 +1330,7 @@ static void rx_dle_intr(struct atm_dev *dev)
36935 if ((length > iadev->rx_buf_sz) || (length >
36936 (skb->len - sizeof(struct cpcs_trailer))))
36937 {
36938- atomic_inc(&vcc->stats->rx_err);
36939+ atomic_inc_unchecked(&vcc->stats->rx_err);
36940 IF_ERR(printk("rx_dle_intr: Bad AAL5 trailer %d (skb len %d)",
36941 length, skb->len);)
36942 atm_return(vcc, skb->truesize);
36943@@ -1346,7 +1346,7 @@ static void rx_dle_intr(struct atm_dev *dev)
36944
36945 IF_RX(printk("rx_dle_intr: skb push");)
36946 vcc->push(vcc,skb);
36947- atomic_inc(&vcc->stats->rx);
36948+ atomic_inc_unchecked(&vcc->stats->rx);
36949 iadev->rx_pkt_cnt++;
36950 }
36951 INCR_DLE:
36952@@ -2826,15 +2826,15 @@ static int ia_ioctl(struct atm_dev *dev, unsigned int cmd, void __user *arg)
36953 {
36954 struct k_sonet_stats *stats;
36955 stats = &PRIV(_ia_dev[board])->sonet_stats;
36956- printk("section_bip: %d\n", atomic_read(&stats->section_bip));
36957- printk("line_bip : %d\n", atomic_read(&stats->line_bip));
36958- printk("path_bip : %d\n", atomic_read(&stats->path_bip));
36959- printk("line_febe : %d\n", atomic_read(&stats->line_febe));
36960- printk("path_febe : %d\n", atomic_read(&stats->path_febe));
36961- printk("corr_hcs : %d\n", atomic_read(&stats->corr_hcs));
36962- printk("uncorr_hcs : %d\n", atomic_read(&stats->uncorr_hcs));
36963- printk("tx_cells : %d\n", atomic_read(&stats->tx_cells));
36964- printk("rx_cells : %d\n", atomic_read(&stats->rx_cells));
36965+ printk("section_bip: %d\n", atomic_read_unchecked(&stats->section_bip));
36966+ printk("line_bip : %d\n", atomic_read_unchecked(&stats->line_bip));
36967+ printk("path_bip : %d\n", atomic_read_unchecked(&stats->path_bip));
36968+ printk("line_febe : %d\n", atomic_read_unchecked(&stats->line_febe));
36969+ printk("path_febe : %d\n", atomic_read_unchecked(&stats->path_febe));
36970+ printk("corr_hcs : %d\n", atomic_read_unchecked(&stats->corr_hcs));
36971+ printk("uncorr_hcs : %d\n", atomic_read_unchecked(&stats->uncorr_hcs));
36972+ printk("tx_cells : %d\n", atomic_read_unchecked(&stats->tx_cells));
36973+ printk("rx_cells : %d\n", atomic_read_unchecked(&stats->rx_cells));
36974 }
36975 ia_cmds.status = 0;
36976 break;
36977@@ -2939,7 +2939,7 @@ static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
36978 if ((desc == 0) || (desc > iadev->num_tx_desc))
36979 {
36980 IF_ERR(printk(DEV_LABEL "invalid desc for send: %d\n", desc);)
36981- atomic_inc(&vcc->stats->tx);
36982+ atomic_inc_unchecked(&vcc->stats->tx);
36983 if (vcc->pop)
36984 vcc->pop(vcc, skb);
36985 else
36986@@ -3044,14 +3044,14 @@ static int ia_pkt_tx (struct atm_vcc *vcc, struct sk_buff *skb) {
36987 ATM_DESC(skb) = vcc->vci;
36988 skb_queue_tail(&iadev->tx_dma_q, skb);
36989
36990- atomic_inc(&vcc->stats->tx);
36991+ atomic_inc_unchecked(&vcc->stats->tx);
36992 iadev->tx_pkt_cnt++;
36993 /* Increment transaction counter */
36994 writel(2, iadev->dma+IPHASE5575_TX_COUNTER);
36995
36996 #if 0
36997 /* add flow control logic */
36998- if (atomic_read(&vcc->stats->tx) % 20 == 0) {
36999+ if (atomic_read_unchecked(&vcc->stats->tx) % 20 == 0) {
37000 if (iavcc->vc_desc_cnt > 10) {
37001 vcc->tx_quota = vcc->tx_quota * 3 / 4;
37002 printk("Tx1: vcc->tx_quota = %d \n", (u32)vcc->tx_quota );
37003diff --git a/drivers/atm/lanai.c b/drivers/atm/lanai.c
37004index fa7d701..1e404c7 100644
37005--- a/drivers/atm/lanai.c
37006+++ b/drivers/atm/lanai.c
37007@@ -1303,7 +1303,7 @@ static void lanai_send_one_aal5(struct lanai_dev *lanai,
37008 vcc_tx_add_aal5_trailer(lvcc, skb->len, 0, 0);
37009 lanai_endtx(lanai, lvcc);
37010 lanai_free_skb(lvcc->tx.atmvcc, skb);
37011- atomic_inc(&lvcc->tx.atmvcc->stats->tx);
37012+ atomic_inc_unchecked(&lvcc->tx.atmvcc->stats->tx);
37013 }
37014
37015 /* Try to fill the buffer - don't call unless there is backlog */
37016@@ -1426,7 +1426,7 @@ static void vcc_rx_aal5(struct lanai_vcc *lvcc, int endptr)
37017 ATM_SKB(skb)->vcc = lvcc->rx.atmvcc;
37018 __net_timestamp(skb);
37019 lvcc->rx.atmvcc->push(lvcc->rx.atmvcc, skb);
37020- atomic_inc(&lvcc->rx.atmvcc->stats->rx);
37021+ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx);
37022 out:
37023 lvcc->rx.buf.ptr = end;
37024 cardvcc_write(lvcc, endptr, vcc_rxreadptr);
37025@@ -1667,7 +1667,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s)
37026 DPRINTK("(itf %d) got RX service entry 0x%X for non-AAL5 "
37027 "vcc %d\n", lanai->number, (unsigned int) s, vci);
37028 lanai->stats.service_rxnotaal5++;
37029- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
37030+ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err);
37031 return 0;
37032 }
37033 if (likely(!(s & (SERVICE_TRASH | SERVICE_STREAM | SERVICE_CRCERR)))) {
37034@@ -1679,7 +1679,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s)
37035 int bytes;
37036 read_unlock(&vcc_sklist_lock);
37037 DPRINTK("got trashed rx pdu on vci %d\n", vci);
37038- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
37039+ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err);
37040 lvcc->stats.x.aal5.service_trash++;
37041 bytes = (SERVICE_GET_END(s) * 16) -
37042 (((unsigned long) lvcc->rx.buf.ptr) -
37043@@ -1691,7 +1691,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s)
37044 }
37045 if (s & SERVICE_STREAM) {
37046 read_unlock(&vcc_sklist_lock);
37047- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
37048+ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err);
37049 lvcc->stats.x.aal5.service_stream++;
37050 printk(KERN_ERR DEV_LABEL "(itf %d): Got AAL5 stream "
37051 "PDU on VCI %d!\n", lanai->number, vci);
37052@@ -1699,7 +1699,7 @@ static int handle_service(struct lanai_dev *lanai, u32 s)
37053 return 0;
37054 }
37055 DPRINTK("got rx crc error on vci %d\n", vci);
37056- atomic_inc(&lvcc->rx.atmvcc->stats->rx_err);
37057+ atomic_inc_unchecked(&lvcc->rx.atmvcc->stats->rx_err);
37058 lvcc->stats.x.aal5.service_rxcrc++;
37059 lvcc->rx.buf.ptr = &lvcc->rx.buf.start[SERVICE_GET_END(s) * 4];
37060 cardvcc_write(lvcc, SERVICE_GET_END(s), vcc_rxreadptr);
37061diff --git a/drivers/atm/nicstar.c b/drivers/atm/nicstar.c
37062index 9988ac9..7c52585 100644
37063--- a/drivers/atm/nicstar.c
37064+++ b/drivers/atm/nicstar.c
37065@@ -1640,7 +1640,7 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb)
37066 if ((vc = (vc_map *) vcc->dev_data) == NULL) {
37067 printk("nicstar%d: vcc->dev_data == NULL on ns_send().\n",
37068 card->index);
37069- atomic_inc(&vcc->stats->tx_err);
37070+ atomic_inc_unchecked(&vcc->stats->tx_err);
37071 dev_kfree_skb_any(skb);
37072 return -EINVAL;
37073 }
37074@@ -1648,7 +1648,7 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb)
37075 if (!vc->tx) {
37076 printk("nicstar%d: Trying to transmit on a non-tx VC.\n",
37077 card->index);
37078- atomic_inc(&vcc->stats->tx_err);
37079+ atomic_inc_unchecked(&vcc->stats->tx_err);
37080 dev_kfree_skb_any(skb);
37081 return -EINVAL;
37082 }
37083@@ -1656,14 +1656,14 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb)
37084 if (vcc->qos.aal != ATM_AAL5 && vcc->qos.aal != ATM_AAL0) {
37085 printk("nicstar%d: Only AAL0 and AAL5 are supported.\n",
37086 card->index);
37087- atomic_inc(&vcc->stats->tx_err);
37088+ atomic_inc_unchecked(&vcc->stats->tx_err);
37089 dev_kfree_skb_any(skb);
37090 return -EINVAL;
37091 }
37092
37093 if (skb_shinfo(skb)->nr_frags != 0) {
37094 printk("nicstar%d: No scatter-gather yet.\n", card->index);
37095- atomic_inc(&vcc->stats->tx_err);
37096+ atomic_inc_unchecked(&vcc->stats->tx_err);
37097 dev_kfree_skb_any(skb);
37098 return -EINVAL;
37099 }
37100@@ -1711,11 +1711,11 @@ static int ns_send(struct atm_vcc *vcc, struct sk_buff *skb)
37101 }
37102
37103 if (push_scqe(card, vc, scq, &scqe, skb) != 0) {
37104- atomic_inc(&vcc->stats->tx_err);
37105+ atomic_inc_unchecked(&vcc->stats->tx_err);
37106 dev_kfree_skb_any(skb);
37107 return -EIO;
37108 }
37109- atomic_inc(&vcc->stats->tx);
37110+ atomic_inc_unchecked(&vcc->stats->tx);
37111
37112 return 0;
37113 }
37114@@ -2032,14 +2032,14 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37115 printk
37116 ("nicstar%d: Can't allocate buffers for aal0.\n",
37117 card->index);
37118- atomic_add(i, &vcc->stats->rx_drop);
37119+ atomic_add_unchecked(i, &vcc->stats->rx_drop);
37120 break;
37121 }
37122 if (!atm_charge(vcc, sb->truesize)) {
37123 RXPRINTK
37124 ("nicstar%d: atm_charge() dropped aal0 packets.\n",
37125 card->index);
37126- atomic_add(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */
37127+ atomic_add_unchecked(i - 1, &vcc->stats->rx_drop); /* already increased by 1 */
37128 dev_kfree_skb_any(sb);
37129 break;
37130 }
37131@@ -2054,7 +2054,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37132 ATM_SKB(sb)->vcc = vcc;
37133 __net_timestamp(sb);
37134 vcc->push(vcc, sb);
37135- atomic_inc(&vcc->stats->rx);
37136+ atomic_inc_unchecked(&vcc->stats->rx);
37137 cell += ATM_CELL_PAYLOAD;
37138 }
37139
37140@@ -2071,7 +2071,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37141 if (iovb == NULL) {
37142 printk("nicstar%d: Out of iovec buffers.\n",
37143 card->index);
37144- atomic_inc(&vcc->stats->rx_drop);
37145+ atomic_inc_unchecked(&vcc->stats->rx_drop);
37146 recycle_rx_buf(card, skb);
37147 return;
37148 }
37149@@ -2095,7 +2095,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37150 small or large buffer itself. */
37151 } else if (NS_PRV_IOVCNT(iovb) >= NS_MAX_IOVECS) {
37152 printk("nicstar%d: received too big AAL5 SDU.\n", card->index);
37153- atomic_inc(&vcc->stats->rx_err);
37154+ atomic_inc_unchecked(&vcc->stats->rx_err);
37155 recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
37156 NS_MAX_IOVECS);
37157 NS_PRV_IOVCNT(iovb) = 0;
37158@@ -2115,7 +2115,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37159 ("nicstar%d: Expected a small buffer, and this is not one.\n",
37160 card->index);
37161 which_list(card, skb);
37162- atomic_inc(&vcc->stats->rx_err);
37163+ atomic_inc_unchecked(&vcc->stats->rx_err);
37164 recycle_rx_buf(card, skb);
37165 vc->rx_iov = NULL;
37166 recycle_iov_buf(card, iovb);
37167@@ -2128,7 +2128,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37168 ("nicstar%d: Expected a large buffer, and this is not one.\n",
37169 card->index);
37170 which_list(card, skb);
37171- atomic_inc(&vcc->stats->rx_err);
37172+ atomic_inc_unchecked(&vcc->stats->rx_err);
37173 recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
37174 NS_PRV_IOVCNT(iovb));
37175 vc->rx_iov = NULL;
37176@@ -2151,7 +2151,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37177 printk(" - PDU size mismatch.\n");
37178 else
37179 printk(".\n");
37180- atomic_inc(&vcc->stats->rx_err);
37181+ atomic_inc_unchecked(&vcc->stats->rx_err);
37182 recycle_iovec_rx_bufs(card, (struct iovec *)iovb->data,
37183 NS_PRV_IOVCNT(iovb));
37184 vc->rx_iov = NULL;
37185@@ -2165,7 +2165,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37186 /* skb points to a small buffer */
37187 if (!atm_charge(vcc, skb->truesize)) {
37188 push_rxbufs(card, skb);
37189- atomic_inc(&vcc->stats->rx_drop);
37190+ atomic_inc_unchecked(&vcc->stats->rx_drop);
37191 } else {
37192 skb_put(skb, len);
37193 dequeue_sm_buf(card, skb);
37194@@ -2175,7 +2175,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37195 ATM_SKB(skb)->vcc = vcc;
37196 __net_timestamp(skb);
37197 vcc->push(vcc, skb);
37198- atomic_inc(&vcc->stats->rx);
37199+ atomic_inc_unchecked(&vcc->stats->rx);
37200 }
37201 } else if (NS_PRV_IOVCNT(iovb) == 2) { /* One small plus one large buffer */
37202 struct sk_buff *sb;
37203@@ -2186,7 +2186,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37204 if (len <= NS_SMBUFSIZE) {
37205 if (!atm_charge(vcc, sb->truesize)) {
37206 push_rxbufs(card, sb);
37207- atomic_inc(&vcc->stats->rx_drop);
37208+ atomic_inc_unchecked(&vcc->stats->rx_drop);
37209 } else {
37210 skb_put(sb, len);
37211 dequeue_sm_buf(card, sb);
37212@@ -2196,7 +2196,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37213 ATM_SKB(sb)->vcc = vcc;
37214 __net_timestamp(sb);
37215 vcc->push(vcc, sb);
37216- atomic_inc(&vcc->stats->rx);
37217+ atomic_inc_unchecked(&vcc->stats->rx);
37218 }
37219
37220 push_rxbufs(card, skb);
37221@@ -2205,7 +2205,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37222
37223 if (!atm_charge(vcc, skb->truesize)) {
37224 push_rxbufs(card, skb);
37225- atomic_inc(&vcc->stats->rx_drop);
37226+ atomic_inc_unchecked(&vcc->stats->rx_drop);
37227 } else {
37228 dequeue_lg_buf(card, skb);
37229 #ifdef NS_USE_DESTRUCTORS
37230@@ -2218,7 +2218,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37231 ATM_SKB(skb)->vcc = vcc;
37232 __net_timestamp(skb);
37233 vcc->push(vcc, skb);
37234- atomic_inc(&vcc->stats->rx);
37235+ atomic_inc_unchecked(&vcc->stats->rx);
37236 }
37237
37238 push_rxbufs(card, sb);
37239@@ -2239,7 +2239,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37240 printk
37241 ("nicstar%d: Out of huge buffers.\n",
37242 card->index);
37243- atomic_inc(&vcc->stats->rx_drop);
37244+ atomic_inc_unchecked(&vcc->stats->rx_drop);
37245 recycle_iovec_rx_bufs(card,
37246 (struct iovec *)
37247 iovb->data,
37248@@ -2290,7 +2290,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37249 card->hbpool.count++;
37250 } else
37251 dev_kfree_skb_any(hb);
37252- atomic_inc(&vcc->stats->rx_drop);
37253+ atomic_inc_unchecked(&vcc->stats->rx_drop);
37254 } else {
37255 /* Copy the small buffer to the huge buffer */
37256 sb = (struct sk_buff *)iov->iov_base;
37257@@ -2327,7 +2327,7 @@ static void dequeue_rx(ns_dev * card, ns_rsqe * rsqe)
37258 #endif /* NS_USE_DESTRUCTORS */
37259 __net_timestamp(hb);
37260 vcc->push(vcc, hb);
37261- atomic_inc(&vcc->stats->rx);
37262+ atomic_inc_unchecked(&vcc->stats->rx);
37263 }
37264 }
37265
37266diff --git a/drivers/atm/solos-pci.c b/drivers/atm/solos-pci.c
37267index 943cf0d..37d15d5 100644
37268--- a/drivers/atm/solos-pci.c
37269+++ b/drivers/atm/solos-pci.c
37270@@ -838,7 +838,7 @@ static void solos_bh(unsigned long card_arg)
37271 }
37272 atm_charge(vcc, skb->truesize);
37273 vcc->push(vcc, skb);
37274- atomic_inc(&vcc->stats->rx);
37275+ atomic_inc_unchecked(&vcc->stats->rx);
37276 break;
37277
37278 case PKT_STATUS:
37279@@ -1116,7 +1116,7 @@ static uint32_t fpga_tx(struct solos_card *card)
37280 vcc = SKB_CB(oldskb)->vcc;
37281
37282 if (vcc) {
37283- atomic_inc(&vcc->stats->tx);
37284+ atomic_inc_unchecked(&vcc->stats->tx);
37285 solos_pop(vcc, oldskb);
37286 } else {
37287 dev_kfree_skb_irq(oldskb);
37288diff --git a/drivers/atm/suni.c b/drivers/atm/suni.c
37289index 0215934..ce9f5b1 100644
37290--- a/drivers/atm/suni.c
37291+++ b/drivers/atm/suni.c
37292@@ -49,8 +49,8 @@ static DEFINE_SPINLOCK(sunis_lock);
37293
37294
37295 #define ADD_LIMITED(s,v) \
37296- atomic_add((v),&stats->s); \
37297- if (atomic_read(&stats->s) < 0) atomic_set(&stats->s,INT_MAX);
37298+ atomic_add_unchecked((v),&stats->s); \
37299+ if (atomic_read_unchecked(&stats->s) < 0) atomic_set_unchecked(&stats->s,INT_MAX);
37300
37301
37302 static void suni_hz(unsigned long from_timer)
37303diff --git a/drivers/atm/uPD98402.c b/drivers/atm/uPD98402.c
37304index 5120a96..e2572bd 100644
37305--- a/drivers/atm/uPD98402.c
37306+++ b/drivers/atm/uPD98402.c
37307@@ -42,7 +42,7 @@ static int fetch_stats(struct atm_dev *dev,struct sonet_stats __user *arg,int ze
37308 struct sonet_stats tmp;
37309 int error = 0;
37310
37311- atomic_add(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs);
37312+ atomic_add_unchecked(GET(HECCT),&PRIV(dev)->sonet_stats.uncorr_hcs);
37313 sonet_copy_stats(&PRIV(dev)->sonet_stats,&tmp);
37314 if (arg) error = copy_to_user(arg,&tmp,sizeof(tmp));
37315 if (zero && !error) {
37316@@ -161,9 +161,9 @@ static int uPD98402_ioctl(struct atm_dev *dev,unsigned int cmd,void __user *arg)
37317
37318
37319 #define ADD_LIMITED(s,v) \
37320- { atomic_add(GET(v),&PRIV(dev)->sonet_stats.s); \
37321- if (atomic_read(&PRIV(dev)->sonet_stats.s) < 0) \
37322- atomic_set(&PRIV(dev)->sonet_stats.s,INT_MAX); }
37323+ { atomic_add_unchecked(GET(v),&PRIV(dev)->sonet_stats.s); \
37324+ if (atomic_read_unchecked(&PRIV(dev)->sonet_stats.s) < 0) \
37325+ atomic_set_unchecked(&PRIV(dev)->sonet_stats.s,INT_MAX); }
37326
37327
37328 static void stat_event(struct atm_dev *dev)
37329@@ -194,7 +194,7 @@ static void uPD98402_int(struct atm_dev *dev)
37330 if (reason & uPD98402_INT_PFM) stat_event(dev);
37331 if (reason & uPD98402_INT_PCO) {
37332 (void) GET(PCOCR); /* clear interrupt cause */
37333- atomic_add(GET(HECCT),
37334+ atomic_add_unchecked(GET(HECCT),
37335 &PRIV(dev)->sonet_stats.uncorr_hcs);
37336 }
37337 if ((reason & uPD98402_INT_RFO) &&
37338@@ -222,9 +222,9 @@ static int uPD98402_start(struct atm_dev *dev)
37339 PUT(~(uPD98402_INT_PFM | uPD98402_INT_ALM | uPD98402_INT_RFO |
37340 uPD98402_INT_LOS),PIMR); /* enable them */
37341 (void) fetch_stats(dev,NULL,1); /* clear kernel counters */
37342- atomic_set(&PRIV(dev)->sonet_stats.corr_hcs,-1);
37343- atomic_set(&PRIV(dev)->sonet_stats.tx_cells,-1);
37344- atomic_set(&PRIV(dev)->sonet_stats.rx_cells,-1);
37345+ atomic_set_unchecked(&PRIV(dev)->sonet_stats.corr_hcs,-1);
37346+ atomic_set_unchecked(&PRIV(dev)->sonet_stats.tx_cells,-1);
37347+ atomic_set_unchecked(&PRIV(dev)->sonet_stats.rx_cells,-1);
37348 return 0;
37349 }
37350
37351diff --git a/drivers/atm/zatm.c b/drivers/atm/zatm.c
37352index 969c3c2..9b72956 100644
37353--- a/drivers/atm/zatm.c
37354+++ b/drivers/atm/zatm.c
37355@@ -459,7 +459,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
37356 }
37357 if (!size) {
37358 dev_kfree_skb_irq(skb);
37359- if (vcc) atomic_inc(&vcc->stats->rx_err);
37360+ if (vcc) atomic_inc_unchecked(&vcc->stats->rx_err);
37361 continue;
37362 }
37363 if (!atm_charge(vcc,skb->truesize)) {
37364@@ -469,7 +469,7 @@ printk("dummy: 0x%08lx, 0x%08lx\n",dummy[0],dummy[1]);
37365 skb->len = size;
37366 ATM_SKB(skb)->vcc = vcc;
37367 vcc->push(vcc,skb);
37368- atomic_inc(&vcc->stats->rx);
37369+ atomic_inc_unchecked(&vcc->stats->rx);
37370 }
37371 zout(pos & 0xffff,MTA(mbx));
37372 #if 0 /* probably a stupid idea */
37373@@ -733,7 +733,7 @@ if (*ZATM_PRV_DSC(skb) != (uPD98401_TXPD_V | uPD98401_TXPD_DP |
37374 skb_queue_head(&zatm_vcc->backlog,skb);
37375 break;
37376 }
37377- atomic_inc(&vcc->stats->tx);
37378+ atomic_inc_unchecked(&vcc->stats->tx);
37379 wake_up(&zatm_vcc->tx_wait);
37380 }
37381
37382diff --git a/drivers/base/bus.c b/drivers/base/bus.c
37383index 83e910a..b224a73 100644
37384--- a/drivers/base/bus.c
37385+++ b/drivers/base/bus.c
37386@@ -1124,7 +1124,7 @@ int subsys_interface_register(struct subsys_interface *sif)
37387 return -EINVAL;
37388
37389 mutex_lock(&subsys->p->mutex);
37390- list_add_tail(&sif->node, &subsys->p->interfaces);
37391+ pax_list_add_tail((struct list_head *)&sif->node, &subsys->p->interfaces);
37392 if (sif->add_dev) {
37393 subsys_dev_iter_init(&iter, subsys, NULL, NULL);
37394 while ((dev = subsys_dev_iter_next(&iter)))
37395@@ -1149,7 +1149,7 @@ void subsys_interface_unregister(struct subsys_interface *sif)
37396 subsys = sif->subsys;
37397
37398 mutex_lock(&subsys->p->mutex);
37399- list_del_init(&sif->node);
37400+ pax_list_del_init((struct list_head *)&sif->node);
37401 if (sif->remove_dev) {
37402 subsys_dev_iter_init(&iter, subsys, NULL, NULL);
37403 while ((dev = subsys_dev_iter_next(&iter)))
37404diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
37405index 25798db..15f130e 100644
37406--- a/drivers/base/devtmpfs.c
37407+++ b/drivers/base/devtmpfs.c
37408@@ -354,7 +354,7 @@ int devtmpfs_mount(const char *mntdir)
37409 if (!thread)
37410 return 0;
37411
37412- err = sys_mount("devtmpfs", (char *)mntdir, "devtmpfs", MS_SILENT, NULL);
37413+ err = sys_mount((char __force_user *)"devtmpfs", (char __force_user *)mntdir, (char __force_user *)"devtmpfs", MS_SILENT, NULL);
37414 if (err)
37415 printk(KERN_INFO "devtmpfs: error mounting %i\n", err);
37416 else
37417@@ -380,11 +380,11 @@ static int devtmpfsd(void *p)
37418 *err = sys_unshare(CLONE_NEWNS);
37419 if (*err)
37420 goto out;
37421- *err = sys_mount("devtmpfs", "/", "devtmpfs", MS_SILENT, options);
37422+ *err = sys_mount((char __force_user *)"devtmpfs", (char __force_user *)"/", (char __force_user *)"devtmpfs", MS_SILENT, (char __force_user *)options);
37423 if (*err)
37424 goto out;
37425- sys_chdir("/.."); /* will traverse into overmounted root */
37426- sys_chroot(".");
37427+ sys_chdir((char __force_user *)"/.."); /* will traverse into overmounted root */
37428+ sys_chroot((char __force_user *)".");
37429 complete(&setup_done);
37430 while (1) {
37431 spin_lock(&req_lock);
37432diff --git a/drivers/base/node.c b/drivers/base/node.c
37433index 8f7ed99..700dd0c 100644
37434--- a/drivers/base/node.c
37435+++ b/drivers/base/node.c
37436@@ -624,7 +624,7 @@ static ssize_t print_nodes_state(enum node_states state, char *buf)
37437 struct node_attr {
37438 struct device_attribute attr;
37439 enum node_states state;
37440-};
37441+} __do_const;
37442
37443 static ssize_t show_node_state(struct device *dev,
37444 struct device_attribute *attr, char *buf)
37445diff --git a/drivers/base/power/domain.c b/drivers/base/power/domain.c
37446index ae098a2..0999830 100644
37447--- a/drivers/base/power/domain.c
37448+++ b/drivers/base/power/domain.c
37449@@ -1821,9 +1821,9 @@ int __pm_genpd_remove_callbacks(struct device *dev, bool clear_td)
37450
37451 if (dev->power.subsys_data->domain_data) {
37452 gpd_data = to_gpd_data(dev->power.subsys_data->domain_data);
37453- gpd_data->ops = (struct gpd_dev_ops){ NULL };
37454+ memset(&gpd_data->ops, 0, sizeof(gpd_data->ops));
37455 if (clear_td)
37456- gpd_data->td = (struct gpd_timing_data){ 0 };
37457+ memset(&gpd_data->td, 0, sizeof(gpd_data->td));
37458
37459 if (--gpd_data->refcount == 0) {
37460 dev->power.subsys_data->domain_data = NULL;
37461@@ -1862,7 +1862,7 @@ int pm_genpd_attach_cpuidle(struct generic_pm_domain *genpd, int state)
37462 {
37463 struct cpuidle_driver *cpuidle_drv;
37464 struct gpd_cpu_data *cpu_data;
37465- struct cpuidle_state *idle_state;
37466+ cpuidle_state_no_const *idle_state;
37467 int ret = 0;
37468
37469 if (IS_ERR_OR_NULL(genpd) || state < 0)
37470@@ -1930,7 +1930,7 @@ int pm_genpd_name_attach_cpuidle(const char *name, int state)
37471 int pm_genpd_detach_cpuidle(struct generic_pm_domain *genpd)
37472 {
37473 struct gpd_cpu_data *cpu_data;
37474- struct cpuidle_state *idle_state;
37475+ cpuidle_state_no_const *idle_state;
37476 int ret = 0;
37477
37478 if (IS_ERR_OR_NULL(genpd))
37479diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c
37480index 95b181d1..c4f0e19 100644
37481--- a/drivers/base/power/sysfs.c
37482+++ b/drivers/base/power/sysfs.c
37483@@ -185,7 +185,7 @@ static ssize_t rtpm_status_show(struct device *dev,
37484 return -EIO;
37485 }
37486 }
37487- return sprintf(buf, p);
37488+ return sprintf(buf, "%s", p);
37489 }
37490
37491 static DEVICE_ATTR(runtime_status, 0444, rtpm_status_show, NULL);
37492diff --git a/drivers/base/power/wakeup.c b/drivers/base/power/wakeup.c
37493index 2d56f41..8830f19 100644
37494--- a/drivers/base/power/wakeup.c
37495+++ b/drivers/base/power/wakeup.c
37496@@ -29,14 +29,14 @@ bool events_check_enabled __read_mostly;
37497 * They need to be modified together atomically, so it's better to use one
37498 * atomic variable to hold them both.
37499 */
37500-static atomic_t combined_event_count = ATOMIC_INIT(0);
37501+static atomic_unchecked_t combined_event_count = ATOMIC_INIT(0);
37502
37503 #define IN_PROGRESS_BITS (sizeof(int) * 4)
37504 #define MAX_IN_PROGRESS ((1 << IN_PROGRESS_BITS) - 1)
37505
37506 static void split_counters(unsigned int *cnt, unsigned int *inpr)
37507 {
37508- unsigned int comb = atomic_read(&combined_event_count);
37509+ unsigned int comb = atomic_read_unchecked(&combined_event_count);
37510
37511 *cnt = (comb >> IN_PROGRESS_BITS);
37512 *inpr = comb & MAX_IN_PROGRESS;
37513@@ -395,7 +395,7 @@ static void wakeup_source_activate(struct wakeup_source *ws)
37514 ws->start_prevent_time = ws->last_time;
37515
37516 /* Increment the counter of events in progress. */
37517- cec = atomic_inc_return(&combined_event_count);
37518+ cec = atomic_inc_return_unchecked(&combined_event_count);
37519
37520 trace_wakeup_source_activate(ws->name, cec);
37521 }
37522@@ -521,7 +521,7 @@ static void wakeup_source_deactivate(struct wakeup_source *ws)
37523 * Increment the counter of registered wakeup events and decrement the
37524 * couter of wakeup events in progress simultaneously.
37525 */
37526- cec = atomic_add_return(MAX_IN_PROGRESS, &combined_event_count);
37527+ cec = atomic_add_return_unchecked(MAX_IN_PROGRESS, &combined_event_count);
37528 trace_wakeup_source_deactivate(ws->name, cec);
37529
37530 split_counters(&cnt, &inpr);
37531diff --git a/drivers/base/syscore.c b/drivers/base/syscore.c
37532index e8d11b6..7b1b36f 100644
37533--- a/drivers/base/syscore.c
37534+++ b/drivers/base/syscore.c
37535@@ -21,7 +21,7 @@ static DEFINE_MUTEX(syscore_ops_lock);
37536 void register_syscore_ops(struct syscore_ops *ops)
37537 {
37538 mutex_lock(&syscore_ops_lock);
37539- list_add_tail(&ops->node, &syscore_ops_list);
37540+ pax_list_add_tail((struct list_head *)&ops->node, &syscore_ops_list);
37541 mutex_unlock(&syscore_ops_lock);
37542 }
37543 EXPORT_SYMBOL_GPL(register_syscore_ops);
37544@@ -33,7 +33,7 @@ EXPORT_SYMBOL_GPL(register_syscore_ops);
37545 void unregister_syscore_ops(struct syscore_ops *ops)
37546 {
37547 mutex_lock(&syscore_ops_lock);
37548- list_del(&ops->node);
37549+ pax_list_del((struct list_head *)&ops->node);
37550 mutex_unlock(&syscore_ops_lock);
37551 }
37552 EXPORT_SYMBOL_GPL(unregister_syscore_ops);
37553diff --git a/drivers/block/cciss.c b/drivers/block/cciss.c
37554index 73894ca..69f64ef 100644
37555--- a/drivers/block/cciss.c
37556+++ b/drivers/block/cciss.c
37557@@ -3011,7 +3011,7 @@ static void start_io(ctlr_info_t *h)
37558 while (!list_empty(&h->reqQ)) {
37559 c = list_entry(h->reqQ.next, CommandList_struct, list);
37560 /* can't do anything if fifo is full */
37561- if ((h->access.fifo_full(h))) {
37562+ if ((h->access->fifo_full(h))) {
37563 dev_warn(&h->pdev->dev, "fifo full\n");
37564 break;
37565 }
37566@@ -3021,7 +3021,7 @@ static void start_io(ctlr_info_t *h)
37567 h->Qdepth--;
37568
37569 /* Tell the controller execute command */
37570- h->access.submit_command(h, c);
37571+ h->access->submit_command(h, c);
37572
37573 /* Put job onto the completed Q */
37574 addQ(&h->cmpQ, c);
37575@@ -3447,17 +3447,17 @@ startio:
37576
37577 static inline unsigned long get_next_completion(ctlr_info_t *h)
37578 {
37579- return h->access.command_completed(h);
37580+ return h->access->command_completed(h);
37581 }
37582
37583 static inline int interrupt_pending(ctlr_info_t *h)
37584 {
37585- return h->access.intr_pending(h);
37586+ return h->access->intr_pending(h);
37587 }
37588
37589 static inline long interrupt_not_for_us(ctlr_info_t *h)
37590 {
37591- return ((h->access.intr_pending(h) == 0) ||
37592+ return ((h->access->intr_pending(h) == 0) ||
37593 (h->interrupts_enabled == 0));
37594 }
37595
37596@@ -3490,7 +3490,7 @@ static inline u32 next_command(ctlr_info_t *h)
37597 u32 a;
37598
37599 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
37600- return h->access.command_completed(h);
37601+ return h->access->command_completed(h);
37602
37603 if ((*(h->reply_pool_head) & 1) == (h->reply_pool_wraparound)) {
37604 a = *(h->reply_pool_head); /* Next cmd in ring buffer */
37605@@ -4047,7 +4047,7 @@ static void cciss_put_controller_into_performant_mode(ctlr_info_t *h)
37606 trans_support & CFGTBL_Trans_use_short_tags);
37607
37608 /* Change the access methods to the performant access methods */
37609- h->access = SA5_performant_access;
37610+ h->access = &SA5_performant_access;
37611 h->transMethod = CFGTBL_Trans_Performant;
37612
37613 return;
37614@@ -4325,7 +4325,7 @@ static int cciss_pci_init(ctlr_info_t *h)
37615 if (prod_index < 0)
37616 return -ENODEV;
37617 h->product_name = products[prod_index].product_name;
37618- h->access = *(products[prod_index].access);
37619+ h->access = products[prod_index].access;
37620
37621 if (cciss_board_disabled(h)) {
37622 dev_warn(&h->pdev->dev, "controller appears to be disabled\n");
37623@@ -5057,7 +5057,7 @@ reinit_after_soft_reset:
37624 }
37625
37626 /* make sure the board interrupts are off */
37627- h->access.set_intr_mask(h, CCISS_INTR_OFF);
37628+ h->access->set_intr_mask(h, CCISS_INTR_OFF);
37629 rc = cciss_request_irq(h, do_cciss_msix_intr, do_cciss_intx);
37630 if (rc)
37631 goto clean2;
37632@@ -5107,7 +5107,7 @@ reinit_after_soft_reset:
37633 * fake ones to scoop up any residual completions.
37634 */
37635 spin_lock_irqsave(&h->lock, flags);
37636- h->access.set_intr_mask(h, CCISS_INTR_OFF);
37637+ h->access->set_intr_mask(h, CCISS_INTR_OFF);
37638 spin_unlock_irqrestore(&h->lock, flags);
37639 free_irq(h->intr[h->intr_mode], h);
37640 rc = cciss_request_irq(h, cciss_msix_discard_completions,
37641@@ -5127,9 +5127,9 @@ reinit_after_soft_reset:
37642 dev_info(&h->pdev->dev, "Board READY.\n");
37643 dev_info(&h->pdev->dev,
37644 "Waiting for stale completions to drain.\n");
37645- h->access.set_intr_mask(h, CCISS_INTR_ON);
37646+ h->access->set_intr_mask(h, CCISS_INTR_ON);
37647 msleep(10000);
37648- h->access.set_intr_mask(h, CCISS_INTR_OFF);
37649+ h->access->set_intr_mask(h, CCISS_INTR_OFF);
37650
37651 rc = controller_reset_failed(h->cfgtable);
37652 if (rc)
37653@@ -5152,7 +5152,7 @@ reinit_after_soft_reset:
37654 cciss_scsi_setup(h);
37655
37656 /* Turn the interrupts on so we can service requests */
37657- h->access.set_intr_mask(h, CCISS_INTR_ON);
37658+ h->access->set_intr_mask(h, CCISS_INTR_ON);
37659
37660 /* Get the firmware version */
37661 inq_buff = kzalloc(sizeof(InquiryData_struct), GFP_KERNEL);
37662@@ -5224,7 +5224,7 @@ static void cciss_shutdown(struct pci_dev *pdev)
37663 kfree(flush_buf);
37664 if (return_code != IO_OK)
37665 dev_warn(&h->pdev->dev, "Error flushing cache\n");
37666- h->access.set_intr_mask(h, CCISS_INTR_OFF);
37667+ h->access->set_intr_mask(h, CCISS_INTR_OFF);
37668 free_irq(h->intr[h->intr_mode], h);
37669 }
37670
37671diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h
37672index 7fda30e..2f27946 100644
37673--- a/drivers/block/cciss.h
37674+++ b/drivers/block/cciss.h
37675@@ -101,7 +101,7 @@ struct ctlr_info
37676 /* information about each logical volume */
37677 drive_info_struct *drv[CISS_MAX_LUN];
37678
37679- struct access_method access;
37680+ struct access_method *access;
37681
37682 /* queue and queue Info */
37683 struct list_head reqQ;
37684@@ -402,27 +402,27 @@ static bool SA5_performant_intr_pending(ctlr_info_t *h)
37685 }
37686
37687 static struct access_method SA5_access = {
37688- SA5_submit_command,
37689- SA5_intr_mask,
37690- SA5_fifo_full,
37691- SA5_intr_pending,
37692- SA5_completed,
37693+ .submit_command = SA5_submit_command,
37694+ .set_intr_mask = SA5_intr_mask,
37695+ .fifo_full = SA5_fifo_full,
37696+ .intr_pending = SA5_intr_pending,
37697+ .command_completed = SA5_completed,
37698 };
37699
37700 static struct access_method SA5B_access = {
37701- SA5_submit_command,
37702- SA5B_intr_mask,
37703- SA5_fifo_full,
37704- SA5B_intr_pending,
37705- SA5_completed,
37706+ .submit_command = SA5_submit_command,
37707+ .set_intr_mask = SA5B_intr_mask,
37708+ .fifo_full = SA5_fifo_full,
37709+ .intr_pending = SA5B_intr_pending,
37710+ .command_completed = SA5_completed,
37711 };
37712
37713 static struct access_method SA5_performant_access = {
37714- SA5_submit_command,
37715- SA5_performant_intr_mask,
37716- SA5_fifo_full,
37717- SA5_performant_intr_pending,
37718- SA5_performant_completed,
37719+ .submit_command = SA5_submit_command,
37720+ .set_intr_mask = SA5_performant_intr_mask,
37721+ .fifo_full = SA5_fifo_full,
37722+ .intr_pending = SA5_performant_intr_pending,
37723+ .command_completed = SA5_performant_completed,
37724 };
37725
37726 struct board_type {
37727diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
37728index 2b94403..fd6ad1f 100644
37729--- a/drivers/block/cpqarray.c
37730+++ b/drivers/block/cpqarray.c
37731@@ -404,7 +404,7 @@ static int cpqarray_register_ctlr(int i, struct pci_dev *pdev)
37732 if (register_blkdev(COMPAQ_SMART2_MAJOR+i, hba[i]->devname)) {
37733 goto Enomem4;
37734 }
37735- hba[i]->access.set_intr_mask(hba[i], 0);
37736+ hba[i]->access->set_intr_mask(hba[i], 0);
37737 if (request_irq(hba[i]->intr, do_ida_intr,
37738 IRQF_DISABLED|IRQF_SHARED, hba[i]->devname, hba[i]))
37739 {
37740@@ -459,7 +459,7 @@ static int cpqarray_register_ctlr(int i, struct pci_dev *pdev)
37741 add_timer(&hba[i]->timer);
37742
37743 /* Enable IRQ now that spinlock and rate limit timer are set up */
37744- hba[i]->access.set_intr_mask(hba[i], FIFO_NOT_EMPTY);
37745+ hba[i]->access->set_intr_mask(hba[i], FIFO_NOT_EMPTY);
37746
37747 for(j=0; j<NWD; j++) {
37748 struct gendisk *disk = ida_gendisk[i][j];
37749@@ -694,7 +694,7 @@ DBGINFO(
37750 for(i=0; i<NR_PRODUCTS; i++) {
37751 if (board_id == products[i].board_id) {
37752 c->product_name = products[i].product_name;
37753- c->access = *(products[i].access);
37754+ c->access = products[i].access;
37755 break;
37756 }
37757 }
37758@@ -792,7 +792,7 @@ static int cpqarray_eisa_detect(void)
37759 hba[ctlr]->intr = intr;
37760 sprintf(hba[ctlr]->devname, "ida%d", nr_ctlr);
37761 hba[ctlr]->product_name = products[j].product_name;
37762- hba[ctlr]->access = *(products[j].access);
37763+ hba[ctlr]->access = products[j].access;
37764 hba[ctlr]->ctlr = ctlr;
37765 hba[ctlr]->board_id = board_id;
37766 hba[ctlr]->pci_dev = NULL; /* not PCI */
37767@@ -978,7 +978,7 @@ static void start_io(ctlr_info_t *h)
37768
37769 while((c = h->reqQ) != NULL) {
37770 /* Can't do anything if we're busy */
37771- if (h->access.fifo_full(h) == 0)
37772+ if (h->access->fifo_full(h) == 0)
37773 return;
37774
37775 /* Get the first entry from the request Q */
37776@@ -986,7 +986,7 @@ static void start_io(ctlr_info_t *h)
37777 h->Qdepth--;
37778
37779 /* Tell the controller to do our bidding */
37780- h->access.submit_command(h, c);
37781+ h->access->submit_command(h, c);
37782
37783 /* Get onto the completion Q */
37784 addQ(&h->cmpQ, c);
37785@@ -1048,7 +1048,7 @@ static irqreturn_t do_ida_intr(int irq, void *dev_id)
37786 unsigned long flags;
37787 __u32 a,a1;
37788
37789- istat = h->access.intr_pending(h);
37790+ istat = h->access->intr_pending(h);
37791 /* Is this interrupt for us? */
37792 if (istat == 0)
37793 return IRQ_NONE;
37794@@ -1059,7 +1059,7 @@ static irqreturn_t do_ida_intr(int irq, void *dev_id)
37795 */
37796 spin_lock_irqsave(IDA_LOCK(h->ctlr), flags);
37797 if (istat & FIFO_NOT_EMPTY) {
37798- while((a = h->access.command_completed(h))) {
37799+ while((a = h->access->command_completed(h))) {
37800 a1 = a; a &= ~3;
37801 if ((c = h->cmpQ) == NULL)
37802 {
37803@@ -1448,11 +1448,11 @@ static int sendcmd(
37804 /*
37805 * Disable interrupt
37806 */
37807- info_p->access.set_intr_mask(info_p, 0);
37808+ info_p->access->set_intr_mask(info_p, 0);
37809 /* Make sure there is room in the command FIFO */
37810 /* Actually it should be completely empty at this time. */
37811 for (i = 200000; i > 0; i--) {
37812- temp = info_p->access.fifo_full(info_p);
37813+ temp = info_p->access->fifo_full(info_p);
37814 if (temp != 0) {
37815 break;
37816 }
37817@@ -1465,7 +1465,7 @@ DBG(
37818 /*
37819 * Send the cmd
37820 */
37821- info_p->access.submit_command(info_p, c);
37822+ info_p->access->submit_command(info_p, c);
37823 complete = pollcomplete(ctlr);
37824
37825 pci_unmap_single(info_p->pci_dev, (dma_addr_t) c->req.sg[0].addr,
37826@@ -1548,9 +1548,9 @@ static int revalidate_allvol(ctlr_info_t *host)
37827 * we check the new geometry. Then turn interrupts back on when
37828 * we're done.
37829 */
37830- host->access.set_intr_mask(host, 0);
37831+ host->access->set_intr_mask(host, 0);
37832 getgeometry(ctlr);
37833- host->access.set_intr_mask(host, FIFO_NOT_EMPTY);
37834+ host->access->set_intr_mask(host, FIFO_NOT_EMPTY);
37835
37836 for(i=0; i<NWD; i++) {
37837 struct gendisk *disk = ida_gendisk[ctlr][i];
37838@@ -1590,7 +1590,7 @@ static int pollcomplete(int ctlr)
37839 /* Wait (up to 2 seconds) for a command to complete */
37840
37841 for (i = 200000; i > 0; i--) {
37842- done = hba[ctlr]->access.command_completed(hba[ctlr]);
37843+ done = hba[ctlr]->access->command_completed(hba[ctlr]);
37844 if (done == 0) {
37845 udelay(10); /* a short fixed delay */
37846 } else
37847diff --git a/drivers/block/cpqarray.h b/drivers/block/cpqarray.h
37848index be73e9d..7fbf140 100644
37849--- a/drivers/block/cpqarray.h
37850+++ b/drivers/block/cpqarray.h
37851@@ -99,7 +99,7 @@ struct ctlr_info {
37852 drv_info_t drv[NWD];
37853 struct proc_dir_entry *proc;
37854
37855- struct access_method access;
37856+ struct access_method *access;
37857
37858 cmdlist_t *reqQ;
37859 cmdlist_t *cmpQ;
37860diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
37861index e7093d4..b364085 100644
37862--- a/drivers/block/drbd/drbd_int.h
37863+++ b/drivers/block/drbd/drbd_int.h
37864@@ -331,7 +331,7 @@ struct drbd_epoch {
37865 struct drbd_connection *connection;
37866 struct list_head list;
37867 unsigned int barrier_nr;
37868- atomic_t epoch_size; /* increased on every request added. */
37869+ atomic_unchecked_t epoch_size; /* increased on every request added. */
37870 atomic_t active; /* increased on every req. added, and dec on every finished. */
37871 unsigned long flags;
37872 };
37873@@ -787,7 +787,7 @@ struct drbd_device {
37874 unsigned int al_tr_number;
37875 int al_tr_cycle;
37876 wait_queue_head_t seq_wait;
37877- atomic_t packet_seq;
37878+ atomic_unchecked_t packet_seq;
37879 unsigned int peer_seq;
37880 spinlock_t peer_seq_lock;
37881 unsigned int minor;
37882@@ -1361,7 +1361,7 @@ static inline int drbd_setsockopt(struct socket *sock, int level, int optname,
37883 char __user *uoptval;
37884 int err;
37885
37886- uoptval = (char __user __force *)optval;
37887+ uoptval = (char __force_user *)optval;
37888
37889 set_fs(KERNEL_DS);
37890 if (level == SOL_SOCKET)
37891diff --git a/drivers/block/drbd/drbd_interval.c b/drivers/block/drbd/drbd_interval.c
37892index 89c497c..9c736ae 100644
37893--- a/drivers/block/drbd/drbd_interval.c
37894+++ b/drivers/block/drbd/drbd_interval.c
37895@@ -67,9 +67,9 @@ static void augment_rotate(struct rb_node *rb_old, struct rb_node *rb_new)
37896 }
37897
37898 static const struct rb_augment_callbacks augment_callbacks = {
37899- augment_propagate,
37900- augment_copy,
37901- augment_rotate,
37902+ .propagate = augment_propagate,
37903+ .copy = augment_copy,
37904+ .rotate = augment_rotate,
37905 };
37906
37907 /**
37908diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
37909index 331e5cc..6d657bce 100644
37910--- a/drivers/block/drbd/drbd_main.c
37911+++ b/drivers/block/drbd/drbd_main.c
37912@@ -1322,7 +1322,7 @@ static int _drbd_send_ack(struct drbd_peer_device *peer_device, enum drbd_packet
37913 p->sector = sector;
37914 p->block_id = block_id;
37915 p->blksize = blksize;
37916- p->seq_num = cpu_to_be32(atomic_inc_return(&peer_device->device->packet_seq));
37917+ p->seq_num = cpu_to_be32(atomic_inc_return_unchecked(&peer_device->device->packet_seq));
37918 return drbd_send_command(peer_device, sock, cmd, sizeof(*p), NULL, 0);
37919 }
37920
37921@@ -1628,7 +1628,7 @@ int drbd_send_dblock(struct drbd_peer_device *peer_device, struct drbd_request *
37922 return -EIO;
37923 p->sector = cpu_to_be64(req->i.sector);
37924 p->block_id = (unsigned long)req;
37925- p->seq_num = cpu_to_be32(atomic_inc_return(&device->packet_seq));
37926+ p->seq_num = cpu_to_be32(atomic_inc_return_unchecked(&device->packet_seq));
37927 dp_flags = bio_flags_to_wire(peer_device->connection, req->master_bio->bi_rw);
37928 if (device->state.conn >= C_SYNC_SOURCE &&
37929 device->state.conn <= C_PAUSED_SYNC_T)
37930@@ -2658,8 +2658,8 @@ void drbd_destroy_connection(struct kref *kref)
37931 struct drbd_connection *connection = container_of(kref, struct drbd_connection, kref);
37932 struct drbd_resource *resource = connection->resource;
37933
37934- if (atomic_read(&connection->current_epoch->epoch_size) != 0)
37935- drbd_err(connection, "epoch_size:%d\n", atomic_read(&connection->current_epoch->epoch_size));
37936+ if (atomic_read_unchecked(&connection->current_epoch->epoch_size) != 0)
37937+ drbd_err(connection, "epoch_size:%d\n", atomic_read_unchecked(&connection->current_epoch->epoch_size));
37938 kfree(connection->current_epoch);
37939
37940 idr_destroy(&connection->peer_devices);
37941diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
37942index 526414b..4eb8184 100644
37943--- a/drivers/block/drbd/drbd_nl.c
37944+++ b/drivers/block/drbd/drbd_nl.c
37945@@ -3505,7 +3505,7 @@ out:
37946
37947 void drbd_bcast_event(struct drbd_device *device, const struct sib_info *sib)
37948 {
37949- static atomic_t drbd_genl_seq = ATOMIC_INIT(2); /* two. */
37950+ static atomic_unchecked_t drbd_genl_seq = ATOMIC_INIT(2); /* two. */
37951 struct sk_buff *msg;
37952 struct drbd_genlmsghdr *d_out;
37953 unsigned seq;
37954@@ -3518,7 +3518,7 @@ void drbd_bcast_event(struct drbd_device *device, const struct sib_info *sib)
37955 return;
37956 }
37957
37958- seq = atomic_inc_return(&drbd_genl_seq);
37959+ seq = atomic_inc_return_unchecked(&drbd_genl_seq);
37960 msg = genlmsg_new(NLMSG_GOODSIZE, GFP_NOIO);
37961 if (!msg)
37962 goto failed;
37963diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c
37964index 68e3992..1aca24a 100644
37965--- a/drivers/block/drbd/drbd_receiver.c
37966+++ b/drivers/block/drbd/drbd_receiver.c
37967@@ -826,7 +826,7 @@ int drbd_connected(struct drbd_peer_device *peer_device)
37968 struct drbd_device *device = peer_device->device;
37969 int err;
37970
37971- atomic_set(&device->packet_seq, 0);
37972+ atomic_set_unchecked(&device->packet_seq, 0);
37973 device->peer_seq = 0;
37974
37975 device->state_mutex = peer_device->connection->agreed_pro_version < 100 ?
37976@@ -1188,7 +1188,7 @@ static enum finish_epoch drbd_may_finish_epoch(struct drbd_connection *connectio
37977 do {
37978 next_epoch = NULL;
37979
37980- epoch_size = atomic_read(&epoch->epoch_size);
37981+ epoch_size = atomic_read_unchecked(&epoch->epoch_size);
37982
37983 switch (ev & ~EV_CLEANUP) {
37984 case EV_PUT:
37985@@ -1228,7 +1228,7 @@ static enum finish_epoch drbd_may_finish_epoch(struct drbd_connection *connectio
37986 rv = FE_DESTROYED;
37987 } else {
37988 epoch->flags = 0;
37989- atomic_set(&epoch->epoch_size, 0);
37990+ atomic_set_unchecked(&epoch->epoch_size, 0);
37991 /* atomic_set(&epoch->active, 0); is already zero */
37992 if (rv == FE_STILL_LIVE)
37993 rv = FE_RECYCLED;
37994@@ -1456,7 +1456,7 @@ static int receive_Barrier(struct drbd_connection *connection, struct packet_inf
37995 conn_wait_active_ee_empty(connection);
37996 drbd_flush(connection);
37997
37998- if (atomic_read(&connection->current_epoch->epoch_size)) {
37999+ if (atomic_read_unchecked(&connection->current_epoch->epoch_size)) {
38000 epoch = kmalloc(sizeof(struct drbd_epoch), GFP_NOIO);
38001 if (epoch)
38002 break;
38003@@ -1469,11 +1469,11 @@ static int receive_Barrier(struct drbd_connection *connection, struct packet_inf
38004 }
38005
38006 epoch->flags = 0;
38007- atomic_set(&epoch->epoch_size, 0);
38008+ atomic_set_unchecked(&epoch->epoch_size, 0);
38009 atomic_set(&epoch->active, 0);
38010
38011 spin_lock(&connection->epoch_lock);
38012- if (atomic_read(&connection->current_epoch->epoch_size)) {
38013+ if (atomic_read_unchecked(&connection->current_epoch->epoch_size)) {
38014 list_add(&epoch->list, &connection->current_epoch->list);
38015 connection->current_epoch = epoch;
38016 connection->epochs++;
38017@@ -2182,7 +2182,7 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
38018
38019 err = wait_for_and_update_peer_seq(peer_device, peer_seq);
38020 drbd_send_ack_dp(peer_device, P_NEG_ACK, p, pi->size);
38021- atomic_inc(&connection->current_epoch->epoch_size);
38022+ atomic_inc_unchecked(&connection->current_epoch->epoch_size);
38023 err2 = drbd_drain_block(peer_device, pi->size);
38024 if (!err)
38025 err = err2;
38026@@ -2216,7 +2216,7 @@ static int receive_Data(struct drbd_connection *connection, struct packet_info *
38027
38028 spin_lock(&connection->epoch_lock);
38029 peer_req->epoch = connection->current_epoch;
38030- atomic_inc(&peer_req->epoch->epoch_size);
38031+ atomic_inc_unchecked(&peer_req->epoch->epoch_size);
38032 atomic_inc(&peer_req->epoch->active);
38033 spin_unlock(&connection->epoch_lock);
38034
38035@@ -4396,7 +4396,7 @@ struct data_cmd {
38036 int expect_payload;
38037 size_t pkt_size;
38038 int (*fn)(struct drbd_connection *, struct packet_info *);
38039-};
38040+} __do_const;
38041
38042 static struct data_cmd drbd_cmd_handler[] = {
38043 [P_DATA] = { 1, sizeof(struct p_data), receive_Data },
38044@@ -4506,7 +4506,7 @@ static void conn_disconnect(struct drbd_connection *connection)
38045 if (!list_empty(&connection->current_epoch->list))
38046 drbd_err(connection, "ASSERTION FAILED: connection->current_epoch->list not empty\n");
38047 /* ok, no more ee's on the fly, it is safe to reset the epoch_size */
38048- atomic_set(&connection->current_epoch->epoch_size, 0);
38049+ atomic_set_unchecked(&connection->current_epoch->epoch_size, 0);
38050 connection->send.seen_any_write_yet = false;
38051
38052 drbd_info(connection, "Connection closed\n");
38053@@ -5281,7 +5281,7 @@ static int connection_finish_peer_reqs(struct drbd_connection *connection)
38054 struct asender_cmd {
38055 size_t pkt_size;
38056 int (*fn)(struct drbd_connection *connection, struct packet_info *);
38057-};
38058+} __do_const;
38059
38060 static struct asender_cmd asender_tbl[] = {
38061 [P_PING] = { 0, got_Ping },
38062diff --git a/drivers/block/loop.c b/drivers/block/loop.c
38063index f70a230..9dc90d5 100644
38064--- a/drivers/block/loop.c
38065+++ b/drivers/block/loop.c
38066@@ -232,7 +232,7 @@ static int __do_lo_send_write(struct file *file,
38067
38068 file_start_write(file);
38069 set_fs(get_ds());
38070- bw = file->f_op->write(file, buf, len, &pos);
38071+ bw = file->f_op->write(file, (const char __force_user *)buf, len, &pos);
38072 set_fs(old_fs);
38073 file_end_write(file);
38074 if (likely(bw == len))
38075diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c
38076index 091b9ea..f5428f8 100644
38077--- a/drivers/block/null_blk.c
38078+++ b/drivers/block/null_blk.c
38079@@ -382,15 +382,25 @@ static int null_init_hctx(struct blk_mq_hw_ctx *hctx, void *data,
38080 return 0;
38081 }
38082
38083-static struct blk_mq_ops null_mq_ops = {
38084- .queue_rq = null_queue_rq,
38085- .map_queue = blk_mq_map_queue,
38086+static struct blk_mq_ops null_mq_single_ops = {
38087+ .queue_rq = null_queue_rq,
38088+ .map_queue = blk_mq_map_queue,
38089 .init_hctx = null_init_hctx,
38090 .complete = null_softirq_done_fn,
38091+ .alloc_hctx = blk_mq_alloc_single_hw_queue,
38092+ .free_hctx = blk_mq_free_single_hw_queue,
38093+};
38094+
38095+static struct blk_mq_ops null_mq_per_node_ops = {
38096+ .queue_rq = null_queue_rq,
38097+ .map_queue = blk_mq_map_queue,
38098+ .init_hctx = null_init_hctx,
38099+ .alloc_hctx = null_alloc_hctx,
38100+ .free_hctx = null_free_hctx,
38101 };
38102
38103 static struct blk_mq_reg null_mq_reg = {
38104- .ops = &null_mq_ops,
38105+ .ops = &null_mq_single_ops,
38106 .queue_depth = 64,
38107 .cmd_size = sizeof(struct nullb_cmd),
38108 .flags = BLK_MQ_F_SHOULD_MERGE,
38109@@ -521,13 +531,8 @@ static int null_add_dev(void)
38110 null_mq_reg.queue_depth = hw_queue_depth;
38111 null_mq_reg.nr_hw_queues = submit_queues;
38112
38113- if (use_per_node_hctx) {
38114- null_mq_reg.ops->alloc_hctx = null_alloc_hctx;
38115- null_mq_reg.ops->free_hctx = null_free_hctx;
38116- } else {
38117- null_mq_reg.ops->alloc_hctx = blk_mq_alloc_single_hw_queue;
38118- null_mq_reg.ops->free_hctx = blk_mq_free_single_hw_queue;
38119- }
38120+ if (use_per_node_hctx)
38121+ null_mq_reg.ops = &null_mq_per_node_ops;
38122
38123 nullb->q = blk_mq_init_queue(&null_mq_reg, nullb);
38124 } else if (queue_mode == NULL_Q_BIO) {
38125diff --git a/drivers/block/pktcdvd.c b/drivers/block/pktcdvd.c
38126index a2af73d..c0b8f61 100644
38127--- a/drivers/block/pktcdvd.c
38128+++ b/drivers/block/pktcdvd.c
38129@@ -108,7 +108,7 @@ static int pkt_seq_show(struct seq_file *m, void *p);
38130
38131 static sector_t get_zone(sector_t sector, struct pktcdvd_device *pd)
38132 {
38133- return (sector + pd->offset) & ~(sector_t)(pd->settings.size - 1);
38134+ return (sector + pd->offset) & ~(sector_t)(pd->settings.size - 1UL);
38135 }
38136
38137 /*
38138@@ -1888,7 +1888,7 @@ static noinline_for_stack int pkt_probe_settings(struct pktcdvd_device *pd)
38139 return -EROFS;
38140 }
38141 pd->settings.fp = ti.fp;
38142- pd->offset = (be32_to_cpu(ti.track_start) << 2) & (pd->settings.size - 1);
38143+ pd->offset = (be32_to_cpu(ti.track_start) << 2) & (pd->settings.size - 1UL);
38144
38145 if (ti.nwa_v) {
38146 pd->nwa = be32_to_cpu(ti.next_writable);
38147diff --git a/drivers/block/smart1,2.h b/drivers/block/smart1,2.h
38148index e5565fb..71be10b4 100644
38149--- a/drivers/block/smart1,2.h
38150+++ b/drivers/block/smart1,2.h
38151@@ -108,11 +108,11 @@ static unsigned long smart4_intr_pending(ctlr_info_t *h)
38152 }
38153
38154 static struct access_method smart4_access = {
38155- smart4_submit_command,
38156- smart4_intr_mask,
38157- smart4_fifo_full,
38158- smart4_intr_pending,
38159- smart4_completed,
38160+ .submit_command = smart4_submit_command,
38161+ .set_intr_mask = smart4_intr_mask,
38162+ .fifo_full = smart4_fifo_full,
38163+ .intr_pending = smart4_intr_pending,
38164+ .command_completed = smart4_completed,
38165 };
38166
38167 /*
38168@@ -144,11 +144,11 @@ static unsigned long smart2_intr_pending(ctlr_info_t *h)
38169 }
38170
38171 static struct access_method smart2_access = {
38172- smart2_submit_command,
38173- smart2_intr_mask,
38174- smart2_fifo_full,
38175- smart2_intr_pending,
38176- smart2_completed,
38177+ .submit_command = smart2_submit_command,
38178+ .set_intr_mask = smart2_intr_mask,
38179+ .fifo_full = smart2_fifo_full,
38180+ .intr_pending = smart2_intr_pending,
38181+ .command_completed = smart2_completed,
38182 };
38183
38184 /*
38185@@ -180,11 +180,11 @@ static unsigned long smart2e_intr_pending(ctlr_info_t *h)
38186 }
38187
38188 static struct access_method smart2e_access = {
38189- smart2e_submit_command,
38190- smart2e_intr_mask,
38191- smart2e_fifo_full,
38192- smart2e_intr_pending,
38193- smart2e_completed,
38194+ .submit_command = smart2e_submit_command,
38195+ .set_intr_mask = smart2e_intr_mask,
38196+ .fifo_full = smart2e_fifo_full,
38197+ .intr_pending = smart2e_intr_pending,
38198+ .command_completed = smart2e_completed,
38199 };
38200
38201 /*
38202@@ -270,9 +270,9 @@ static unsigned long smart1_intr_pending(ctlr_info_t *h)
38203 }
38204
38205 static struct access_method smart1_access = {
38206- smart1_submit_command,
38207- smart1_intr_mask,
38208- smart1_fifo_full,
38209- smart1_intr_pending,
38210- smart1_completed,
38211+ .submit_command = smart1_submit_command,
38212+ .set_intr_mask = smart1_intr_mask,
38213+ .fifo_full = smart1_fifo_full,
38214+ .intr_pending = smart1_intr_pending,
38215+ .command_completed = smart1_completed,
38216 };
38217diff --git a/drivers/bluetooth/btwilink.c b/drivers/bluetooth/btwilink.c
38218index f038dba..bb74c08 100644
38219--- a/drivers/bluetooth/btwilink.c
38220+++ b/drivers/bluetooth/btwilink.c
38221@@ -288,7 +288,7 @@ static int ti_st_send_frame(struct hci_dev *hdev, struct sk_buff *skb)
38222
38223 static int bt_ti_probe(struct platform_device *pdev)
38224 {
38225- static struct ti_st *hst;
38226+ struct ti_st *hst;
38227 struct hci_dev *hdev;
38228 int err;
38229
38230diff --git a/drivers/cdrom/cdrom.c b/drivers/cdrom/cdrom.c
38231index 8a3aff7..d7538c2 100644
38232--- a/drivers/cdrom/cdrom.c
38233+++ b/drivers/cdrom/cdrom.c
38234@@ -416,7 +416,6 @@ int register_cdrom(struct cdrom_device_info *cdi)
38235 ENSURE(reset, CDC_RESET);
38236 ENSURE(generic_packet, CDC_GENERIC_PACKET);
38237 cdi->mc_flags = 0;
38238- cdo->n_minors = 0;
38239 cdi->options = CDO_USE_FFLAGS;
38240
38241 if (autoclose==1 && CDROM_CAN(CDC_CLOSE_TRAY))
38242@@ -436,8 +435,11 @@ int register_cdrom(struct cdrom_device_info *cdi)
38243 else
38244 cdi->cdda_method = CDDA_OLD;
38245
38246- if (!cdo->generic_packet)
38247- cdo->generic_packet = cdrom_dummy_generic_packet;
38248+ if (!cdo->generic_packet) {
38249+ pax_open_kernel();
38250+ *(void **)&cdo->generic_packet = cdrom_dummy_generic_packet;
38251+ pax_close_kernel();
38252+ }
38253
38254 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" registered\n", cdi->name);
38255 mutex_lock(&cdrom_mutex);
38256@@ -458,7 +460,6 @@ void unregister_cdrom(struct cdrom_device_info *cdi)
38257 if (cdi->exit)
38258 cdi->exit(cdi);
38259
38260- cdi->ops->n_minors--;
38261 cdinfo(CD_REG_UNREG, "drive \"/dev/%s\" unregistered\n", cdi->name);
38262 }
38263
38264@@ -2107,7 +2108,7 @@ static int cdrom_read_cdda_old(struct cdrom_device_info *cdi, __u8 __user *ubuf,
38265 */
38266 nr = nframes;
38267 do {
38268- cgc.buffer = kmalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
38269+ cgc.buffer = kzalloc(CD_FRAMESIZE_RAW * nr, GFP_KERNEL);
38270 if (cgc.buffer)
38271 break;
38272
38273@@ -3429,7 +3430,7 @@ static int cdrom_print_info(const char *header, int val, char *info,
38274 struct cdrom_device_info *cdi;
38275 int ret;
38276
38277- ret = scnprintf(info + *pos, max_size - *pos, header);
38278+ ret = scnprintf(info + *pos, max_size - *pos, "%s", header);
38279 if (!ret)
38280 return 1;
38281
38282diff --git a/drivers/cdrom/gdrom.c b/drivers/cdrom/gdrom.c
38283index 51e75ad..39c4c76 100644
38284--- a/drivers/cdrom/gdrom.c
38285+++ b/drivers/cdrom/gdrom.c
38286@@ -491,7 +491,6 @@ static struct cdrom_device_ops gdrom_ops = {
38287 .audio_ioctl = gdrom_audio_ioctl,
38288 .capability = CDC_MULTI_SESSION | CDC_MEDIA_CHANGED |
38289 CDC_RESET | CDC_DRIVE_STATUS | CDC_CD_R,
38290- .n_minors = 1,
38291 };
38292
38293 static int gdrom_bdops_open(struct block_device *bdev, fmode_t mode)
38294diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
38295index 6e9f74a..50c7ceae 100644
38296--- a/drivers/char/Kconfig
38297+++ b/drivers/char/Kconfig
38298@@ -8,7 +8,8 @@ source "drivers/tty/Kconfig"
38299
38300 config DEVKMEM
38301 bool "/dev/kmem virtual device support"
38302- default y
38303+ default n
38304+ depends on !GRKERNSEC_KMEM
38305 help
38306 Say Y here if you want to support the /dev/kmem device. The
38307 /dev/kmem device is rarely used, but can be used for certain
38308@@ -577,6 +578,7 @@ config DEVPORT
38309 bool
38310 depends on !M68K
38311 depends on ISA || PCI
38312+ depends on !GRKERNSEC_KMEM
38313 default y
38314
38315 source "drivers/s390/char/Kconfig"
38316diff --git a/drivers/char/agp/compat_ioctl.c b/drivers/char/agp/compat_ioctl.c
38317index a48e05b..6bac831 100644
38318--- a/drivers/char/agp/compat_ioctl.c
38319+++ b/drivers/char/agp/compat_ioctl.c
38320@@ -108,7 +108,7 @@ static int compat_agpioc_reserve_wrap(struct agp_file_private *priv, void __user
38321 return -ENOMEM;
38322 }
38323
38324- if (copy_from_user(usegment, (void __user *) ureserve.seg_list,
38325+ if (copy_from_user(usegment, (void __force_user *) ureserve.seg_list,
38326 sizeof(*usegment) * ureserve.seg_count)) {
38327 kfree(usegment);
38328 kfree(ksegment);
38329diff --git a/drivers/char/agp/frontend.c b/drivers/char/agp/frontend.c
38330index b297033..fa217ca 100644
38331--- a/drivers/char/agp/frontend.c
38332+++ b/drivers/char/agp/frontend.c
38333@@ -819,7 +819,7 @@ static int agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg)
38334 if (copy_from_user(&reserve, arg, sizeof(struct agp_region)))
38335 return -EFAULT;
38336
38337- if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment))
38338+ if ((unsigned) reserve.seg_count >= ~0U/sizeof(struct agp_segment_priv))
38339 return -EFAULT;
38340
38341 client = agp_find_client_by_pid(reserve.pid);
38342@@ -849,7 +849,7 @@ static int agpioc_reserve_wrap(struct agp_file_private *priv, void __user *arg)
38343 if (segment == NULL)
38344 return -ENOMEM;
38345
38346- if (copy_from_user(segment, (void __user *) reserve.seg_list,
38347+ if (copy_from_user(segment, (void __force_user *) reserve.seg_list,
38348 sizeof(struct agp_segment) * reserve.seg_count)) {
38349 kfree(segment);
38350 return -EFAULT;
38351diff --git a/drivers/char/genrtc.c b/drivers/char/genrtc.c
38352index 4f94375..413694e 100644
38353--- a/drivers/char/genrtc.c
38354+++ b/drivers/char/genrtc.c
38355@@ -273,6 +273,7 @@ static int gen_rtc_ioctl(struct file *file,
38356 switch (cmd) {
38357
38358 case RTC_PLL_GET:
38359+ memset(&pll, 0, sizeof(pll));
38360 if (get_rtc_pll(&pll))
38361 return -EINVAL;
38362 else
38363diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
38364index d5d4cd8..22d561d 100644
38365--- a/drivers/char/hpet.c
38366+++ b/drivers/char/hpet.c
38367@@ -575,7 +575,7 @@ static inline unsigned long hpet_time_div(struct hpets *hpets,
38368 }
38369
38370 static int
38371-hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg,
38372+hpet_ioctl_common(struct hpet_dev *devp, unsigned int cmd, unsigned long arg,
38373 struct hpet_info *info)
38374 {
38375 struct hpet_timer __iomem *timer;
38376diff --git a/drivers/char/hw_random/intel-rng.c b/drivers/char/hw_random/intel-rng.c
38377index 86fe45c..c0ea948 100644
38378--- a/drivers/char/hw_random/intel-rng.c
38379+++ b/drivers/char/hw_random/intel-rng.c
38380@@ -314,7 +314,7 @@ PFX "RNG, try using the 'no_fwh_detect' option.\n";
38381
38382 if (no_fwh_detect)
38383 return -ENODEV;
38384- printk(warning);
38385+ printk("%s", warning);
38386 return -EBUSY;
38387 }
38388
38389diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
38390index e6db938..835e3a2 100644
38391--- a/drivers/char/ipmi/ipmi_msghandler.c
38392+++ b/drivers/char/ipmi/ipmi_msghandler.c
38393@@ -438,7 +438,7 @@ struct ipmi_smi {
38394 struct proc_dir_entry *proc_dir;
38395 char proc_dir_name[10];
38396
38397- atomic_t stats[IPMI_NUM_STATS];
38398+ atomic_unchecked_t stats[IPMI_NUM_STATS];
38399
38400 /*
38401 * run_to_completion duplicate of smb_info, smi_info
38402@@ -470,9 +470,9 @@ static LIST_HEAD(smi_watchers);
38403 static DEFINE_MUTEX(smi_watchers_mutex);
38404
38405 #define ipmi_inc_stat(intf, stat) \
38406- atomic_inc(&(intf)->stats[IPMI_STAT_ ## stat])
38407+ atomic_inc_unchecked(&(intf)->stats[IPMI_STAT_ ## stat])
38408 #define ipmi_get_stat(intf, stat) \
38409- ((unsigned int) atomic_read(&(intf)->stats[IPMI_STAT_ ## stat]))
38410+ ((unsigned int) atomic_read_unchecked(&(intf)->stats[IPMI_STAT_ ## stat]))
38411
38412 static int is_lan_addr(struct ipmi_addr *addr)
38413 {
38414@@ -2926,7 +2926,7 @@ int ipmi_register_smi(struct ipmi_smi_handlers *handlers,
38415 INIT_LIST_HEAD(&intf->cmd_rcvrs);
38416 init_waitqueue_head(&intf->waitq);
38417 for (i = 0; i < IPMI_NUM_STATS; i++)
38418- atomic_set(&intf->stats[i], 0);
38419+ atomic_set_unchecked(&intf->stats[i], 0);
38420
38421 intf->proc_dir = NULL;
38422
38423diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
38424index 1c4bb4f..719e873 100644
38425--- a/drivers/char/ipmi/ipmi_si_intf.c
38426+++ b/drivers/char/ipmi/ipmi_si_intf.c
38427@@ -285,7 +285,7 @@ struct smi_info {
38428 unsigned char slave_addr;
38429
38430 /* Counters and things for the proc filesystem. */
38431- atomic_t stats[SI_NUM_STATS];
38432+ atomic_unchecked_t stats[SI_NUM_STATS];
38433
38434 struct task_struct *thread;
38435
38436@@ -294,9 +294,9 @@ struct smi_info {
38437 };
38438
38439 #define smi_inc_stat(smi, stat) \
38440- atomic_inc(&(smi)->stats[SI_STAT_ ## stat])
38441+ atomic_inc_unchecked(&(smi)->stats[SI_STAT_ ## stat])
38442 #define smi_get_stat(smi, stat) \
38443- ((unsigned int) atomic_read(&(smi)->stats[SI_STAT_ ## stat]))
38444+ ((unsigned int) atomic_read_unchecked(&(smi)->stats[SI_STAT_ ## stat]))
38445
38446 #define SI_MAX_PARMS 4
38447
38448@@ -3374,7 +3374,7 @@ static int try_smi_init(struct smi_info *new_smi)
38449 atomic_set(&new_smi->req_events, 0);
38450 new_smi->run_to_completion = false;
38451 for (i = 0; i < SI_NUM_STATS; i++)
38452- atomic_set(&new_smi->stats[i], 0);
38453+ atomic_set_unchecked(&new_smi->stats[i], 0);
38454
38455 new_smi->interrupt_disabled = true;
38456 atomic_set(&new_smi->stop_operation, 0);
38457diff --git a/drivers/char/mem.c b/drivers/char/mem.c
38458index 917403f..dddd899 100644
38459--- a/drivers/char/mem.c
38460+++ b/drivers/char/mem.c
38461@@ -18,6 +18,7 @@
38462 #include <linux/raw.h>
38463 #include <linux/tty.h>
38464 #include <linux/capability.h>
38465+#include <linux/security.h>
38466 #include <linux/ptrace.h>
38467 #include <linux/device.h>
38468 #include <linux/highmem.h>
38469@@ -36,6 +37,10 @@
38470
38471 #define DEVPORT_MINOR 4
38472
38473+#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC)
38474+extern const struct file_operations grsec_fops;
38475+#endif
38476+
38477 static inline unsigned long size_inside_page(unsigned long start,
38478 unsigned long size)
38479 {
38480@@ -67,9 +72,13 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size)
38481
38482 while (cursor < to) {
38483 if (!devmem_is_allowed(pfn)) {
38484+#ifdef CONFIG_GRKERNSEC_KMEM
38485+ gr_handle_mem_readwrite(from, to);
38486+#else
38487 printk(KERN_INFO
38488 "Program %s tried to access /dev/mem between %Lx->%Lx.\n",
38489 current->comm, from, to);
38490+#endif
38491 return 0;
38492 }
38493 cursor += PAGE_SIZE;
38494@@ -77,6 +86,11 @@ static inline int range_is_allowed(unsigned long pfn, unsigned long size)
38495 }
38496 return 1;
38497 }
38498+#elif defined(CONFIG_GRKERNSEC_KMEM)
38499+static inline int range_is_allowed(unsigned long pfn, unsigned long size)
38500+{
38501+ return 0;
38502+}
38503 #else
38504 static inline int range_is_allowed(unsigned long pfn, unsigned long size)
38505 {
38506@@ -122,6 +136,7 @@ static ssize_t read_mem(struct file *file, char __user *buf,
38507
38508 while (count > 0) {
38509 unsigned long remaining;
38510+ char *temp;
38511
38512 sz = size_inside_page(p, count);
38513
38514@@ -137,7 +152,23 @@ static ssize_t read_mem(struct file *file, char __user *buf,
38515 if (!ptr)
38516 return -EFAULT;
38517
38518- remaining = copy_to_user(buf, ptr, sz);
38519+#ifdef CONFIG_PAX_USERCOPY
38520+ temp = kmalloc(sz, GFP_KERNEL|GFP_USERCOPY);
38521+ if (!temp) {
38522+ unxlate_dev_mem_ptr(p, ptr);
38523+ return -ENOMEM;
38524+ }
38525+ memcpy(temp, ptr, sz);
38526+#else
38527+ temp = ptr;
38528+#endif
38529+
38530+ remaining = copy_to_user(buf, temp, sz);
38531+
38532+#ifdef CONFIG_PAX_USERCOPY
38533+ kfree(temp);
38534+#endif
38535+
38536 unxlate_dev_mem_ptr(p, ptr);
38537 if (remaining)
38538 return -EFAULT;
38539@@ -369,9 +400,8 @@ static ssize_t read_kmem(struct file *file, char __user *buf,
38540 size_t count, loff_t *ppos)
38541 {
38542 unsigned long p = *ppos;
38543- ssize_t low_count, read, sz;
38544+ ssize_t low_count, read, sz, err = 0;
38545 char *kbuf; /* k-addr because vread() takes vmlist_lock rwlock */
38546- int err = 0;
38547
38548 read = 0;
38549 if (p < (unsigned long) high_memory) {
38550@@ -393,6 +423,8 @@ static ssize_t read_kmem(struct file *file, char __user *buf,
38551 }
38552 #endif
38553 while (low_count > 0) {
38554+ char *temp;
38555+
38556 sz = size_inside_page(p, low_count);
38557
38558 /*
38559@@ -402,7 +434,22 @@ static ssize_t read_kmem(struct file *file, char __user *buf,
38560 */
38561 kbuf = xlate_dev_kmem_ptr((char *)p);
38562
38563- if (copy_to_user(buf, kbuf, sz))
38564+#ifdef CONFIG_PAX_USERCOPY
38565+ temp = kmalloc(sz, GFP_KERNEL|GFP_USERCOPY);
38566+ if (!temp)
38567+ return -ENOMEM;
38568+ memcpy(temp, kbuf, sz);
38569+#else
38570+ temp = kbuf;
38571+#endif
38572+
38573+ err = copy_to_user(buf, temp, sz);
38574+
38575+#ifdef CONFIG_PAX_USERCOPY
38576+ kfree(temp);
38577+#endif
38578+
38579+ if (err)
38580 return -EFAULT;
38581 buf += sz;
38582 p += sz;
38583@@ -827,6 +874,9 @@ static const struct memdev {
38584 #ifdef CONFIG_PRINTK
38585 [11] = { "kmsg", 0644, &kmsg_fops, NULL },
38586 #endif
38587+#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC)
38588+ [13] = { "grsec",S_IRUSR | S_IWUGO, &grsec_fops, NULL },
38589+#endif
38590 };
38591
38592 static int memory_open(struct inode *inode, struct file *filp)
38593@@ -898,7 +948,7 @@ static int __init chr_dev_init(void)
38594 continue;
38595
38596 device_create(mem_class, NULL, MKDEV(MEM_MAJOR, minor),
38597- NULL, devlist[minor].name);
38598+ NULL, "%s", devlist[minor].name);
38599 }
38600
38601 return tty_init();
38602diff --git a/drivers/char/nvram.c b/drivers/char/nvram.c
38603index 9df78e2..01ba9ae 100644
38604--- a/drivers/char/nvram.c
38605+++ b/drivers/char/nvram.c
38606@@ -247,7 +247,7 @@ static ssize_t nvram_read(struct file *file, char __user *buf,
38607
38608 spin_unlock_irq(&rtc_lock);
38609
38610- if (copy_to_user(buf, contents, tmp - contents))
38611+ if (tmp - contents > sizeof(contents) || copy_to_user(buf, contents, tmp - contents))
38612 return -EFAULT;
38613
38614 *ppos = i;
38615diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
38616index 8320abd..ec48108 100644
38617--- a/drivers/char/pcmcia/synclink_cs.c
38618+++ b/drivers/char/pcmcia/synclink_cs.c
38619@@ -2345,9 +2345,9 @@ static void mgslpc_close(struct tty_struct *tty, struct file * filp)
38620
38621 if (debug_level >= DEBUG_LEVEL_INFO)
38622 printk("%s(%d):mgslpc_close(%s) entry, count=%d\n",
38623- __FILE__, __LINE__, info->device_name, port->count);
38624+ __FILE__, __LINE__, info->device_name, atomic_read(&port->count));
38625
38626- WARN_ON(!port->count);
38627+ WARN_ON(!atomic_read(&port->count));
38628
38629 if (tty_port_close_start(port, tty, filp) == 0)
38630 goto cleanup;
38631@@ -2365,7 +2365,7 @@ static void mgslpc_close(struct tty_struct *tty, struct file * filp)
38632 cleanup:
38633 if (debug_level >= DEBUG_LEVEL_INFO)
38634 printk("%s(%d):mgslpc_close(%s) exit, count=%d\n", __FILE__, __LINE__,
38635- tty->driver->name, port->count);
38636+ tty->driver->name, atomic_read(&port->count));
38637 }
38638
38639 /* Wait until the transmitter is empty.
38640@@ -2507,7 +2507,7 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp)
38641
38642 if (debug_level >= DEBUG_LEVEL_INFO)
38643 printk("%s(%d):mgslpc_open(%s), old ref count = %d\n",
38644- __FILE__, __LINE__, tty->driver->name, port->count);
38645+ __FILE__, __LINE__, tty->driver->name, atomic_read(&port->count));
38646
38647 /* If port is closing, signal caller to try again */
38648 if (tty_hung_up_p(filp) || port->flags & ASYNC_CLOSING){
38649@@ -2527,11 +2527,11 @@ static int mgslpc_open(struct tty_struct *tty, struct file * filp)
38650 goto cleanup;
38651 }
38652 spin_lock(&port->lock);
38653- port->count++;
38654+ atomic_inc(&port->count);
38655 spin_unlock(&port->lock);
38656 spin_unlock_irqrestore(&info->netlock, flags);
38657
38658- if (port->count == 1) {
38659+ if (atomic_read(&port->count) == 1) {
38660 /* 1st open on this device, init hardware */
38661 retval = startup(info, tty);
38662 if (retval < 0)
38663@@ -3920,7 +3920,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
38664 unsigned short new_crctype;
38665
38666 /* return error if TTY interface open */
38667- if (info->port.count)
38668+ if (atomic_read(&info->port.count))
38669 return -EBUSY;
38670
38671 switch (encoding)
38672@@ -4024,7 +4024,7 @@ static int hdlcdev_open(struct net_device *dev)
38673
38674 /* arbitrate between network and tty opens */
38675 spin_lock_irqsave(&info->netlock, flags);
38676- if (info->port.count != 0 || info->netcount != 0) {
38677+ if (atomic_read(&info->port.count) != 0 || info->netcount != 0) {
38678 printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name);
38679 spin_unlock_irqrestore(&info->netlock, flags);
38680 return -EBUSY;
38681@@ -4114,7 +4114,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
38682 printk("%s:hdlcdev_ioctl(%s)\n", __FILE__, dev->name);
38683
38684 /* return error if TTY interface open */
38685- if (info->port.count)
38686+ if (atomic_read(&info->port.count))
38687 return -EBUSY;
38688
38689 if (cmd != SIOCWANDEV)
38690diff --git a/drivers/char/random.c b/drivers/char/random.c
38691index 2b6e4cd..43d7ae1 100644
38692--- a/drivers/char/random.c
38693+++ b/drivers/char/random.c
38694@@ -270,10 +270,17 @@
38695 /*
38696 * Configuration information
38697 */
38698+#ifdef CONFIG_GRKERNSEC_RANDNET
38699+#define INPUT_POOL_SHIFT 14
38700+#define INPUT_POOL_WORDS (1 << (INPUT_POOL_SHIFT-5))
38701+#define OUTPUT_POOL_SHIFT 12
38702+#define OUTPUT_POOL_WORDS (1 << (OUTPUT_POOL_SHIFT-5))
38703+#else
38704 #define INPUT_POOL_SHIFT 12
38705 #define INPUT_POOL_WORDS (1 << (INPUT_POOL_SHIFT-5))
38706 #define OUTPUT_POOL_SHIFT 10
38707 #define OUTPUT_POOL_WORDS (1 << (OUTPUT_POOL_SHIFT-5))
38708+#endif
38709 #define SEC_XFER_SIZE 512
38710 #define EXTRACT_SIZE 10
38711
38712@@ -284,9 +291,6 @@
38713 /*
38714 * To allow fractional bits to be tracked, the entropy_count field is
38715 * denominated in units of 1/8th bits.
38716- *
38717- * 2*(ENTROPY_SHIFT + log2(poolbits)) must <= 31, or the multiply in
38718- * credit_entropy_bits() needs to be 64 bits wide.
38719 */
38720 #define ENTROPY_SHIFT 3
38721 #define ENTROPY_BITS(r) ((r)->entropy_count >> ENTROPY_SHIFT)
38722@@ -361,12 +365,19 @@ static struct poolinfo {
38723 #define S(x) ilog2(x)+5, (x), (x)*4, (x)*32, (x) << (ENTROPY_SHIFT+5)
38724 int tap1, tap2, tap3, tap4, tap5;
38725 } poolinfo_table[] = {
38726+#ifdef CONFIG_GRKERNSEC_RANDNET
38727+ /* x^512 + x^411 + x^308 + x^208 +x^104 + x + 1 -- 225 */
38728+ { S(512), 411, 308, 208, 104, 1 },
38729+ /* x^128 + x^104 + x^76 + x^51 + x^25 + x + 1 -- 105 */
38730+ { S(128), 104, 76, 51, 25, 1 },
38731+#else
38732 /* was: x^128 + x^103 + x^76 + x^51 +x^25 + x + 1 */
38733 /* x^128 + x^104 + x^76 + x^51 +x^25 + x + 1 */
38734 { S(128), 104, 76, 51, 25, 1 },
38735 /* was: x^32 + x^26 + x^20 + x^14 + x^7 + x + 1 */
38736 /* x^32 + x^26 + x^19 + x^14 + x^7 + x + 1 */
38737 { S(32), 26, 19, 14, 7, 1 },
38738+#endif
38739 #if 0
38740 /* x^2048 + x^1638 + x^1231 + x^819 + x^411 + x + 1 -- 115 */
38741 { S(2048), 1638, 1231, 819, 411, 1 },
38742@@ -433,9 +444,9 @@ struct entropy_store {
38743 };
38744
38745 static void push_to_pool(struct work_struct *work);
38746-static __u32 input_pool_data[INPUT_POOL_WORDS];
38747-static __u32 blocking_pool_data[OUTPUT_POOL_WORDS];
38748-static __u32 nonblocking_pool_data[OUTPUT_POOL_WORDS];
38749+static __u32 input_pool_data[INPUT_POOL_WORDS] __latent_entropy;
38750+static __u32 blocking_pool_data[OUTPUT_POOL_WORDS] __latent_entropy;
38751+static __u32 nonblocking_pool_data[OUTPUT_POOL_WORDS] __latent_entropy;
38752
38753 static struct entropy_store input_pool = {
38754 .poolinfo = &poolinfo_table[0],
38755@@ -524,8 +535,8 @@ static void _mix_pool_bytes(struct entropy_store *r, const void *in,
38756 input_rotate = (input_rotate + (i ? 7 : 14)) & 31;
38757 }
38758
38759- ACCESS_ONCE(r->input_rotate) = input_rotate;
38760- ACCESS_ONCE(r->add_ptr) = i;
38761+ ACCESS_ONCE_RW(r->input_rotate) = input_rotate;
38762+ ACCESS_ONCE_RW(r->add_ptr) = i;
38763 smp_wmb();
38764
38765 if (out)
38766@@ -632,7 +643,7 @@ retry:
38767 /* The +2 corresponds to the /4 in the denominator */
38768
38769 do {
38770- unsigned int anfrac = min(pnfrac, pool_size/2);
38771+ u64 anfrac = min(pnfrac, pool_size/2);
38772 unsigned int add =
38773 ((pool_size - entropy_count)*anfrac*3) >> s;
38774
38775@@ -1166,7 +1177,7 @@ static ssize_t extract_entropy_user(struct entropy_store *r, void __user *buf,
38776
38777 extract_buf(r, tmp);
38778 i = min_t(int, nbytes, EXTRACT_SIZE);
38779- if (copy_to_user(buf, tmp, i)) {
38780+ if (i > sizeof(tmp) || copy_to_user(buf, tmp, i)) {
38781 ret = -EFAULT;
38782 break;
38783 }
38784@@ -1555,7 +1566,7 @@ static char sysctl_bootid[16];
38785 static int proc_do_uuid(struct ctl_table *table, int write,
38786 void __user *buffer, size_t *lenp, loff_t *ppos)
38787 {
38788- struct ctl_table fake_table;
38789+ ctl_table_no_const fake_table;
38790 unsigned char buf[64], tmp_uuid[16], *uuid;
38791
38792 uuid = table->data;
38793@@ -1585,7 +1596,7 @@ static int proc_do_uuid(struct ctl_table *table, int write,
38794 static int proc_do_entropy(ctl_table *table, int write,
38795 void __user *buffer, size_t *lenp, loff_t *ppos)
38796 {
38797- ctl_table fake_table;
38798+ ctl_table_no_const fake_table;
38799 int entropy_count;
38800
38801 entropy_count = *(int *)table->data >> ENTROPY_SHIFT;
38802diff --git a/drivers/char/sonypi.c b/drivers/char/sonypi.c
38803index 7cc1fe22..b602d6b 100644
38804--- a/drivers/char/sonypi.c
38805+++ b/drivers/char/sonypi.c
38806@@ -54,6 +54,7 @@
38807
38808 #include <asm/uaccess.h>
38809 #include <asm/io.h>
38810+#include <asm/local.h>
38811
38812 #include <linux/sonypi.h>
38813
38814@@ -490,7 +491,7 @@ static struct sonypi_device {
38815 spinlock_t fifo_lock;
38816 wait_queue_head_t fifo_proc_list;
38817 struct fasync_struct *fifo_async;
38818- int open_count;
38819+ local_t open_count;
38820 int model;
38821 struct input_dev *input_jog_dev;
38822 struct input_dev *input_key_dev;
38823@@ -892,7 +893,7 @@ static int sonypi_misc_fasync(int fd, struct file *filp, int on)
38824 static int sonypi_misc_release(struct inode *inode, struct file *file)
38825 {
38826 mutex_lock(&sonypi_device.lock);
38827- sonypi_device.open_count--;
38828+ local_dec(&sonypi_device.open_count);
38829 mutex_unlock(&sonypi_device.lock);
38830 return 0;
38831 }
38832@@ -901,9 +902,9 @@ static int sonypi_misc_open(struct inode *inode, struct file *file)
38833 {
38834 mutex_lock(&sonypi_device.lock);
38835 /* Flush input queue on first open */
38836- if (!sonypi_device.open_count)
38837+ if (!local_read(&sonypi_device.open_count))
38838 kfifo_reset(&sonypi_device.fifo);
38839- sonypi_device.open_count++;
38840+ local_inc(&sonypi_device.open_count);
38841 mutex_unlock(&sonypi_device.lock);
38842
38843 return 0;
38844diff --git a/drivers/char/tpm/tpm_acpi.c b/drivers/char/tpm/tpm_acpi.c
38845index b9a57fa..5bb9e38 100644
38846--- a/drivers/char/tpm/tpm_acpi.c
38847+++ b/drivers/char/tpm/tpm_acpi.c
38848@@ -98,11 +98,12 @@ int read_log(struct tpm_bios_log *log)
38849 virt = acpi_os_map_memory(start, len);
38850 if (!virt) {
38851 kfree(log->bios_event_log);
38852+ log->bios_event_log = NULL;
38853 printk("%s: ERROR - Unable to map memory\n", __func__);
38854 return -EIO;
38855 }
38856
38857- memcpy_fromio(log->bios_event_log, virt, len);
38858+ memcpy_fromio(log->bios_event_log, (const char __force_kernel *)virt, len);
38859
38860 acpi_os_unmap_memory(virt, len);
38861 return 0;
38862diff --git a/drivers/char/tpm/tpm_eventlog.c b/drivers/char/tpm/tpm_eventlog.c
38863index 59f7cb2..bac8b6d 100644
38864--- a/drivers/char/tpm/tpm_eventlog.c
38865+++ b/drivers/char/tpm/tpm_eventlog.c
38866@@ -95,7 +95,7 @@ static void *tpm_bios_measurements_start(struct seq_file *m, loff_t *pos)
38867 event = addr;
38868
38869 if ((event->event_type == 0 && event->event_size == 0) ||
38870- ((addr + sizeof(struct tcpa_event) + event->event_size) >= limit))
38871+ (event->event_size >= limit - addr - sizeof(struct tcpa_event)))
38872 return NULL;
38873
38874 return addr;
38875@@ -120,7 +120,7 @@ static void *tpm_bios_measurements_next(struct seq_file *m, void *v,
38876 return NULL;
38877
38878 if ((event->event_type == 0 && event->event_size == 0) ||
38879- ((v + sizeof(struct tcpa_event) + event->event_size) >= limit))
38880+ (event->event_size >= limit - v - sizeof(struct tcpa_event)))
38881 return NULL;
38882
38883 (*pos)++;
38884@@ -213,7 +213,8 @@ static int tpm_binary_bios_measurements_show(struct seq_file *m, void *v)
38885 int i;
38886
38887 for (i = 0; i < sizeof(struct tcpa_event) + event->event_size; i++)
38888- seq_putc(m, data[i]);
38889+ if (!seq_putc(m, data[i]))
38890+ return -EFAULT;
38891
38892 return 0;
38893 }
38894diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
38895index 60aafb8..10c08e0 100644
38896--- a/drivers/char/virtio_console.c
38897+++ b/drivers/char/virtio_console.c
38898@@ -684,7 +684,7 @@ static ssize_t fill_readbuf(struct port *port, char *out_buf, size_t out_count,
38899 if (to_user) {
38900 ssize_t ret;
38901
38902- ret = copy_to_user(out_buf, buf->buf + buf->offset, out_count);
38903+ ret = copy_to_user((char __force_user *)out_buf, buf->buf + buf->offset, out_count);
38904 if (ret)
38905 return -EFAULT;
38906 } else {
38907@@ -787,7 +787,7 @@ static ssize_t port_fops_read(struct file *filp, char __user *ubuf,
38908 if (!port_has_data(port) && !port->host_connected)
38909 return 0;
38910
38911- return fill_readbuf(port, ubuf, count, true);
38912+ return fill_readbuf(port, (char __force_kernel *)ubuf, count, true);
38913 }
38914
38915 static int wait_port_writable(struct port *port, bool nonblock)
38916diff --git a/drivers/clk/clk-composite.c b/drivers/clk/clk-composite.c
38917index 57a078e..c17cde8 100644
38918--- a/drivers/clk/clk-composite.c
38919+++ b/drivers/clk/clk-composite.c
38920@@ -146,7 +146,7 @@ struct clk *clk_register_composite(struct device *dev, const char *name,
38921 struct clk *clk;
38922 struct clk_init_data init;
38923 struct clk_composite *composite;
38924- struct clk_ops *clk_composite_ops;
38925+ clk_ops_no_const *clk_composite_ops;
38926
38927 composite = kzalloc(sizeof(*composite), GFP_KERNEL);
38928 if (!composite) {
38929diff --git a/drivers/clk/socfpga/clk-gate.c b/drivers/clk/socfpga/clk-gate.c
38930index 501d513..fb0ecf9 100644
38931--- a/drivers/clk/socfpga/clk-gate.c
38932+++ b/drivers/clk/socfpga/clk-gate.c
38933@@ -22,6 +22,7 @@
38934 #include <linux/mfd/syscon.h>
38935 #include <linux/of.h>
38936 #include <linux/regmap.h>
38937+#include <asm/pgtable.h>
38938
38939 #include "clk.h"
38940
38941@@ -175,7 +176,7 @@ static int socfpga_clk_prepare(struct clk_hw *hwclk)
38942 return 0;
38943 }
38944
38945-static struct clk_ops gateclk_ops = {
38946+static clk_ops_no_const gateclk_ops __read_only = {
38947 .prepare = socfpga_clk_prepare,
38948 .recalc_rate = socfpga_clk_recalc_rate,
38949 .get_parent = socfpga_clk_get_parent,
38950@@ -209,8 +210,10 @@ static void __init __socfpga_gate_init(struct device_node *node,
38951 socfpga_clk->hw.reg = clk_mgr_base_addr + clk_gate[0];
38952 socfpga_clk->hw.bit_idx = clk_gate[1];
38953
38954- gateclk_ops.enable = clk_gate_ops.enable;
38955- gateclk_ops.disable = clk_gate_ops.disable;
38956+ pax_open_kernel();
38957+ *(void **)&gateclk_ops.enable = clk_gate_ops.enable;
38958+ *(void **)&gateclk_ops.disable = clk_gate_ops.disable;
38959+ pax_close_kernel();
38960 }
38961
38962 rc = of_property_read_u32(node, "fixed-divider", &fixed_div);
38963diff --git a/drivers/clk/socfpga/clk-pll.c b/drivers/clk/socfpga/clk-pll.c
38964index de6da95..a2e72c0 100644
38965--- a/drivers/clk/socfpga/clk-pll.c
38966+++ b/drivers/clk/socfpga/clk-pll.c
38967@@ -21,6 +21,7 @@
38968 #include <linux/io.h>
38969 #include <linux/of.h>
38970 #include <linux/of_address.h>
38971+#include <asm/pgtable.h>
38972
38973 #include "clk.h"
38974
38975@@ -76,7 +77,7 @@ static u8 clk_pll_get_parent(struct clk_hw *hwclk)
38976 CLK_MGR_PLL_CLK_SRC_MASK;
38977 }
38978
38979-static struct clk_ops clk_pll_ops = {
38980+static struct clk_ops_no_const clk_pll_ops __read_only = {
38981 .recalc_rate = clk_pll_recalc_rate,
38982 .get_parent = clk_pll_get_parent,
38983 };
38984@@ -120,8 +121,10 @@ static __init struct clk *__socfpga_pll_init(struct device_node *node,
38985 pll_clk->hw.hw.init = &init;
38986
38987 pll_clk->hw.bit_idx = SOCFPGA_PLL_EXT_ENA;
38988- clk_pll_ops.enable = clk_gate_ops.enable;
38989- clk_pll_ops.disable = clk_gate_ops.disable;
38990+ pax_open_kernel();
38991+ *(void **)&clk_pll_ops.enable = clk_gate_ops.enable;
38992+ *(void **)&clk_pll_ops.disable = clk_gate_ops.disable;
38993+ pax_close_kernel();
38994
38995 clk = clk_register(NULL, &pll_clk->hw.hw);
38996 if (WARN_ON(IS_ERR(clk))) {
38997diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
38998index 000e4e0..4770351 100644
38999--- a/drivers/cpufreq/acpi-cpufreq.c
39000+++ b/drivers/cpufreq/acpi-cpufreq.c
39001@@ -676,8 +676,11 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
39002 data->acpi_data = per_cpu_ptr(acpi_perf_data, cpu);
39003 per_cpu(acfreq_data, cpu) = data;
39004
39005- if (cpu_has(c, X86_FEATURE_CONSTANT_TSC))
39006- acpi_cpufreq_driver.flags |= CPUFREQ_CONST_LOOPS;
39007+ if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) {
39008+ pax_open_kernel();
39009+ *(u8 *)&acpi_cpufreq_driver.flags |= CPUFREQ_CONST_LOOPS;
39010+ pax_close_kernel();
39011+ }
39012
39013 result = acpi_processor_register_performance(data->acpi_data, cpu);
39014 if (result)
39015@@ -810,7 +813,9 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
39016 policy->cur = acpi_cpufreq_guess_freq(data, policy->cpu);
39017 break;
39018 case ACPI_ADR_SPACE_FIXED_HARDWARE:
39019- acpi_cpufreq_driver.get = get_cur_freq_on_cpu;
39020+ pax_open_kernel();
39021+ *(void **)&acpi_cpufreq_driver.get = get_cur_freq_on_cpu;
39022+ pax_close_kernel();
39023 break;
39024 default:
39025 break;
39026@@ -904,8 +909,10 @@ static void __init acpi_cpufreq_boost_init(void)
39027 if (!msrs)
39028 return;
39029
39030- acpi_cpufreq_driver.boost_supported = true;
39031- acpi_cpufreq_driver.boost_enabled = boost_state(0);
39032+ pax_open_kernel();
39033+ *(bool *)&acpi_cpufreq_driver.boost_supported = true;
39034+ *(bool *)&acpi_cpufreq_driver.boost_enabled = boost_state(0);
39035+ pax_close_kernel();
39036
39037 cpu_notifier_register_begin();
39038
39039diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
39040index 558224c..55e3b57 100644
39041--- a/drivers/cpufreq/cpufreq.c
39042+++ b/drivers/cpufreq/cpufreq.c
39043@@ -2022,7 +2022,7 @@ void cpufreq_unregister_governor(struct cpufreq_governor *governor)
39044 }
39045
39046 mutex_lock(&cpufreq_governor_mutex);
39047- list_del(&governor->governor_list);
39048+ pax_list_del(&governor->governor_list);
39049 mutex_unlock(&cpufreq_governor_mutex);
39050 return;
39051 }
39052@@ -2238,7 +2238,7 @@ static int cpufreq_cpu_callback(struct notifier_block *nfb,
39053 return NOTIFY_OK;
39054 }
39055
39056-static struct notifier_block __refdata cpufreq_cpu_notifier = {
39057+static struct notifier_block cpufreq_cpu_notifier = {
39058 .notifier_call = cpufreq_cpu_callback,
39059 };
39060
39061@@ -2278,13 +2278,17 @@ int cpufreq_boost_trigger_state(int state)
39062 return 0;
39063
39064 write_lock_irqsave(&cpufreq_driver_lock, flags);
39065- cpufreq_driver->boost_enabled = state;
39066+ pax_open_kernel();
39067+ *(bool *)&cpufreq_driver->boost_enabled = state;
39068+ pax_close_kernel();
39069 write_unlock_irqrestore(&cpufreq_driver_lock, flags);
39070
39071 ret = cpufreq_driver->set_boost(state);
39072 if (ret) {
39073 write_lock_irqsave(&cpufreq_driver_lock, flags);
39074- cpufreq_driver->boost_enabled = !state;
39075+ pax_open_kernel();
39076+ *(bool *)&cpufreq_driver->boost_enabled = !state;
39077+ pax_close_kernel();
39078 write_unlock_irqrestore(&cpufreq_driver_lock, flags);
39079
39080 pr_err("%s: Cannot %s BOOST\n",
39081@@ -2340,8 +2344,11 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
39082
39083 pr_debug("trying to register driver %s\n", driver_data->name);
39084
39085- if (driver_data->setpolicy)
39086- driver_data->flags |= CPUFREQ_CONST_LOOPS;
39087+ if (driver_data->setpolicy) {
39088+ pax_open_kernel();
39089+ *(u8 *)&driver_data->flags |= CPUFREQ_CONST_LOOPS;
39090+ pax_close_kernel();
39091+ }
39092
39093 write_lock_irqsave(&cpufreq_driver_lock, flags);
39094 if (cpufreq_driver) {
39095@@ -2356,8 +2363,11 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
39096 * Check if driver provides function to enable boost -
39097 * if not, use cpufreq_boost_set_sw as default
39098 */
39099- if (!cpufreq_driver->set_boost)
39100- cpufreq_driver->set_boost = cpufreq_boost_set_sw;
39101+ if (!cpufreq_driver->set_boost) {
39102+ pax_open_kernel();
39103+ *(void **)&cpufreq_driver->set_boost = cpufreq_boost_set_sw;
39104+ pax_close_kernel();
39105+ }
39106
39107 ret = cpufreq_sysfs_create_file(&boost.attr);
39108 if (ret) {
39109diff --git a/drivers/cpufreq/cpufreq_governor.c b/drivers/cpufreq/cpufreq_governor.c
39110index e1c6433..31203ae 100644
39111--- a/drivers/cpufreq/cpufreq_governor.c
39112+++ b/drivers/cpufreq/cpufreq_governor.c
39113@@ -191,7 +191,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
39114 struct dbs_data *dbs_data;
39115 struct od_cpu_dbs_info_s *od_dbs_info = NULL;
39116 struct cs_cpu_dbs_info_s *cs_dbs_info = NULL;
39117- struct od_ops *od_ops = NULL;
39118+ const struct od_ops *od_ops = NULL;
39119 struct od_dbs_tuners *od_tuners = NULL;
39120 struct cs_dbs_tuners *cs_tuners = NULL;
39121 struct cpu_dbs_common_info *cpu_cdbs;
39122@@ -257,7 +257,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
39123
39124 if ((cdata->governor == GOV_CONSERVATIVE) &&
39125 (!policy->governor->initialized)) {
39126- struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;
39127+ const struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;
39128
39129 cpufreq_register_notifier(cs_ops->notifier_block,
39130 CPUFREQ_TRANSITION_NOTIFIER);
39131@@ -277,7 +277,7 @@ int cpufreq_governor_dbs(struct cpufreq_policy *policy,
39132
39133 if ((dbs_data->cdata->governor == GOV_CONSERVATIVE) &&
39134 (policy->governor->initialized == 1)) {
39135- struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;
39136+ const struct cs_ops *cs_ops = dbs_data->cdata->gov_ops;
39137
39138 cpufreq_unregister_notifier(cs_ops->notifier_block,
39139 CPUFREQ_TRANSITION_NOTIFIER);
39140diff --git a/drivers/cpufreq/cpufreq_governor.h b/drivers/cpufreq/cpufreq_governor.h
39141index bfb9ae1..e1d3a7e 100644
39142--- a/drivers/cpufreq/cpufreq_governor.h
39143+++ b/drivers/cpufreq/cpufreq_governor.h
39144@@ -205,7 +205,7 @@ struct common_dbs_data {
39145 void (*exit)(struct dbs_data *dbs_data);
39146
39147 /* Governor specific ops, see below */
39148- void *gov_ops;
39149+ const void *gov_ops;
39150 };
39151
39152 /* Governor Per policy data */
39153@@ -225,7 +225,7 @@ struct od_ops {
39154 unsigned int (*powersave_bias_target)(struct cpufreq_policy *policy,
39155 unsigned int freq_next, unsigned int relation);
39156 void (*freq_increase)(struct cpufreq_policy *policy, unsigned int freq);
39157-};
39158+} __no_const;
39159
39160 struct cs_ops {
39161 struct notifier_block *notifier_block;
39162diff --git a/drivers/cpufreq/cpufreq_ondemand.c b/drivers/cpufreq/cpufreq_ondemand.c
39163index 18d4091..434be15 100644
39164--- a/drivers/cpufreq/cpufreq_ondemand.c
39165+++ b/drivers/cpufreq/cpufreq_ondemand.c
39166@@ -521,7 +521,7 @@ static void od_exit(struct dbs_data *dbs_data)
39167
39168 define_get_cpu_dbs_routines(od_cpu_dbs_info);
39169
39170-static struct od_ops od_ops = {
39171+static struct od_ops od_ops __read_only = {
39172 .powersave_bias_init_cpu = ondemand_powersave_bias_init_cpu,
39173 .powersave_bias_target = generic_powersave_bias_target,
39174 .freq_increase = dbs_freq_increase,
39175@@ -576,14 +576,18 @@ void od_register_powersave_bias_handler(unsigned int (*f)
39176 (struct cpufreq_policy *, unsigned int, unsigned int),
39177 unsigned int powersave_bias)
39178 {
39179- od_ops.powersave_bias_target = f;
39180+ pax_open_kernel();
39181+ *(void **)&od_ops.powersave_bias_target = f;
39182+ pax_close_kernel();
39183 od_set_powersave_bias(powersave_bias);
39184 }
39185 EXPORT_SYMBOL_GPL(od_register_powersave_bias_handler);
39186
39187 void od_unregister_powersave_bias_handler(void)
39188 {
39189- od_ops.powersave_bias_target = generic_powersave_bias_target;
39190+ pax_open_kernel();
39191+ *(void **)&od_ops.powersave_bias_target = generic_powersave_bias_target;
39192+ pax_close_kernel();
39193 od_set_powersave_bias(0);
39194 }
39195 EXPORT_SYMBOL_GPL(od_unregister_powersave_bias_handler);
39196diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
39197index db2e45b..72c7d37 100644
39198--- a/drivers/cpufreq/intel_pstate.c
39199+++ b/drivers/cpufreq/intel_pstate.c
39200@@ -125,10 +125,10 @@ struct pstate_funcs {
39201 struct cpu_defaults {
39202 struct pstate_adjust_policy pid_policy;
39203 struct pstate_funcs funcs;
39204-};
39205+} __do_const;
39206
39207 static struct pstate_adjust_policy pid_params;
39208-static struct pstate_funcs pstate_funcs;
39209+static struct pstate_funcs *pstate_funcs;
39210
39211 struct perf_limits {
39212 int no_turbo;
39213@@ -529,7 +529,7 @@ static void intel_pstate_set_pstate(struct cpudata *cpu, int pstate)
39214
39215 cpu->pstate.current_pstate = pstate;
39216
39217- pstate_funcs.set(cpu, pstate);
39218+ pstate_funcs->set(cpu, pstate);
39219 }
39220
39221 static inline void intel_pstate_pstate_increase(struct cpudata *cpu, int steps)
39222@@ -551,12 +551,12 @@ static void intel_pstate_get_cpu_pstates(struct cpudata *cpu)
39223 {
39224 sprintf(cpu->name, "Intel 2nd generation core");
39225
39226- cpu->pstate.min_pstate = pstate_funcs.get_min();
39227- cpu->pstate.max_pstate = pstate_funcs.get_max();
39228- cpu->pstate.turbo_pstate = pstate_funcs.get_turbo();
39229+ cpu->pstate.min_pstate = pstate_funcs->get_min();
39230+ cpu->pstate.max_pstate = pstate_funcs->get_max();
39231+ cpu->pstate.turbo_pstate = pstate_funcs->get_turbo();
39232
39233- if (pstate_funcs.get_vid)
39234- pstate_funcs.get_vid(cpu);
39235+ if (pstate_funcs->get_vid)
39236+ pstate_funcs->get_vid(cpu);
39237 intel_pstate_set_pstate(cpu, cpu->pstate.min_pstate);
39238 }
39239
39240@@ -841,9 +841,9 @@ static int intel_pstate_msrs_not_valid(void)
39241 rdmsrl(MSR_IA32_APERF, aperf);
39242 rdmsrl(MSR_IA32_MPERF, mperf);
39243
39244- if (!pstate_funcs.get_max() ||
39245- !pstate_funcs.get_min() ||
39246- !pstate_funcs.get_turbo())
39247+ if (!pstate_funcs->get_max() ||
39248+ !pstate_funcs->get_min() ||
39249+ !pstate_funcs->get_turbo())
39250 return -ENODEV;
39251
39252 rdmsrl(MSR_IA32_APERF, tmp);
39253@@ -857,7 +857,7 @@ static int intel_pstate_msrs_not_valid(void)
39254 return 0;
39255 }
39256
39257-static void copy_pid_params(struct pstate_adjust_policy *policy)
39258+static void copy_pid_params(const struct pstate_adjust_policy *policy)
39259 {
39260 pid_params.sample_rate_ms = policy->sample_rate_ms;
39261 pid_params.p_gain_pct = policy->p_gain_pct;
39262@@ -869,11 +869,7 @@ static void copy_pid_params(struct pstate_adjust_policy *policy)
39263
39264 static void copy_cpu_funcs(struct pstate_funcs *funcs)
39265 {
39266- pstate_funcs.get_max = funcs->get_max;
39267- pstate_funcs.get_min = funcs->get_min;
39268- pstate_funcs.get_turbo = funcs->get_turbo;
39269- pstate_funcs.set = funcs->set;
39270- pstate_funcs.get_vid = funcs->get_vid;
39271+ pstate_funcs = funcs;
39272 }
39273
39274 #if IS_ENABLED(CONFIG_ACPI)
39275diff --git a/drivers/cpufreq/p4-clockmod.c b/drivers/cpufreq/p4-clockmod.c
39276index 529cfd9..0e28fff 100644
39277--- a/drivers/cpufreq/p4-clockmod.c
39278+++ b/drivers/cpufreq/p4-clockmod.c
39279@@ -134,10 +134,14 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
39280 case 0x0F: /* Core Duo */
39281 case 0x16: /* Celeron Core */
39282 case 0x1C: /* Atom */
39283- p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
39284+ pax_open_kernel();
39285+ *(u8 *)&p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
39286+ pax_close_kernel();
39287 return speedstep_get_frequency(SPEEDSTEP_CPU_PCORE);
39288 case 0x0D: /* Pentium M (Dothan) */
39289- p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
39290+ pax_open_kernel();
39291+ *(u8 *)&p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
39292+ pax_close_kernel();
39293 /* fall through */
39294 case 0x09: /* Pentium M (Banias) */
39295 return speedstep_get_frequency(SPEEDSTEP_CPU_PM);
39296@@ -149,7 +153,9 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
39297
39298 /* on P-4s, the TSC runs with constant frequency independent whether
39299 * throttling is active or not. */
39300- p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
39301+ pax_open_kernel();
39302+ *(u8 *)&p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
39303+ pax_close_kernel();
39304
39305 if (speedstep_detect_processor() == SPEEDSTEP_CPU_P4M) {
39306 printk(KERN_WARNING PFX "Warning: Pentium 4-M detected. "
39307diff --git a/drivers/cpufreq/sparc-us3-cpufreq.c b/drivers/cpufreq/sparc-us3-cpufreq.c
39308index 9bb42ba..b01b4a2 100644
39309--- a/drivers/cpufreq/sparc-us3-cpufreq.c
39310+++ b/drivers/cpufreq/sparc-us3-cpufreq.c
39311@@ -18,14 +18,12 @@
39312 #include <asm/head.h>
39313 #include <asm/timer.h>
39314
39315-static struct cpufreq_driver *cpufreq_us3_driver;
39316-
39317 struct us3_freq_percpu_info {
39318 struct cpufreq_frequency_table table[4];
39319 };
39320
39321 /* Indexed by cpu number. */
39322-static struct us3_freq_percpu_info *us3_freq_table;
39323+static struct us3_freq_percpu_info us3_freq_table[NR_CPUS];
39324
39325 /* UltraSPARC-III has three dividers: 1, 2, and 32. These are controlled
39326 * in the Safari config register.
39327@@ -156,16 +154,27 @@ static int __init us3_freq_cpu_init(struct cpufreq_policy *policy)
39328
39329 static int us3_freq_cpu_exit(struct cpufreq_policy *policy)
39330 {
39331- if (cpufreq_us3_driver)
39332- us3_freq_target(policy, 0);
39333+ us3_freq_target(policy, 0);
39334
39335 return 0;
39336 }
39337
39338+static int __init us3_freq_init(void);
39339+static void __exit us3_freq_exit(void);
39340+
39341+static struct cpufreq_driver cpufreq_us3_driver = {
39342+ .init = us3_freq_cpu_init,
39343+ .verify = cpufreq_generic_frequency_table_verify,
39344+ .target_index = us3_freq_target,
39345+ .get = us3_freq_get,
39346+ .exit = us3_freq_cpu_exit,
39347+ .name = "UltraSPARC-III",
39348+
39349+};
39350+
39351 static int __init us3_freq_init(void)
39352 {
39353 unsigned long manuf, impl, ver;
39354- int ret;
39355
39356 if (tlb_type != cheetah && tlb_type != cheetah_plus)
39357 return -ENODEV;
39358@@ -178,55 +187,15 @@ static int __init us3_freq_init(void)
39359 (impl == CHEETAH_IMPL ||
39360 impl == CHEETAH_PLUS_IMPL ||
39361 impl == JAGUAR_IMPL ||
39362- impl == PANTHER_IMPL)) {
39363- struct cpufreq_driver *driver;
39364-
39365- ret = -ENOMEM;
39366- driver = kzalloc(sizeof(*driver), GFP_KERNEL);
39367- if (!driver)
39368- goto err_out;
39369-
39370- us3_freq_table = kzalloc((NR_CPUS * sizeof(*us3_freq_table)),
39371- GFP_KERNEL);
39372- if (!us3_freq_table)
39373- goto err_out;
39374-
39375- driver->init = us3_freq_cpu_init;
39376- driver->verify = cpufreq_generic_frequency_table_verify;
39377- driver->target_index = us3_freq_target;
39378- driver->get = us3_freq_get;
39379- driver->exit = us3_freq_cpu_exit;
39380- strcpy(driver->name, "UltraSPARC-III");
39381-
39382- cpufreq_us3_driver = driver;
39383- ret = cpufreq_register_driver(driver);
39384- if (ret)
39385- goto err_out;
39386-
39387- return 0;
39388-
39389-err_out:
39390- if (driver) {
39391- kfree(driver);
39392- cpufreq_us3_driver = NULL;
39393- }
39394- kfree(us3_freq_table);
39395- us3_freq_table = NULL;
39396- return ret;
39397- }
39398+ impl == PANTHER_IMPL))
39399+ return cpufreq_register_driver(&cpufreq_us3_driver);
39400
39401 return -ENODEV;
39402 }
39403
39404 static void __exit us3_freq_exit(void)
39405 {
39406- if (cpufreq_us3_driver) {
39407- cpufreq_unregister_driver(cpufreq_us3_driver);
39408- kfree(cpufreq_us3_driver);
39409- cpufreq_us3_driver = NULL;
39410- kfree(us3_freq_table);
39411- us3_freq_table = NULL;
39412- }
39413+ cpufreq_unregister_driver(&cpufreq_us3_driver);
39414 }
39415
39416 MODULE_AUTHOR("David S. Miller <davem@redhat.com>");
39417diff --git a/drivers/cpufreq/speedstep-centrino.c b/drivers/cpufreq/speedstep-centrino.c
39418index 6723f03..3465190 100644
39419--- a/drivers/cpufreq/speedstep-centrino.c
39420+++ b/drivers/cpufreq/speedstep-centrino.c
39421@@ -351,8 +351,11 @@ static int centrino_cpu_init(struct cpufreq_policy *policy)
39422 !cpu_has(cpu, X86_FEATURE_EST))
39423 return -ENODEV;
39424
39425- if (cpu_has(cpu, X86_FEATURE_CONSTANT_TSC))
39426- centrino_driver.flags |= CPUFREQ_CONST_LOOPS;
39427+ if (cpu_has(cpu, X86_FEATURE_CONSTANT_TSC)) {
39428+ pax_open_kernel();
39429+ *(u8 *)&centrino_driver.flags |= CPUFREQ_CONST_LOOPS;
39430+ pax_close_kernel();
39431+ }
39432
39433 if (policy->cpu != 0)
39434 return -ENODEV;
39435diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
39436index 136d6a2..06e373d 100644
39437--- a/drivers/cpuidle/driver.c
39438+++ b/drivers/cpuidle/driver.c
39439@@ -202,7 +202,7 @@ static int poll_idle(struct cpuidle_device *dev,
39440
39441 static void poll_idle_init(struct cpuidle_driver *drv)
39442 {
39443- struct cpuidle_state *state = &drv->states[0];
39444+ cpuidle_state_no_const *state = &drv->states[0];
39445
39446 snprintf(state->name, CPUIDLE_NAME_LEN, "POLL");
39447 snprintf(state->desc, CPUIDLE_DESC_LEN, "CPUIDLE CORE POLL IDLE");
39448diff --git a/drivers/cpuidle/governor.c b/drivers/cpuidle/governor.c
39449index ca89412..a7b9c49 100644
39450--- a/drivers/cpuidle/governor.c
39451+++ b/drivers/cpuidle/governor.c
39452@@ -87,7 +87,7 @@ int cpuidle_register_governor(struct cpuidle_governor *gov)
39453 mutex_lock(&cpuidle_lock);
39454 if (__cpuidle_find_governor(gov->name) == NULL) {
39455 ret = 0;
39456- list_add_tail(&gov->governor_list, &cpuidle_governors);
39457+ pax_list_add_tail((struct list_head *)&gov->governor_list, &cpuidle_governors);
39458 if (!cpuidle_curr_governor ||
39459 cpuidle_curr_governor->rating < gov->rating)
39460 cpuidle_switch_governor(gov);
39461diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c
39462index efe2f17..b8124f9 100644
39463--- a/drivers/cpuidle/sysfs.c
39464+++ b/drivers/cpuidle/sysfs.c
39465@@ -135,7 +135,7 @@ static struct attribute *cpuidle_switch_attrs[] = {
39466 NULL
39467 };
39468
39469-static struct attribute_group cpuidle_attr_group = {
39470+static attribute_group_no_const cpuidle_attr_group = {
39471 .attrs = cpuidle_default_attrs,
39472 .name = "cpuidle",
39473 };
39474diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
39475index 12fea3e..1e28f47 100644
39476--- a/drivers/crypto/hifn_795x.c
39477+++ b/drivers/crypto/hifn_795x.c
39478@@ -51,7 +51,7 @@ module_param_string(hifn_pll_ref, hifn_pll_ref, sizeof(hifn_pll_ref), 0444);
39479 MODULE_PARM_DESC(hifn_pll_ref,
39480 "PLL reference clock (pci[freq] or ext[freq], default ext)");
39481
39482-static atomic_t hifn_dev_number;
39483+static atomic_unchecked_t hifn_dev_number;
39484
39485 #define ACRYPTO_OP_DECRYPT 0
39486 #define ACRYPTO_OP_ENCRYPT 1
39487@@ -2577,7 +2577,7 @@ static int hifn_probe(struct pci_dev *pdev, const struct pci_device_id *id)
39488 goto err_out_disable_pci_device;
39489
39490 snprintf(name, sizeof(name), "hifn%d",
39491- atomic_inc_return(&hifn_dev_number)-1);
39492+ atomic_inc_return_unchecked(&hifn_dev_number)-1);
39493
39494 err = pci_request_regions(pdev, name);
39495 if (err)
39496diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
39497index 2042ec3..a9ce67f 100644
39498--- a/drivers/devfreq/devfreq.c
39499+++ b/drivers/devfreq/devfreq.c
39500@@ -616,7 +616,7 @@ int devfreq_add_governor(struct devfreq_governor *governor)
39501 goto err_out;
39502 }
39503
39504- list_add(&governor->node, &devfreq_governor_list);
39505+ pax_list_add((struct list_head *)&governor->node, &devfreq_governor_list);
39506
39507 list_for_each_entry(devfreq, &devfreq_list, node) {
39508 int ret = 0;
39509@@ -704,7 +704,7 @@ int devfreq_remove_governor(struct devfreq_governor *governor)
39510 }
39511 }
39512
39513- list_del(&governor->node);
39514+ pax_list_del((struct list_head *)&governor->node);
39515 err_out:
39516 mutex_unlock(&devfreq_list_lock);
39517
39518diff --git a/drivers/dma/sh/shdma-base.c b/drivers/dma/sh/shdma-base.c
39519index 5239677..1cb71a8 100644
39520--- a/drivers/dma/sh/shdma-base.c
39521+++ b/drivers/dma/sh/shdma-base.c
39522@@ -267,8 +267,8 @@ static int shdma_alloc_chan_resources(struct dma_chan *chan)
39523 schan->slave_id = -EINVAL;
39524 }
39525
39526- schan->desc = kcalloc(NR_DESCS_PER_CHANNEL,
39527- sdev->desc_size, GFP_KERNEL);
39528+ schan->desc = kcalloc(sdev->desc_size,
39529+ NR_DESCS_PER_CHANNEL, GFP_KERNEL);
39530 if (!schan->desc) {
39531 ret = -ENOMEM;
39532 goto edescalloc;
39533diff --git a/drivers/dma/sh/shdmac.c b/drivers/dma/sh/shdmac.c
39534index dda7e75..0a4c867 100644
39535--- a/drivers/dma/sh/shdmac.c
39536+++ b/drivers/dma/sh/shdmac.c
39537@@ -513,7 +513,7 @@ static int sh_dmae_nmi_handler(struct notifier_block *self,
39538 return ret;
39539 }
39540
39541-static struct notifier_block sh_dmae_nmi_notifier __read_mostly = {
39542+static struct notifier_block sh_dmae_nmi_notifier = {
39543 .notifier_call = sh_dmae_nmi_handler,
39544
39545 /* Run before NMI debug handler and KGDB */
39546diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
39547index 592af5f..bb1d583 100644
39548--- a/drivers/edac/edac_device.c
39549+++ b/drivers/edac/edac_device.c
39550@@ -477,9 +477,9 @@ void edac_device_reset_delay_period(struct edac_device_ctl_info *edac_dev,
39551 */
39552 int edac_device_alloc_index(void)
39553 {
39554- static atomic_t device_indexes = ATOMIC_INIT(0);
39555+ static atomic_unchecked_t device_indexes = ATOMIC_INIT(0);
39556
39557- return atomic_inc_return(&device_indexes) - 1;
39558+ return atomic_inc_return_unchecked(&device_indexes) - 1;
39559 }
39560 EXPORT_SYMBOL_GPL(edac_device_alloc_index);
39561
39562diff --git a/drivers/edac/edac_mc_sysfs.c b/drivers/edac/edac_mc_sysfs.c
39563index 01fae82..1dd8289 100644
39564--- a/drivers/edac/edac_mc_sysfs.c
39565+++ b/drivers/edac/edac_mc_sysfs.c
39566@@ -152,7 +152,7 @@ static const char * const edac_caps[] = {
39567 struct dev_ch_attribute {
39568 struct device_attribute attr;
39569 int channel;
39570-};
39571+} __do_const;
39572
39573 #define DEVICE_CHANNEL(_name, _mode, _show, _store, _var) \
39574 struct dev_ch_attribute dev_attr_legacy_##_name = \
39575@@ -1009,14 +1009,16 @@ int edac_create_sysfs_mci_device(struct mem_ctl_info *mci)
39576 }
39577
39578 if (mci->set_sdram_scrub_rate || mci->get_sdram_scrub_rate) {
39579+ pax_open_kernel();
39580 if (mci->get_sdram_scrub_rate) {
39581- dev_attr_sdram_scrub_rate.attr.mode |= S_IRUGO;
39582- dev_attr_sdram_scrub_rate.show = &mci_sdram_scrub_rate_show;
39583+ *(umode_t *)&dev_attr_sdram_scrub_rate.attr.mode |= S_IRUGO;
39584+ *(void **)&dev_attr_sdram_scrub_rate.show = &mci_sdram_scrub_rate_show;
39585 }
39586 if (mci->set_sdram_scrub_rate) {
39587- dev_attr_sdram_scrub_rate.attr.mode |= S_IWUSR;
39588- dev_attr_sdram_scrub_rate.store = &mci_sdram_scrub_rate_store;
39589+ *(umode_t *)&dev_attr_sdram_scrub_rate.attr.mode |= S_IWUSR;
39590+ *(void **)&dev_attr_sdram_scrub_rate.store = &mci_sdram_scrub_rate_store;
39591 }
39592+ pax_close_kernel();
39593 err = device_create_file(&mci->dev,
39594 &dev_attr_sdram_scrub_rate);
39595 if (err) {
39596diff --git a/drivers/edac/edac_pci.c b/drivers/edac/edac_pci.c
39597index 2cf44b4d..6dd2dc7 100644
39598--- a/drivers/edac/edac_pci.c
39599+++ b/drivers/edac/edac_pci.c
39600@@ -29,7 +29,7 @@
39601
39602 static DEFINE_MUTEX(edac_pci_ctls_mutex);
39603 static LIST_HEAD(edac_pci_list);
39604-static atomic_t pci_indexes = ATOMIC_INIT(0);
39605+static atomic_unchecked_t pci_indexes = ATOMIC_INIT(0);
39606
39607 /*
39608 * edac_pci_alloc_ctl_info
39609@@ -315,7 +315,7 @@ EXPORT_SYMBOL_GPL(edac_pci_reset_delay_period);
39610 */
39611 int edac_pci_alloc_index(void)
39612 {
39613- return atomic_inc_return(&pci_indexes) - 1;
39614+ return atomic_inc_return_unchecked(&pci_indexes) - 1;
39615 }
39616 EXPORT_SYMBOL_GPL(edac_pci_alloc_index);
39617
39618diff --git a/drivers/edac/edac_pci_sysfs.c b/drivers/edac/edac_pci_sysfs.c
39619index e8658e4..22746d6 100644
39620--- a/drivers/edac/edac_pci_sysfs.c
39621+++ b/drivers/edac/edac_pci_sysfs.c
39622@@ -26,8 +26,8 @@ static int edac_pci_log_pe = 1; /* log PCI parity errors */
39623 static int edac_pci_log_npe = 1; /* log PCI non-parity error errors */
39624 static int edac_pci_poll_msec = 1000; /* one second workq period */
39625
39626-static atomic_t pci_parity_count = ATOMIC_INIT(0);
39627-static atomic_t pci_nonparity_count = ATOMIC_INIT(0);
39628+static atomic_unchecked_t pci_parity_count = ATOMIC_INIT(0);
39629+static atomic_unchecked_t pci_nonparity_count = ATOMIC_INIT(0);
39630
39631 static struct kobject *edac_pci_top_main_kobj;
39632 static atomic_t edac_pci_sysfs_refcount = ATOMIC_INIT(0);
39633@@ -235,7 +235,7 @@ struct edac_pci_dev_attribute {
39634 void *value;
39635 ssize_t(*show) (void *, char *);
39636 ssize_t(*store) (void *, const char *, size_t);
39637-};
39638+} __do_const;
39639
39640 /* Set of show/store abstract level functions for PCI Parity object */
39641 static ssize_t edac_pci_dev_show(struct kobject *kobj, struct attribute *attr,
39642@@ -579,7 +579,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
39643 edac_printk(KERN_CRIT, EDAC_PCI,
39644 "Signaled System Error on %s\n",
39645 pci_name(dev));
39646- atomic_inc(&pci_nonparity_count);
39647+ atomic_inc_unchecked(&pci_nonparity_count);
39648 }
39649
39650 if (status & (PCI_STATUS_PARITY)) {
39651@@ -587,7 +587,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
39652 "Master Data Parity Error on %s\n",
39653 pci_name(dev));
39654
39655- atomic_inc(&pci_parity_count);
39656+ atomic_inc_unchecked(&pci_parity_count);
39657 }
39658
39659 if (status & (PCI_STATUS_DETECTED_PARITY)) {
39660@@ -595,7 +595,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
39661 "Detected Parity Error on %s\n",
39662 pci_name(dev));
39663
39664- atomic_inc(&pci_parity_count);
39665+ atomic_inc_unchecked(&pci_parity_count);
39666 }
39667 }
39668
39669@@ -618,7 +618,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
39670 edac_printk(KERN_CRIT, EDAC_PCI, "Bridge "
39671 "Signaled System Error on %s\n",
39672 pci_name(dev));
39673- atomic_inc(&pci_nonparity_count);
39674+ atomic_inc_unchecked(&pci_nonparity_count);
39675 }
39676
39677 if (status & (PCI_STATUS_PARITY)) {
39678@@ -626,7 +626,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
39679 "Master Data Parity Error on "
39680 "%s\n", pci_name(dev));
39681
39682- atomic_inc(&pci_parity_count);
39683+ atomic_inc_unchecked(&pci_parity_count);
39684 }
39685
39686 if (status & (PCI_STATUS_DETECTED_PARITY)) {
39687@@ -634,7 +634,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev)
39688 "Detected Parity Error on %s\n",
39689 pci_name(dev));
39690
39691- atomic_inc(&pci_parity_count);
39692+ atomic_inc_unchecked(&pci_parity_count);
39693 }
39694 }
39695 }
39696@@ -672,7 +672,7 @@ void edac_pci_do_parity_check(void)
39697 if (!check_pci_errors)
39698 return;
39699
39700- before_count = atomic_read(&pci_parity_count);
39701+ before_count = atomic_read_unchecked(&pci_parity_count);
39702
39703 /* scan all PCI devices looking for a Parity Error on devices and
39704 * bridges.
39705@@ -684,7 +684,7 @@ void edac_pci_do_parity_check(void)
39706 /* Only if operator has selected panic on PCI Error */
39707 if (edac_pci_get_panic_on_pe()) {
39708 /* If the count is different 'after' from 'before' */
39709- if (before_count != atomic_read(&pci_parity_count))
39710+ if (before_count != atomic_read_unchecked(&pci_parity_count))
39711 panic("EDAC: PCI Parity Error");
39712 }
39713 }
39714diff --git a/drivers/edac/mce_amd.h b/drivers/edac/mce_amd.h
39715index 51b7e3a..aa8a3e8 100644
39716--- a/drivers/edac/mce_amd.h
39717+++ b/drivers/edac/mce_amd.h
39718@@ -77,7 +77,7 @@ struct amd_decoder_ops {
39719 bool (*mc0_mce)(u16, u8);
39720 bool (*mc1_mce)(u16, u8);
39721 bool (*mc2_mce)(u16, u8);
39722-};
39723+} __no_const;
39724
39725 void amd_report_gart_errors(bool);
39726 void amd_register_ecc_decoder(void (*f)(int, struct mce *));
39727diff --git a/drivers/firewire/core-card.c b/drivers/firewire/core-card.c
39728index 57ea7f4..af06b76 100644
39729--- a/drivers/firewire/core-card.c
39730+++ b/drivers/firewire/core-card.c
39731@@ -528,9 +528,9 @@ void fw_card_initialize(struct fw_card *card,
39732 const struct fw_card_driver *driver,
39733 struct device *device)
39734 {
39735- static atomic_t index = ATOMIC_INIT(-1);
39736+ static atomic_unchecked_t index = ATOMIC_INIT(-1);
39737
39738- card->index = atomic_inc_return(&index);
39739+ card->index = atomic_inc_return_unchecked(&index);
39740 card->driver = driver;
39741 card->device = device;
39742 card->current_tlabel = 0;
39743@@ -680,7 +680,7 @@ EXPORT_SYMBOL_GPL(fw_card_release);
39744
39745 void fw_core_remove_card(struct fw_card *card)
39746 {
39747- struct fw_card_driver dummy_driver = dummy_driver_template;
39748+ fw_card_driver_no_const dummy_driver = dummy_driver_template;
39749
39750 card->driver->update_phy_reg(card, 4,
39751 PHY_LINK_ACTIVE | PHY_CONTENDER, 0);
39752diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c
39753index 2c6d5e1..a2cca6b 100644
39754--- a/drivers/firewire/core-device.c
39755+++ b/drivers/firewire/core-device.c
39756@@ -253,7 +253,7 @@ EXPORT_SYMBOL(fw_device_enable_phys_dma);
39757 struct config_rom_attribute {
39758 struct device_attribute attr;
39759 u32 key;
39760-};
39761+} __do_const;
39762
39763 static ssize_t show_immediate(struct device *dev,
39764 struct device_attribute *dattr, char *buf)
39765diff --git a/drivers/firewire/core-transaction.c b/drivers/firewire/core-transaction.c
39766index eb6935c..3cc2bfa 100644
39767--- a/drivers/firewire/core-transaction.c
39768+++ b/drivers/firewire/core-transaction.c
39769@@ -38,6 +38,7 @@
39770 #include <linux/timer.h>
39771 #include <linux/types.h>
39772 #include <linux/workqueue.h>
39773+#include <linux/sched.h>
39774
39775 #include <asm/byteorder.h>
39776
39777diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h
39778index f477308..2795f24 100644
39779--- a/drivers/firewire/core.h
39780+++ b/drivers/firewire/core.h
39781@@ -111,6 +111,7 @@ struct fw_card_driver {
39782
39783 int (*stop_iso)(struct fw_iso_context *ctx);
39784 };
39785+typedef struct fw_card_driver __no_const fw_card_driver_no_const;
39786
39787 void fw_card_initialize(struct fw_card *card,
39788 const struct fw_card_driver *driver, struct device *device);
39789diff --git a/drivers/firewire/ohci.c b/drivers/firewire/ohci.c
39790index 586f2f7..3545ad2 100644
39791--- a/drivers/firewire/ohci.c
39792+++ b/drivers/firewire/ohci.c
39793@@ -2049,10 +2049,12 @@ static void bus_reset_work(struct work_struct *work)
39794 be32_to_cpu(ohci->next_header));
39795 }
39796
39797+#ifndef CONFIG_GRKERNSEC
39798 if (param_remote_dma) {
39799 reg_write(ohci, OHCI1394_PhyReqFilterHiSet, ~0);
39800 reg_write(ohci, OHCI1394_PhyReqFilterLoSet, ~0);
39801 }
39802+#endif
39803
39804 spin_unlock_irq(&ohci->lock);
39805
39806@@ -2584,8 +2586,10 @@ static int ohci_enable_phys_dma(struct fw_card *card,
39807 unsigned long flags;
39808 int n, ret = 0;
39809
39810+#ifndef CONFIG_GRKERNSEC
39811 if (param_remote_dma)
39812 return 0;
39813+#endif
39814
39815 /*
39816 * FIXME: Make sure this bitmask is cleared when we clear the busReset
39817diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c
39818index 94a58a0..f5eba42 100644
39819--- a/drivers/firmware/dmi-id.c
39820+++ b/drivers/firmware/dmi-id.c
39821@@ -16,7 +16,7 @@
39822 struct dmi_device_attribute{
39823 struct device_attribute dev_attr;
39824 int field;
39825-};
39826+} __do_const;
39827 #define to_dmi_dev_attr(_dev_attr) \
39828 container_of(_dev_attr, struct dmi_device_attribute, dev_attr)
39829
39830diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
39831index 17afc51..0ef90cd 100644
39832--- a/drivers/firmware/dmi_scan.c
39833+++ b/drivers/firmware/dmi_scan.c
39834@@ -835,7 +835,7 @@ int dmi_walk(void (*decode)(const struct dmi_header *, void *),
39835 if (buf == NULL)
39836 return -1;
39837
39838- dmi_table(buf, dmi_len, dmi_num, decode, private_data);
39839+ dmi_table((char __force_kernel *)buf, dmi_len, dmi_num, decode, private_data);
39840
39841 dmi_unmap(buf);
39842 return 0;
39843diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c
39844index 1491dd4..aa910db 100644
39845--- a/drivers/firmware/efi/cper.c
39846+++ b/drivers/firmware/efi/cper.c
39847@@ -41,12 +41,12 @@
39848 */
39849 u64 cper_next_record_id(void)
39850 {
39851- static atomic64_t seq;
39852+ static atomic64_unchecked_t seq;
39853
39854- if (!atomic64_read(&seq))
39855- atomic64_set(&seq, ((u64)get_seconds()) << 32);
39856+ if (!atomic64_read_unchecked(&seq))
39857+ atomic64_set_unchecked(&seq, ((u64)get_seconds()) << 32);
39858
39859- return atomic64_inc_return(&seq);
39860+ return atomic64_inc_return_unchecked(&seq);
39861 }
39862 EXPORT_SYMBOL_GPL(cper_next_record_id);
39863
39864diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
39865index af20f17..4e4e545 100644
39866--- a/drivers/firmware/efi/efi.c
39867+++ b/drivers/firmware/efi/efi.c
39868@@ -120,14 +120,16 @@ static struct attribute_group efi_subsys_attr_group = {
39869 };
39870
39871 static struct efivars generic_efivars;
39872-static struct efivar_operations generic_ops;
39873+static efivar_operations_no_const generic_ops __read_only;
39874
39875 static int generic_ops_register(void)
39876 {
39877- generic_ops.get_variable = efi.get_variable;
39878- generic_ops.set_variable = efi.set_variable;
39879- generic_ops.get_next_variable = efi.get_next_variable;
39880- generic_ops.query_variable_store = efi_query_variable_store;
39881+ pax_open_kernel();
39882+ *(void **)&generic_ops.get_variable = efi.get_variable;
39883+ *(void **)&generic_ops.set_variable = efi.set_variable;
39884+ *(void **)&generic_ops.get_next_variable = efi.get_next_variable;
39885+ *(void **)&generic_ops.query_variable_store = efi_query_variable_store;
39886+ pax_close_kernel();
39887
39888 return efivars_register(&generic_efivars, &generic_ops, efi_kobj);
39889 }
39890diff --git a/drivers/firmware/efi/efivars.c b/drivers/firmware/efi/efivars.c
39891index 50ea412..caccd6e9 100644
39892--- a/drivers/firmware/efi/efivars.c
39893+++ b/drivers/firmware/efi/efivars.c
39894@@ -456,7 +456,7 @@ efivar_create_sysfs_entry(struct efivar_entry *new_var)
39895 static int
39896 create_efivars_bin_attributes(void)
39897 {
39898- struct bin_attribute *attr;
39899+ bin_attribute_no_const *attr;
39900 int error;
39901
39902 /* new_var */
39903diff --git a/drivers/firmware/google/memconsole.c b/drivers/firmware/google/memconsole.c
39904index 2f569aa..c95f4fb 100644
39905--- a/drivers/firmware/google/memconsole.c
39906+++ b/drivers/firmware/google/memconsole.c
39907@@ -155,7 +155,10 @@ static int __init memconsole_init(void)
39908 if (!found_memconsole())
39909 return -ENODEV;
39910
39911- memconsole_bin_attr.size = memconsole_length;
39912+ pax_open_kernel();
39913+ *(size_t *)&memconsole_bin_attr.size = memconsole_length;
39914+ pax_close_kernel();
39915+
39916 return sysfs_create_bin_file(firmware_kobj, &memconsole_bin_attr);
39917 }
39918
39919diff --git a/drivers/gpio/gpio-em.c b/drivers/gpio/gpio-em.c
39920index 8765bd6..2e5b147 100644
39921--- a/drivers/gpio/gpio-em.c
39922+++ b/drivers/gpio/gpio-em.c
39923@@ -278,7 +278,7 @@ static int em_gio_probe(struct platform_device *pdev)
39924 struct em_gio_priv *p;
39925 struct resource *io[2], *irq[2];
39926 struct gpio_chip *gpio_chip;
39927- struct irq_chip *irq_chip;
39928+ irq_chip_no_const *irq_chip;
39929 const char *name = dev_name(&pdev->dev);
39930 int ret;
39931
39932diff --git a/drivers/gpio/gpio-ich.c b/drivers/gpio/gpio-ich.c
39933index 7030422..42a3fe9 100644
39934--- a/drivers/gpio/gpio-ich.c
39935+++ b/drivers/gpio/gpio-ich.c
39936@@ -94,7 +94,7 @@ struct ichx_desc {
39937 * this option allows driver caching written output values
39938 */
39939 bool use_outlvl_cache;
39940-};
39941+} __do_const;
39942
39943 static struct {
39944 spinlock_t lock;
39945diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
39946index 03c9148..c66e753 100644
39947--- a/drivers/gpio/gpio-rcar.c
39948+++ b/drivers/gpio/gpio-rcar.c
39949@@ -355,7 +355,7 @@ static int gpio_rcar_probe(struct platform_device *pdev)
39950 struct gpio_rcar_priv *p;
39951 struct resource *io, *irq;
39952 struct gpio_chip *gpio_chip;
39953- struct irq_chip *irq_chip;
39954+ irq_chip_no_const *irq_chip;
39955 struct device *dev = &pdev->dev;
39956 const char *name = dev_name(dev);
39957 int ret;
39958diff --git a/drivers/gpio/gpio-vr41xx.c b/drivers/gpio/gpio-vr41xx.c
39959index 66cbcc1..0c5e622 100644
39960--- a/drivers/gpio/gpio-vr41xx.c
39961+++ b/drivers/gpio/gpio-vr41xx.c
39962@@ -224,7 +224,7 @@ static int giu_get_irq(unsigned int irq)
39963 printk(KERN_ERR "spurious GIU interrupt: %04x(%04x),%04x(%04x)\n",
39964 maskl, pendl, maskh, pendh);
39965
39966- atomic_inc(&irq_err_count);
39967+ atomic_inc_unchecked(&irq_err_count);
39968
39969 return -EINVAL;
39970 }
39971diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
39972index d8b7099..8a314a5 100644
39973--- a/drivers/gpu/drm/drm_crtc.c
39974+++ b/drivers/gpu/drm/drm_crtc.c
39975@@ -3500,7 +3500,7 @@ int drm_mode_getproperty_ioctl(struct drm_device *dev,
39976 goto done;
39977 }
39978
39979- if (copy_to_user(&enum_ptr[copied].name,
39980+ if (copy_to_user(enum_ptr[copied].name,
39981 &prop_enum->name, DRM_PROP_NAME_LEN)) {
39982 ret = -EFAULT;
39983 goto done;
39984diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
39985old mode 100644
39986new mode 100755
39987index 03711d0..9960928a
39988--- a/drivers/gpu/drm/drm_drv.c
39989+++ b/drivers/gpu/drm/drm_drv.c
39990@@ -233,7 +233,7 @@ module_exit(drm_core_exit);
39991 /**
39992 * Copy and IOCTL return string to user space
39993 */
39994-static int drm_copy_field(char *buf, size_t *buf_len, const char *value)
39995+static int drm_copy_field(char __user *buf, size_t *buf_len, const char *value)
39996 {
39997 int len;
39998
39999@@ -342,7 +342,7 @@ long drm_ioctl(struct file *filp,
40000 struct drm_file *file_priv = filp->private_data;
40001 struct drm_device *dev;
40002 const struct drm_ioctl_desc *ioctl = NULL;
40003- drm_ioctl_t *func;
40004+ drm_ioctl_no_const_t func;
40005 unsigned int nr = DRM_IOCTL_NR(cmd);
40006 int retcode = -EINVAL;
40007 char stack_kdata[128];
40008@@ -419,8 +419,9 @@ long drm_ioctl(struct file *filp,
40009 retcode = -EFAULT;
40010 goto err_i1;
40011 }
40012- } else
40013+ } else if (cmd & IOC_OUT) {
40014 memset(kdata, 0, usize);
40015+ }
40016
40017 if (ioctl->flags & DRM_UNLOCKED)
40018 retcode = func(dev, kdata, file_priv);
40019diff --git a/drivers/gpu/drm/drm_fops.c b/drivers/gpu/drm/drm_fops.c
40020index e1eba0b..98f69f9 100644
40021--- a/drivers/gpu/drm/drm_fops.c
40022+++ b/drivers/gpu/drm/drm_fops.c
40023@@ -89,7 +89,7 @@ int drm_open(struct inode *inode, struct file *filp)
40024 return PTR_ERR(minor);
40025
40026 dev = minor->dev;
40027- if (!dev->open_count++)
40028+ if (local_inc_return(&dev->open_count) == 1)
40029 need_setup = 1;
40030
40031 /* share address_space across all char-devs of a single device */
40032@@ -106,7 +106,7 @@ int drm_open(struct inode *inode, struct file *filp)
40033 return 0;
40034
40035 err_undo:
40036- dev->open_count--;
40037+ local_dec(&dev->open_count);
40038 drm_minor_release(minor);
40039 return retcode;
40040 }
40041@@ -430,7 +430,7 @@ int drm_release(struct inode *inode, struct file *filp)
40042
40043 mutex_lock(&drm_global_mutex);
40044
40045- DRM_DEBUG("open_count = %d\n", dev->open_count);
40046+ DRM_DEBUG("open_count = %ld\n", local_read(&dev->open_count));
40047
40048 if (dev->driver->preclose)
40049 dev->driver->preclose(dev, file_priv);
40050@@ -439,10 +439,10 @@ int drm_release(struct inode *inode, struct file *filp)
40051 * Begin inline drm_release
40052 */
40053
40054- DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
40055+ DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %ld\n",
40056 task_pid_nr(current),
40057 (long)old_encode_dev(file_priv->minor->kdev->devt),
40058- dev->open_count);
40059+ local_read(&dev->open_count));
40060
40061 /* Release any auth tokens that might point to this file_priv,
40062 (do that under the drm_global_mutex) */
40063@@ -543,7 +543,7 @@ int drm_release(struct inode *inode, struct file *filp)
40064 * End inline drm_release
40065 */
40066
40067- if (!--dev->open_count) {
40068+ if (local_dec_and_test(&dev->open_count)) {
40069 retcode = drm_lastclose(dev);
40070 if (drm_device_is_unplugged(dev))
40071 drm_put_dev(dev);
40072diff --git a/drivers/gpu/drm/drm_global.c b/drivers/gpu/drm/drm_global.c
40073index 3d2e91c..d31c4c9 100644
40074--- a/drivers/gpu/drm/drm_global.c
40075+++ b/drivers/gpu/drm/drm_global.c
40076@@ -36,7 +36,7 @@
40077 struct drm_global_item {
40078 struct mutex mutex;
40079 void *object;
40080- int refcount;
40081+ atomic_t refcount;
40082 };
40083
40084 static struct drm_global_item glob[DRM_GLOBAL_NUM];
40085@@ -49,7 +49,7 @@ void drm_global_init(void)
40086 struct drm_global_item *item = &glob[i];
40087 mutex_init(&item->mutex);
40088 item->object = NULL;
40089- item->refcount = 0;
40090+ atomic_set(&item->refcount, 0);
40091 }
40092 }
40093
40094@@ -59,7 +59,7 @@ void drm_global_release(void)
40095 for (i = 0; i < DRM_GLOBAL_NUM; ++i) {
40096 struct drm_global_item *item = &glob[i];
40097 BUG_ON(item->object != NULL);
40098- BUG_ON(item->refcount != 0);
40099+ BUG_ON(atomic_read(&item->refcount) != 0);
40100 }
40101 }
40102
40103@@ -69,7 +69,7 @@ int drm_global_item_ref(struct drm_global_reference *ref)
40104 struct drm_global_item *item = &glob[ref->global_type];
40105
40106 mutex_lock(&item->mutex);
40107- if (item->refcount == 0) {
40108+ if (atomic_read(&item->refcount) == 0) {
40109 item->object = kzalloc(ref->size, GFP_KERNEL);
40110 if (unlikely(item->object == NULL)) {
40111 ret = -ENOMEM;
40112@@ -82,7 +82,7 @@ int drm_global_item_ref(struct drm_global_reference *ref)
40113 goto out_err;
40114
40115 }
40116- ++item->refcount;
40117+ atomic_inc(&item->refcount);
40118 ref->object = item->object;
40119 mutex_unlock(&item->mutex);
40120 return 0;
40121@@ -98,9 +98,9 @@ void drm_global_item_unref(struct drm_global_reference *ref)
40122 struct drm_global_item *item = &glob[ref->global_type];
40123
40124 mutex_lock(&item->mutex);
40125- BUG_ON(item->refcount == 0);
40126+ BUG_ON(atomic_read(&item->refcount) == 0);
40127 BUG_ON(ref->object != item->object);
40128- if (--item->refcount == 0) {
40129+ if (atomic_dec_and_test(&item->refcount)) {
40130 ref->release(ref);
40131 item->object = NULL;
40132 }
40133diff --git a/drivers/gpu/drm/drm_info.c b/drivers/gpu/drm/drm_info.c
40134index 7473035..a48b9c5 100644
40135--- a/drivers/gpu/drm/drm_info.c
40136+++ b/drivers/gpu/drm/drm_info.c
40137@@ -75,10 +75,13 @@ int drm_vm_info(struct seq_file *m, void *data)
40138 struct drm_local_map *map;
40139 struct drm_map_list *r_list;
40140
40141- /* Hardcoded from _DRM_FRAME_BUFFER,
40142- _DRM_REGISTERS, _DRM_SHM, _DRM_AGP, and
40143- _DRM_SCATTER_GATHER and _DRM_CONSISTENT */
40144- const char *types[] = { "FB", "REG", "SHM", "AGP", "SG", "PCI" };
40145+ static const char * const types[] = {
40146+ [_DRM_FRAME_BUFFER] = "FB",
40147+ [_DRM_REGISTERS] = "REG",
40148+ [_DRM_SHM] = "SHM",
40149+ [_DRM_AGP] = "AGP",
40150+ [_DRM_SCATTER_GATHER] = "SG",
40151+ [_DRM_CONSISTENT] = "PCI"};
40152 const char *type;
40153 int i;
40154
40155@@ -89,7 +92,7 @@ int drm_vm_info(struct seq_file *m, void *data)
40156 map = r_list->map;
40157 if (!map)
40158 continue;
40159- if (map->type < 0 || map->type > 5)
40160+ if (map->type >= ARRAY_SIZE(types))
40161 type = "??";
40162 else
40163 type = types[map->type];
40164@@ -261,7 +264,11 @@ int drm_vma_info(struct seq_file *m, void *data)
40165 vma->vm_flags & VM_MAYSHARE ? 's' : 'p',
40166 vma->vm_flags & VM_LOCKED ? 'l' : '-',
40167 vma->vm_flags & VM_IO ? 'i' : '-',
40168+#ifdef CONFIG_GRKERNSEC_HIDESYM
40169+ 0);
40170+#else
40171 vma->vm_pgoff);
40172+#endif
40173
40174 #if defined(__i386__)
40175 pgprot = pgprot_val(vma->vm_page_prot);
40176diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
40177index 2f4c4343..dd12cd2 100644
40178--- a/drivers/gpu/drm/drm_ioc32.c
40179+++ b/drivers/gpu/drm/drm_ioc32.c
40180@@ -457,7 +457,7 @@ static int compat_drm_infobufs(struct file *file, unsigned int cmd,
40181 request = compat_alloc_user_space(nbytes);
40182 if (!access_ok(VERIFY_WRITE, request, nbytes))
40183 return -EFAULT;
40184- list = (struct drm_buf_desc *) (request + 1);
40185+ list = (struct drm_buf_desc __user *) (request + 1);
40186
40187 if (__put_user(count, &request->count)
40188 || __put_user(list, &request->list))
40189@@ -518,7 +518,7 @@ static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
40190 request = compat_alloc_user_space(nbytes);
40191 if (!access_ok(VERIFY_WRITE, request, nbytes))
40192 return -EFAULT;
40193- list = (struct drm_buf_pub *) (request + 1);
40194+ list = (struct drm_buf_pub __user *) (request + 1);
40195
40196 if (__put_user(count, &request->count)
40197 || __put_user(list, &request->list))
40198@@ -1016,7 +1016,7 @@ static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
40199 return 0;
40200 }
40201
40202-drm_ioctl_compat_t *drm_compat_ioctls[] = {
40203+drm_ioctl_compat_t drm_compat_ioctls[] = {
40204 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
40205 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
40206 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
40207@@ -1062,7 +1062,6 @@ drm_ioctl_compat_t *drm_compat_ioctls[] = {
40208 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
40209 {
40210 unsigned int nr = DRM_IOCTL_NR(cmd);
40211- drm_ioctl_compat_t *fn;
40212 int ret;
40213
40214 /* Assume that ioctls without an explicit compat routine will just
40215@@ -1072,10 +1071,8 @@ long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
40216 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
40217 return drm_ioctl(filp, cmd, arg);
40218
40219- fn = drm_compat_ioctls[nr];
40220-
40221- if (fn != NULL)
40222- ret = (*fn) (filp, cmd, arg);
40223+ if (drm_compat_ioctls[nr] != NULL)
40224+ ret = (*drm_compat_ioctls[nr]) (filp, cmd, arg);
40225 else
40226 ret = drm_ioctl(filp, cmd, arg);
40227
40228diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
40229index 4c24c3a..c903cab 100644
40230--- a/drivers/gpu/drm/drm_stub.c
40231+++ b/drivers/gpu/drm/drm_stub.c
40232@@ -455,7 +455,7 @@ void drm_unplug_dev(struct drm_device *dev)
40233
40234 drm_device_set_unplugged(dev);
40235
40236- if (dev->open_count == 0) {
40237+ if (local_read(&dev->open_count) == 0) {
40238 drm_put_dev(dev);
40239 }
40240 mutex_unlock(&drm_global_mutex);
40241diff --git a/drivers/gpu/drm/drm_sysfs.c b/drivers/gpu/drm/drm_sysfs.c
40242index c22c309..ae758c3 100644
40243--- a/drivers/gpu/drm/drm_sysfs.c
40244+++ b/drivers/gpu/drm/drm_sysfs.c
40245@@ -505,7 +505,7 @@ static void drm_sysfs_release(struct device *dev)
40246 */
40247 int drm_sysfs_device_add(struct drm_minor *minor)
40248 {
40249- char *minor_str;
40250+ const char *minor_str;
40251 int r;
40252
40253 if (minor->type == DRM_MINOR_CONTROL)
40254diff --git a/drivers/gpu/drm/i810/i810_drv.h b/drivers/gpu/drm/i810/i810_drv.h
40255index d4d16ed..8fb0b51 100644
40256--- a/drivers/gpu/drm/i810/i810_drv.h
40257+++ b/drivers/gpu/drm/i810/i810_drv.h
40258@@ -108,8 +108,8 @@ typedef struct drm_i810_private {
40259 int page_flipping;
40260
40261 wait_queue_head_t irq_queue;
40262- atomic_t irq_received;
40263- atomic_t irq_emitted;
40264+ atomic_unchecked_t irq_received;
40265+ atomic_unchecked_t irq_emitted;
40266
40267 int front_offset;
40268 } drm_i810_private_t;
40269diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
40270index eedb023..25076a4 100644
40271--- a/drivers/gpu/drm/i915/i915_dma.c
40272+++ b/drivers/gpu/drm/i915/i915_dma.c
40273@@ -1280,7 +1280,7 @@ static bool i915_switcheroo_can_switch(struct pci_dev *pdev)
40274 bool can_switch;
40275
40276 spin_lock(&dev->count_lock);
40277- can_switch = (dev->open_count == 0);
40278+ can_switch = (local_read(&dev->open_count) == 0);
40279 spin_unlock(&dev->count_lock);
40280 return can_switch;
40281 }
40282diff --git a/drivers/gpu/drm/i915/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
40283index 20fef6c..76c78fb 100644
40284--- a/drivers/gpu/drm/i915/i915_gem_execbuffer.c
40285+++ b/drivers/gpu/drm/i915/i915_gem_execbuffer.c
40286@@ -886,9 +886,9 @@ i915_gem_check_execbuffer(struct drm_i915_gem_execbuffer2 *exec)
40287
40288 static int
40289 validate_exec_list(struct drm_i915_gem_exec_object2 *exec,
40290- int count)
40291+ unsigned int count)
40292 {
40293- int i;
40294+ unsigned int i;
40295 unsigned relocs_total = 0;
40296 unsigned relocs_max = UINT_MAX / sizeof(struct drm_i915_gem_relocation_entry);
40297
40298diff --git a/drivers/gpu/drm/i915/i915_ioc32.c b/drivers/gpu/drm/i915/i915_ioc32.c
40299index 3c59584..500f2e9 100644
40300--- a/drivers/gpu/drm/i915/i915_ioc32.c
40301+++ b/drivers/gpu/drm/i915/i915_ioc32.c
40302@@ -181,7 +181,7 @@ static int compat_i915_alloc(struct file *file, unsigned int cmd,
40303 (unsigned long)request);
40304 }
40305
40306-static drm_ioctl_compat_t *i915_compat_ioctls[] = {
40307+static drm_ioctl_compat_t i915_compat_ioctls[] = {
40308 [DRM_I915_BATCHBUFFER] = compat_i915_batchbuffer,
40309 [DRM_I915_CMDBUFFER] = compat_i915_cmdbuffer,
40310 [DRM_I915_GETPARAM] = compat_i915_getparam,
40311@@ -202,18 +202,15 @@ static drm_ioctl_compat_t *i915_compat_ioctls[] = {
40312 long i915_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
40313 {
40314 unsigned int nr = DRM_IOCTL_NR(cmd);
40315- drm_ioctl_compat_t *fn = NULL;
40316 int ret;
40317
40318 if (nr < DRM_COMMAND_BASE)
40319 return drm_compat_ioctl(filp, cmd, arg);
40320
40321- if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(i915_compat_ioctls))
40322- fn = i915_compat_ioctls[nr - DRM_COMMAND_BASE];
40323-
40324- if (fn != NULL)
40325+ if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(i915_compat_ioctls)) {
40326+ drm_ioctl_compat_t fn = i915_compat_ioctls[nr - DRM_COMMAND_BASE];
40327 ret = (*fn) (filp, cmd, arg);
40328- else
40329+ } else
40330 ret = drm_ioctl(filp, cmd, arg);
40331
40332 return ret;
40333diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
40334index 5b60e25..eac1625 100644
40335--- a/drivers/gpu/drm/i915/intel_display.c
40336+++ b/drivers/gpu/drm/i915/intel_display.c
40337@@ -11171,13 +11171,13 @@ struct intel_quirk {
40338 int subsystem_vendor;
40339 int subsystem_device;
40340 void (*hook)(struct drm_device *dev);
40341-};
40342+} __do_const;
40343
40344 /* For systems that don't have a meaningful PCI subdevice/subvendor ID */
40345 struct intel_dmi_quirk {
40346 void (*hook)(struct drm_device *dev);
40347 const struct dmi_system_id (*dmi_id_list)[];
40348-};
40349+} __do_const;
40350
40351 static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
40352 {
40353@@ -11185,18 +11185,20 @@ static int intel_dmi_reverse_brightness(const struct dmi_system_id *id)
40354 return 1;
40355 }
40356
40357-static const struct intel_dmi_quirk intel_dmi_quirks[] = {
40358+static const struct dmi_system_id intel_dmi_quirks_table[] = {
40359 {
40360- .dmi_id_list = &(const struct dmi_system_id[]) {
40361- {
40362- .callback = intel_dmi_reverse_brightness,
40363- .ident = "NCR Corporation",
40364- .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
40365- DMI_MATCH(DMI_PRODUCT_NAME, ""),
40366- },
40367- },
40368- { } /* terminating entry */
40369+ .callback = intel_dmi_reverse_brightness,
40370+ .ident = "NCR Corporation",
40371+ .matches = {DMI_MATCH(DMI_SYS_VENDOR, "NCR Corporation"),
40372+ DMI_MATCH(DMI_PRODUCT_NAME, ""),
40373 },
40374+ },
40375+ { } /* terminating entry */
40376+};
40377+
40378+static const struct intel_dmi_quirk intel_dmi_quirks[] = {
40379+ {
40380+ .dmi_id_list = &intel_dmi_quirks_table,
40381 .hook = quirk_invert_brightness,
40382 },
40383 };
40384diff --git a/drivers/gpu/drm/mga/mga_drv.h b/drivers/gpu/drm/mga/mga_drv.h
40385index fe45321..836fdca 100644
40386--- a/drivers/gpu/drm/mga/mga_drv.h
40387+++ b/drivers/gpu/drm/mga/mga_drv.h
40388@@ -120,9 +120,9 @@ typedef struct drm_mga_private {
40389 u32 clear_cmd;
40390 u32 maccess;
40391
40392- atomic_t vbl_received; /**< Number of vblanks received. */
40393+ atomic_unchecked_t vbl_received; /**< Number of vblanks received. */
40394 wait_queue_head_t fence_queue;
40395- atomic_t last_fence_retired;
40396+ atomic_unchecked_t last_fence_retired;
40397 u32 next_fence_to_post;
40398
40399 unsigned int fb_cpp;
40400diff --git a/drivers/gpu/drm/mga/mga_ioc32.c b/drivers/gpu/drm/mga/mga_ioc32.c
40401index 86b4bb8..ae237ad 100644
40402--- a/drivers/gpu/drm/mga/mga_ioc32.c
40403+++ b/drivers/gpu/drm/mga/mga_ioc32.c
40404@@ -190,7 +190,7 @@ static int compat_mga_dma_bootstrap(struct file *file, unsigned int cmd,
40405 return 0;
40406 }
40407
40408-drm_ioctl_compat_t *mga_compat_ioctls[] = {
40409+drm_ioctl_compat_t mga_compat_ioctls[] = {
40410 [DRM_MGA_INIT] = compat_mga_init,
40411 [DRM_MGA_GETPARAM] = compat_mga_getparam,
40412 [DRM_MGA_DMA_BOOTSTRAP] = compat_mga_dma_bootstrap,
40413@@ -208,18 +208,15 @@ drm_ioctl_compat_t *mga_compat_ioctls[] = {
40414 long mga_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
40415 {
40416 unsigned int nr = DRM_IOCTL_NR(cmd);
40417- drm_ioctl_compat_t *fn = NULL;
40418 int ret;
40419
40420 if (nr < DRM_COMMAND_BASE)
40421 return drm_compat_ioctl(filp, cmd, arg);
40422
40423- if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(mga_compat_ioctls))
40424- fn = mga_compat_ioctls[nr - DRM_COMMAND_BASE];
40425-
40426- if (fn != NULL)
40427+ if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(mga_compat_ioctls)) {
40428+ drm_ioctl_compat_t fn = mga_compat_ioctls[nr - DRM_COMMAND_BASE];
40429 ret = (*fn) (filp, cmd, arg);
40430- else
40431+ } else
40432 ret = drm_ioctl(filp, cmd, arg);
40433
40434 return ret;
40435diff --git a/drivers/gpu/drm/mga/mga_irq.c b/drivers/gpu/drm/mga/mga_irq.c
40436index 1b071b8..de8601a 100644
40437--- a/drivers/gpu/drm/mga/mga_irq.c
40438+++ b/drivers/gpu/drm/mga/mga_irq.c
40439@@ -43,7 +43,7 @@ u32 mga_get_vblank_counter(struct drm_device *dev, int crtc)
40440 if (crtc != 0)
40441 return 0;
40442
40443- return atomic_read(&dev_priv->vbl_received);
40444+ return atomic_read_unchecked(&dev_priv->vbl_received);
40445 }
40446
40447
40448@@ -59,7 +59,7 @@ irqreturn_t mga_driver_irq_handler(int irq, void *arg)
40449 /* VBLANK interrupt */
40450 if (status & MGA_VLINEPEN) {
40451 MGA_WRITE(MGA_ICLEAR, MGA_VLINEICLR);
40452- atomic_inc(&dev_priv->vbl_received);
40453+ atomic_inc_unchecked(&dev_priv->vbl_received);
40454 drm_handle_vblank(dev, 0);
40455 handled = 1;
40456 }
40457@@ -78,7 +78,7 @@ irqreturn_t mga_driver_irq_handler(int irq, void *arg)
40458 if ((prim_start & ~0x03) != (prim_end & ~0x03))
40459 MGA_WRITE(MGA_PRIMEND, prim_end);
40460
40461- atomic_inc(&dev_priv->last_fence_retired);
40462+ atomic_inc_unchecked(&dev_priv->last_fence_retired);
40463 wake_up(&dev_priv->fence_queue);
40464 handled = 1;
40465 }
40466@@ -129,7 +129,7 @@ int mga_driver_fence_wait(struct drm_device *dev, unsigned int *sequence)
40467 * using fences.
40468 */
40469 DRM_WAIT_ON(ret, dev_priv->fence_queue, 3 * HZ,
40470- (((cur_fence = atomic_read(&dev_priv->last_fence_retired))
40471+ (((cur_fence = atomic_read_unchecked(&dev_priv->last_fence_retired))
40472 - *sequence) <= (1 << 23)));
40473
40474 *sequence = cur_fence;
40475diff --git a/drivers/gpu/drm/nouveau/nouveau_bios.c b/drivers/gpu/drm/nouveau/nouveau_bios.c
40476index 8268a4c..5105708 100644
40477--- a/drivers/gpu/drm/nouveau/nouveau_bios.c
40478+++ b/drivers/gpu/drm/nouveau/nouveau_bios.c
40479@@ -965,7 +965,7 @@ static int parse_bit_tmds_tbl_entry(struct drm_device *dev, struct nvbios *bios,
40480 struct bit_table {
40481 const char id;
40482 int (* const parse_fn)(struct drm_device *, struct nvbios *, struct bit_entry *);
40483-};
40484+} __no_const;
40485
40486 #define BIT_TABLE(id, funcid) ((struct bit_table){ id, parse_bit_##funcid##_tbl_entry })
40487
40488diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.h b/drivers/gpu/drm/nouveau/nouveau_drm.h
40489index 7efbafa..19f8087 100644
40490--- a/drivers/gpu/drm/nouveau/nouveau_drm.h
40491+++ b/drivers/gpu/drm/nouveau/nouveau_drm.h
40492@@ -97,7 +97,6 @@ struct nouveau_drm {
40493 struct drm_global_reference mem_global_ref;
40494 struct ttm_bo_global_ref bo_global_ref;
40495 struct ttm_bo_device bdev;
40496- atomic_t validate_sequence;
40497 int (*move)(struct nouveau_channel *,
40498 struct ttm_buffer_object *,
40499 struct ttm_mem_reg *, struct ttm_mem_reg *);
40500diff --git a/drivers/gpu/drm/nouveau/nouveau_ioc32.c b/drivers/gpu/drm/nouveau/nouveau_ioc32.c
40501index c1a7e5a..38b8539 100644
40502--- a/drivers/gpu/drm/nouveau/nouveau_ioc32.c
40503+++ b/drivers/gpu/drm/nouveau/nouveau_ioc32.c
40504@@ -50,7 +50,7 @@ long nouveau_compat_ioctl(struct file *filp, unsigned int cmd,
40505 unsigned long arg)
40506 {
40507 unsigned int nr = DRM_IOCTL_NR(cmd);
40508- drm_ioctl_compat_t *fn = NULL;
40509+ drm_ioctl_compat_t fn = NULL;
40510 int ret;
40511
40512 if (nr < DRM_COMMAND_BASE)
40513diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
40514index ab0228f..20b756b 100644
40515--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
40516+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
40517@@ -130,11 +130,11 @@ nouveau_vram_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
40518 }
40519
40520 const struct ttm_mem_type_manager_func nouveau_vram_manager = {
40521- nouveau_vram_manager_init,
40522- nouveau_vram_manager_fini,
40523- nouveau_vram_manager_new,
40524- nouveau_vram_manager_del,
40525- nouveau_vram_manager_debug
40526+ .init = nouveau_vram_manager_init,
40527+ .takedown = nouveau_vram_manager_fini,
40528+ .get_node = nouveau_vram_manager_new,
40529+ .put_node = nouveau_vram_manager_del,
40530+ .debug = nouveau_vram_manager_debug
40531 };
40532
40533 static int
40534@@ -199,11 +199,11 @@ nouveau_gart_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
40535 }
40536
40537 const struct ttm_mem_type_manager_func nouveau_gart_manager = {
40538- nouveau_gart_manager_init,
40539- nouveau_gart_manager_fini,
40540- nouveau_gart_manager_new,
40541- nouveau_gart_manager_del,
40542- nouveau_gart_manager_debug
40543+ .init = nouveau_gart_manager_init,
40544+ .takedown = nouveau_gart_manager_fini,
40545+ .get_node = nouveau_gart_manager_new,
40546+ .put_node = nouveau_gart_manager_del,
40547+ .debug = nouveau_gart_manager_debug
40548 };
40549
40550 #include <core/subdev/vm/nv04.h>
40551@@ -271,11 +271,11 @@ nv04_gart_manager_debug(struct ttm_mem_type_manager *man, const char *prefix)
40552 }
40553
40554 const struct ttm_mem_type_manager_func nv04_gart_manager = {
40555- nv04_gart_manager_init,
40556- nv04_gart_manager_fini,
40557- nv04_gart_manager_new,
40558- nv04_gart_manager_del,
40559- nv04_gart_manager_debug
40560+ .init = nv04_gart_manager_init,
40561+ .takedown = nv04_gart_manager_fini,
40562+ .get_node = nv04_gart_manager_new,
40563+ .put_node = nv04_gart_manager_del,
40564+ .debug = nv04_gart_manager_debug
40565 };
40566
40567 int
40568diff --git a/drivers/gpu/drm/nouveau/nouveau_vga.c b/drivers/gpu/drm/nouveau/nouveau_vga.c
40569index fb84da3..d7ee463 100644
40570--- a/drivers/gpu/drm/nouveau/nouveau_vga.c
40571+++ b/drivers/gpu/drm/nouveau/nouveau_vga.c
40572@@ -67,7 +67,7 @@ nouveau_switcheroo_can_switch(struct pci_dev *pdev)
40573 bool can_switch;
40574
40575 spin_lock(&dev->count_lock);
40576- can_switch = (dev->open_count == 0);
40577+ can_switch = (local_read(&dev->open_count) == 0);
40578 spin_unlock(&dev->count_lock);
40579 return can_switch;
40580 }
40581diff --git a/drivers/gpu/drm/qxl/qxl_cmd.c b/drivers/gpu/drm/qxl/qxl_cmd.c
40582index eb89653..613cf71 100644
40583--- a/drivers/gpu/drm/qxl/qxl_cmd.c
40584+++ b/drivers/gpu/drm/qxl/qxl_cmd.c
40585@@ -285,27 +285,27 @@ static int wait_for_io_cmd_user(struct qxl_device *qdev, uint8_t val, long port,
40586 int ret;
40587
40588 mutex_lock(&qdev->async_io_mutex);
40589- irq_num = atomic_read(&qdev->irq_received_io_cmd);
40590+ irq_num = atomic_read_unchecked(&qdev->irq_received_io_cmd);
40591 if (qdev->last_sent_io_cmd > irq_num) {
40592 if (intr)
40593 ret = wait_event_interruptible_timeout(qdev->io_cmd_event,
40594- atomic_read(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
40595+ atomic_read_unchecked(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
40596 else
40597 ret = wait_event_timeout(qdev->io_cmd_event,
40598- atomic_read(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
40599+ atomic_read_unchecked(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
40600 /* 0 is timeout, just bail the "hw" has gone away */
40601 if (ret <= 0)
40602 goto out;
40603- irq_num = atomic_read(&qdev->irq_received_io_cmd);
40604+ irq_num = atomic_read_unchecked(&qdev->irq_received_io_cmd);
40605 }
40606 outb(val, addr);
40607 qdev->last_sent_io_cmd = irq_num + 1;
40608 if (intr)
40609 ret = wait_event_interruptible_timeout(qdev->io_cmd_event,
40610- atomic_read(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
40611+ atomic_read_unchecked(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
40612 else
40613 ret = wait_event_timeout(qdev->io_cmd_event,
40614- atomic_read(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
40615+ atomic_read_unchecked(&qdev->irq_received_io_cmd) > irq_num, 5*HZ);
40616 out:
40617 if (ret > 0)
40618 ret = 0;
40619diff --git a/drivers/gpu/drm/qxl/qxl_debugfs.c b/drivers/gpu/drm/qxl/qxl_debugfs.c
40620index c3c2bbd..bc3c0fb 100644
40621--- a/drivers/gpu/drm/qxl/qxl_debugfs.c
40622+++ b/drivers/gpu/drm/qxl/qxl_debugfs.c
40623@@ -42,10 +42,10 @@ qxl_debugfs_irq_received(struct seq_file *m, void *data)
40624 struct drm_info_node *node = (struct drm_info_node *) m->private;
40625 struct qxl_device *qdev = node->minor->dev->dev_private;
40626
40627- seq_printf(m, "%d\n", atomic_read(&qdev->irq_received));
40628- seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_display));
40629- seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_cursor));
40630- seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_io_cmd));
40631+ seq_printf(m, "%d\n", atomic_read_unchecked(&qdev->irq_received));
40632+ seq_printf(m, "%d\n", atomic_read_unchecked(&qdev->irq_received_display));
40633+ seq_printf(m, "%d\n", atomic_read_unchecked(&qdev->irq_received_cursor));
40634+ seq_printf(m, "%d\n", atomic_read_unchecked(&qdev->irq_received_io_cmd));
40635 seq_printf(m, "%d\n", qdev->irq_received_error);
40636 return 0;
40637 }
40638diff --git a/drivers/gpu/drm/qxl/qxl_drv.h b/drivers/gpu/drm/qxl/qxl_drv.h
40639index 36ed40b..0397633 100644
40640--- a/drivers/gpu/drm/qxl/qxl_drv.h
40641+++ b/drivers/gpu/drm/qxl/qxl_drv.h
40642@@ -290,10 +290,10 @@ struct qxl_device {
40643 unsigned int last_sent_io_cmd;
40644
40645 /* interrupt handling */
40646- atomic_t irq_received;
40647- atomic_t irq_received_display;
40648- atomic_t irq_received_cursor;
40649- atomic_t irq_received_io_cmd;
40650+ atomic_unchecked_t irq_received;
40651+ atomic_unchecked_t irq_received_display;
40652+ atomic_unchecked_t irq_received_cursor;
40653+ atomic_unchecked_t irq_received_io_cmd;
40654 unsigned irq_received_error;
40655 wait_queue_head_t display_event;
40656 wait_queue_head_t cursor_event;
40657diff --git a/drivers/gpu/drm/qxl/qxl_ioctl.c b/drivers/gpu/drm/qxl/qxl_ioctl.c
40658index 0bb86e6..d41416d 100644
40659--- a/drivers/gpu/drm/qxl/qxl_ioctl.c
40660+++ b/drivers/gpu/drm/qxl/qxl_ioctl.c
40661@@ -181,7 +181,7 @@ static int qxl_process_single_command(struct qxl_device *qdev,
40662
40663 /* TODO copy slow path code from i915 */
40664 fb_cmd = qxl_bo_kmap_atomic_page(qdev, cmd_bo, (release->release_offset & PAGE_SIZE));
40665- unwritten = __copy_from_user_inatomic_nocache(fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_SIZE), (void *)(unsigned long)cmd->command, cmd->command_size);
40666+ unwritten = __copy_from_user_inatomic_nocache(fb_cmd + sizeof(union qxl_release_info) + (release->release_offset & ~PAGE_SIZE), (void __force_user *)(unsigned long)cmd->command, cmd->command_size);
40667
40668 {
40669 struct qxl_drawable *draw = fb_cmd;
40670@@ -201,7 +201,7 @@ static int qxl_process_single_command(struct qxl_device *qdev,
40671 struct drm_qxl_reloc reloc;
40672
40673 if (copy_from_user(&reloc,
40674- &((struct drm_qxl_reloc *)(uintptr_t)cmd->relocs)[i],
40675+ &((struct drm_qxl_reloc __force_user *)(uintptr_t)cmd->relocs)[i],
40676 sizeof(reloc))) {
40677 ret = -EFAULT;
40678 goto out_free_bos;
40679@@ -294,10 +294,10 @@ static int qxl_execbuffer_ioctl(struct drm_device *dev, void *data,
40680
40681 for (cmd_num = 0; cmd_num < execbuffer->commands_num; ++cmd_num) {
40682
40683- struct drm_qxl_command *commands =
40684- (struct drm_qxl_command *)(uintptr_t)execbuffer->commands;
40685+ struct drm_qxl_command __user *commands =
40686+ (struct drm_qxl_command __user *)(uintptr_t)execbuffer->commands;
40687
40688- if (copy_from_user(&user_cmd, &commands[cmd_num],
40689+ if (copy_from_user(&user_cmd, (struct drm_qxl_command __force_user *)&commands[cmd_num],
40690 sizeof(user_cmd)))
40691 return -EFAULT;
40692
40693diff --git a/drivers/gpu/drm/qxl/qxl_irq.c b/drivers/gpu/drm/qxl/qxl_irq.c
40694index 28f84b4..fb3e224 100644
40695--- a/drivers/gpu/drm/qxl/qxl_irq.c
40696+++ b/drivers/gpu/drm/qxl/qxl_irq.c
40697@@ -33,19 +33,19 @@ irqreturn_t qxl_irq_handler(int irq, void *arg)
40698
40699 pending = xchg(&qdev->ram_header->int_pending, 0);
40700
40701- atomic_inc(&qdev->irq_received);
40702+ atomic_inc_unchecked(&qdev->irq_received);
40703
40704 if (pending & QXL_INTERRUPT_DISPLAY) {
40705- atomic_inc(&qdev->irq_received_display);
40706+ atomic_inc_unchecked(&qdev->irq_received_display);
40707 wake_up_all(&qdev->display_event);
40708 qxl_queue_garbage_collect(qdev, false);
40709 }
40710 if (pending & QXL_INTERRUPT_CURSOR) {
40711- atomic_inc(&qdev->irq_received_cursor);
40712+ atomic_inc_unchecked(&qdev->irq_received_cursor);
40713 wake_up_all(&qdev->cursor_event);
40714 }
40715 if (pending & QXL_INTERRUPT_IO_CMD) {
40716- atomic_inc(&qdev->irq_received_io_cmd);
40717+ atomic_inc_unchecked(&qdev->irq_received_io_cmd);
40718 wake_up_all(&qdev->io_cmd_event);
40719 }
40720 if (pending & QXL_INTERRUPT_ERROR) {
40721@@ -82,10 +82,10 @@ int qxl_irq_init(struct qxl_device *qdev)
40722 init_waitqueue_head(&qdev->io_cmd_event);
40723 INIT_WORK(&qdev->client_monitors_config_work,
40724 qxl_client_monitors_config_work_func);
40725- atomic_set(&qdev->irq_received, 0);
40726- atomic_set(&qdev->irq_received_display, 0);
40727- atomic_set(&qdev->irq_received_cursor, 0);
40728- atomic_set(&qdev->irq_received_io_cmd, 0);
40729+ atomic_set_unchecked(&qdev->irq_received, 0);
40730+ atomic_set_unchecked(&qdev->irq_received_display, 0);
40731+ atomic_set_unchecked(&qdev->irq_received_cursor, 0);
40732+ atomic_set_unchecked(&qdev->irq_received_io_cmd, 0);
40733 qdev->irq_received_error = 0;
40734 ret = drm_irq_install(qdev->ddev);
40735 qdev->ram_header->int_mask = QXL_INTERRUPT_MASK;
40736diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c
40737index d52c275..4e6b43d 100644
40738--- a/drivers/gpu/drm/qxl/qxl_ttm.c
40739+++ b/drivers/gpu/drm/qxl/qxl_ttm.c
40740@@ -103,7 +103,7 @@ static void qxl_ttm_global_fini(struct qxl_device *qdev)
40741 }
40742 }
40743
40744-static struct vm_operations_struct qxl_ttm_vm_ops;
40745+static vm_operations_struct_no_const qxl_ttm_vm_ops __read_only;
40746 static const struct vm_operations_struct *ttm_vm_ops;
40747
40748 static int qxl_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
40749@@ -147,8 +147,10 @@ int qxl_mmap(struct file *filp, struct vm_area_struct *vma)
40750 return r;
40751 if (unlikely(ttm_vm_ops == NULL)) {
40752 ttm_vm_ops = vma->vm_ops;
40753+ pax_open_kernel();
40754 qxl_ttm_vm_ops = *ttm_vm_ops;
40755 qxl_ttm_vm_ops.fault = &qxl_ttm_fault;
40756+ pax_close_kernel();
40757 }
40758 vma->vm_ops = &qxl_ttm_vm_ops;
40759 return 0;
40760@@ -561,25 +563,23 @@ static int qxl_mm_dump_table(struct seq_file *m, void *data)
40761 static int qxl_ttm_debugfs_init(struct qxl_device *qdev)
40762 {
40763 #if defined(CONFIG_DEBUG_FS)
40764- static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES];
40765- static char qxl_mem_types_names[QXL_DEBUGFS_MEM_TYPES][32];
40766- unsigned i;
40767+ static struct drm_info_list qxl_mem_types_list[QXL_DEBUGFS_MEM_TYPES] = {
40768+ {
40769+ .name = "qxl_mem_mm",
40770+ .show = &qxl_mm_dump_table,
40771+ },
40772+ {
40773+ .name = "qxl_surf_mm",
40774+ .show = &qxl_mm_dump_table,
40775+ }
40776+ };
40777
40778- for (i = 0; i < QXL_DEBUGFS_MEM_TYPES; i++) {
40779- if (i == 0)
40780- sprintf(qxl_mem_types_names[i], "qxl_mem_mm");
40781- else
40782- sprintf(qxl_mem_types_names[i], "qxl_surf_mm");
40783- qxl_mem_types_list[i].name = qxl_mem_types_names[i];
40784- qxl_mem_types_list[i].show = &qxl_mm_dump_table;
40785- qxl_mem_types_list[i].driver_features = 0;
40786- if (i == 0)
40787- qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
40788- else
40789- qxl_mem_types_list[i].data = qdev->mman.bdev.man[TTM_PL_PRIV0].priv;
40790+ pax_open_kernel();
40791+ *(void **)&qxl_mem_types_list[0].data = qdev->mman.bdev.man[TTM_PL_VRAM].priv;
40792+ *(void **)&qxl_mem_types_list[1].data = qdev->mman.bdev.man[TTM_PL_PRIV0].priv;
40793+ pax_close_kernel();
40794
40795- }
40796- return qxl_debugfs_add_files(qdev, qxl_mem_types_list, i);
40797+ return qxl_debugfs_add_files(qdev, qxl_mem_types_list, QXL_DEBUGFS_MEM_TYPES);
40798 #else
40799 return 0;
40800 #endif
40801diff --git a/drivers/gpu/drm/r128/r128_cce.c b/drivers/gpu/drm/r128/r128_cce.c
40802index 59459fe..be26b31 100644
40803--- a/drivers/gpu/drm/r128/r128_cce.c
40804+++ b/drivers/gpu/drm/r128/r128_cce.c
40805@@ -377,7 +377,7 @@ static int r128_do_init_cce(struct drm_device *dev, drm_r128_init_t *init)
40806
40807 /* GH: Simple idle check.
40808 */
40809- atomic_set(&dev_priv->idle_count, 0);
40810+ atomic_set_unchecked(&dev_priv->idle_count, 0);
40811
40812 /* We don't support anything other than bus-mastering ring mode,
40813 * but the ring can be in either AGP or PCI space for the ring
40814diff --git a/drivers/gpu/drm/r128/r128_drv.h b/drivers/gpu/drm/r128/r128_drv.h
40815index 5bf3f5f..7000661 100644
40816--- a/drivers/gpu/drm/r128/r128_drv.h
40817+++ b/drivers/gpu/drm/r128/r128_drv.h
40818@@ -90,14 +90,14 @@ typedef struct drm_r128_private {
40819 int is_pci;
40820 unsigned long cce_buffers_offset;
40821
40822- atomic_t idle_count;
40823+ atomic_unchecked_t idle_count;
40824
40825 int page_flipping;
40826 int current_page;
40827 u32 crtc_offset;
40828 u32 crtc_offset_cntl;
40829
40830- atomic_t vbl_received;
40831+ atomic_unchecked_t vbl_received;
40832
40833 u32 color_fmt;
40834 unsigned int front_offset;
40835diff --git a/drivers/gpu/drm/r128/r128_ioc32.c b/drivers/gpu/drm/r128/r128_ioc32.c
40836index b0d0fd3..a6fbbe4 100644
40837--- a/drivers/gpu/drm/r128/r128_ioc32.c
40838+++ b/drivers/gpu/drm/r128/r128_ioc32.c
40839@@ -178,7 +178,7 @@ static int compat_r128_getparam(struct file *file, unsigned int cmd,
40840 return drm_ioctl(file, DRM_IOCTL_R128_GETPARAM, (unsigned long)getparam);
40841 }
40842
40843-drm_ioctl_compat_t *r128_compat_ioctls[] = {
40844+drm_ioctl_compat_t r128_compat_ioctls[] = {
40845 [DRM_R128_INIT] = compat_r128_init,
40846 [DRM_R128_DEPTH] = compat_r128_depth,
40847 [DRM_R128_STIPPLE] = compat_r128_stipple,
40848@@ -197,18 +197,15 @@ drm_ioctl_compat_t *r128_compat_ioctls[] = {
40849 long r128_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
40850 {
40851 unsigned int nr = DRM_IOCTL_NR(cmd);
40852- drm_ioctl_compat_t *fn = NULL;
40853 int ret;
40854
40855 if (nr < DRM_COMMAND_BASE)
40856 return drm_compat_ioctl(filp, cmd, arg);
40857
40858- if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(r128_compat_ioctls))
40859- fn = r128_compat_ioctls[nr - DRM_COMMAND_BASE];
40860-
40861- if (fn != NULL)
40862+ if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(r128_compat_ioctls)) {
40863+ drm_ioctl_compat_t fn = r128_compat_ioctls[nr - DRM_COMMAND_BASE];
40864 ret = (*fn) (filp, cmd, arg);
40865- else
40866+ } else
40867 ret = drm_ioctl(filp, cmd, arg);
40868
40869 return ret;
40870diff --git a/drivers/gpu/drm/r128/r128_irq.c b/drivers/gpu/drm/r128/r128_irq.c
40871index c2ae496..30b5993 100644
40872--- a/drivers/gpu/drm/r128/r128_irq.c
40873+++ b/drivers/gpu/drm/r128/r128_irq.c
40874@@ -41,7 +41,7 @@ u32 r128_get_vblank_counter(struct drm_device *dev, int crtc)
40875 if (crtc != 0)
40876 return 0;
40877
40878- return atomic_read(&dev_priv->vbl_received);
40879+ return atomic_read_unchecked(&dev_priv->vbl_received);
40880 }
40881
40882 irqreturn_t r128_driver_irq_handler(int irq, void *arg)
40883@@ -55,7 +55,7 @@ irqreturn_t r128_driver_irq_handler(int irq, void *arg)
40884 /* VBLANK interrupt */
40885 if (status & R128_CRTC_VBLANK_INT) {
40886 R128_WRITE(R128_GEN_INT_STATUS, R128_CRTC_VBLANK_INT_AK);
40887- atomic_inc(&dev_priv->vbl_received);
40888+ atomic_inc_unchecked(&dev_priv->vbl_received);
40889 drm_handle_vblank(dev, 0);
40890 return IRQ_HANDLED;
40891 }
40892diff --git a/drivers/gpu/drm/r128/r128_state.c b/drivers/gpu/drm/r128/r128_state.c
40893index e806dac..f81d32f 100644
40894--- a/drivers/gpu/drm/r128/r128_state.c
40895+++ b/drivers/gpu/drm/r128/r128_state.c
40896@@ -320,10 +320,10 @@ static void r128_clear_box(drm_r128_private_t *dev_priv,
40897
40898 static void r128_cce_performance_boxes(drm_r128_private_t *dev_priv)
40899 {
40900- if (atomic_read(&dev_priv->idle_count) == 0)
40901+ if (atomic_read_unchecked(&dev_priv->idle_count) == 0)
40902 r128_clear_box(dev_priv, 64, 4, 8, 8, 0, 255, 0);
40903 else
40904- atomic_set(&dev_priv->idle_count, 0);
40905+ atomic_set_unchecked(&dev_priv->idle_count, 0);
40906 }
40907
40908 #endif
40909diff --git a/drivers/gpu/drm/radeon/mkregtable.c b/drivers/gpu/drm/radeon/mkregtable.c
40910index 4a85bb6..aaea819 100644
40911--- a/drivers/gpu/drm/radeon/mkregtable.c
40912+++ b/drivers/gpu/drm/radeon/mkregtable.c
40913@@ -624,14 +624,14 @@ static int parser_auth(struct table *t, const char *filename)
40914 regex_t mask_rex;
40915 regmatch_t match[4];
40916 char buf[1024];
40917- size_t end;
40918+ long end;
40919 int len;
40920 int done = 0;
40921 int r;
40922 unsigned o;
40923 struct offset *offset;
40924 char last_reg_s[10];
40925- int last_reg;
40926+ unsigned long last_reg;
40927
40928 if (regcomp
40929 (&mask_rex, "(0x[0-9a-fA-F]*) *([_a-zA-Z0-9]*)", REG_EXTENDED)) {
40930diff --git a/drivers/gpu/drm/radeon/radeon_device.c b/drivers/gpu/drm/radeon/radeon_device.c
40931index 2cd144c..a01c95a 100644
40932--- a/drivers/gpu/drm/radeon/radeon_device.c
40933+++ b/drivers/gpu/drm/radeon/radeon_device.c
40934@@ -1129,7 +1129,7 @@ static bool radeon_switcheroo_can_switch(struct pci_dev *pdev)
40935 bool can_switch;
40936
40937 spin_lock(&dev->count_lock);
40938- can_switch = (dev->open_count == 0);
40939+ can_switch = (local_read(&dev->open_count) == 0);
40940 spin_unlock(&dev->count_lock);
40941 return can_switch;
40942 }
40943diff --git a/drivers/gpu/drm/radeon/radeon_drv.h b/drivers/gpu/drm/radeon/radeon_drv.h
40944index dafd812..1bf20c7 100644
40945--- a/drivers/gpu/drm/radeon/radeon_drv.h
40946+++ b/drivers/gpu/drm/radeon/radeon_drv.h
40947@@ -262,7 +262,7 @@ typedef struct drm_radeon_private {
40948
40949 /* SW interrupt */
40950 wait_queue_head_t swi_queue;
40951- atomic_t swi_emitted;
40952+ atomic_unchecked_t swi_emitted;
40953 int vblank_crtc;
40954 uint32_t irq_enable_reg;
40955 uint32_t r500_disp_irq_reg;
40956diff --git a/drivers/gpu/drm/radeon/radeon_ioc32.c b/drivers/gpu/drm/radeon/radeon_ioc32.c
40957index bdb0f93..5ff558f 100644
40958--- a/drivers/gpu/drm/radeon/radeon_ioc32.c
40959+++ b/drivers/gpu/drm/radeon/radeon_ioc32.c
40960@@ -358,7 +358,7 @@ static int compat_radeon_cp_setparam(struct file *file, unsigned int cmd,
40961 request = compat_alloc_user_space(sizeof(*request));
40962 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
40963 || __put_user(req32.param, &request->param)
40964- || __put_user((void __user *)(unsigned long)req32.value,
40965+ || __put_user((unsigned long)req32.value,
40966 &request->value))
40967 return -EFAULT;
40968
40969@@ -368,7 +368,7 @@ static int compat_radeon_cp_setparam(struct file *file, unsigned int cmd,
40970 #define compat_radeon_cp_setparam NULL
40971 #endif /* X86_64 || IA64 */
40972
40973-static drm_ioctl_compat_t *radeon_compat_ioctls[] = {
40974+static drm_ioctl_compat_t radeon_compat_ioctls[] = {
40975 [DRM_RADEON_CP_INIT] = compat_radeon_cp_init,
40976 [DRM_RADEON_CLEAR] = compat_radeon_cp_clear,
40977 [DRM_RADEON_STIPPLE] = compat_radeon_cp_stipple,
40978@@ -393,18 +393,15 @@ static drm_ioctl_compat_t *radeon_compat_ioctls[] = {
40979 long radeon_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
40980 {
40981 unsigned int nr = DRM_IOCTL_NR(cmd);
40982- drm_ioctl_compat_t *fn = NULL;
40983 int ret;
40984
40985 if (nr < DRM_COMMAND_BASE)
40986 return drm_compat_ioctl(filp, cmd, arg);
40987
40988- if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(radeon_compat_ioctls))
40989- fn = radeon_compat_ioctls[nr - DRM_COMMAND_BASE];
40990-
40991- if (fn != NULL)
40992+ if (nr < DRM_COMMAND_BASE + DRM_ARRAY_SIZE(radeon_compat_ioctls)) {
40993+ drm_ioctl_compat_t fn = radeon_compat_ioctls[nr - DRM_COMMAND_BASE];
40994 ret = (*fn) (filp, cmd, arg);
40995- else
40996+ } else
40997 ret = drm_ioctl(filp, cmd, arg);
40998
40999 return ret;
41000diff --git a/drivers/gpu/drm/radeon/radeon_irq.c b/drivers/gpu/drm/radeon/radeon_irq.c
41001index 244b19b..c19226d 100644
41002--- a/drivers/gpu/drm/radeon/radeon_irq.c
41003+++ b/drivers/gpu/drm/radeon/radeon_irq.c
41004@@ -226,8 +226,8 @@ static int radeon_emit_irq(struct drm_device * dev)
41005 unsigned int ret;
41006 RING_LOCALS;
41007
41008- atomic_inc(&dev_priv->swi_emitted);
41009- ret = atomic_read(&dev_priv->swi_emitted);
41010+ atomic_inc_unchecked(&dev_priv->swi_emitted);
41011+ ret = atomic_read_unchecked(&dev_priv->swi_emitted);
41012
41013 BEGIN_RING(4);
41014 OUT_RING_REG(RADEON_LAST_SWI_REG, ret);
41015@@ -353,7 +353,7 @@ int radeon_driver_irq_postinstall(struct drm_device *dev)
41016 drm_radeon_private_t *dev_priv =
41017 (drm_radeon_private_t *) dev->dev_private;
41018
41019- atomic_set(&dev_priv->swi_emitted, 0);
41020+ atomic_set_unchecked(&dev_priv->swi_emitted, 0);
41021 init_waitqueue_head(&dev_priv->swi_queue);
41022
41023 dev->max_vblank_count = 0x001fffff;
41024diff --git a/drivers/gpu/drm/radeon/radeon_state.c b/drivers/gpu/drm/radeon/radeon_state.c
41025index 956ab7f..fbd36d8 100644
41026--- a/drivers/gpu/drm/radeon/radeon_state.c
41027+++ b/drivers/gpu/drm/radeon/radeon_state.c
41028@@ -2168,7 +2168,7 @@ static int radeon_cp_clear(struct drm_device *dev, void *data, struct drm_file *
41029 if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS)
41030 sarea_priv->nbox = RADEON_NR_SAREA_CLIPRECTS;
41031
41032- if (copy_from_user(&depth_boxes, clear->depth_boxes,
41033+ if (sarea_priv->nbox > RADEON_NR_SAREA_CLIPRECTS || copy_from_user(&depth_boxes, clear->depth_boxes,
41034 sarea_priv->nbox * sizeof(depth_boxes[0])))
41035 return -EFAULT;
41036
41037@@ -3031,7 +3031,7 @@ static int radeon_cp_getparam(struct drm_device *dev, void *data, struct drm_fil
41038 {
41039 drm_radeon_private_t *dev_priv = dev->dev_private;
41040 drm_radeon_getparam_t *param = data;
41041- int value;
41042+ int value = 0;
41043
41044 DRM_DEBUG("pid=%d\n", DRM_CURRENTPID);
41045
41046diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
41047index c8a8a51..219dacc 100644
41048--- a/drivers/gpu/drm/radeon/radeon_ttm.c
41049+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
41050@@ -797,7 +797,7 @@ void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size)
41051 man->size = size >> PAGE_SHIFT;
41052 }
41053
41054-static struct vm_operations_struct radeon_ttm_vm_ops;
41055+static vm_operations_struct_no_const radeon_ttm_vm_ops __read_only;
41056 static const struct vm_operations_struct *ttm_vm_ops = NULL;
41057
41058 static int radeon_ttm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
41059@@ -838,8 +838,10 @@ int radeon_mmap(struct file *filp, struct vm_area_struct *vma)
41060 }
41061 if (unlikely(ttm_vm_ops == NULL)) {
41062 ttm_vm_ops = vma->vm_ops;
41063+ pax_open_kernel();
41064 radeon_ttm_vm_ops = *ttm_vm_ops;
41065 radeon_ttm_vm_ops.fault = &radeon_ttm_fault;
41066+ pax_close_kernel();
41067 }
41068 vma->vm_ops = &radeon_ttm_vm_ops;
41069 return 0;
41070diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
41071index c11b71d..c8c48aa 100644
41072--- a/drivers/gpu/drm/radeon/radeon_vm.c
41073+++ b/drivers/gpu/drm/radeon/radeon_vm.c
41074@@ -493,7 +493,7 @@ int radeon_vm_bo_set_addr(struct radeon_device *rdev,
41075 mutex_unlock(&vm->mutex);
41076
41077 r = radeon_bo_create(rdev, RADEON_VM_PTE_COUNT * 8,
41078- RADEON_GPU_PAGE_SIZE, false,
41079+ RADEON_GPU_PAGE_SIZE, true,
41080 RADEON_GEM_DOMAIN_VRAM, NULL, &pt);
41081 if (r)
41082 return r;
41083@@ -913,7 +913,7 @@ int radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm)
41084 return -ENOMEM;
41085 }
41086
41087- r = radeon_bo_create(rdev, pd_size, RADEON_VM_PTB_ALIGN_SIZE, false,
41088+ r = radeon_bo_create(rdev, pd_size, RADEON_VM_PTB_ALIGN_SIZE, true,
41089 RADEON_GEM_DOMAIN_VRAM, NULL,
41090 &vm->page_directory);
41091 if (r)
41092diff --git a/drivers/gpu/drm/tegra/dc.c b/drivers/gpu/drm/tegra/dc.c
41093index edb871d..a275c6ed 100644
41094--- a/drivers/gpu/drm/tegra/dc.c
41095+++ b/drivers/gpu/drm/tegra/dc.c
41096@@ -1057,7 +1057,7 @@ static int tegra_dc_debugfs_init(struct tegra_dc *dc, struct drm_minor *minor)
41097 }
41098
41099 for (i = 0; i < ARRAY_SIZE(debugfs_files); i++)
41100- dc->debugfs_files[i].data = dc;
41101+ *(void **)&dc->debugfs_files[i].data = dc;
41102
41103 err = drm_debugfs_create_files(dc->debugfs_files,
41104 ARRAY_SIZE(debugfs_files),
41105diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
41106index 0e599f0..c9ea7c7 100644
41107--- a/drivers/gpu/drm/tegra/dsi.c
41108+++ b/drivers/gpu/drm/tegra/dsi.c
41109@@ -39,7 +39,7 @@ struct tegra_dsi {
41110 struct clk *clk_lp;
41111 struct clk *clk;
41112
41113- struct drm_info_list *debugfs_files;
41114+ drm_info_list_no_const *debugfs_files;
41115 struct drm_minor *minor;
41116 struct dentry *debugfs;
41117
41118diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
41119index 6928015..c9853e7 100644
41120--- a/drivers/gpu/drm/tegra/hdmi.c
41121+++ b/drivers/gpu/drm/tegra/hdmi.c
41122@@ -59,7 +59,7 @@ struct tegra_hdmi {
41123 bool stereo;
41124 bool dvi;
41125
41126- struct drm_info_list *debugfs_files;
41127+ drm_info_list_no_const *debugfs_files;
41128 struct drm_minor *minor;
41129 struct dentry *debugfs;
41130 };
41131diff --git a/drivers/gpu/drm/ttm/ttm_bo_manager.c b/drivers/gpu/drm/ttm/ttm_bo_manager.c
41132index bd850c9..d9f3573 100644
41133--- a/drivers/gpu/drm/ttm/ttm_bo_manager.c
41134+++ b/drivers/gpu/drm/ttm/ttm_bo_manager.c
41135@@ -146,10 +146,10 @@ static void ttm_bo_man_debug(struct ttm_mem_type_manager *man,
41136 }
41137
41138 const struct ttm_mem_type_manager_func ttm_bo_manager_func = {
41139- ttm_bo_man_init,
41140- ttm_bo_man_takedown,
41141- ttm_bo_man_get_node,
41142- ttm_bo_man_put_node,
41143- ttm_bo_man_debug
41144+ .init = ttm_bo_man_init,
41145+ .takedown = ttm_bo_man_takedown,
41146+ .get_node = ttm_bo_man_get_node,
41147+ .put_node = ttm_bo_man_put_node,
41148+ .debug = ttm_bo_man_debug
41149 };
41150 EXPORT_SYMBOL(ttm_bo_manager_func);
41151diff --git a/drivers/gpu/drm/ttm/ttm_memory.c b/drivers/gpu/drm/ttm/ttm_memory.c
41152index dbc2def..0a9f710 100644
41153--- a/drivers/gpu/drm/ttm/ttm_memory.c
41154+++ b/drivers/gpu/drm/ttm/ttm_memory.c
41155@@ -264,7 +264,7 @@ static int ttm_mem_init_kernel_zone(struct ttm_mem_global *glob,
41156 zone->glob = glob;
41157 glob->zone_kernel = zone;
41158 ret = kobject_init_and_add(
41159- &zone->kobj, &ttm_mem_zone_kobj_type, &glob->kobj, zone->name);
41160+ &zone->kobj, &ttm_mem_zone_kobj_type, &glob->kobj, "%s", zone->name);
41161 if (unlikely(ret != 0)) {
41162 kobject_put(&zone->kobj);
41163 return ret;
41164@@ -347,7 +347,7 @@ static int ttm_mem_init_dma32_zone(struct ttm_mem_global *glob,
41165 zone->glob = glob;
41166 glob->zone_dma32 = zone;
41167 ret = kobject_init_and_add(
41168- &zone->kobj, &ttm_mem_zone_kobj_type, &glob->kobj, zone->name);
41169+ &zone->kobj, &ttm_mem_zone_kobj_type, &glob->kobj, "%s", zone->name);
41170 if (unlikely(ret != 0)) {
41171 kobject_put(&zone->kobj);
41172 return ret;
41173diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
41174index 863bef9..cba15cf 100644
41175--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
41176+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
41177@@ -391,9 +391,9 @@ out:
41178 static unsigned long
41179 ttm_pool_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
41180 {
41181- static atomic_t start_pool = ATOMIC_INIT(0);
41182+ static atomic_unchecked_t start_pool = ATOMIC_INIT(0);
41183 unsigned i;
41184- unsigned pool_offset = atomic_add_return(1, &start_pool);
41185+ unsigned pool_offset = atomic_add_return_unchecked(1, &start_pool);
41186 struct ttm_page_pool *pool;
41187 int shrink_pages = sc->nr_to_scan;
41188 unsigned long freed = 0;
41189diff --git a/drivers/gpu/drm/udl/udl_fb.c b/drivers/gpu/drm/udl/udl_fb.c
41190index 3771763..883f206 100644
41191--- a/drivers/gpu/drm/udl/udl_fb.c
41192+++ b/drivers/gpu/drm/udl/udl_fb.c
41193@@ -367,7 +367,6 @@ static int udl_fb_release(struct fb_info *info, int user)
41194 fb_deferred_io_cleanup(info);
41195 kfree(info->fbdefio);
41196 info->fbdefio = NULL;
41197- info->fbops->fb_mmap = udl_fb_mmap;
41198 }
41199
41200 pr_warn("released /dev/fb%d user=%d count=%d\n",
41201diff --git a/drivers/gpu/drm/via/via_drv.h b/drivers/gpu/drm/via/via_drv.h
41202index ad02732..144f5ed 100644
41203--- a/drivers/gpu/drm/via/via_drv.h
41204+++ b/drivers/gpu/drm/via/via_drv.h
41205@@ -51,7 +51,7 @@ typedef struct drm_via_ring_buffer {
41206 typedef uint32_t maskarray_t[5];
41207
41208 typedef struct drm_via_irq {
41209- atomic_t irq_received;
41210+ atomic_unchecked_t irq_received;
41211 uint32_t pending_mask;
41212 uint32_t enable_mask;
41213 wait_queue_head_t irq_queue;
41214@@ -75,7 +75,7 @@ typedef struct drm_via_private {
41215 struct timeval last_vblank;
41216 int last_vblank_valid;
41217 unsigned usec_per_vblank;
41218- atomic_t vbl_received;
41219+ atomic_unchecked_t vbl_received;
41220 drm_via_state_t hc_state;
41221 char pci_buf[VIA_PCI_BUF_SIZE];
41222 const uint32_t *fire_offsets[VIA_FIRE_BUF_SIZE];
41223diff --git a/drivers/gpu/drm/via/via_irq.c b/drivers/gpu/drm/via/via_irq.c
41224index 1319433..a993b0c 100644
41225--- a/drivers/gpu/drm/via/via_irq.c
41226+++ b/drivers/gpu/drm/via/via_irq.c
41227@@ -101,7 +101,7 @@ u32 via_get_vblank_counter(struct drm_device *dev, int crtc)
41228 if (crtc != 0)
41229 return 0;
41230
41231- return atomic_read(&dev_priv->vbl_received);
41232+ return atomic_read_unchecked(&dev_priv->vbl_received);
41233 }
41234
41235 irqreturn_t via_driver_irq_handler(int irq, void *arg)
41236@@ -116,8 +116,8 @@ irqreturn_t via_driver_irq_handler(int irq, void *arg)
41237
41238 status = VIA_READ(VIA_REG_INTERRUPT);
41239 if (status & VIA_IRQ_VBLANK_PENDING) {
41240- atomic_inc(&dev_priv->vbl_received);
41241- if (!(atomic_read(&dev_priv->vbl_received) & 0x0F)) {
41242+ atomic_inc_unchecked(&dev_priv->vbl_received);
41243+ if (!(atomic_read_unchecked(&dev_priv->vbl_received) & 0x0F)) {
41244 do_gettimeofday(&cur_vblank);
41245 if (dev_priv->last_vblank_valid) {
41246 dev_priv->usec_per_vblank =
41247@@ -127,7 +127,7 @@ irqreturn_t via_driver_irq_handler(int irq, void *arg)
41248 dev_priv->last_vblank = cur_vblank;
41249 dev_priv->last_vblank_valid = 1;
41250 }
41251- if (!(atomic_read(&dev_priv->vbl_received) & 0xFF)) {
41252+ if (!(atomic_read_unchecked(&dev_priv->vbl_received) & 0xFF)) {
41253 DRM_DEBUG("US per vblank is: %u\n",
41254 dev_priv->usec_per_vblank);
41255 }
41256@@ -137,7 +137,7 @@ irqreturn_t via_driver_irq_handler(int irq, void *arg)
41257
41258 for (i = 0; i < dev_priv->num_irqs; ++i) {
41259 if (status & cur_irq->pending_mask) {
41260- atomic_inc(&cur_irq->irq_received);
41261+ atomic_inc_unchecked(&cur_irq->irq_received);
41262 wake_up(&cur_irq->irq_queue);
41263 handled = 1;
41264 if (dev_priv->irq_map[drm_via_irq_dma0_td] == i)
41265@@ -242,11 +242,11 @@ via_driver_irq_wait(struct drm_device *dev, unsigned int irq, int force_sequence
41266 DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * HZ,
41267 ((VIA_READ(masks[irq][2]) & masks[irq][3]) ==
41268 masks[irq][4]));
41269- cur_irq_sequence = atomic_read(&cur_irq->irq_received);
41270+ cur_irq_sequence = atomic_read_unchecked(&cur_irq->irq_received);
41271 } else {
41272 DRM_WAIT_ON(ret, cur_irq->irq_queue, 3 * HZ,
41273 (((cur_irq_sequence =
41274- atomic_read(&cur_irq->irq_received)) -
41275+ atomic_read_unchecked(&cur_irq->irq_received)) -
41276 *sequence) <= (1 << 23)));
41277 }
41278 *sequence = cur_irq_sequence;
41279@@ -284,7 +284,7 @@ void via_driver_irq_preinstall(struct drm_device *dev)
41280 }
41281
41282 for (i = 0; i < dev_priv->num_irqs; ++i) {
41283- atomic_set(&cur_irq->irq_received, 0);
41284+ atomic_set_unchecked(&cur_irq->irq_received, 0);
41285 cur_irq->enable_mask = dev_priv->irq_masks[i][0];
41286 cur_irq->pending_mask = dev_priv->irq_masks[i][1];
41287 init_waitqueue_head(&cur_irq->irq_queue);
41288@@ -366,7 +366,7 @@ int via_wait_irq(struct drm_device *dev, void *data, struct drm_file *file_priv)
41289 switch (irqwait->request.type & ~VIA_IRQ_FLAGS_MASK) {
41290 case VIA_IRQ_RELATIVE:
41291 irqwait->request.sequence +=
41292- atomic_read(&cur_irq->irq_received);
41293+ atomic_read_unchecked(&cur_irq->irq_received);
41294 irqwait->request.type &= ~_DRM_VBLANK_RELATIVE;
41295 case VIA_IRQ_ABSOLUTE:
41296 break;
41297diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
41298index 6b252a8..5975dfe 100644
41299--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
41300+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
41301@@ -437,7 +437,7 @@ struct vmw_private {
41302 * Fencing and IRQs.
41303 */
41304
41305- atomic_t marker_seq;
41306+ atomic_unchecked_t marker_seq;
41307 wait_queue_head_t fence_queue;
41308 wait_queue_head_t fifo_queue;
41309 int fence_queue_waiters; /* Protected by hw_mutex */
41310diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
41311index 6ccd993..618d592 100644
41312--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
41313+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fifo.c
41314@@ -154,7 +154,7 @@ int vmw_fifo_init(struct vmw_private *dev_priv, struct vmw_fifo_state *fifo)
41315 (unsigned int) min,
41316 (unsigned int) fifo->capabilities);
41317
41318- atomic_set(&dev_priv->marker_seq, dev_priv->last_read_seqno);
41319+ atomic_set_unchecked(&dev_priv->marker_seq, dev_priv->last_read_seqno);
41320 iowrite32(dev_priv->last_read_seqno, fifo_mem + SVGA_FIFO_FENCE);
41321 vmw_marker_queue_init(&fifo->marker_queue);
41322 return vmw_fifo_send_fence(dev_priv, &dummy);
41323@@ -372,7 +372,7 @@ void *vmw_fifo_reserve(struct vmw_private *dev_priv, uint32_t bytes)
41324 if (reserveable)
41325 iowrite32(bytes, fifo_mem +
41326 SVGA_FIFO_RESERVED);
41327- return fifo_mem + (next_cmd >> 2);
41328+ return (__le32 __force_kernel *)fifo_mem + (next_cmd >> 2);
41329 } else {
41330 need_bounce = true;
41331 }
41332@@ -492,7 +492,7 @@ int vmw_fifo_send_fence(struct vmw_private *dev_priv, uint32_t *seqno)
41333
41334 fm = vmw_fifo_reserve(dev_priv, bytes);
41335 if (unlikely(fm == NULL)) {
41336- *seqno = atomic_read(&dev_priv->marker_seq);
41337+ *seqno = atomic_read_unchecked(&dev_priv->marker_seq);
41338 ret = -ENOMEM;
41339 (void)vmw_fallback_wait(dev_priv, false, true, *seqno,
41340 false, 3*HZ);
41341@@ -500,7 +500,7 @@ int vmw_fifo_send_fence(struct vmw_private *dev_priv, uint32_t *seqno)
41342 }
41343
41344 do {
41345- *seqno = atomic_add_return(1, &dev_priv->marker_seq);
41346+ *seqno = atomic_add_return_unchecked(1, &dev_priv->marker_seq);
41347 } while (*seqno == 0);
41348
41349 if (!(fifo_state->capabilities & SVGA_FIFO_CAP_FENCE)) {
41350diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
41351index b1273e8..9c274fd 100644
41352--- a/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
41353+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_gmrid_manager.c
41354@@ -164,9 +164,9 @@ static void vmw_gmrid_man_debug(struct ttm_mem_type_manager *man,
41355 }
41356
41357 const struct ttm_mem_type_manager_func vmw_gmrid_manager_func = {
41358- vmw_gmrid_man_init,
41359- vmw_gmrid_man_takedown,
41360- vmw_gmrid_man_get_node,
41361- vmw_gmrid_man_put_node,
41362- vmw_gmrid_man_debug
41363+ .init = vmw_gmrid_man_init,
41364+ .takedown = vmw_gmrid_man_takedown,
41365+ .get_node = vmw_gmrid_man_get_node,
41366+ .put_node = vmw_gmrid_man_put_node,
41367+ .debug = vmw_gmrid_man_debug
41368 };
41369diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
41370index 37881ec..319065d 100644
41371--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
41372+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
41373@@ -235,7 +235,7 @@ int vmw_present_ioctl(struct drm_device *dev, void *data,
41374 int ret;
41375
41376 num_clips = arg->num_clips;
41377- clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
41378+ clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
41379
41380 if (unlikely(num_clips == 0))
41381 return 0;
41382@@ -318,7 +318,7 @@ int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
41383 int ret;
41384
41385 num_clips = arg->num_clips;
41386- clips_ptr = (struct drm_vmw_rect *)(unsigned long)arg->clips_ptr;
41387+ clips_ptr = (struct drm_vmw_rect __user *)(unsigned long)arg->clips_ptr;
41388
41389 if (unlikely(num_clips == 0))
41390 return 0;
41391diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
41392index 0c42376..6febe77 100644
41393--- a/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
41394+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
41395@@ -107,7 +107,7 @@ bool vmw_seqno_passed(struct vmw_private *dev_priv,
41396 * emitted. Then the fence is stale and signaled.
41397 */
41398
41399- ret = ((atomic_read(&dev_priv->marker_seq) - seqno)
41400+ ret = ((atomic_read_unchecked(&dev_priv->marker_seq) - seqno)
41401 > VMW_FENCE_WRAP);
41402
41403 return ret;
41404@@ -138,7 +138,7 @@ int vmw_fallback_wait(struct vmw_private *dev_priv,
41405
41406 if (fifo_idle)
41407 down_read(&fifo_state->rwsem);
41408- signal_seq = atomic_read(&dev_priv->marker_seq);
41409+ signal_seq = atomic_read_unchecked(&dev_priv->marker_seq);
41410 ret = 0;
41411
41412 for (;;) {
41413diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c b/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c
41414index 8a8725c2..afed796 100644
41415--- a/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c
41416+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_marker.c
41417@@ -151,7 +151,7 @@ int vmw_wait_lag(struct vmw_private *dev_priv,
41418 while (!vmw_lag_lt(queue, us)) {
41419 spin_lock(&queue->lock);
41420 if (list_empty(&queue->head))
41421- seqno = atomic_read(&dev_priv->marker_seq);
41422+ seqno = atomic_read_unchecked(&dev_priv->marker_seq);
41423 else {
41424 marker = list_first_entry(&queue->head,
41425 struct vmw_marker, head);
41426diff --git a/drivers/gpu/vga/vga_switcheroo.c b/drivers/gpu/vga/vga_switcheroo.c
41427index ec0ae2d..dc0780b 100644
41428--- a/drivers/gpu/vga/vga_switcheroo.c
41429+++ b/drivers/gpu/vga/vga_switcheroo.c
41430@@ -643,7 +643,7 @@ static int vga_switcheroo_runtime_resume(struct device *dev)
41431
41432 /* this version is for the case where the power switch is separate
41433 to the device being powered down. */
41434-int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain)
41435+int vga_switcheroo_init_domain_pm_ops(struct device *dev, dev_pm_domain_no_const *domain)
41436 {
41437 /* copy over all the bus versions */
41438 if (dev->bus && dev->bus->pm) {
41439@@ -688,7 +688,7 @@ static int vga_switcheroo_runtime_resume_hdmi_audio(struct device *dev)
41440 return ret;
41441 }
41442
41443-int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain)
41444+int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, dev_pm_domain_no_const *domain)
41445 {
41446 /* copy over all the bus versions */
41447 if (dev->bus && dev->bus->pm) {
41448diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
41449index a5c7927..025a2b4 100644
41450--- a/drivers/hid/hid-core.c
41451+++ b/drivers/hid/hid-core.c
41452@@ -2476,7 +2476,7 @@ EXPORT_SYMBOL_GPL(hid_ignore);
41453
41454 int hid_add_device(struct hid_device *hdev)
41455 {
41456- static atomic_t id = ATOMIC_INIT(0);
41457+ static atomic_unchecked_t id = ATOMIC_INIT(0);
41458 int ret;
41459
41460 if (WARN_ON(hdev->status & HID_STAT_ADDED))
41461@@ -2518,7 +2518,7 @@ int hid_add_device(struct hid_device *hdev)
41462 /* XXX hack, any other cleaner solution after the driver core
41463 * is converted to allow more than 20 bytes as the device name? */
41464 dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
41465- hdev->vendor, hdev->product, atomic_inc_return(&id));
41466+ hdev->vendor, hdev->product, atomic_inc_return_unchecked(&id));
41467
41468 hid_debug_register(hdev, dev_name(&hdev->dev));
41469 ret = device_add(&hdev->dev);
41470diff --git a/drivers/hid/hid-wiimote-debug.c b/drivers/hid/hid-wiimote-debug.c
41471index c13fb5b..55a3802 100644
41472--- a/drivers/hid/hid-wiimote-debug.c
41473+++ b/drivers/hid/hid-wiimote-debug.c
41474@@ -66,7 +66,7 @@ static ssize_t wiidebug_eeprom_read(struct file *f, char __user *u, size_t s,
41475 else if (size == 0)
41476 return -EIO;
41477
41478- if (copy_to_user(u, buf, size))
41479+ if (size > sizeof(buf) || copy_to_user(u, buf, size))
41480 return -EFAULT;
41481
41482 *off += size;
41483diff --git a/drivers/hid/uhid.c b/drivers/hid/uhid.c
41484index 0d078c3..cd0962c 100644
41485--- a/drivers/hid/uhid.c
41486+++ b/drivers/hid/uhid.c
41487@@ -47,7 +47,7 @@ struct uhid_device {
41488 struct mutex report_lock;
41489 wait_queue_head_t report_wait;
41490 atomic_t report_done;
41491- atomic_t report_id;
41492+ atomic_unchecked_t report_id;
41493 struct uhid_event report_buf;
41494 };
41495
41496@@ -163,7 +163,7 @@ static int uhid_hid_get_raw(struct hid_device *hid, unsigned char rnum,
41497
41498 spin_lock_irqsave(&uhid->qlock, flags);
41499 ev->type = UHID_FEATURE;
41500- ev->u.feature.id = atomic_inc_return(&uhid->report_id);
41501+ ev->u.feature.id = atomic_inc_return_unchecked(&uhid->report_id);
41502 ev->u.feature.rnum = rnum;
41503 ev->u.feature.rtype = report_type;
41504
41505@@ -539,7 +539,7 @@ static int uhid_dev_feature_answer(struct uhid_device *uhid,
41506 spin_lock_irqsave(&uhid->qlock, flags);
41507
41508 /* id for old report; drop it silently */
41509- if (atomic_read(&uhid->report_id) != ev->u.feature_answer.id)
41510+ if (atomic_read_unchecked(&uhid->report_id) != ev->u.feature_answer.id)
41511 goto unlock;
41512 if (atomic_read(&uhid->report_done))
41513 goto unlock;
41514diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
41515index 602ca86..10a6573 100644
41516--- a/drivers/hv/channel.c
41517+++ b/drivers/hv/channel.c
41518@@ -365,8 +365,8 @@ int vmbus_establish_gpadl(struct vmbus_channel *channel, void *kbuffer,
41519 int ret = 0;
41520 int t;
41521
41522- next_gpadl_handle = atomic_read(&vmbus_connection.next_gpadl_handle);
41523- atomic_inc(&vmbus_connection.next_gpadl_handle);
41524+ next_gpadl_handle = atomic_read_unchecked(&vmbus_connection.next_gpadl_handle);
41525+ atomic_inc_unchecked(&vmbus_connection.next_gpadl_handle);
41526
41527 ret = create_gpadl_header(kbuffer, size, &msginfo, &msgcount);
41528 if (ret)
41529diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
41530index bcb4950..61dba6c 100644
41531--- a/drivers/hv/hv.c
41532+++ b/drivers/hv/hv.c
41533@@ -112,7 +112,7 @@ static u64 do_hypercall(u64 control, void *input, void *output)
41534 u64 output_address = (output) ? virt_to_phys(output) : 0;
41535 u32 output_address_hi = output_address >> 32;
41536 u32 output_address_lo = output_address & 0xFFFFFFFF;
41537- void *hypercall_page = hv_context.hypercall_page;
41538+ void *hypercall_page = ktva_ktla(hv_context.hypercall_page);
41539
41540 __asm__ __volatile__ ("call *%8" : "=d"(hv_status_hi),
41541 "=a"(hv_status_lo) : "d" (control_hi),
41542@@ -154,7 +154,7 @@ int hv_init(void)
41543 /* See if the hypercall page is already set */
41544 rdmsrl(HV_X64_MSR_HYPERCALL, hypercall_msr.as_uint64);
41545
41546- virtaddr = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL_EXEC);
41547+ virtaddr = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL_RX);
41548
41549 if (!virtaddr)
41550 goto cleanup;
41551diff --git a/drivers/hv/hv_balloon.c b/drivers/hv/hv_balloon.c
41552index 5e90c5d..d8fcefb 100644
41553--- a/drivers/hv/hv_balloon.c
41554+++ b/drivers/hv/hv_balloon.c
41555@@ -470,7 +470,7 @@ MODULE_PARM_DESC(hot_add, "If set attempt memory hot_add");
41556
41557 module_param(pressure_report_delay, uint, (S_IRUGO | S_IWUSR));
41558 MODULE_PARM_DESC(pressure_report_delay, "Delay in secs in reporting pressure");
41559-static atomic_t trans_id = ATOMIC_INIT(0);
41560+static atomic_unchecked_t trans_id = ATOMIC_INIT(0);
41561
41562 static int dm_ring_size = (5 * PAGE_SIZE);
41563
41564@@ -893,7 +893,7 @@ static void hot_add_req(struct work_struct *dummy)
41565 pr_info("Memory hot add failed\n");
41566
41567 dm->state = DM_INITIALIZED;
41568- resp.hdr.trans_id = atomic_inc_return(&trans_id);
41569+ resp.hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
41570 vmbus_sendpacket(dm->dev->channel, &resp,
41571 sizeof(struct dm_hot_add_response),
41572 (unsigned long)NULL,
41573@@ -973,7 +973,7 @@ static void post_status(struct hv_dynmem_device *dm)
41574 memset(&status, 0, sizeof(struct dm_status));
41575 status.hdr.type = DM_STATUS_REPORT;
41576 status.hdr.size = sizeof(struct dm_status);
41577- status.hdr.trans_id = atomic_inc_return(&trans_id);
41578+ status.hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
41579
41580 /*
41581 * The host expects the guest to report free memory.
41582@@ -993,7 +993,7 @@ static void post_status(struct hv_dynmem_device *dm)
41583 * send the status. This can happen if we were interrupted
41584 * after we picked our transaction ID.
41585 */
41586- if (status.hdr.trans_id != atomic_read(&trans_id))
41587+ if (status.hdr.trans_id != atomic_read_unchecked(&trans_id))
41588 return;
41589
41590 /*
41591@@ -1129,7 +1129,7 @@ static void balloon_up(struct work_struct *dummy)
41592 */
41593
41594 do {
41595- bl_resp->hdr.trans_id = atomic_inc_return(&trans_id);
41596+ bl_resp->hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
41597 ret = vmbus_sendpacket(dm_device.dev->channel,
41598 bl_resp,
41599 bl_resp->hdr.size,
41600@@ -1175,7 +1175,7 @@ static void balloon_down(struct hv_dynmem_device *dm,
41601
41602 memset(&resp, 0, sizeof(struct dm_unballoon_response));
41603 resp.hdr.type = DM_UNBALLOON_RESPONSE;
41604- resp.hdr.trans_id = atomic_inc_return(&trans_id);
41605+ resp.hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
41606 resp.hdr.size = sizeof(struct dm_unballoon_response);
41607
41608 vmbus_sendpacket(dm_device.dev->channel, &resp,
41609@@ -1239,7 +1239,7 @@ static void version_resp(struct hv_dynmem_device *dm,
41610 memset(&version_req, 0, sizeof(struct dm_version_request));
41611 version_req.hdr.type = DM_VERSION_REQUEST;
41612 version_req.hdr.size = sizeof(struct dm_version_request);
41613- version_req.hdr.trans_id = atomic_inc_return(&trans_id);
41614+ version_req.hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
41615 version_req.version.version = DYNMEM_PROTOCOL_VERSION_WIN7;
41616 version_req.is_last_attempt = 1;
41617
41618@@ -1409,7 +1409,7 @@ static int balloon_probe(struct hv_device *dev,
41619 memset(&version_req, 0, sizeof(struct dm_version_request));
41620 version_req.hdr.type = DM_VERSION_REQUEST;
41621 version_req.hdr.size = sizeof(struct dm_version_request);
41622- version_req.hdr.trans_id = atomic_inc_return(&trans_id);
41623+ version_req.hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
41624 version_req.version.version = DYNMEM_PROTOCOL_VERSION_WIN8;
41625 version_req.is_last_attempt = 0;
41626
41627@@ -1440,7 +1440,7 @@ static int balloon_probe(struct hv_device *dev,
41628 memset(&cap_msg, 0, sizeof(struct dm_capabilities));
41629 cap_msg.hdr.type = DM_CAPABILITIES_REPORT;
41630 cap_msg.hdr.size = sizeof(struct dm_capabilities);
41631- cap_msg.hdr.trans_id = atomic_inc_return(&trans_id);
41632+ cap_msg.hdr.trans_id = atomic_inc_return_unchecked(&trans_id);
41633
41634 cap_msg.caps.cap_bits.balloon = 1;
41635 cap_msg.caps.cap_bits.hot_add = 1;
41636diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
41637index 860134d..ea3a79a 100644
41638--- a/drivers/hv/hyperv_vmbus.h
41639+++ b/drivers/hv/hyperv_vmbus.h
41640@@ -602,7 +602,7 @@ enum vmbus_connect_state {
41641 struct vmbus_connection {
41642 enum vmbus_connect_state conn_state;
41643
41644- atomic_t next_gpadl_handle;
41645+ atomic_unchecked_t next_gpadl_handle;
41646
41647 /*
41648 * Represents channel interrupts. Each bit position represents a
41649diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
41650index 8e53a3c..7a64e44 100644
41651--- a/drivers/hv/vmbus_drv.c
41652+++ b/drivers/hv/vmbus_drv.c
41653@@ -807,10 +807,10 @@ int vmbus_device_register(struct hv_device *child_device_obj)
41654 {
41655 int ret = 0;
41656
41657- static atomic_t device_num = ATOMIC_INIT(0);
41658+ static atomic_unchecked_t device_num = ATOMIC_INIT(0);
41659
41660 dev_set_name(&child_device_obj->device, "vmbus_0_%d",
41661- atomic_inc_return(&device_num));
41662+ atomic_inc_return_unchecked(&device_num));
41663
41664 child_device_obj->device.bus = &hv_bus;
41665 child_device_obj->device.parent = &hv_acpi_dev->dev;
41666diff --git a/drivers/hwmon/acpi_power_meter.c b/drivers/hwmon/acpi_power_meter.c
41667index 579bdf9..75118b5 100644
41668--- a/drivers/hwmon/acpi_power_meter.c
41669+++ b/drivers/hwmon/acpi_power_meter.c
41670@@ -116,7 +116,7 @@ struct sensor_template {
41671 struct device_attribute *devattr,
41672 const char *buf, size_t count);
41673 int index;
41674-};
41675+} __do_const;
41676
41677 /* Averaging interval */
41678 static int update_avg_interval(struct acpi_power_meter_resource *resource)
41679@@ -631,7 +631,7 @@ static int register_attrs(struct acpi_power_meter_resource *resource,
41680 struct sensor_template *attrs)
41681 {
41682 struct device *dev = &resource->acpi_dev->dev;
41683- struct sensor_device_attribute *sensors =
41684+ sensor_device_attribute_no_const *sensors =
41685 &resource->sensors[resource->num_sensors];
41686 int res = 0;
41687
41688diff --git a/drivers/hwmon/applesmc.c b/drivers/hwmon/applesmc.c
41689index 3288f13..71cfb4e 100644
41690--- a/drivers/hwmon/applesmc.c
41691+++ b/drivers/hwmon/applesmc.c
41692@@ -1106,7 +1106,7 @@ static int applesmc_create_nodes(struct applesmc_node_group *groups, int num)
41693 {
41694 struct applesmc_node_group *grp;
41695 struct applesmc_dev_attr *node;
41696- struct attribute *attr;
41697+ attribute_no_const *attr;
41698 int ret, i;
41699
41700 for (grp = groups; grp->format; grp++) {
41701diff --git a/drivers/hwmon/asus_atk0110.c b/drivers/hwmon/asus_atk0110.c
41702index ae208f6..48b6c5b 100644
41703--- a/drivers/hwmon/asus_atk0110.c
41704+++ b/drivers/hwmon/asus_atk0110.c
41705@@ -147,10 +147,10 @@ MODULE_DEVICE_TABLE(acpi, atk_ids);
41706 struct atk_sensor_data {
41707 struct list_head list;
41708 struct atk_data *data;
41709- struct device_attribute label_attr;
41710- struct device_attribute input_attr;
41711- struct device_attribute limit1_attr;
41712- struct device_attribute limit2_attr;
41713+ device_attribute_no_const label_attr;
41714+ device_attribute_no_const input_attr;
41715+ device_attribute_no_const limit1_attr;
41716+ device_attribute_no_const limit2_attr;
41717 char label_attr_name[ATTR_NAME_SIZE];
41718 char input_attr_name[ATTR_NAME_SIZE];
41719 char limit1_attr_name[ATTR_NAME_SIZE];
41720@@ -270,7 +270,7 @@ static ssize_t atk_name_show(struct device *dev,
41721 static struct device_attribute atk_name_attr =
41722 __ATTR(name, 0444, atk_name_show, NULL);
41723
41724-static void atk_init_attribute(struct device_attribute *attr, char *name,
41725+static void atk_init_attribute(device_attribute_no_const *attr, char *name,
41726 sysfs_show_func show)
41727 {
41728 sysfs_attr_init(&attr->attr);
41729diff --git a/drivers/hwmon/coretemp.c b/drivers/hwmon/coretemp.c
41730index d76f0b7..55ae976 100644
41731--- a/drivers/hwmon/coretemp.c
41732+++ b/drivers/hwmon/coretemp.c
41733@@ -784,7 +784,7 @@ static int coretemp_cpu_callback(struct notifier_block *nfb,
41734 return NOTIFY_OK;
41735 }
41736
41737-static struct notifier_block coretemp_cpu_notifier __refdata = {
41738+static struct notifier_block coretemp_cpu_notifier = {
41739 .notifier_call = coretemp_cpu_callback,
41740 };
41741
41742diff --git a/drivers/hwmon/ibmaem.c b/drivers/hwmon/ibmaem.c
41743index 632f1dc..57e6a58 100644
41744--- a/drivers/hwmon/ibmaem.c
41745+++ b/drivers/hwmon/ibmaem.c
41746@@ -926,7 +926,7 @@ static int aem_register_sensors(struct aem_data *data,
41747 struct aem_rw_sensor_template *rw)
41748 {
41749 struct device *dev = &data->pdev->dev;
41750- struct sensor_device_attribute *sensors = data->sensors;
41751+ sensor_device_attribute_no_const *sensors = data->sensors;
41752 int err;
41753
41754 /* Set up read-only sensors */
41755diff --git a/drivers/hwmon/iio_hwmon.c b/drivers/hwmon/iio_hwmon.c
41756index 9fbb1b1..efbaa3e 100644
41757--- a/drivers/hwmon/iio_hwmon.c
41758+++ b/drivers/hwmon/iio_hwmon.c
41759@@ -61,7 +61,7 @@ static int iio_hwmon_probe(struct platform_device *pdev)
41760 {
41761 struct device *dev = &pdev->dev;
41762 struct iio_hwmon_state *st;
41763- struct sensor_device_attribute *a;
41764+ sensor_device_attribute_no_const *a;
41765 int ret, i;
41766 int in_i = 1, temp_i = 1, curr_i = 1;
41767 enum iio_chan_type type;
41768diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c
41769index 38d5a63..cf2c2ea 100644
41770--- a/drivers/hwmon/nct6775.c
41771+++ b/drivers/hwmon/nct6775.c
41772@@ -944,10 +944,10 @@ static struct attribute_group *
41773 nct6775_create_attr_group(struct device *dev, struct sensor_template_group *tg,
41774 int repeat)
41775 {
41776- struct attribute_group *group;
41777+ attribute_group_no_const *group;
41778 struct sensor_device_attr_u *su;
41779- struct sensor_device_attribute *a;
41780- struct sensor_device_attribute_2 *a2;
41781+ sensor_device_attribute_no_const *a;
41782+ sensor_device_attribute_2_no_const *a2;
41783 struct attribute **attrs;
41784 struct sensor_device_template **t;
41785 int i, count;
41786diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
41787index 291d11f..3f0dbbd 100644
41788--- a/drivers/hwmon/pmbus/pmbus_core.c
41789+++ b/drivers/hwmon/pmbus/pmbus_core.c
41790@@ -783,7 +783,7 @@ static int pmbus_add_attribute(struct pmbus_data *data, struct attribute *attr)
41791 return 0;
41792 }
41793
41794-static void pmbus_dev_attr_init(struct device_attribute *dev_attr,
41795+static void pmbus_dev_attr_init(device_attribute_no_const *dev_attr,
41796 const char *name,
41797 umode_t mode,
41798 ssize_t (*show)(struct device *dev,
41799@@ -800,7 +800,7 @@ static void pmbus_dev_attr_init(struct device_attribute *dev_attr,
41800 dev_attr->store = store;
41801 }
41802
41803-static void pmbus_attr_init(struct sensor_device_attribute *a,
41804+static void pmbus_attr_init(sensor_device_attribute_no_const *a,
41805 const char *name,
41806 umode_t mode,
41807 ssize_t (*show)(struct device *dev,
41808@@ -822,7 +822,7 @@ static int pmbus_add_boolean(struct pmbus_data *data,
41809 u16 reg, u8 mask)
41810 {
41811 struct pmbus_boolean *boolean;
41812- struct sensor_device_attribute *a;
41813+ sensor_device_attribute_no_const *a;
41814
41815 boolean = devm_kzalloc(data->dev, sizeof(*boolean), GFP_KERNEL);
41816 if (!boolean)
41817@@ -847,7 +847,7 @@ static struct pmbus_sensor *pmbus_add_sensor(struct pmbus_data *data,
41818 bool update, bool readonly)
41819 {
41820 struct pmbus_sensor *sensor;
41821- struct device_attribute *a;
41822+ device_attribute_no_const *a;
41823
41824 sensor = devm_kzalloc(data->dev, sizeof(*sensor), GFP_KERNEL);
41825 if (!sensor)
41826@@ -878,7 +878,7 @@ static int pmbus_add_label(struct pmbus_data *data,
41827 const char *lstring, int index)
41828 {
41829 struct pmbus_label *label;
41830- struct device_attribute *a;
41831+ device_attribute_no_const *a;
41832
41833 label = devm_kzalloc(data->dev, sizeof(*label), GFP_KERNEL);
41834 if (!label)
41835diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c
41836index 97cd45a..ac54d8b 100644
41837--- a/drivers/hwmon/sht15.c
41838+++ b/drivers/hwmon/sht15.c
41839@@ -169,7 +169,7 @@ struct sht15_data {
41840 int supply_uv;
41841 bool supply_uv_valid;
41842 struct work_struct update_supply_work;
41843- atomic_t interrupt_handled;
41844+ atomic_unchecked_t interrupt_handled;
41845 };
41846
41847 /**
41848@@ -542,13 +542,13 @@ static int sht15_measurement(struct sht15_data *data,
41849 ret = gpio_direction_input(data->pdata->gpio_data);
41850 if (ret)
41851 return ret;
41852- atomic_set(&data->interrupt_handled, 0);
41853+ atomic_set_unchecked(&data->interrupt_handled, 0);
41854
41855 enable_irq(gpio_to_irq(data->pdata->gpio_data));
41856 if (gpio_get_value(data->pdata->gpio_data) == 0) {
41857 disable_irq_nosync(gpio_to_irq(data->pdata->gpio_data));
41858 /* Only relevant if the interrupt hasn't occurred. */
41859- if (!atomic_read(&data->interrupt_handled))
41860+ if (!atomic_read_unchecked(&data->interrupt_handled))
41861 schedule_work(&data->read_work);
41862 }
41863 ret = wait_event_timeout(data->wait_queue,
41864@@ -820,7 +820,7 @@ static irqreturn_t sht15_interrupt_fired(int irq, void *d)
41865
41866 /* First disable the interrupt */
41867 disable_irq_nosync(irq);
41868- atomic_inc(&data->interrupt_handled);
41869+ atomic_inc_unchecked(&data->interrupt_handled);
41870 /* Then schedule a reading work struct */
41871 if (data->state != SHT15_READING_NOTHING)
41872 schedule_work(&data->read_work);
41873@@ -842,11 +842,11 @@ static void sht15_bh_read_data(struct work_struct *work_s)
41874 * If not, then start the interrupt again - care here as could
41875 * have gone low in meantime so verify it hasn't!
41876 */
41877- atomic_set(&data->interrupt_handled, 0);
41878+ atomic_set_unchecked(&data->interrupt_handled, 0);
41879 enable_irq(gpio_to_irq(data->pdata->gpio_data));
41880 /* If still not occurred or another handler was scheduled */
41881 if (gpio_get_value(data->pdata->gpio_data)
41882- || atomic_read(&data->interrupt_handled))
41883+ || atomic_read_unchecked(&data->interrupt_handled))
41884 return;
41885 }
41886
41887diff --git a/drivers/hwmon/via-cputemp.c b/drivers/hwmon/via-cputemp.c
41888index 8df43c5..b07b91d 100644
41889--- a/drivers/hwmon/via-cputemp.c
41890+++ b/drivers/hwmon/via-cputemp.c
41891@@ -296,7 +296,7 @@ static int via_cputemp_cpu_callback(struct notifier_block *nfb,
41892 return NOTIFY_OK;
41893 }
41894
41895-static struct notifier_block via_cputemp_cpu_notifier __refdata = {
41896+static struct notifier_block via_cputemp_cpu_notifier = {
41897 .notifier_call = via_cputemp_cpu_callback,
41898 };
41899
41900diff --git a/drivers/i2c/busses/i2c-amd756-s4882.c b/drivers/i2c/busses/i2c-amd756-s4882.c
41901index 41fc683..a39cfea 100644
41902--- a/drivers/i2c/busses/i2c-amd756-s4882.c
41903+++ b/drivers/i2c/busses/i2c-amd756-s4882.c
41904@@ -43,7 +43,7 @@
41905 extern struct i2c_adapter amd756_smbus;
41906
41907 static struct i2c_adapter *s4882_adapter;
41908-static struct i2c_algorithm *s4882_algo;
41909+static i2c_algorithm_no_const *s4882_algo;
41910
41911 /* Wrapper access functions for multiplexed SMBus */
41912 static DEFINE_MUTEX(amd756_lock);
41913diff --git a/drivers/i2c/busses/i2c-diolan-u2c.c b/drivers/i2c/busses/i2c-diolan-u2c.c
41914index 721f7eb..0fd2a09 100644
41915--- a/drivers/i2c/busses/i2c-diolan-u2c.c
41916+++ b/drivers/i2c/busses/i2c-diolan-u2c.c
41917@@ -98,7 +98,7 @@ MODULE_PARM_DESC(frequency, "I2C clock frequency in hertz");
41918 /* usb layer */
41919
41920 /* Send command to device, and get response. */
41921-static int diolan_usb_transfer(struct i2c_diolan_u2c *dev)
41922+static int __intentional_overflow(-1) diolan_usb_transfer(struct i2c_diolan_u2c *dev)
41923 {
41924 int ret = 0;
41925 int actual;
41926diff --git a/drivers/i2c/busses/i2c-nforce2-s4985.c b/drivers/i2c/busses/i2c-nforce2-s4985.c
41927index b170bdf..3c76427 100644
41928--- a/drivers/i2c/busses/i2c-nforce2-s4985.c
41929+++ b/drivers/i2c/busses/i2c-nforce2-s4985.c
41930@@ -41,7 +41,7 @@
41931 extern struct i2c_adapter *nforce2_smbus;
41932
41933 static struct i2c_adapter *s4985_adapter;
41934-static struct i2c_algorithm *s4985_algo;
41935+static i2c_algorithm_no_const *s4985_algo;
41936
41937 /* Wrapper access functions for multiplexed SMBus */
41938 static DEFINE_MUTEX(nforce2_lock);
41939diff --git a/drivers/i2c/i2c-dev.c b/drivers/i2c/i2c-dev.c
41940index 80b47e8..1a6040d9 100644
41941--- a/drivers/i2c/i2c-dev.c
41942+++ b/drivers/i2c/i2c-dev.c
41943@@ -277,7 +277,7 @@ static noinline int i2cdev_ioctl_rdrw(struct i2c_client *client,
41944 break;
41945 }
41946
41947- data_ptrs[i] = (u8 __user *)rdwr_pa[i].buf;
41948+ data_ptrs[i] = (u8 __force_user *)rdwr_pa[i].buf;
41949 rdwr_pa[i].buf = memdup_user(data_ptrs[i], rdwr_pa[i].len);
41950 if (IS_ERR(rdwr_pa[i].buf)) {
41951 res = PTR_ERR(rdwr_pa[i].buf);
41952diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
41953index 0b510ba..4fbb5085 100644
41954--- a/drivers/ide/ide-cd.c
41955+++ b/drivers/ide/ide-cd.c
41956@@ -768,7 +768,7 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
41957 alignment = queue_dma_alignment(q) | q->dma_pad_mask;
41958 if ((unsigned long)buf & alignment
41959 || blk_rq_bytes(rq) & q->dma_pad_mask
41960- || object_is_on_stack(buf))
41961+ || object_starts_on_stack(buf))
41962 drive->dma = 0;
41963 }
41964 }
41965diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
41966index ede16aec..e423e8a 100644
41967--- a/drivers/iio/industrialio-core.c
41968+++ b/drivers/iio/industrialio-core.c
41969@@ -527,7 +527,7 @@ static ssize_t iio_write_channel_info(struct device *dev,
41970 }
41971
41972 static
41973-int __iio_device_attr_init(struct device_attribute *dev_attr,
41974+int __iio_device_attr_init(device_attribute_no_const *dev_attr,
41975 const char *postfix,
41976 struct iio_chan_spec const *chan,
41977 ssize_t (*readfunc)(struct device *dev,
41978diff --git a/drivers/infiniband/core/cm.c b/drivers/infiniband/core/cm.c
41979index c323917..6ddea8b 100644
41980--- a/drivers/infiniband/core/cm.c
41981+++ b/drivers/infiniband/core/cm.c
41982@@ -115,7 +115,7 @@ static char const counter_group_names[CM_COUNTER_GROUPS]
41983
41984 struct cm_counter_group {
41985 struct kobject obj;
41986- atomic_long_t counter[CM_ATTR_COUNT];
41987+ atomic_long_unchecked_t counter[CM_ATTR_COUNT];
41988 };
41989
41990 struct cm_counter_attribute {
41991@@ -1398,7 +1398,7 @@ static void cm_dup_req_handler(struct cm_work *work,
41992 struct ib_mad_send_buf *msg = NULL;
41993 int ret;
41994
41995- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
41996+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
41997 counter[CM_REQ_COUNTER]);
41998
41999 /* Quick state check to discard duplicate REQs. */
42000@@ -1785,7 +1785,7 @@ static void cm_dup_rep_handler(struct cm_work *work)
42001 if (!cm_id_priv)
42002 return;
42003
42004- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
42005+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
42006 counter[CM_REP_COUNTER]);
42007 ret = cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg);
42008 if (ret)
42009@@ -1952,7 +1952,7 @@ static int cm_rtu_handler(struct cm_work *work)
42010 if (cm_id_priv->id.state != IB_CM_REP_SENT &&
42011 cm_id_priv->id.state != IB_CM_MRA_REP_RCVD) {
42012 spin_unlock_irq(&cm_id_priv->lock);
42013- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
42014+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
42015 counter[CM_RTU_COUNTER]);
42016 goto out;
42017 }
42018@@ -2135,7 +2135,7 @@ static int cm_dreq_handler(struct cm_work *work)
42019 cm_id_priv = cm_acquire_id(dreq_msg->remote_comm_id,
42020 dreq_msg->local_comm_id);
42021 if (!cm_id_priv) {
42022- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
42023+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
42024 counter[CM_DREQ_COUNTER]);
42025 cm_issue_drep(work->port, work->mad_recv_wc);
42026 return -EINVAL;
42027@@ -2160,7 +2160,7 @@ static int cm_dreq_handler(struct cm_work *work)
42028 case IB_CM_MRA_REP_RCVD:
42029 break;
42030 case IB_CM_TIMEWAIT:
42031- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
42032+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
42033 counter[CM_DREQ_COUNTER]);
42034 if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg))
42035 goto unlock;
42036@@ -2174,7 +2174,7 @@ static int cm_dreq_handler(struct cm_work *work)
42037 cm_free_msg(msg);
42038 goto deref;
42039 case IB_CM_DREQ_RCVD:
42040- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
42041+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
42042 counter[CM_DREQ_COUNTER]);
42043 goto unlock;
42044 default:
42045@@ -2541,7 +2541,7 @@ static int cm_mra_handler(struct cm_work *work)
42046 ib_modify_mad(cm_id_priv->av.port->mad_agent,
42047 cm_id_priv->msg, timeout)) {
42048 if (cm_id_priv->id.lap_state == IB_CM_MRA_LAP_RCVD)
42049- atomic_long_inc(&work->port->
42050+ atomic_long_inc_unchecked(&work->port->
42051 counter_group[CM_RECV_DUPLICATES].
42052 counter[CM_MRA_COUNTER]);
42053 goto out;
42054@@ -2550,7 +2550,7 @@ static int cm_mra_handler(struct cm_work *work)
42055 break;
42056 case IB_CM_MRA_REQ_RCVD:
42057 case IB_CM_MRA_REP_RCVD:
42058- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
42059+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
42060 counter[CM_MRA_COUNTER]);
42061 /* fall through */
42062 default:
42063@@ -2712,7 +2712,7 @@ static int cm_lap_handler(struct cm_work *work)
42064 case IB_CM_LAP_IDLE:
42065 break;
42066 case IB_CM_MRA_LAP_SENT:
42067- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
42068+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
42069 counter[CM_LAP_COUNTER]);
42070 if (cm_alloc_response_msg(work->port, work->mad_recv_wc, &msg))
42071 goto unlock;
42072@@ -2728,7 +2728,7 @@ static int cm_lap_handler(struct cm_work *work)
42073 cm_free_msg(msg);
42074 goto deref;
42075 case IB_CM_LAP_RCVD:
42076- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
42077+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
42078 counter[CM_LAP_COUNTER]);
42079 goto unlock;
42080 default:
42081@@ -3012,7 +3012,7 @@ static int cm_sidr_req_handler(struct cm_work *work)
42082 cur_cm_id_priv = cm_insert_remote_sidr(cm_id_priv);
42083 if (cur_cm_id_priv) {
42084 spin_unlock_irq(&cm.lock);
42085- atomic_long_inc(&work->port->counter_group[CM_RECV_DUPLICATES].
42086+ atomic_long_inc_unchecked(&work->port->counter_group[CM_RECV_DUPLICATES].
42087 counter[CM_SIDR_REQ_COUNTER]);
42088 goto out; /* Duplicate message. */
42089 }
42090@@ -3224,10 +3224,10 @@ static void cm_send_handler(struct ib_mad_agent *mad_agent,
42091 if (!msg->context[0] && (attr_index != CM_REJ_COUNTER))
42092 msg->retries = 1;
42093
42094- atomic_long_add(1 + msg->retries,
42095+ atomic_long_add_unchecked(1 + msg->retries,
42096 &port->counter_group[CM_XMIT].counter[attr_index]);
42097 if (msg->retries)
42098- atomic_long_add(msg->retries,
42099+ atomic_long_add_unchecked(msg->retries,
42100 &port->counter_group[CM_XMIT_RETRIES].
42101 counter[attr_index]);
42102
42103@@ -3437,7 +3437,7 @@ static void cm_recv_handler(struct ib_mad_agent *mad_agent,
42104 }
42105
42106 attr_id = be16_to_cpu(mad_recv_wc->recv_buf.mad->mad_hdr.attr_id);
42107- atomic_long_inc(&port->counter_group[CM_RECV].
42108+ atomic_long_inc_unchecked(&port->counter_group[CM_RECV].
42109 counter[attr_id - CM_ATTR_ID_OFFSET]);
42110
42111 work = kmalloc(sizeof *work + sizeof(struct ib_sa_path_rec) * paths,
42112@@ -3668,7 +3668,7 @@ static ssize_t cm_show_counter(struct kobject *obj, struct attribute *attr,
42113 cm_attr = container_of(attr, struct cm_counter_attribute, attr);
42114
42115 return sprintf(buf, "%ld\n",
42116- atomic_long_read(&group->counter[cm_attr->index]));
42117+ atomic_long_read_unchecked(&group->counter[cm_attr->index]));
42118 }
42119
42120 static const struct sysfs_ops cm_counter_ops = {
42121diff --git a/drivers/infiniband/core/fmr_pool.c b/drivers/infiniband/core/fmr_pool.c
42122index 9f5ad7c..588cd84 100644
42123--- a/drivers/infiniband/core/fmr_pool.c
42124+++ b/drivers/infiniband/core/fmr_pool.c
42125@@ -98,8 +98,8 @@ struct ib_fmr_pool {
42126
42127 struct task_struct *thread;
42128
42129- atomic_t req_ser;
42130- atomic_t flush_ser;
42131+ atomic_unchecked_t req_ser;
42132+ atomic_unchecked_t flush_ser;
42133
42134 wait_queue_head_t force_wait;
42135 };
42136@@ -179,10 +179,10 @@ static int ib_fmr_cleanup_thread(void *pool_ptr)
42137 struct ib_fmr_pool *pool = pool_ptr;
42138
42139 do {
42140- if (atomic_read(&pool->flush_ser) - atomic_read(&pool->req_ser) < 0) {
42141+ if (atomic_read_unchecked(&pool->flush_ser) - atomic_read_unchecked(&pool->req_ser) < 0) {
42142 ib_fmr_batch_release(pool);
42143
42144- atomic_inc(&pool->flush_ser);
42145+ atomic_inc_unchecked(&pool->flush_ser);
42146 wake_up_interruptible(&pool->force_wait);
42147
42148 if (pool->flush_function)
42149@@ -190,7 +190,7 @@ static int ib_fmr_cleanup_thread(void *pool_ptr)
42150 }
42151
42152 set_current_state(TASK_INTERRUPTIBLE);
42153- if (atomic_read(&pool->flush_ser) - atomic_read(&pool->req_ser) >= 0 &&
42154+ if (atomic_read_unchecked(&pool->flush_ser) - atomic_read_unchecked(&pool->req_ser) >= 0 &&
42155 !kthread_should_stop())
42156 schedule();
42157 __set_current_state(TASK_RUNNING);
42158@@ -282,8 +282,8 @@ struct ib_fmr_pool *ib_create_fmr_pool(struct ib_pd *pd,
42159 pool->dirty_watermark = params->dirty_watermark;
42160 pool->dirty_len = 0;
42161 spin_lock_init(&pool->pool_lock);
42162- atomic_set(&pool->req_ser, 0);
42163- atomic_set(&pool->flush_ser, 0);
42164+ atomic_set_unchecked(&pool->req_ser, 0);
42165+ atomic_set_unchecked(&pool->flush_ser, 0);
42166 init_waitqueue_head(&pool->force_wait);
42167
42168 pool->thread = kthread_run(ib_fmr_cleanup_thread,
42169@@ -411,11 +411,11 @@ int ib_flush_fmr_pool(struct ib_fmr_pool *pool)
42170 }
42171 spin_unlock_irq(&pool->pool_lock);
42172
42173- serial = atomic_inc_return(&pool->req_ser);
42174+ serial = atomic_inc_return_unchecked(&pool->req_ser);
42175 wake_up_process(pool->thread);
42176
42177 if (wait_event_interruptible(pool->force_wait,
42178- atomic_read(&pool->flush_ser) - serial >= 0))
42179+ atomic_read_unchecked(&pool->flush_ser) - serial >= 0))
42180 return -EINTR;
42181
42182 return 0;
42183@@ -525,7 +525,7 @@ int ib_fmr_pool_unmap(struct ib_pool_fmr *fmr)
42184 } else {
42185 list_add_tail(&fmr->list, &pool->dirty_list);
42186 if (++pool->dirty_len >= pool->dirty_watermark) {
42187- atomic_inc(&pool->req_ser);
42188+ atomic_inc_unchecked(&pool->req_ser);
42189 wake_up_process(pool->thread);
42190 }
42191 }
42192diff --git a/drivers/infiniband/hw/cxgb4/mem.c b/drivers/infiniband/hw/cxgb4/mem.c
42193index ec7a298..8742e59 100644
42194--- a/drivers/infiniband/hw/cxgb4/mem.c
42195+++ b/drivers/infiniband/hw/cxgb4/mem.c
42196@@ -249,7 +249,7 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry,
42197 int err;
42198 struct fw_ri_tpte tpt;
42199 u32 stag_idx;
42200- static atomic_t key;
42201+ static atomic_unchecked_t key;
42202
42203 if (c4iw_fatal_error(rdev))
42204 return -EIO;
42205@@ -270,7 +270,7 @@ static int write_tpt_entry(struct c4iw_rdev *rdev, u32 reset_tpt_entry,
42206 if (rdev->stats.stag.cur > rdev->stats.stag.max)
42207 rdev->stats.stag.max = rdev->stats.stag.cur;
42208 mutex_unlock(&rdev->stats.lock);
42209- *stag = (stag_idx << 8) | (atomic_inc_return(&key) & 0xff);
42210+ *stag = (stag_idx << 8) | (atomic_inc_return_unchecked(&key) & 0xff);
42211 }
42212 PDBG("%s stag_state 0x%0x type 0x%0x pdid 0x%0x, stag_idx 0x%x\n",
42213 __func__, stag_state, type, pdid, stag_idx);
42214diff --git a/drivers/infiniband/hw/ipath/ipath_rc.c b/drivers/infiniband/hw/ipath/ipath_rc.c
42215index 79b3dbc..96e5fcc 100644
42216--- a/drivers/infiniband/hw/ipath/ipath_rc.c
42217+++ b/drivers/infiniband/hw/ipath/ipath_rc.c
42218@@ -1868,7 +1868,7 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
42219 struct ib_atomic_eth *ateth;
42220 struct ipath_ack_entry *e;
42221 u64 vaddr;
42222- atomic64_t *maddr;
42223+ atomic64_unchecked_t *maddr;
42224 u64 sdata;
42225 u32 rkey;
42226 u8 next;
42227@@ -1903,11 +1903,11 @@ void ipath_rc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
42228 IB_ACCESS_REMOTE_ATOMIC)))
42229 goto nack_acc_unlck;
42230 /* Perform atomic OP and save result. */
42231- maddr = (atomic64_t *) qp->r_sge.sge.vaddr;
42232+ maddr = (atomic64_unchecked_t *) qp->r_sge.sge.vaddr;
42233 sdata = be64_to_cpu(ateth->swap_data);
42234 e = &qp->s_ack_queue[qp->r_head_ack_queue];
42235 e->atomic_data = (opcode == OP(FETCH_ADD)) ?
42236- (u64) atomic64_add_return(sdata, maddr) - sdata :
42237+ (u64) atomic64_add_return_unchecked(sdata, maddr) - sdata :
42238 (u64) cmpxchg((u64 *) qp->r_sge.sge.vaddr,
42239 be64_to_cpu(ateth->compare_data),
42240 sdata);
42241diff --git a/drivers/infiniband/hw/ipath/ipath_ruc.c b/drivers/infiniband/hw/ipath/ipath_ruc.c
42242index 1f95bba..9530f87 100644
42243--- a/drivers/infiniband/hw/ipath/ipath_ruc.c
42244+++ b/drivers/infiniband/hw/ipath/ipath_ruc.c
42245@@ -266,7 +266,7 @@ static void ipath_ruc_loopback(struct ipath_qp *sqp)
42246 unsigned long flags;
42247 struct ib_wc wc;
42248 u64 sdata;
42249- atomic64_t *maddr;
42250+ atomic64_unchecked_t *maddr;
42251 enum ib_wc_status send_status;
42252
42253 /*
42254@@ -382,11 +382,11 @@ again:
42255 IB_ACCESS_REMOTE_ATOMIC)))
42256 goto acc_err;
42257 /* Perform atomic OP and save result. */
42258- maddr = (atomic64_t *) qp->r_sge.sge.vaddr;
42259+ maddr = (atomic64_unchecked_t *) qp->r_sge.sge.vaddr;
42260 sdata = wqe->wr.wr.atomic.compare_add;
42261 *(u64 *) sqp->s_sge.sge.vaddr =
42262 (wqe->wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD) ?
42263- (u64) atomic64_add_return(sdata, maddr) - sdata :
42264+ (u64) atomic64_add_return_unchecked(sdata, maddr) - sdata :
42265 (u64) cmpxchg((u64 *) qp->r_sge.sge.vaddr,
42266 sdata, wqe->wr.wr.atomic.swap);
42267 goto send_comp;
42268diff --git a/drivers/infiniband/hw/mlx4/mad.c b/drivers/infiniband/hw/mlx4/mad.c
42269index fd36ec6..a6a082f 100644
42270--- a/drivers/infiniband/hw/mlx4/mad.c
42271+++ b/drivers/infiniband/hw/mlx4/mad.c
42272@@ -98,7 +98,7 @@ __be64 mlx4_ib_gen_node_guid(void)
42273
42274 __be64 mlx4_ib_get_new_demux_tid(struct mlx4_ib_demux_ctx *ctx)
42275 {
42276- return cpu_to_be64(atomic_inc_return(&ctx->tid)) |
42277+ return cpu_to_be64(atomic_inc_return_unchecked(&ctx->tid)) |
42278 cpu_to_be64(0xff00000000000000LL);
42279 }
42280
42281diff --git a/drivers/infiniband/hw/mlx4/mcg.c b/drivers/infiniband/hw/mlx4/mcg.c
42282index ed327e6..ca1739e0 100644
42283--- a/drivers/infiniband/hw/mlx4/mcg.c
42284+++ b/drivers/infiniband/hw/mlx4/mcg.c
42285@@ -1041,7 +1041,7 @@ int mlx4_ib_mcg_port_init(struct mlx4_ib_demux_ctx *ctx)
42286 {
42287 char name[20];
42288
42289- atomic_set(&ctx->tid, 0);
42290+ atomic_set_unchecked(&ctx->tid, 0);
42291 sprintf(name, "mlx4_ib_mcg%d", ctx->port);
42292 ctx->mcg_wq = create_singlethread_workqueue(name);
42293 if (!ctx->mcg_wq)
42294diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
42295index 66b0b7d..f14836a 100644
42296--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
42297+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
42298@@ -425,7 +425,7 @@ struct mlx4_ib_demux_ctx {
42299 struct list_head mcg_mgid0_list;
42300 struct workqueue_struct *mcg_wq;
42301 struct mlx4_ib_demux_pv_ctx **tun;
42302- atomic_t tid;
42303+ atomic_unchecked_t tid;
42304 int flushing; /* flushing the work queue */
42305 };
42306
42307diff --git a/drivers/infiniband/hw/mthca/mthca_cmd.c b/drivers/infiniband/hw/mthca/mthca_cmd.c
42308index 9d3e5c1..6f166df 100644
42309--- a/drivers/infiniband/hw/mthca/mthca_cmd.c
42310+++ b/drivers/infiniband/hw/mthca/mthca_cmd.c
42311@@ -772,7 +772,7 @@ static void mthca_setup_cmd_doorbells(struct mthca_dev *dev, u64 base)
42312 mthca_dbg(dev, "Mapped doorbell page for posting FW commands\n");
42313 }
42314
42315-int mthca_QUERY_FW(struct mthca_dev *dev)
42316+int __intentional_overflow(-1) mthca_QUERY_FW(struct mthca_dev *dev)
42317 {
42318 struct mthca_mailbox *mailbox;
42319 u32 *outbox;
42320@@ -1612,7 +1612,7 @@ int mthca_HW2SW_MPT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
42321 CMD_TIME_CLASS_B);
42322 }
42323
42324-int mthca_WRITE_MTT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
42325+int __intentional_overflow(-1) mthca_WRITE_MTT(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
42326 int num_mtt)
42327 {
42328 return mthca_cmd(dev, mailbox->dma, num_mtt, 0, CMD_WRITE_MTT,
42329@@ -1634,7 +1634,7 @@ int mthca_MAP_EQ(struct mthca_dev *dev, u64 event_mask, int unmap,
42330 0, CMD_MAP_EQ, CMD_TIME_CLASS_B);
42331 }
42332
42333-int mthca_SW2HW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
42334+int __intentional_overflow(-1) mthca_SW2HW_EQ(struct mthca_dev *dev, struct mthca_mailbox *mailbox,
42335 int eq_num)
42336 {
42337 return mthca_cmd(dev, mailbox->dma, eq_num, 0, CMD_SW2HW_EQ,
42338@@ -1857,7 +1857,7 @@ int mthca_CONF_SPECIAL_QP(struct mthca_dev *dev, int type, u32 qpn)
42339 CMD_TIME_CLASS_B);
42340 }
42341
42342-int mthca_MAD_IFC(struct mthca_dev *dev, int ignore_mkey, int ignore_bkey,
42343+int __intentional_overflow(-1) mthca_MAD_IFC(struct mthca_dev *dev, int ignore_mkey, int ignore_bkey,
42344 int port, struct ib_wc *in_wc, struct ib_grh *in_grh,
42345 void *in_mad, void *response_mad)
42346 {
42347diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c
42348index ded76c1..0cf0a08 100644
42349--- a/drivers/infiniband/hw/mthca/mthca_main.c
42350+++ b/drivers/infiniband/hw/mthca/mthca_main.c
42351@@ -692,7 +692,7 @@ err_close:
42352 return err;
42353 }
42354
42355-static int mthca_setup_hca(struct mthca_dev *dev)
42356+static int __intentional_overflow(-1) mthca_setup_hca(struct mthca_dev *dev)
42357 {
42358 int err;
42359
42360diff --git a/drivers/infiniband/hw/mthca/mthca_mr.c b/drivers/infiniband/hw/mthca/mthca_mr.c
42361index ed9a989..6aa5dc2 100644
42362--- a/drivers/infiniband/hw/mthca/mthca_mr.c
42363+++ b/drivers/infiniband/hw/mthca/mthca_mr.c
42364@@ -81,7 +81,7 @@ struct mthca_mpt_entry {
42365 * through the bitmaps)
42366 */
42367
42368-static u32 mthca_buddy_alloc(struct mthca_buddy *buddy, int order)
42369+static u32 __intentional_overflow(-1) mthca_buddy_alloc(struct mthca_buddy *buddy, int order)
42370 {
42371 int o;
42372 int m;
42373@@ -426,7 +426,7 @@ static inline u32 adjust_key(struct mthca_dev *dev, u32 key)
42374 return key;
42375 }
42376
42377-int mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift,
42378+int __intentional_overflow(-1) mthca_mr_alloc(struct mthca_dev *dev, u32 pd, int buffer_size_shift,
42379 u64 iova, u64 total_size, u32 access, struct mthca_mr *mr)
42380 {
42381 struct mthca_mailbox *mailbox;
42382@@ -516,7 +516,7 @@ int mthca_mr_alloc_notrans(struct mthca_dev *dev, u32 pd,
42383 return mthca_mr_alloc(dev, pd, 12, 0, ~0ULL, access, mr);
42384 }
42385
42386-int mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd,
42387+int __intentional_overflow(-1) mthca_mr_alloc_phys(struct mthca_dev *dev, u32 pd,
42388 u64 *buffer_list, int buffer_size_shift,
42389 int list_len, u64 iova, u64 total_size,
42390 u32 access, struct mthca_mr *mr)
42391diff --git a/drivers/infiniband/hw/mthca/mthca_provider.c b/drivers/infiniband/hw/mthca/mthca_provider.c
42392index 415f8e1..e34214e 100644
42393--- a/drivers/infiniband/hw/mthca/mthca_provider.c
42394+++ b/drivers/infiniband/hw/mthca/mthca_provider.c
42395@@ -764,7 +764,7 @@ unlock:
42396 return 0;
42397 }
42398
42399-static int mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
42400+static int __intentional_overflow(-1) mthca_resize_cq(struct ib_cq *ibcq, int entries, struct ib_udata *udata)
42401 {
42402 struct mthca_dev *dev = to_mdev(ibcq->device);
42403 struct mthca_cq *cq = to_mcq(ibcq);
42404diff --git a/drivers/infiniband/hw/nes/nes.c b/drivers/infiniband/hw/nes/nes.c
42405index 353c7b0..c6ce921 100644
42406--- a/drivers/infiniband/hw/nes/nes.c
42407+++ b/drivers/infiniband/hw/nes/nes.c
42408@@ -98,7 +98,7 @@ MODULE_PARM_DESC(limit_maxrdreqsz, "Limit max read request size to 256 Bytes");
42409 LIST_HEAD(nes_adapter_list);
42410 static LIST_HEAD(nes_dev_list);
42411
42412-atomic_t qps_destroyed;
42413+atomic_unchecked_t qps_destroyed;
42414
42415 static unsigned int ee_flsh_adapter;
42416 static unsigned int sysfs_nonidx_addr;
42417@@ -269,7 +269,7 @@ static void nes_cqp_rem_ref_callback(struct nes_device *nesdev, struct nes_cqp_r
42418 struct nes_qp *nesqp = cqp_request->cqp_callback_pointer;
42419 struct nes_adapter *nesadapter = nesdev->nesadapter;
42420
42421- atomic_inc(&qps_destroyed);
42422+ atomic_inc_unchecked(&qps_destroyed);
42423
42424 /* Free the control structures */
42425
42426diff --git a/drivers/infiniband/hw/nes/nes.h b/drivers/infiniband/hw/nes/nes.h
42427index 33cc589..3bd6538 100644
42428--- a/drivers/infiniband/hw/nes/nes.h
42429+++ b/drivers/infiniband/hw/nes/nes.h
42430@@ -177,17 +177,17 @@ extern unsigned int nes_debug_level;
42431 extern unsigned int wqm_quanta;
42432 extern struct list_head nes_adapter_list;
42433
42434-extern atomic_t cm_connects;
42435-extern atomic_t cm_accepts;
42436-extern atomic_t cm_disconnects;
42437-extern atomic_t cm_closes;
42438-extern atomic_t cm_connecteds;
42439-extern atomic_t cm_connect_reqs;
42440-extern atomic_t cm_rejects;
42441-extern atomic_t mod_qp_timouts;
42442-extern atomic_t qps_created;
42443-extern atomic_t qps_destroyed;
42444-extern atomic_t sw_qps_destroyed;
42445+extern atomic_unchecked_t cm_connects;
42446+extern atomic_unchecked_t cm_accepts;
42447+extern atomic_unchecked_t cm_disconnects;
42448+extern atomic_unchecked_t cm_closes;
42449+extern atomic_unchecked_t cm_connecteds;
42450+extern atomic_unchecked_t cm_connect_reqs;
42451+extern atomic_unchecked_t cm_rejects;
42452+extern atomic_unchecked_t mod_qp_timouts;
42453+extern atomic_unchecked_t qps_created;
42454+extern atomic_unchecked_t qps_destroyed;
42455+extern atomic_unchecked_t sw_qps_destroyed;
42456 extern u32 mh_detected;
42457 extern u32 mh_pauses_sent;
42458 extern u32 cm_packets_sent;
42459@@ -196,16 +196,16 @@ extern u32 cm_packets_created;
42460 extern u32 cm_packets_received;
42461 extern u32 cm_packets_dropped;
42462 extern u32 cm_packets_retrans;
42463-extern atomic_t cm_listens_created;
42464-extern atomic_t cm_listens_destroyed;
42465+extern atomic_unchecked_t cm_listens_created;
42466+extern atomic_unchecked_t cm_listens_destroyed;
42467 extern u32 cm_backlog_drops;
42468-extern atomic_t cm_loopbacks;
42469-extern atomic_t cm_nodes_created;
42470-extern atomic_t cm_nodes_destroyed;
42471-extern atomic_t cm_accel_dropped_pkts;
42472-extern atomic_t cm_resets_recvd;
42473-extern atomic_t pau_qps_created;
42474-extern atomic_t pau_qps_destroyed;
42475+extern atomic_unchecked_t cm_loopbacks;
42476+extern atomic_unchecked_t cm_nodes_created;
42477+extern atomic_unchecked_t cm_nodes_destroyed;
42478+extern atomic_unchecked_t cm_accel_dropped_pkts;
42479+extern atomic_unchecked_t cm_resets_recvd;
42480+extern atomic_unchecked_t pau_qps_created;
42481+extern atomic_unchecked_t pau_qps_destroyed;
42482
42483 extern u32 int_mod_timer_init;
42484 extern u32 int_mod_cq_depth_256;
42485diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
42486index dfa9df4..6bf7221 100644
42487--- a/drivers/infiniband/hw/nes/nes_cm.c
42488+++ b/drivers/infiniband/hw/nes/nes_cm.c
42489@@ -68,14 +68,14 @@ u32 cm_packets_dropped;
42490 u32 cm_packets_retrans;
42491 u32 cm_packets_created;
42492 u32 cm_packets_received;
42493-atomic_t cm_listens_created;
42494-atomic_t cm_listens_destroyed;
42495+atomic_unchecked_t cm_listens_created;
42496+atomic_unchecked_t cm_listens_destroyed;
42497 u32 cm_backlog_drops;
42498-atomic_t cm_loopbacks;
42499-atomic_t cm_nodes_created;
42500-atomic_t cm_nodes_destroyed;
42501-atomic_t cm_accel_dropped_pkts;
42502-atomic_t cm_resets_recvd;
42503+atomic_unchecked_t cm_loopbacks;
42504+atomic_unchecked_t cm_nodes_created;
42505+atomic_unchecked_t cm_nodes_destroyed;
42506+atomic_unchecked_t cm_accel_dropped_pkts;
42507+atomic_unchecked_t cm_resets_recvd;
42508
42509 static inline int mini_cm_accelerated(struct nes_cm_core *, struct nes_cm_node *);
42510 static struct nes_cm_listener *mini_cm_listen(struct nes_cm_core *, struct nes_vnic *, struct nes_cm_info *);
42511@@ -134,28 +134,28 @@ static void record_ird_ord(struct nes_cm_node *, u16, u16);
42512 /* instance of function pointers for client API */
42513 /* set address of this instance to cm_core->cm_ops at cm_core alloc */
42514 static struct nes_cm_ops nes_cm_api = {
42515- mini_cm_accelerated,
42516- mini_cm_listen,
42517- mini_cm_del_listen,
42518- mini_cm_connect,
42519- mini_cm_close,
42520- mini_cm_accept,
42521- mini_cm_reject,
42522- mini_cm_recv_pkt,
42523- mini_cm_dealloc_core,
42524- mini_cm_get,
42525- mini_cm_set
42526+ .accelerated = mini_cm_accelerated,
42527+ .listen = mini_cm_listen,
42528+ .stop_listener = mini_cm_del_listen,
42529+ .connect = mini_cm_connect,
42530+ .close = mini_cm_close,
42531+ .accept = mini_cm_accept,
42532+ .reject = mini_cm_reject,
42533+ .recv_pkt = mini_cm_recv_pkt,
42534+ .destroy_cm_core = mini_cm_dealloc_core,
42535+ .get = mini_cm_get,
42536+ .set = mini_cm_set
42537 };
42538
42539 static struct nes_cm_core *g_cm_core;
42540
42541-atomic_t cm_connects;
42542-atomic_t cm_accepts;
42543-atomic_t cm_disconnects;
42544-atomic_t cm_closes;
42545-atomic_t cm_connecteds;
42546-atomic_t cm_connect_reqs;
42547-atomic_t cm_rejects;
42548+atomic_unchecked_t cm_connects;
42549+atomic_unchecked_t cm_accepts;
42550+atomic_unchecked_t cm_disconnects;
42551+atomic_unchecked_t cm_closes;
42552+atomic_unchecked_t cm_connecteds;
42553+atomic_unchecked_t cm_connect_reqs;
42554+atomic_unchecked_t cm_rejects;
42555
42556 int nes_add_ref_cm_node(struct nes_cm_node *cm_node)
42557 {
42558@@ -1319,7 +1319,7 @@ static int mini_cm_dec_refcnt_listen(struct nes_cm_core *cm_core,
42559 kfree(listener);
42560 listener = NULL;
42561 ret = 0;
42562- atomic_inc(&cm_listens_destroyed);
42563+ atomic_inc_unchecked(&cm_listens_destroyed);
42564 } else {
42565 spin_unlock_irqrestore(&cm_core->listen_list_lock, flags);
42566 }
42567@@ -1513,7 +1513,7 @@ static struct nes_cm_node *make_cm_node(struct nes_cm_core *cm_core,
42568 cm_node->rem_mac);
42569
42570 add_hte_node(cm_core, cm_node);
42571- atomic_inc(&cm_nodes_created);
42572+ atomic_inc_unchecked(&cm_nodes_created);
42573
42574 return cm_node;
42575 }
42576@@ -1571,7 +1571,7 @@ static int rem_ref_cm_node(struct nes_cm_core *cm_core,
42577 }
42578
42579 atomic_dec(&cm_core->node_cnt);
42580- atomic_inc(&cm_nodes_destroyed);
42581+ atomic_inc_unchecked(&cm_nodes_destroyed);
42582 nesqp = cm_node->nesqp;
42583 if (nesqp) {
42584 nesqp->cm_node = NULL;
42585@@ -1635,7 +1635,7 @@ static int process_options(struct nes_cm_node *cm_node, u8 *optionsloc,
42586
42587 static void drop_packet(struct sk_buff *skb)
42588 {
42589- atomic_inc(&cm_accel_dropped_pkts);
42590+ atomic_inc_unchecked(&cm_accel_dropped_pkts);
42591 dev_kfree_skb_any(skb);
42592 }
42593
42594@@ -1698,7 +1698,7 @@ static void handle_rst_pkt(struct nes_cm_node *cm_node, struct sk_buff *skb,
42595 {
42596
42597 int reset = 0; /* whether to send reset in case of err.. */
42598- atomic_inc(&cm_resets_recvd);
42599+ atomic_inc_unchecked(&cm_resets_recvd);
42600 nes_debug(NES_DBG_CM, "Received Reset, cm_node = %p, state = %u."
42601 " refcnt=%d\n", cm_node, cm_node->state,
42602 atomic_read(&cm_node->ref_count));
42603@@ -2339,7 +2339,7 @@ static struct nes_cm_node *mini_cm_connect(struct nes_cm_core *cm_core,
42604 rem_ref_cm_node(cm_node->cm_core, cm_node);
42605 return NULL;
42606 }
42607- atomic_inc(&cm_loopbacks);
42608+ atomic_inc_unchecked(&cm_loopbacks);
42609 loopbackremotenode->loopbackpartner = cm_node;
42610 loopbackremotenode->tcp_cntxt.rcv_wscale =
42611 NES_CM_DEFAULT_RCV_WND_SCALE;
42612@@ -2614,7 +2614,7 @@ static int mini_cm_recv_pkt(struct nes_cm_core *cm_core,
42613 nes_queue_mgt_skbs(skb, nesvnic, cm_node->nesqp);
42614 else {
42615 rem_ref_cm_node(cm_core, cm_node);
42616- atomic_inc(&cm_accel_dropped_pkts);
42617+ atomic_inc_unchecked(&cm_accel_dropped_pkts);
42618 dev_kfree_skb_any(skb);
42619 }
42620 break;
42621@@ -2922,7 +2922,7 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp)
42622
42623 if ((cm_id) && (cm_id->event_handler)) {
42624 if (issue_disconn) {
42625- atomic_inc(&cm_disconnects);
42626+ atomic_inc_unchecked(&cm_disconnects);
42627 cm_event.event = IW_CM_EVENT_DISCONNECT;
42628 cm_event.status = disconn_status;
42629 cm_event.local_addr = cm_id->local_addr;
42630@@ -2944,7 +2944,7 @@ static int nes_cm_disconn_true(struct nes_qp *nesqp)
42631 }
42632
42633 if (issue_close) {
42634- atomic_inc(&cm_closes);
42635+ atomic_inc_unchecked(&cm_closes);
42636 nes_disconnect(nesqp, 1);
42637
42638 cm_id->provider_data = nesqp;
42639@@ -3082,7 +3082,7 @@ int nes_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
42640
42641 nes_debug(NES_DBG_CM, "QP%u, cm_node=%p, jiffies = %lu listener = %p\n",
42642 nesqp->hwqp.qp_id, cm_node, jiffies, cm_node->listener);
42643- atomic_inc(&cm_accepts);
42644+ atomic_inc_unchecked(&cm_accepts);
42645
42646 nes_debug(NES_DBG_CM, "netdev refcnt = %u.\n",
42647 netdev_refcnt_read(nesvnic->netdev));
42648@@ -3278,7 +3278,7 @@ int nes_reject(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
42649 struct nes_cm_core *cm_core;
42650 u8 *start_buff;
42651
42652- atomic_inc(&cm_rejects);
42653+ atomic_inc_unchecked(&cm_rejects);
42654 cm_node = (struct nes_cm_node *)cm_id->provider_data;
42655 loopback = cm_node->loopbackpartner;
42656 cm_core = cm_node->cm_core;
42657@@ -3340,7 +3340,7 @@ int nes_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
42658 ntohs(raddr->sin_port), ntohl(laddr->sin_addr.s_addr),
42659 ntohs(laddr->sin_port));
42660
42661- atomic_inc(&cm_connects);
42662+ atomic_inc_unchecked(&cm_connects);
42663 nesqp->active_conn = 1;
42664
42665 /* cache the cm_id in the qp */
42666@@ -3451,7 +3451,7 @@ int nes_create_listen(struct iw_cm_id *cm_id, int backlog)
42667 g_cm_core->api->stop_listener(g_cm_core, (void *)cm_node);
42668 return err;
42669 }
42670- atomic_inc(&cm_listens_created);
42671+ atomic_inc_unchecked(&cm_listens_created);
42672 }
42673
42674 cm_id->add_ref(cm_id);
42675@@ -3558,7 +3558,7 @@ static void cm_event_connected(struct nes_cm_event *event)
42676
42677 if (nesqp->destroyed)
42678 return;
42679- atomic_inc(&cm_connecteds);
42680+ atomic_inc_unchecked(&cm_connecteds);
42681 nes_debug(NES_DBG_CM, "QP%u attempting to connect to 0x%08X:0x%04X on"
42682 " local port 0x%04X. jiffies = %lu.\n",
42683 nesqp->hwqp.qp_id, ntohl(raddr->sin_addr.s_addr),
42684@@ -3741,7 +3741,7 @@ static void cm_event_reset(struct nes_cm_event *event)
42685
42686 cm_id->add_ref(cm_id);
42687 ret = cm_id->event_handler(cm_id, &cm_event);
42688- atomic_inc(&cm_closes);
42689+ atomic_inc_unchecked(&cm_closes);
42690 cm_event.event = IW_CM_EVENT_CLOSE;
42691 cm_event.status = 0;
42692 cm_event.provider_data = cm_id->provider_data;
42693@@ -3781,7 +3781,7 @@ static void cm_event_mpa_req(struct nes_cm_event *event)
42694 return;
42695 cm_id = cm_node->cm_id;
42696
42697- atomic_inc(&cm_connect_reqs);
42698+ atomic_inc_unchecked(&cm_connect_reqs);
42699 nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n",
42700 cm_node, cm_id, jiffies);
42701
42702@@ -3830,7 +3830,7 @@ static void cm_event_mpa_reject(struct nes_cm_event *event)
42703 return;
42704 cm_id = cm_node->cm_id;
42705
42706- atomic_inc(&cm_connect_reqs);
42707+ atomic_inc_unchecked(&cm_connect_reqs);
42708 nes_debug(NES_DBG_CM, "cm_node = %p - cm_id = %p, jiffies = %lu\n",
42709 cm_node, cm_id, jiffies);
42710
42711diff --git a/drivers/infiniband/hw/nes/nes_mgt.c b/drivers/infiniband/hw/nes/nes_mgt.c
42712index 4166452..fc952c3 100644
42713--- a/drivers/infiniband/hw/nes/nes_mgt.c
42714+++ b/drivers/infiniband/hw/nes/nes_mgt.c
42715@@ -40,8 +40,8 @@
42716 #include "nes.h"
42717 #include "nes_mgt.h"
42718
42719-atomic_t pau_qps_created;
42720-atomic_t pau_qps_destroyed;
42721+atomic_unchecked_t pau_qps_created;
42722+atomic_unchecked_t pau_qps_destroyed;
42723
42724 static void nes_replenish_mgt_rq(struct nes_vnic_mgt *mgtvnic)
42725 {
42726@@ -621,7 +621,7 @@ void nes_destroy_pau_qp(struct nes_device *nesdev, struct nes_qp *nesqp)
42727 {
42728 struct sk_buff *skb;
42729 unsigned long flags;
42730- atomic_inc(&pau_qps_destroyed);
42731+ atomic_inc_unchecked(&pau_qps_destroyed);
42732
42733 /* Free packets that have not yet been forwarded */
42734 /* Lock is acquired by skb_dequeue when removing the skb */
42735@@ -810,7 +810,7 @@ static void nes_mgt_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq *
42736 cq->cq_vbase[head].cqe_words[NES_NIC_CQE_HASH_RCVNXT]);
42737 skb_queue_head_init(&nesqp->pau_list);
42738 spin_lock_init(&nesqp->pau_lock);
42739- atomic_inc(&pau_qps_created);
42740+ atomic_inc_unchecked(&pau_qps_created);
42741 nes_change_quad_hash(nesdev, mgtvnic->nesvnic, nesqp);
42742 }
42743
42744diff --git a/drivers/infiniband/hw/nes/nes_nic.c b/drivers/infiniband/hw/nes/nes_nic.c
42745index 49eb511..a774366 100644
42746--- a/drivers/infiniband/hw/nes/nes_nic.c
42747+++ b/drivers/infiniband/hw/nes/nes_nic.c
42748@@ -1273,39 +1273,39 @@ static void nes_netdev_get_ethtool_stats(struct net_device *netdev,
42749 target_stat_values[++index] = mh_detected;
42750 target_stat_values[++index] = mh_pauses_sent;
42751 target_stat_values[++index] = nesvnic->endnode_ipv4_tcp_retransmits;
42752- target_stat_values[++index] = atomic_read(&cm_connects);
42753- target_stat_values[++index] = atomic_read(&cm_accepts);
42754- target_stat_values[++index] = atomic_read(&cm_disconnects);
42755- target_stat_values[++index] = atomic_read(&cm_connecteds);
42756- target_stat_values[++index] = atomic_read(&cm_connect_reqs);
42757- target_stat_values[++index] = atomic_read(&cm_rejects);
42758- target_stat_values[++index] = atomic_read(&mod_qp_timouts);
42759- target_stat_values[++index] = atomic_read(&qps_created);
42760- target_stat_values[++index] = atomic_read(&sw_qps_destroyed);
42761- target_stat_values[++index] = atomic_read(&qps_destroyed);
42762- target_stat_values[++index] = atomic_read(&cm_closes);
42763+ target_stat_values[++index] = atomic_read_unchecked(&cm_connects);
42764+ target_stat_values[++index] = atomic_read_unchecked(&cm_accepts);
42765+ target_stat_values[++index] = atomic_read_unchecked(&cm_disconnects);
42766+ target_stat_values[++index] = atomic_read_unchecked(&cm_connecteds);
42767+ target_stat_values[++index] = atomic_read_unchecked(&cm_connect_reqs);
42768+ target_stat_values[++index] = atomic_read_unchecked(&cm_rejects);
42769+ target_stat_values[++index] = atomic_read_unchecked(&mod_qp_timouts);
42770+ target_stat_values[++index] = atomic_read_unchecked(&qps_created);
42771+ target_stat_values[++index] = atomic_read_unchecked(&sw_qps_destroyed);
42772+ target_stat_values[++index] = atomic_read_unchecked(&qps_destroyed);
42773+ target_stat_values[++index] = atomic_read_unchecked(&cm_closes);
42774 target_stat_values[++index] = cm_packets_sent;
42775 target_stat_values[++index] = cm_packets_bounced;
42776 target_stat_values[++index] = cm_packets_created;
42777 target_stat_values[++index] = cm_packets_received;
42778 target_stat_values[++index] = cm_packets_dropped;
42779 target_stat_values[++index] = cm_packets_retrans;
42780- target_stat_values[++index] = atomic_read(&cm_listens_created);
42781- target_stat_values[++index] = atomic_read(&cm_listens_destroyed);
42782+ target_stat_values[++index] = atomic_read_unchecked(&cm_listens_created);
42783+ target_stat_values[++index] = atomic_read_unchecked(&cm_listens_destroyed);
42784 target_stat_values[++index] = cm_backlog_drops;
42785- target_stat_values[++index] = atomic_read(&cm_loopbacks);
42786- target_stat_values[++index] = atomic_read(&cm_nodes_created);
42787- target_stat_values[++index] = atomic_read(&cm_nodes_destroyed);
42788- target_stat_values[++index] = atomic_read(&cm_accel_dropped_pkts);
42789- target_stat_values[++index] = atomic_read(&cm_resets_recvd);
42790+ target_stat_values[++index] = atomic_read_unchecked(&cm_loopbacks);
42791+ target_stat_values[++index] = atomic_read_unchecked(&cm_nodes_created);
42792+ target_stat_values[++index] = atomic_read_unchecked(&cm_nodes_destroyed);
42793+ target_stat_values[++index] = atomic_read_unchecked(&cm_accel_dropped_pkts);
42794+ target_stat_values[++index] = atomic_read_unchecked(&cm_resets_recvd);
42795 target_stat_values[++index] = nesadapter->free_4kpbl;
42796 target_stat_values[++index] = nesadapter->free_256pbl;
42797 target_stat_values[++index] = int_mod_timer_init;
42798 target_stat_values[++index] = nesvnic->lro_mgr.stats.aggregated;
42799 target_stat_values[++index] = nesvnic->lro_mgr.stats.flushed;
42800 target_stat_values[++index] = nesvnic->lro_mgr.stats.no_desc;
42801- target_stat_values[++index] = atomic_read(&pau_qps_created);
42802- target_stat_values[++index] = atomic_read(&pau_qps_destroyed);
42803+ target_stat_values[++index] = atomic_read_unchecked(&pau_qps_created);
42804+ target_stat_values[++index] = atomic_read_unchecked(&pau_qps_destroyed);
42805 }
42806
42807 /**
42808diff --git a/drivers/infiniband/hw/nes/nes_verbs.c b/drivers/infiniband/hw/nes/nes_verbs.c
42809index 218dd35..97ce31d 100644
42810--- a/drivers/infiniband/hw/nes/nes_verbs.c
42811+++ b/drivers/infiniband/hw/nes/nes_verbs.c
42812@@ -46,9 +46,9 @@
42813
42814 #include <rdma/ib_umem.h>
42815
42816-atomic_t mod_qp_timouts;
42817-atomic_t qps_created;
42818-atomic_t sw_qps_destroyed;
42819+atomic_unchecked_t mod_qp_timouts;
42820+atomic_unchecked_t qps_created;
42821+atomic_unchecked_t sw_qps_destroyed;
42822
42823 static void nes_unregister_ofa_device(struct nes_ib_device *nesibdev);
42824
42825@@ -1134,7 +1134,7 @@ static struct ib_qp *nes_create_qp(struct ib_pd *ibpd,
42826 if (init_attr->create_flags)
42827 return ERR_PTR(-EINVAL);
42828
42829- atomic_inc(&qps_created);
42830+ atomic_inc_unchecked(&qps_created);
42831 switch (init_attr->qp_type) {
42832 case IB_QPT_RC:
42833 if (nes_drv_opt & NES_DRV_OPT_NO_INLINE_DATA) {
42834@@ -1468,7 +1468,7 @@ static int nes_destroy_qp(struct ib_qp *ibqp)
42835 struct iw_cm_event cm_event;
42836 int ret = 0;
42837
42838- atomic_inc(&sw_qps_destroyed);
42839+ atomic_inc_unchecked(&sw_qps_destroyed);
42840 nesqp->destroyed = 1;
42841
42842 /* Blow away the connection if it exists. */
42843diff --git a/drivers/infiniband/hw/qib/qib.h b/drivers/infiniband/hw/qib/qib.h
42844index c00ae09..04e91be 100644
42845--- a/drivers/infiniband/hw/qib/qib.h
42846+++ b/drivers/infiniband/hw/qib/qib.h
42847@@ -52,6 +52,7 @@
42848 #include <linux/kref.h>
42849 #include <linux/sched.h>
42850 #include <linux/kthread.h>
42851+#include <linux/slab.h>
42852
42853 #include "qib_common.h"
42854 #include "qib_verbs.h"
42855diff --git a/drivers/input/gameport/gameport.c b/drivers/input/gameport/gameport.c
42856index 24c41ba..102d71f 100644
42857--- a/drivers/input/gameport/gameport.c
42858+++ b/drivers/input/gameport/gameport.c
42859@@ -490,14 +490,14 @@ EXPORT_SYMBOL(gameport_set_phys);
42860 */
42861 static void gameport_init_port(struct gameport *gameport)
42862 {
42863- static atomic_t gameport_no = ATOMIC_INIT(0);
42864+ static atomic_unchecked_t gameport_no = ATOMIC_INIT(0);
42865
42866 __module_get(THIS_MODULE);
42867
42868 mutex_init(&gameport->drv_mutex);
42869 device_initialize(&gameport->dev);
42870 dev_set_name(&gameport->dev, "gameport%lu",
42871- (unsigned long)atomic_inc_return(&gameport_no) - 1);
42872+ (unsigned long)atomic_inc_return_unchecked(&gameport_no) - 1);
42873 gameport->dev.bus = &gameport_bus;
42874 gameport->dev.release = gameport_release_port;
42875 if (gameport->parent)
42876diff --git a/drivers/input/input.c b/drivers/input/input.c
42877index 1c4c0db..6f7abe3 100644
42878--- a/drivers/input/input.c
42879+++ b/drivers/input/input.c
42880@@ -1772,7 +1772,7 @@ EXPORT_SYMBOL_GPL(input_class);
42881 */
42882 struct input_dev *input_allocate_device(void)
42883 {
42884- static atomic_t input_no = ATOMIC_INIT(0);
42885+ static atomic_unchecked_t input_no = ATOMIC_INIT(0);
42886 struct input_dev *dev;
42887
42888 dev = kzalloc(sizeof(struct input_dev), GFP_KERNEL);
42889@@ -1787,7 +1787,7 @@ struct input_dev *input_allocate_device(void)
42890 INIT_LIST_HEAD(&dev->node);
42891
42892 dev_set_name(&dev->dev, "input%ld",
42893- (unsigned long) atomic_inc_return(&input_no) - 1);
42894+ (unsigned long) atomic_inc_return_unchecked(&input_no) - 1);
42895
42896 __module_get(THIS_MODULE);
42897 }
42898diff --git a/drivers/input/joystick/sidewinder.c b/drivers/input/joystick/sidewinder.c
42899index 4a95b22..874c182 100644
42900--- a/drivers/input/joystick/sidewinder.c
42901+++ b/drivers/input/joystick/sidewinder.c
42902@@ -30,6 +30,7 @@
42903 #include <linux/kernel.h>
42904 #include <linux/module.h>
42905 #include <linux/slab.h>
42906+#include <linux/sched.h>
42907 #include <linux/input.h>
42908 #include <linux/gameport.h>
42909 #include <linux/jiffies.h>
42910diff --git a/drivers/input/joystick/xpad.c b/drivers/input/joystick/xpad.c
42911index 603fe0d..f63decc 100644
42912--- a/drivers/input/joystick/xpad.c
42913+++ b/drivers/input/joystick/xpad.c
42914@@ -737,7 +737,7 @@ static void xpad_led_set(struct led_classdev *led_cdev,
42915
42916 static int xpad_led_probe(struct usb_xpad *xpad)
42917 {
42918- static atomic_t led_seq = ATOMIC_INIT(0);
42919+ static atomic_unchecked_t led_seq = ATOMIC_INIT(0);
42920 long led_no;
42921 struct xpad_led *led;
42922 struct led_classdev *led_cdev;
42923@@ -750,7 +750,7 @@ static int xpad_led_probe(struct usb_xpad *xpad)
42924 if (!led)
42925 return -ENOMEM;
42926
42927- led_no = (long)atomic_inc_return(&led_seq) - 1;
42928+ led_no = (long)atomic_inc_return_unchecked(&led_seq) - 1;
42929
42930 snprintf(led->name, sizeof(led->name), "xpad%ld", led_no);
42931 led->xpad = xpad;
42932diff --git a/drivers/input/misc/ims-pcu.c b/drivers/input/misc/ims-pcu.c
42933index 5a73639..d586683 100644
42934--- a/drivers/input/misc/ims-pcu.c
42935+++ b/drivers/input/misc/ims-pcu.c
42936@@ -1850,7 +1850,7 @@ static int ims_pcu_identify_type(struct ims_pcu *pcu, u8 *device_id)
42937
42938 static int ims_pcu_init_application_mode(struct ims_pcu *pcu)
42939 {
42940- static atomic_t device_no = ATOMIC_INIT(0);
42941+ static atomic_unchecked_t device_no = ATOMIC_INIT(0);
42942
42943 const struct ims_pcu_device_info *info;
42944 int error;
42945@@ -1881,7 +1881,7 @@ static int ims_pcu_init_application_mode(struct ims_pcu *pcu)
42946 }
42947
42948 /* Device appears to be operable, complete initialization */
42949- pcu->device_no = atomic_inc_return(&device_no) - 1;
42950+ pcu->device_no = atomic_inc_return_unchecked(&device_no) - 1;
42951
42952 /*
42953 * PCU-B devices, both GEN_1 and GEN_2 do not have OFN sensor
42954diff --git a/drivers/input/mouse/psmouse.h b/drivers/input/mouse/psmouse.h
42955index 2f0b39d..7370f13 100644
42956--- a/drivers/input/mouse/psmouse.h
42957+++ b/drivers/input/mouse/psmouse.h
42958@@ -116,7 +116,7 @@ struct psmouse_attribute {
42959 ssize_t (*set)(struct psmouse *psmouse, void *data,
42960 const char *buf, size_t count);
42961 bool protect;
42962-};
42963+} __do_const;
42964 #define to_psmouse_attr(a) container_of((a), struct psmouse_attribute, dattr)
42965
42966 ssize_t psmouse_attr_show_helper(struct device *dev, struct device_attribute *attr,
42967diff --git a/drivers/input/mousedev.c b/drivers/input/mousedev.c
42968index b604564..3f14ae4 100644
42969--- a/drivers/input/mousedev.c
42970+++ b/drivers/input/mousedev.c
42971@@ -744,7 +744,7 @@ static ssize_t mousedev_read(struct file *file, char __user *buffer,
42972
42973 spin_unlock_irq(&client->packet_lock);
42974
42975- if (copy_to_user(buffer, data, count))
42976+ if (count > sizeof(data) || copy_to_user(buffer, data, count))
42977 return -EFAULT;
42978
42979 return count;
42980diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
42981index b29134d..394deb0 100644
42982--- a/drivers/input/serio/serio.c
42983+++ b/drivers/input/serio/serio.c
42984@@ -514,7 +514,7 @@ static void serio_release_port(struct device *dev)
42985 */
42986 static void serio_init_port(struct serio *serio)
42987 {
42988- static atomic_t serio_no = ATOMIC_INIT(0);
42989+ static atomic_unchecked_t serio_no = ATOMIC_INIT(0);
42990
42991 __module_get(THIS_MODULE);
42992
42993@@ -525,7 +525,7 @@ static void serio_init_port(struct serio *serio)
42994 mutex_init(&serio->drv_mutex);
42995 device_initialize(&serio->dev);
42996 dev_set_name(&serio->dev, "serio%ld",
42997- (long)atomic_inc_return(&serio_no) - 1);
42998+ (long)atomic_inc_return_unchecked(&serio_no) - 1);
42999 serio->dev.bus = &serio_bus;
43000 serio->dev.release = serio_release_port;
43001 serio->dev.groups = serio_device_attr_groups;
43002diff --git a/drivers/input/serio/serio_raw.c b/drivers/input/serio/serio_raw.c
43003index c9a02fe..0debc75 100644
43004--- a/drivers/input/serio/serio_raw.c
43005+++ b/drivers/input/serio/serio_raw.c
43006@@ -292,7 +292,7 @@ static irqreturn_t serio_raw_interrupt(struct serio *serio, unsigned char data,
43007
43008 static int serio_raw_connect(struct serio *serio, struct serio_driver *drv)
43009 {
43010- static atomic_t serio_raw_no = ATOMIC_INIT(0);
43011+ static atomic_unchecked_t serio_raw_no = ATOMIC_INIT(0);
43012 struct serio_raw *serio_raw;
43013 int err;
43014
43015@@ -303,7 +303,7 @@ static int serio_raw_connect(struct serio *serio, struct serio_driver *drv)
43016 }
43017
43018 snprintf(serio_raw->name, sizeof(serio_raw->name),
43019- "serio_raw%ld", (long)atomic_inc_return(&serio_raw_no) - 1);
43020+ "serio_raw%ld", (long)atomic_inc_return_unchecked(&serio_raw_no) - 1);
43021 kref_init(&serio_raw->kref);
43022 INIT_LIST_HEAD(&serio_raw->client_list);
43023 init_waitqueue_head(&serio_raw->wait);
43024diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
43025index e5555fc..937986d 100644
43026--- a/drivers/iommu/iommu.c
43027+++ b/drivers/iommu/iommu.c
43028@@ -588,7 +588,7 @@ static struct notifier_block iommu_bus_nb = {
43029 static void iommu_bus_init(struct bus_type *bus, struct iommu_ops *ops)
43030 {
43031 bus_register_notifier(bus, &iommu_bus_nb);
43032- bus_for_each_dev(bus, NULL, ops, add_iommu_group);
43033+ bus_for_each_dev(bus, NULL, (void *)ops, add_iommu_group);
43034 }
43035
43036 /**
43037diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
43038index 228632c9..edfe331 100644
43039--- a/drivers/iommu/irq_remapping.c
43040+++ b/drivers/iommu/irq_remapping.c
43041@@ -356,7 +356,7 @@ int setup_hpet_msi_remapped(unsigned int irq, unsigned int id)
43042 void panic_if_irq_remap(const char *msg)
43043 {
43044 if (irq_remapping_enabled)
43045- panic(msg);
43046+ panic("%s", msg);
43047 }
43048
43049 static void ir_ack_apic_edge(struct irq_data *data)
43050@@ -377,10 +377,12 @@ static void ir_print_prefix(struct irq_data *data, struct seq_file *p)
43051
43052 void irq_remap_modify_chip_defaults(struct irq_chip *chip)
43053 {
43054- chip->irq_print_chip = ir_print_prefix;
43055- chip->irq_ack = ir_ack_apic_edge;
43056- chip->irq_eoi = ir_ack_apic_level;
43057- chip->irq_set_affinity = x86_io_apic_ops.set_affinity;
43058+ pax_open_kernel();
43059+ *(void **)&chip->irq_print_chip = ir_print_prefix;
43060+ *(void **)&chip->irq_ack = ir_ack_apic_edge;
43061+ *(void **)&chip->irq_eoi = ir_ack_apic_level;
43062+ *(void **)&chip->irq_set_affinity = x86_io_apic_ops.set_affinity;
43063+ pax_close_kernel();
43064 }
43065
43066 bool setup_remapped_irq(int irq, struct irq_cfg *cfg, struct irq_chip *chip)
43067diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
43068index 57d165e..611997e 100644
43069--- a/drivers/irqchip/irq-gic.c
43070+++ b/drivers/irqchip/irq-gic.c
43071@@ -84,7 +84,7 @@ static u8 gic_cpu_map[NR_GIC_CPU_IF] __read_mostly;
43072 * Supported arch specific GIC irq extension.
43073 * Default make them NULL.
43074 */
43075-struct irq_chip gic_arch_extn = {
43076+irq_chip_no_const gic_arch_extn = {
43077 .irq_eoi = NULL,
43078 .irq_mask = NULL,
43079 .irq_unmask = NULL,
43080@@ -336,7 +336,7 @@ static void gic_handle_cascade_irq(unsigned int irq, struct irq_desc *desc)
43081 chained_irq_exit(chip, desc);
43082 }
43083
43084-static struct irq_chip gic_chip = {
43085+static irq_chip_no_const gic_chip __read_only = {
43086 .name = "GIC",
43087 .irq_mask = gic_mask_irq,
43088 .irq_unmask = gic_unmask_irq,
43089diff --git a/drivers/irqchip/irq-renesas-irqc.c b/drivers/irqchip/irq-renesas-irqc.c
43090index 8777065..a4a9967 100644
43091--- a/drivers/irqchip/irq-renesas-irqc.c
43092+++ b/drivers/irqchip/irq-renesas-irqc.c
43093@@ -151,7 +151,7 @@ static int irqc_probe(struct platform_device *pdev)
43094 struct irqc_priv *p;
43095 struct resource *io;
43096 struct resource *irq;
43097- struct irq_chip *irq_chip;
43098+ irq_chip_no_const *irq_chip;
43099 const char *name = dev_name(&pdev->dev);
43100 int ret;
43101 int k;
43102diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c
43103index ac6f72b..81150f2 100644
43104--- a/drivers/isdn/capi/capi.c
43105+++ b/drivers/isdn/capi/capi.c
43106@@ -81,8 +81,8 @@ struct capiminor {
43107
43108 struct capi20_appl *ap;
43109 u32 ncci;
43110- atomic_t datahandle;
43111- atomic_t msgid;
43112+ atomic_unchecked_t datahandle;
43113+ atomic_unchecked_t msgid;
43114
43115 struct tty_port port;
43116 int ttyinstop;
43117@@ -391,7 +391,7 @@ gen_data_b3_resp_for(struct capiminor *mp, struct sk_buff *skb)
43118 capimsg_setu16(s, 2, mp->ap->applid);
43119 capimsg_setu8 (s, 4, CAPI_DATA_B3);
43120 capimsg_setu8 (s, 5, CAPI_RESP);
43121- capimsg_setu16(s, 6, atomic_inc_return(&mp->msgid));
43122+ capimsg_setu16(s, 6, atomic_inc_return_unchecked(&mp->msgid));
43123 capimsg_setu32(s, 8, mp->ncci);
43124 capimsg_setu16(s, 12, datahandle);
43125 }
43126@@ -512,14 +512,14 @@ static void handle_minor_send(struct capiminor *mp)
43127 mp->outbytes -= len;
43128 spin_unlock_bh(&mp->outlock);
43129
43130- datahandle = atomic_inc_return(&mp->datahandle);
43131+ datahandle = atomic_inc_return_unchecked(&mp->datahandle);
43132 skb_push(skb, CAPI_DATA_B3_REQ_LEN);
43133 memset(skb->data, 0, CAPI_DATA_B3_REQ_LEN);
43134 capimsg_setu16(skb->data, 0, CAPI_DATA_B3_REQ_LEN);
43135 capimsg_setu16(skb->data, 2, mp->ap->applid);
43136 capimsg_setu8 (skb->data, 4, CAPI_DATA_B3);
43137 capimsg_setu8 (skb->data, 5, CAPI_REQ);
43138- capimsg_setu16(skb->data, 6, atomic_inc_return(&mp->msgid));
43139+ capimsg_setu16(skb->data, 6, atomic_inc_return_unchecked(&mp->msgid));
43140 capimsg_setu32(skb->data, 8, mp->ncci); /* NCCI */
43141 capimsg_setu32(skb->data, 12, (u32)(long)skb->data);/* Data32 */
43142 capimsg_setu16(skb->data, 16, len); /* Data length */
43143diff --git a/drivers/isdn/gigaset/bas-gigaset.c b/drivers/isdn/gigaset/bas-gigaset.c
43144index c44950d..10ac276 100644
43145--- a/drivers/isdn/gigaset/bas-gigaset.c
43146+++ b/drivers/isdn/gigaset/bas-gigaset.c
43147@@ -2564,22 +2564,22 @@ static int gigaset_post_reset(struct usb_interface *intf)
43148
43149
43150 static const struct gigaset_ops gigops = {
43151- gigaset_write_cmd,
43152- gigaset_write_room,
43153- gigaset_chars_in_buffer,
43154- gigaset_brkchars,
43155- gigaset_init_bchannel,
43156- gigaset_close_bchannel,
43157- gigaset_initbcshw,
43158- gigaset_freebcshw,
43159- gigaset_reinitbcshw,
43160- gigaset_initcshw,
43161- gigaset_freecshw,
43162- gigaset_set_modem_ctrl,
43163- gigaset_baud_rate,
43164- gigaset_set_line_ctrl,
43165- gigaset_isoc_send_skb,
43166- gigaset_isoc_input,
43167+ .write_cmd = gigaset_write_cmd,
43168+ .write_room = gigaset_write_room,
43169+ .chars_in_buffer = gigaset_chars_in_buffer,
43170+ .brkchars = gigaset_brkchars,
43171+ .init_bchannel = gigaset_init_bchannel,
43172+ .close_bchannel = gigaset_close_bchannel,
43173+ .initbcshw = gigaset_initbcshw,
43174+ .freebcshw = gigaset_freebcshw,
43175+ .reinitbcshw = gigaset_reinitbcshw,
43176+ .initcshw = gigaset_initcshw,
43177+ .freecshw = gigaset_freecshw,
43178+ .set_modem_ctrl = gigaset_set_modem_ctrl,
43179+ .baud_rate = gigaset_baud_rate,
43180+ .set_line_ctrl = gigaset_set_line_ctrl,
43181+ .send_skb = gigaset_isoc_send_skb,
43182+ .handle_input = gigaset_isoc_input,
43183 };
43184
43185 /* bas_gigaset_init
43186diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c
43187index 600c79b..3752bab 100644
43188--- a/drivers/isdn/gigaset/interface.c
43189+++ b/drivers/isdn/gigaset/interface.c
43190@@ -130,9 +130,9 @@ static int if_open(struct tty_struct *tty, struct file *filp)
43191 }
43192 tty->driver_data = cs;
43193
43194- ++cs->port.count;
43195+ atomic_inc(&cs->port.count);
43196
43197- if (cs->port.count == 1) {
43198+ if (atomic_read(&cs->port.count) == 1) {
43199 tty_port_tty_set(&cs->port, tty);
43200 cs->port.low_latency = 1;
43201 }
43202@@ -156,9 +156,9 @@ static void if_close(struct tty_struct *tty, struct file *filp)
43203
43204 if (!cs->connected)
43205 gig_dbg(DEBUG_IF, "not connected"); /* nothing to do */
43206- else if (!cs->port.count)
43207+ else if (!atomic_read(&cs->port.count))
43208 dev_warn(cs->dev, "%s: device not opened\n", __func__);
43209- else if (!--cs->port.count)
43210+ else if (!atomic_dec_return(&cs->port.count))
43211 tty_port_tty_set(&cs->port, NULL);
43212
43213 mutex_unlock(&cs->mutex);
43214diff --git a/drivers/isdn/gigaset/ser-gigaset.c b/drivers/isdn/gigaset/ser-gigaset.c
43215index 8c91fd5..14f13ce 100644
43216--- a/drivers/isdn/gigaset/ser-gigaset.c
43217+++ b/drivers/isdn/gigaset/ser-gigaset.c
43218@@ -453,22 +453,22 @@ static int gigaset_set_line_ctrl(struct cardstate *cs, unsigned cflag)
43219 }
43220
43221 static const struct gigaset_ops ops = {
43222- gigaset_write_cmd,
43223- gigaset_write_room,
43224- gigaset_chars_in_buffer,
43225- gigaset_brkchars,
43226- gigaset_init_bchannel,
43227- gigaset_close_bchannel,
43228- gigaset_initbcshw,
43229- gigaset_freebcshw,
43230- gigaset_reinitbcshw,
43231- gigaset_initcshw,
43232- gigaset_freecshw,
43233- gigaset_set_modem_ctrl,
43234- gigaset_baud_rate,
43235- gigaset_set_line_ctrl,
43236- gigaset_m10x_send_skb, /* asyncdata.c */
43237- gigaset_m10x_input, /* asyncdata.c */
43238+ .write_cmd = gigaset_write_cmd,
43239+ .write_room = gigaset_write_room,
43240+ .chars_in_buffer = gigaset_chars_in_buffer,
43241+ .brkchars = gigaset_brkchars,
43242+ .init_bchannel = gigaset_init_bchannel,
43243+ .close_bchannel = gigaset_close_bchannel,
43244+ .initbcshw = gigaset_initbcshw,
43245+ .freebcshw = gigaset_freebcshw,
43246+ .reinitbcshw = gigaset_reinitbcshw,
43247+ .initcshw = gigaset_initcshw,
43248+ .freecshw = gigaset_freecshw,
43249+ .set_modem_ctrl = gigaset_set_modem_ctrl,
43250+ .baud_rate = gigaset_baud_rate,
43251+ .set_line_ctrl = gigaset_set_line_ctrl,
43252+ .send_skb = gigaset_m10x_send_skb, /* asyncdata.c */
43253+ .handle_input = gigaset_m10x_input, /* asyncdata.c */
43254 };
43255
43256
43257diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c
43258index d0a41cb..b953e50 100644
43259--- a/drivers/isdn/gigaset/usb-gigaset.c
43260+++ b/drivers/isdn/gigaset/usb-gigaset.c
43261@@ -547,7 +547,7 @@ static int gigaset_brkchars(struct cardstate *cs, const unsigned char buf[6])
43262 gigaset_dbg_buffer(DEBUG_USBREQ, "brkchars", 6, buf);
43263 memcpy(cs->hw.usb->bchars, buf, 6);
43264 return usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x19, 0x41,
43265- 0, 0, &buf, 6, 2000);
43266+ 0, 0, buf, 6, 2000);
43267 }
43268
43269 static void gigaset_freebcshw(struct bc_state *bcs)
43270@@ -869,22 +869,22 @@ static int gigaset_pre_reset(struct usb_interface *intf)
43271 }
43272
43273 static const struct gigaset_ops ops = {
43274- gigaset_write_cmd,
43275- gigaset_write_room,
43276- gigaset_chars_in_buffer,
43277- gigaset_brkchars,
43278- gigaset_init_bchannel,
43279- gigaset_close_bchannel,
43280- gigaset_initbcshw,
43281- gigaset_freebcshw,
43282- gigaset_reinitbcshw,
43283- gigaset_initcshw,
43284- gigaset_freecshw,
43285- gigaset_set_modem_ctrl,
43286- gigaset_baud_rate,
43287- gigaset_set_line_ctrl,
43288- gigaset_m10x_send_skb,
43289- gigaset_m10x_input,
43290+ .write_cmd = gigaset_write_cmd,
43291+ .write_room = gigaset_write_room,
43292+ .chars_in_buffer = gigaset_chars_in_buffer,
43293+ .brkchars = gigaset_brkchars,
43294+ .init_bchannel = gigaset_init_bchannel,
43295+ .close_bchannel = gigaset_close_bchannel,
43296+ .initbcshw = gigaset_initbcshw,
43297+ .freebcshw = gigaset_freebcshw,
43298+ .reinitbcshw = gigaset_reinitbcshw,
43299+ .initcshw = gigaset_initcshw,
43300+ .freecshw = gigaset_freecshw,
43301+ .set_modem_ctrl = gigaset_set_modem_ctrl,
43302+ .baud_rate = gigaset_baud_rate,
43303+ .set_line_ctrl = gigaset_set_line_ctrl,
43304+ .send_skb = gigaset_m10x_send_skb,
43305+ .handle_input = gigaset_m10x_input,
43306 };
43307
43308 /*
43309diff --git a/drivers/isdn/hardware/avm/b1.c b/drivers/isdn/hardware/avm/b1.c
43310index 4d9b195..455075c 100644
43311--- a/drivers/isdn/hardware/avm/b1.c
43312+++ b/drivers/isdn/hardware/avm/b1.c
43313@@ -176,7 +176,7 @@ int b1_load_t4file(avmcard *card, capiloaddatapart *t4file)
43314 }
43315 if (left) {
43316 if (t4file->user) {
43317- if (copy_from_user(buf, dp, left))
43318+ if (left > sizeof buf || copy_from_user(buf, dp, left))
43319 return -EFAULT;
43320 } else {
43321 memcpy(buf, dp, left);
43322@@ -224,7 +224,7 @@ int b1_load_config(avmcard *card, capiloaddatapart *config)
43323 }
43324 if (left) {
43325 if (config->user) {
43326- if (copy_from_user(buf, dp, left))
43327+ if (left > sizeof buf || copy_from_user(buf, dp, left))
43328 return -EFAULT;
43329 } else {
43330 memcpy(buf, dp, left);
43331diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c
43332index 9b856e1..fa03c92 100644
43333--- a/drivers/isdn/i4l/isdn_common.c
43334+++ b/drivers/isdn/i4l/isdn_common.c
43335@@ -1654,6 +1654,8 @@ isdn_ioctl(struct file *file, uint cmd, ulong arg)
43336 } else
43337 return -EINVAL;
43338 case IIOCDBGVAR:
43339+ if (!capable(CAP_SYS_RAWIO))
43340+ return -EPERM;
43341 if (arg) {
43342 if (copy_to_user(argp, &dev, sizeof(ulong)))
43343 return -EFAULT;
43344diff --git a/drivers/isdn/i4l/isdn_concap.c b/drivers/isdn/i4l/isdn_concap.c
43345index 91d5730..336523e 100644
43346--- a/drivers/isdn/i4l/isdn_concap.c
43347+++ b/drivers/isdn/i4l/isdn_concap.c
43348@@ -80,9 +80,9 @@ static int isdn_concap_dl_disconn_req(struct concap_proto *concap)
43349 }
43350
43351 struct concap_device_ops isdn_concap_reliable_dl_dops = {
43352- &isdn_concap_dl_data_req,
43353- &isdn_concap_dl_connect_req,
43354- &isdn_concap_dl_disconn_req
43355+ .data_req = &isdn_concap_dl_data_req,
43356+ .connect_req = &isdn_concap_dl_connect_req,
43357+ .disconn_req = &isdn_concap_dl_disconn_req
43358 };
43359
43360 /* The following should better go into a dedicated source file such that
43361diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c
43362index 3c5f249..5fac4d0 100644
43363--- a/drivers/isdn/i4l/isdn_tty.c
43364+++ b/drivers/isdn/i4l/isdn_tty.c
43365@@ -1508,9 +1508,9 @@ isdn_tty_open(struct tty_struct *tty, struct file *filp)
43366
43367 #ifdef ISDN_DEBUG_MODEM_OPEN
43368 printk(KERN_DEBUG "isdn_tty_open %s, count = %d\n", tty->name,
43369- port->count);
43370+ atomic_read(&port->count));
43371 #endif
43372- port->count++;
43373+ atomic_inc(&port->count);
43374 port->tty = tty;
43375 /*
43376 * Start up serial port
43377@@ -1554,7 +1554,7 @@ isdn_tty_close(struct tty_struct *tty, struct file *filp)
43378 #endif
43379 return;
43380 }
43381- if ((tty->count == 1) && (port->count != 1)) {
43382+ if ((tty->count == 1) && (atomic_read(&port->count) != 1)) {
43383 /*
43384 * Uh, oh. tty->count is 1, which means that the tty
43385 * structure will be freed. Info->count should always
43386@@ -1563,15 +1563,15 @@ isdn_tty_close(struct tty_struct *tty, struct file *filp)
43387 * serial port won't be shutdown.
43388 */
43389 printk(KERN_ERR "isdn_tty_close: bad port count; tty->count is 1, "
43390- "info->count is %d\n", port->count);
43391- port->count = 1;
43392+ "info->count is %d\n", atomic_read(&port->count));
43393+ atomic_set(&port->count, 1);
43394 }
43395- if (--port->count < 0) {
43396+ if (atomic_dec_return(&port->count) < 0) {
43397 printk(KERN_ERR "isdn_tty_close: bad port count for ttyi%d: %d\n",
43398- info->line, port->count);
43399- port->count = 0;
43400+ info->line, atomic_read(&port->count));
43401+ atomic_set(&port->count, 0);
43402 }
43403- if (port->count) {
43404+ if (atomic_read(&port->count)) {
43405 #ifdef ISDN_DEBUG_MODEM_OPEN
43406 printk(KERN_DEBUG "isdn_tty_close after info->count != 0\n");
43407 #endif
43408@@ -1625,7 +1625,7 @@ isdn_tty_hangup(struct tty_struct *tty)
43409 if (isdn_tty_paranoia_check(info, tty->name, "isdn_tty_hangup"))
43410 return;
43411 isdn_tty_shutdown(info);
43412- port->count = 0;
43413+ atomic_set(&port->count, 0);
43414 port->flags &= ~ASYNC_NORMAL_ACTIVE;
43415 port->tty = NULL;
43416 wake_up_interruptible(&port->open_wait);
43417@@ -1970,7 +1970,7 @@ isdn_tty_find_icall(int di, int ch, setup_parm *setup)
43418 for (i = 0; i < ISDN_MAX_CHANNELS; i++) {
43419 modem_info *info = &dev->mdm.info[i];
43420
43421- if (info->port.count == 0)
43422+ if (atomic_read(&info->port.count) == 0)
43423 continue;
43424 if ((info->emu.mdmreg[REG_SI1] & si2bit[si1]) && /* SI1 is matching */
43425 (info->emu.mdmreg[REG_SI2] == si2)) { /* SI2 is matching */
43426diff --git a/drivers/isdn/i4l/isdn_x25iface.c b/drivers/isdn/i4l/isdn_x25iface.c
43427index e2d4e58..40cd045 100644
43428--- a/drivers/isdn/i4l/isdn_x25iface.c
43429+++ b/drivers/isdn/i4l/isdn_x25iface.c
43430@@ -53,14 +53,14 @@ static int isdn_x25iface_disconn_ind(struct concap_proto *);
43431
43432
43433 static struct concap_proto_ops ix25_pops = {
43434- &isdn_x25iface_proto_new,
43435- &isdn_x25iface_proto_del,
43436- &isdn_x25iface_proto_restart,
43437- &isdn_x25iface_proto_close,
43438- &isdn_x25iface_xmit,
43439- &isdn_x25iface_receive,
43440- &isdn_x25iface_connect_ind,
43441- &isdn_x25iface_disconn_ind
43442+ .proto_new = &isdn_x25iface_proto_new,
43443+ .proto_del = &isdn_x25iface_proto_del,
43444+ .restart = &isdn_x25iface_proto_restart,
43445+ .close = &isdn_x25iface_proto_close,
43446+ .encap_and_xmit = &isdn_x25iface_xmit,
43447+ .data_ind = &isdn_x25iface_receive,
43448+ .connect_ind = &isdn_x25iface_connect_ind,
43449+ .disconn_ind = &isdn_x25iface_disconn_ind
43450 };
43451
43452 /* error message helper function */
43453diff --git a/drivers/isdn/icn/icn.c b/drivers/isdn/icn/icn.c
43454index 6a7447c..cae33fe 100644
43455--- a/drivers/isdn/icn/icn.c
43456+++ b/drivers/isdn/icn/icn.c
43457@@ -1045,7 +1045,7 @@ icn_writecmd(const u_char *buf, int len, int user, icn_card *card)
43458 if (count > len)
43459 count = len;
43460 if (user) {
43461- if (copy_from_user(msg, buf, count))
43462+ if (count > sizeof msg || copy_from_user(msg, buf, count))
43463 return -EFAULT;
43464 } else
43465 memcpy(msg, buf, count);
43466diff --git a/drivers/isdn/mISDN/dsp_cmx.c b/drivers/isdn/mISDN/dsp_cmx.c
43467index a4f05c5..1433bc5 100644
43468--- a/drivers/isdn/mISDN/dsp_cmx.c
43469+++ b/drivers/isdn/mISDN/dsp_cmx.c
43470@@ -1628,7 +1628,7 @@ unsigned long dsp_spl_jiffies; /* calculate the next time to fire */
43471 static u16 dsp_count; /* last sample count */
43472 static int dsp_count_valid; /* if we have last sample count */
43473
43474-void
43475+void __intentional_overflow(-1)
43476 dsp_cmx_send(void *arg)
43477 {
43478 struct dsp_conf *conf;
43479diff --git a/drivers/leds/leds-clevo-mail.c b/drivers/leds/leds-clevo-mail.c
43480index f58a354..fbae176 100644
43481--- a/drivers/leds/leds-clevo-mail.c
43482+++ b/drivers/leds/leds-clevo-mail.c
43483@@ -40,7 +40,7 @@ static int __init clevo_mail_led_dmi_callback(const struct dmi_system_id *id)
43484 * detected as working, but in reality it is not) as low as
43485 * possible.
43486 */
43487-static struct dmi_system_id clevo_mail_led_dmi_table[] __initdata = {
43488+static struct dmi_system_id clevo_mail_led_dmi_table[] __initconst = {
43489 {
43490 .callback = clevo_mail_led_dmi_callback,
43491 .ident = "Clevo D410J",
43492diff --git a/drivers/leds/leds-ss4200.c b/drivers/leds/leds-ss4200.c
43493index 2eb3ef6..295891f 100644
43494--- a/drivers/leds/leds-ss4200.c
43495+++ b/drivers/leds/leds-ss4200.c
43496@@ -91,7 +91,7 @@ MODULE_PARM_DESC(nodetect, "Skip DMI-based hardware detection");
43497 * detected as working, but in reality it is not) as low as
43498 * possible.
43499 */
43500-static struct dmi_system_id nas_led_whitelist[] __initdata = {
43501+static struct dmi_system_id nas_led_whitelist[] __initconst = {
43502 {
43503 .callback = ss4200_led_dmi_callback,
43504 .ident = "Intel SS4200-E",
43505diff --git a/drivers/lguest/core.c b/drivers/lguest/core.c
43506index 0bf1e4e..b4bf44e 100644
43507--- a/drivers/lguest/core.c
43508+++ b/drivers/lguest/core.c
43509@@ -97,9 +97,17 @@ static __init int map_switcher(void)
43510 * The end address needs +1 because __get_vm_area allocates an
43511 * extra guard page, so we need space for that.
43512 */
43513+
43514+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
43515+ switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE,
43516+ VM_ALLOC | VM_KERNEXEC, switcher_addr, switcher_addr
43517+ + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE);
43518+#else
43519 switcher_vma = __get_vm_area(TOTAL_SWITCHER_PAGES * PAGE_SIZE,
43520 VM_ALLOC, switcher_addr, switcher_addr
43521 + (TOTAL_SWITCHER_PAGES+1) * PAGE_SIZE);
43522+#endif
43523+
43524 if (!switcher_vma) {
43525 err = -ENOMEM;
43526 printk("lguest: could not map switcher pages high\n");
43527@@ -124,7 +132,7 @@ static __init int map_switcher(void)
43528 * Now the Switcher is mapped at the right address, we can't fail!
43529 * Copy in the compiled-in Switcher code (from x86/switcher_32.S).
43530 */
43531- memcpy(switcher_vma->addr, start_switcher_text,
43532+ memcpy(switcher_vma->addr, ktla_ktva(start_switcher_text),
43533 end_switcher_text - start_switcher_text);
43534
43535 printk(KERN_INFO "lguest: mapped switcher at %p\n",
43536diff --git a/drivers/lguest/page_tables.c b/drivers/lguest/page_tables.c
43537index e8b55c3..3514c37 100644
43538--- a/drivers/lguest/page_tables.c
43539+++ b/drivers/lguest/page_tables.c
43540@@ -559,7 +559,7 @@ void pin_page(struct lg_cpu *cpu, unsigned long vaddr)
43541 /*:*/
43542
43543 #ifdef CONFIG_X86_PAE
43544-static void release_pmd(pmd_t *spmd)
43545+static void __intentional_overflow(-1) release_pmd(pmd_t *spmd)
43546 {
43547 /* If the entry's not present, there's nothing to release. */
43548 if (pmd_flags(*spmd) & _PAGE_PRESENT) {
43549diff --git a/drivers/lguest/x86/core.c b/drivers/lguest/x86/core.c
43550index 922a1ac..9dd0c2a 100644
43551--- a/drivers/lguest/x86/core.c
43552+++ b/drivers/lguest/x86/core.c
43553@@ -59,7 +59,7 @@ static struct {
43554 /* Offset from where switcher.S was compiled to where we've copied it */
43555 static unsigned long switcher_offset(void)
43556 {
43557- return switcher_addr - (unsigned long)start_switcher_text;
43558+ return switcher_addr - (unsigned long)ktla_ktva(start_switcher_text);
43559 }
43560
43561 /* This cpu's struct lguest_pages (after the Switcher text page) */
43562@@ -99,7 +99,13 @@ static void copy_in_guest_info(struct lg_cpu *cpu, struct lguest_pages *pages)
43563 * These copies are pretty cheap, so we do them unconditionally: */
43564 /* Save the current Host top-level page directory.
43565 */
43566+
43567+#ifdef CONFIG_PAX_PER_CPU_PGD
43568+ pages->state.host_cr3 = read_cr3();
43569+#else
43570 pages->state.host_cr3 = __pa(current->mm->pgd);
43571+#endif
43572+
43573 /*
43574 * Set up the Guest's page tables to see this CPU's pages (and no
43575 * other CPU's pages).
43576@@ -477,7 +483,7 @@ void __init lguest_arch_host_init(void)
43577 * compiled-in switcher code and the high-mapped copy we just made.
43578 */
43579 for (i = 0; i < IDT_ENTRIES; i++)
43580- default_idt_entries[i] += switcher_offset();
43581+ default_idt_entries[i] = ktla_ktva(default_idt_entries[i]) + switcher_offset();
43582
43583 /*
43584 * Set up the Switcher's per-cpu areas.
43585@@ -560,7 +566,7 @@ void __init lguest_arch_host_init(void)
43586 * it will be undisturbed when we switch. To change %cs and jump we
43587 * need this structure to feed to Intel's "lcall" instruction.
43588 */
43589- lguest_entry.offset = (long)switch_to_guest + switcher_offset();
43590+ lguest_entry.offset = (long)ktla_ktva(switch_to_guest) + switcher_offset();
43591 lguest_entry.segment = LGUEST_CS;
43592
43593 /*
43594diff --git a/drivers/lguest/x86/switcher_32.S b/drivers/lguest/x86/switcher_32.S
43595index 40634b0..4f5855e 100644
43596--- a/drivers/lguest/x86/switcher_32.S
43597+++ b/drivers/lguest/x86/switcher_32.S
43598@@ -87,6 +87,7 @@
43599 #include <asm/page.h>
43600 #include <asm/segment.h>
43601 #include <asm/lguest.h>
43602+#include <asm/processor-flags.h>
43603
43604 // We mark the start of the code to copy
43605 // It's placed in .text tho it's never run here
43606@@ -149,6 +150,13 @@ ENTRY(switch_to_guest)
43607 // Changes type when we load it: damn Intel!
43608 // For after we switch over our page tables
43609 // That entry will be read-only: we'd crash.
43610+
43611+#ifdef CONFIG_PAX_KERNEXEC
43612+ mov %cr0, %edx
43613+ xor $X86_CR0_WP, %edx
43614+ mov %edx, %cr0
43615+#endif
43616+
43617 movl $(GDT_ENTRY_TSS*8), %edx
43618 ltr %dx
43619
43620@@ -157,9 +165,15 @@ ENTRY(switch_to_guest)
43621 // Let's clear it again for our return.
43622 // The GDT descriptor of the Host
43623 // Points to the table after two "size" bytes
43624- movl (LGUEST_PAGES_host_gdt_desc+2)(%eax), %edx
43625+ movl (LGUEST_PAGES_host_gdt_desc+2)(%eax), %eax
43626 // Clear "used" from type field (byte 5, bit 2)
43627- andb $0xFD, (GDT_ENTRY_TSS*8 + 5)(%edx)
43628+ andb $0xFD, (GDT_ENTRY_TSS*8 + 5)(%eax)
43629+
43630+#ifdef CONFIG_PAX_KERNEXEC
43631+ mov %cr0, %eax
43632+ xor $X86_CR0_WP, %eax
43633+ mov %eax, %cr0
43634+#endif
43635
43636 // Once our page table's switched, the Guest is live!
43637 // The Host fades as we run this final step.
43638@@ -295,13 +309,12 @@ deliver_to_host:
43639 // I consulted gcc, and it gave
43640 // These instructions, which I gladly credit:
43641 leal (%edx,%ebx,8), %eax
43642- movzwl (%eax),%edx
43643- movl 4(%eax), %eax
43644- xorw %ax, %ax
43645- orl %eax, %edx
43646+ movl 4(%eax), %edx
43647+ movw (%eax), %dx
43648 // Now the address of the handler's in %edx
43649 // We call it now: its "iret" drops us home.
43650- jmp *%edx
43651+ ljmp $__KERNEL_CS, $1f
43652+1: jmp *%edx
43653
43654 // Every interrupt can come to us here
43655 // But we must truly tell each apart.
43656diff --git a/drivers/md/bcache/closure.h b/drivers/md/bcache/closure.h
43657index 7ef7461..5a09dac 100644
43658--- a/drivers/md/bcache/closure.h
43659+++ b/drivers/md/bcache/closure.h
43660@@ -238,7 +238,7 @@ static inline void closure_set_stopped(struct closure *cl)
43661 static inline void set_closure_fn(struct closure *cl, closure_fn *fn,
43662 struct workqueue_struct *wq)
43663 {
43664- BUG_ON(object_is_on_stack(cl));
43665+ BUG_ON(object_starts_on_stack(cl));
43666 closure_set_ip(cl);
43667 cl->fn = fn;
43668 cl->wq = wq;
43669diff --git a/drivers/md/bitmap.c b/drivers/md/bitmap.c
43670index 9a8e66a..10cc762 100644
43671--- a/drivers/md/bitmap.c
43672+++ b/drivers/md/bitmap.c
43673@@ -1779,7 +1779,7 @@ void bitmap_status(struct seq_file *seq, struct bitmap *bitmap)
43674 chunk_kb ? "KB" : "B");
43675 if (bitmap->storage.file) {
43676 seq_printf(seq, ", file: ");
43677- seq_path(seq, &bitmap->storage.file->f_path, " \t\n");
43678+ seq_path(seq, &bitmap->storage.file->f_path, " \t\n\\");
43679 }
43680
43681 seq_printf(seq, "\n");
43682diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c
43683index 5152142..623d141 100644
43684--- a/drivers/md/dm-ioctl.c
43685+++ b/drivers/md/dm-ioctl.c
43686@@ -1769,7 +1769,7 @@ static int validate_params(uint cmd, struct dm_ioctl *param)
43687 cmd == DM_LIST_VERSIONS_CMD)
43688 return 0;
43689
43690- if ((cmd == DM_DEV_CREATE_CMD)) {
43691+ if (cmd == DM_DEV_CREATE_CMD) {
43692 if (!*param->name) {
43693 DMWARN("name not supplied when creating device");
43694 return -EINVAL;
43695diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c
43696index 7dfdb5c..4caada6 100644
43697--- a/drivers/md/dm-raid1.c
43698+++ b/drivers/md/dm-raid1.c
43699@@ -40,7 +40,7 @@ enum dm_raid1_error {
43700
43701 struct mirror {
43702 struct mirror_set *ms;
43703- atomic_t error_count;
43704+ atomic_unchecked_t error_count;
43705 unsigned long error_type;
43706 struct dm_dev *dev;
43707 sector_t offset;
43708@@ -186,7 +186,7 @@ static struct mirror *get_valid_mirror(struct mirror_set *ms)
43709 struct mirror *m;
43710
43711 for (m = ms->mirror; m < ms->mirror + ms->nr_mirrors; m++)
43712- if (!atomic_read(&m->error_count))
43713+ if (!atomic_read_unchecked(&m->error_count))
43714 return m;
43715
43716 return NULL;
43717@@ -218,7 +218,7 @@ static void fail_mirror(struct mirror *m, enum dm_raid1_error error_type)
43718 * simple way to tell if a device has encountered
43719 * errors.
43720 */
43721- atomic_inc(&m->error_count);
43722+ atomic_inc_unchecked(&m->error_count);
43723
43724 if (test_and_set_bit(error_type, &m->error_type))
43725 return;
43726@@ -409,7 +409,7 @@ static struct mirror *choose_mirror(struct mirror_set *ms, sector_t sector)
43727 struct mirror *m = get_default_mirror(ms);
43728
43729 do {
43730- if (likely(!atomic_read(&m->error_count)))
43731+ if (likely(!atomic_read_unchecked(&m->error_count)))
43732 return m;
43733
43734 if (m-- == ms->mirror)
43735@@ -423,7 +423,7 @@ static int default_ok(struct mirror *m)
43736 {
43737 struct mirror *default_mirror = get_default_mirror(m->ms);
43738
43739- return !atomic_read(&default_mirror->error_count);
43740+ return !atomic_read_unchecked(&default_mirror->error_count);
43741 }
43742
43743 static int mirror_available(struct mirror_set *ms, struct bio *bio)
43744@@ -560,7 +560,7 @@ static void do_reads(struct mirror_set *ms, struct bio_list *reads)
43745 */
43746 if (likely(region_in_sync(ms, region, 1)))
43747 m = choose_mirror(ms, bio->bi_iter.bi_sector);
43748- else if (m && atomic_read(&m->error_count))
43749+ else if (m && atomic_read_unchecked(&m->error_count))
43750 m = NULL;
43751
43752 if (likely(m))
43753@@ -927,7 +927,7 @@ static int get_mirror(struct mirror_set *ms, struct dm_target *ti,
43754 }
43755
43756 ms->mirror[mirror].ms = ms;
43757- atomic_set(&(ms->mirror[mirror].error_count), 0);
43758+ atomic_set_unchecked(&(ms->mirror[mirror].error_count), 0);
43759 ms->mirror[mirror].error_type = 0;
43760 ms->mirror[mirror].offset = offset;
43761
43762@@ -1342,7 +1342,7 @@ static void mirror_resume(struct dm_target *ti)
43763 */
43764 static char device_status_char(struct mirror *m)
43765 {
43766- if (!atomic_read(&(m->error_count)))
43767+ if (!atomic_read_unchecked(&(m->error_count)))
43768 return 'A';
43769
43770 return (test_bit(DM_RAID1_FLUSH_ERROR, &(m->error_type))) ? 'F' :
43771diff --git a/drivers/md/dm-stats.c b/drivers/md/dm-stats.c
43772index 28a9012..9c0f6a5 100644
43773--- a/drivers/md/dm-stats.c
43774+++ b/drivers/md/dm-stats.c
43775@@ -382,7 +382,7 @@ do_sync_free:
43776 synchronize_rcu_expedited();
43777 dm_stat_free(&s->rcu_head);
43778 } else {
43779- ACCESS_ONCE(dm_stat_need_rcu_barrier) = 1;
43780+ ACCESS_ONCE_RW(dm_stat_need_rcu_barrier) = 1;
43781 call_rcu(&s->rcu_head, dm_stat_free);
43782 }
43783 return 0;
43784@@ -554,8 +554,8 @@ void dm_stats_account_io(struct dm_stats *stats, unsigned long bi_rw,
43785 ((bi_rw & (REQ_WRITE | REQ_DISCARD)) ==
43786 (ACCESS_ONCE(last->last_rw) & (REQ_WRITE | REQ_DISCARD)))
43787 ));
43788- ACCESS_ONCE(last->last_sector) = end_sector;
43789- ACCESS_ONCE(last->last_rw) = bi_rw;
43790+ ACCESS_ONCE_RW(last->last_sector) = end_sector;
43791+ ACCESS_ONCE_RW(last->last_rw) = bi_rw;
43792 }
43793
43794 rcu_read_lock();
43795diff --git a/drivers/md/dm-stripe.c b/drivers/md/dm-stripe.c
43796index d1600d2..4c3af3a 100644
43797--- a/drivers/md/dm-stripe.c
43798+++ b/drivers/md/dm-stripe.c
43799@@ -21,7 +21,7 @@ struct stripe {
43800 struct dm_dev *dev;
43801 sector_t physical_start;
43802
43803- atomic_t error_count;
43804+ atomic_unchecked_t error_count;
43805 };
43806
43807 struct stripe_c {
43808@@ -186,7 +186,7 @@ static int stripe_ctr(struct dm_target *ti, unsigned int argc, char **argv)
43809 kfree(sc);
43810 return r;
43811 }
43812- atomic_set(&(sc->stripe[i].error_count), 0);
43813+ atomic_set_unchecked(&(sc->stripe[i].error_count), 0);
43814 }
43815
43816 ti->private = sc;
43817@@ -330,7 +330,7 @@ static void stripe_status(struct dm_target *ti, status_type_t type,
43818 DMEMIT("%d ", sc->stripes);
43819 for (i = 0; i < sc->stripes; i++) {
43820 DMEMIT("%s ", sc->stripe[i].dev->name);
43821- buffer[i] = atomic_read(&(sc->stripe[i].error_count)) ?
43822+ buffer[i] = atomic_read_unchecked(&(sc->stripe[i].error_count)) ?
43823 'D' : 'A';
43824 }
43825 buffer[i] = '\0';
43826@@ -375,8 +375,8 @@ static int stripe_end_io(struct dm_target *ti, struct bio *bio, int error)
43827 */
43828 for (i = 0; i < sc->stripes; i++)
43829 if (!strcmp(sc->stripe[i].dev->name, major_minor)) {
43830- atomic_inc(&(sc->stripe[i].error_count));
43831- if (atomic_read(&(sc->stripe[i].error_count)) <
43832+ atomic_inc_unchecked(&(sc->stripe[i].error_count));
43833+ if (atomic_read_unchecked(&(sc->stripe[i].error_count)) <
43834 DM_IO_ERROR_THRESHOLD)
43835 schedule_work(&sc->trigger_event);
43836 }
43837diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
43838index 50601ec..6d3b9dc 100644
43839--- a/drivers/md/dm-table.c
43840+++ b/drivers/md/dm-table.c
43841@@ -274,7 +274,7 @@ static struct dm_dev_internal *find_device(struct list_head *l, dev_t dev)
43842 static int open_dev(struct dm_dev_internal *d, dev_t dev,
43843 struct mapped_device *md)
43844 {
43845- static char *_claim_ptr = "I belong to device-mapper";
43846+ static char _claim_ptr[] = "I belong to device-mapper";
43847 struct block_device *bdev;
43848
43849 int r;
43850@@ -342,7 +342,7 @@ static int device_area_is_invalid(struct dm_target *ti, struct dm_dev *dev,
43851 if (!dev_size)
43852 return 0;
43853
43854- if ((start >= dev_size) || (start + len > dev_size)) {
43855+ if ((start >= dev_size) || (len > dev_size - start)) {
43856 DMWARN("%s: %s too small for target: "
43857 "start=%llu, len=%llu, dev_size=%llu",
43858 dm_device_name(ti->table->md), bdevname(bdev, b),
43859diff --git a/drivers/md/dm-thin-metadata.c b/drivers/md/dm-thin-metadata.c
43860index b086a94..74cb67e 100644
43861--- a/drivers/md/dm-thin-metadata.c
43862+++ b/drivers/md/dm-thin-metadata.c
43863@@ -404,7 +404,7 @@ static void __setup_btree_details(struct dm_pool_metadata *pmd)
43864 {
43865 pmd->info.tm = pmd->tm;
43866 pmd->info.levels = 2;
43867- pmd->info.value_type.context = pmd->data_sm;
43868+ pmd->info.value_type.context = (dm_space_map_no_const *)pmd->data_sm;
43869 pmd->info.value_type.size = sizeof(__le64);
43870 pmd->info.value_type.inc = data_block_inc;
43871 pmd->info.value_type.dec = data_block_dec;
43872@@ -423,7 +423,7 @@ static void __setup_btree_details(struct dm_pool_metadata *pmd)
43873
43874 pmd->bl_info.tm = pmd->tm;
43875 pmd->bl_info.levels = 1;
43876- pmd->bl_info.value_type.context = pmd->data_sm;
43877+ pmd->bl_info.value_type.context = (dm_space_map_no_const *)pmd->data_sm;
43878 pmd->bl_info.value_type.size = sizeof(__le64);
43879 pmd->bl_info.value_type.inc = data_block_inc;
43880 pmd->bl_info.value_type.dec = data_block_dec;
43881diff --git a/drivers/md/dm.c b/drivers/md/dm.c
43882index 455e649..1f214be 100644
43883--- a/drivers/md/dm.c
43884+++ b/drivers/md/dm.c
43885@@ -178,9 +178,9 @@ struct mapped_device {
43886 /*
43887 * Event handling.
43888 */
43889- atomic_t event_nr;
43890+ atomic_unchecked_t event_nr;
43891 wait_queue_head_t eventq;
43892- atomic_t uevent_seq;
43893+ atomic_unchecked_t uevent_seq;
43894 struct list_head uevent_list;
43895 spinlock_t uevent_lock; /* Protect access to uevent_list */
43896
43897@@ -1884,8 +1884,8 @@ static struct mapped_device *alloc_dev(int minor)
43898 spin_lock_init(&md->deferred_lock);
43899 atomic_set(&md->holders, 1);
43900 atomic_set(&md->open_count, 0);
43901- atomic_set(&md->event_nr, 0);
43902- atomic_set(&md->uevent_seq, 0);
43903+ atomic_set_unchecked(&md->event_nr, 0);
43904+ atomic_set_unchecked(&md->uevent_seq, 0);
43905 INIT_LIST_HEAD(&md->uevent_list);
43906 spin_lock_init(&md->uevent_lock);
43907
43908@@ -2039,7 +2039,7 @@ static void event_callback(void *context)
43909
43910 dm_send_uevents(&uevents, &disk_to_dev(md->disk)->kobj);
43911
43912- atomic_inc(&md->event_nr);
43913+ atomic_inc_unchecked(&md->event_nr);
43914 wake_up(&md->eventq);
43915 }
43916
43917@@ -2732,18 +2732,18 @@ int dm_kobject_uevent(struct mapped_device *md, enum kobject_action action,
43918
43919 uint32_t dm_next_uevent_seq(struct mapped_device *md)
43920 {
43921- return atomic_add_return(1, &md->uevent_seq);
43922+ return atomic_add_return_unchecked(1, &md->uevent_seq);
43923 }
43924
43925 uint32_t dm_get_event_nr(struct mapped_device *md)
43926 {
43927- return atomic_read(&md->event_nr);
43928+ return atomic_read_unchecked(&md->event_nr);
43929 }
43930
43931 int dm_wait_event(struct mapped_device *md, int event_nr)
43932 {
43933 return wait_event_interruptible(md->eventq,
43934- (event_nr != atomic_read(&md->event_nr)));
43935+ (event_nr != atomic_read_unchecked(&md->event_nr)));
43936 }
43937
43938 void dm_uevent_add(struct mapped_device *md, struct list_head *elist)
43939diff --git a/drivers/md/md.c b/drivers/md/md.c
43940index 2382cfc..0d7e551 100644
43941--- a/drivers/md/md.c
43942+++ b/drivers/md/md.c
43943@@ -194,10 +194,10 @@ EXPORT_SYMBOL_GPL(bio_clone_mddev);
43944 * start build, activate spare
43945 */
43946 static DECLARE_WAIT_QUEUE_HEAD(md_event_waiters);
43947-static atomic_t md_event_count;
43948+static atomic_unchecked_t md_event_count;
43949 void md_new_event(struct mddev *mddev)
43950 {
43951- atomic_inc(&md_event_count);
43952+ atomic_inc_unchecked(&md_event_count);
43953 wake_up(&md_event_waiters);
43954 }
43955 EXPORT_SYMBOL_GPL(md_new_event);
43956@@ -207,7 +207,7 @@ EXPORT_SYMBOL_GPL(md_new_event);
43957 */
43958 static void md_new_event_inintr(struct mddev *mddev)
43959 {
43960- atomic_inc(&md_event_count);
43961+ atomic_inc_unchecked(&md_event_count);
43962 wake_up(&md_event_waiters);
43963 }
43964
43965@@ -1462,7 +1462,7 @@ static int super_1_load(struct md_rdev *rdev, struct md_rdev *refdev, int minor_
43966 if ((le32_to_cpu(sb->feature_map) & MD_FEATURE_RESHAPE_ACTIVE) &&
43967 (le32_to_cpu(sb->feature_map) & MD_FEATURE_NEW_OFFSET))
43968 rdev->new_data_offset += (s32)le32_to_cpu(sb->new_offset);
43969- atomic_set(&rdev->corrected_errors, le32_to_cpu(sb->cnt_corrected_read));
43970+ atomic_set_unchecked(&rdev->corrected_errors, le32_to_cpu(sb->cnt_corrected_read));
43971
43972 rdev->sb_size = le32_to_cpu(sb->max_dev) * 2 + 256;
43973 bmask = queue_logical_block_size(rdev->bdev->bd_disk->queue)-1;
43974@@ -1713,7 +1713,7 @@ static void super_1_sync(struct mddev *mddev, struct md_rdev *rdev)
43975 else
43976 sb->resync_offset = cpu_to_le64(0);
43977
43978- sb->cnt_corrected_read = cpu_to_le32(atomic_read(&rdev->corrected_errors));
43979+ sb->cnt_corrected_read = cpu_to_le32(atomic_read_unchecked(&rdev->corrected_errors));
43980
43981 sb->raid_disks = cpu_to_le32(mddev->raid_disks);
43982 sb->size = cpu_to_le64(mddev->dev_sectors);
43983@@ -2725,7 +2725,7 @@ __ATTR(state, S_IRUGO|S_IWUSR, state_show, state_store);
43984 static ssize_t
43985 errors_show(struct md_rdev *rdev, char *page)
43986 {
43987- return sprintf(page, "%d\n", atomic_read(&rdev->corrected_errors));
43988+ return sprintf(page, "%d\n", atomic_read_unchecked(&rdev->corrected_errors));
43989 }
43990
43991 static ssize_t
43992@@ -2734,7 +2734,7 @@ errors_store(struct md_rdev *rdev, const char *buf, size_t len)
43993 char *e;
43994 unsigned long n = simple_strtoul(buf, &e, 10);
43995 if (*buf && (*e == 0 || *e == '\n')) {
43996- atomic_set(&rdev->corrected_errors, n);
43997+ atomic_set_unchecked(&rdev->corrected_errors, n);
43998 return len;
43999 }
44000 return -EINVAL;
44001@@ -3183,8 +3183,8 @@ int md_rdev_init(struct md_rdev *rdev)
44002 rdev->sb_loaded = 0;
44003 rdev->bb_page = NULL;
44004 atomic_set(&rdev->nr_pending, 0);
44005- atomic_set(&rdev->read_errors, 0);
44006- atomic_set(&rdev->corrected_errors, 0);
44007+ atomic_set_unchecked(&rdev->read_errors, 0);
44008+ atomic_set_unchecked(&rdev->corrected_errors, 0);
44009
44010 INIT_LIST_HEAD(&rdev->same_set);
44011 init_waitqueue_head(&rdev->blocked_wait);
44012@@ -7058,7 +7058,7 @@ static int md_seq_show(struct seq_file *seq, void *v)
44013
44014 spin_unlock(&pers_lock);
44015 seq_printf(seq, "\n");
44016- seq->poll_event = atomic_read(&md_event_count);
44017+ seq->poll_event = atomic_read_unchecked(&md_event_count);
44018 return 0;
44019 }
44020 if (v == (void*)2) {
44021@@ -7161,7 +7161,7 @@ static int md_seq_open(struct inode *inode, struct file *file)
44022 return error;
44023
44024 seq = file->private_data;
44025- seq->poll_event = atomic_read(&md_event_count);
44026+ seq->poll_event = atomic_read_unchecked(&md_event_count);
44027 return error;
44028 }
44029
44030@@ -7178,7 +7178,7 @@ static unsigned int mdstat_poll(struct file *filp, poll_table *wait)
44031 /* always allow read */
44032 mask = POLLIN | POLLRDNORM;
44033
44034- if (seq->poll_event != atomic_read(&md_event_count))
44035+ if (seq->poll_event != atomic_read_unchecked(&md_event_count))
44036 mask |= POLLERR | POLLPRI;
44037 return mask;
44038 }
44039@@ -7222,7 +7222,7 @@ static int is_mddev_idle(struct mddev *mddev, int init)
44040 struct gendisk *disk = rdev->bdev->bd_contains->bd_disk;
44041 curr_events = (int)part_stat_read(&disk->part0, sectors[0]) +
44042 (int)part_stat_read(&disk->part0, sectors[1]) -
44043- atomic_read(&disk->sync_io);
44044+ atomic_read_unchecked(&disk->sync_io);
44045 /* sync IO will cause sync_io to increase before the disk_stats
44046 * as sync_io is counted when a request starts, and
44047 * disk_stats is counted when it completes.
44048diff --git a/drivers/md/md.h b/drivers/md/md.h
44049index a49d991..3582bb7 100644
44050--- a/drivers/md/md.h
44051+++ b/drivers/md/md.h
44052@@ -94,13 +94,13 @@ struct md_rdev {
44053 * only maintained for arrays that
44054 * support hot removal
44055 */
44056- atomic_t read_errors; /* number of consecutive read errors that
44057+ atomic_unchecked_t read_errors; /* number of consecutive read errors that
44058 * we have tried to ignore.
44059 */
44060 struct timespec last_read_error; /* monotonic time since our
44061 * last read error
44062 */
44063- atomic_t corrected_errors; /* number of corrected read errors,
44064+ atomic_unchecked_t corrected_errors; /* number of corrected read errors,
44065 * for reporting to userspace and storing
44066 * in superblock.
44067 */
44068@@ -449,7 +449,7 @@ static inline void rdev_dec_pending(struct md_rdev *rdev, struct mddev *mddev)
44069
44070 static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sectors)
44071 {
44072- atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io);
44073+ atomic_add_unchecked(nr_sectors, &bdev->bd_contains->bd_disk->sync_io);
44074 }
44075
44076 struct md_personality
44077diff --git a/drivers/md/persistent-data/dm-space-map-metadata.c b/drivers/md/persistent-data/dm-space-map-metadata.c
44078index 786b689..ea8c956 100644
44079--- a/drivers/md/persistent-data/dm-space-map-metadata.c
44080+++ b/drivers/md/persistent-data/dm-space-map-metadata.c
44081@@ -679,7 +679,7 @@ static int sm_metadata_extend(struct dm_space_map *sm, dm_block_t extra_blocks)
44082 * Flick into a mode where all blocks get allocated in the new area.
44083 */
44084 smm->begin = old_len;
44085- memcpy(sm, &bootstrap_ops, sizeof(*sm));
44086+ memcpy((void *)sm, &bootstrap_ops, sizeof(*sm));
44087
44088 /*
44089 * Extend.
44090@@ -710,7 +710,7 @@ out:
44091 /*
44092 * Switch back to normal behaviour.
44093 */
44094- memcpy(sm, &ops, sizeof(*sm));
44095+ memcpy((void *)sm, &ops, sizeof(*sm));
44096 return r;
44097 }
44098
44099diff --git a/drivers/md/persistent-data/dm-space-map.h b/drivers/md/persistent-data/dm-space-map.h
44100index 3e6d115..ffecdeb 100644
44101--- a/drivers/md/persistent-data/dm-space-map.h
44102+++ b/drivers/md/persistent-data/dm-space-map.h
44103@@ -71,6 +71,7 @@ struct dm_space_map {
44104 dm_sm_threshold_fn fn,
44105 void *context);
44106 };
44107+typedef struct dm_space_map __no_const dm_space_map_no_const;
44108
44109 /*----------------------------------------------------------------*/
44110
44111diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
44112index 56e24c0..e1c8e1f 100644
44113--- a/drivers/md/raid1.c
44114+++ b/drivers/md/raid1.c
44115@@ -1931,7 +1931,7 @@ static int fix_sync_read_error(struct r1bio *r1_bio)
44116 if (r1_sync_page_io(rdev, sect, s,
44117 bio->bi_io_vec[idx].bv_page,
44118 READ) != 0)
44119- atomic_add(s, &rdev->corrected_errors);
44120+ atomic_add_unchecked(s, &rdev->corrected_errors);
44121 }
44122 sectors -= s;
44123 sect += s;
44124@@ -2165,7 +2165,7 @@ static void fix_read_error(struct r1conf *conf, int read_disk,
44125 test_bit(In_sync, &rdev->flags)) {
44126 if (r1_sync_page_io(rdev, sect, s,
44127 conf->tmppage, READ)) {
44128- atomic_add(s, &rdev->corrected_errors);
44129+ atomic_add_unchecked(s, &rdev->corrected_errors);
44130 printk(KERN_INFO
44131 "md/raid1:%s: read error corrected "
44132 "(%d sectors at %llu on %s)\n",
44133diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
44134index cb882aa..9bd076e 100644
44135--- a/drivers/md/raid10.c
44136+++ b/drivers/md/raid10.c
44137@@ -1949,7 +1949,7 @@ static void end_sync_read(struct bio *bio, int error)
44138 /* The write handler will notice the lack of
44139 * R10BIO_Uptodate and record any errors etc
44140 */
44141- atomic_add(r10_bio->sectors,
44142+ atomic_add_unchecked(r10_bio->sectors,
44143 &conf->mirrors[d].rdev->corrected_errors);
44144
44145 /* for reconstruct, we always reschedule after a read.
44146@@ -2307,7 +2307,7 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev)
44147 {
44148 struct timespec cur_time_mon;
44149 unsigned long hours_since_last;
44150- unsigned int read_errors = atomic_read(&rdev->read_errors);
44151+ unsigned int read_errors = atomic_read_unchecked(&rdev->read_errors);
44152
44153 ktime_get_ts(&cur_time_mon);
44154
44155@@ -2329,9 +2329,9 @@ static void check_decay_read_errors(struct mddev *mddev, struct md_rdev *rdev)
44156 * overflowing the shift of read_errors by hours_since_last.
44157 */
44158 if (hours_since_last >= 8 * sizeof(read_errors))
44159- atomic_set(&rdev->read_errors, 0);
44160+ atomic_set_unchecked(&rdev->read_errors, 0);
44161 else
44162- atomic_set(&rdev->read_errors, read_errors >> hours_since_last);
44163+ atomic_set_unchecked(&rdev->read_errors, read_errors >> hours_since_last);
44164 }
44165
44166 static int r10_sync_page_io(struct md_rdev *rdev, sector_t sector,
44167@@ -2385,8 +2385,8 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
44168 return;
44169
44170 check_decay_read_errors(mddev, rdev);
44171- atomic_inc(&rdev->read_errors);
44172- if (atomic_read(&rdev->read_errors) > max_read_errors) {
44173+ atomic_inc_unchecked(&rdev->read_errors);
44174+ if (atomic_read_unchecked(&rdev->read_errors) > max_read_errors) {
44175 char b[BDEVNAME_SIZE];
44176 bdevname(rdev->bdev, b);
44177
44178@@ -2394,7 +2394,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
44179 "md/raid10:%s: %s: Raid device exceeded "
44180 "read_error threshold [cur %d:max %d]\n",
44181 mdname(mddev), b,
44182- atomic_read(&rdev->read_errors), max_read_errors);
44183+ atomic_read_unchecked(&rdev->read_errors), max_read_errors);
44184 printk(KERN_NOTICE
44185 "md/raid10:%s: %s: Failing raid device\n",
44186 mdname(mddev), b);
44187@@ -2549,7 +2549,7 @@ static void fix_read_error(struct r10conf *conf, struct mddev *mddev, struct r10
44188 sect +
44189 choose_data_offset(r10_bio, rdev)),
44190 bdevname(rdev->bdev, b));
44191- atomic_add(s, &rdev->corrected_errors);
44192+ atomic_add_unchecked(s, &rdev->corrected_errors);
44193 }
44194
44195 rdev_dec_pending(rdev, mddev);
44196diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
44197index ad1b9be..b417412 100644
44198--- a/drivers/md/raid5.c
44199+++ b/drivers/md/raid5.c
44200@@ -1702,6 +1702,10 @@ static int grow_one_stripe(struct r5conf *conf, int hash)
44201 return 1;
44202 }
44203
44204+#ifdef CONFIG_GRKERNSEC_HIDESYM
44205+static atomic_unchecked_t raid5_cache_id = ATOMIC_INIT(0);
44206+#endif
44207+
44208 static int grow_stripes(struct r5conf *conf, int num)
44209 {
44210 struct kmem_cache *sc;
44211@@ -1713,7 +1717,11 @@ static int grow_stripes(struct r5conf *conf, int num)
44212 "raid%d-%s", conf->level, mdname(conf->mddev));
44213 else
44214 sprintf(conf->cache_name[0],
44215+#ifdef CONFIG_GRKERNSEC_HIDESYM
44216+ "raid%d-%08lx", conf->level, atomic_inc_return_unchecked(&raid5_cache_id));
44217+#else
44218 "raid%d-%p", conf->level, conf->mddev);
44219+#endif
44220 sprintf(conf->cache_name[1], "%s-alt", conf->cache_name[0]);
44221
44222 conf->active_name = 0;
44223@@ -1986,21 +1994,21 @@ static void raid5_end_read_request(struct bio * bi, int error)
44224 mdname(conf->mddev), STRIPE_SECTORS,
44225 (unsigned long long)s,
44226 bdevname(rdev->bdev, b));
44227- atomic_add(STRIPE_SECTORS, &rdev->corrected_errors);
44228+ atomic_add_unchecked(STRIPE_SECTORS, &rdev->corrected_errors);
44229 clear_bit(R5_ReadError, &sh->dev[i].flags);
44230 clear_bit(R5_ReWrite, &sh->dev[i].flags);
44231 } else if (test_bit(R5_ReadNoMerge, &sh->dev[i].flags))
44232 clear_bit(R5_ReadNoMerge, &sh->dev[i].flags);
44233
44234- if (atomic_read(&rdev->read_errors))
44235- atomic_set(&rdev->read_errors, 0);
44236+ if (atomic_read_unchecked(&rdev->read_errors))
44237+ atomic_set_unchecked(&rdev->read_errors, 0);
44238 } else {
44239 const char *bdn = bdevname(rdev->bdev, b);
44240 int retry = 0;
44241 int set_bad = 0;
44242
44243 clear_bit(R5_UPTODATE, &sh->dev[i].flags);
44244- atomic_inc(&rdev->read_errors);
44245+ atomic_inc_unchecked(&rdev->read_errors);
44246 if (test_bit(R5_ReadRepl, &sh->dev[i].flags))
44247 printk_ratelimited(
44248 KERN_WARNING
44249@@ -2028,7 +2036,7 @@ static void raid5_end_read_request(struct bio * bi, int error)
44250 mdname(conf->mddev),
44251 (unsigned long long)s,
44252 bdn);
44253- } else if (atomic_read(&rdev->read_errors)
44254+ } else if (atomic_read_unchecked(&rdev->read_errors)
44255 > conf->max_nr_stripes)
44256 printk(KERN_WARNING
44257 "md/raid:%s: Too many read errors, failing device %s.\n",
44258diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
44259index 983db75..ef9248c 100644
44260--- a/drivers/media/dvb-core/dvbdev.c
44261+++ b/drivers/media/dvb-core/dvbdev.c
44262@@ -185,7 +185,7 @@ int dvb_register_device(struct dvb_adapter *adap, struct dvb_device **pdvbdev,
44263 const struct dvb_device *template, void *priv, int type)
44264 {
44265 struct dvb_device *dvbdev;
44266- struct file_operations *dvbdevfops;
44267+ file_operations_no_const *dvbdevfops;
44268 struct device *clsdev;
44269 int minor;
44270 int id;
44271diff --git a/drivers/media/dvb-frontends/af9033.h b/drivers/media/dvb-frontends/af9033.h
44272index 539f4db..cdd403b 100644
44273--- a/drivers/media/dvb-frontends/af9033.h
44274+++ b/drivers/media/dvb-frontends/af9033.h
44275@@ -82,7 +82,7 @@ struct af9033_ops {
44276 int (*pid_filter_ctrl)(struct dvb_frontend *fe, int onoff);
44277 int (*pid_filter)(struct dvb_frontend *fe, int index, u16 pid,
44278 int onoff);
44279-};
44280+} __no_const;
44281
44282
44283 #if IS_ENABLED(CONFIG_DVB_AF9033)
44284diff --git a/drivers/media/dvb-frontends/dib3000.h b/drivers/media/dvb-frontends/dib3000.h
44285index 9b6c3bb..baeb5c7 100644
44286--- a/drivers/media/dvb-frontends/dib3000.h
44287+++ b/drivers/media/dvb-frontends/dib3000.h
44288@@ -39,7 +39,7 @@ struct dib_fe_xfer_ops
44289 int (*fifo_ctrl)(struct dvb_frontend *fe, int onoff);
44290 int (*pid_ctrl)(struct dvb_frontend *fe, int index, int pid, int onoff);
44291 int (*tuner_pass_ctrl)(struct dvb_frontend *fe, int onoff, u8 pll_ctrl);
44292-};
44293+} __no_const;
44294
44295 #if IS_ENABLED(CONFIG_DVB_DIB3000MB)
44296 extern struct dvb_frontend* dib3000mb_attach(const struct dib3000_config* config,
44297diff --git a/drivers/media/pci/cx88/cx88-video.c b/drivers/media/pci/cx88/cx88-video.c
44298index ed8cb90..5ef7f79 100644
44299--- a/drivers/media/pci/cx88/cx88-video.c
44300+++ b/drivers/media/pci/cx88/cx88-video.c
44301@@ -50,9 +50,9 @@ MODULE_VERSION(CX88_VERSION);
44302
44303 /* ------------------------------------------------------------------ */
44304
44305-static unsigned int video_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
44306-static unsigned int vbi_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
44307-static unsigned int radio_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
44308+static int video_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
44309+static int vbi_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
44310+static int radio_nr[] = {[0 ... (CX88_MAXBOARDS - 1)] = UNSET };
44311
44312 module_param_array(video_nr, int, NULL, 0444);
44313 module_param_array(vbi_nr, int, NULL, 0444);
44314diff --git a/drivers/media/pci/ivtv/ivtv-driver.c b/drivers/media/pci/ivtv/ivtv-driver.c
44315index 802642d..5534900 100644
44316--- a/drivers/media/pci/ivtv/ivtv-driver.c
44317+++ b/drivers/media/pci/ivtv/ivtv-driver.c
44318@@ -83,7 +83,7 @@ static struct pci_device_id ivtv_pci_tbl[] = {
44319 MODULE_DEVICE_TABLE(pci,ivtv_pci_tbl);
44320
44321 /* ivtv instance counter */
44322-static atomic_t ivtv_instance = ATOMIC_INIT(0);
44323+static atomic_unchecked_t ivtv_instance = ATOMIC_INIT(0);
44324
44325 /* Parameter declarations */
44326 static int cardtype[IVTV_MAX_CARDS];
44327diff --git a/drivers/media/platform/omap/omap_vout.c b/drivers/media/platform/omap/omap_vout.c
44328index 9a726ea..f5e9b52 100644
44329--- a/drivers/media/platform/omap/omap_vout.c
44330+++ b/drivers/media/platform/omap/omap_vout.c
44331@@ -63,7 +63,6 @@ enum omap_vout_channels {
44332 OMAP_VIDEO2,
44333 };
44334
44335-static struct videobuf_queue_ops video_vbq_ops;
44336 /* Variables configurable through module params*/
44337 static u32 video1_numbuffers = 3;
44338 static u32 video2_numbuffers = 3;
44339@@ -1015,6 +1014,12 @@ static int omap_vout_open(struct file *file)
44340 {
44341 struct videobuf_queue *q;
44342 struct omap_vout_device *vout = NULL;
44343+ static struct videobuf_queue_ops video_vbq_ops = {
44344+ .buf_setup = omap_vout_buffer_setup,
44345+ .buf_prepare = omap_vout_buffer_prepare,
44346+ .buf_release = omap_vout_buffer_release,
44347+ .buf_queue = omap_vout_buffer_queue,
44348+ };
44349
44350 vout = video_drvdata(file);
44351 v4l2_dbg(1, debug, &vout->vid_dev->v4l2_dev, "Entering %s\n", __func__);
44352@@ -1032,10 +1037,6 @@ static int omap_vout_open(struct file *file)
44353 vout->type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
44354
44355 q = &vout->vbq;
44356- video_vbq_ops.buf_setup = omap_vout_buffer_setup;
44357- video_vbq_ops.buf_prepare = omap_vout_buffer_prepare;
44358- video_vbq_ops.buf_release = omap_vout_buffer_release;
44359- video_vbq_ops.buf_queue = omap_vout_buffer_queue;
44360 spin_lock_init(&vout->vbq_lock);
44361
44362 videobuf_queue_dma_contig_init(q, &video_vbq_ops, q->dev,
44363diff --git a/drivers/media/platform/s5p-tv/mixer.h b/drivers/media/platform/s5p-tv/mixer.h
44364index fb2acc5..a2fcbdc4 100644
44365--- a/drivers/media/platform/s5p-tv/mixer.h
44366+++ b/drivers/media/platform/s5p-tv/mixer.h
44367@@ -156,7 +156,7 @@ struct mxr_layer {
44368 /** layer index (unique identifier) */
44369 int idx;
44370 /** callbacks for layer methods */
44371- struct mxr_layer_ops ops;
44372+ struct mxr_layer_ops *ops;
44373 /** format array */
44374 const struct mxr_format **fmt_array;
44375 /** size of format array */
44376diff --git a/drivers/media/platform/s5p-tv/mixer_grp_layer.c b/drivers/media/platform/s5p-tv/mixer_grp_layer.c
44377index 74344c7..a39e70e 100644
44378--- a/drivers/media/platform/s5p-tv/mixer_grp_layer.c
44379+++ b/drivers/media/platform/s5p-tv/mixer_grp_layer.c
44380@@ -235,7 +235,7 @@ struct mxr_layer *mxr_graph_layer_create(struct mxr_device *mdev, int idx)
44381 {
44382 struct mxr_layer *layer;
44383 int ret;
44384- struct mxr_layer_ops ops = {
44385+ static struct mxr_layer_ops ops = {
44386 .release = mxr_graph_layer_release,
44387 .buffer_set = mxr_graph_buffer_set,
44388 .stream_set = mxr_graph_stream_set,
44389diff --git a/drivers/media/platform/s5p-tv/mixer_reg.c b/drivers/media/platform/s5p-tv/mixer_reg.c
44390index b713403..53cb5ad 100644
44391--- a/drivers/media/platform/s5p-tv/mixer_reg.c
44392+++ b/drivers/media/platform/s5p-tv/mixer_reg.c
44393@@ -276,7 +276,7 @@ static void mxr_irq_layer_handle(struct mxr_layer *layer)
44394 layer->update_buf = next;
44395 }
44396
44397- layer->ops.buffer_set(layer, layer->update_buf);
44398+ layer->ops->buffer_set(layer, layer->update_buf);
44399
44400 if (done && done != layer->shadow_buf)
44401 vb2_buffer_done(&done->vb, VB2_BUF_STATE_DONE);
44402diff --git a/drivers/media/platform/s5p-tv/mixer_video.c b/drivers/media/platform/s5p-tv/mixer_video.c
44403index a1ce55f..4a3c4d9 100644
44404--- a/drivers/media/platform/s5p-tv/mixer_video.c
44405+++ b/drivers/media/platform/s5p-tv/mixer_video.c
44406@@ -210,7 +210,7 @@ static void mxr_layer_default_geo(struct mxr_layer *layer)
44407 layer->geo.src.height = layer->geo.src.full_height;
44408
44409 mxr_geometry_dump(mdev, &layer->geo);
44410- layer->ops.fix_geometry(layer, MXR_GEOMETRY_SINK, 0);
44411+ layer->ops->fix_geometry(layer, MXR_GEOMETRY_SINK, 0);
44412 mxr_geometry_dump(mdev, &layer->geo);
44413 }
44414
44415@@ -228,7 +228,7 @@ static void mxr_layer_update_output(struct mxr_layer *layer)
44416 layer->geo.dst.full_width = mbus_fmt.width;
44417 layer->geo.dst.full_height = mbus_fmt.height;
44418 layer->geo.dst.field = mbus_fmt.field;
44419- layer->ops.fix_geometry(layer, MXR_GEOMETRY_SINK, 0);
44420+ layer->ops->fix_geometry(layer, MXR_GEOMETRY_SINK, 0);
44421
44422 mxr_geometry_dump(mdev, &layer->geo);
44423 }
44424@@ -334,7 +334,7 @@ static int mxr_s_fmt(struct file *file, void *priv,
44425 /* set source size to highest accepted value */
44426 geo->src.full_width = max(geo->dst.full_width, pix->width);
44427 geo->src.full_height = max(geo->dst.full_height, pix->height);
44428- layer->ops.fix_geometry(layer, MXR_GEOMETRY_SOURCE, 0);
44429+ layer->ops->fix_geometry(layer, MXR_GEOMETRY_SOURCE, 0);
44430 mxr_geometry_dump(mdev, &layer->geo);
44431 /* set cropping to total visible screen */
44432 geo->src.width = pix->width;
44433@@ -342,12 +342,12 @@ static int mxr_s_fmt(struct file *file, void *priv,
44434 geo->src.x_offset = 0;
44435 geo->src.y_offset = 0;
44436 /* assure consistency of geometry */
44437- layer->ops.fix_geometry(layer, MXR_GEOMETRY_CROP, MXR_NO_OFFSET);
44438+ layer->ops->fix_geometry(layer, MXR_GEOMETRY_CROP, MXR_NO_OFFSET);
44439 mxr_geometry_dump(mdev, &layer->geo);
44440 /* set full size to lowest possible value */
44441 geo->src.full_width = 0;
44442 geo->src.full_height = 0;
44443- layer->ops.fix_geometry(layer, MXR_GEOMETRY_SOURCE, 0);
44444+ layer->ops->fix_geometry(layer, MXR_GEOMETRY_SOURCE, 0);
44445 mxr_geometry_dump(mdev, &layer->geo);
44446
44447 /* returning results */
44448@@ -474,7 +474,7 @@ static int mxr_s_selection(struct file *file, void *fh,
44449 target->width = s->r.width;
44450 target->height = s->r.height;
44451
44452- layer->ops.fix_geometry(layer, stage, s->flags);
44453+ layer->ops->fix_geometry(layer, stage, s->flags);
44454
44455 /* retrieve update selection rectangle */
44456 res.left = target->x_offset;
44457@@ -950,13 +950,13 @@ static int start_streaming(struct vb2_queue *vq, unsigned int count)
44458 mxr_output_get(mdev);
44459
44460 mxr_layer_update_output(layer);
44461- layer->ops.format_set(layer);
44462+ layer->ops->format_set(layer);
44463 /* enabling layer in hardware */
44464 spin_lock_irqsave(&layer->enq_slock, flags);
44465 layer->state = MXR_LAYER_STREAMING;
44466 spin_unlock_irqrestore(&layer->enq_slock, flags);
44467
44468- layer->ops.stream_set(layer, MXR_ENABLE);
44469+ layer->ops->stream_set(layer, MXR_ENABLE);
44470 mxr_streamer_get(mdev);
44471
44472 return 0;
44473@@ -1026,7 +1026,7 @@ static int stop_streaming(struct vb2_queue *vq)
44474 spin_unlock_irqrestore(&layer->enq_slock, flags);
44475
44476 /* disabling layer in hardware */
44477- layer->ops.stream_set(layer, MXR_DISABLE);
44478+ layer->ops->stream_set(layer, MXR_DISABLE);
44479 /* remove one streamer */
44480 mxr_streamer_put(mdev);
44481 /* allow changes in output configuration */
44482@@ -1065,8 +1065,8 @@ void mxr_base_layer_unregister(struct mxr_layer *layer)
44483
44484 void mxr_layer_release(struct mxr_layer *layer)
44485 {
44486- if (layer->ops.release)
44487- layer->ops.release(layer);
44488+ if (layer->ops->release)
44489+ layer->ops->release(layer);
44490 }
44491
44492 void mxr_base_layer_release(struct mxr_layer *layer)
44493@@ -1092,7 +1092,7 @@ struct mxr_layer *mxr_base_layer_create(struct mxr_device *mdev,
44494
44495 layer->mdev = mdev;
44496 layer->idx = idx;
44497- layer->ops = *ops;
44498+ layer->ops = ops;
44499
44500 spin_lock_init(&layer->enq_slock);
44501 INIT_LIST_HEAD(&layer->enq_list);
44502diff --git a/drivers/media/platform/s5p-tv/mixer_vp_layer.c b/drivers/media/platform/s5p-tv/mixer_vp_layer.c
44503index c9388c4..ce71ece 100644
44504--- a/drivers/media/platform/s5p-tv/mixer_vp_layer.c
44505+++ b/drivers/media/platform/s5p-tv/mixer_vp_layer.c
44506@@ -206,7 +206,7 @@ struct mxr_layer *mxr_vp_layer_create(struct mxr_device *mdev, int idx)
44507 {
44508 struct mxr_layer *layer;
44509 int ret;
44510- struct mxr_layer_ops ops = {
44511+ static struct mxr_layer_ops ops = {
44512 .release = mxr_vp_layer_release,
44513 .buffer_set = mxr_vp_buffer_set,
44514 .stream_set = mxr_vp_stream_set,
44515diff --git a/drivers/media/platform/vivi.c b/drivers/media/platform/vivi.c
44516index 3890f4f..b5c7511 100644
44517--- a/drivers/media/platform/vivi.c
44518+++ b/drivers/media/platform/vivi.c
44519@@ -58,8 +58,8 @@ MODULE_AUTHOR("Mauro Carvalho Chehab, Ted Walther and John Sokol");
44520 MODULE_LICENSE("Dual BSD/GPL");
44521 MODULE_VERSION(VIVI_VERSION);
44522
44523-static unsigned video_nr = -1;
44524-module_param(video_nr, uint, 0644);
44525+static int video_nr = -1;
44526+module_param(video_nr, int, 0644);
44527 MODULE_PARM_DESC(video_nr, "videoX start number, -1 is autodetect");
44528
44529 static unsigned n_devs = 1;
44530diff --git a/drivers/media/radio/radio-cadet.c b/drivers/media/radio/radio-cadet.c
44531index d719e59..63f3470 100644
44532--- a/drivers/media/radio/radio-cadet.c
44533+++ b/drivers/media/radio/radio-cadet.c
44534@@ -333,6 +333,8 @@ static ssize_t cadet_read(struct file *file, char __user *data, size_t count, lo
44535 unsigned char readbuf[RDS_BUFFER];
44536 int i = 0;
44537
44538+ if (count > RDS_BUFFER)
44539+ return -EFAULT;
44540 mutex_lock(&dev->lock);
44541 if (dev->rdsstat == 0)
44542 cadet_start_rds(dev);
44543@@ -349,8 +351,9 @@ static ssize_t cadet_read(struct file *file, char __user *data, size_t count, lo
44544 readbuf[i++] = dev->rdsbuf[dev->rdsout++];
44545 mutex_unlock(&dev->lock);
44546
44547- if (i && copy_to_user(data, readbuf, i))
44548- return -EFAULT;
44549+ if (i > sizeof(readbuf) || (i && copy_to_user(data, readbuf, i)))
44550+ i = -EFAULT;
44551+
44552 return i;
44553 }
44554
44555diff --git a/drivers/media/radio/radio-maxiradio.c b/drivers/media/radio/radio-maxiradio.c
44556index 5236035..c622c74 100644
44557--- a/drivers/media/radio/radio-maxiradio.c
44558+++ b/drivers/media/radio/radio-maxiradio.c
44559@@ -61,7 +61,7 @@ MODULE_PARM_DESC(radio_nr, "Radio device number");
44560 /* TEA5757 pin mappings */
44561 static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16;
44562
44563-static atomic_t maxiradio_instance = ATOMIC_INIT(0);
44564+static atomic_unchecked_t maxiradio_instance = ATOMIC_INIT(0);
44565
44566 #define PCI_VENDOR_ID_GUILLEMOT 0x5046
44567 #define PCI_DEVICE_ID_GUILLEMOT_MAXIRADIO 0x1001
44568diff --git a/drivers/media/radio/radio-shark.c b/drivers/media/radio/radio-shark.c
44569index 050b3bb..79f62b9 100644
44570--- a/drivers/media/radio/radio-shark.c
44571+++ b/drivers/media/radio/radio-shark.c
44572@@ -79,7 +79,7 @@ struct shark_device {
44573 u32 last_val;
44574 };
44575
44576-static atomic_t shark_instance = ATOMIC_INIT(0);
44577+static atomic_unchecked_t shark_instance = ATOMIC_INIT(0);
44578
44579 static void shark_write_val(struct snd_tea575x *tea, u32 val)
44580 {
44581diff --git a/drivers/media/radio/radio-shark2.c b/drivers/media/radio/radio-shark2.c
44582index 8654e0d..0608a64 100644
44583--- a/drivers/media/radio/radio-shark2.c
44584+++ b/drivers/media/radio/radio-shark2.c
44585@@ -74,7 +74,7 @@ struct shark_device {
44586 u8 *transfer_buffer;
44587 };
44588
44589-static atomic_t shark_instance = ATOMIC_INIT(0);
44590+static atomic_unchecked_t shark_instance = ATOMIC_INIT(0);
44591
44592 static int shark_write_reg(struct radio_tea5777 *tea, u64 reg)
44593 {
44594diff --git a/drivers/media/radio/radio-si476x.c b/drivers/media/radio/radio-si476x.c
44595index 2fd9009..278cc1e 100644
44596--- a/drivers/media/radio/radio-si476x.c
44597+++ b/drivers/media/radio/radio-si476x.c
44598@@ -1445,7 +1445,7 @@ static int si476x_radio_probe(struct platform_device *pdev)
44599 struct si476x_radio *radio;
44600 struct v4l2_ctrl *ctrl;
44601
44602- static atomic_t instance = ATOMIC_INIT(0);
44603+ static atomic_unchecked_t instance = ATOMIC_INIT(0);
44604
44605 radio = devm_kzalloc(&pdev->dev, sizeof(*radio), GFP_KERNEL);
44606 if (!radio)
44607diff --git a/drivers/media/usb/dvb-usb/cxusb.c b/drivers/media/usb/dvb-usb/cxusb.c
44608index a1c641e..3007da9 100644
44609--- a/drivers/media/usb/dvb-usb/cxusb.c
44610+++ b/drivers/media/usb/dvb-usb/cxusb.c
44611@@ -1112,7 +1112,7 @@ static struct dib0070_config dib7070p_dib0070_config = {
44612
44613 struct dib0700_adapter_state {
44614 int (*set_param_save) (struct dvb_frontend *);
44615-};
44616+} __no_const;
44617
44618 static int dib7070_set_param_override(struct dvb_frontend *fe)
44619 {
44620diff --git a/drivers/media/usb/dvb-usb/dw2102.c b/drivers/media/usb/dvb-usb/dw2102.c
44621index ae0f56a..ec71784 100644
44622--- a/drivers/media/usb/dvb-usb/dw2102.c
44623+++ b/drivers/media/usb/dvb-usb/dw2102.c
44624@@ -118,7 +118,7 @@ struct su3000_state {
44625
44626 struct s6x0_state {
44627 int (*old_set_voltage)(struct dvb_frontend *f, fe_sec_voltage_t v);
44628-};
44629+} __no_const;
44630
44631 /* debug */
44632 static int dvb_usb_dw2102_debug;
44633diff --git a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
44634index 7e2411c..cef73ca 100644
44635--- a/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
44636+++ b/drivers/media/v4l2-core/v4l2-compat-ioctl32.c
44637@@ -328,7 +328,7 @@ struct v4l2_buffer32 {
44638 __u32 reserved;
44639 };
44640
44641-static int get_v4l2_plane32(struct v4l2_plane *up, struct v4l2_plane32 *up32,
44642+static int get_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32,
44643 enum v4l2_memory memory)
44644 {
44645 void __user *up_pln;
44646@@ -357,7 +357,7 @@ static int get_v4l2_plane32(struct v4l2_plane *up, struct v4l2_plane32 *up32,
44647 return 0;
44648 }
44649
44650-static int put_v4l2_plane32(struct v4l2_plane *up, struct v4l2_plane32 *up32,
44651+static int put_v4l2_plane32(struct v4l2_plane __user *up, struct v4l2_plane32 __user *up32,
44652 enum v4l2_memory memory)
44653 {
44654 if (copy_in_user(up32, up, 2 * sizeof(__u32)) ||
44655@@ -427,7 +427,7 @@ static int get_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
44656 * by passing a very big num_planes value */
44657 uplane = compat_alloc_user_space(num_planes *
44658 sizeof(struct v4l2_plane));
44659- kp->m.planes = uplane;
44660+ kp->m.planes = (struct v4l2_plane __force_kernel *)uplane;
44661
44662 while (--num_planes >= 0) {
44663 ret = get_v4l2_plane32(uplane, uplane32, kp->memory);
44664@@ -498,7 +498,7 @@ static int put_v4l2_buffer32(struct v4l2_buffer *kp, struct v4l2_buffer32 __user
44665 if (num_planes == 0)
44666 return 0;
44667
44668- uplane = kp->m.planes;
44669+ uplane = (struct v4l2_plane __force_user *)kp->m.planes;
44670 if (get_user(p, &up->m.planes))
44671 return -EFAULT;
44672 uplane32 = compat_ptr(p);
44673@@ -552,7 +552,7 @@ static int get_v4l2_framebuffer32(struct v4l2_framebuffer *kp, struct v4l2_frame
44674 get_user(kp->capability, &up->capability) ||
44675 get_user(kp->flags, &up->flags))
44676 return -EFAULT;
44677- kp->base = compat_ptr(tmp);
44678+ kp->base = (void __force_kernel *)compat_ptr(tmp);
44679 get_v4l2_pix_format(&kp->fmt, &up->fmt);
44680 return 0;
44681 }
44682@@ -658,7 +658,7 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext
44683 n * sizeof(struct v4l2_ext_control32)))
44684 return -EFAULT;
44685 kcontrols = compat_alloc_user_space(n * sizeof(struct v4l2_ext_control));
44686- kp->controls = kcontrols;
44687+ kp->controls = (struct v4l2_ext_control __force_kernel *)kcontrols;
44688 while (--n >= 0) {
44689 if (copy_in_user(kcontrols, ucontrols, sizeof(*ucontrols)))
44690 return -EFAULT;
44691@@ -680,7 +680,7 @@ static int get_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext
44692 static int put_v4l2_ext_controls32(struct v4l2_ext_controls *kp, struct v4l2_ext_controls32 __user *up)
44693 {
44694 struct v4l2_ext_control32 __user *ucontrols;
44695- struct v4l2_ext_control __user *kcontrols = kp->controls;
44696+ struct v4l2_ext_control __user *kcontrols = (struct v4l2_ext_control __force_user *)kp->controls;
44697 int n = kp->count;
44698 compat_caddr_t p;
44699
44700@@ -774,7 +774,7 @@ static int put_v4l2_edid32(struct v4l2_edid *kp, struct v4l2_edid32 __user *up)
44701 put_user(kp->start_block, &up->start_block) ||
44702 put_user(kp->blocks, &up->blocks) ||
44703 put_user(tmp, &up->edid) ||
44704- copy_to_user(kp->reserved, up->reserved, sizeof(kp->reserved)))
44705+ copy_to_user(up->reserved, kp->reserved, sizeof(kp->reserved)))
44706 return -EFAULT;
44707 return 0;
44708 }
44709diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c
44710index 55c6832..a91c7a6 100644
44711--- a/drivers/media/v4l2-core/v4l2-ctrls.c
44712+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
44713@@ -1431,8 +1431,8 @@ static int validate_new(const struct v4l2_ctrl *ctrl,
44714 return 0;
44715
44716 case V4L2_CTRL_TYPE_STRING:
44717- len = strlen(c->string);
44718- if (len < ctrl->minimum)
44719+ len = strlen_user(c->string);
44720+ if (!len || len < ctrl->minimum)
44721 return -ERANGE;
44722 if ((len - ctrl->minimum) % ctrl->step)
44723 return -ERANGE;
44724diff --git a/drivers/media/v4l2-core/v4l2-device.c b/drivers/media/v4l2-core/v4l2-device.c
44725index 02d1b63..5fd6b16 100644
44726--- a/drivers/media/v4l2-core/v4l2-device.c
44727+++ b/drivers/media/v4l2-core/v4l2-device.c
44728@@ -75,9 +75,9 @@ int v4l2_device_put(struct v4l2_device *v4l2_dev)
44729 EXPORT_SYMBOL_GPL(v4l2_device_put);
44730
44731 int v4l2_device_set_name(struct v4l2_device *v4l2_dev, const char *basename,
44732- atomic_t *instance)
44733+ atomic_unchecked_t *instance)
44734 {
44735- int num = atomic_inc_return(instance) - 1;
44736+ int num = atomic_inc_return_unchecked(instance) - 1;
44737 int len = strlen(basename);
44738
44739 if (basename[len - 1] >= '0' && basename[len - 1] <= '9')
44740diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c
44741index d9113cc..7de6ccc 100644
44742--- a/drivers/media/v4l2-core/v4l2-ioctl.c
44743+++ b/drivers/media/v4l2-core/v4l2-ioctl.c
44744@@ -2003,7 +2003,8 @@ struct v4l2_ioctl_info {
44745 struct file *file, void *fh, void *p);
44746 } u;
44747 void (*debug)(const void *arg, bool write_only);
44748-};
44749+} __do_const;
44750+typedef struct v4l2_ioctl_info __no_const v4l2_ioctl_info_no_const;
44751
44752 /* This control needs a priority check */
44753 #define INFO_FL_PRIO (1 << 0)
44754@@ -2186,7 +2187,7 @@ static long __video_do_ioctl(struct file *file,
44755 struct video_device *vfd = video_devdata(file);
44756 const struct v4l2_ioctl_ops *ops = vfd->ioctl_ops;
44757 bool write_only = false;
44758- struct v4l2_ioctl_info default_info;
44759+ v4l2_ioctl_info_no_const default_info;
44760 const struct v4l2_ioctl_info *info;
44761 void *fh = file->private_data;
44762 struct v4l2_fh *vfh = NULL;
44763@@ -2260,7 +2261,7 @@ done:
44764 }
44765
44766 static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
44767- void * __user *user_ptr, void ***kernel_ptr)
44768+ void __user **user_ptr, void ***kernel_ptr)
44769 {
44770 int ret = 0;
44771
44772@@ -2276,7 +2277,7 @@ static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
44773 ret = -EINVAL;
44774 break;
44775 }
44776- *user_ptr = (void __user *)buf->m.planes;
44777+ *user_ptr = (void __force_user *)buf->m.planes;
44778 *kernel_ptr = (void *)&buf->m.planes;
44779 *array_size = sizeof(struct v4l2_plane) * buf->length;
44780 ret = 1;
44781@@ -2311,7 +2312,7 @@ static int check_array_args(unsigned int cmd, void *parg, size_t *array_size,
44782 ret = -EINVAL;
44783 break;
44784 }
44785- *user_ptr = (void __user *)ctrls->controls;
44786+ *user_ptr = (void __force_user *)ctrls->controls;
44787 *kernel_ptr = (void *)&ctrls->controls;
44788 *array_size = sizeof(struct v4l2_ext_control)
44789 * ctrls->count;
44790@@ -2412,7 +2413,7 @@ video_usercopy(struct file *file, unsigned int cmd, unsigned long arg,
44791 }
44792
44793 if (has_array_args) {
44794- *kernel_ptr = user_ptr;
44795+ *kernel_ptr = (void __force_kernel *)user_ptr;
44796 if (copy_to_user(user_ptr, mbuf, array_size))
44797 err = -EFAULT;
44798 goto out_array_args;
44799diff --git a/drivers/message/fusion/mptbase.c b/drivers/message/fusion/mptbase.c
44800index 570b18a..f880314 100644
44801--- a/drivers/message/fusion/mptbase.c
44802+++ b/drivers/message/fusion/mptbase.c
44803@@ -6755,8 +6755,13 @@ static int mpt_iocinfo_proc_show(struct seq_file *m, void *v)
44804 seq_printf(m, " MaxChainDepth = 0x%02x frames\n", ioc->facts.MaxChainDepth);
44805 seq_printf(m, " MinBlockSize = 0x%02x bytes\n", 4*ioc->facts.BlockSize);
44806
44807+#ifdef CONFIG_GRKERNSEC_HIDESYM
44808+ seq_printf(m, " RequestFrames @ 0x%p (Dma @ 0x%p)\n", NULL, NULL);
44809+#else
44810 seq_printf(m, " RequestFrames @ 0x%p (Dma @ 0x%p)\n",
44811 (void *)ioc->req_frames, (void *)(ulong)ioc->req_frames_dma);
44812+#endif
44813+
44814 /*
44815 * Rounding UP to nearest 4-kB boundary here...
44816 */
44817@@ -6769,7 +6774,11 @@ static int mpt_iocinfo_proc_show(struct seq_file *m, void *v)
44818 ioc->facts.GlobalCredits);
44819
44820 seq_printf(m, " Frames @ 0x%p (Dma @ 0x%p)\n",
44821+#ifdef CONFIG_GRKERNSEC_HIDESYM
44822+ NULL, NULL);
44823+#else
44824 (void *)ioc->alloc, (void *)(ulong)ioc->alloc_dma);
44825+#endif
44826 sz = (ioc->reply_sz * ioc->reply_depth) + 128;
44827 seq_printf(m, " {CurRepSz=%d} x {CurRepDepth=%d} = %d bytes ^= 0x%x\n",
44828 ioc->reply_sz, ioc->reply_depth, ioc->reply_sz*ioc->reply_depth, sz);
44829diff --git a/drivers/message/fusion/mptsas.c b/drivers/message/fusion/mptsas.c
44830index 00d339c..2ea899d 100644
44831--- a/drivers/message/fusion/mptsas.c
44832+++ b/drivers/message/fusion/mptsas.c
44833@@ -446,6 +446,23 @@ mptsas_is_end_device(struct mptsas_devinfo * attached)
44834 return 0;
44835 }
44836
44837+static inline void
44838+mptsas_set_rphy(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info, struct sas_rphy *rphy)
44839+{
44840+ if (phy_info->port_details) {
44841+ phy_info->port_details->rphy = rphy;
44842+ dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "sas_rphy_add: rphy=%p\n",
44843+ ioc->name, rphy));
44844+ }
44845+
44846+ if (rphy) {
44847+ dsaswideprintk(ioc, dev_printk(KERN_DEBUG,
44848+ &rphy->dev, MYIOC_s_FMT "add:", ioc->name));
44849+ dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rphy=%p release=%p\n",
44850+ ioc->name, rphy, rphy->dev.release));
44851+ }
44852+}
44853+
44854 /* no mutex */
44855 static void
44856 mptsas_port_delete(MPT_ADAPTER *ioc, struct mptsas_portinfo_details * port_details)
44857@@ -484,23 +501,6 @@ mptsas_get_rphy(struct mptsas_phyinfo *phy_info)
44858 return NULL;
44859 }
44860
44861-static inline void
44862-mptsas_set_rphy(MPT_ADAPTER *ioc, struct mptsas_phyinfo *phy_info, struct sas_rphy *rphy)
44863-{
44864- if (phy_info->port_details) {
44865- phy_info->port_details->rphy = rphy;
44866- dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "sas_rphy_add: rphy=%p\n",
44867- ioc->name, rphy));
44868- }
44869-
44870- if (rphy) {
44871- dsaswideprintk(ioc, dev_printk(KERN_DEBUG,
44872- &rphy->dev, MYIOC_s_FMT "add:", ioc->name));
44873- dsaswideprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rphy=%p release=%p\n",
44874- ioc->name, rphy, rphy->dev.release));
44875- }
44876-}
44877-
44878 static inline struct sas_port *
44879 mptsas_get_port(struct mptsas_phyinfo *phy_info)
44880 {
44881diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c
44882index 727819c..ad74694 100644
44883--- a/drivers/message/fusion/mptscsih.c
44884+++ b/drivers/message/fusion/mptscsih.c
44885@@ -1271,15 +1271,16 @@ mptscsih_info(struct Scsi_Host *SChost)
44886
44887 h = shost_priv(SChost);
44888
44889- if (h) {
44890- if (h->info_kbuf == NULL)
44891- if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL)
44892- return h->info_kbuf;
44893- h->info_kbuf[0] = '\0';
44894+ if (!h)
44895+ return NULL;
44896
44897- mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0);
44898- h->info_kbuf[size-1] = '\0';
44899- }
44900+ if (h->info_kbuf == NULL)
44901+ if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL)
44902+ return h->info_kbuf;
44903+ h->info_kbuf[0] = '\0';
44904+
44905+ mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0);
44906+ h->info_kbuf[size-1] = '\0';
44907
44908 return h->info_kbuf;
44909 }
44910diff --git a/drivers/message/i2o/i2o_proc.c b/drivers/message/i2o/i2o_proc.c
44911index b7d87cd..3fb36da 100644
44912--- a/drivers/message/i2o/i2o_proc.c
44913+++ b/drivers/message/i2o/i2o_proc.c
44914@@ -255,12 +255,6 @@ static char *scsi_devices[] = {
44915 "Array Controller Device"
44916 };
44917
44918-static char *chtostr(char *tmp, u8 *chars, int n)
44919-{
44920- tmp[0] = 0;
44921- return strncat(tmp, (char *)chars, n);
44922-}
44923-
44924 static int i2o_report_query_status(struct seq_file *seq, int block_status,
44925 char *group)
44926 {
44927@@ -707,9 +701,9 @@ static int i2o_seq_show_status(struct seq_file *seq, void *v)
44928 static int i2o_seq_show_hw(struct seq_file *seq, void *v)
44929 {
44930 struct i2o_controller *c = (struct i2o_controller *)seq->private;
44931- static u32 work32[5];
44932- static u8 *work8 = (u8 *) work32;
44933- static u16 *work16 = (u16 *) work32;
44934+ u32 work32[5];
44935+ u8 *work8 = (u8 *) work32;
44936+ u16 *work16 = (u16 *) work32;
44937 int token;
44938 u32 hwcap;
44939
44940@@ -790,7 +784,6 @@ static int i2o_seq_show_ddm_table(struct seq_file *seq, void *v)
44941 } *result;
44942
44943 i2o_exec_execute_ddm_table ddm_table;
44944- char tmp[28 + 1];
44945
44946 result = kmalloc(sizeof(*result), GFP_KERNEL);
44947 if (!result)
44948@@ -825,8 +818,7 @@ static int i2o_seq_show_ddm_table(struct seq_file *seq, void *v)
44949
44950 seq_printf(seq, "%-#7x", ddm_table.i2o_vendor_id);
44951 seq_printf(seq, "%-#8x", ddm_table.module_id);
44952- seq_printf(seq, "%-29s",
44953- chtostr(tmp, ddm_table.module_name_version, 28));
44954+ seq_printf(seq, "%-.28s", ddm_table.module_name_version);
44955 seq_printf(seq, "%9d ", ddm_table.data_size);
44956 seq_printf(seq, "%8d", ddm_table.code_size);
44957
44958@@ -893,7 +885,6 @@ static int i2o_seq_show_drivers_stored(struct seq_file *seq, void *v)
44959
44960 i2o_driver_result_table *result;
44961 i2o_driver_store_table *dst;
44962- char tmp[28 + 1];
44963
44964 result = kmalloc(sizeof(i2o_driver_result_table), GFP_KERNEL);
44965 if (result == NULL)
44966@@ -928,9 +919,8 @@ static int i2o_seq_show_drivers_stored(struct seq_file *seq, void *v)
44967
44968 seq_printf(seq, "%-#7x", dst->i2o_vendor_id);
44969 seq_printf(seq, "%-#8x", dst->module_id);
44970- seq_printf(seq, "%-29s",
44971- chtostr(tmp, dst->module_name_version, 28));
44972- seq_printf(seq, "%-9s", chtostr(tmp, dst->date, 8));
44973+ seq_printf(seq, "%-.28s", dst->module_name_version);
44974+ seq_printf(seq, "%-.8s", dst->date);
44975 seq_printf(seq, "%8d ", dst->module_size);
44976 seq_printf(seq, "%8d ", dst->mpb_size);
44977 seq_printf(seq, "0x%04x", dst->module_flags);
44978@@ -1246,11 +1236,10 @@ static int i2o_seq_show_authorized_users(struct seq_file *seq, void *v)
44979 static int i2o_seq_show_dev_identity(struct seq_file *seq, void *v)
44980 {
44981 struct i2o_device *d = (struct i2o_device *)seq->private;
44982- static u32 work32[128]; // allow for "stuff" + up to 256 byte (max) serial number
44983+ u32 work32[128]; // allow for "stuff" + up to 256 byte (max) serial number
44984 // == (allow) 512d bytes (max)
44985- static u16 *work16 = (u16 *) work32;
44986+ u16 *work16 = (u16 *) work32;
44987 int token;
44988- char tmp[16 + 1];
44989
44990 token = i2o_parm_field_get(d, 0xF100, -1, &work32, sizeof(work32));
44991
44992@@ -1262,14 +1251,10 @@ static int i2o_seq_show_dev_identity(struct seq_file *seq, void *v)
44993 seq_printf(seq, "Device Class : %s\n", i2o_get_class_name(work16[0]));
44994 seq_printf(seq, "Owner TID : %0#5x\n", work16[2]);
44995 seq_printf(seq, "Parent TID : %0#5x\n", work16[3]);
44996- seq_printf(seq, "Vendor info : %s\n",
44997- chtostr(tmp, (u8 *) (work32 + 2), 16));
44998- seq_printf(seq, "Product info : %s\n",
44999- chtostr(tmp, (u8 *) (work32 + 6), 16));
45000- seq_printf(seq, "Description : %s\n",
45001- chtostr(tmp, (u8 *) (work32 + 10), 16));
45002- seq_printf(seq, "Product rev. : %s\n",
45003- chtostr(tmp, (u8 *) (work32 + 14), 8));
45004+ seq_printf(seq, "Vendor info : %.16s\n", (u8 *) (work32 + 2));
45005+ seq_printf(seq, "Product info : %.16s\n", (u8 *) (work32 + 6));
45006+ seq_printf(seq, "Description : %.16s\n", (u8 *) (work32 + 10));
45007+ seq_printf(seq, "Product rev. : %.8s\n", (u8 *) (work32 + 14));
45008
45009 seq_printf(seq, "Serial number : ");
45010 print_serial_number(seq, (u8 *) (work32 + 16),
45011@@ -1306,8 +1291,6 @@ static int i2o_seq_show_ddm_identity(struct seq_file *seq, void *v)
45012 u8 pad[256]; // allow up to 256 byte (max) serial number
45013 } result;
45014
45015- char tmp[24 + 1];
45016-
45017 token = i2o_parm_field_get(d, 0xF101, -1, &result, sizeof(result));
45018
45019 if (token < 0) {
45020@@ -1316,10 +1299,8 @@ static int i2o_seq_show_ddm_identity(struct seq_file *seq, void *v)
45021 }
45022
45023 seq_printf(seq, "Registering DDM TID : 0x%03x\n", result.ddm_tid);
45024- seq_printf(seq, "Module name : %s\n",
45025- chtostr(tmp, result.module_name, 24));
45026- seq_printf(seq, "Module revision : %s\n",
45027- chtostr(tmp, result.module_rev, 8));
45028+ seq_printf(seq, "Module name : %.24s\n", result.module_name);
45029+ seq_printf(seq, "Module revision : %.8s\n", result.module_rev);
45030
45031 seq_printf(seq, "Serial number : ");
45032 print_serial_number(seq, result.serial_number, sizeof(result) - 36);
45033@@ -1343,8 +1324,6 @@ static int i2o_seq_show_uinfo(struct seq_file *seq, void *v)
45034 u8 instance_number[4];
45035 } result;
45036
45037- char tmp[64 + 1];
45038-
45039 token = i2o_parm_field_get(d, 0xF102, -1, &result, sizeof(result));
45040
45041 if (token < 0) {
45042@@ -1352,14 +1331,10 @@ static int i2o_seq_show_uinfo(struct seq_file *seq, void *v)
45043 return 0;
45044 }
45045
45046- seq_printf(seq, "Device name : %s\n",
45047- chtostr(tmp, result.device_name, 64));
45048- seq_printf(seq, "Service name : %s\n",
45049- chtostr(tmp, result.service_name, 64));
45050- seq_printf(seq, "Physical name : %s\n",
45051- chtostr(tmp, result.physical_location, 64));
45052- seq_printf(seq, "Instance number : %s\n",
45053- chtostr(tmp, result.instance_number, 4));
45054+ seq_printf(seq, "Device name : %.64s\n", result.device_name);
45055+ seq_printf(seq, "Service name : %.64s\n", result.service_name);
45056+ seq_printf(seq, "Physical name : %.64s\n", result.physical_location);
45057+ seq_printf(seq, "Instance number : %.4s\n", result.instance_number);
45058
45059 return 0;
45060 }
45061@@ -1368,9 +1343,9 @@ static int i2o_seq_show_uinfo(struct seq_file *seq, void *v)
45062 static int i2o_seq_show_sgl_limits(struct seq_file *seq, void *v)
45063 {
45064 struct i2o_device *d = (struct i2o_device *)seq->private;
45065- static u32 work32[12];
45066- static u16 *work16 = (u16 *) work32;
45067- static u8 *work8 = (u8 *) work32;
45068+ u32 work32[12];
45069+ u16 *work16 = (u16 *) work32;
45070+ u8 *work8 = (u8 *) work32;
45071 int token;
45072
45073 token = i2o_parm_field_get(d, 0xF103, -1, &work32, sizeof(work32));
45074diff --git a/drivers/message/i2o/iop.c b/drivers/message/i2o/iop.c
45075index 92752fb..a7494f6 100644
45076--- a/drivers/message/i2o/iop.c
45077+++ b/drivers/message/i2o/iop.c
45078@@ -111,10 +111,10 @@ u32 i2o_cntxt_list_add(struct i2o_controller * c, void *ptr)
45079
45080 spin_lock_irqsave(&c->context_list_lock, flags);
45081
45082- if (unlikely(atomic_inc_and_test(&c->context_list_counter)))
45083- atomic_inc(&c->context_list_counter);
45084+ if (unlikely(atomic_inc_and_test_unchecked(&c->context_list_counter)))
45085+ atomic_inc_unchecked(&c->context_list_counter);
45086
45087- entry->context = atomic_read(&c->context_list_counter);
45088+ entry->context = atomic_read_unchecked(&c->context_list_counter);
45089
45090 list_add(&entry->list, &c->context_list);
45091
45092@@ -1076,7 +1076,7 @@ struct i2o_controller *i2o_iop_alloc(void)
45093
45094 #if BITS_PER_LONG == 64
45095 spin_lock_init(&c->context_list_lock);
45096- atomic_set(&c->context_list_counter, 0);
45097+ atomic_set_unchecked(&c->context_list_counter, 0);
45098 INIT_LIST_HEAD(&c->context_list);
45099 #endif
45100
45101diff --git a/drivers/mfd/ab8500-debugfs.c b/drivers/mfd/ab8500-debugfs.c
45102index d1a22aa..d0f7bf7 100644
45103--- a/drivers/mfd/ab8500-debugfs.c
45104+++ b/drivers/mfd/ab8500-debugfs.c
45105@@ -100,7 +100,7 @@ static int irq_last;
45106 static u32 *irq_count;
45107 static int num_irqs;
45108
45109-static struct device_attribute **dev_attr;
45110+static device_attribute_no_const **dev_attr;
45111 static char **event_name;
45112
45113 static u8 avg_sample = SAMPLE_16;
45114diff --git a/drivers/mfd/max8925-i2c.c b/drivers/mfd/max8925-i2c.c
45115index a83eed5..62a58a9 100644
45116--- a/drivers/mfd/max8925-i2c.c
45117+++ b/drivers/mfd/max8925-i2c.c
45118@@ -152,7 +152,7 @@ static int max8925_probe(struct i2c_client *client,
45119 const struct i2c_device_id *id)
45120 {
45121 struct max8925_platform_data *pdata = dev_get_platdata(&client->dev);
45122- static struct max8925_chip *chip;
45123+ struct max8925_chip *chip;
45124 struct device_node *node = client->dev.of_node;
45125
45126 if (node && !pdata) {
45127diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c
45128index 460a014..21d3061 100644
45129--- a/drivers/mfd/tps65910.c
45130+++ b/drivers/mfd/tps65910.c
45131@@ -230,7 +230,7 @@ static int tps65910_irq_init(struct tps65910 *tps65910, int irq,
45132 struct tps65910_platform_data *pdata)
45133 {
45134 int ret = 0;
45135- static struct regmap_irq_chip *tps6591x_irqs_chip;
45136+ struct regmap_irq_chip *tps6591x_irqs_chip;
45137
45138 if (!irq) {
45139 dev_warn(tps65910->dev, "No interrupt support, no core IRQ\n");
45140diff --git a/drivers/mfd/twl4030-irq.c b/drivers/mfd/twl4030-irq.c
45141index 596b1f6..5b6ab74 100644
45142--- a/drivers/mfd/twl4030-irq.c
45143+++ b/drivers/mfd/twl4030-irq.c
45144@@ -34,6 +34,7 @@
45145 #include <linux/of.h>
45146 #include <linux/irqdomain.h>
45147 #include <linux/i2c/twl.h>
45148+#include <asm/pgtable.h>
45149
45150 #include "twl-core.h"
45151
45152@@ -725,10 +726,12 @@ int twl4030_init_irq(struct device *dev, int irq_num)
45153 * Install an irq handler for each of the SIH modules;
45154 * clone dummy irq_chip since PIH can't *do* anything
45155 */
45156- twl4030_irq_chip = dummy_irq_chip;
45157- twl4030_irq_chip.name = "twl4030";
45158+ pax_open_kernel();
45159+ memcpy((void *)&twl4030_irq_chip, &dummy_irq_chip, sizeof twl4030_irq_chip);
45160+ *(const char **)&twl4030_irq_chip.name = "twl4030";
45161
45162- twl4030_sih_irq_chip.irq_ack = dummy_irq_chip.irq_ack;
45163+ *(void **)&twl4030_sih_irq_chip.irq_ack = dummy_irq_chip.irq_ack;
45164+ pax_close_kernel();
45165
45166 for (i = irq_base; i < irq_end; i++) {
45167 irq_set_chip_and_handler(i, &twl4030_irq_chip,
45168diff --git a/drivers/misc/c2port/core.c b/drivers/misc/c2port/core.c
45169index 464419b..64bae8d 100644
45170--- a/drivers/misc/c2port/core.c
45171+++ b/drivers/misc/c2port/core.c
45172@@ -922,7 +922,9 @@ struct c2port_device *c2port_device_register(char *name,
45173 goto error_idr_alloc;
45174 c2dev->id = ret;
45175
45176- bin_attr_flash_data.size = ops->blocks_num * ops->block_size;
45177+ pax_open_kernel();
45178+ *(size_t *)&bin_attr_flash_data.size = ops->blocks_num * ops->block_size;
45179+ pax_close_kernel();
45180
45181 c2dev->dev = device_create(c2port_class, NULL, 0, c2dev,
45182 "c2port%d", c2dev->id);
45183diff --git a/drivers/misc/eeprom/sunxi_sid.c b/drivers/misc/eeprom/sunxi_sid.c
45184index 3f2b625..945e179 100644
45185--- a/drivers/misc/eeprom/sunxi_sid.c
45186+++ b/drivers/misc/eeprom/sunxi_sid.c
45187@@ -126,7 +126,9 @@ static int sunxi_sid_probe(struct platform_device *pdev)
45188
45189 platform_set_drvdata(pdev, sid_data);
45190
45191- sid_bin_attr.size = sid_data->keysize;
45192+ pax_open_kernel();
45193+ *(size_t *)&sid_bin_attr.size = sid_data->keysize;
45194+ pax_close_kernel();
45195 if (device_create_bin_file(&pdev->dev, &sid_bin_attr))
45196 return -ENODEV;
45197
45198diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c
45199index 36f5d52..32311c3 100644
45200--- a/drivers/misc/kgdbts.c
45201+++ b/drivers/misc/kgdbts.c
45202@@ -834,7 +834,7 @@ static void run_plant_and_detach_test(int is_early)
45203 char before[BREAK_INSTR_SIZE];
45204 char after[BREAK_INSTR_SIZE];
45205
45206- probe_kernel_read(before, (char *)kgdbts_break_test,
45207+ probe_kernel_read(before, ktla_ktva((char *)kgdbts_break_test),
45208 BREAK_INSTR_SIZE);
45209 init_simple_test();
45210 ts.tst = plant_and_detach_test;
45211@@ -842,7 +842,7 @@ static void run_plant_and_detach_test(int is_early)
45212 /* Activate test with initial breakpoint */
45213 if (!is_early)
45214 kgdb_breakpoint();
45215- probe_kernel_read(after, (char *)kgdbts_break_test,
45216+ probe_kernel_read(after, ktla_ktva((char *)kgdbts_break_test),
45217 BREAK_INSTR_SIZE);
45218 if (memcmp(before, after, BREAK_INSTR_SIZE)) {
45219 printk(KERN_CRIT "kgdbts: ERROR kgdb corrupted memory\n");
45220diff --git a/drivers/misc/lis3lv02d/lis3lv02d.c b/drivers/misc/lis3lv02d/lis3lv02d.c
45221index 3ef4627..8d00486 100644
45222--- a/drivers/misc/lis3lv02d/lis3lv02d.c
45223+++ b/drivers/misc/lis3lv02d/lis3lv02d.c
45224@@ -497,7 +497,7 @@ static irqreturn_t lis302dl_interrupt(int irq, void *data)
45225 * the lid is closed. This leads to interrupts as soon as a little move
45226 * is done.
45227 */
45228- atomic_inc(&lis3->count);
45229+ atomic_inc_unchecked(&lis3->count);
45230
45231 wake_up_interruptible(&lis3->misc_wait);
45232 kill_fasync(&lis3->async_queue, SIGIO, POLL_IN);
45233@@ -583,7 +583,7 @@ static int lis3lv02d_misc_open(struct inode *inode, struct file *file)
45234 if (lis3->pm_dev)
45235 pm_runtime_get_sync(lis3->pm_dev);
45236
45237- atomic_set(&lis3->count, 0);
45238+ atomic_set_unchecked(&lis3->count, 0);
45239 return 0;
45240 }
45241
45242@@ -615,7 +615,7 @@ static ssize_t lis3lv02d_misc_read(struct file *file, char __user *buf,
45243 add_wait_queue(&lis3->misc_wait, &wait);
45244 while (true) {
45245 set_current_state(TASK_INTERRUPTIBLE);
45246- data = atomic_xchg(&lis3->count, 0);
45247+ data = atomic_xchg_unchecked(&lis3->count, 0);
45248 if (data)
45249 break;
45250
45251@@ -656,7 +656,7 @@ static unsigned int lis3lv02d_misc_poll(struct file *file, poll_table *wait)
45252 struct lis3lv02d, miscdev);
45253
45254 poll_wait(file, &lis3->misc_wait, wait);
45255- if (atomic_read(&lis3->count))
45256+ if (atomic_read_unchecked(&lis3->count))
45257 return POLLIN | POLLRDNORM;
45258 return 0;
45259 }
45260diff --git a/drivers/misc/lis3lv02d/lis3lv02d.h b/drivers/misc/lis3lv02d/lis3lv02d.h
45261index c439c82..1f20f57 100644
45262--- a/drivers/misc/lis3lv02d/lis3lv02d.h
45263+++ b/drivers/misc/lis3lv02d/lis3lv02d.h
45264@@ -297,7 +297,7 @@ struct lis3lv02d {
45265 struct input_polled_dev *idev; /* input device */
45266 struct platform_device *pdev; /* platform device */
45267 struct regulator_bulk_data regulators[2];
45268- atomic_t count; /* interrupt count after last read */
45269+ atomic_unchecked_t count; /* interrupt count after last read */
45270 union axis_conversion ac; /* hw -> logical axis */
45271 int mapped_btns[3];
45272
45273diff --git a/drivers/misc/sgi-gru/gruhandles.c b/drivers/misc/sgi-gru/gruhandles.c
45274index 2f30bad..c4c13d0 100644
45275--- a/drivers/misc/sgi-gru/gruhandles.c
45276+++ b/drivers/misc/sgi-gru/gruhandles.c
45277@@ -44,8 +44,8 @@ static void update_mcs_stats(enum mcs_op op, unsigned long clks)
45278 unsigned long nsec;
45279
45280 nsec = CLKS2NSEC(clks);
45281- atomic_long_inc(&mcs_op_statistics[op].count);
45282- atomic_long_add(nsec, &mcs_op_statistics[op].total);
45283+ atomic_long_inc_unchecked(&mcs_op_statistics[op].count);
45284+ atomic_long_add_unchecked(nsec, &mcs_op_statistics[op].total);
45285 if (mcs_op_statistics[op].max < nsec)
45286 mcs_op_statistics[op].max = nsec;
45287 }
45288diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c
45289index 4f76359..cdfcb2e 100644
45290--- a/drivers/misc/sgi-gru/gruprocfs.c
45291+++ b/drivers/misc/sgi-gru/gruprocfs.c
45292@@ -32,9 +32,9 @@
45293
45294 #define printstat(s, f) printstat_val(s, &gru_stats.f, #f)
45295
45296-static void printstat_val(struct seq_file *s, atomic_long_t *v, char *id)
45297+static void printstat_val(struct seq_file *s, atomic_long_unchecked_t *v, char *id)
45298 {
45299- unsigned long val = atomic_long_read(v);
45300+ unsigned long val = atomic_long_read_unchecked(v);
45301
45302 seq_printf(s, "%16lu %s\n", val, id);
45303 }
45304@@ -134,8 +134,8 @@ static int mcs_statistics_show(struct seq_file *s, void *p)
45305
45306 seq_printf(s, "%-20s%12s%12s%12s\n", "#id", "count", "aver-clks", "max-clks");
45307 for (op = 0; op < mcsop_last; op++) {
45308- count = atomic_long_read(&mcs_op_statistics[op].count);
45309- total = atomic_long_read(&mcs_op_statistics[op].total);
45310+ count = atomic_long_read_unchecked(&mcs_op_statistics[op].count);
45311+ total = atomic_long_read_unchecked(&mcs_op_statistics[op].total);
45312 max = mcs_op_statistics[op].max;
45313 seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count,
45314 count ? total / count : 0, max);
45315diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
45316index 5c3ce24..4915ccb 100644
45317--- a/drivers/misc/sgi-gru/grutables.h
45318+++ b/drivers/misc/sgi-gru/grutables.h
45319@@ -167,82 +167,82 @@ extern unsigned int gru_max_gids;
45320 * GRU statistics.
45321 */
45322 struct gru_stats_s {
45323- atomic_long_t vdata_alloc;
45324- atomic_long_t vdata_free;
45325- atomic_long_t gts_alloc;
45326- atomic_long_t gts_free;
45327- atomic_long_t gms_alloc;
45328- atomic_long_t gms_free;
45329- atomic_long_t gts_double_allocate;
45330- atomic_long_t assign_context;
45331- atomic_long_t assign_context_failed;
45332- atomic_long_t free_context;
45333- atomic_long_t load_user_context;
45334- atomic_long_t load_kernel_context;
45335- atomic_long_t lock_kernel_context;
45336- atomic_long_t unlock_kernel_context;
45337- atomic_long_t steal_user_context;
45338- atomic_long_t steal_kernel_context;
45339- atomic_long_t steal_context_failed;
45340- atomic_long_t nopfn;
45341- atomic_long_t asid_new;
45342- atomic_long_t asid_next;
45343- atomic_long_t asid_wrap;
45344- atomic_long_t asid_reuse;
45345- atomic_long_t intr;
45346- atomic_long_t intr_cbr;
45347- atomic_long_t intr_tfh;
45348- atomic_long_t intr_spurious;
45349- atomic_long_t intr_mm_lock_failed;
45350- atomic_long_t call_os;
45351- atomic_long_t call_os_wait_queue;
45352- atomic_long_t user_flush_tlb;
45353- atomic_long_t user_unload_context;
45354- atomic_long_t user_exception;
45355- atomic_long_t set_context_option;
45356- atomic_long_t check_context_retarget_intr;
45357- atomic_long_t check_context_unload;
45358- atomic_long_t tlb_dropin;
45359- atomic_long_t tlb_preload_page;
45360- atomic_long_t tlb_dropin_fail_no_asid;
45361- atomic_long_t tlb_dropin_fail_upm;
45362- atomic_long_t tlb_dropin_fail_invalid;
45363- atomic_long_t tlb_dropin_fail_range_active;
45364- atomic_long_t tlb_dropin_fail_idle;
45365- atomic_long_t tlb_dropin_fail_fmm;
45366- atomic_long_t tlb_dropin_fail_no_exception;
45367- atomic_long_t tfh_stale_on_fault;
45368- atomic_long_t mmu_invalidate_range;
45369- atomic_long_t mmu_invalidate_page;
45370- atomic_long_t flush_tlb;
45371- atomic_long_t flush_tlb_gru;
45372- atomic_long_t flush_tlb_gru_tgh;
45373- atomic_long_t flush_tlb_gru_zero_asid;
45374+ atomic_long_unchecked_t vdata_alloc;
45375+ atomic_long_unchecked_t vdata_free;
45376+ atomic_long_unchecked_t gts_alloc;
45377+ atomic_long_unchecked_t gts_free;
45378+ atomic_long_unchecked_t gms_alloc;
45379+ atomic_long_unchecked_t gms_free;
45380+ atomic_long_unchecked_t gts_double_allocate;
45381+ atomic_long_unchecked_t assign_context;
45382+ atomic_long_unchecked_t assign_context_failed;
45383+ atomic_long_unchecked_t free_context;
45384+ atomic_long_unchecked_t load_user_context;
45385+ atomic_long_unchecked_t load_kernel_context;
45386+ atomic_long_unchecked_t lock_kernel_context;
45387+ atomic_long_unchecked_t unlock_kernel_context;
45388+ atomic_long_unchecked_t steal_user_context;
45389+ atomic_long_unchecked_t steal_kernel_context;
45390+ atomic_long_unchecked_t steal_context_failed;
45391+ atomic_long_unchecked_t nopfn;
45392+ atomic_long_unchecked_t asid_new;
45393+ atomic_long_unchecked_t asid_next;
45394+ atomic_long_unchecked_t asid_wrap;
45395+ atomic_long_unchecked_t asid_reuse;
45396+ atomic_long_unchecked_t intr;
45397+ atomic_long_unchecked_t intr_cbr;
45398+ atomic_long_unchecked_t intr_tfh;
45399+ atomic_long_unchecked_t intr_spurious;
45400+ atomic_long_unchecked_t intr_mm_lock_failed;
45401+ atomic_long_unchecked_t call_os;
45402+ atomic_long_unchecked_t call_os_wait_queue;
45403+ atomic_long_unchecked_t user_flush_tlb;
45404+ atomic_long_unchecked_t user_unload_context;
45405+ atomic_long_unchecked_t user_exception;
45406+ atomic_long_unchecked_t set_context_option;
45407+ atomic_long_unchecked_t check_context_retarget_intr;
45408+ atomic_long_unchecked_t check_context_unload;
45409+ atomic_long_unchecked_t tlb_dropin;
45410+ atomic_long_unchecked_t tlb_preload_page;
45411+ atomic_long_unchecked_t tlb_dropin_fail_no_asid;
45412+ atomic_long_unchecked_t tlb_dropin_fail_upm;
45413+ atomic_long_unchecked_t tlb_dropin_fail_invalid;
45414+ atomic_long_unchecked_t tlb_dropin_fail_range_active;
45415+ atomic_long_unchecked_t tlb_dropin_fail_idle;
45416+ atomic_long_unchecked_t tlb_dropin_fail_fmm;
45417+ atomic_long_unchecked_t tlb_dropin_fail_no_exception;
45418+ atomic_long_unchecked_t tfh_stale_on_fault;
45419+ atomic_long_unchecked_t mmu_invalidate_range;
45420+ atomic_long_unchecked_t mmu_invalidate_page;
45421+ atomic_long_unchecked_t flush_tlb;
45422+ atomic_long_unchecked_t flush_tlb_gru;
45423+ atomic_long_unchecked_t flush_tlb_gru_tgh;
45424+ atomic_long_unchecked_t flush_tlb_gru_zero_asid;
45425
45426- atomic_long_t copy_gpa;
45427- atomic_long_t read_gpa;
45428+ atomic_long_unchecked_t copy_gpa;
45429+ atomic_long_unchecked_t read_gpa;
45430
45431- atomic_long_t mesq_receive;
45432- atomic_long_t mesq_receive_none;
45433- atomic_long_t mesq_send;
45434- atomic_long_t mesq_send_failed;
45435- atomic_long_t mesq_noop;
45436- atomic_long_t mesq_send_unexpected_error;
45437- atomic_long_t mesq_send_lb_overflow;
45438- atomic_long_t mesq_send_qlimit_reached;
45439- atomic_long_t mesq_send_amo_nacked;
45440- atomic_long_t mesq_send_put_nacked;
45441- atomic_long_t mesq_page_overflow;
45442- atomic_long_t mesq_qf_locked;
45443- atomic_long_t mesq_qf_noop_not_full;
45444- atomic_long_t mesq_qf_switch_head_failed;
45445- atomic_long_t mesq_qf_unexpected_error;
45446- atomic_long_t mesq_noop_unexpected_error;
45447- atomic_long_t mesq_noop_lb_overflow;
45448- atomic_long_t mesq_noop_qlimit_reached;
45449- atomic_long_t mesq_noop_amo_nacked;
45450- atomic_long_t mesq_noop_put_nacked;
45451- atomic_long_t mesq_noop_page_overflow;
45452+ atomic_long_unchecked_t mesq_receive;
45453+ atomic_long_unchecked_t mesq_receive_none;
45454+ atomic_long_unchecked_t mesq_send;
45455+ atomic_long_unchecked_t mesq_send_failed;
45456+ atomic_long_unchecked_t mesq_noop;
45457+ atomic_long_unchecked_t mesq_send_unexpected_error;
45458+ atomic_long_unchecked_t mesq_send_lb_overflow;
45459+ atomic_long_unchecked_t mesq_send_qlimit_reached;
45460+ atomic_long_unchecked_t mesq_send_amo_nacked;
45461+ atomic_long_unchecked_t mesq_send_put_nacked;
45462+ atomic_long_unchecked_t mesq_page_overflow;
45463+ atomic_long_unchecked_t mesq_qf_locked;
45464+ atomic_long_unchecked_t mesq_qf_noop_not_full;
45465+ atomic_long_unchecked_t mesq_qf_switch_head_failed;
45466+ atomic_long_unchecked_t mesq_qf_unexpected_error;
45467+ atomic_long_unchecked_t mesq_noop_unexpected_error;
45468+ atomic_long_unchecked_t mesq_noop_lb_overflow;
45469+ atomic_long_unchecked_t mesq_noop_qlimit_reached;
45470+ atomic_long_unchecked_t mesq_noop_amo_nacked;
45471+ atomic_long_unchecked_t mesq_noop_put_nacked;
45472+ atomic_long_unchecked_t mesq_noop_page_overflow;
45473
45474 };
45475
45476@@ -251,8 +251,8 @@ enum mcs_op {cchop_allocate, cchop_start, cchop_interrupt, cchop_interrupt_sync,
45477 tghop_invalidate, mcsop_last};
45478
45479 struct mcs_op_statistic {
45480- atomic_long_t count;
45481- atomic_long_t total;
45482+ atomic_long_unchecked_t count;
45483+ atomic_long_unchecked_t total;
45484 unsigned long max;
45485 };
45486
45487@@ -275,7 +275,7 @@ extern struct mcs_op_statistic mcs_op_statistics[mcsop_last];
45488
45489 #define STAT(id) do { \
45490 if (gru_options & OPT_STATS) \
45491- atomic_long_inc(&gru_stats.id); \
45492+ atomic_long_inc_unchecked(&gru_stats.id); \
45493 } while (0)
45494
45495 #ifdef CONFIG_SGI_GRU_DEBUG
45496diff --git a/drivers/misc/sgi-xp/xp.h b/drivers/misc/sgi-xp/xp.h
45497index c862cd4..0d176fe 100644
45498--- a/drivers/misc/sgi-xp/xp.h
45499+++ b/drivers/misc/sgi-xp/xp.h
45500@@ -288,7 +288,7 @@ struct xpc_interface {
45501 xpc_notify_func, void *);
45502 void (*received) (short, int, void *);
45503 enum xp_retval (*partid_to_nasids) (short, void *);
45504-};
45505+} __no_const;
45506
45507 extern struct xpc_interface xpc_interface;
45508
45509diff --git a/drivers/misc/sgi-xp/xp_main.c b/drivers/misc/sgi-xp/xp_main.c
45510index 01be66d..e3a0c7e 100644
45511--- a/drivers/misc/sgi-xp/xp_main.c
45512+++ b/drivers/misc/sgi-xp/xp_main.c
45513@@ -78,13 +78,13 @@ xpc_notloaded(void)
45514 }
45515
45516 struct xpc_interface xpc_interface = {
45517- (void (*)(int))xpc_notloaded,
45518- (void (*)(int))xpc_notloaded,
45519- (enum xp_retval(*)(short, int, u32, void *, u16))xpc_notloaded,
45520- (enum xp_retval(*)(short, int, u32, void *, u16, xpc_notify_func,
45521+ .connect = (void (*)(int))xpc_notloaded,
45522+ .disconnect = (void (*)(int))xpc_notloaded,
45523+ .send = (enum xp_retval(*)(short, int, u32, void *, u16))xpc_notloaded,
45524+ .send_notify = (enum xp_retval(*)(short, int, u32, void *, u16, xpc_notify_func,
45525 void *))xpc_notloaded,
45526- (void (*)(short, int, void *))xpc_notloaded,
45527- (enum xp_retval(*)(short, void *))xpc_notloaded
45528+ .received = (void (*)(short, int, void *))xpc_notloaded,
45529+ .partid_to_nasids = (enum xp_retval(*)(short, void *))xpc_notloaded
45530 };
45531 EXPORT_SYMBOL_GPL(xpc_interface);
45532
45533diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h
45534index b94d5f7..7f494c5 100644
45535--- a/drivers/misc/sgi-xp/xpc.h
45536+++ b/drivers/misc/sgi-xp/xpc.h
45537@@ -835,6 +835,7 @@ struct xpc_arch_operations {
45538 void (*received_payload) (struct xpc_channel *, void *);
45539 void (*notify_senders_of_disconnect) (struct xpc_channel *);
45540 };
45541+typedef struct xpc_arch_operations __no_const xpc_arch_operations_no_const;
45542
45543 /* struct xpc_partition act_state values (for XPC HB) */
45544
45545@@ -876,7 +877,7 @@ extern struct xpc_registration xpc_registrations[];
45546 /* found in xpc_main.c */
45547 extern struct device *xpc_part;
45548 extern struct device *xpc_chan;
45549-extern struct xpc_arch_operations xpc_arch_ops;
45550+extern xpc_arch_operations_no_const xpc_arch_ops;
45551 extern int xpc_disengage_timelimit;
45552 extern int xpc_disengage_timedout;
45553 extern int xpc_activate_IRQ_rcvd;
45554diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c
45555index 82dc574..8539ab2 100644
45556--- a/drivers/misc/sgi-xp/xpc_main.c
45557+++ b/drivers/misc/sgi-xp/xpc_main.c
45558@@ -166,7 +166,7 @@ static struct notifier_block xpc_die_notifier = {
45559 .notifier_call = xpc_system_die,
45560 };
45561
45562-struct xpc_arch_operations xpc_arch_ops;
45563+xpc_arch_operations_no_const xpc_arch_ops;
45564
45565 /*
45566 * Timer function to enforce the timelimit on the partition disengage.
45567@@ -1210,7 +1210,7 @@ xpc_system_die(struct notifier_block *nb, unsigned long event, void *_die_args)
45568
45569 if (((die_args->trapnr == X86_TRAP_MF) ||
45570 (die_args->trapnr == X86_TRAP_XF)) &&
45571- !user_mode_vm(die_args->regs))
45572+ !user_mode(die_args->regs))
45573 xpc_die_deactivate();
45574
45575 break;
45576diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
45577index 452782b..0c10e40 100644
45578--- a/drivers/mmc/card/block.c
45579+++ b/drivers/mmc/card/block.c
45580@@ -574,7 +574,7 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
45581 if (idata->ic.postsleep_min_us)
45582 usleep_range(idata->ic.postsleep_min_us, idata->ic.postsleep_max_us);
45583
45584- if (copy_to_user(&(ic_ptr->response), cmd.resp, sizeof(cmd.resp))) {
45585+ if (copy_to_user(ic_ptr->response, cmd.resp, sizeof(cmd.resp))) {
45586 err = -EFAULT;
45587 goto cmd_rel_host;
45588 }
45589diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c
45590index f51b5ba..86614a7 100644
45591--- a/drivers/mmc/core/mmc_ops.c
45592+++ b/drivers/mmc/core/mmc_ops.c
45593@@ -247,7 +247,7 @@ mmc_send_cxd_data(struct mmc_card *card, struct mmc_host *host,
45594 void *data_buf;
45595 int is_on_stack;
45596
45597- is_on_stack = object_is_on_stack(buf);
45598+ is_on_stack = object_starts_on_stack(buf);
45599 if (is_on_stack) {
45600 /*
45601 * dma onto stack is unsafe/nonportable, but callers to this
45602diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h
45603index 6834977..824ee1b 100644
45604--- a/drivers/mmc/host/dw_mmc.h
45605+++ b/drivers/mmc/host/dw_mmc.h
45606@@ -259,5 +259,5 @@ struct dw_mci_drv_data {
45607 int (*parse_dt)(struct dw_mci *host);
45608 int (*execute_tuning)(struct dw_mci_slot *slot, u32 opcode,
45609 struct dw_mci_tuning_data *tuning_data);
45610-};
45611+} __do_const;
45612 #endif /* _DW_MMC_H_ */
45613diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
45614index 771c60a..12cb615 100644
45615--- a/drivers/mmc/host/mmci.c
45616+++ b/drivers/mmc/host/mmci.c
45617@@ -1570,7 +1570,9 @@ static int mmci_probe(struct amba_device *dev,
45618 mmc->caps2 = plat->capabilities2;
45619
45620 if (variant->busy_detect) {
45621- mmci_ops.card_busy = mmci_card_busy;
45622+ pax_open_kernel();
45623+ *(void **)&mmci_ops.card_busy = mmci_card_busy;
45624+ pax_close_kernel();
45625 mmci_write_datactrlreg(host, MCI_ST_DPSM_BUSYMODE);
45626 mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY;
45627 mmc->max_busy_timeout = 0;
45628diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
45629index b841bb7..d82712f5 100644
45630--- a/drivers/mmc/host/sdhci-esdhc-imx.c
45631+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
45632@@ -1031,9 +1031,12 @@ static int sdhci_esdhc_imx_probe(struct platform_device *pdev)
45633 host->mmc->caps |= MMC_CAP_1_8V_DDR;
45634 }
45635
45636- if (imx_data->socdata->flags & ESDHC_FLAG_MAN_TUNING)
45637- sdhci_esdhc_ops.platform_execute_tuning =
45638+ if (imx_data->socdata->flags & ESDHC_FLAG_MAN_TUNING) {
45639+ pax_open_kernel();
45640+ *(void **)&sdhci_esdhc_ops.platform_execute_tuning =
45641 esdhc_executing_tuning;
45642+ pax_close_kernel();
45643+ }
45644
45645 if (imx_data->socdata->flags & ESDHC_FLAG_STD_TUNING)
45646 writel(readl(host->ioaddr + ESDHC_TUNING_CTRL) |
45647diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
45648index d61eb5a..88c0f5d 100644
45649--- a/drivers/mmc/host/sdhci-s3c.c
45650+++ b/drivers/mmc/host/sdhci-s3c.c
45651@@ -657,9 +657,11 @@ static int sdhci_s3c_probe(struct platform_device *pdev)
45652 * we can use overriding functions instead of default.
45653 */
45654 if (host->quirks & SDHCI_QUIRK_NONSTANDARD_CLOCK) {
45655- sdhci_s3c_ops.set_clock = sdhci_cmu_set_clock;
45656- sdhci_s3c_ops.get_min_clock = sdhci_cmu_get_min_clock;
45657- sdhci_s3c_ops.get_max_clock = sdhci_cmu_get_max_clock;
45658+ pax_open_kernel();
45659+ *(void **)&sdhci_s3c_ops.set_clock = sdhci_cmu_set_clock;
45660+ *(void **)&sdhci_s3c_ops.get_min_clock = sdhci_cmu_get_min_clock;
45661+ *(void **)&sdhci_s3c_ops.get_max_clock = sdhci_cmu_get_max_clock;
45662+ pax_close_kernel();
45663 }
45664
45665 /* It supports additional host capabilities if needed */
45666diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c
45667index 6293855..3415551 100644
45668--- a/drivers/mtd/chips/cfi_cmdset_0020.c
45669+++ b/drivers/mtd/chips/cfi_cmdset_0020.c
45670@@ -666,7 +666,7 @@ cfi_staa_writev(struct mtd_info *mtd, const struct kvec *vecs,
45671 size_t totlen = 0, thislen;
45672 int ret = 0;
45673 size_t buflen = 0;
45674- static char *buffer;
45675+ char *buffer;
45676
45677 if (!ECCBUF_SIZE) {
45678 /* We should fall back to a general writev implementation.
45679diff --git a/drivers/mtd/nand/denali.c b/drivers/mtd/nand/denali.c
45680index c07cd57..61c4fbd 100644
45681--- a/drivers/mtd/nand/denali.c
45682+++ b/drivers/mtd/nand/denali.c
45683@@ -24,6 +24,7 @@
45684 #include <linux/slab.h>
45685 #include <linux/mtd/mtd.h>
45686 #include <linux/module.h>
45687+#include <linux/slab.h>
45688
45689 #include "denali.h"
45690
45691diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
45692index bb77f75..47539b1 100644
45693--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
45694+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
45695@@ -370,7 +370,7 @@ void prepare_data_dma(struct gpmi_nand_data *this, enum dma_data_direction dr)
45696
45697 /* first try to map the upper buffer directly */
45698 if (virt_addr_valid(this->upper_buf) &&
45699- !object_is_on_stack(this->upper_buf)) {
45700+ !object_starts_on_stack(this->upper_buf)) {
45701 sg_init_one(sgl, this->upper_buf, this->upper_len);
45702 ret = dma_map_sg(this->dev, sgl, 1, dr);
45703 if (ret == 0)
45704diff --git a/drivers/mtd/nftlmount.c b/drivers/mtd/nftlmount.c
45705index 51b9d6a..52af9a7 100644
45706--- a/drivers/mtd/nftlmount.c
45707+++ b/drivers/mtd/nftlmount.c
45708@@ -24,6 +24,7 @@
45709 #include <asm/errno.h>
45710 #include <linux/delay.h>
45711 #include <linux/slab.h>
45712+#include <linux/sched.h>
45713 #include <linux/mtd/mtd.h>
45714 #include <linux/mtd/nand.h>
45715 #include <linux/mtd/nftl.h>
45716diff --git a/drivers/mtd/sm_ftl.c b/drivers/mtd/sm_ftl.c
45717index cf49c22..971b133 100644
45718--- a/drivers/mtd/sm_ftl.c
45719+++ b/drivers/mtd/sm_ftl.c
45720@@ -56,7 +56,7 @@ static ssize_t sm_attr_show(struct device *dev, struct device_attribute *attr,
45721 #define SM_CIS_VENDOR_OFFSET 0x59
45722 static struct attribute_group *sm_create_sysfs_attributes(struct sm_ftl *ftl)
45723 {
45724- struct attribute_group *attr_group;
45725+ attribute_group_no_const *attr_group;
45726 struct attribute **attributes;
45727 struct sm_sysfs_attribute *vendor_attribute;
45728 char *vendor;
45729diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
45730index d3a6789..198ec21 100644
45731--- a/drivers/net/bonding/bond_main.c
45732+++ b/drivers/net/bonding/bond_main.c
45733@@ -4504,6 +4504,7 @@ static void __exit bonding_exit(void)
45734
45735 bond_netlink_fini();
45736 unregister_pernet_subsys(&bond_net_ops);
45737+ rtnl_link_unregister(&bond_link_ops);
45738
45739 #ifdef CONFIG_NET_POLL_CONTROLLER
45740 /*
45741diff --git a/drivers/net/bonding/bond_netlink.c b/drivers/net/bonding/bond_netlink.c
45742index f847e16..fc8dbe9 100644
45743--- a/drivers/net/bonding/bond_netlink.c
45744+++ b/drivers/net/bonding/bond_netlink.c
45745@@ -542,7 +542,7 @@ nla_put_failure:
45746 return -EMSGSIZE;
45747 }
45748
45749-struct rtnl_link_ops bond_link_ops __read_mostly = {
45750+struct rtnl_link_ops bond_link_ops = {
45751 .kind = "bond",
45752 .priv_size = sizeof(struct bonding),
45753 .setup = bond_setup,
45754diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig
45755index 9e7d95d..d447b88 100644
45756--- a/drivers/net/can/Kconfig
45757+++ b/drivers/net/can/Kconfig
45758@@ -104,7 +104,7 @@ config CAN_JANZ_ICAN3
45759
45760 config CAN_FLEXCAN
45761 tristate "Support for Freescale FLEXCAN based chips"
45762- depends on ARM || PPC
45763+ depends on (ARM && CPU_LITTLE_ENDIAN) || PPC
45764 ---help---
45765 Say Y here if you want to support for Freescale FlexCAN.
45766
45767diff --git a/drivers/net/ethernet/8390/ax88796.c b/drivers/net/ethernet/8390/ax88796.c
45768index 455d4c3..3353ee7 100644
45769--- a/drivers/net/ethernet/8390/ax88796.c
45770+++ b/drivers/net/ethernet/8390/ax88796.c
45771@@ -889,9 +889,11 @@ static int ax_probe(struct platform_device *pdev)
45772 if (ax->plat->reg_offsets)
45773 ei_local->reg_offset = ax->plat->reg_offsets;
45774 else {
45775+ resource_size_t _mem_size = mem_size;
45776+ do_div(_mem_size, 0x18);
45777 ei_local->reg_offset = ax->reg_offsets;
45778 for (ret = 0; ret < 0x18; ret++)
45779- ax->reg_offsets[ret] = (mem_size / 0x18) * ret;
45780+ ax->reg_offsets[ret] = _mem_size * ret;
45781 }
45782
45783 if (!request_mem_region(mem->start, mem_size, pdev->name)) {
45784diff --git a/drivers/net/ethernet/altera/altera_tse_main.c b/drivers/net/ethernet/altera/altera_tse_main.c
45785index 7330681..7e9e463 100644
45786--- a/drivers/net/ethernet/altera/altera_tse_main.c
45787+++ b/drivers/net/ethernet/altera/altera_tse_main.c
45788@@ -1182,7 +1182,7 @@ static int tse_shutdown(struct net_device *dev)
45789 return 0;
45790 }
45791
45792-static struct net_device_ops altera_tse_netdev_ops = {
45793+static net_device_ops_no_const altera_tse_netdev_ops __read_only = {
45794 .ndo_open = tse_open,
45795 .ndo_stop = tse_shutdown,
45796 .ndo_start_xmit = tse_start_xmit,
45797@@ -1439,11 +1439,13 @@ static int altera_tse_probe(struct platform_device *pdev)
45798 ndev->netdev_ops = &altera_tse_netdev_ops;
45799 altera_tse_set_ethtool_ops(ndev);
45800
45801+ pax_open_kernel();
45802 altera_tse_netdev_ops.ndo_set_rx_mode = tse_set_rx_mode;
45803
45804 if (priv->hash_filter)
45805 altera_tse_netdev_ops.ndo_set_rx_mode =
45806 tse_set_rx_mode_hashfilter;
45807+ pax_close_kernel();
45808
45809 /* Scatter/gather IO is not supported,
45810 * so it is turned off
45811diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
45812index 3448cc0..67b2dc4 100644
45813--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
45814+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.h
45815@@ -1058,7 +1058,7 @@ static inline u8 bnx2x_get_path_func_num(struct bnx2x *bp)
45816 static inline void bnx2x_init_bp_objs(struct bnx2x *bp)
45817 {
45818 /* RX_MODE controlling object */
45819- bnx2x_init_rx_mode_obj(bp, &bp->rx_mode_obj);
45820+ bnx2x_init_rx_mode_obj(bp);
45821
45822 /* multicast configuration controlling object */
45823 bnx2x_init_mcast_obj(bp, &bp->mcast_obj, bp->fp->cl_id, bp->fp->cid,
45824diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c
45825index 31297266..944cf6e 100644
45826--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c
45827+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.c
45828@@ -2329,15 +2329,14 @@ int bnx2x_config_rx_mode(struct bnx2x *bp,
45829 return rc;
45830 }
45831
45832-void bnx2x_init_rx_mode_obj(struct bnx2x *bp,
45833- struct bnx2x_rx_mode_obj *o)
45834+void bnx2x_init_rx_mode_obj(struct bnx2x *bp)
45835 {
45836 if (CHIP_IS_E1x(bp)) {
45837- o->wait_comp = bnx2x_empty_rx_mode_wait;
45838- o->config_rx_mode = bnx2x_set_rx_mode_e1x;
45839+ bp->rx_mode_obj.wait_comp = bnx2x_empty_rx_mode_wait;
45840+ bp->rx_mode_obj.config_rx_mode = bnx2x_set_rx_mode_e1x;
45841 } else {
45842- o->wait_comp = bnx2x_wait_rx_mode_comp_e2;
45843- o->config_rx_mode = bnx2x_set_rx_mode_e2;
45844+ bp->rx_mode_obj.wait_comp = bnx2x_wait_rx_mode_comp_e2;
45845+ bp->rx_mode_obj.config_rx_mode = bnx2x_set_rx_mode_e2;
45846 }
45847 }
45848
45849diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h
45850index 80f6c79..fb7d12d 100644
45851--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h
45852+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_sp.h
45853@@ -1340,8 +1340,7 @@ int bnx2x_vlan_mac_move(struct bnx2x *bp,
45854
45855 /********************* RX MODE ****************/
45856
45857-void bnx2x_init_rx_mode_obj(struct bnx2x *bp,
45858- struct bnx2x_rx_mode_obj *o);
45859+void bnx2x_init_rx_mode_obj(struct bnx2x *bp);
45860
45861 /**
45862 * bnx2x_config_rx_mode - Send and RX_MODE ramrod according to the provided parameters.
45863diff --git a/drivers/net/ethernet/broadcom/tg3.h b/drivers/net/ethernet/broadcom/tg3.h
45864index 04321e5..b51cdc4 100644
45865--- a/drivers/net/ethernet/broadcom/tg3.h
45866+++ b/drivers/net/ethernet/broadcom/tg3.h
45867@@ -150,6 +150,7 @@
45868 #define CHIPREV_ID_5750_A0 0x4000
45869 #define CHIPREV_ID_5750_A1 0x4001
45870 #define CHIPREV_ID_5750_A3 0x4003
45871+#define CHIPREV_ID_5750_C1 0x4201
45872 #define CHIPREV_ID_5750_C2 0x4202
45873 #define CHIPREV_ID_5752_A0_HW 0x5000
45874 #define CHIPREV_ID_5752_A0 0x6000
45875diff --git a/drivers/net/ethernet/brocade/bna/bna_enet.c b/drivers/net/ethernet/brocade/bna/bna_enet.c
45876index 13f9636..228040f 100644
45877--- a/drivers/net/ethernet/brocade/bna/bna_enet.c
45878+++ b/drivers/net/ethernet/brocade/bna/bna_enet.c
45879@@ -1690,10 +1690,10 @@ bna_cb_ioceth_reset(void *arg)
45880 }
45881
45882 static struct bfa_ioc_cbfn bna_ioceth_cbfn = {
45883- bna_cb_ioceth_enable,
45884- bna_cb_ioceth_disable,
45885- bna_cb_ioceth_hbfail,
45886- bna_cb_ioceth_reset
45887+ .enable_cbfn = bna_cb_ioceth_enable,
45888+ .disable_cbfn = bna_cb_ioceth_disable,
45889+ .hbfail_cbfn = bna_cb_ioceth_hbfail,
45890+ .reset_cbfn = bna_cb_ioceth_reset
45891 };
45892
45893 static void bna_attr_init(struct bna_ioceth *ioceth)
45894diff --git a/drivers/net/ethernet/chelsio/cxgb3/l2t.h b/drivers/net/ethernet/chelsio/cxgb3/l2t.h
45895index 8cffcdf..aadf043 100644
45896--- a/drivers/net/ethernet/chelsio/cxgb3/l2t.h
45897+++ b/drivers/net/ethernet/chelsio/cxgb3/l2t.h
45898@@ -87,7 +87,7 @@ typedef void (*arp_failure_handler_func)(struct t3cdev * dev,
45899 */
45900 struct l2t_skb_cb {
45901 arp_failure_handler_func arp_failure_handler;
45902-};
45903+} __no_const;
45904
45905 #define L2T_SKB_CB(skb) ((struct l2t_skb_cb *)(skb)->cb)
45906
45907diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
45908index 24e16e3..bfe6ef2 100644
45909--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
45910+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c
45911@@ -2139,7 +2139,7 @@ static void get_regs(struct net_device *dev, struct ethtool_regs *regs,
45912
45913 int i;
45914 struct adapter *ap = netdev2adap(dev);
45915- static const unsigned int *reg_ranges;
45916+ const unsigned int *reg_ranges;
45917 int arr_size = 0, buf_size = 0;
45918
45919 if (is_t4(ap->params.chip)) {
45920diff --git a/drivers/net/ethernet/dec/tulip/de4x5.c b/drivers/net/ethernet/dec/tulip/de4x5.c
45921index c05b66d..ed69872 100644
45922--- a/drivers/net/ethernet/dec/tulip/de4x5.c
45923+++ b/drivers/net/ethernet/dec/tulip/de4x5.c
45924@@ -5388,7 +5388,7 @@ de4x5_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
45925 for (i=0; i<ETH_ALEN; i++) {
45926 tmp.addr[i] = dev->dev_addr[i];
45927 }
45928- if (copy_to_user(ioc->data, tmp.addr, ioc->len)) return -EFAULT;
45929+ if (ioc->len > sizeof tmp.addr || copy_to_user(ioc->data, tmp.addr, ioc->len)) return -EFAULT;
45930 break;
45931
45932 case DE4X5_SET_HWADDR: /* Set the hardware address */
45933@@ -5428,7 +5428,7 @@ de4x5_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
45934 spin_lock_irqsave(&lp->lock, flags);
45935 memcpy(&statbuf, &lp->pktStats, ioc->len);
45936 spin_unlock_irqrestore(&lp->lock, flags);
45937- if (copy_to_user(ioc->data, &statbuf, ioc->len))
45938+ if (ioc->len > sizeof statbuf || copy_to_user(ioc->data, &statbuf, ioc->len))
45939 return -EFAULT;
45940 break;
45941 }
45942diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
45943index dc19bc5..f2d4548 100644
45944--- a/drivers/net/ethernet/emulex/benet/be_main.c
45945+++ b/drivers/net/ethernet/emulex/benet/be_main.c
45946@@ -535,7 +535,7 @@ static void accumulate_16bit_val(u32 *acc, u16 val)
45947
45948 if (wrapped)
45949 newacc += 65536;
45950- ACCESS_ONCE(*acc) = newacc;
45951+ ACCESS_ONCE_RW(*acc) = newacc;
45952 }
45953
45954 static void populate_erx_stats(struct be_adapter *adapter,
45955diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c
45956index 68069ea..c4484f6 100644
45957--- a/drivers/net/ethernet/faraday/ftgmac100.c
45958+++ b/drivers/net/ethernet/faraday/ftgmac100.c
45959@@ -30,6 +30,8 @@
45960 #include <linux/netdevice.h>
45961 #include <linux/phy.h>
45962 #include <linux/platform_device.h>
45963+#include <linux/interrupt.h>
45964+#include <linux/irqreturn.h>
45965 #include <net/ip.h>
45966
45967 #include "ftgmac100.h"
45968diff --git a/drivers/net/ethernet/faraday/ftmac100.c b/drivers/net/ethernet/faraday/ftmac100.c
45969index 8be5b40..081bc1b 100644
45970--- a/drivers/net/ethernet/faraday/ftmac100.c
45971+++ b/drivers/net/ethernet/faraday/ftmac100.c
45972@@ -31,6 +31,8 @@
45973 #include <linux/module.h>
45974 #include <linux/netdevice.h>
45975 #include <linux/platform_device.h>
45976+#include <linux/interrupt.h>
45977+#include <linux/irqreturn.h>
45978
45979 #include "ftmac100.h"
45980
45981diff --git a/drivers/net/ethernet/intel/i40e/i40e_ptp.c b/drivers/net/ethernet/intel/i40e/i40e_ptp.c
45982index e61e637..9117795 100644
45983--- a/drivers/net/ethernet/intel/i40e/i40e_ptp.c
45984+++ b/drivers/net/ethernet/intel/i40e/i40e_ptp.c
45985@@ -436,7 +436,7 @@ void i40e_ptp_set_increment(struct i40e_pf *pf)
45986 wr32(hw, I40E_PRTTSYN_INC_H, incval >> 32);
45987
45988 /* Update the base adjustement value. */
45989- ACCESS_ONCE(pf->ptp_base_adj) = incval;
45990+ ACCESS_ONCE_RW(pf->ptp_base_adj) = incval;
45991 smp_mb(); /* Force the above update. */
45992 }
45993
45994diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
45995index 8902ae6..e7bcdce 100644
45996--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
45997+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c
45998@@ -771,7 +771,7 @@ void ixgbe_ptp_start_cyclecounter(struct ixgbe_adapter *adapter)
45999 }
46000
46001 /* update the base incval used to calculate frequency adjustment */
46002- ACCESS_ONCE(adapter->base_incval) = incval;
46003+ ACCESS_ONCE_RW(adapter->base_incval) = incval;
46004 smp_mb();
46005
46006 /* need lock to prevent incorrect read while modifying cyclecounter */
46007diff --git a/drivers/net/ethernet/neterion/vxge/vxge-config.c b/drivers/net/ethernet/neterion/vxge/vxge-config.c
46008index 089b713..28d87ae 100644
46009--- a/drivers/net/ethernet/neterion/vxge/vxge-config.c
46010+++ b/drivers/net/ethernet/neterion/vxge/vxge-config.c
46011@@ -3461,7 +3461,10 @@ __vxge_hw_fifo_create(struct __vxge_hw_vpath_handle *vp,
46012 struct __vxge_hw_fifo *fifo;
46013 struct vxge_hw_fifo_config *config;
46014 u32 txdl_size, txdl_per_memblock;
46015- struct vxge_hw_mempool_cbs fifo_mp_callback;
46016+ static struct vxge_hw_mempool_cbs fifo_mp_callback = {
46017+ .item_func_alloc = __vxge_hw_fifo_mempool_item_alloc,
46018+ };
46019+
46020 struct __vxge_hw_virtualpath *vpath;
46021
46022 if ((vp == NULL) || (attr == NULL)) {
46023@@ -3544,8 +3547,6 @@ __vxge_hw_fifo_create(struct __vxge_hw_vpath_handle *vp,
46024 goto exit;
46025 }
46026
46027- fifo_mp_callback.item_func_alloc = __vxge_hw_fifo_mempool_item_alloc;
46028-
46029 fifo->mempool =
46030 __vxge_hw_mempool_create(vpath->hldev,
46031 fifo->config->memblock_size,
46032diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
46033index ba20c72..f30c0fe 100644
46034--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
46035+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_init.c
46036@@ -2176,7 +2176,9 @@ int qlcnic_83xx_configure_opmode(struct qlcnic_adapter *adapter)
46037 max_tx_rings = QLCNIC_MAX_VNIC_TX_RINGS;
46038 } else if (ret == QLC_83XX_DEFAULT_OPMODE) {
46039 ahw->nic_mode = QLCNIC_DEFAULT_MODE;
46040- adapter->nic_ops->init_driver = qlcnic_83xx_init_default_driver;
46041+ pax_open_kernel();
46042+ *(void **)&adapter->nic_ops->init_driver = qlcnic_83xx_init_default_driver;
46043+ pax_close_kernel();
46044 ahw->idc.state_entry = qlcnic_83xx_idc_ready_state_entry;
46045 max_sds_rings = QLCNIC_MAX_SDS_RINGS;
46046 max_tx_rings = QLCNIC_MAX_TX_RINGS;
46047diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c
46048index be7d7a6..a8983f8 100644
46049--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c
46050+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_vnic.c
46051@@ -207,17 +207,23 @@ int qlcnic_83xx_config_vnic_opmode(struct qlcnic_adapter *adapter)
46052 case QLCNIC_NON_PRIV_FUNC:
46053 ahw->op_mode = QLCNIC_NON_PRIV_FUNC;
46054 ahw->idc.state_entry = qlcnic_83xx_idc_ready_state_entry;
46055- nic_ops->init_driver = qlcnic_83xx_init_non_privileged_vnic;
46056+ pax_open_kernel();
46057+ *(void **)&nic_ops->init_driver = qlcnic_83xx_init_non_privileged_vnic;
46058+ pax_close_kernel();
46059 break;
46060 case QLCNIC_PRIV_FUNC:
46061 ahw->op_mode = QLCNIC_PRIV_FUNC;
46062 ahw->idc.state_entry = qlcnic_83xx_idc_vnic_pf_entry;
46063- nic_ops->init_driver = qlcnic_83xx_init_privileged_vnic;
46064+ pax_open_kernel();
46065+ *(void **)&nic_ops->init_driver = qlcnic_83xx_init_privileged_vnic;
46066+ pax_close_kernel();
46067 break;
46068 case QLCNIC_MGMT_FUNC:
46069 ahw->op_mode = QLCNIC_MGMT_FUNC;
46070 ahw->idc.state_entry = qlcnic_83xx_idc_ready_state_entry;
46071- nic_ops->init_driver = qlcnic_83xx_init_mgmt_vnic;
46072+ pax_open_kernel();
46073+ *(void **)&nic_ops->init_driver = qlcnic_83xx_init_mgmt_vnic;
46074+ pax_close_kernel();
46075 break;
46076 default:
46077 dev_err(&adapter->pdev->dev, "Invalid Virtual NIC opmode\n");
46078diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c
46079index 37b979b..50f5b95 100644
46080--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c
46081+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_minidump.c
46082@@ -1217,7 +1217,7 @@ flash_temp:
46083 int qlcnic_dump_fw(struct qlcnic_adapter *adapter)
46084 {
46085 struct qlcnic_fw_dump *fw_dump = &adapter->ahw->fw_dump;
46086- static const struct qlcnic_dump_operations *fw_dump_ops;
46087+ const struct qlcnic_dump_operations *fw_dump_ops;
46088 struct qlcnic_83xx_dump_template_hdr *hdr_83xx;
46089 u32 entry_offset, dump, no_entries, buf_offset = 0;
46090 int i, k, ops_cnt, ops_index, dump_size = 0;
46091diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
46092index aa1c079..2b1a3e8 100644
46093--- a/drivers/net/ethernet/realtek/r8169.c
46094+++ b/drivers/net/ethernet/realtek/r8169.c
46095@@ -758,22 +758,22 @@ struct rtl8169_private {
46096 struct mdio_ops {
46097 void (*write)(struct rtl8169_private *, int, int);
46098 int (*read)(struct rtl8169_private *, int);
46099- } mdio_ops;
46100+ } __no_const mdio_ops;
46101
46102 struct pll_power_ops {
46103 void (*down)(struct rtl8169_private *);
46104 void (*up)(struct rtl8169_private *);
46105- } pll_power_ops;
46106+ } __no_const pll_power_ops;
46107
46108 struct jumbo_ops {
46109 void (*enable)(struct rtl8169_private *);
46110 void (*disable)(struct rtl8169_private *);
46111- } jumbo_ops;
46112+ } __no_const jumbo_ops;
46113
46114 struct csi_ops {
46115 void (*write)(struct rtl8169_private *, int, int);
46116 u32 (*read)(struct rtl8169_private *, int);
46117- } csi_ops;
46118+ } __no_const csi_ops;
46119
46120 int (*set_speed)(struct net_device *, u8 aneg, u16 sp, u8 dpx, u32 adv);
46121 int (*get_settings)(struct net_device *, struct ethtool_cmd *);
46122diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
46123index 6b861e3..204ac86 100644
46124--- a/drivers/net/ethernet/sfc/ptp.c
46125+++ b/drivers/net/ethernet/sfc/ptp.c
46126@@ -822,7 +822,7 @@ static int efx_ptp_synchronize(struct efx_nic *efx, unsigned int num_readings)
46127 ptp->start.dma_addr);
46128
46129 /* Clear flag that signals MC ready */
46130- ACCESS_ONCE(*start) = 0;
46131+ ACCESS_ONCE_RW(*start) = 0;
46132 rc = efx_mcdi_rpc_start(efx, MC_CMD_PTP, synch_buf,
46133 MC_CMD_PTP_IN_SYNCHRONIZE_LEN);
46134 EFX_BUG_ON_PARANOID(rc);
46135diff --git a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
46136index 50617c5..b13724c 100644
46137--- a/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
46138+++ b/drivers/net/ethernet/stmicro/stmmac/mmc_core.c
46139@@ -140,8 +140,8 @@ void dwmac_mmc_ctrl(void __iomem *ioaddr, unsigned int mode)
46140
46141 writel(value, ioaddr + MMC_CNTRL);
46142
46143- pr_debug("stmmac: MMC ctrl register (offset 0x%x): 0x%08x\n",
46144- MMC_CNTRL, value);
46145+// pr_debug("stmmac: MMC ctrl register (offset 0x%x): 0x%08x\n",
46146+// MMC_CNTRL, value);
46147 }
46148
46149 /* To mask all all interrupts.*/
46150diff --git a/drivers/net/hyperv/hyperv_net.h b/drivers/net/hyperv/hyperv_net.h
46151index d18f711d..5755800 100644
46152--- a/drivers/net/hyperv/hyperv_net.h
46153+++ b/drivers/net/hyperv/hyperv_net.h
46154@@ -101,7 +101,7 @@ struct rndis_device {
46155
46156 enum rndis_device_state state;
46157 bool link_state;
46158- atomic_t new_req_id;
46159+ atomic_unchecked_t new_req_id;
46160
46161 spinlock_t request_lock;
46162 struct list_head req_list;
46163diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
46164index 143a98c..d54fbaa 100644
46165--- a/drivers/net/hyperv/rndis_filter.c
46166+++ b/drivers/net/hyperv/rndis_filter.c
46167@@ -100,7 +100,7 @@ static struct rndis_request *get_rndis_request(struct rndis_device *dev,
46168 * template
46169 */
46170 set = &rndis_msg->msg.set_req;
46171- set->req_id = atomic_inc_return(&dev->new_req_id);
46172+ set->req_id = atomic_inc_return_unchecked(&dev->new_req_id);
46173
46174 /* Add to the request list */
46175 spin_lock_irqsave(&dev->request_lock, flags);
46176@@ -834,7 +834,7 @@ static void rndis_filter_halt_device(struct rndis_device *dev)
46177
46178 /* Setup the rndis set */
46179 halt = &request->request_msg.msg.halt_req;
46180- halt->req_id = atomic_inc_return(&dev->new_req_id);
46181+ halt->req_id = atomic_inc_return_unchecked(&dev->new_req_id);
46182
46183 /* Ignore return since this msg is optional. */
46184 rndis_filter_send_request(dev, request);
46185diff --git a/drivers/net/ieee802154/fakehard.c b/drivers/net/ieee802154/fakehard.c
46186index 78f18be..1d19c62 100644
46187--- a/drivers/net/ieee802154/fakehard.c
46188+++ b/drivers/net/ieee802154/fakehard.c
46189@@ -364,7 +364,7 @@ static int ieee802154fake_probe(struct platform_device *pdev)
46190 phy->transmit_power = 0xbf;
46191
46192 dev->netdev_ops = &fake_ops;
46193- dev->ml_priv = &fake_mlme;
46194+ dev->ml_priv = (void *)&fake_mlme;
46195
46196 priv = netdev_priv(dev);
46197 priv->phy = phy;
46198diff --git a/drivers/net/macvlan.c b/drivers/net/macvlan.c
46199index 7eec598..90b8428 100644
46200--- a/drivers/net/macvlan.c
46201+++ b/drivers/net/macvlan.c
46202@@ -984,13 +984,15 @@ static const struct nla_policy macvlan_policy[IFLA_MACVLAN_MAX + 1] = {
46203 int macvlan_link_register(struct rtnl_link_ops *ops)
46204 {
46205 /* common fields */
46206- ops->priv_size = sizeof(struct macvlan_dev);
46207- ops->validate = macvlan_validate;
46208- ops->maxtype = IFLA_MACVLAN_MAX;
46209- ops->policy = macvlan_policy;
46210- ops->changelink = macvlan_changelink;
46211- ops->get_size = macvlan_get_size;
46212- ops->fill_info = macvlan_fill_info;
46213+ pax_open_kernel();
46214+ *(size_t *)&ops->priv_size = sizeof(struct macvlan_dev);
46215+ *(void **)&ops->validate = macvlan_validate;
46216+ *(int *)&ops->maxtype = IFLA_MACVLAN_MAX;
46217+ *(const void **)&ops->policy = macvlan_policy;
46218+ *(void **)&ops->changelink = macvlan_changelink;
46219+ *(void **)&ops->get_size = macvlan_get_size;
46220+ *(void **)&ops->fill_info = macvlan_fill_info;
46221+ pax_close_kernel();
46222
46223 return rtnl_link_register(ops);
46224 };
46225@@ -1044,7 +1046,7 @@ static int macvlan_device_event(struct notifier_block *unused,
46226 return NOTIFY_DONE;
46227 }
46228
46229-static struct notifier_block macvlan_notifier_block __read_mostly = {
46230+static struct notifier_block macvlan_notifier_block = {
46231 .notifier_call = macvlan_device_event,
46232 };
46233
46234diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
46235index 3381c4f..dea5fd5 100644
46236--- a/drivers/net/macvtap.c
46237+++ b/drivers/net/macvtap.c
46238@@ -1020,7 +1020,7 @@ static long macvtap_ioctl(struct file *file, unsigned int cmd,
46239 }
46240
46241 ret = 0;
46242- if (copy_to_user(&ifr->ifr_name, vlan->dev->name, IFNAMSIZ) ||
46243+ if (copy_to_user(ifr->ifr_name, vlan->dev->name, IFNAMSIZ) ||
46244 put_user(q->flags, &ifr->ifr_flags))
46245 ret = -EFAULT;
46246 macvtap_put_vlan(vlan);
46247@@ -1190,7 +1190,7 @@ static int macvtap_device_event(struct notifier_block *unused,
46248 return NOTIFY_DONE;
46249 }
46250
46251-static struct notifier_block macvtap_notifier_block __read_mostly = {
46252+static struct notifier_block macvtap_notifier_block = {
46253 .notifier_call = macvtap_device_event,
46254 };
46255
46256diff --git a/drivers/net/phy/mdio-bitbang.c b/drivers/net/phy/mdio-bitbang.c
46257index daec9b0..6428fcb 100644
46258--- a/drivers/net/phy/mdio-bitbang.c
46259+++ b/drivers/net/phy/mdio-bitbang.c
46260@@ -234,6 +234,7 @@ void free_mdio_bitbang(struct mii_bus *bus)
46261 struct mdiobb_ctrl *ctrl = bus->priv;
46262
46263 module_put(ctrl->ops->owner);
46264+ mdiobus_unregister(bus);
46265 mdiobus_free(bus);
46266 }
46267 EXPORT_SYMBOL(free_mdio_bitbang);
46268diff --git a/drivers/net/ppp/ppp_generic.c b/drivers/net/ppp/ppp_generic.c
46269index e3923eb..2a0373b 100644
46270--- a/drivers/net/ppp/ppp_generic.c
46271+++ b/drivers/net/ppp/ppp_generic.c
46272@@ -1012,7 +1012,6 @@ ppp_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
46273 void __user *addr = (void __user *) ifr->ifr_ifru.ifru_data;
46274 struct ppp_stats stats;
46275 struct ppp_comp_stats cstats;
46276- char *vers;
46277
46278 switch (cmd) {
46279 case SIOCGPPPSTATS:
46280@@ -1034,8 +1033,7 @@ ppp_net_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
46281 break;
46282
46283 case SIOCGPPPVER:
46284- vers = PPP_VERSION;
46285- if (copy_to_user(addr, vers, strlen(vers) + 1))
46286+ if (copy_to_user(addr, PPP_VERSION, sizeof(PPP_VERSION)))
46287 break;
46288 err = 0;
46289 break;
46290diff --git a/drivers/net/slip/slhc.c b/drivers/net/slip/slhc.c
46291index 1252d9c..80e660b 100644
46292--- a/drivers/net/slip/slhc.c
46293+++ b/drivers/net/slip/slhc.c
46294@@ -488,7 +488,7 @@ slhc_uncompress(struct slcompress *comp, unsigned char *icp, int isize)
46295 register struct tcphdr *thp;
46296 register struct iphdr *ip;
46297 register struct cstate *cs;
46298- int len, hdrlen;
46299+ long len, hdrlen;
46300 unsigned char *cp = icp;
46301
46302 /* We've got a compressed packet; read the change byte */
46303diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
46304index ce4989b..b40b328 100644
46305--- a/drivers/net/team/team.c
46306+++ b/drivers/net/team/team.c
46307@@ -2868,7 +2868,7 @@ static int team_device_event(struct notifier_block *unused,
46308 return NOTIFY_DONE;
46309 }
46310
46311-static struct notifier_block team_notifier_block __read_mostly = {
46312+static struct notifier_block team_notifier_block = {
46313 .notifier_call = team_device_event,
46314 };
46315
46316diff --git a/drivers/net/tun.c b/drivers/net/tun.c
46317index ee328ba..c4a0041 100644
46318--- a/drivers/net/tun.c
46319+++ b/drivers/net/tun.c
46320@@ -1876,7 +1876,7 @@ unlock:
46321 }
46322
46323 static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
46324- unsigned long arg, int ifreq_len)
46325+ unsigned long arg, size_t ifreq_len)
46326 {
46327 struct tun_file *tfile = file->private_data;
46328 struct tun_struct *tun;
46329@@ -1889,6 +1889,9 @@ static long __tun_chr_ioctl(struct file *file, unsigned int cmd,
46330 unsigned int ifindex;
46331 int ret;
46332
46333+ if (ifreq_len > sizeof ifr)
46334+ return -EFAULT;
46335+
46336 if (cmd == TUNSETIFF || cmd == TUNSETQUEUE || _IOC_TYPE(cmd) == 0x89) {
46337 if (copy_from_user(&ifr, argp, ifreq_len))
46338 return -EFAULT;
46339diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
46340index 660bd5e..ac59452 100644
46341--- a/drivers/net/usb/hso.c
46342+++ b/drivers/net/usb/hso.c
46343@@ -71,7 +71,7 @@
46344 #include <asm/byteorder.h>
46345 #include <linux/serial_core.h>
46346 #include <linux/serial.h>
46347-
46348+#include <asm/local.h>
46349
46350 #define MOD_AUTHOR "Option Wireless"
46351 #define MOD_DESCRIPTION "USB High Speed Option driver"
46352@@ -1179,7 +1179,7 @@ static void put_rxbuf_data_and_resubmit_ctrl_urb(struct hso_serial *serial)
46353 struct urb *urb;
46354
46355 urb = serial->rx_urb[0];
46356- if (serial->port.count > 0) {
46357+ if (atomic_read(&serial->port.count) > 0) {
46358 count = put_rxbuf_data(urb, serial);
46359 if (count == -1)
46360 return;
46361@@ -1217,7 +1217,7 @@ static void hso_std_serial_read_bulk_callback(struct urb *urb)
46362 DUMP1(urb->transfer_buffer, urb->actual_length);
46363
46364 /* Anyone listening? */
46365- if (serial->port.count == 0)
46366+ if (atomic_read(&serial->port.count) == 0)
46367 return;
46368
46369 if (serial->parent->port_spec & HSO_INFO_CRC_BUG)
46370@@ -1287,8 +1287,7 @@ static int hso_serial_open(struct tty_struct *tty, struct file *filp)
46371 tty_port_tty_set(&serial->port, tty);
46372
46373 /* check for port already opened, if not set the termios */
46374- serial->port.count++;
46375- if (serial->port.count == 1) {
46376+ if (atomic_inc_return(&serial->port.count) == 1) {
46377 serial->rx_state = RX_IDLE;
46378 /* Force default termio settings */
46379 _hso_serial_set_termios(tty, NULL);
46380@@ -1300,7 +1299,7 @@ static int hso_serial_open(struct tty_struct *tty, struct file *filp)
46381 result = hso_start_serial_device(serial->parent, GFP_KERNEL);
46382 if (result) {
46383 hso_stop_serial_device(serial->parent);
46384- serial->port.count--;
46385+ atomic_dec(&serial->port.count);
46386 kref_put(&serial->parent->ref, hso_serial_ref_free);
46387 }
46388 } else {
46389@@ -1337,10 +1336,10 @@ static void hso_serial_close(struct tty_struct *tty, struct file *filp)
46390
46391 /* reset the rts and dtr */
46392 /* do the actual close */
46393- serial->port.count--;
46394+ atomic_dec(&serial->port.count);
46395
46396- if (serial->port.count <= 0) {
46397- serial->port.count = 0;
46398+ if (atomic_read(&serial->port.count) <= 0) {
46399+ atomic_set(&serial->port.count, 0);
46400 tty_port_tty_set(&serial->port, NULL);
46401 if (!usb_gone)
46402 hso_stop_serial_device(serial->parent);
46403@@ -1416,7 +1415,7 @@ static void hso_serial_set_termios(struct tty_struct *tty, struct ktermios *old)
46404
46405 /* the actual setup */
46406 spin_lock_irqsave(&serial->serial_lock, flags);
46407- if (serial->port.count)
46408+ if (atomic_read(&serial->port.count))
46409 _hso_serial_set_termios(tty, old);
46410 else
46411 tty->termios = *old;
46412@@ -1885,7 +1884,7 @@ static void intr_callback(struct urb *urb)
46413 D1("Pending read interrupt on port %d\n", i);
46414 spin_lock(&serial->serial_lock);
46415 if (serial->rx_state == RX_IDLE &&
46416- serial->port.count > 0) {
46417+ atomic_read(&serial->port.count) > 0) {
46418 /* Setup and send a ctrl req read on
46419 * port i */
46420 if (!serial->rx_urb_filled[0]) {
46421@@ -3061,7 +3060,7 @@ static int hso_resume(struct usb_interface *iface)
46422 /* Start all serial ports */
46423 for (i = 0; i < HSO_SERIAL_TTY_MINORS; i++) {
46424 if (serial_table[i] && (serial_table[i]->interface == iface)) {
46425- if (dev2ser(serial_table[i])->port.count) {
46426+ if (atomic_read(&dev2ser(serial_table[i])->port.count)) {
46427 result =
46428 hso_start_serial_device(serial_table[i], GFP_NOIO);
46429 hso_kick_transmit(dev2ser(serial_table[i]));
46430diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
46431index 3fbfb08..2c16265 100644
46432--- a/drivers/net/usb/r8152.c
46433+++ b/drivers/net/usb/r8152.c
46434@@ -567,7 +567,7 @@ struct r8152 {
46435 void (*up)(struct r8152 *);
46436 void (*down)(struct r8152 *);
46437 void (*unload)(struct r8152 *);
46438- } rtl_ops;
46439+ } __no_const rtl_ops;
46440
46441 int intr_interval;
46442 u32 saved_wolopts;
46443diff --git a/drivers/net/usb/sierra_net.c b/drivers/net/usb/sierra_net.c
46444index a2515887..6d13233 100644
46445--- a/drivers/net/usb/sierra_net.c
46446+++ b/drivers/net/usb/sierra_net.c
46447@@ -51,7 +51,7 @@ static const char driver_name[] = "sierra_net";
46448 /* atomic counter partially included in MAC address to make sure 2 devices
46449 * do not end up with the same MAC - concept breaks in case of > 255 ifaces
46450 */
46451-static atomic_t iface_counter = ATOMIC_INIT(0);
46452+static atomic_unchecked_t iface_counter = ATOMIC_INIT(0);
46453
46454 /*
46455 * SYNC Timer Delay definition used to set the expiry time
46456@@ -697,7 +697,7 @@ static int sierra_net_bind(struct usbnet *dev, struct usb_interface *intf)
46457 dev->net->netdev_ops = &sierra_net_device_ops;
46458
46459 /* change MAC addr to include, ifacenum, and to be unique */
46460- dev->net->dev_addr[ETH_ALEN-2] = atomic_inc_return(&iface_counter);
46461+ dev->net->dev_addr[ETH_ALEN-2] = atomic_inc_return_unchecked(&iface_counter);
46462 dev->net->dev_addr[ETH_ALEN-1] = ifacenum;
46463
46464 /* we will have to manufacture ethernet headers, prepare template */
46465diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
46466index 8a852b5..668a4b6 100644
46467--- a/drivers/net/virtio_net.c
46468+++ b/drivers/net/virtio_net.c
46469@@ -47,7 +47,7 @@ module_param(gso, bool, 0444);
46470 #define RECEIVE_AVG_WEIGHT 64
46471
46472 /* Minimum alignment for mergeable packet buffers. */
46473-#define MERGEABLE_BUFFER_ALIGN max(L1_CACHE_BYTES, 256)
46474+#define MERGEABLE_BUFFER_ALIGN max(L1_CACHE_BYTES, 256UL)
46475
46476 #define VIRTNET_DRIVER_VERSION "1.0.0"
46477
46478diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
46479index 77dcf92..549924a 100644
46480--- a/drivers/net/vxlan.c
46481+++ b/drivers/net/vxlan.c
46482@@ -2839,7 +2839,7 @@ nla_put_failure:
46483 return -EMSGSIZE;
46484 }
46485
46486-static struct rtnl_link_ops vxlan_link_ops __read_mostly = {
46487+static struct rtnl_link_ops vxlan_link_ops = {
46488 .kind = "vxlan",
46489 .maxtype = IFLA_VXLAN_MAX,
46490 .policy = vxlan_policy,
46491@@ -2886,7 +2886,7 @@ static int vxlan_lowerdev_event(struct notifier_block *unused,
46492 return NOTIFY_DONE;
46493 }
46494
46495-static struct notifier_block vxlan_notifier_block __read_mostly = {
46496+static struct notifier_block vxlan_notifier_block = {
46497 .notifier_call = vxlan_lowerdev_event,
46498 };
46499
46500diff --git a/drivers/net/wan/lmc/lmc_media.c b/drivers/net/wan/lmc/lmc_media.c
46501index 5920c99..ff2e4a5 100644
46502--- a/drivers/net/wan/lmc/lmc_media.c
46503+++ b/drivers/net/wan/lmc/lmc_media.c
46504@@ -95,62 +95,63 @@ static inline void write_av9110_bit (lmc_softc_t *, int);
46505 static void write_av9110(lmc_softc_t *, u32, u32, u32, u32, u32);
46506
46507 lmc_media_t lmc_ds3_media = {
46508- lmc_ds3_init, /* special media init stuff */
46509- lmc_ds3_default, /* reset to default state */
46510- lmc_ds3_set_status, /* reset status to state provided */
46511- lmc_dummy_set_1, /* set clock source */
46512- lmc_dummy_set2_1, /* set line speed */
46513- lmc_ds3_set_100ft, /* set cable length */
46514- lmc_ds3_set_scram, /* set scrambler */
46515- lmc_ds3_get_link_status, /* get link status */
46516- lmc_dummy_set_1, /* set link status */
46517- lmc_ds3_set_crc_length, /* set CRC length */
46518- lmc_dummy_set_1, /* set T1 or E1 circuit type */
46519- lmc_ds3_watchdog
46520+ .init = lmc_ds3_init, /* special media init stuff */
46521+ .defaults = lmc_ds3_default, /* reset to default state */
46522+ .set_status = lmc_ds3_set_status, /* reset status to state provided */
46523+ .set_clock_source = lmc_dummy_set_1, /* set clock source */
46524+ .set_speed = lmc_dummy_set2_1, /* set line speed */
46525+ .set_cable_length = lmc_ds3_set_100ft, /* set cable length */
46526+ .set_scrambler = lmc_ds3_set_scram, /* set scrambler */
46527+ .get_link_status = lmc_ds3_get_link_status, /* get link status */
46528+ .set_link_status = lmc_dummy_set_1, /* set link status */
46529+ .set_crc_length = lmc_ds3_set_crc_length, /* set CRC length */
46530+ .set_circuit_type = lmc_dummy_set_1, /* set T1 or E1 circuit type */
46531+ .watchdog = lmc_ds3_watchdog
46532 };
46533
46534 lmc_media_t lmc_hssi_media = {
46535- lmc_hssi_init, /* special media init stuff */
46536- lmc_hssi_default, /* reset to default state */
46537- lmc_hssi_set_status, /* reset status to state provided */
46538- lmc_hssi_set_clock, /* set clock source */
46539- lmc_dummy_set2_1, /* set line speed */
46540- lmc_dummy_set_1, /* set cable length */
46541- lmc_dummy_set_1, /* set scrambler */
46542- lmc_hssi_get_link_status, /* get link status */
46543- lmc_hssi_set_link_status, /* set link status */
46544- lmc_hssi_set_crc_length, /* set CRC length */
46545- lmc_dummy_set_1, /* set T1 or E1 circuit type */
46546- lmc_hssi_watchdog
46547+ .init = lmc_hssi_init, /* special media init stuff */
46548+ .defaults = lmc_hssi_default, /* reset to default state */
46549+ .set_status = lmc_hssi_set_status, /* reset status to state provided */
46550+ .set_clock_source = lmc_hssi_set_clock, /* set clock source */
46551+ .set_speed = lmc_dummy_set2_1, /* set line speed */
46552+ .set_cable_length = lmc_dummy_set_1, /* set cable length */
46553+ .set_scrambler = lmc_dummy_set_1, /* set scrambler */
46554+ .get_link_status = lmc_hssi_get_link_status, /* get link status */
46555+ .set_link_status = lmc_hssi_set_link_status, /* set link status */
46556+ .set_crc_length = lmc_hssi_set_crc_length, /* set CRC length */
46557+ .set_circuit_type = lmc_dummy_set_1, /* set T1 or E1 circuit type */
46558+ .watchdog = lmc_hssi_watchdog
46559 };
46560
46561-lmc_media_t lmc_ssi_media = { lmc_ssi_init, /* special media init stuff */
46562- lmc_ssi_default, /* reset to default state */
46563- lmc_ssi_set_status, /* reset status to state provided */
46564- lmc_ssi_set_clock, /* set clock source */
46565- lmc_ssi_set_speed, /* set line speed */
46566- lmc_dummy_set_1, /* set cable length */
46567- lmc_dummy_set_1, /* set scrambler */
46568- lmc_ssi_get_link_status, /* get link status */
46569- lmc_ssi_set_link_status, /* set link status */
46570- lmc_ssi_set_crc_length, /* set CRC length */
46571- lmc_dummy_set_1, /* set T1 or E1 circuit type */
46572- lmc_ssi_watchdog
46573+lmc_media_t lmc_ssi_media = {
46574+ .init = lmc_ssi_init, /* special media init stuff */
46575+ .defaults = lmc_ssi_default, /* reset to default state */
46576+ .set_status = lmc_ssi_set_status, /* reset status to state provided */
46577+ .set_clock_source = lmc_ssi_set_clock, /* set clock source */
46578+ .set_speed = lmc_ssi_set_speed, /* set line speed */
46579+ .set_cable_length = lmc_dummy_set_1, /* set cable length */
46580+ .set_scrambler = lmc_dummy_set_1, /* set scrambler */
46581+ .get_link_status = lmc_ssi_get_link_status, /* get link status */
46582+ .set_link_status = lmc_ssi_set_link_status, /* set link status */
46583+ .set_crc_length = lmc_ssi_set_crc_length, /* set CRC length */
46584+ .set_circuit_type = lmc_dummy_set_1, /* set T1 or E1 circuit type */
46585+ .watchdog = lmc_ssi_watchdog
46586 };
46587
46588 lmc_media_t lmc_t1_media = {
46589- lmc_t1_init, /* special media init stuff */
46590- lmc_t1_default, /* reset to default state */
46591- lmc_t1_set_status, /* reset status to state provided */
46592- lmc_t1_set_clock, /* set clock source */
46593- lmc_dummy_set2_1, /* set line speed */
46594- lmc_dummy_set_1, /* set cable length */
46595- lmc_dummy_set_1, /* set scrambler */
46596- lmc_t1_get_link_status, /* get link status */
46597- lmc_dummy_set_1, /* set link status */
46598- lmc_t1_set_crc_length, /* set CRC length */
46599- lmc_t1_set_circuit_type, /* set T1 or E1 circuit type */
46600- lmc_t1_watchdog
46601+ .init = lmc_t1_init, /* special media init stuff */
46602+ .defaults = lmc_t1_default, /* reset to default state */
46603+ .set_status = lmc_t1_set_status, /* reset status to state provided */
46604+ .set_clock_source = lmc_t1_set_clock, /* set clock source */
46605+ .set_speed = lmc_dummy_set2_1, /* set line speed */
46606+ .set_cable_length = lmc_dummy_set_1, /* set cable length */
46607+ .set_scrambler = lmc_dummy_set_1, /* set scrambler */
46608+ .get_link_status = lmc_t1_get_link_status, /* get link status */
46609+ .set_link_status = lmc_dummy_set_1, /* set link status */
46610+ .set_crc_length = lmc_t1_set_crc_length, /* set CRC length */
46611+ .set_circuit_type = lmc_t1_set_circuit_type, /* set T1 or E1 circuit type */
46612+ .watchdog = lmc_t1_watchdog
46613 };
46614
46615 static void
46616diff --git a/drivers/net/wan/z85230.c b/drivers/net/wan/z85230.c
46617index feacc3b..5bac0de 100644
46618--- a/drivers/net/wan/z85230.c
46619+++ b/drivers/net/wan/z85230.c
46620@@ -485,9 +485,9 @@ static void z8530_status(struct z8530_channel *chan)
46621
46622 struct z8530_irqhandler z8530_sync =
46623 {
46624- z8530_rx,
46625- z8530_tx,
46626- z8530_status
46627+ .rx = z8530_rx,
46628+ .tx = z8530_tx,
46629+ .status = z8530_status
46630 };
46631
46632 EXPORT_SYMBOL(z8530_sync);
46633@@ -605,15 +605,15 @@ static void z8530_dma_status(struct z8530_channel *chan)
46634 }
46635
46636 static struct z8530_irqhandler z8530_dma_sync = {
46637- z8530_dma_rx,
46638- z8530_dma_tx,
46639- z8530_dma_status
46640+ .rx = z8530_dma_rx,
46641+ .tx = z8530_dma_tx,
46642+ .status = z8530_dma_status
46643 };
46644
46645 static struct z8530_irqhandler z8530_txdma_sync = {
46646- z8530_rx,
46647- z8530_dma_tx,
46648- z8530_dma_status
46649+ .rx = z8530_rx,
46650+ .tx = z8530_dma_tx,
46651+ .status = z8530_dma_status
46652 };
46653
46654 /**
46655@@ -680,9 +680,9 @@ static void z8530_status_clear(struct z8530_channel *chan)
46656
46657 struct z8530_irqhandler z8530_nop=
46658 {
46659- z8530_rx_clear,
46660- z8530_tx_clear,
46661- z8530_status_clear
46662+ .rx = z8530_rx_clear,
46663+ .tx = z8530_tx_clear,
46664+ .status = z8530_status_clear
46665 };
46666
46667
46668diff --git a/drivers/net/wimax/i2400m/rx.c b/drivers/net/wimax/i2400m/rx.c
46669index 0b60295..b8bfa5b 100644
46670--- a/drivers/net/wimax/i2400m/rx.c
46671+++ b/drivers/net/wimax/i2400m/rx.c
46672@@ -1359,7 +1359,7 @@ int i2400m_rx_setup(struct i2400m *i2400m)
46673 if (i2400m->rx_roq == NULL)
46674 goto error_roq_alloc;
46675
46676- rd = kcalloc(I2400M_RO_CIN + 1, sizeof(*i2400m->rx_roq[0].log),
46677+ rd = kcalloc(sizeof(*i2400m->rx_roq[0].log), I2400M_RO_CIN + 1,
46678 GFP_KERNEL);
46679 if (rd == NULL) {
46680 result = -ENOMEM;
46681diff --git a/drivers/net/wireless/airo.c b/drivers/net/wireless/airo.c
46682index 64747d4..17c4cf3 100644
46683--- a/drivers/net/wireless/airo.c
46684+++ b/drivers/net/wireless/airo.c
46685@@ -7846,7 +7846,7 @@ static int writerids(struct net_device *dev, aironet_ioctl *comp) {
46686 struct airo_info *ai = dev->ml_priv;
46687 int ridcode;
46688 int enabled;
46689- static int (* writer)(struct airo_info *, u16 rid, const void *, int, int);
46690+ int (* writer)(struct airo_info *, u16 rid, const void *, int, int);
46691 unsigned char *iobuf;
46692
46693 /* Only super-user can write RIDs */
46694diff --git a/drivers/net/wireless/at76c50x-usb.c b/drivers/net/wireless/at76c50x-usb.c
46695index 99b3bfa..9559372 100644
46696--- a/drivers/net/wireless/at76c50x-usb.c
46697+++ b/drivers/net/wireless/at76c50x-usb.c
46698@@ -353,7 +353,7 @@ static int at76_dfu_get_state(struct usb_device *udev, u8 *state)
46699 }
46700
46701 /* Convert timeout from the DFU status to jiffies */
46702-static inline unsigned long at76_get_timeout(struct dfu_status *s)
46703+static inline unsigned long __intentional_overflow(-1) at76_get_timeout(struct dfu_status *s)
46704 {
46705 return msecs_to_jiffies((s->poll_timeout[2] << 16)
46706 | (s->poll_timeout[1] << 8)
46707diff --git a/drivers/net/wireless/ath/ath10k/htc.c b/drivers/net/wireless/ath/ath10k/htc.c
46708index 7f1bccd..ca2ffca 100644
46709--- a/drivers/net/wireless/ath/ath10k/htc.c
46710+++ b/drivers/net/wireless/ath/ath10k/htc.c
46711@@ -840,7 +840,10 @@ void ath10k_htc_stop(struct ath10k_htc *htc)
46712 /* registered target arrival callback from the HIF layer */
46713 int ath10k_htc_init(struct ath10k *ar)
46714 {
46715- struct ath10k_hif_cb htc_callbacks;
46716+ static struct ath10k_hif_cb htc_callbacks = {
46717+ .rx_completion = ath10k_htc_rx_completion_handler,
46718+ .tx_completion = ath10k_htc_tx_completion_handler,
46719+ };
46720 struct ath10k_htc_ep *ep = NULL;
46721 struct ath10k_htc *htc = &ar->htc;
46722
46723@@ -850,8 +853,6 @@ int ath10k_htc_init(struct ath10k *ar)
46724 ath10k_htc_reset_endpoint_states(htc);
46725
46726 /* setup HIF layer callbacks */
46727- htc_callbacks.rx_completion = ath10k_htc_rx_completion_handler;
46728- htc_callbacks.tx_completion = ath10k_htc_tx_completion_handler;
46729 htc->ar = ar;
46730
46731 /* Get HIF default pipe for HTC message exchange */
46732diff --git a/drivers/net/wireless/ath/ath10k/htc.h b/drivers/net/wireless/ath/ath10k/htc.h
46733index 4716d33..a688310 100644
46734--- a/drivers/net/wireless/ath/ath10k/htc.h
46735+++ b/drivers/net/wireless/ath/ath10k/htc.h
46736@@ -271,13 +271,13 @@ enum ath10k_htc_ep_id {
46737
46738 struct ath10k_htc_ops {
46739 void (*target_send_suspend_complete)(struct ath10k *ar);
46740-};
46741+} __no_const;
46742
46743 struct ath10k_htc_ep_ops {
46744 void (*ep_tx_complete)(struct ath10k *, struct sk_buff *);
46745 void (*ep_rx_complete)(struct ath10k *, struct sk_buff *);
46746 void (*ep_tx_credits)(struct ath10k *);
46747-};
46748+} __no_const;
46749
46750 /* service connection information */
46751 struct ath10k_htc_svc_conn_req {
46752diff --git a/drivers/net/wireless/ath/ath9k/ar9002_mac.c b/drivers/net/wireless/ath/ath9k/ar9002_mac.c
46753index 741b38d..b7ae41b 100644
46754--- a/drivers/net/wireless/ath/ath9k/ar9002_mac.c
46755+++ b/drivers/net/wireless/ath/ath9k/ar9002_mac.c
46756@@ -220,8 +220,8 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
46757 ads->ds_txstatus6 = ads->ds_txstatus7 = 0;
46758 ads->ds_txstatus8 = ads->ds_txstatus9 = 0;
46759
46760- ACCESS_ONCE(ads->ds_link) = i->link;
46761- ACCESS_ONCE(ads->ds_data) = i->buf_addr[0];
46762+ ACCESS_ONCE_RW(ads->ds_link) = i->link;
46763+ ACCESS_ONCE_RW(ads->ds_data) = i->buf_addr[0];
46764
46765 ctl1 = i->buf_len[0] | (i->is_last ? 0 : AR_TxMore);
46766 ctl6 = SM(i->keytype, AR_EncrType);
46767@@ -235,26 +235,26 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
46768
46769 if ((i->is_first || i->is_last) &&
46770 i->aggr != AGGR_BUF_MIDDLE && i->aggr != AGGR_BUF_LAST) {
46771- ACCESS_ONCE(ads->ds_ctl2) = set11nTries(i->rates, 0)
46772+ ACCESS_ONCE_RW(ads->ds_ctl2) = set11nTries(i->rates, 0)
46773 | set11nTries(i->rates, 1)
46774 | set11nTries(i->rates, 2)
46775 | set11nTries(i->rates, 3)
46776 | (i->dur_update ? AR_DurUpdateEna : 0)
46777 | SM(0, AR_BurstDur);
46778
46779- ACCESS_ONCE(ads->ds_ctl3) = set11nRate(i->rates, 0)
46780+ ACCESS_ONCE_RW(ads->ds_ctl3) = set11nRate(i->rates, 0)
46781 | set11nRate(i->rates, 1)
46782 | set11nRate(i->rates, 2)
46783 | set11nRate(i->rates, 3);
46784 } else {
46785- ACCESS_ONCE(ads->ds_ctl2) = 0;
46786- ACCESS_ONCE(ads->ds_ctl3) = 0;
46787+ ACCESS_ONCE_RW(ads->ds_ctl2) = 0;
46788+ ACCESS_ONCE_RW(ads->ds_ctl3) = 0;
46789 }
46790
46791 if (!i->is_first) {
46792- ACCESS_ONCE(ads->ds_ctl0) = 0;
46793- ACCESS_ONCE(ads->ds_ctl1) = ctl1;
46794- ACCESS_ONCE(ads->ds_ctl6) = ctl6;
46795+ ACCESS_ONCE_RW(ads->ds_ctl0) = 0;
46796+ ACCESS_ONCE_RW(ads->ds_ctl1) = ctl1;
46797+ ACCESS_ONCE_RW(ads->ds_ctl6) = ctl6;
46798 return;
46799 }
46800
46801@@ -279,7 +279,7 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
46802 break;
46803 }
46804
46805- ACCESS_ONCE(ads->ds_ctl0) = (i->pkt_len & AR_FrameLen)
46806+ ACCESS_ONCE_RW(ads->ds_ctl0) = (i->pkt_len & AR_FrameLen)
46807 | (i->flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0)
46808 | SM(i->txpower, AR_XmitPower)
46809 | (i->flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0)
46810@@ -289,19 +289,19 @@ ar9002_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
46811 | (i->flags & ATH9K_TXDESC_RTSENA ? AR_RTSEnable :
46812 (i->flags & ATH9K_TXDESC_CTSENA ? AR_CTSEnable : 0));
46813
46814- ACCESS_ONCE(ads->ds_ctl1) = ctl1;
46815- ACCESS_ONCE(ads->ds_ctl6) = ctl6;
46816+ ACCESS_ONCE_RW(ads->ds_ctl1) = ctl1;
46817+ ACCESS_ONCE_RW(ads->ds_ctl6) = ctl6;
46818
46819 if (i->aggr == AGGR_BUF_MIDDLE || i->aggr == AGGR_BUF_LAST)
46820 return;
46821
46822- ACCESS_ONCE(ads->ds_ctl4) = set11nPktDurRTSCTS(i->rates, 0)
46823+ ACCESS_ONCE_RW(ads->ds_ctl4) = set11nPktDurRTSCTS(i->rates, 0)
46824 | set11nPktDurRTSCTS(i->rates, 1);
46825
46826- ACCESS_ONCE(ads->ds_ctl5) = set11nPktDurRTSCTS(i->rates, 2)
46827+ ACCESS_ONCE_RW(ads->ds_ctl5) = set11nPktDurRTSCTS(i->rates, 2)
46828 | set11nPktDurRTSCTS(i->rates, 3);
46829
46830- ACCESS_ONCE(ads->ds_ctl7) = set11nRateFlags(i->rates, 0)
46831+ ACCESS_ONCE_RW(ads->ds_ctl7) = set11nRateFlags(i->rates, 0)
46832 | set11nRateFlags(i->rates, 1)
46833 | set11nRateFlags(i->rates, 2)
46834 | set11nRateFlags(i->rates, 3)
46835diff --git a/drivers/net/wireless/ath/ath9k/ar9003_mac.c b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
46836index 729ffbf..49f50e3 100644
46837--- a/drivers/net/wireless/ath/ath9k/ar9003_mac.c
46838+++ b/drivers/net/wireless/ath/ath9k/ar9003_mac.c
46839@@ -39,47 +39,47 @@ ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
46840 (i->qcu << AR_TxQcuNum_S) | desc_len;
46841
46842 checksum += val;
46843- ACCESS_ONCE(ads->info) = val;
46844+ ACCESS_ONCE_RW(ads->info) = val;
46845
46846 checksum += i->link;
46847- ACCESS_ONCE(ads->link) = i->link;
46848+ ACCESS_ONCE_RW(ads->link) = i->link;
46849
46850 checksum += i->buf_addr[0];
46851- ACCESS_ONCE(ads->data0) = i->buf_addr[0];
46852+ ACCESS_ONCE_RW(ads->data0) = i->buf_addr[0];
46853 checksum += i->buf_addr[1];
46854- ACCESS_ONCE(ads->data1) = i->buf_addr[1];
46855+ ACCESS_ONCE_RW(ads->data1) = i->buf_addr[1];
46856 checksum += i->buf_addr[2];
46857- ACCESS_ONCE(ads->data2) = i->buf_addr[2];
46858+ ACCESS_ONCE_RW(ads->data2) = i->buf_addr[2];
46859 checksum += i->buf_addr[3];
46860- ACCESS_ONCE(ads->data3) = i->buf_addr[3];
46861+ ACCESS_ONCE_RW(ads->data3) = i->buf_addr[3];
46862
46863 checksum += (val = (i->buf_len[0] << AR_BufLen_S) & AR_BufLen);
46864- ACCESS_ONCE(ads->ctl3) = val;
46865+ ACCESS_ONCE_RW(ads->ctl3) = val;
46866 checksum += (val = (i->buf_len[1] << AR_BufLen_S) & AR_BufLen);
46867- ACCESS_ONCE(ads->ctl5) = val;
46868+ ACCESS_ONCE_RW(ads->ctl5) = val;
46869 checksum += (val = (i->buf_len[2] << AR_BufLen_S) & AR_BufLen);
46870- ACCESS_ONCE(ads->ctl7) = val;
46871+ ACCESS_ONCE_RW(ads->ctl7) = val;
46872 checksum += (val = (i->buf_len[3] << AR_BufLen_S) & AR_BufLen);
46873- ACCESS_ONCE(ads->ctl9) = val;
46874+ ACCESS_ONCE_RW(ads->ctl9) = val;
46875
46876 checksum = (u16) (((checksum & 0xffff) + (checksum >> 16)) & 0xffff);
46877- ACCESS_ONCE(ads->ctl10) = checksum;
46878+ ACCESS_ONCE_RW(ads->ctl10) = checksum;
46879
46880 if (i->is_first || i->is_last) {
46881- ACCESS_ONCE(ads->ctl13) = set11nTries(i->rates, 0)
46882+ ACCESS_ONCE_RW(ads->ctl13) = set11nTries(i->rates, 0)
46883 | set11nTries(i->rates, 1)
46884 | set11nTries(i->rates, 2)
46885 | set11nTries(i->rates, 3)
46886 | (i->dur_update ? AR_DurUpdateEna : 0)
46887 | SM(0, AR_BurstDur);
46888
46889- ACCESS_ONCE(ads->ctl14) = set11nRate(i->rates, 0)
46890+ ACCESS_ONCE_RW(ads->ctl14) = set11nRate(i->rates, 0)
46891 | set11nRate(i->rates, 1)
46892 | set11nRate(i->rates, 2)
46893 | set11nRate(i->rates, 3);
46894 } else {
46895- ACCESS_ONCE(ads->ctl13) = 0;
46896- ACCESS_ONCE(ads->ctl14) = 0;
46897+ ACCESS_ONCE_RW(ads->ctl13) = 0;
46898+ ACCESS_ONCE_RW(ads->ctl14) = 0;
46899 }
46900
46901 ads->ctl20 = 0;
46902@@ -89,17 +89,17 @@ ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
46903
46904 ctl17 = SM(i->keytype, AR_EncrType);
46905 if (!i->is_first) {
46906- ACCESS_ONCE(ads->ctl11) = 0;
46907- ACCESS_ONCE(ads->ctl12) = i->is_last ? 0 : AR_TxMore;
46908- ACCESS_ONCE(ads->ctl15) = 0;
46909- ACCESS_ONCE(ads->ctl16) = 0;
46910- ACCESS_ONCE(ads->ctl17) = ctl17;
46911- ACCESS_ONCE(ads->ctl18) = 0;
46912- ACCESS_ONCE(ads->ctl19) = 0;
46913+ ACCESS_ONCE_RW(ads->ctl11) = 0;
46914+ ACCESS_ONCE_RW(ads->ctl12) = i->is_last ? 0 : AR_TxMore;
46915+ ACCESS_ONCE_RW(ads->ctl15) = 0;
46916+ ACCESS_ONCE_RW(ads->ctl16) = 0;
46917+ ACCESS_ONCE_RW(ads->ctl17) = ctl17;
46918+ ACCESS_ONCE_RW(ads->ctl18) = 0;
46919+ ACCESS_ONCE_RW(ads->ctl19) = 0;
46920 return;
46921 }
46922
46923- ACCESS_ONCE(ads->ctl11) = (i->pkt_len & AR_FrameLen)
46924+ ACCESS_ONCE_RW(ads->ctl11) = (i->pkt_len & AR_FrameLen)
46925 | (i->flags & ATH9K_TXDESC_VMF ? AR_VirtMoreFrag : 0)
46926 | SM(i->txpower, AR_XmitPower)
46927 | (i->flags & ATH9K_TXDESC_VEOL ? AR_VEOL : 0)
46928@@ -135,22 +135,22 @@ ar9003_set_txdesc(struct ath_hw *ah, void *ds, struct ath_tx_info *i)
46929 val = (i->flags & ATH9K_TXDESC_PAPRD) >> ATH9K_TXDESC_PAPRD_S;
46930 ctl12 |= SM(val, AR_PAPRDChainMask);
46931
46932- ACCESS_ONCE(ads->ctl12) = ctl12;
46933- ACCESS_ONCE(ads->ctl17) = ctl17;
46934+ ACCESS_ONCE_RW(ads->ctl12) = ctl12;
46935+ ACCESS_ONCE_RW(ads->ctl17) = ctl17;
46936
46937- ACCESS_ONCE(ads->ctl15) = set11nPktDurRTSCTS(i->rates, 0)
46938+ ACCESS_ONCE_RW(ads->ctl15) = set11nPktDurRTSCTS(i->rates, 0)
46939 | set11nPktDurRTSCTS(i->rates, 1);
46940
46941- ACCESS_ONCE(ads->ctl16) = set11nPktDurRTSCTS(i->rates, 2)
46942+ ACCESS_ONCE_RW(ads->ctl16) = set11nPktDurRTSCTS(i->rates, 2)
46943 | set11nPktDurRTSCTS(i->rates, 3);
46944
46945- ACCESS_ONCE(ads->ctl18) = set11nRateFlags(i->rates, 0)
46946+ ACCESS_ONCE_RW(ads->ctl18) = set11nRateFlags(i->rates, 0)
46947 | set11nRateFlags(i->rates, 1)
46948 | set11nRateFlags(i->rates, 2)
46949 | set11nRateFlags(i->rates, 3)
46950 | SM(i->rtscts_rate, AR_RTSCTSRate);
46951
46952- ACCESS_ONCE(ads->ctl19) = AR_Not_Sounding;
46953+ ACCESS_ONCE_RW(ads->ctl19) = AR_Not_Sounding;
46954 }
46955
46956 static u16 ar9003_calc_ptr_chksum(struct ar9003_txc *ads)
46957diff --git a/drivers/net/wireless/ath/ath9k/hw.h b/drivers/net/wireless/ath/ath9k/hw.h
46958index 0acd4b5..0591c91 100644
46959--- a/drivers/net/wireless/ath/ath9k/hw.h
46960+++ b/drivers/net/wireless/ath/ath9k/hw.h
46961@@ -629,7 +629,7 @@ struct ath_hw_private_ops {
46962
46963 /* ANI */
46964 void (*ani_cache_ini_regs)(struct ath_hw *ah);
46965-};
46966+} __no_const;
46967
46968 /**
46969 * struct ath_spec_scan - parameters for Atheros spectral scan
46970@@ -706,7 +706,7 @@ struct ath_hw_ops {
46971 #ifdef CONFIG_ATH9K_BTCOEX_SUPPORT
46972 void (*set_bt_ant_diversity)(struct ath_hw *hw, bool enable);
46973 #endif
46974-};
46975+} __no_const;
46976
46977 struct ath_nf_limits {
46978 s16 max;
46979diff --git a/drivers/net/wireless/b43/phy_lp.c b/drivers/net/wireless/b43/phy_lp.c
46980index 92190da..f3a4c4c 100644
46981--- a/drivers/net/wireless/b43/phy_lp.c
46982+++ b/drivers/net/wireless/b43/phy_lp.c
46983@@ -2514,7 +2514,7 @@ static int lpphy_b2063_tune(struct b43_wldev *dev,
46984 {
46985 struct ssb_bus *bus = dev->dev->sdev->bus;
46986
46987- static const struct b206x_channel *chandata = NULL;
46988+ const struct b206x_channel *chandata = NULL;
46989 u32 crystal_freq = bus->chipco.pmu.crystalfreq * 1000;
46990 u32 freqref, vco_freq, val1, val2, val3, timeout, timeoutref, count;
46991 u16 old_comm15, scale;
46992diff --git a/drivers/net/wireless/iwlegacy/3945-mac.c b/drivers/net/wireless/iwlegacy/3945-mac.c
46993index dc1d20c..f7a4f06 100644
46994--- a/drivers/net/wireless/iwlegacy/3945-mac.c
46995+++ b/drivers/net/wireless/iwlegacy/3945-mac.c
46996@@ -3633,7 +3633,9 @@ il3945_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
46997 */
46998 if (il3945_mod_params.disable_hw_scan) {
46999 D_INFO("Disabling hw_scan\n");
47000- il3945_mac_ops.hw_scan = NULL;
47001+ pax_open_kernel();
47002+ *(void **)&il3945_mac_ops.hw_scan = NULL;
47003+ pax_close_kernel();
47004 }
47005
47006 D_INFO("*** LOAD DRIVER ***\n");
47007diff --git a/drivers/net/wireless/iwlwifi/dvm/debugfs.c b/drivers/net/wireless/iwlwifi/dvm/debugfs.c
47008index d2fe259..0c4c682 100644
47009--- a/drivers/net/wireless/iwlwifi/dvm/debugfs.c
47010+++ b/drivers/net/wireless/iwlwifi/dvm/debugfs.c
47011@@ -188,7 +188,7 @@ static ssize_t iwl_dbgfs_sram_write(struct file *file,
47012 {
47013 struct iwl_priv *priv = file->private_data;
47014 char buf[64];
47015- int buf_size;
47016+ size_t buf_size;
47017 u32 offset, len;
47018
47019 memset(buf, 0, sizeof(buf));
47020@@ -458,7 +458,7 @@ static ssize_t iwl_dbgfs_rx_handlers_write(struct file *file,
47021 struct iwl_priv *priv = file->private_data;
47022
47023 char buf[8];
47024- int buf_size;
47025+ size_t buf_size;
47026 u32 reset_flag;
47027
47028 memset(buf, 0, sizeof(buf));
47029@@ -539,7 +539,7 @@ static ssize_t iwl_dbgfs_disable_ht40_write(struct file *file,
47030 {
47031 struct iwl_priv *priv = file->private_data;
47032 char buf[8];
47033- int buf_size;
47034+ size_t buf_size;
47035 int ht40;
47036
47037 memset(buf, 0, sizeof(buf));
47038@@ -591,7 +591,7 @@ static ssize_t iwl_dbgfs_sleep_level_override_write(struct file *file,
47039 {
47040 struct iwl_priv *priv = file->private_data;
47041 char buf[8];
47042- int buf_size;
47043+ size_t buf_size;
47044 int value;
47045
47046 memset(buf, 0, sizeof(buf));
47047@@ -683,10 +683,10 @@ DEBUGFS_READ_FILE_OPS(temperature);
47048 DEBUGFS_READ_WRITE_FILE_OPS(sleep_level_override);
47049 DEBUGFS_READ_FILE_OPS(current_sleep_command);
47050
47051-static const char *fmt_value = " %-30s %10u\n";
47052-static const char *fmt_hex = " %-30s 0x%02X\n";
47053-static const char *fmt_table = " %-30s %10u %10u %10u %10u\n";
47054-static const char *fmt_header =
47055+static const char fmt_value[] = " %-30s %10u\n";
47056+static const char fmt_hex[] = " %-30s 0x%02X\n";
47057+static const char fmt_table[] = " %-30s %10u %10u %10u %10u\n";
47058+static const char fmt_header[] =
47059 "%-32s current cumulative delta max\n";
47060
47061 static int iwl_statistics_flag(struct iwl_priv *priv, char *buf, int bufsz)
47062@@ -1856,7 +1856,7 @@ static ssize_t iwl_dbgfs_clear_ucode_statistics_write(struct file *file,
47063 {
47064 struct iwl_priv *priv = file->private_data;
47065 char buf[8];
47066- int buf_size;
47067+ size_t buf_size;
47068 int clear;
47069
47070 memset(buf, 0, sizeof(buf));
47071@@ -1901,7 +1901,7 @@ static ssize_t iwl_dbgfs_ucode_tracing_write(struct file *file,
47072 {
47073 struct iwl_priv *priv = file->private_data;
47074 char buf[8];
47075- int buf_size;
47076+ size_t buf_size;
47077 int trace;
47078
47079 memset(buf, 0, sizeof(buf));
47080@@ -1972,7 +1972,7 @@ static ssize_t iwl_dbgfs_missed_beacon_write(struct file *file,
47081 {
47082 struct iwl_priv *priv = file->private_data;
47083 char buf[8];
47084- int buf_size;
47085+ size_t buf_size;
47086 int missed;
47087
47088 memset(buf, 0, sizeof(buf));
47089@@ -2013,7 +2013,7 @@ static ssize_t iwl_dbgfs_plcp_delta_write(struct file *file,
47090
47091 struct iwl_priv *priv = file->private_data;
47092 char buf[8];
47093- int buf_size;
47094+ size_t buf_size;
47095 int plcp;
47096
47097 memset(buf, 0, sizeof(buf));
47098@@ -2073,7 +2073,7 @@ static ssize_t iwl_dbgfs_txfifo_flush_write(struct file *file,
47099
47100 struct iwl_priv *priv = file->private_data;
47101 char buf[8];
47102- int buf_size;
47103+ size_t buf_size;
47104 int flush;
47105
47106 memset(buf, 0, sizeof(buf));
47107@@ -2163,7 +2163,7 @@ static ssize_t iwl_dbgfs_protection_mode_write(struct file *file,
47108
47109 struct iwl_priv *priv = file->private_data;
47110 char buf[8];
47111- int buf_size;
47112+ size_t buf_size;
47113 int rts;
47114
47115 if (!priv->cfg->ht_params)
47116@@ -2205,7 +2205,7 @@ static ssize_t iwl_dbgfs_echo_test_write(struct file *file,
47117 {
47118 struct iwl_priv *priv = file->private_data;
47119 char buf[8];
47120- int buf_size;
47121+ size_t buf_size;
47122
47123 memset(buf, 0, sizeof(buf));
47124 buf_size = min(count, sizeof(buf) - 1);
47125@@ -2239,7 +2239,7 @@ static ssize_t iwl_dbgfs_log_event_write(struct file *file,
47126 struct iwl_priv *priv = file->private_data;
47127 u32 event_log_flag;
47128 char buf[8];
47129- int buf_size;
47130+ size_t buf_size;
47131
47132 /* check that the interface is up */
47133 if (!iwl_is_ready(priv))
47134@@ -2293,7 +2293,7 @@ static ssize_t iwl_dbgfs_calib_disabled_write(struct file *file,
47135 struct iwl_priv *priv = file->private_data;
47136 char buf[8];
47137 u32 calib_disabled;
47138- int buf_size;
47139+ size_t buf_size;
47140
47141 memset(buf, 0, sizeof(buf));
47142 buf_size = min(count, sizeof(buf) - 1);
47143diff --git a/drivers/net/wireless/iwlwifi/dvm/main.c b/drivers/net/wireless/iwlwifi/dvm/main.c
47144index 6a6df71..eb5c93a 100644
47145--- a/drivers/net/wireless/iwlwifi/dvm/main.c
47146+++ b/drivers/net/wireless/iwlwifi/dvm/main.c
47147@@ -1127,7 +1127,7 @@ static void iwl_option_config(struct iwl_priv *priv)
47148 static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
47149 {
47150 struct iwl_nvm_data *data = priv->nvm_data;
47151- char *debug_msg;
47152+ static const char debug_msg[] = "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n";
47153
47154 if (data->sku_cap_11n_enable &&
47155 !priv->cfg->ht_params) {
47156@@ -1141,7 +1141,6 @@ static int iwl_eeprom_init_hw_params(struct iwl_priv *priv)
47157 return -EINVAL;
47158 }
47159
47160- debug_msg = "Device SKU: 24GHz %s %s, 52GHz %s %s, 11.n %s %s\n";
47161 IWL_DEBUG_INFO(priv, debug_msg,
47162 data->sku_cap_band_24GHz_enable ? "" : "NOT", "enabled",
47163 data->sku_cap_band_52GHz_enable ? "" : "NOT", "enabled",
47164diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
47165index 2365553..97126d8 100644
47166--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
47167+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
47168@@ -1552,7 +1552,7 @@ static ssize_t iwl_dbgfs_interrupt_write(struct file *file,
47169 struct isr_statistics *isr_stats = &trans_pcie->isr_stats;
47170
47171 char buf[8];
47172- int buf_size;
47173+ size_t buf_size;
47174 u32 reset_flag;
47175
47176 memset(buf, 0, sizeof(buf));
47177@@ -1573,7 +1573,7 @@ static ssize_t iwl_dbgfs_csr_write(struct file *file,
47178 {
47179 struct iwl_trans *trans = file->private_data;
47180 char buf[8];
47181- int buf_size;
47182+ size_t buf_size;
47183 int csr;
47184
47185 memset(buf, 0, sizeof(buf));
47186diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
47187index 9d7a52f..2729a99 100644
47188--- a/drivers/net/wireless/mac80211_hwsim.c
47189+++ b/drivers/net/wireless/mac80211_hwsim.c
47190@@ -2570,20 +2570,20 @@ static int __init init_mac80211_hwsim(void)
47191 if (channels < 1)
47192 return -EINVAL;
47193
47194- mac80211_hwsim_mchan_ops = mac80211_hwsim_ops;
47195- mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
47196- mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
47197- mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
47198- mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
47199- mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
47200- mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
47201- mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
47202- mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
47203- mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
47204- mac80211_hwsim_mchan_ops.assign_vif_chanctx =
47205- mac80211_hwsim_assign_vif_chanctx;
47206- mac80211_hwsim_mchan_ops.unassign_vif_chanctx =
47207- mac80211_hwsim_unassign_vif_chanctx;
47208+ pax_open_kernel();
47209+ memcpy((void *)&mac80211_hwsim_mchan_ops, &mac80211_hwsim_ops, sizeof mac80211_hwsim_mchan_ops);
47210+ *(void **)&mac80211_hwsim_mchan_ops.hw_scan = mac80211_hwsim_hw_scan;
47211+ *(void **)&mac80211_hwsim_mchan_ops.cancel_hw_scan = mac80211_hwsim_cancel_hw_scan;
47212+ *(void **)&mac80211_hwsim_mchan_ops.sw_scan_start = NULL;
47213+ *(void **)&mac80211_hwsim_mchan_ops.sw_scan_complete = NULL;
47214+ *(void **)&mac80211_hwsim_mchan_ops.remain_on_channel = mac80211_hwsim_roc;
47215+ *(void **)&mac80211_hwsim_mchan_ops.cancel_remain_on_channel = mac80211_hwsim_croc;
47216+ *(void **)&mac80211_hwsim_mchan_ops.add_chanctx = mac80211_hwsim_add_chanctx;
47217+ *(void **)&mac80211_hwsim_mchan_ops.remove_chanctx = mac80211_hwsim_remove_chanctx;
47218+ *(void **)&mac80211_hwsim_mchan_ops.change_chanctx = mac80211_hwsim_change_chanctx;
47219+ *(void **)&mac80211_hwsim_mchan_ops.assign_vif_chanctx = mac80211_hwsim_assign_vif_chanctx;
47220+ *(void **)&mac80211_hwsim_mchan_ops.unassign_vif_chanctx = mac80211_hwsim_unassign_vif_chanctx;
47221+ pax_close_kernel();
47222
47223 spin_lock_init(&hwsim_radio_lock);
47224 INIT_LIST_HEAD(&hwsim_radios);
47225diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
47226index 39d22a1..4ec8612 100644
47227--- a/drivers/net/wireless/rndis_wlan.c
47228+++ b/drivers/net/wireless/rndis_wlan.c
47229@@ -1236,7 +1236,7 @@ static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
47230
47231 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
47232
47233- if (rts_threshold < 0 || rts_threshold > 2347)
47234+ if (rts_threshold > 2347)
47235 rts_threshold = 2347;
47236
47237 tmp = cpu_to_le32(rts_threshold);
47238diff --git a/drivers/net/wireless/rt2x00/rt2x00.h b/drivers/net/wireless/rt2x00/rt2x00.h
47239index e3b885d..7a7de2f 100644
47240--- a/drivers/net/wireless/rt2x00/rt2x00.h
47241+++ b/drivers/net/wireless/rt2x00/rt2x00.h
47242@@ -375,7 +375,7 @@ struct rt2x00_intf {
47243 * for hardware which doesn't support hardware
47244 * sequence counting.
47245 */
47246- atomic_t seqno;
47247+ atomic_unchecked_t seqno;
47248 };
47249
47250 static inline struct rt2x00_intf* vif_to_intf(struct ieee80211_vif *vif)
47251diff --git a/drivers/net/wireless/rt2x00/rt2x00queue.c b/drivers/net/wireless/rt2x00/rt2x00queue.c
47252index 5642ccc..01f03eb 100644
47253--- a/drivers/net/wireless/rt2x00/rt2x00queue.c
47254+++ b/drivers/net/wireless/rt2x00/rt2x00queue.c
47255@@ -250,9 +250,9 @@ static void rt2x00queue_create_tx_descriptor_seq(struct rt2x00_dev *rt2x00dev,
47256 * sequence counter given by mac80211.
47257 */
47258 if (test_bit(ENTRY_TXD_FIRST_FRAGMENT, &txdesc->flags))
47259- seqno = atomic_add_return(0x10, &intf->seqno);
47260+ seqno = atomic_add_return_unchecked(0x10, &intf->seqno);
47261 else
47262- seqno = atomic_read(&intf->seqno);
47263+ seqno = atomic_read_unchecked(&intf->seqno);
47264
47265 hdr->seq_ctrl &= cpu_to_le16(IEEE80211_SCTL_FRAG);
47266 hdr->seq_ctrl |= cpu_to_le16(seqno);
47267diff --git a/drivers/net/wireless/ti/wl1251/sdio.c b/drivers/net/wireless/ti/wl1251/sdio.c
47268index b661f896..ddf7d2b 100644
47269--- a/drivers/net/wireless/ti/wl1251/sdio.c
47270+++ b/drivers/net/wireless/ti/wl1251/sdio.c
47271@@ -282,13 +282,17 @@ static int wl1251_sdio_probe(struct sdio_func *func,
47272
47273 irq_set_irq_type(wl->irq, IRQ_TYPE_EDGE_RISING);
47274
47275- wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq;
47276- wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq;
47277+ pax_open_kernel();
47278+ *(void **)&wl1251_sdio_ops.enable_irq = wl1251_enable_line_irq;
47279+ *(void **)&wl1251_sdio_ops.disable_irq = wl1251_disable_line_irq;
47280+ pax_close_kernel();
47281
47282 wl1251_info("using dedicated interrupt line");
47283 } else {
47284- wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq;
47285- wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq;
47286+ pax_open_kernel();
47287+ *(void **)&wl1251_sdio_ops.enable_irq = wl1251_sdio_enable_irq;
47288+ *(void **)&wl1251_sdio_ops.disable_irq = wl1251_sdio_disable_irq;
47289+ pax_close_kernel();
47290
47291 wl1251_info("using SDIO interrupt");
47292 }
47293diff --git a/drivers/net/wireless/ti/wl12xx/main.c b/drivers/net/wireless/ti/wl12xx/main.c
47294index d50dfac..0a6f5be3 100644
47295--- a/drivers/net/wireless/ti/wl12xx/main.c
47296+++ b/drivers/net/wireless/ti/wl12xx/main.c
47297@@ -656,7 +656,9 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
47298 sizeof(wl->conf.mem));
47299
47300 /* read data preparation is only needed by wl127x */
47301- wl->ops->prepare_read = wl127x_prepare_read;
47302+ pax_open_kernel();
47303+ *(void **)&wl->ops->prepare_read = wl127x_prepare_read;
47304+ pax_close_kernel();
47305
47306 wlcore_set_min_fw_ver(wl, WL127X_CHIP_VER,
47307 WL127X_IFTYPE_SR_VER, WL127X_MAJOR_SR_VER,
47308@@ -681,7 +683,9 @@ static int wl12xx_identify_chip(struct wl1271 *wl)
47309 sizeof(wl->conf.mem));
47310
47311 /* read data preparation is only needed by wl127x */
47312- wl->ops->prepare_read = wl127x_prepare_read;
47313+ pax_open_kernel();
47314+ *(void **)&wl->ops->prepare_read = wl127x_prepare_read;
47315+ pax_close_kernel();
47316
47317 wlcore_set_min_fw_ver(wl, WL127X_CHIP_VER,
47318 WL127X_IFTYPE_SR_VER, WL127X_MAJOR_SR_VER,
47319diff --git a/drivers/net/wireless/ti/wl18xx/main.c b/drivers/net/wireless/ti/wl18xx/main.c
47320index de5b4fa..7996ec6 100644
47321--- a/drivers/net/wireless/ti/wl18xx/main.c
47322+++ b/drivers/net/wireless/ti/wl18xx/main.c
47323@@ -1900,8 +1900,10 @@ static int wl18xx_setup(struct wl1271 *wl)
47324 }
47325
47326 if (!checksum_param) {
47327- wl18xx_ops.set_rx_csum = NULL;
47328- wl18xx_ops.init_vif = NULL;
47329+ pax_open_kernel();
47330+ *(void **)&wl18xx_ops.set_rx_csum = NULL;
47331+ *(void **)&wl18xx_ops.init_vif = NULL;
47332+ pax_close_kernel();
47333 }
47334
47335 /* Enable 11a Band only if we have 5G antennas */
47336diff --git a/drivers/net/wireless/zd1211rw/zd_usb.c b/drivers/net/wireless/zd1211rw/zd_usb.c
47337index a912dc0..a8225ba 100644
47338--- a/drivers/net/wireless/zd1211rw/zd_usb.c
47339+++ b/drivers/net/wireless/zd1211rw/zd_usb.c
47340@@ -385,7 +385,7 @@ static inline void handle_regs_int(struct urb *urb)
47341 {
47342 struct zd_usb *usb = urb->context;
47343 struct zd_usb_interrupt *intr = &usb->intr;
47344- int len;
47345+ unsigned int len;
47346 u16 int_num;
47347
47348 ZD_ASSERT(in_interrupt());
47349diff --git a/drivers/nfc/nfcwilink.c b/drivers/nfc/nfcwilink.c
47350index 683671a..4519fc2 100644
47351--- a/drivers/nfc/nfcwilink.c
47352+++ b/drivers/nfc/nfcwilink.c
47353@@ -497,7 +497,7 @@ static struct nci_ops nfcwilink_ops = {
47354
47355 static int nfcwilink_probe(struct platform_device *pdev)
47356 {
47357- static struct nfcwilink *drv;
47358+ struct nfcwilink *drv;
47359 int rc;
47360 __u32 protocols;
47361
47362diff --git a/drivers/oprofile/buffer_sync.c b/drivers/oprofile/buffer_sync.c
47363index d93b2b6..ae50401 100644
47364--- a/drivers/oprofile/buffer_sync.c
47365+++ b/drivers/oprofile/buffer_sync.c
47366@@ -332,7 +332,7 @@ static void add_data(struct op_entry *entry, struct mm_struct *mm)
47367 if (cookie == NO_COOKIE)
47368 offset = pc;
47369 if (cookie == INVALID_COOKIE) {
47370- atomic_inc(&oprofile_stats.sample_lost_no_mapping);
47371+ atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mapping);
47372 offset = pc;
47373 }
47374 if (cookie != last_cookie) {
47375@@ -376,14 +376,14 @@ add_sample(struct mm_struct *mm, struct op_sample *s, int in_kernel)
47376 /* add userspace sample */
47377
47378 if (!mm) {
47379- atomic_inc(&oprofile_stats.sample_lost_no_mm);
47380+ atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mm);
47381 return 0;
47382 }
47383
47384 cookie = lookup_dcookie(mm, s->eip, &offset);
47385
47386 if (cookie == INVALID_COOKIE) {
47387- atomic_inc(&oprofile_stats.sample_lost_no_mapping);
47388+ atomic_inc_unchecked(&oprofile_stats.sample_lost_no_mapping);
47389 return 0;
47390 }
47391
47392@@ -552,7 +552,7 @@ void sync_buffer(int cpu)
47393 /* ignore backtraces if failed to add a sample */
47394 if (state == sb_bt_start) {
47395 state = sb_bt_ignore;
47396- atomic_inc(&oprofile_stats.bt_lost_no_mapping);
47397+ atomic_inc_unchecked(&oprofile_stats.bt_lost_no_mapping);
47398 }
47399 }
47400 release_mm(mm);
47401diff --git a/drivers/oprofile/event_buffer.c b/drivers/oprofile/event_buffer.c
47402index c0cc4e7..44d4e54 100644
47403--- a/drivers/oprofile/event_buffer.c
47404+++ b/drivers/oprofile/event_buffer.c
47405@@ -53,7 +53,7 @@ void add_event_entry(unsigned long value)
47406 }
47407
47408 if (buffer_pos == buffer_size) {
47409- atomic_inc(&oprofile_stats.event_lost_overflow);
47410+ atomic_inc_unchecked(&oprofile_stats.event_lost_overflow);
47411 return;
47412 }
47413
47414diff --git a/drivers/oprofile/oprof.c b/drivers/oprofile/oprof.c
47415index ed2c3ec..deda85a 100644
47416--- a/drivers/oprofile/oprof.c
47417+++ b/drivers/oprofile/oprof.c
47418@@ -110,7 +110,7 @@ static void switch_worker(struct work_struct *work)
47419 if (oprofile_ops.switch_events())
47420 return;
47421
47422- atomic_inc(&oprofile_stats.multiplex_counter);
47423+ atomic_inc_unchecked(&oprofile_stats.multiplex_counter);
47424 start_switch_worker();
47425 }
47426
47427diff --git a/drivers/oprofile/oprofile_files.c b/drivers/oprofile/oprofile_files.c
47428index ee2cfce..7f8f699 100644
47429--- a/drivers/oprofile/oprofile_files.c
47430+++ b/drivers/oprofile/oprofile_files.c
47431@@ -27,7 +27,7 @@ unsigned long oprofile_time_slice;
47432
47433 #ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
47434
47435-static ssize_t timeout_read(struct file *file, char __user *buf,
47436+static ssize_t __intentional_overflow(-1) timeout_read(struct file *file, char __user *buf,
47437 size_t count, loff_t *offset)
47438 {
47439 return oprofilefs_ulong_to_user(jiffies_to_msecs(oprofile_time_slice),
47440diff --git a/drivers/oprofile/oprofile_stats.c b/drivers/oprofile/oprofile_stats.c
47441index 59659ce..6c860a0 100644
47442--- a/drivers/oprofile/oprofile_stats.c
47443+++ b/drivers/oprofile/oprofile_stats.c
47444@@ -30,11 +30,11 @@ void oprofile_reset_stats(void)
47445 cpu_buf->sample_invalid_eip = 0;
47446 }
47447
47448- atomic_set(&oprofile_stats.sample_lost_no_mm, 0);
47449- atomic_set(&oprofile_stats.sample_lost_no_mapping, 0);
47450- atomic_set(&oprofile_stats.event_lost_overflow, 0);
47451- atomic_set(&oprofile_stats.bt_lost_no_mapping, 0);
47452- atomic_set(&oprofile_stats.multiplex_counter, 0);
47453+ atomic_set_unchecked(&oprofile_stats.sample_lost_no_mm, 0);
47454+ atomic_set_unchecked(&oprofile_stats.sample_lost_no_mapping, 0);
47455+ atomic_set_unchecked(&oprofile_stats.event_lost_overflow, 0);
47456+ atomic_set_unchecked(&oprofile_stats.bt_lost_no_mapping, 0);
47457+ atomic_set_unchecked(&oprofile_stats.multiplex_counter, 0);
47458 }
47459
47460
47461diff --git a/drivers/oprofile/oprofile_stats.h b/drivers/oprofile/oprofile_stats.h
47462index 1fc622b..8c48fc3 100644
47463--- a/drivers/oprofile/oprofile_stats.h
47464+++ b/drivers/oprofile/oprofile_stats.h
47465@@ -13,11 +13,11 @@
47466 #include <linux/atomic.h>
47467
47468 struct oprofile_stat_struct {
47469- atomic_t sample_lost_no_mm;
47470- atomic_t sample_lost_no_mapping;
47471- atomic_t bt_lost_no_mapping;
47472- atomic_t event_lost_overflow;
47473- atomic_t multiplex_counter;
47474+ atomic_unchecked_t sample_lost_no_mm;
47475+ atomic_unchecked_t sample_lost_no_mapping;
47476+ atomic_unchecked_t bt_lost_no_mapping;
47477+ atomic_unchecked_t event_lost_overflow;
47478+ atomic_unchecked_t multiplex_counter;
47479 };
47480
47481 extern struct oprofile_stat_struct oprofile_stats;
47482diff --git a/drivers/oprofile/oprofilefs.c b/drivers/oprofile/oprofilefs.c
47483index 3f49345..c750d0b 100644
47484--- a/drivers/oprofile/oprofilefs.c
47485+++ b/drivers/oprofile/oprofilefs.c
47486@@ -176,8 +176,8 @@ int oprofilefs_create_ro_ulong(struct dentry *root,
47487
47488 static ssize_t atomic_read_file(struct file *file, char __user *buf, size_t count, loff_t *offset)
47489 {
47490- atomic_t *val = file->private_data;
47491- return oprofilefs_ulong_to_user(atomic_read(val), buf, count, offset);
47492+ atomic_unchecked_t *val = file->private_data;
47493+ return oprofilefs_ulong_to_user(atomic_read_unchecked(val), buf, count, offset);
47494 }
47495
47496
47497@@ -189,7 +189,7 @@ static const struct file_operations atomic_ro_fops = {
47498
47499
47500 int oprofilefs_create_ro_atomic(struct dentry *root,
47501- char const *name, atomic_t *val)
47502+ char const *name, atomic_unchecked_t *val)
47503 {
47504 return __oprofilefs_create_file(root, name,
47505 &atomic_ro_fops, 0444, val);
47506diff --git a/drivers/oprofile/timer_int.c b/drivers/oprofile/timer_int.c
47507index 61be1d9..dec05d7 100644
47508--- a/drivers/oprofile/timer_int.c
47509+++ b/drivers/oprofile/timer_int.c
47510@@ -93,7 +93,7 @@ static int oprofile_cpu_notify(struct notifier_block *self,
47511 return NOTIFY_OK;
47512 }
47513
47514-static struct notifier_block __refdata oprofile_cpu_notifier = {
47515+static struct notifier_block oprofile_cpu_notifier = {
47516 .notifier_call = oprofile_cpu_notify,
47517 };
47518
47519diff --git a/drivers/parport/procfs.c b/drivers/parport/procfs.c
47520index 92ed045..62d39bd7 100644
47521--- a/drivers/parport/procfs.c
47522+++ b/drivers/parport/procfs.c
47523@@ -64,7 +64,7 @@ static int do_active_device(ctl_table *table, int write,
47524
47525 *ppos += len;
47526
47527- return copy_to_user(result, buffer, len) ? -EFAULT : 0;
47528+ return (len > sizeof buffer || copy_to_user(result, buffer, len)) ? -EFAULT : 0;
47529 }
47530
47531 #ifdef CONFIG_PARPORT_1284
47532@@ -106,7 +106,7 @@ static int do_autoprobe(ctl_table *table, int write,
47533
47534 *ppos += len;
47535
47536- return copy_to_user (result, buffer, len) ? -EFAULT : 0;
47537+ return (len > sizeof buffer || copy_to_user (result, buffer, len)) ? -EFAULT : 0;
47538 }
47539 #endif /* IEEE1284.3 support. */
47540
47541diff --git a/drivers/pci/hotplug/acpiphp_ibm.c b/drivers/pci/hotplug/acpiphp_ibm.c
47542index 8dcccff..35d701d 100644
47543--- a/drivers/pci/hotplug/acpiphp_ibm.c
47544+++ b/drivers/pci/hotplug/acpiphp_ibm.c
47545@@ -452,7 +452,9 @@ static int __init ibm_acpiphp_init(void)
47546 goto init_cleanup;
47547 }
47548
47549- ibm_apci_table_attr.size = ibm_get_table_from_acpi(NULL);
47550+ pax_open_kernel();
47551+ *(size_t *)&ibm_apci_table_attr.size = ibm_get_table_from_acpi(NULL);
47552+ pax_close_kernel();
47553 retval = sysfs_create_bin_file(sysdir, &ibm_apci_table_attr);
47554
47555 return retval;
47556diff --git a/drivers/pci/hotplug/cpcihp_generic.c b/drivers/pci/hotplug/cpcihp_generic.c
47557index 7536eef..52dc8fa 100644
47558--- a/drivers/pci/hotplug/cpcihp_generic.c
47559+++ b/drivers/pci/hotplug/cpcihp_generic.c
47560@@ -73,7 +73,6 @@ static u16 port;
47561 static unsigned int enum_bit;
47562 static u8 enum_mask;
47563
47564-static struct cpci_hp_controller_ops generic_hpc_ops;
47565 static struct cpci_hp_controller generic_hpc;
47566
47567 static int __init validate_parameters(void)
47568@@ -139,6 +138,10 @@ static int query_enum(void)
47569 return ((value & enum_mask) == enum_mask);
47570 }
47571
47572+static struct cpci_hp_controller_ops generic_hpc_ops = {
47573+ .query_enum = query_enum,
47574+};
47575+
47576 static int __init cpcihp_generic_init(void)
47577 {
47578 int status;
47579@@ -165,7 +168,6 @@ static int __init cpcihp_generic_init(void)
47580 pci_dev_put(dev);
47581
47582 memset(&generic_hpc, 0, sizeof (struct cpci_hp_controller));
47583- generic_hpc_ops.query_enum = query_enum;
47584 generic_hpc.ops = &generic_hpc_ops;
47585
47586 status = cpci_hp_register_controller(&generic_hpc);
47587diff --git a/drivers/pci/hotplug/cpcihp_zt5550.c b/drivers/pci/hotplug/cpcihp_zt5550.c
47588index e8c4a7c..7046f5c 100644
47589--- a/drivers/pci/hotplug/cpcihp_zt5550.c
47590+++ b/drivers/pci/hotplug/cpcihp_zt5550.c
47591@@ -59,7 +59,6 @@
47592 /* local variables */
47593 static bool debug;
47594 static bool poll;
47595-static struct cpci_hp_controller_ops zt5550_hpc_ops;
47596 static struct cpci_hp_controller zt5550_hpc;
47597
47598 /* Primary cPCI bus bridge device */
47599@@ -205,6 +204,10 @@ static int zt5550_hc_disable_irq(void)
47600 return 0;
47601 }
47602
47603+static struct cpci_hp_controller_ops zt5550_hpc_ops = {
47604+ .query_enum = zt5550_hc_query_enum,
47605+};
47606+
47607 static int zt5550_hc_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
47608 {
47609 int status;
47610@@ -216,16 +219,17 @@ static int zt5550_hc_init_one (struct pci_dev *pdev, const struct pci_device_id
47611 dbg("returned from zt5550_hc_config");
47612
47613 memset(&zt5550_hpc, 0, sizeof (struct cpci_hp_controller));
47614- zt5550_hpc_ops.query_enum = zt5550_hc_query_enum;
47615 zt5550_hpc.ops = &zt5550_hpc_ops;
47616 if(!poll) {
47617 zt5550_hpc.irq = hc_dev->irq;
47618 zt5550_hpc.irq_flags = IRQF_SHARED;
47619 zt5550_hpc.dev_id = hc_dev;
47620
47621- zt5550_hpc_ops.enable_irq = zt5550_hc_enable_irq;
47622- zt5550_hpc_ops.disable_irq = zt5550_hc_disable_irq;
47623- zt5550_hpc_ops.check_irq = zt5550_hc_check_irq;
47624+ pax_open_kernel();
47625+ *(void **)&zt5550_hpc_ops.enable_irq = zt5550_hc_enable_irq;
47626+ *(void **)&zt5550_hpc_ops.disable_irq = zt5550_hc_disable_irq;
47627+ *(void **)&zt5550_hpc_ops.check_irq = zt5550_hc_check_irq;
47628+ pax_open_kernel();
47629 } else {
47630 info("using ENUM# polling mode");
47631 }
47632diff --git a/drivers/pci/hotplug/cpqphp_nvram.c b/drivers/pci/hotplug/cpqphp_nvram.c
47633index 76ba8a1..20ca857 100644
47634--- a/drivers/pci/hotplug/cpqphp_nvram.c
47635+++ b/drivers/pci/hotplug/cpqphp_nvram.c
47636@@ -428,9 +428,13 @@ static u32 store_HRT (void __iomem *rom_start)
47637
47638 void compaq_nvram_init (void __iomem *rom_start)
47639 {
47640+
47641+#ifndef CONFIG_PAX_KERNEXEC
47642 if (rom_start) {
47643 compaq_int15_entry_point = (rom_start + ROM_INT15_PHY_ADDR - ROM_PHY_ADDR);
47644 }
47645+#endif
47646+
47647 dbg("int15 entry = %p\n", compaq_int15_entry_point);
47648
47649 /* initialize our int15 lock */
47650diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c
47651index cfa92a9..29539c5 100644
47652--- a/drivers/pci/hotplug/pci_hotplug_core.c
47653+++ b/drivers/pci/hotplug/pci_hotplug_core.c
47654@@ -441,8 +441,10 @@ int __pci_hp_register(struct hotplug_slot *slot, struct pci_bus *bus,
47655 return -EINVAL;
47656 }
47657
47658- slot->ops->owner = owner;
47659- slot->ops->mod_name = mod_name;
47660+ pax_open_kernel();
47661+ *(struct module **)&slot->ops->owner = owner;
47662+ *(const char **)&slot->ops->mod_name = mod_name;
47663+ pax_close_kernel();
47664
47665 mutex_lock(&pci_hp_mutex);
47666 /*
47667diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
47668index 0e0a2ff..29dff57 100644
47669--- a/drivers/pci/hotplug/pciehp_core.c
47670+++ b/drivers/pci/hotplug/pciehp_core.c
47671@@ -92,7 +92,7 @@ static int init_slot(struct controller *ctrl)
47672 struct slot *slot = ctrl->slot;
47673 struct hotplug_slot *hotplug = NULL;
47674 struct hotplug_slot_info *info = NULL;
47675- struct hotplug_slot_ops *ops = NULL;
47676+ hotplug_slot_ops_no_const *ops = NULL;
47677 char name[SLOT_NAME_SIZE];
47678 int retval = -ENOMEM;
47679
47680diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
47681index fb02fc2..83dc2c3 100644
47682--- a/drivers/pci/msi.c
47683+++ b/drivers/pci/msi.c
47684@@ -524,8 +524,8 @@ static int populate_msi_sysfs(struct pci_dev *pdev)
47685 {
47686 struct attribute **msi_attrs;
47687 struct attribute *msi_attr;
47688- struct device_attribute *msi_dev_attr;
47689- struct attribute_group *msi_irq_group;
47690+ device_attribute_no_const *msi_dev_attr;
47691+ attribute_group_no_const *msi_irq_group;
47692 const struct attribute_group **msi_irq_groups;
47693 struct msi_desc *entry;
47694 int ret = -ENOMEM;
47695@@ -589,7 +589,7 @@ error_attrs:
47696 count = 0;
47697 msi_attr = msi_attrs[count];
47698 while (msi_attr) {
47699- msi_dev_attr = container_of(msi_attr, struct device_attribute, attr);
47700+ msi_dev_attr = container_of(msi_attr, device_attribute_no_const, attr);
47701 kfree(msi_attr->name);
47702 kfree(msi_dev_attr);
47703 ++count;
47704diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
47705index 4e0acef..bd98e31 100644
47706--- a/drivers/pci/pci-sysfs.c
47707+++ b/drivers/pci/pci-sysfs.c
47708@@ -1101,7 +1101,7 @@ static int pci_create_attr(struct pci_dev *pdev, int num, int write_combine)
47709 {
47710 /* allocate attribute structure, piggyback attribute name */
47711 int name_len = write_combine ? 13 : 10;
47712- struct bin_attribute *res_attr;
47713+ bin_attribute_no_const *res_attr;
47714 int retval;
47715
47716 res_attr = kzalloc(sizeof(*res_attr) + name_len, GFP_ATOMIC);
47717@@ -1286,7 +1286,7 @@ static struct device_attribute reset_attr = __ATTR(reset, 0200, NULL, reset_stor
47718 static int pci_create_capabilities_sysfs(struct pci_dev *dev)
47719 {
47720 int retval;
47721- struct bin_attribute *attr;
47722+ bin_attribute_no_const *attr;
47723
47724 /* If the device has VPD, try to expose it in sysfs. */
47725 if (dev->vpd) {
47726@@ -1333,7 +1333,7 @@ int __must_check pci_create_sysfs_dev_files (struct pci_dev *pdev)
47727 {
47728 int retval;
47729 int rom_size = 0;
47730- struct bin_attribute *attr;
47731+ bin_attribute_no_const *attr;
47732
47733 if (!sysfs_initialized)
47734 return -EACCES;
47735diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
47736index 6bd0822..35bc2b3 100644
47737--- a/drivers/pci/pci.h
47738+++ b/drivers/pci/pci.h
47739@@ -91,7 +91,7 @@ struct pci_vpd_ops {
47740 struct pci_vpd {
47741 unsigned int len;
47742 const struct pci_vpd_ops *ops;
47743- struct bin_attribute *attr; /* descriptor for sysfs VPD entry */
47744+ bin_attribute_no_const *attr; /* descriptor for sysfs VPD entry */
47745 };
47746
47747 int pci_vpd_pci22_init(struct pci_dev *dev);
47748diff --git a/drivers/pci/pcie/aspm.c b/drivers/pci/pcie/aspm.c
47749index e1e7026..d28dd33 100644
47750--- a/drivers/pci/pcie/aspm.c
47751+++ b/drivers/pci/pcie/aspm.c
47752@@ -27,9 +27,9 @@
47753 #define MODULE_PARAM_PREFIX "pcie_aspm."
47754
47755 /* Note: those are not register definitions */
47756-#define ASPM_STATE_L0S_UP (1) /* Upstream direction L0s state */
47757-#define ASPM_STATE_L0S_DW (2) /* Downstream direction L0s state */
47758-#define ASPM_STATE_L1 (4) /* L1 state */
47759+#define ASPM_STATE_L0S_UP (1U) /* Upstream direction L0s state */
47760+#define ASPM_STATE_L0S_DW (2U) /* Downstream direction L0s state */
47761+#define ASPM_STATE_L1 (4U) /* L1 state */
47762 #define ASPM_STATE_L0S (ASPM_STATE_L0S_UP | ASPM_STATE_L0S_DW)
47763 #define ASPM_STATE_ALL (ASPM_STATE_L0S | ASPM_STATE_L1)
47764
47765diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
47766index ef09f5f..49ac62f 100644
47767--- a/drivers/pci/probe.c
47768+++ b/drivers/pci/probe.c
47769@@ -175,7 +175,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
47770 struct pci_bus_region region, inverted_region;
47771 bool bar_too_big = false, bar_disabled = false;
47772
47773- mask = type ? PCI_ROM_ADDRESS_MASK : ~0;
47774+ mask = type ? (u32)PCI_ROM_ADDRESS_MASK : ~0;
47775
47776 /* No printks while decoding is disabled! */
47777 if (!dev->mmio_always_on) {
47778diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
47779index 46d1378..30e452b 100644
47780--- a/drivers/pci/proc.c
47781+++ b/drivers/pci/proc.c
47782@@ -434,7 +434,16 @@ static const struct file_operations proc_bus_pci_dev_operations = {
47783 static int __init pci_proc_init(void)
47784 {
47785 struct pci_dev *dev = NULL;
47786+
47787+#ifdef CONFIG_GRKERNSEC_PROC_ADD
47788+#ifdef CONFIG_GRKERNSEC_PROC_USER
47789+ proc_bus_pci_dir = proc_mkdir_mode("bus/pci", S_IRUSR | S_IXUSR, NULL);
47790+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
47791+ proc_bus_pci_dir = proc_mkdir_mode("bus/pci", S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP, NULL);
47792+#endif
47793+#else
47794 proc_bus_pci_dir = proc_mkdir("bus/pci", NULL);
47795+#endif
47796 proc_create("devices", 0, proc_bus_pci_dir,
47797 &proc_bus_pci_dev_operations);
47798 proc_initialized = 1;
47799diff --git a/drivers/platform/chrome/chromeos_laptop.c b/drivers/platform/chrome/chromeos_laptop.c
47800index 7f3aad0..7d604bb 100644
47801--- a/drivers/platform/chrome/chromeos_laptop.c
47802+++ b/drivers/platform/chrome/chromeos_laptop.c
47803@@ -406,7 +406,7 @@ static struct chromeos_laptop cr48 = {
47804 .callback = chromeos_laptop_dmi_matched, \
47805 .driver_data = (void *)&board_
47806
47807-static struct dmi_system_id chromeos_laptop_dmi_table[] __initdata = {
47808+static struct dmi_system_id chromeos_laptop_dmi_table[] __initconst = {
47809 {
47810 .ident = "Samsung Series 5 550",
47811 .matches = {
47812diff --git a/drivers/platform/x86/alienware-wmi.c b/drivers/platform/x86/alienware-wmi.c
47813index 541f951..4dfd598 100644
47814--- a/drivers/platform/x86/alienware-wmi.c
47815+++ b/drivers/platform/x86/alienware-wmi.c
47816@@ -132,7 +132,7 @@ struct wmax_led_args {
47817 } __packed;
47818
47819 static struct platform_device *platform_device;
47820-static struct device_attribute *zone_dev_attrs;
47821+static device_attribute_no_const *zone_dev_attrs;
47822 static struct attribute **zone_attrs;
47823 static struct platform_zone *zone_data;
47824
47825@@ -143,7 +143,7 @@ static struct platform_driver platform_driver = {
47826 }
47827 };
47828
47829-static struct attribute_group zone_attribute_group = {
47830+static attribute_group_no_const zone_attribute_group = {
47831 .name = "rgb_zones",
47832 };
47833
47834diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
47835index c5e082f..d6307a0 100644
47836--- a/drivers/platform/x86/asus-wmi.c
47837+++ b/drivers/platform/x86/asus-wmi.c
47838@@ -1595,6 +1595,10 @@ static int show_dsts(struct seq_file *m, void *data)
47839 int err;
47840 u32 retval = -1;
47841
47842+#ifdef CONFIG_GRKERNSEC_KMEM
47843+ return -EPERM;
47844+#endif
47845+
47846 err = asus_wmi_get_devstate(asus, asus->debug.dev_id, &retval);
47847
47848 if (err < 0)
47849@@ -1611,6 +1615,10 @@ static int show_devs(struct seq_file *m, void *data)
47850 int err;
47851 u32 retval = -1;
47852
47853+#ifdef CONFIG_GRKERNSEC_KMEM
47854+ return -EPERM;
47855+#endif
47856+
47857 err = asus_wmi_set_devstate(asus->debug.dev_id, asus->debug.ctrl_param,
47858 &retval);
47859
47860@@ -1635,6 +1643,10 @@ static int show_call(struct seq_file *m, void *data)
47861 union acpi_object *obj;
47862 acpi_status status;
47863
47864+#ifdef CONFIG_GRKERNSEC_KMEM
47865+ return -EPERM;
47866+#endif
47867+
47868 status = wmi_evaluate_method(ASUS_WMI_MGMT_GUID,
47869 1, asus->debug.method_id,
47870 &input, &output);
47871diff --git a/drivers/platform/x86/msi-laptop.c b/drivers/platform/x86/msi-laptop.c
47872index 62f8030..c7f2a45 100644
47873--- a/drivers/platform/x86/msi-laptop.c
47874+++ b/drivers/platform/x86/msi-laptop.c
47875@@ -1000,12 +1000,14 @@ static int __init load_scm_model_init(struct platform_device *sdev)
47876
47877 if (!quirks->ec_read_only) {
47878 /* allow userland write sysfs file */
47879- dev_attr_bluetooth.store = store_bluetooth;
47880- dev_attr_wlan.store = store_wlan;
47881- dev_attr_threeg.store = store_threeg;
47882- dev_attr_bluetooth.attr.mode |= S_IWUSR;
47883- dev_attr_wlan.attr.mode |= S_IWUSR;
47884- dev_attr_threeg.attr.mode |= S_IWUSR;
47885+ pax_open_kernel();
47886+ *(void **)&dev_attr_bluetooth.store = store_bluetooth;
47887+ *(void **)&dev_attr_wlan.store = store_wlan;
47888+ *(void **)&dev_attr_threeg.store = store_threeg;
47889+ *(umode_t *)&dev_attr_bluetooth.attr.mode |= S_IWUSR;
47890+ *(umode_t *)&dev_attr_wlan.attr.mode |= S_IWUSR;
47891+ *(umode_t *)&dev_attr_threeg.attr.mode |= S_IWUSR;
47892+ pax_close_kernel();
47893 }
47894
47895 /* disable hardware control by fn key */
47896diff --git a/drivers/platform/x86/msi-wmi.c b/drivers/platform/x86/msi-wmi.c
47897index 70222f2..8c8ce66 100644
47898--- a/drivers/platform/x86/msi-wmi.c
47899+++ b/drivers/platform/x86/msi-wmi.c
47900@@ -183,7 +183,7 @@ static const struct backlight_ops msi_backlight_ops = {
47901 static void msi_wmi_notify(u32 value, void *context)
47902 {
47903 struct acpi_buffer response = { ACPI_ALLOCATE_BUFFER, NULL };
47904- static struct key_entry *key;
47905+ struct key_entry *key;
47906 union acpi_object *obj;
47907 acpi_status status;
47908
47909diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
47910index 9c5a074..06c976a 100644
47911--- a/drivers/platform/x86/sony-laptop.c
47912+++ b/drivers/platform/x86/sony-laptop.c
47913@@ -2527,7 +2527,7 @@ static void sony_nc_gfx_switch_cleanup(struct platform_device *pd)
47914 }
47915
47916 /* High speed charging function */
47917-static struct device_attribute *hsc_handle;
47918+static device_attribute_no_const *hsc_handle;
47919
47920 static ssize_t sony_nc_highspeed_charging_store(struct device *dev,
47921 struct device_attribute *attr,
47922@@ -2601,7 +2601,7 @@ static void sony_nc_highspeed_charging_cleanup(struct platform_device *pd)
47923 }
47924
47925 /* low battery function */
47926-static struct device_attribute *lowbatt_handle;
47927+static device_attribute_no_const *lowbatt_handle;
47928
47929 static ssize_t sony_nc_lowbatt_store(struct device *dev,
47930 struct device_attribute *attr,
47931@@ -2667,7 +2667,7 @@ static void sony_nc_lowbatt_cleanup(struct platform_device *pd)
47932 }
47933
47934 /* fan speed function */
47935-static struct device_attribute *fan_handle, *hsf_handle;
47936+static device_attribute_no_const *fan_handle, *hsf_handle;
47937
47938 static ssize_t sony_nc_hsfan_store(struct device *dev,
47939 struct device_attribute *attr,
47940@@ -2774,7 +2774,7 @@ static void sony_nc_fanspeed_cleanup(struct platform_device *pd)
47941 }
47942
47943 /* USB charge function */
47944-static struct device_attribute *uc_handle;
47945+static device_attribute_no_const *uc_handle;
47946
47947 static ssize_t sony_nc_usb_charge_store(struct device *dev,
47948 struct device_attribute *attr,
47949@@ -2848,7 +2848,7 @@ static void sony_nc_usb_charge_cleanup(struct platform_device *pd)
47950 }
47951
47952 /* Panel ID function */
47953-static struct device_attribute *panel_handle;
47954+static device_attribute_no_const *panel_handle;
47955
47956 static ssize_t sony_nc_panelid_show(struct device *dev,
47957 struct device_attribute *attr, char *buffer)
47958@@ -2895,7 +2895,7 @@ static void sony_nc_panelid_cleanup(struct platform_device *pd)
47959 }
47960
47961 /* smart connect function */
47962-static struct device_attribute *sc_handle;
47963+static device_attribute_no_const *sc_handle;
47964
47965 static ssize_t sony_nc_smart_conn_store(struct device *dev,
47966 struct device_attribute *attr,
47967diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
47968index 15e61c1..40a39c7 100644
47969--- a/drivers/platform/x86/thinkpad_acpi.c
47970+++ b/drivers/platform/x86/thinkpad_acpi.c
47971@@ -2094,7 +2094,7 @@ static int hotkey_mask_get(void)
47972 return 0;
47973 }
47974
47975-void static hotkey_mask_warn_incomplete_mask(void)
47976+static void hotkey_mask_warn_incomplete_mask(void)
47977 {
47978 /* log only what the user can fix... */
47979 const u32 wantedmask = hotkey_driver_mask &
47980@@ -2438,10 +2438,10 @@ static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn,
47981 && !tp_features.bright_unkfw)
47982 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME);
47983 }
47984+}
47985
47986 #undef TPACPI_COMPARE_KEY
47987 #undef TPACPI_MAY_SEND_KEY
47988-}
47989
47990 /*
47991 * Polling driver
47992diff --git a/drivers/pnp/pnpbios/bioscalls.c b/drivers/pnp/pnpbios/bioscalls.c
47993index 438d4c7..ca8a2fb 100644
47994--- a/drivers/pnp/pnpbios/bioscalls.c
47995+++ b/drivers/pnp/pnpbios/bioscalls.c
47996@@ -59,7 +59,7 @@ do { \
47997 set_desc_limit(&gdt[(selname) >> 3], (size) - 1); \
47998 } while(0)
47999
48000-static struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4092,
48001+static const struct desc_struct bad_bios_desc = GDT_ENTRY_INIT(0x4093,
48002 (unsigned long)__va(0x400UL), PAGE_SIZE - 0x400 - 1);
48003
48004 /*
48005@@ -96,7 +96,10 @@ static inline u16 call_pnp_bios(u16 func, u16 arg1, u16 arg2, u16 arg3,
48006
48007 cpu = get_cpu();
48008 save_desc_40 = get_cpu_gdt_table(cpu)[0x40 / 8];
48009+
48010+ pax_open_kernel();
48011 get_cpu_gdt_table(cpu)[0x40 / 8] = bad_bios_desc;
48012+ pax_close_kernel();
48013
48014 /* On some boxes IRQ's during PnP BIOS calls are deadly. */
48015 spin_lock_irqsave(&pnp_bios_lock, flags);
48016@@ -134,7 +137,10 @@ static inline u16 call_pnp_bios(u16 func, u16 arg1, u16 arg2, u16 arg3,
48017 :"memory");
48018 spin_unlock_irqrestore(&pnp_bios_lock, flags);
48019
48020+ pax_open_kernel();
48021 get_cpu_gdt_table(cpu)[0x40 / 8] = save_desc_40;
48022+ pax_close_kernel();
48023+
48024 put_cpu();
48025
48026 /* If we get here and this is set then the PnP BIOS faulted on us. */
48027@@ -468,7 +474,7 @@ int pnp_bios_read_escd(char *data, u32 nvram_base)
48028 return status;
48029 }
48030
48031-void pnpbios_calls_init(union pnp_bios_install_struct *header)
48032+void __init pnpbios_calls_init(union pnp_bios_install_struct *header)
48033 {
48034 int i;
48035
48036@@ -476,6 +482,8 @@ void pnpbios_calls_init(union pnp_bios_install_struct *header)
48037 pnp_bios_callpoint.offset = header->fields.pm16offset;
48038 pnp_bios_callpoint.segment = PNP_CS16;
48039
48040+ pax_open_kernel();
48041+
48042 for_each_possible_cpu(i) {
48043 struct desc_struct *gdt = get_cpu_gdt_table(i);
48044 if (!gdt)
48045@@ -487,4 +495,6 @@ void pnpbios_calls_init(union pnp_bios_install_struct *header)
48046 set_desc_base(&gdt[GDT_ENTRY_PNPBIOS_DS],
48047 (unsigned long)__va(header->fields.pm16dseg));
48048 }
48049+
48050+ pax_close_kernel();
48051 }
48052diff --git a/drivers/pnp/resource.c b/drivers/pnp/resource.c
48053index 01712cb..782e822 100644
48054--- a/drivers/pnp/resource.c
48055+++ b/drivers/pnp/resource.c
48056@@ -360,7 +360,7 @@ int pnp_check_irq(struct pnp_dev *dev, struct resource *res)
48057 return 1;
48058
48059 /* check if the resource is valid */
48060- if (*irq < 0 || *irq > 15)
48061+ if (*irq > 15)
48062 return 0;
48063
48064 /* check if the resource is reserved */
48065@@ -424,7 +424,7 @@ int pnp_check_dma(struct pnp_dev *dev, struct resource *res)
48066 return 1;
48067
48068 /* check if the resource is valid */
48069- if (*dma < 0 || *dma == 4 || *dma > 7)
48070+ if (*dma == 4 || *dma > 7)
48071 return 0;
48072
48073 /* check if the resource is reserved */
48074diff --git a/drivers/power/pda_power.c b/drivers/power/pda_power.c
48075index 0c52e2a..3421ab7 100644
48076--- a/drivers/power/pda_power.c
48077+++ b/drivers/power/pda_power.c
48078@@ -37,7 +37,11 @@ static int polling;
48079
48080 #if IS_ENABLED(CONFIG_USB_PHY)
48081 static struct usb_phy *transceiver;
48082-static struct notifier_block otg_nb;
48083+static int otg_handle_notification(struct notifier_block *nb,
48084+ unsigned long event, void *unused);
48085+static struct notifier_block otg_nb = {
48086+ .notifier_call = otg_handle_notification
48087+};
48088 #endif
48089
48090 static struct regulator *ac_draw;
48091@@ -369,7 +373,6 @@ static int pda_power_probe(struct platform_device *pdev)
48092
48093 #if IS_ENABLED(CONFIG_USB_PHY)
48094 if (!IS_ERR_OR_NULL(transceiver) && pdata->use_otg_notifier) {
48095- otg_nb.notifier_call = otg_handle_notification;
48096 ret = usb_register_notifier(transceiver, &otg_nb);
48097 if (ret) {
48098 dev_err(dev, "failure to register otg notifier\n");
48099diff --git a/drivers/power/power_supply.h b/drivers/power/power_supply.h
48100index cc439fd..8fa30df 100644
48101--- a/drivers/power/power_supply.h
48102+++ b/drivers/power/power_supply.h
48103@@ -16,12 +16,12 @@ struct power_supply;
48104
48105 #ifdef CONFIG_SYSFS
48106
48107-extern void power_supply_init_attrs(struct device_type *dev_type);
48108+extern void power_supply_init_attrs(void);
48109 extern int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env);
48110
48111 #else
48112
48113-static inline void power_supply_init_attrs(struct device_type *dev_type) {}
48114+static inline void power_supply_init_attrs(void) {}
48115 #define power_supply_uevent NULL
48116
48117 #endif /* CONFIG_SYSFS */
48118diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
48119index 2660664..75fcb04 100644
48120--- a/drivers/power/power_supply_core.c
48121+++ b/drivers/power/power_supply_core.c
48122@@ -28,7 +28,10 @@ EXPORT_SYMBOL_GPL(power_supply_class);
48123 ATOMIC_NOTIFIER_HEAD(power_supply_notifier);
48124 EXPORT_SYMBOL_GPL(power_supply_notifier);
48125
48126-static struct device_type power_supply_dev_type;
48127+extern const struct attribute_group *power_supply_attr_groups[];
48128+static struct device_type power_supply_dev_type = {
48129+ .groups = power_supply_attr_groups,
48130+};
48131
48132 static bool __power_supply_is_supplied_by(struct power_supply *supplier,
48133 struct power_supply *supply)
48134@@ -628,7 +631,7 @@ static int __init power_supply_class_init(void)
48135 return PTR_ERR(power_supply_class);
48136
48137 power_supply_class->dev_uevent = power_supply_uevent;
48138- power_supply_init_attrs(&power_supply_dev_type);
48139+ power_supply_init_attrs();
48140
48141 return 0;
48142 }
48143diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
48144index 44420d1..967126e 100644
48145--- a/drivers/power/power_supply_sysfs.c
48146+++ b/drivers/power/power_supply_sysfs.c
48147@@ -230,17 +230,15 @@ static struct attribute_group power_supply_attr_group = {
48148 .is_visible = power_supply_attr_is_visible,
48149 };
48150
48151-static const struct attribute_group *power_supply_attr_groups[] = {
48152+const struct attribute_group *power_supply_attr_groups[] = {
48153 &power_supply_attr_group,
48154 NULL,
48155 };
48156
48157-void power_supply_init_attrs(struct device_type *dev_type)
48158+void power_supply_init_attrs(void)
48159 {
48160 int i;
48161
48162- dev_type->groups = power_supply_attr_groups;
48163-
48164 for (i = 0; i < ARRAY_SIZE(power_supply_attrs); i++)
48165 __power_supply_attrs[i] = &power_supply_attrs[i].attr;
48166 }
48167diff --git a/drivers/powercap/powercap_sys.c b/drivers/powercap/powercap_sys.c
48168index 84419af..268ede8 100644
48169--- a/drivers/powercap/powercap_sys.c
48170+++ b/drivers/powercap/powercap_sys.c
48171@@ -154,8 +154,77 @@ struct powercap_constraint_attr {
48172 struct device_attribute name_attr;
48173 };
48174
48175+static ssize_t show_constraint_name(struct device *dev,
48176+ struct device_attribute *dev_attr,
48177+ char *buf);
48178+
48179 static struct powercap_constraint_attr
48180- constraint_attrs[MAX_CONSTRAINTS_PER_ZONE];
48181+ constraint_attrs[MAX_CONSTRAINTS_PER_ZONE] = {
48182+ [0 ... MAX_CONSTRAINTS_PER_ZONE - 1] = {
48183+ .power_limit_attr = {
48184+ .attr = {
48185+ .name = NULL,
48186+ .mode = S_IWUSR | S_IRUGO
48187+ },
48188+ .show = show_constraint_power_limit_uw,
48189+ .store = store_constraint_power_limit_uw
48190+ },
48191+
48192+ .time_window_attr = {
48193+ .attr = {
48194+ .name = NULL,
48195+ .mode = S_IWUSR | S_IRUGO
48196+ },
48197+ .show = show_constraint_time_window_us,
48198+ .store = store_constraint_time_window_us
48199+ },
48200+
48201+ .max_power_attr = {
48202+ .attr = {
48203+ .name = NULL,
48204+ .mode = S_IRUGO
48205+ },
48206+ .show = show_constraint_max_power_uw,
48207+ .store = NULL
48208+ },
48209+
48210+ .min_power_attr = {
48211+ .attr = {
48212+ .name = NULL,
48213+ .mode = S_IRUGO
48214+ },
48215+ .show = show_constraint_min_power_uw,
48216+ .store = NULL
48217+ },
48218+
48219+ .max_time_window_attr = {
48220+ .attr = {
48221+ .name = NULL,
48222+ .mode = S_IRUGO
48223+ },
48224+ .show = show_constraint_max_time_window_us,
48225+ .store = NULL
48226+ },
48227+
48228+ .min_time_window_attr = {
48229+ .attr = {
48230+ .name = NULL,
48231+ .mode = S_IRUGO
48232+ },
48233+ .show = show_constraint_min_time_window_us,
48234+ .store = NULL
48235+ },
48236+
48237+ .name_attr = {
48238+ .attr = {
48239+ .name = NULL,
48240+ .mode = S_IRUGO
48241+ },
48242+ .show = show_constraint_name,
48243+ .store = NULL
48244+ }
48245+ }
48246+};
48247
48248 /* A list of powercap control_types */
48249 static LIST_HEAD(powercap_cntrl_list);
48250@@ -193,23 +262,16 @@ static ssize_t show_constraint_name(struct device *dev,
48251 }
48252
48253 static int create_constraint_attribute(int id, const char *name,
48254- int mode,
48255- struct device_attribute *dev_attr,
48256- ssize_t (*show)(struct device *,
48257- struct device_attribute *, char *),
48258- ssize_t (*store)(struct device *,
48259- struct device_attribute *,
48260- const char *, size_t)
48261- )
48262+ struct device_attribute *dev_attr)
48263 {
48264+ name = kasprintf(GFP_KERNEL, "constraint_%d_%s", id, name);
48265
48266- dev_attr->attr.name = kasprintf(GFP_KERNEL, "constraint_%d_%s",
48267- id, name);
48268- if (!dev_attr->attr.name)
48269+ if (!name)
48270 return -ENOMEM;
48271- dev_attr->attr.mode = mode;
48272- dev_attr->show = show;
48273- dev_attr->store = store;
48274+
48275+ pax_open_kernel();
48276+ *(const char **)&dev_attr->attr.name = name;
48277+ pax_close_kernel();
48278
48279 return 0;
48280 }
48281@@ -236,49 +298,31 @@ static int seed_constraint_attributes(void)
48282
48283 for (i = 0; i < MAX_CONSTRAINTS_PER_ZONE; ++i) {
48284 ret = create_constraint_attribute(i, "power_limit_uw",
48285- S_IWUSR | S_IRUGO,
48286- &constraint_attrs[i].power_limit_attr,
48287- show_constraint_power_limit_uw,
48288- store_constraint_power_limit_uw);
48289+ &constraint_attrs[i].power_limit_attr);
48290 if (ret)
48291 goto err_alloc;
48292 ret = create_constraint_attribute(i, "time_window_us",
48293- S_IWUSR | S_IRUGO,
48294- &constraint_attrs[i].time_window_attr,
48295- show_constraint_time_window_us,
48296- store_constraint_time_window_us);
48297+ &constraint_attrs[i].time_window_attr);
48298 if (ret)
48299 goto err_alloc;
48300- ret = create_constraint_attribute(i, "name", S_IRUGO,
48301- &constraint_attrs[i].name_attr,
48302- show_constraint_name,
48303- NULL);
48304+ ret = create_constraint_attribute(i, "name",
48305+ &constraint_attrs[i].name_attr);
48306 if (ret)
48307 goto err_alloc;
48308- ret = create_constraint_attribute(i, "max_power_uw", S_IRUGO,
48309- &constraint_attrs[i].max_power_attr,
48310- show_constraint_max_power_uw,
48311- NULL);
48312+ ret = create_constraint_attribute(i, "max_power_uw",
48313+ &constraint_attrs[i].max_power_attr);
48314 if (ret)
48315 goto err_alloc;
48316- ret = create_constraint_attribute(i, "min_power_uw", S_IRUGO,
48317- &constraint_attrs[i].min_power_attr,
48318- show_constraint_min_power_uw,
48319- NULL);
48320+ ret = create_constraint_attribute(i, "min_power_uw",
48321+ &constraint_attrs[i].min_power_attr);
48322 if (ret)
48323 goto err_alloc;
48324 ret = create_constraint_attribute(i, "max_time_window_us",
48325- S_IRUGO,
48326- &constraint_attrs[i].max_time_window_attr,
48327- show_constraint_max_time_window_us,
48328- NULL);
48329+ &constraint_attrs[i].max_time_window_attr);
48330 if (ret)
48331 goto err_alloc;
48332 ret = create_constraint_attribute(i, "min_time_window_us",
48333- S_IRUGO,
48334- &constraint_attrs[i].min_time_window_attr,
48335- show_constraint_min_time_window_us,
48336- NULL);
48337+ &constraint_attrs[i].min_time_window_attr);
48338 if (ret)
48339 goto err_alloc;
48340
48341@@ -378,10 +422,12 @@ static void create_power_zone_common_attributes(
48342 power_zone->zone_dev_attrs[count++] =
48343 &dev_attr_max_energy_range_uj.attr;
48344 if (power_zone->ops->get_energy_uj) {
48345+ pax_open_kernel();
48346 if (power_zone->ops->reset_energy_uj)
48347- dev_attr_energy_uj.attr.mode = S_IWUSR | S_IRUGO;
48348+ *(umode_t *)&dev_attr_energy_uj.attr.mode = S_IWUSR | S_IRUGO;
48349 else
48350- dev_attr_energy_uj.attr.mode = S_IRUGO;
48351+ *(umode_t *)&dev_attr_energy_uj.attr.mode = S_IRUGO;
48352+ pax_close_kernel();
48353 power_zone->zone_dev_attrs[count++] =
48354 &dev_attr_energy_uj.attr;
48355 }
48356diff --git a/drivers/ptp/ptp_private.h b/drivers/ptp/ptp_private.h
48357index 9c5d414..c7900ce 100644
48358--- a/drivers/ptp/ptp_private.h
48359+++ b/drivers/ptp/ptp_private.h
48360@@ -51,7 +51,7 @@ struct ptp_clock {
48361 struct mutex pincfg_mux; /* protect concurrent info->pin_config access */
48362 wait_queue_head_t tsev_wq;
48363 int defunct; /* tells readers to go away when clock is being removed */
48364- struct device_attribute *pin_dev_attr;
48365+ device_attribute_no_const *pin_dev_attr;
48366 struct attribute **pin_attr;
48367 struct attribute_group pin_attr_group;
48368 };
48369diff --git a/drivers/ptp/ptp_sysfs.c b/drivers/ptp/ptp_sysfs.c
48370index 302e626..12579af 100644
48371--- a/drivers/ptp/ptp_sysfs.c
48372+++ b/drivers/ptp/ptp_sysfs.c
48373@@ -280,7 +280,7 @@ static int ptp_populate_pins(struct ptp_clock *ptp)
48374 goto no_pin_attr;
48375
48376 for (i = 0; i < n_pins; i++) {
48377- struct device_attribute *da = &ptp->pin_dev_attr[i];
48378+ device_attribute_no_const *da = &ptp->pin_dev_attr[i];
48379 sysfs_attr_init(&da->attr);
48380 da->attr.name = info->pin_config[i].name;
48381 da->attr.mode = 0644;
48382diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
48383index 9a09f3c..450b523 100644
48384--- a/drivers/regulator/core.c
48385+++ b/drivers/regulator/core.c
48386@@ -3380,7 +3380,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
48387 {
48388 const struct regulation_constraints *constraints = NULL;
48389 const struct regulator_init_data *init_data;
48390- static atomic_t regulator_no = ATOMIC_INIT(0);
48391+ static atomic_unchecked_t regulator_no = ATOMIC_INIT(0);
48392 struct regulator_dev *rdev;
48393 struct device *dev;
48394 int ret, i;
48395@@ -3450,7 +3450,7 @@ regulator_register(const struct regulator_desc *regulator_desc,
48396 rdev->dev.of_node = config->of_node;
48397 rdev->dev.parent = dev;
48398 dev_set_name(&rdev->dev, "regulator.%d",
48399- atomic_inc_return(&regulator_no) - 1);
48400+ atomic_inc_return_unchecked(&regulator_no) - 1);
48401 ret = device_register(&rdev->dev);
48402 if (ret != 0) {
48403 put_device(&rdev->dev);
48404diff --git a/drivers/regulator/max8660.c b/drivers/regulator/max8660.c
48405index 2fc4111..6aa88ca 100644
48406--- a/drivers/regulator/max8660.c
48407+++ b/drivers/regulator/max8660.c
48408@@ -424,8 +424,10 @@ static int max8660_probe(struct i2c_client *client,
48409 max8660->shadow_regs[MAX8660_OVER1] = 5;
48410 } else {
48411 /* Otherwise devices can be toggled via software */
48412- max8660_dcdc_ops.enable = max8660_dcdc_enable;
48413- max8660_dcdc_ops.disable = max8660_dcdc_disable;
48414+ pax_open_kernel();
48415+ *(void **)&max8660_dcdc_ops.enable = max8660_dcdc_enable;
48416+ *(void **)&max8660_dcdc_ops.disable = max8660_dcdc_disable;
48417+ pax_close_kernel();
48418 }
48419
48420 /*
48421diff --git a/drivers/regulator/max8973-regulator.c b/drivers/regulator/max8973-regulator.c
48422index dbedf17..18ff6b7 100644
48423--- a/drivers/regulator/max8973-regulator.c
48424+++ b/drivers/regulator/max8973-regulator.c
48425@@ -403,9 +403,11 @@ static int max8973_probe(struct i2c_client *client,
48426 if (!pdata || !pdata->enable_ext_control) {
48427 max->desc.enable_reg = MAX8973_VOUT;
48428 max->desc.enable_mask = MAX8973_VOUT_ENABLE;
48429- max->ops.enable = regulator_enable_regmap;
48430- max->ops.disable = regulator_disable_regmap;
48431- max->ops.is_enabled = regulator_is_enabled_regmap;
48432+ pax_open_kernel();
48433+ *(void **)&max->ops.enable = regulator_enable_regmap;
48434+ *(void **)&max->ops.disable = regulator_disable_regmap;
48435+ *(void **)&max->ops.is_enabled = regulator_is_enabled_regmap;
48436+ pax_close_kernel();
48437 }
48438
48439 if (pdata) {
48440diff --git a/drivers/regulator/mc13892-regulator.c b/drivers/regulator/mc13892-regulator.c
48441index f374fa5..26f0683 100644
48442--- a/drivers/regulator/mc13892-regulator.c
48443+++ b/drivers/regulator/mc13892-regulator.c
48444@@ -582,10 +582,12 @@ static int mc13892_regulator_probe(struct platform_device *pdev)
48445 }
48446 mc13xxx_unlock(mc13892);
48447
48448- mc13892_regulators[MC13892_VCAM].desc.ops->set_mode
48449+ pax_open_kernel();
48450+ *(void **)&mc13892_regulators[MC13892_VCAM].desc.ops->set_mode
48451 = mc13892_vcam_set_mode;
48452- mc13892_regulators[MC13892_VCAM].desc.ops->get_mode
48453+ *(void **)&mc13892_regulators[MC13892_VCAM].desc.ops->get_mode
48454 = mc13892_vcam_get_mode;
48455+ pax_close_kernel();
48456
48457 mc13xxx_data = mc13xxx_parse_regulators_dt(pdev, mc13892_regulators,
48458 ARRAY_SIZE(mc13892_regulators));
48459diff --git a/drivers/rtc/rtc-cmos.c b/drivers/rtc/rtc-cmos.c
48460index 0963c93..ea29cce 100644
48461--- a/drivers/rtc/rtc-cmos.c
48462+++ b/drivers/rtc/rtc-cmos.c
48463@@ -777,7 +777,9 @@ cmos_do_probe(struct device *dev, struct resource *ports, int rtc_irq)
48464 hpet_rtc_timer_init();
48465
48466 /* export at least the first block of NVRAM */
48467- nvram.size = address_space - NVRAM_OFFSET;
48468+ pax_open_kernel();
48469+ *(size_t *)&nvram.size = address_space - NVRAM_OFFSET;
48470+ pax_close_kernel();
48471 retval = sysfs_create_bin_file(&dev->kobj, &nvram);
48472 if (retval < 0) {
48473 dev_dbg(dev, "can't create nvram file? %d\n", retval);
48474diff --git a/drivers/rtc/rtc-dev.c b/drivers/rtc/rtc-dev.c
48475index d049393..bb20be0 100644
48476--- a/drivers/rtc/rtc-dev.c
48477+++ b/drivers/rtc/rtc-dev.c
48478@@ -16,6 +16,7 @@
48479 #include <linux/module.h>
48480 #include <linux/rtc.h>
48481 #include <linux/sched.h>
48482+#include <linux/grsecurity.h>
48483 #include "rtc-core.h"
48484
48485 static dev_t rtc_devt;
48486@@ -347,6 +348,8 @@ static long rtc_dev_ioctl(struct file *file,
48487 if (copy_from_user(&tm, uarg, sizeof(tm)))
48488 return -EFAULT;
48489
48490+ gr_log_timechange();
48491+
48492 return rtc_set_time(rtc, &tm);
48493
48494 case RTC_PIE_ON:
48495diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c
48496index f03d5ba..8325bf6 100644
48497--- a/drivers/rtc/rtc-ds1307.c
48498+++ b/drivers/rtc/rtc-ds1307.c
48499@@ -107,7 +107,7 @@ struct ds1307 {
48500 u8 offset; /* register's offset */
48501 u8 regs[11];
48502 u16 nvram_offset;
48503- struct bin_attribute *nvram;
48504+ bin_attribute_no_const *nvram;
48505 enum ds_type type;
48506 unsigned long flags;
48507 #define HAS_NVRAM 0 /* bit 0 == sysfs file active */
48508diff --git a/drivers/rtc/rtc-m48t59.c b/drivers/rtc/rtc-m48t59.c
48509index 11880c1..b823aa4 100644
48510--- a/drivers/rtc/rtc-m48t59.c
48511+++ b/drivers/rtc/rtc-m48t59.c
48512@@ -483,7 +483,9 @@ static int m48t59_rtc_probe(struct platform_device *pdev)
48513 if (IS_ERR(m48t59->rtc))
48514 return PTR_ERR(m48t59->rtc);
48515
48516- m48t59_nvram_attr.size = pdata->offset;
48517+ pax_open_kernel();
48518+ *(size_t *)&m48t59_nvram_attr.size = pdata->offset;
48519+ pax_close_kernel();
48520
48521 ret = sysfs_create_bin_file(&pdev->dev.kobj, &m48t59_nvram_attr);
48522 if (ret)
48523diff --git a/drivers/scsi/aic7xxx/aic79xx_pci.c b/drivers/scsi/aic7xxx/aic79xx_pci.c
48524index 14b5f8d..cc9bd26 100644
48525--- a/drivers/scsi/aic7xxx/aic79xx_pci.c
48526+++ b/drivers/scsi/aic7xxx/aic79xx_pci.c
48527@@ -827,7 +827,7 @@ ahd_pci_intr(struct ahd_softc *ahd)
48528 for (bit = 0; bit < 8; bit++) {
48529
48530 if ((pci_status[i] & (0x1 << bit)) != 0) {
48531- static const char *s;
48532+ const char *s;
48533
48534 s = pci_status_strings[bit];
48535 if (i == 7/*TARG*/ && bit == 3)
48536@@ -887,23 +887,15 @@ ahd_pci_split_intr(struct ahd_softc *ahd, u_int intstat)
48537
48538 for (bit = 0; bit < 8; bit++) {
48539
48540- if ((split_status[i] & (0x1 << bit)) != 0) {
48541- static const char *s;
48542-
48543- s = split_status_strings[bit];
48544- printk(s, ahd_name(ahd),
48545+ if ((split_status[i] & (0x1 << bit)) != 0)
48546+ printk(split_status_strings[bit], ahd_name(ahd),
48547 split_status_source[i]);
48548- }
48549
48550 if (i > 1)
48551 continue;
48552
48553- if ((sg_split_status[i] & (0x1 << bit)) != 0) {
48554- static const char *s;
48555-
48556- s = split_status_strings[bit];
48557- printk(s, ahd_name(ahd), "SG");
48558- }
48559+ if ((sg_split_status[i] & (0x1 << bit)) != 0)
48560+ printk(split_status_strings[bit], ahd_name(ahd), "SG");
48561 }
48562 }
48563 /*
48564diff --git a/drivers/scsi/bfa/bfa_fcpim.h b/drivers/scsi/bfa/bfa_fcpim.h
48565index e693af6..2e525b6 100644
48566--- a/drivers/scsi/bfa/bfa_fcpim.h
48567+++ b/drivers/scsi/bfa/bfa_fcpim.h
48568@@ -36,7 +36,7 @@ struct bfa_iotag_s {
48569
48570 struct bfa_itn_s {
48571 bfa_isr_func_t isr;
48572-};
48573+} __no_const;
48574
48575 void bfa_itn_create(struct bfa_s *bfa, struct bfa_rport_s *rport,
48576 void (*isr)(struct bfa_s *bfa, struct bfi_msg_s *m));
48577diff --git a/drivers/scsi/bfa/bfa_fcs.c b/drivers/scsi/bfa/bfa_fcs.c
48578index a3ab5cc..8143622 100644
48579--- a/drivers/scsi/bfa/bfa_fcs.c
48580+++ b/drivers/scsi/bfa/bfa_fcs.c
48581@@ -38,10 +38,21 @@ struct bfa_fcs_mod_s {
48582 #define BFA_FCS_MODULE(_mod) { _mod ## _modinit, _mod ## _modexit }
48583
48584 static struct bfa_fcs_mod_s fcs_modules[] = {
48585- { bfa_fcs_port_attach, NULL, NULL },
48586- { bfa_fcs_uf_attach, NULL, NULL },
48587- { bfa_fcs_fabric_attach, bfa_fcs_fabric_modinit,
48588- bfa_fcs_fabric_modexit },
48589+ {
48590+ .attach = bfa_fcs_port_attach,
48591+ .modinit = NULL,
48592+ .modexit = NULL
48593+ },
48594+ {
48595+ .attach = bfa_fcs_uf_attach,
48596+ .modinit = NULL,
48597+ .modexit = NULL
48598+ },
48599+ {
48600+ .attach = bfa_fcs_fabric_attach,
48601+ .modinit = bfa_fcs_fabric_modinit,
48602+ .modexit = bfa_fcs_fabric_modexit
48603+ },
48604 };
48605
48606 /*
48607diff --git a/drivers/scsi/bfa/bfa_fcs_lport.c b/drivers/scsi/bfa/bfa_fcs_lport.c
48608index ff75ef8..2dfe00a 100644
48609--- a/drivers/scsi/bfa/bfa_fcs_lport.c
48610+++ b/drivers/scsi/bfa/bfa_fcs_lport.c
48611@@ -89,15 +89,26 @@ static struct {
48612 void (*offline) (struct bfa_fcs_lport_s *port);
48613 } __port_action[] = {
48614 {
48615- bfa_fcs_lport_unknown_init, bfa_fcs_lport_unknown_online,
48616- bfa_fcs_lport_unknown_offline}, {
48617- bfa_fcs_lport_fab_init, bfa_fcs_lport_fab_online,
48618- bfa_fcs_lport_fab_offline}, {
48619- bfa_fcs_lport_n2n_init, bfa_fcs_lport_n2n_online,
48620- bfa_fcs_lport_n2n_offline}, {
48621- bfa_fcs_lport_loop_init, bfa_fcs_lport_loop_online,
48622- bfa_fcs_lport_loop_offline},
48623- };
48624+ .init = bfa_fcs_lport_unknown_init,
48625+ .online = bfa_fcs_lport_unknown_online,
48626+ .offline = bfa_fcs_lport_unknown_offline
48627+ },
48628+ {
48629+ .init = bfa_fcs_lport_fab_init,
48630+ .online = bfa_fcs_lport_fab_online,
48631+ .offline = bfa_fcs_lport_fab_offline
48632+ },
48633+ {
48634+ .init = bfa_fcs_lport_n2n_init,
48635+ .online = bfa_fcs_lport_n2n_online,
48636+ .offline = bfa_fcs_lport_n2n_offline
48637+ },
48638+ {
48639+ .init = bfa_fcs_lport_loop_init,
48640+ .online = bfa_fcs_lport_loop_online,
48641+ .offline = bfa_fcs_lport_loop_offline
48642+ },
48643+};
48644
48645 /*
48646 * fcs_port_sm FCS logical port state machine
48647diff --git a/drivers/scsi/bfa/bfa_ioc.h b/drivers/scsi/bfa/bfa_ioc.h
48648index 2e28392..9d865b6 100644
48649--- a/drivers/scsi/bfa/bfa_ioc.h
48650+++ b/drivers/scsi/bfa/bfa_ioc.h
48651@@ -258,7 +258,7 @@ struct bfa_ioc_cbfn_s {
48652 bfa_ioc_disable_cbfn_t disable_cbfn;
48653 bfa_ioc_hbfail_cbfn_t hbfail_cbfn;
48654 bfa_ioc_reset_cbfn_t reset_cbfn;
48655-};
48656+} __no_const;
48657
48658 /*
48659 * IOC event notification mechanism.
48660@@ -352,7 +352,7 @@ struct bfa_ioc_hwif_s {
48661 void (*ioc_set_alt_fwstate) (struct bfa_ioc_s *ioc,
48662 enum bfi_ioc_state fwstate);
48663 enum bfi_ioc_state (*ioc_get_alt_fwstate) (struct bfa_ioc_s *ioc);
48664-};
48665+} __no_const;
48666
48667 /*
48668 * Queue element to wait for room in request queue. FIFO order is
48669diff --git a/drivers/scsi/bfa/bfa_modules.h b/drivers/scsi/bfa/bfa_modules.h
48670index a14c784..6de6790 100644
48671--- a/drivers/scsi/bfa/bfa_modules.h
48672+++ b/drivers/scsi/bfa/bfa_modules.h
48673@@ -78,12 +78,12 @@ enum {
48674 \
48675 extern struct bfa_module_s hal_mod_ ## __mod; \
48676 struct bfa_module_s hal_mod_ ## __mod = { \
48677- bfa_ ## __mod ## _meminfo, \
48678- bfa_ ## __mod ## _attach, \
48679- bfa_ ## __mod ## _detach, \
48680- bfa_ ## __mod ## _start, \
48681- bfa_ ## __mod ## _stop, \
48682- bfa_ ## __mod ## _iocdisable, \
48683+ .meminfo = bfa_ ## __mod ## _meminfo, \
48684+ .attach = bfa_ ## __mod ## _attach, \
48685+ .detach = bfa_ ## __mod ## _detach, \
48686+ .start = bfa_ ## __mod ## _start, \
48687+ .stop = bfa_ ## __mod ## _stop, \
48688+ .iocdisable = bfa_ ## __mod ## _iocdisable, \
48689 }
48690
48691 #define BFA_CACHELINE_SZ (256)
48692diff --git a/drivers/scsi/fcoe/fcoe_sysfs.c b/drivers/scsi/fcoe/fcoe_sysfs.c
48693index 045c4e1..13de803 100644
48694--- a/drivers/scsi/fcoe/fcoe_sysfs.c
48695+++ b/drivers/scsi/fcoe/fcoe_sysfs.c
48696@@ -33,8 +33,8 @@
48697 */
48698 #include "libfcoe.h"
48699
48700-static atomic_t ctlr_num;
48701-static atomic_t fcf_num;
48702+static atomic_unchecked_t ctlr_num;
48703+static atomic_unchecked_t fcf_num;
48704
48705 /*
48706 * fcoe_fcf_dev_loss_tmo: the default number of seconds that fcoe sysfs
48707@@ -685,7 +685,7 @@ struct fcoe_ctlr_device *fcoe_ctlr_device_add(struct device *parent,
48708 if (!ctlr)
48709 goto out;
48710
48711- ctlr->id = atomic_inc_return(&ctlr_num) - 1;
48712+ ctlr->id = atomic_inc_return_unchecked(&ctlr_num) - 1;
48713 ctlr->f = f;
48714 ctlr->mode = FIP_CONN_TYPE_FABRIC;
48715 INIT_LIST_HEAD(&ctlr->fcfs);
48716@@ -902,7 +902,7 @@ struct fcoe_fcf_device *fcoe_fcf_device_add(struct fcoe_ctlr_device *ctlr,
48717 fcf->dev.parent = &ctlr->dev;
48718 fcf->dev.bus = &fcoe_bus_type;
48719 fcf->dev.type = &fcoe_fcf_device_type;
48720- fcf->id = atomic_inc_return(&fcf_num) - 1;
48721+ fcf->id = atomic_inc_return_unchecked(&fcf_num) - 1;
48722 fcf->state = FCOE_FCF_STATE_UNKNOWN;
48723
48724 fcf->dev_loss_tmo = ctlr->fcf_dev_loss_tmo;
48725@@ -938,8 +938,8 @@ int __init fcoe_sysfs_setup(void)
48726 {
48727 int error;
48728
48729- atomic_set(&ctlr_num, 0);
48730- atomic_set(&fcf_num, 0);
48731+ atomic_set_unchecked(&ctlr_num, 0);
48732+ atomic_set_unchecked(&fcf_num, 0);
48733
48734 error = bus_register(&fcoe_bus_type);
48735 if (error)
48736diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c
48737index 3cbb57a..95e47a3 100644
48738--- a/drivers/scsi/hosts.c
48739+++ b/drivers/scsi/hosts.c
48740@@ -42,7 +42,7 @@
48741 #include "scsi_logging.h"
48742
48743
48744-static atomic_t scsi_host_next_hn = ATOMIC_INIT(0); /* host_no for next new host */
48745+static atomic_unchecked_t scsi_host_next_hn = ATOMIC_INIT(0); /* host_no for next new host */
48746
48747
48748 static void scsi_host_cls_release(struct device *dev)
48749@@ -369,7 +369,7 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize)
48750 * subtract one because we increment first then return, but we need to
48751 * know what the next host number was before increment
48752 */
48753- shost->host_no = atomic_inc_return(&scsi_host_next_hn) - 1;
48754+ shost->host_no = atomic_inc_return_unchecked(&scsi_host_next_hn) - 1;
48755 shost->dma_channel = 0xff;
48756
48757 /* These three are default values which can be overridden */
48758diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
48759index fda6cf1..7a6b5d8 100644
48760--- a/drivers/scsi/hpsa.c
48761+++ b/drivers/scsi/hpsa.c
48762@@ -699,10 +699,10 @@ static inline u32 next_command(struct ctlr_info *h, u8 q)
48763 unsigned long flags;
48764
48765 if (h->transMethod & CFGTBL_Trans_io_accel1)
48766- return h->access.command_completed(h, q);
48767+ return h->access->command_completed(h, q);
48768
48769 if (unlikely(!(h->transMethod & CFGTBL_Trans_Performant)))
48770- return h->access.command_completed(h, q);
48771+ return h->access->command_completed(h, q);
48772
48773 if ((rq->head[rq->current_entry] & 1) == rq->wraparound) {
48774 a = rq->head[rq->current_entry];
48775@@ -5460,7 +5460,7 @@ static void start_io(struct ctlr_info *h)
48776 while (!list_empty(&h->reqQ)) {
48777 c = list_entry(h->reqQ.next, struct CommandList, list);
48778 /* can't do anything if fifo is full */
48779- if ((h->access.fifo_full(h))) {
48780+ if ((h->access->fifo_full(h))) {
48781 h->fifo_recently_full = 1;
48782 dev_warn(&h->pdev->dev, "fifo full\n");
48783 break;
48784@@ -5484,7 +5484,7 @@ static void start_io(struct ctlr_info *h)
48785
48786 /* Tell the controller execute command */
48787 spin_unlock_irqrestore(&h->lock, flags);
48788- h->access.submit_command(h, c);
48789+ h->access->submit_command(h, c);
48790 spin_lock_irqsave(&h->lock, flags);
48791 }
48792 spin_unlock_irqrestore(&h->lock, flags);
48793@@ -5492,17 +5492,17 @@ static void start_io(struct ctlr_info *h)
48794
48795 static inline unsigned long get_next_completion(struct ctlr_info *h, u8 q)
48796 {
48797- return h->access.command_completed(h, q);
48798+ return h->access->command_completed(h, q);
48799 }
48800
48801 static inline bool interrupt_pending(struct ctlr_info *h)
48802 {
48803- return h->access.intr_pending(h);
48804+ return h->access->intr_pending(h);
48805 }
48806
48807 static inline long interrupt_not_for_us(struct ctlr_info *h)
48808 {
48809- return (h->access.intr_pending(h) == 0) ||
48810+ return (h->access->intr_pending(h) == 0) ||
48811 (h->interrupts_enabled == 0);
48812 }
48813
48814@@ -6456,7 +6456,7 @@ static int hpsa_pci_init(struct ctlr_info *h)
48815 if (prod_index < 0)
48816 return -ENODEV;
48817 h->product_name = products[prod_index].product_name;
48818- h->access = *(products[prod_index].access);
48819+ h->access = products[prod_index].access;
48820
48821 pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S |
48822 PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM);
48823@@ -6735,7 +6735,7 @@ static void controller_lockup_detected(struct ctlr_info *h)
48824 {
48825 unsigned long flags;
48826
48827- h->access.set_intr_mask(h, HPSA_INTR_OFF);
48828+ h->access->set_intr_mask(h, HPSA_INTR_OFF);
48829 spin_lock_irqsave(&h->lock, flags);
48830 h->lockup_detected = readl(h->vaddr + SA5_SCRATCHPAD_OFFSET);
48831 spin_unlock_irqrestore(&h->lock, flags);
48832@@ -6963,7 +6963,7 @@ reinit_after_soft_reset:
48833 }
48834
48835 /* make sure the board interrupts are off */
48836- h->access.set_intr_mask(h, HPSA_INTR_OFF);
48837+ h->access->set_intr_mask(h, HPSA_INTR_OFF);
48838
48839 if (hpsa_request_irq(h, do_hpsa_intr_msi, do_hpsa_intr_intx))
48840 goto clean2;
48841@@ -6998,7 +6998,7 @@ reinit_after_soft_reset:
48842 * fake ones to scoop up any residual completions.
48843 */
48844 spin_lock_irqsave(&h->lock, flags);
48845- h->access.set_intr_mask(h, HPSA_INTR_OFF);
48846+ h->access->set_intr_mask(h, HPSA_INTR_OFF);
48847 spin_unlock_irqrestore(&h->lock, flags);
48848 free_irqs(h);
48849 rc = hpsa_request_irq(h, hpsa_msix_discard_completions,
48850@@ -7017,9 +7017,9 @@ reinit_after_soft_reset:
48851 dev_info(&h->pdev->dev, "Board READY.\n");
48852 dev_info(&h->pdev->dev,
48853 "Waiting for stale completions to drain.\n");
48854- h->access.set_intr_mask(h, HPSA_INTR_ON);
48855+ h->access->set_intr_mask(h, HPSA_INTR_ON);
48856 msleep(10000);
48857- h->access.set_intr_mask(h, HPSA_INTR_OFF);
48858+ h->access->set_intr_mask(h, HPSA_INTR_OFF);
48859
48860 rc = controller_reset_failed(h->cfgtable);
48861 if (rc)
48862@@ -7045,7 +7045,7 @@ reinit_after_soft_reset:
48863 h->drv_req_rescan = 0;
48864
48865 /* Turn the interrupts on so we can service requests */
48866- h->access.set_intr_mask(h, HPSA_INTR_ON);
48867+ h->access->set_intr_mask(h, HPSA_INTR_ON);
48868
48869 hpsa_hba_inquiry(h);
48870 hpsa_register_scsi(h); /* hook ourselves into SCSI subsystem */
48871@@ -7114,7 +7114,7 @@ static void hpsa_shutdown(struct pci_dev *pdev)
48872 * To write all data in the battery backed cache to disks
48873 */
48874 hpsa_flush_cache(h);
48875- h->access.set_intr_mask(h, HPSA_INTR_OFF);
48876+ h->access->set_intr_mask(h, HPSA_INTR_OFF);
48877 hpsa_free_irqs_and_disable_msix(h);
48878 }
48879
48880@@ -7232,7 +7232,7 @@ static void hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
48881 CFGTBL_Trans_enable_directed_msix |
48882 (trans_support & (CFGTBL_Trans_io_accel1 |
48883 CFGTBL_Trans_io_accel2));
48884- struct access_method access = SA5_performant_access;
48885+ struct access_method *access = &SA5_performant_access;
48886
48887 /* This is a bit complicated. There are 8 registers on
48888 * the controller which we write to to tell it 8 different
48889@@ -7297,12 +7297,12 @@ static void hpsa_enter_performant_mode(struct ctlr_info *h, u32 trans_support)
48890 * enable outbound interrupt coalescing in accelerator mode;
48891 */
48892 if (trans_support & CFGTBL_Trans_io_accel1) {
48893- access = SA5_ioaccel_mode1_access;
48894+ access = &SA5_ioaccel_mode1_access;
48895 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
48896 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
48897 } else {
48898 if (trans_support & CFGTBL_Trans_io_accel2) {
48899- access = SA5_ioaccel_mode2_access;
48900+ access = &SA5_ioaccel_mode2_access;
48901 writel(10, &h->cfgtable->HostWrite.CoalIntDelay);
48902 writel(4, &h->cfgtable->HostWrite.CoalIntCount);
48903 }
48904diff --git a/drivers/scsi/hpsa.h b/drivers/scsi/hpsa.h
48905index 44235a2..962e91b 100644
48906--- a/drivers/scsi/hpsa.h
48907+++ b/drivers/scsi/hpsa.h
48908@@ -128,7 +128,7 @@ struct ctlr_info {
48909 unsigned int msix_vector;
48910 unsigned int msi_vector;
48911 int intr_mode; /* either PERF_MODE_INT or SIMPLE_MODE_INT */
48912- struct access_method access;
48913+ struct access_method *access;
48914 char hba_mode_enabled;
48915
48916 /* queue and queue Info */
48917@@ -541,35 +541,35 @@ static unsigned long SA5_ioaccel_mode1_completed(struct ctlr_info *h, u8 q)
48918 }
48919
48920 static struct access_method SA5_access = {
48921- SA5_submit_command,
48922- SA5_intr_mask,
48923- SA5_fifo_full,
48924- SA5_intr_pending,
48925- SA5_completed,
48926+ .submit_command = SA5_submit_command,
48927+ .set_intr_mask = SA5_intr_mask,
48928+ .fifo_full = SA5_fifo_full,
48929+ .intr_pending = SA5_intr_pending,
48930+ .command_completed = SA5_completed,
48931 };
48932
48933 static struct access_method SA5_ioaccel_mode1_access = {
48934- SA5_submit_command,
48935- SA5_performant_intr_mask,
48936- SA5_fifo_full,
48937- SA5_ioaccel_mode1_intr_pending,
48938- SA5_ioaccel_mode1_completed,
48939+ .submit_command = SA5_submit_command,
48940+ .set_intr_mask = SA5_performant_intr_mask,
48941+ .fifo_full = SA5_fifo_full,
48942+ .intr_pending = SA5_ioaccel_mode1_intr_pending,
48943+ .command_completed = SA5_ioaccel_mode1_completed,
48944 };
48945
48946 static struct access_method SA5_ioaccel_mode2_access = {
48947- SA5_submit_command_ioaccel2,
48948- SA5_performant_intr_mask,
48949- SA5_fifo_full,
48950- SA5_performant_intr_pending,
48951- SA5_performant_completed,
48952+ .submit_command = SA5_submit_command_ioaccel2,
48953+ .set_intr_mask = SA5_performant_intr_mask,
48954+ .fifo_full = SA5_fifo_full,
48955+ .intr_pending = SA5_performant_intr_pending,
48956+ .command_completed = SA5_performant_completed,
48957 };
48958
48959 static struct access_method SA5_performant_access = {
48960- SA5_submit_command,
48961- SA5_performant_intr_mask,
48962- SA5_fifo_full,
48963- SA5_performant_intr_pending,
48964- SA5_performant_completed,
48965+ .submit_command = SA5_submit_command,
48966+ .set_intr_mask = SA5_performant_intr_mask,
48967+ .fifo_full = SA5_fifo_full,
48968+ .intr_pending = SA5_performant_intr_pending,
48969+ .command_completed = SA5_performant_completed,
48970 };
48971
48972 struct board_type {
48973diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
48974index 1b3a094..068e683 100644
48975--- a/drivers/scsi/libfc/fc_exch.c
48976+++ b/drivers/scsi/libfc/fc_exch.c
48977@@ -101,12 +101,12 @@ struct fc_exch_mgr {
48978 u16 pool_max_index;
48979
48980 struct {
48981- atomic_t no_free_exch;
48982- atomic_t no_free_exch_xid;
48983- atomic_t xid_not_found;
48984- atomic_t xid_busy;
48985- atomic_t seq_not_found;
48986- atomic_t non_bls_resp;
48987+ atomic_unchecked_t no_free_exch;
48988+ atomic_unchecked_t no_free_exch_xid;
48989+ atomic_unchecked_t xid_not_found;
48990+ atomic_unchecked_t xid_busy;
48991+ atomic_unchecked_t seq_not_found;
48992+ atomic_unchecked_t non_bls_resp;
48993 } stats;
48994 };
48995
48996@@ -811,7 +811,7 @@ static struct fc_exch *fc_exch_em_alloc(struct fc_lport *lport,
48997 /* allocate memory for exchange */
48998 ep = mempool_alloc(mp->ep_pool, GFP_ATOMIC);
48999 if (!ep) {
49000- atomic_inc(&mp->stats.no_free_exch);
49001+ atomic_inc_unchecked(&mp->stats.no_free_exch);
49002 goto out;
49003 }
49004 memset(ep, 0, sizeof(*ep));
49005@@ -874,7 +874,7 @@ out:
49006 return ep;
49007 err:
49008 spin_unlock_bh(&pool->lock);
49009- atomic_inc(&mp->stats.no_free_exch_xid);
49010+ atomic_inc_unchecked(&mp->stats.no_free_exch_xid);
49011 mempool_free(ep, mp->ep_pool);
49012 return NULL;
49013 }
49014@@ -1023,7 +1023,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
49015 xid = ntohs(fh->fh_ox_id); /* we originated exch */
49016 ep = fc_exch_find(mp, xid);
49017 if (!ep) {
49018- atomic_inc(&mp->stats.xid_not_found);
49019+ atomic_inc_unchecked(&mp->stats.xid_not_found);
49020 reject = FC_RJT_OX_ID;
49021 goto out;
49022 }
49023@@ -1053,7 +1053,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
49024 ep = fc_exch_find(mp, xid);
49025 if ((f_ctl & FC_FC_FIRST_SEQ) && fc_sof_is_init(fr_sof(fp))) {
49026 if (ep) {
49027- atomic_inc(&mp->stats.xid_busy);
49028+ atomic_inc_unchecked(&mp->stats.xid_busy);
49029 reject = FC_RJT_RX_ID;
49030 goto rel;
49031 }
49032@@ -1064,7 +1064,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
49033 }
49034 xid = ep->xid; /* get our XID */
49035 } else if (!ep) {
49036- atomic_inc(&mp->stats.xid_not_found);
49037+ atomic_inc_unchecked(&mp->stats.xid_not_found);
49038 reject = FC_RJT_RX_ID; /* XID not found */
49039 goto out;
49040 }
49041@@ -1082,7 +1082,7 @@ static enum fc_pf_rjt_reason fc_seq_lookup_recip(struct fc_lport *lport,
49042 } else {
49043 sp = &ep->seq;
49044 if (sp->id != fh->fh_seq_id) {
49045- atomic_inc(&mp->stats.seq_not_found);
49046+ atomic_inc_unchecked(&mp->stats.seq_not_found);
49047 if (f_ctl & FC_FC_END_SEQ) {
49048 /*
49049 * Update sequence_id based on incoming last
49050@@ -1533,22 +1533,22 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
49051
49052 ep = fc_exch_find(mp, ntohs(fh->fh_ox_id));
49053 if (!ep) {
49054- atomic_inc(&mp->stats.xid_not_found);
49055+ atomic_inc_unchecked(&mp->stats.xid_not_found);
49056 goto out;
49057 }
49058 if (ep->esb_stat & ESB_ST_COMPLETE) {
49059- atomic_inc(&mp->stats.xid_not_found);
49060+ atomic_inc_unchecked(&mp->stats.xid_not_found);
49061 goto rel;
49062 }
49063 if (ep->rxid == FC_XID_UNKNOWN)
49064 ep->rxid = ntohs(fh->fh_rx_id);
49065 if (ep->sid != 0 && ep->sid != ntoh24(fh->fh_d_id)) {
49066- atomic_inc(&mp->stats.xid_not_found);
49067+ atomic_inc_unchecked(&mp->stats.xid_not_found);
49068 goto rel;
49069 }
49070 if (ep->did != ntoh24(fh->fh_s_id) &&
49071 ep->did != FC_FID_FLOGI) {
49072- atomic_inc(&mp->stats.xid_not_found);
49073+ atomic_inc_unchecked(&mp->stats.xid_not_found);
49074 goto rel;
49075 }
49076 sof = fr_sof(fp);
49077@@ -1557,7 +1557,7 @@ static void fc_exch_recv_seq_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
49078 sp->ssb_stat |= SSB_ST_RESP;
49079 sp->id = fh->fh_seq_id;
49080 } else if (sp->id != fh->fh_seq_id) {
49081- atomic_inc(&mp->stats.seq_not_found);
49082+ atomic_inc_unchecked(&mp->stats.seq_not_found);
49083 goto rel;
49084 }
49085
49086@@ -1619,9 +1619,9 @@ static void fc_exch_recv_resp(struct fc_exch_mgr *mp, struct fc_frame *fp)
49087 sp = fc_seq_lookup_orig(mp, fp); /* doesn't hold sequence */
49088
49089 if (!sp)
49090- atomic_inc(&mp->stats.xid_not_found);
49091+ atomic_inc_unchecked(&mp->stats.xid_not_found);
49092 else
49093- atomic_inc(&mp->stats.non_bls_resp);
49094+ atomic_inc_unchecked(&mp->stats.non_bls_resp);
49095
49096 fc_frame_free(fp);
49097 }
49098@@ -2261,13 +2261,13 @@ void fc_exch_update_stats(struct fc_lport *lport)
49099
49100 list_for_each_entry(ema, &lport->ema_list, ema_list) {
49101 mp = ema->mp;
49102- st->fc_no_free_exch += atomic_read(&mp->stats.no_free_exch);
49103+ st->fc_no_free_exch += atomic_read_unchecked(&mp->stats.no_free_exch);
49104 st->fc_no_free_exch_xid +=
49105- atomic_read(&mp->stats.no_free_exch_xid);
49106- st->fc_xid_not_found += atomic_read(&mp->stats.xid_not_found);
49107- st->fc_xid_busy += atomic_read(&mp->stats.xid_busy);
49108- st->fc_seq_not_found += atomic_read(&mp->stats.seq_not_found);
49109- st->fc_non_bls_resp += atomic_read(&mp->stats.non_bls_resp);
49110+ atomic_read_unchecked(&mp->stats.no_free_exch_xid);
49111+ st->fc_xid_not_found += atomic_read_unchecked(&mp->stats.xid_not_found);
49112+ st->fc_xid_busy += atomic_read_unchecked(&mp->stats.xid_busy);
49113+ st->fc_seq_not_found += atomic_read_unchecked(&mp->stats.seq_not_found);
49114+ st->fc_non_bls_resp += atomic_read_unchecked(&mp->stats.non_bls_resp);
49115 }
49116 }
49117 EXPORT_SYMBOL(fc_exch_update_stats);
49118diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
49119index 766098a..1c6c971 100644
49120--- a/drivers/scsi/libsas/sas_ata.c
49121+++ b/drivers/scsi/libsas/sas_ata.c
49122@@ -554,7 +554,7 @@ static struct ata_port_operations sas_sata_ops = {
49123 .postreset = ata_std_postreset,
49124 .error_handler = ata_std_error_handler,
49125 .post_internal_cmd = sas_ata_post_internal,
49126- .qc_defer = ata_std_qc_defer,
49127+ .qc_defer = ata_std_qc_defer,
49128 .qc_prep = ata_noop_qc_prep,
49129 .qc_issue = sas_ata_qc_issue,
49130 .qc_fill_rtf = sas_ata_qc_fill_rtf,
49131diff --git a/drivers/scsi/lpfc/lpfc.h b/drivers/scsi/lpfc/lpfc.h
49132index 94a3caf..a118dec 100644
49133--- a/drivers/scsi/lpfc/lpfc.h
49134+++ b/drivers/scsi/lpfc/lpfc.h
49135@@ -430,7 +430,7 @@ struct lpfc_vport {
49136 struct dentry *debug_nodelist;
49137 struct dentry *vport_debugfs_root;
49138 struct lpfc_debugfs_trc *disc_trc;
49139- atomic_t disc_trc_cnt;
49140+ atomic_unchecked_t disc_trc_cnt;
49141 #endif
49142 uint8_t stat_data_enabled;
49143 uint8_t stat_data_blocked;
49144@@ -879,8 +879,8 @@ struct lpfc_hba {
49145 struct timer_list fabric_block_timer;
49146 unsigned long bit_flags;
49147 #define FABRIC_COMANDS_BLOCKED 0
49148- atomic_t num_rsrc_err;
49149- atomic_t num_cmd_success;
49150+ atomic_unchecked_t num_rsrc_err;
49151+ atomic_unchecked_t num_cmd_success;
49152 unsigned long last_rsrc_error_time;
49153 unsigned long last_ramp_down_time;
49154 #ifdef CONFIG_SCSI_LPFC_DEBUG_FS
49155@@ -915,7 +915,7 @@ struct lpfc_hba {
49156
49157 struct dentry *debug_slow_ring_trc;
49158 struct lpfc_debugfs_trc *slow_ring_trc;
49159- atomic_t slow_ring_trc_cnt;
49160+ atomic_unchecked_t slow_ring_trc_cnt;
49161 /* iDiag debugfs sub-directory */
49162 struct dentry *idiag_root;
49163 struct dentry *idiag_pci_cfg;
49164diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
49165index 828c08e..e3378e0 100644
49166--- a/drivers/scsi/lpfc/lpfc_debugfs.c
49167+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
49168@@ -106,7 +106,7 @@ MODULE_PARM_DESC(lpfc_debugfs_mask_disc_trc,
49169
49170 #include <linux/debugfs.h>
49171
49172-static atomic_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
49173+static atomic_unchecked_t lpfc_debugfs_seq_trc_cnt = ATOMIC_INIT(0);
49174 static unsigned long lpfc_debugfs_start_time = 0L;
49175
49176 /* iDiag */
49177@@ -147,7 +147,7 @@ lpfc_debugfs_disc_trc_data(struct lpfc_vport *vport, char *buf, int size)
49178 lpfc_debugfs_enable = 0;
49179
49180 len = 0;
49181- index = (atomic_read(&vport->disc_trc_cnt) + 1) &
49182+ index = (atomic_read_unchecked(&vport->disc_trc_cnt) + 1) &
49183 (lpfc_debugfs_max_disc_trc - 1);
49184 for (i = index; i < lpfc_debugfs_max_disc_trc; i++) {
49185 dtp = vport->disc_trc + i;
49186@@ -213,7 +213,7 @@ lpfc_debugfs_slow_ring_trc_data(struct lpfc_hba *phba, char *buf, int size)
49187 lpfc_debugfs_enable = 0;
49188
49189 len = 0;
49190- index = (atomic_read(&phba->slow_ring_trc_cnt) + 1) &
49191+ index = (atomic_read_unchecked(&phba->slow_ring_trc_cnt) + 1) &
49192 (lpfc_debugfs_max_slow_ring_trc - 1);
49193 for (i = index; i < lpfc_debugfs_max_slow_ring_trc; i++) {
49194 dtp = phba->slow_ring_trc + i;
49195@@ -646,14 +646,14 @@ lpfc_debugfs_disc_trc(struct lpfc_vport *vport, int mask, char *fmt,
49196 !vport || !vport->disc_trc)
49197 return;
49198
49199- index = atomic_inc_return(&vport->disc_trc_cnt) &
49200+ index = atomic_inc_return_unchecked(&vport->disc_trc_cnt) &
49201 (lpfc_debugfs_max_disc_trc - 1);
49202 dtp = vport->disc_trc + index;
49203 dtp->fmt = fmt;
49204 dtp->data1 = data1;
49205 dtp->data2 = data2;
49206 dtp->data3 = data3;
49207- dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
49208+ dtp->seq_cnt = atomic_inc_return_unchecked(&lpfc_debugfs_seq_trc_cnt);
49209 dtp->jif = jiffies;
49210 #endif
49211 return;
49212@@ -684,14 +684,14 @@ lpfc_debugfs_slow_ring_trc(struct lpfc_hba *phba, char *fmt,
49213 !phba || !phba->slow_ring_trc)
49214 return;
49215
49216- index = atomic_inc_return(&phba->slow_ring_trc_cnt) &
49217+ index = atomic_inc_return_unchecked(&phba->slow_ring_trc_cnt) &
49218 (lpfc_debugfs_max_slow_ring_trc - 1);
49219 dtp = phba->slow_ring_trc + index;
49220 dtp->fmt = fmt;
49221 dtp->data1 = data1;
49222 dtp->data2 = data2;
49223 dtp->data3 = data3;
49224- dtp->seq_cnt = atomic_inc_return(&lpfc_debugfs_seq_trc_cnt);
49225+ dtp->seq_cnt = atomic_inc_return_unchecked(&lpfc_debugfs_seq_trc_cnt);
49226 dtp->jif = jiffies;
49227 #endif
49228 return;
49229@@ -4268,7 +4268,7 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
49230 "slow_ring buffer\n");
49231 goto debug_failed;
49232 }
49233- atomic_set(&phba->slow_ring_trc_cnt, 0);
49234+ atomic_set_unchecked(&phba->slow_ring_trc_cnt, 0);
49235 memset(phba->slow_ring_trc, 0,
49236 (sizeof(struct lpfc_debugfs_trc) *
49237 lpfc_debugfs_max_slow_ring_trc));
49238@@ -4314,7 +4314,7 @@ lpfc_debugfs_initialize(struct lpfc_vport *vport)
49239 "buffer\n");
49240 goto debug_failed;
49241 }
49242- atomic_set(&vport->disc_trc_cnt, 0);
49243+ atomic_set_unchecked(&vport->disc_trc_cnt, 0);
49244
49245 snprintf(name, sizeof(name), "discovery_trace");
49246 vport->debug_disc_trc =
49247diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
49248index 635eeb3..038aef6 100644
49249--- a/drivers/scsi/lpfc/lpfc_init.c
49250+++ b/drivers/scsi/lpfc/lpfc_init.c
49251@@ -11194,8 +11194,10 @@ lpfc_init(void)
49252 "misc_register returned with status %d", error);
49253
49254 if (lpfc_enable_npiv) {
49255- lpfc_transport_functions.vport_create = lpfc_vport_create;
49256- lpfc_transport_functions.vport_delete = lpfc_vport_delete;
49257+ pax_open_kernel();
49258+ *(void **)&lpfc_transport_functions.vport_create = lpfc_vport_create;
49259+ *(void **)&lpfc_transport_functions.vport_delete = lpfc_vport_delete;
49260+ pax_close_kernel();
49261 }
49262 lpfc_transport_template =
49263 fc_attach_transport(&lpfc_transport_functions);
49264diff --git a/drivers/scsi/lpfc/lpfc_scsi.c b/drivers/scsi/lpfc/lpfc_scsi.c
49265index 462453e..c0023a6 100644
49266--- a/drivers/scsi/lpfc/lpfc_scsi.c
49267+++ b/drivers/scsi/lpfc/lpfc_scsi.c
49268@@ -382,7 +382,7 @@ lpfc_rampdown_queue_depth(struct lpfc_hba *phba)
49269 uint32_t evt_posted;
49270
49271 spin_lock_irqsave(&phba->hbalock, flags);
49272- atomic_inc(&phba->num_rsrc_err);
49273+ atomic_inc_unchecked(&phba->num_rsrc_err);
49274 phba->last_rsrc_error_time = jiffies;
49275
49276 if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) {
49277@@ -423,8 +423,8 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
49278 unsigned long num_rsrc_err, num_cmd_success;
49279 int i;
49280
49281- num_rsrc_err = atomic_read(&phba->num_rsrc_err);
49282- num_cmd_success = atomic_read(&phba->num_cmd_success);
49283+ num_rsrc_err = atomic_read_unchecked(&phba->num_rsrc_err);
49284+ num_cmd_success = atomic_read_unchecked(&phba->num_cmd_success);
49285
49286 /*
49287 * The error and success command counters are global per
49288@@ -452,8 +452,8 @@ lpfc_ramp_down_queue_handler(struct lpfc_hba *phba)
49289 }
49290 }
49291 lpfc_destroy_vport_work_array(phba, vports);
49292- atomic_set(&phba->num_rsrc_err, 0);
49293- atomic_set(&phba->num_cmd_success, 0);
49294+ atomic_set_unchecked(&phba->num_rsrc_err, 0);
49295+ atomic_set_unchecked(&phba->num_cmd_success, 0);
49296 }
49297
49298 /**
49299diff --git a/drivers/scsi/mpt2sas/mpt2sas_scsih.c b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
49300index 6fd7d40..b444223 100644
49301--- a/drivers/scsi/mpt2sas/mpt2sas_scsih.c
49302+++ b/drivers/scsi/mpt2sas/mpt2sas_scsih.c
49303@@ -1557,7 +1557,7 @@ _scsih_get_resync(struct device *dev)
49304 {
49305 struct scsi_device *sdev = to_scsi_device(dev);
49306 struct MPT2SAS_ADAPTER *ioc = shost_priv(sdev->host);
49307- static struct _raid_device *raid_device;
49308+ struct _raid_device *raid_device;
49309 unsigned long flags;
49310 Mpi2RaidVolPage0_t vol_pg0;
49311 Mpi2ConfigReply_t mpi_reply;
49312@@ -1609,7 +1609,7 @@ _scsih_get_state(struct device *dev)
49313 {
49314 struct scsi_device *sdev = to_scsi_device(dev);
49315 struct MPT2SAS_ADAPTER *ioc = shost_priv(sdev->host);
49316- static struct _raid_device *raid_device;
49317+ struct _raid_device *raid_device;
49318 unsigned long flags;
49319 Mpi2RaidVolPage0_t vol_pg0;
49320 Mpi2ConfigReply_t mpi_reply;
49321@@ -6637,7 +6637,7 @@ _scsih_sas_ir_operation_status_event(struct MPT2SAS_ADAPTER *ioc,
49322 struct fw_event_work *fw_event)
49323 {
49324 Mpi2EventDataIrOperationStatus_t *event_data = fw_event->event_data;
49325- static struct _raid_device *raid_device;
49326+ struct _raid_device *raid_device;
49327 unsigned long flags;
49328 u16 handle;
49329
49330@@ -7108,7 +7108,7 @@ _scsih_scan_for_devices_after_reset(struct MPT2SAS_ADAPTER *ioc)
49331 u64 sas_address;
49332 struct _sas_device *sas_device;
49333 struct _sas_node *expander_device;
49334- static struct _raid_device *raid_device;
49335+ struct _raid_device *raid_device;
49336 u8 retry_count;
49337 unsigned long flags;
49338
49339diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c
49340index be8ce54..94ed33a 100644
49341--- a/drivers/scsi/pmcraid.c
49342+++ b/drivers/scsi/pmcraid.c
49343@@ -200,8 +200,8 @@ static int pmcraid_slave_alloc(struct scsi_device *scsi_dev)
49344 res->scsi_dev = scsi_dev;
49345 scsi_dev->hostdata = res;
49346 res->change_detected = 0;
49347- atomic_set(&res->read_failures, 0);
49348- atomic_set(&res->write_failures, 0);
49349+ atomic_set_unchecked(&res->read_failures, 0);
49350+ atomic_set_unchecked(&res->write_failures, 0);
49351 rc = 0;
49352 }
49353 spin_unlock_irqrestore(&pinstance->resource_lock, lock_flags);
49354@@ -2687,9 +2687,9 @@ static int pmcraid_error_handler(struct pmcraid_cmd *cmd)
49355
49356 /* If this was a SCSI read/write command keep count of errors */
49357 if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_READ_CMD)
49358- atomic_inc(&res->read_failures);
49359+ atomic_inc_unchecked(&res->read_failures);
49360 else if (SCSI_CMD_TYPE(scsi_cmd->cmnd[0]) == SCSI_WRITE_CMD)
49361- atomic_inc(&res->write_failures);
49362+ atomic_inc_unchecked(&res->write_failures);
49363
49364 if (!RES_IS_GSCSI(res->cfg_entry) &&
49365 masked_ioasc != PMCRAID_IOASC_HW_DEVICE_BUS_STATUS_ERROR) {
49366@@ -3545,7 +3545,7 @@ static int pmcraid_queuecommand_lck(
49367 * block of scsi_cmd which is re-used (e.g. cancel/abort), which uses
49368 * hrrq_id assigned here in queuecommand
49369 */
49370- ioarcb->hrrq_id = atomic_add_return(1, &(pinstance->last_message_id)) %
49371+ ioarcb->hrrq_id = atomic_add_return_unchecked(1, &(pinstance->last_message_id)) %
49372 pinstance->num_hrrq;
49373 cmd->cmd_done = pmcraid_io_done;
49374
49375@@ -3857,7 +3857,7 @@ static long pmcraid_ioctl_passthrough(
49376 * block of scsi_cmd which is re-used (e.g. cancel/abort), which uses
49377 * hrrq_id assigned here in queuecommand
49378 */
49379- ioarcb->hrrq_id = atomic_add_return(1, &(pinstance->last_message_id)) %
49380+ ioarcb->hrrq_id = atomic_add_return_unchecked(1, &(pinstance->last_message_id)) %
49381 pinstance->num_hrrq;
49382
49383 if (request_size) {
49384@@ -4495,7 +4495,7 @@ static void pmcraid_worker_function(struct work_struct *workp)
49385
49386 pinstance = container_of(workp, struct pmcraid_instance, worker_q);
49387 /* add resources only after host is added into system */
49388- if (!atomic_read(&pinstance->expose_resources))
49389+ if (!atomic_read_unchecked(&pinstance->expose_resources))
49390 return;
49391
49392 fw_version = be16_to_cpu(pinstance->inq_data->fw_version);
49393@@ -5322,8 +5322,8 @@ static int pmcraid_init_instance(struct pci_dev *pdev, struct Scsi_Host *host,
49394 init_waitqueue_head(&pinstance->reset_wait_q);
49395
49396 atomic_set(&pinstance->outstanding_cmds, 0);
49397- atomic_set(&pinstance->last_message_id, 0);
49398- atomic_set(&pinstance->expose_resources, 0);
49399+ atomic_set_unchecked(&pinstance->last_message_id, 0);
49400+ atomic_set_unchecked(&pinstance->expose_resources, 0);
49401
49402 INIT_LIST_HEAD(&pinstance->free_res_q);
49403 INIT_LIST_HEAD(&pinstance->used_res_q);
49404@@ -6036,7 +6036,7 @@ static int pmcraid_probe(struct pci_dev *pdev,
49405 /* Schedule worker thread to handle CCN and take care of adding and
49406 * removing devices to OS
49407 */
49408- atomic_set(&pinstance->expose_resources, 1);
49409+ atomic_set_unchecked(&pinstance->expose_resources, 1);
49410 schedule_work(&pinstance->worker_q);
49411 return rc;
49412
49413diff --git a/drivers/scsi/pmcraid.h b/drivers/scsi/pmcraid.h
49414index e1d150f..6c6df44 100644
49415--- a/drivers/scsi/pmcraid.h
49416+++ b/drivers/scsi/pmcraid.h
49417@@ -748,7 +748,7 @@ struct pmcraid_instance {
49418 struct pmcraid_isr_param hrrq_vector[PMCRAID_NUM_MSIX_VECTORS];
49419
49420 /* Message id as filled in last fired IOARCB, used to identify HRRQ */
49421- atomic_t last_message_id;
49422+ atomic_unchecked_t last_message_id;
49423
49424 /* configuration table */
49425 struct pmcraid_config_table *cfg_table;
49426@@ -777,7 +777,7 @@ struct pmcraid_instance {
49427 atomic_t outstanding_cmds;
49428
49429 /* should add/delete resources to mid-layer now ?*/
49430- atomic_t expose_resources;
49431+ atomic_unchecked_t expose_resources;
49432
49433
49434
49435@@ -813,8 +813,8 @@ struct pmcraid_resource_entry {
49436 struct pmcraid_config_table_entry_ext cfg_entry_ext;
49437 };
49438 struct scsi_device *scsi_dev; /* Link scsi_device structure */
49439- atomic_t read_failures; /* count of failed READ commands */
49440- atomic_t write_failures; /* count of failed WRITE commands */
49441+ atomic_unchecked_t read_failures; /* count of failed READ commands */
49442+ atomic_unchecked_t write_failures; /* count of failed WRITE commands */
49443
49444 /* To indicate add/delete/modify during CCN */
49445 u8 change_detected;
49446diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
49447index 07befcf..c0bff13 100644
49448--- a/drivers/scsi/qla2xxx/qla_attr.c
49449+++ b/drivers/scsi/qla2xxx/qla_attr.c
49450@@ -2188,7 +2188,7 @@ qla24xx_vport_disable(struct fc_vport *fc_vport, bool disable)
49451 return 0;
49452 }
49453
49454-struct fc_function_template qla2xxx_transport_functions = {
49455+fc_function_template_no_const qla2xxx_transport_functions = {
49456
49457 .show_host_node_name = 1,
49458 .show_host_port_name = 1,
49459@@ -2236,7 +2236,7 @@ struct fc_function_template qla2xxx_transport_functions = {
49460 .bsg_timeout = qla24xx_bsg_timeout,
49461 };
49462
49463-struct fc_function_template qla2xxx_transport_vport_functions = {
49464+fc_function_template_no_const qla2xxx_transport_vport_functions = {
49465
49466 .show_host_node_name = 1,
49467 .show_host_port_name = 1,
49468diff --git a/drivers/scsi/qla2xxx/qla_gbl.h b/drivers/scsi/qla2xxx/qla_gbl.h
49469index e665e81..16e84e6 100644
49470--- a/drivers/scsi/qla2xxx/qla_gbl.h
49471+++ b/drivers/scsi/qla2xxx/qla_gbl.h
49472@@ -557,8 +557,8 @@ extern void qla2x00_get_sym_node_name(scsi_qla_host_t *, uint8_t *);
49473 struct device_attribute;
49474 extern struct device_attribute *qla2x00_host_attrs[];
49475 struct fc_function_template;
49476-extern struct fc_function_template qla2xxx_transport_functions;
49477-extern struct fc_function_template qla2xxx_transport_vport_functions;
49478+extern fc_function_template_no_const qla2xxx_transport_functions;
49479+extern fc_function_template_no_const qla2xxx_transport_vport_functions;
49480 extern void qla2x00_alloc_sysfs_attr(scsi_qla_host_t *);
49481 extern void qla2x00_free_sysfs_attr(scsi_qla_host_t *, bool);
49482 extern void qla2x00_init_host_attr(scsi_qla_host_t *);
49483diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
49484index 19e99cc..b3c0b7b 100644
49485--- a/drivers/scsi/qla2xxx/qla_os.c
49486+++ b/drivers/scsi/qla2xxx/qla_os.c
49487@@ -1493,8 +1493,10 @@ qla2x00_config_dma_addressing(struct qla_hw_data *ha)
49488 !pci_set_consistent_dma_mask(ha->pdev, DMA_BIT_MASK(64))) {
49489 /* Ok, a 64bit DMA mask is applicable. */
49490 ha->flags.enable_64bit_addressing = 1;
49491- ha->isp_ops->calc_req_entries = qla2x00_calc_iocbs_64;
49492- ha->isp_ops->build_iocbs = qla2x00_build_scsi_iocbs_64;
49493+ pax_open_kernel();
49494+ *(void **)&ha->isp_ops->calc_req_entries = qla2x00_calc_iocbs_64;
49495+ *(void **)&ha->isp_ops->build_iocbs = qla2x00_build_scsi_iocbs_64;
49496+ pax_close_kernel();
49497 return;
49498 }
49499 }
49500diff --git a/drivers/scsi/qla4xxx/ql4_def.h b/drivers/scsi/qla4xxx/ql4_def.h
49501index 73a5022..4e0797c 100644
49502--- a/drivers/scsi/qla4xxx/ql4_def.h
49503+++ b/drivers/scsi/qla4xxx/ql4_def.h
49504@@ -305,7 +305,7 @@ struct ddb_entry {
49505 * (4000 only) */
49506 atomic_t relogin_timer; /* Max Time to wait for
49507 * relogin to complete */
49508- atomic_t relogin_retry_count; /* Num of times relogin has been
49509+ atomic_unchecked_t relogin_retry_count; /* Num of times relogin has been
49510 * retried */
49511 uint32_t default_time2wait; /* Default Min time between
49512 * relogins (+aens) */
49513diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
49514index 459b9f7..2930a68 100644
49515--- a/drivers/scsi/qla4xxx/ql4_os.c
49516+++ b/drivers/scsi/qla4xxx/ql4_os.c
49517@@ -4499,12 +4499,12 @@ static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
49518 */
49519 if (!iscsi_is_session_online(cls_sess)) {
49520 /* Reset retry relogin timer */
49521- atomic_inc(&ddb_entry->relogin_retry_count);
49522+ atomic_inc_unchecked(&ddb_entry->relogin_retry_count);
49523 DEBUG2(ql4_printk(KERN_INFO, ha,
49524 "%s: index[%d] relogin timed out-retrying"
49525 " relogin (%d), retry (%d)\n", __func__,
49526 ddb_entry->fw_ddb_index,
49527- atomic_read(&ddb_entry->relogin_retry_count),
49528+ atomic_read_unchecked(&ddb_entry->relogin_retry_count),
49529 ddb_entry->default_time2wait + 4));
49530 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
49531 atomic_set(&ddb_entry->retry_relogin_timer,
49532@@ -6609,7 +6609,7 @@ static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
49533
49534 atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
49535 atomic_set(&ddb_entry->relogin_timer, 0);
49536- atomic_set(&ddb_entry->relogin_retry_count, 0);
49537+ atomic_set_unchecked(&ddb_entry->relogin_retry_count, 0);
49538 def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
49539 ddb_entry->default_relogin_timeout =
49540 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
49541diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
49542index 88d46fe..7351be5 100644
49543--- a/drivers/scsi/scsi.c
49544+++ b/drivers/scsi/scsi.c
49545@@ -640,7 +640,7 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
49546 struct Scsi_Host *host = cmd->device->host;
49547 int rtn = 0;
49548
49549- atomic_inc(&cmd->device->iorequest_cnt);
49550+ atomic_inc_unchecked(&cmd->device->iorequest_cnt);
49551
49552 /* check if the device is still usable */
49553 if (unlikely(cmd->device->sdev_state == SDEV_DEL)) {
49554diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
49555index 9db097a..ca5c291 100644
49556--- a/drivers/scsi/scsi_lib.c
49557+++ b/drivers/scsi/scsi_lib.c
49558@@ -1464,7 +1464,7 @@ static void scsi_kill_request(struct request *req, struct request_queue *q)
49559 shost = sdev->host;
49560 scsi_init_cmd_errh(cmd);
49561 cmd->result = DID_NO_CONNECT << 16;
49562- atomic_inc(&cmd->device->iorequest_cnt);
49563+ atomic_inc_unchecked(&cmd->device->iorequest_cnt);
49564
49565 /*
49566 * SCSI request completion path will do scsi_device_unbusy(),
49567@@ -1490,9 +1490,9 @@ static void scsi_softirq_done(struct request *rq)
49568
49569 INIT_LIST_HEAD(&cmd->eh_entry);
49570
49571- atomic_inc(&cmd->device->iodone_cnt);
49572+ atomic_inc_unchecked(&cmd->device->iodone_cnt);
49573 if (cmd->result)
49574- atomic_inc(&cmd->device->ioerr_cnt);
49575+ atomic_inc_unchecked(&cmd->device->ioerr_cnt);
49576
49577 disposition = scsi_decide_disposition(cmd);
49578 if (disposition != SUCCESS &&
49579diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
49580index 074e8cc..f612e5c 100644
49581--- a/drivers/scsi/scsi_sysfs.c
49582+++ b/drivers/scsi/scsi_sysfs.c
49583@@ -780,7 +780,7 @@ show_iostat_##field(struct device *dev, struct device_attribute *attr, \
49584 char *buf) \
49585 { \
49586 struct scsi_device *sdev = to_scsi_device(dev); \
49587- unsigned long long count = atomic_read(&sdev->field); \
49588+ unsigned long long count = atomic_read_unchecked(&sdev->field); \
49589 return snprintf(buf, 20, "0x%llx\n", count); \
49590 } \
49591 static DEVICE_ATTR(field, S_IRUGO, show_iostat_##field, NULL)
49592diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c
49593index e51add0..1e06a96 100644
49594--- a/drivers/scsi/scsi_tgt_lib.c
49595+++ b/drivers/scsi/scsi_tgt_lib.c
49596@@ -363,7 +363,7 @@ static int scsi_map_user_pages(struct scsi_tgt_cmd *tcmd, struct scsi_cmnd *cmd,
49597 int err;
49598
49599 dprintk("%lx %u\n", uaddr, len);
49600- err = blk_rq_map_user(q, rq, NULL, (void *)uaddr, len, GFP_KERNEL);
49601+ err = blk_rq_map_user(q, rq, NULL, (void __user *)uaddr, len, GFP_KERNEL);
49602 if (err) {
49603 /*
49604 * TODO: need to fixup sg_tablesize, max_segment_size,
49605diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
49606index f80908f..22aba76 100644
49607--- a/drivers/scsi/scsi_transport_fc.c
49608+++ b/drivers/scsi/scsi_transport_fc.c
49609@@ -498,7 +498,7 @@ static DECLARE_TRANSPORT_CLASS(fc_vport_class,
49610 * Netlink Infrastructure
49611 */
49612
49613-static atomic_t fc_event_seq;
49614+static atomic_unchecked_t fc_event_seq;
49615
49616 /**
49617 * fc_get_event_number - Obtain the next sequential FC event number
49618@@ -511,7 +511,7 @@ static atomic_t fc_event_seq;
49619 u32
49620 fc_get_event_number(void)
49621 {
49622- return atomic_add_return(1, &fc_event_seq);
49623+ return atomic_add_return_unchecked(1, &fc_event_seq);
49624 }
49625 EXPORT_SYMBOL(fc_get_event_number);
49626
49627@@ -655,7 +655,7 @@ static __init int fc_transport_init(void)
49628 {
49629 int error;
49630
49631- atomic_set(&fc_event_seq, 0);
49632+ atomic_set_unchecked(&fc_event_seq, 0);
49633
49634 error = transport_class_register(&fc_host_class);
49635 if (error)
49636@@ -845,7 +845,7 @@ static int fc_str_to_dev_loss(const char *buf, unsigned long *val)
49637 char *cp;
49638
49639 *val = simple_strtoul(buf, &cp, 0);
49640- if ((*cp && (*cp != '\n')) || (*val < 0))
49641+ if (*cp && (*cp != '\n'))
49642 return -EINVAL;
49643 /*
49644 * Check for overflow; dev_loss_tmo is u32
49645diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
49646index 0102a2d..cc3f8e9 100644
49647--- a/drivers/scsi/scsi_transport_iscsi.c
49648+++ b/drivers/scsi/scsi_transport_iscsi.c
49649@@ -79,7 +79,7 @@ struct iscsi_internal {
49650 struct transport_container session_cont;
49651 };
49652
49653-static atomic_t iscsi_session_nr; /* sysfs session id for next new session */
49654+static atomic_unchecked_t iscsi_session_nr; /* sysfs session id for next new session */
49655 static struct workqueue_struct *iscsi_eh_timer_workq;
49656
49657 static DEFINE_IDA(iscsi_sess_ida);
49658@@ -2071,7 +2071,7 @@ int iscsi_add_session(struct iscsi_cls_session *session, unsigned int target_id)
49659 int err;
49660
49661 ihost = shost->shost_data;
49662- session->sid = atomic_add_return(1, &iscsi_session_nr);
49663+ session->sid = atomic_add_return_unchecked(1, &iscsi_session_nr);
49664
49665 if (target_id == ISCSI_MAX_TARGET) {
49666 id = ida_simple_get(&iscsi_sess_ida, 0, 0, GFP_KERNEL);
49667@@ -4511,7 +4511,7 @@ static __init int iscsi_transport_init(void)
49668 printk(KERN_INFO "Loading iSCSI transport class v%s.\n",
49669 ISCSI_TRANSPORT_VERSION);
49670
49671- atomic_set(&iscsi_session_nr, 0);
49672+ atomic_set_unchecked(&iscsi_session_nr, 0);
49673
49674 err = class_register(&iscsi_transport_class);
49675 if (err)
49676diff --git a/drivers/scsi/scsi_transport_srp.c b/drivers/scsi/scsi_transport_srp.c
49677index 13e8983..d306a68 100644
49678--- a/drivers/scsi/scsi_transport_srp.c
49679+++ b/drivers/scsi/scsi_transport_srp.c
49680@@ -36,7 +36,7 @@
49681 #include "scsi_transport_srp_internal.h"
49682
49683 struct srp_host_attrs {
49684- atomic_t next_port_id;
49685+ atomic_unchecked_t next_port_id;
49686 };
49687 #define to_srp_host_attrs(host) ((struct srp_host_attrs *)(host)->shost_data)
49688
49689@@ -101,7 +101,7 @@ static int srp_host_setup(struct transport_container *tc, struct device *dev,
49690 struct Scsi_Host *shost = dev_to_shost(dev);
49691 struct srp_host_attrs *srp_host = to_srp_host_attrs(shost);
49692
49693- atomic_set(&srp_host->next_port_id, 0);
49694+ atomic_set_unchecked(&srp_host->next_port_id, 0);
49695 return 0;
49696 }
49697
49698@@ -734,7 +734,7 @@ struct srp_rport *srp_rport_add(struct Scsi_Host *shost,
49699 rport_fast_io_fail_timedout);
49700 INIT_DELAYED_WORK(&rport->dev_loss_work, rport_dev_loss_timedout);
49701
49702- id = atomic_inc_return(&to_srp_host_attrs(shost)->next_port_id);
49703+ id = atomic_inc_return_unchecked(&to_srp_host_attrs(shost)->next_port_id);
49704 dev_set_name(&rport->dev, "port-%d:%d", shost->host_no, id);
49705
49706 transport_setup_device(&rport->dev);
49707diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
49708index efcbcd1..aeaf26e 100644
49709--- a/drivers/scsi/sd.c
49710+++ b/drivers/scsi/sd.c
49711@@ -2968,7 +2968,7 @@ static int sd_probe(struct device *dev)
49712 sdkp->disk = gd;
49713 sdkp->index = index;
49714 atomic_set(&sdkp->openers, 0);
49715- atomic_set(&sdkp->device->ioerr_cnt, 0);
49716+ atomic_set_unchecked(&sdkp->device->ioerr_cnt, 0);
49717
49718 if (!sdp->request_queue->rq_timeout) {
49719 if (sdp->type != TYPE_MOD)
49720diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
49721index df5e961..df6b97f 100644
49722--- a/drivers/scsi/sg.c
49723+++ b/drivers/scsi/sg.c
49724@@ -1102,7 +1102,7 @@ sg_ioctl(struct file *filp, unsigned int cmd_in, unsigned long arg)
49725 sdp->disk->disk_name,
49726 MKDEV(SCSI_GENERIC_MAJOR, sdp->index),
49727 NULL,
49728- (char *)arg);
49729+ (char __user *)arg);
49730 case BLKTRACESTART:
49731 return blk_trace_startstop(sdp->device->request_queue, 1);
49732 case BLKTRACESTOP:
49733diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
49734index 939edf4..3f50423 100644
49735--- a/drivers/spi/spi.c
49736+++ b/drivers/spi/spi.c
49737@@ -2204,7 +2204,7 @@ int spi_bus_unlock(struct spi_master *master)
49738 EXPORT_SYMBOL_GPL(spi_bus_unlock);
49739
49740 /* portable code must never pass more than 32 bytes */
49741-#define SPI_BUFSIZ max(32, SMP_CACHE_BYTES)
49742+#define SPI_BUFSIZ max(32UL, SMP_CACHE_BYTES)
49743
49744 static u8 *buf;
49745
49746diff --git a/drivers/staging/android/timed_output.c b/drivers/staging/android/timed_output.c
49747index 2c61783..4d49e4e 100644
49748--- a/drivers/staging/android/timed_output.c
49749+++ b/drivers/staging/android/timed_output.c
49750@@ -25,7 +25,7 @@
49751 #include "timed_output.h"
49752
49753 static struct class *timed_output_class;
49754-static atomic_t device_count;
49755+static atomic_unchecked_t device_count;
49756
49757 static ssize_t enable_show(struct device *dev, struct device_attribute *attr,
49758 char *buf)
49759@@ -63,7 +63,7 @@ static int create_timed_output_class(void)
49760 timed_output_class = class_create(THIS_MODULE, "timed_output");
49761 if (IS_ERR(timed_output_class))
49762 return PTR_ERR(timed_output_class);
49763- atomic_set(&device_count, 0);
49764+ atomic_set_unchecked(&device_count, 0);
49765 timed_output_class->dev_groups = timed_output_groups;
49766 }
49767
49768@@ -81,7 +81,7 @@ int timed_output_dev_register(struct timed_output_dev *tdev)
49769 if (ret < 0)
49770 return ret;
49771
49772- tdev->index = atomic_inc_return(&device_count);
49773+ tdev->index = atomic_inc_return_unchecked(&device_count);
49774 tdev->dev = device_create(timed_output_class, NULL,
49775 MKDEV(0, tdev->index), NULL, "%s", tdev->name);
49776 if (IS_ERR(tdev->dev))
49777diff --git a/drivers/staging/gdm724x/gdm_tty.c b/drivers/staging/gdm724x/gdm_tty.c
49778index fe47cd3..19a1bd1 100644
49779--- a/drivers/staging/gdm724x/gdm_tty.c
49780+++ b/drivers/staging/gdm724x/gdm_tty.c
49781@@ -44,7 +44,7 @@
49782 #define gdm_tty_send_control(n, r, v, d, l) (\
49783 n->tty_dev->send_control(n->tty_dev->priv_dev, r, v, d, l))
49784
49785-#define GDM_TTY_READY(gdm) (gdm && gdm->tty_dev && gdm->port.count)
49786+#define GDM_TTY_READY(gdm) (gdm && gdm->tty_dev && atomic_read(&gdm->port.count))
49787
49788 static struct tty_driver *gdm_driver[TTY_MAX_COUNT];
49789 static struct gdm *gdm_table[TTY_MAX_COUNT][GDM_TTY_MINOR];
49790diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c
49791index c270c9a..94ddf82 100644
49792--- a/drivers/staging/imx-drm/imx-drm-core.c
49793+++ b/drivers/staging/imx-drm/imx-drm-core.c
49794@@ -362,7 +362,7 @@ int imx_drm_add_crtc(struct drm_device *drm, struct drm_crtc *crtc,
49795 if (imxdrm->pipes >= MAX_CRTC)
49796 return -EINVAL;
49797
49798- if (imxdrm->drm->open_count)
49799+ if (local_read(&imxdrm->drm->open_count))
49800 return -EBUSY;
49801
49802 imx_drm_crtc = kzalloc(sizeof(*imx_drm_crtc), GFP_KERNEL);
49803diff --git a/drivers/staging/lustre/lnet/selftest/brw_test.c b/drivers/staging/lustre/lnet/selftest/brw_test.c
49804index 3f8020c..649fded 100644
49805--- a/drivers/staging/lustre/lnet/selftest/brw_test.c
49806+++ b/drivers/staging/lustre/lnet/selftest/brw_test.c
49807@@ -488,13 +488,11 @@ brw_server_handle(struct srpc_server_rpc *rpc)
49808 return 0;
49809 }
49810
49811-sfw_test_client_ops_t brw_test_client;
49812-void brw_init_test_client(void)
49813-{
49814- brw_test_client.tso_init = brw_client_init;
49815- brw_test_client.tso_fini = brw_client_fini;
49816- brw_test_client.tso_prep_rpc = brw_client_prep_rpc;
49817- brw_test_client.tso_done_rpc = brw_client_done_rpc;
49818+sfw_test_client_ops_t brw_test_client = {
49819+ .tso_init = brw_client_init,
49820+ .tso_fini = brw_client_fini,
49821+ .tso_prep_rpc = brw_client_prep_rpc,
49822+ .tso_done_rpc = brw_client_done_rpc,
49823 };
49824
49825 srpc_service_t brw_test_service;
49826diff --git a/drivers/staging/lustre/lnet/selftest/framework.c b/drivers/staging/lustre/lnet/selftest/framework.c
49827index 050723a..fa6fdf1 100644
49828--- a/drivers/staging/lustre/lnet/selftest/framework.c
49829+++ b/drivers/staging/lustre/lnet/selftest/framework.c
49830@@ -1635,12 +1635,10 @@ static srpc_service_t sfw_services[] =
49831
49832 extern sfw_test_client_ops_t ping_test_client;
49833 extern srpc_service_t ping_test_service;
49834-extern void ping_init_test_client(void);
49835 extern void ping_init_test_service(void);
49836
49837 extern sfw_test_client_ops_t brw_test_client;
49838 extern srpc_service_t brw_test_service;
49839-extern void brw_init_test_client(void);
49840 extern void brw_init_test_service(void);
49841
49842
49843@@ -1684,12 +1682,10 @@ sfw_startup (void)
49844 INIT_LIST_HEAD(&sfw_data.fw_zombie_rpcs);
49845 INIT_LIST_HEAD(&sfw_data.fw_zombie_sessions);
49846
49847- brw_init_test_client();
49848 brw_init_test_service();
49849 rc = sfw_register_test(&brw_test_service, &brw_test_client);
49850 LASSERT (rc == 0);
49851
49852- ping_init_test_client();
49853 ping_init_test_service();
49854 rc = sfw_register_test(&ping_test_service, &ping_test_client);
49855 LASSERT (rc == 0);
49856diff --git a/drivers/staging/lustre/lnet/selftest/ping_test.c b/drivers/staging/lustre/lnet/selftest/ping_test.c
49857index 750cac4..e4d751f 100644
49858--- a/drivers/staging/lustre/lnet/selftest/ping_test.c
49859+++ b/drivers/staging/lustre/lnet/selftest/ping_test.c
49860@@ -211,14 +211,12 @@ ping_server_handle(struct srpc_server_rpc *rpc)
49861 return 0;
49862 }
49863
49864-sfw_test_client_ops_t ping_test_client;
49865-void ping_init_test_client(void)
49866-{
49867- ping_test_client.tso_init = ping_client_init;
49868- ping_test_client.tso_fini = ping_client_fini;
49869- ping_test_client.tso_prep_rpc = ping_client_prep_rpc;
49870- ping_test_client.tso_done_rpc = ping_client_done_rpc;
49871-}
49872+sfw_test_client_ops_t ping_test_client = {
49873+ .tso_init = ping_client_init,
49874+ .tso_fini = ping_client_fini,
49875+ .tso_prep_rpc = ping_client_prep_rpc,
49876+ .tso_done_rpc = ping_client_done_rpc,
49877+};
49878
49879 srpc_service_t ping_test_service;
49880 void ping_init_test_service(void)
49881diff --git a/drivers/staging/lustre/lustre/include/lustre_dlm.h b/drivers/staging/lustre/lustre/include/lustre_dlm.h
49882index 3e25f00..0d59cf5 100644
49883--- a/drivers/staging/lustre/lustre/include/lustre_dlm.h
49884+++ b/drivers/staging/lustre/lustre/include/lustre_dlm.h
49885@@ -1141,7 +1141,7 @@ struct ldlm_callback_suite {
49886 ldlm_completion_callback lcs_completion;
49887 ldlm_blocking_callback lcs_blocking;
49888 ldlm_glimpse_callback lcs_glimpse;
49889-};
49890+} __no_const;
49891
49892 /* ldlm_lockd.c */
49893 int ldlm_del_waiting_lock(struct ldlm_lock *lock);
49894diff --git a/drivers/staging/lustre/lustre/include/obd.h b/drivers/staging/lustre/lustre/include/obd.h
49895index 72cf3fe..4beac19 100644
49896--- a/drivers/staging/lustre/lustre/include/obd.h
49897+++ b/drivers/staging/lustre/lustre/include/obd.h
49898@@ -1427,7 +1427,7 @@ struct md_ops {
49899 * lprocfs_alloc_md_stats() in obdclass/lprocfs_status.c. Also, add a
49900 * wrapper function in include/linux/obd_class.h.
49901 */
49902-};
49903+} __no_const;
49904
49905 struct lsm_operations {
49906 void (*lsm_free)(struct lov_stripe_md *);
49907diff --git a/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c b/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
49908index 986bf38..eab2558f 100644
49909--- a/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
49910+++ b/drivers/staging/lustre/lustre/ldlm/ldlm_flock.c
49911@@ -259,7 +259,7 @@ ldlm_process_flock_lock(struct ldlm_lock *req, __u64 *flags, int first_enq,
49912 int added = (mode == LCK_NL);
49913 int overlaps = 0;
49914 int splitted = 0;
49915- const struct ldlm_callback_suite null_cbs = { NULL };
49916+ const struct ldlm_callback_suite null_cbs = { };
49917
49918 CDEBUG(D_DLMTRACE, "flags %#llx owner "LPU64" pid %u mode %u start "
49919 LPU64" end "LPU64"\n", *flags,
49920diff --git a/drivers/staging/lustre/lustre/libcfs/linux/linux-proc.c b/drivers/staging/lustre/lustre/libcfs/linux/linux-proc.c
49921index e947b91..f408990 100644
49922--- a/drivers/staging/lustre/lustre/libcfs/linux/linux-proc.c
49923+++ b/drivers/staging/lustre/lustre/libcfs/linux/linux-proc.c
49924@@ -217,7 +217,7 @@ DECLARE_PROC_HANDLER(proc_debug_mb)
49925 int LL_PROC_PROTO(proc_console_max_delay_cs)
49926 {
49927 int rc, max_delay_cs;
49928- ctl_table_t dummy = *table;
49929+ ctl_table_no_const dummy = *table;
49930 cfs_duration_t d;
49931
49932 dummy.data = &max_delay_cs;
49933@@ -248,7 +248,7 @@ int LL_PROC_PROTO(proc_console_max_delay_cs)
49934 int LL_PROC_PROTO(proc_console_min_delay_cs)
49935 {
49936 int rc, min_delay_cs;
49937- ctl_table_t dummy = *table;
49938+ ctl_table_no_const dummy = *table;
49939 cfs_duration_t d;
49940
49941 dummy.data = &min_delay_cs;
49942@@ -279,7 +279,7 @@ int LL_PROC_PROTO(proc_console_min_delay_cs)
49943 int LL_PROC_PROTO(proc_console_backoff)
49944 {
49945 int rc, backoff;
49946- ctl_table_t dummy = *table;
49947+ ctl_table_no_const dummy = *table;
49948
49949 dummy.data = &backoff;
49950 dummy.proc_handler = &proc_dointvec;
49951diff --git a/drivers/staging/lustre/lustre/libcfs/module.c b/drivers/staging/lustre/lustre/libcfs/module.c
49952index 24ae26d..9d09cab 100644
49953--- a/drivers/staging/lustre/lustre/libcfs/module.c
49954+++ b/drivers/staging/lustre/lustre/libcfs/module.c
49955@@ -313,11 +313,11 @@ out:
49956
49957
49958 struct cfs_psdev_ops libcfs_psdev_ops = {
49959- libcfs_psdev_open,
49960- libcfs_psdev_release,
49961- NULL,
49962- NULL,
49963- libcfs_ioctl
49964+ .p_open = libcfs_psdev_open,
49965+ .p_close = libcfs_psdev_release,
49966+ .p_read = NULL,
49967+ .p_write = NULL,
49968+ .p_ioctl = libcfs_ioctl
49969 };
49970
49971 extern int insert_proc(void);
49972diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c
49973index 7fbc18e..f982071 100644
49974--- a/drivers/staging/lustre/lustre/llite/dir.c
49975+++ b/drivers/staging/lustre/lustre/llite/dir.c
49976@@ -660,7 +660,7 @@ int ll_dir_setdirstripe(struct inode *dir, struct lmv_user_md *lump,
49977 int mode;
49978 int err;
49979
49980- mode = (0755 & (S_IRWXUGO|S_ISVTX) & ~current->fs->umask) | S_IFDIR;
49981+ mode = (0755 & (S_IRWXUGO|S_ISVTX) & ~current_umask()) | S_IFDIR;
49982 op_data = ll_prep_md_op_data(NULL, dir, NULL, filename,
49983 strlen(filename), mode, LUSTRE_OPC_MKDIR,
49984 lump);
49985diff --git a/drivers/staging/media/solo6x10/solo6x10-core.c b/drivers/staging/media/solo6x10/solo6x10-core.c
49986index f670469..03b7438 100644
49987--- a/drivers/staging/media/solo6x10/solo6x10-core.c
49988+++ b/drivers/staging/media/solo6x10/solo6x10-core.c
49989@@ -434,7 +434,7 @@ static void solo_device_release(struct device *dev)
49990
49991 static int solo_sysfs_init(struct solo_dev *solo_dev)
49992 {
49993- struct bin_attribute *sdram_attr = &solo_dev->sdram_attr;
49994+ bin_attribute_no_const *sdram_attr = &solo_dev->sdram_attr;
49995 struct device *dev = &solo_dev->dev;
49996 const char *driver;
49997 int i;
49998diff --git a/drivers/staging/media/solo6x10/solo6x10-g723.c b/drivers/staging/media/solo6x10/solo6x10-g723.c
49999index 74f037b..5b5bb76 100644
50000--- a/drivers/staging/media/solo6x10/solo6x10-g723.c
50001+++ b/drivers/staging/media/solo6x10/solo6x10-g723.c
50002@@ -355,7 +355,7 @@ static int solo_snd_pcm_init(struct solo_dev *solo_dev)
50003
50004 int solo_g723_init(struct solo_dev *solo_dev)
50005 {
50006- static struct snd_device_ops ops = { NULL };
50007+ static struct snd_device_ops ops = { };
50008 struct snd_card *card;
50009 struct snd_kcontrol_new kctl;
50010 char name[32];
50011diff --git a/drivers/staging/media/solo6x10/solo6x10-p2m.c b/drivers/staging/media/solo6x10/solo6x10-p2m.c
50012index 7f2f247..d999137 100644
50013--- a/drivers/staging/media/solo6x10/solo6x10-p2m.c
50014+++ b/drivers/staging/media/solo6x10/solo6x10-p2m.c
50015@@ -77,7 +77,7 @@ int solo_p2m_dma_desc(struct solo_dev *solo_dev,
50016
50017 /* Get next ID. According to Softlogic, 6110 has problems on !=0 P2M */
50018 if (solo_dev->type != SOLO_DEV_6110 && multi_p2m) {
50019- p2m_id = atomic_inc_return(&solo_dev->p2m_count) % SOLO_NR_P2M;
50020+ p2m_id = atomic_inc_return_unchecked(&solo_dev->p2m_count) % SOLO_NR_P2M;
50021 if (p2m_id < 0)
50022 p2m_id = -p2m_id;
50023 }
50024diff --git a/drivers/staging/media/solo6x10/solo6x10.h b/drivers/staging/media/solo6x10/solo6x10.h
50025index 8964f8b..36eb087 100644
50026--- a/drivers/staging/media/solo6x10/solo6x10.h
50027+++ b/drivers/staging/media/solo6x10/solo6x10.h
50028@@ -237,7 +237,7 @@ struct solo_dev {
50029
50030 /* P2M DMA Engine */
50031 struct solo_p2m_dev p2m_dev[SOLO_NR_P2M];
50032- atomic_t p2m_count;
50033+ atomic_unchecked_t p2m_count;
50034 int p2m_jiffies;
50035 unsigned int p2m_timeouts;
50036
50037diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c
50038index a0f4868..139f1fb 100644
50039--- a/drivers/staging/octeon/ethernet-rx.c
50040+++ b/drivers/staging/octeon/ethernet-rx.c
50041@@ -417,11 +417,11 @@ static int cvm_oct_napi_poll(struct napi_struct *napi, int budget)
50042 /* Increment RX stats for virtual ports */
50043 if (work->ipprt >= CVMX_PIP_NUM_INPUT_PORTS) {
50044 #ifdef CONFIG_64BIT
50045- atomic64_add(1, (atomic64_t *)&priv->stats.rx_packets);
50046- atomic64_add(skb->len, (atomic64_t *)&priv->stats.rx_bytes);
50047+ atomic64_add_unchecked(1, (atomic64_unchecked_t *)&priv->stats.rx_packets);
50048+ atomic64_add_unchecked(skb->len, (atomic64_unchecked_t *)&priv->stats.rx_bytes);
50049 #else
50050- atomic_add(1, (atomic_t *)&priv->stats.rx_packets);
50051- atomic_add(skb->len, (atomic_t *)&priv->stats.rx_bytes);
50052+ atomic_add_unchecked(1, (atomic_unchecked_t *)&priv->stats.rx_packets);
50053+ atomic_add_unchecked(skb->len, (atomic_unchecked_t *)&priv->stats.rx_bytes);
50054 #endif
50055 }
50056 netif_receive_skb(skb);
50057@@ -432,9 +432,9 @@ static int cvm_oct_napi_poll(struct napi_struct *napi, int budget)
50058 dev->name);
50059 */
50060 #ifdef CONFIG_64BIT
50061- atomic64_add(1, (atomic64_t *)&priv->stats.rx_dropped);
50062+ atomic64_add_unchecked(1, (atomic64_unchecked_t *)&priv->stats.rx_dropped);
50063 #else
50064- atomic_add(1, (atomic_t *)&priv->stats.rx_dropped);
50065+ atomic_add_unchecked(1, (atomic_unchecked_t *)&priv->stats.rx_dropped);
50066 #endif
50067 dev_kfree_skb_irq(skb);
50068 }
50069diff --git a/drivers/staging/octeon/ethernet.c b/drivers/staging/octeon/ethernet.c
50070index ff7214a..6dd90f0 100644
50071--- a/drivers/staging/octeon/ethernet.c
50072+++ b/drivers/staging/octeon/ethernet.c
50073@@ -247,11 +247,11 @@ static struct net_device_stats *cvm_oct_common_get_stats(struct net_device *dev)
50074 * since the RX tasklet also increments it.
50075 */
50076 #ifdef CONFIG_64BIT
50077- atomic64_add(rx_status.dropped_packets,
50078- (atomic64_t *)&priv->stats.rx_dropped);
50079+ atomic64_add_unchecked(rx_status.dropped_packets,
50080+ (atomic64_unchecked_t *)&priv->stats.rx_dropped);
50081 #else
50082- atomic_add(rx_status.dropped_packets,
50083- (atomic_t *)&priv->stats.rx_dropped);
50084+ atomic_add_unchecked(rx_status.dropped_packets,
50085+ (atomic_unchecked_t *)&priv->stats.rx_dropped);
50086 #endif
50087 }
50088
50089diff --git a/drivers/staging/rtl8188eu/include/hal_intf.h b/drivers/staging/rtl8188eu/include/hal_intf.h
50090index c274b34..f84de76 100644
50091--- a/drivers/staging/rtl8188eu/include/hal_intf.h
50092+++ b/drivers/staging/rtl8188eu/include/hal_intf.h
50093@@ -271,7 +271,7 @@ struct hal_ops {
50094 s32 (*c2h_handler)(struct adapter *padapter,
50095 struct c2h_evt_hdr *c2h_evt);
50096 c2h_id_filter c2h_id_filter_ccx;
50097-};
50098+} __no_const;
50099
50100 enum rt_eeprom_type {
50101 EEPROM_93C46,
50102diff --git a/drivers/staging/rtl8188eu/include/rtw_io.h b/drivers/staging/rtl8188eu/include/rtw_io.h
50103index e8790f8..b4a5980 100644
50104--- a/drivers/staging/rtl8188eu/include/rtw_io.h
50105+++ b/drivers/staging/rtl8188eu/include/rtw_io.h
50106@@ -124,7 +124,7 @@ struct _io_ops {
50107 u32 (*_write_scsi)(struct intf_hdl *pintfhdl, u32 cnt, u8 *pmem);
50108 void (*_read_port_cancel)(struct intf_hdl *pintfhdl);
50109 void (*_write_port_cancel)(struct intf_hdl *pintfhdl);
50110-};
50111+} __no_const;
50112
50113 struct io_req {
50114 struct list_head list;
50115diff --git a/drivers/staging/rtl8712/rtl871x_io.h b/drivers/staging/rtl8712/rtl871x_io.h
50116index dc23395..cf7e9b1 100644
50117--- a/drivers/staging/rtl8712/rtl871x_io.h
50118+++ b/drivers/staging/rtl8712/rtl871x_io.h
50119@@ -108,7 +108,7 @@ struct _io_ops {
50120 u8 *pmem);
50121 u32 (*_write_port)(struct intf_hdl *pintfhdl, u32 addr, u32 cnt,
50122 u8 *pmem);
50123-};
50124+} __no_const;
50125
50126 struct io_req {
50127 struct list_head list;
50128diff --git a/drivers/staging/rtl8723au/include/hal_intf.h b/drivers/staging/rtl8723au/include/hal_intf.h
50129index d183f4b..3f4903d 100644
50130--- a/drivers/staging/rtl8723au/include/hal_intf.h
50131+++ b/drivers/staging/rtl8723au/include/hal_intf.h
50132@@ -251,7 +251,7 @@ struct hal_ops {
50133 void (*hal_reset_security_engine)(struct rtw_adapter *adapter);
50134 s32 (*c2h_handler)(struct rtw_adapter *padapter, struct c2h_evt_hdr *c2h_evt);
50135 c2h_id_filter c2h_id_filter_ccx;
50136-};
50137+} __no_const;
50138
50139 enum rt_eeprom_type {
50140 EEPROM_93C46,
50141diff --git a/drivers/staging/rtl8723au/include/rtw_io.h b/drivers/staging/rtl8723au/include/rtw_io.h
50142index 8d39d800..3f21c0c 100644
50143--- a/drivers/staging/rtl8723au/include/rtw_io.h
50144+++ b/drivers/staging/rtl8723au/include/rtw_io.h
50145@@ -130,7 +130,7 @@ struct _io_ops
50146 void (*_read_port_cancel)(struct intf_hdl *pintfhdl);
50147 void (*_write_port_cancel)(struct intf_hdl *pintfhdl);
50148
50149-};
50150+} __no_const;
50151
50152 struct io_req {
50153 struct list_head list;
50154diff --git a/drivers/staging/sbe-2t3e3/netdev.c b/drivers/staging/sbe-2t3e3/netdev.c
50155index fe6c951..72935ba 100644
50156--- a/drivers/staging/sbe-2t3e3/netdev.c
50157+++ b/drivers/staging/sbe-2t3e3/netdev.c
50158@@ -51,7 +51,7 @@ static int t3e3_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
50159 t3e3_if_config(sc, cmd_2t3e3, (char *)&param, &resp, &rlen);
50160
50161 if (rlen)
50162- if (copy_to_user(data, &resp, rlen))
50163+ if (rlen > sizeof resp || copy_to_user(data, &resp, rlen))
50164 return -EFAULT;
50165
50166 return 0;
50167diff --git a/drivers/staging/usbip/vhci.h b/drivers/staging/usbip/vhci.h
50168index a863a98..d272795 100644
50169--- a/drivers/staging/usbip/vhci.h
50170+++ b/drivers/staging/usbip/vhci.h
50171@@ -83,7 +83,7 @@ struct vhci_hcd {
50172 unsigned resuming:1;
50173 unsigned long re_timeout;
50174
50175- atomic_t seqnum;
50176+ atomic_unchecked_t seqnum;
50177
50178 /*
50179 * NOTE:
50180diff --git a/drivers/staging/usbip/vhci_hcd.c b/drivers/staging/usbip/vhci_hcd.c
50181index 70e1755..de41855 100644
50182--- a/drivers/staging/usbip/vhci_hcd.c
50183+++ b/drivers/staging/usbip/vhci_hcd.c
50184@@ -439,7 +439,7 @@ static void vhci_tx_urb(struct urb *urb)
50185
50186 spin_lock(&vdev->priv_lock);
50187
50188- priv->seqnum = atomic_inc_return(&the_controller->seqnum);
50189+ priv->seqnum = atomic_inc_return_unchecked(&the_controller->seqnum);
50190 if (priv->seqnum == 0xffff)
50191 dev_info(&urb->dev->dev, "seqnum max\n");
50192
50193@@ -685,7 +685,7 @@ static int vhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status)
50194 return -ENOMEM;
50195 }
50196
50197- unlink->seqnum = atomic_inc_return(&the_controller->seqnum);
50198+ unlink->seqnum = atomic_inc_return_unchecked(&the_controller->seqnum);
50199 if (unlink->seqnum == 0xffff)
50200 pr_info("seqnum max\n");
50201
50202@@ -889,7 +889,7 @@ static int vhci_start(struct usb_hcd *hcd)
50203 vdev->rhport = rhport;
50204 }
50205
50206- atomic_set(&vhci->seqnum, 0);
50207+ atomic_set_unchecked(&vhci->seqnum, 0);
50208 spin_lock_init(&vhci->lock);
50209
50210 hcd->power_budget = 0; /* no limit */
50211diff --git a/drivers/staging/usbip/vhci_rx.c b/drivers/staging/usbip/vhci_rx.c
50212index d07fcb5..358e1e1 100644
50213--- a/drivers/staging/usbip/vhci_rx.c
50214+++ b/drivers/staging/usbip/vhci_rx.c
50215@@ -80,7 +80,7 @@ static void vhci_recv_ret_submit(struct vhci_device *vdev,
50216 if (!urb) {
50217 pr_err("cannot find a urb of seqnum %u\n", pdu->base.seqnum);
50218 pr_info("max seqnum %d\n",
50219- atomic_read(&the_controller->seqnum));
50220+ atomic_read_unchecked(&the_controller->seqnum));
50221 usbip_event_add(ud, VDEV_EVENT_ERROR_TCP);
50222 return;
50223 }
50224diff --git a/drivers/staging/vt6655/hostap.c b/drivers/staging/vt6655/hostap.c
50225index 6eecd53..29317c6 100644
50226--- a/drivers/staging/vt6655/hostap.c
50227+++ b/drivers/staging/vt6655/hostap.c
50228@@ -69,14 +69,13 @@ static int msglevel = MSG_LEVEL_INFO;
50229 *
50230 */
50231
50232+static net_device_ops_no_const apdev_netdev_ops;
50233+
50234 static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked)
50235 {
50236 PSDevice apdev_priv;
50237 struct net_device *dev = pDevice->dev;
50238 int ret;
50239- const struct net_device_ops apdev_netdev_ops = {
50240- .ndo_start_xmit = pDevice->tx_80211,
50241- };
50242
50243 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: Enabling hostapd mode\n", dev->name);
50244
50245@@ -88,6 +87,8 @@ static int hostap_enable_hostapd(PSDevice pDevice, int rtnl_locked)
50246 *apdev_priv = *pDevice;
50247 eth_hw_addr_inherit(pDevice->apdev, dev);
50248
50249+ /* only half broken now */
50250+ apdev_netdev_ops.ndo_start_xmit = pDevice->tx_80211;
50251 pDevice->apdev->netdev_ops = &apdev_netdev_ops;
50252
50253 pDevice->apdev->type = ARPHRD_IEEE80211;
50254diff --git a/drivers/staging/vt6656/hostap.c b/drivers/staging/vt6656/hostap.c
50255index 67ba48b..24e602f 100644
50256--- a/drivers/staging/vt6656/hostap.c
50257+++ b/drivers/staging/vt6656/hostap.c
50258@@ -60,14 +60,13 @@ static int msglevel =MSG_LEVEL_INFO;
50259 *
50260 */
50261
50262+static net_device_ops_no_const apdev_netdev_ops;
50263+
50264 static int hostap_enable_hostapd(struct vnt_private *pDevice, int rtnl_locked)
50265 {
50266 struct vnt_private *apdev_priv;
50267 struct net_device *dev = pDevice->dev;
50268 int ret;
50269- const struct net_device_ops apdev_netdev_ops = {
50270- .ndo_start_xmit = pDevice->tx_80211,
50271- };
50272
50273 DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: Enabling hostapd mode\n", dev->name);
50274
50275@@ -79,6 +78,8 @@ static int hostap_enable_hostapd(struct vnt_private *pDevice, int rtnl_locked)
50276 *apdev_priv = *pDevice;
50277 memcpy(pDevice->apdev->dev_addr, dev->dev_addr, ETH_ALEN);
50278
50279+ /* only half broken now */
50280+ apdev_netdev_ops.ndo_start_xmit = pDevice->tx_80211;
50281 pDevice->apdev->netdev_ops = &apdev_netdev_ops;
50282
50283 pDevice->apdev->type = ARPHRD_IEEE80211;
50284diff --git a/drivers/target/sbp/sbp_target.c b/drivers/target/sbp/sbp_target.c
50285index e7e9372..161f530 100644
50286--- a/drivers/target/sbp/sbp_target.c
50287+++ b/drivers/target/sbp/sbp_target.c
50288@@ -62,7 +62,7 @@ static const u32 sbp_unit_directory_template[] = {
50289
50290 #define SESSION_MAINTENANCE_INTERVAL HZ
50291
50292-static atomic_t login_id = ATOMIC_INIT(0);
50293+static atomic_unchecked_t login_id = ATOMIC_INIT(0);
50294
50295 static void session_maintenance_work(struct work_struct *);
50296 static int sbp_run_transaction(struct fw_card *, int, int, int, int,
50297@@ -444,7 +444,7 @@ static void sbp_management_request_login(
50298 login->lun = se_lun;
50299 login->status_fifo_addr = sbp2_pointer_to_addr(&req->orb.status_fifo);
50300 login->exclusive = LOGIN_ORB_EXCLUSIVE(be32_to_cpu(req->orb.misc));
50301- login->login_id = atomic_inc_return(&login_id);
50302+ login->login_id = atomic_inc_return_unchecked(&login_id);
50303
50304 login->tgt_agt = sbp_target_agent_register(login);
50305 if (IS_ERR(login->tgt_agt)) {
50306diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c
50307index 6ea95d2..88607b4 100644
50308--- a/drivers/target/target_core_device.c
50309+++ b/drivers/target/target_core_device.c
50310@@ -1525,7 +1525,7 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name)
50311 spin_lock_init(&dev->se_tmr_lock);
50312 spin_lock_init(&dev->qf_cmd_lock);
50313 sema_init(&dev->caw_sem, 1);
50314- atomic_set(&dev->dev_ordered_id, 0);
50315+ atomic_set_unchecked(&dev->dev_ordered_id, 0);
50316 INIT_LIST_HEAD(&dev->t10_wwn.t10_vpd_list);
50317 spin_lock_init(&dev->t10_wwn.t10_vpd_lock);
50318 INIT_LIST_HEAD(&dev->t10_pr.registration_list);
50319diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c
50320index 14772e9..42d9f63 100644
50321--- a/drivers/target/target_core_transport.c
50322+++ b/drivers/target/target_core_transport.c
50323@@ -1165,7 +1165,7 @@ transport_check_alloc_task_attr(struct se_cmd *cmd)
50324 * Used to determine when ORDERED commands should go from
50325 * Dormant to Active status.
50326 */
50327- cmd->se_ordered_id = atomic_inc_return(&dev->dev_ordered_id);
50328+ cmd->se_ordered_id = atomic_inc_return_unchecked(&dev->dev_ordered_id);
50329 smp_mb__after_atomic_inc();
50330 pr_debug("Allocated se_ordered_id: %u for Task Attr: 0x%02x on %s\n",
50331 cmd->se_ordered_id, cmd->sam_task_attr,
50332diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
50333index 04b1be7..5eff86d 100644
50334--- a/drivers/thermal/of-thermal.c
50335+++ b/drivers/thermal/of-thermal.c
50336@@ -30,6 +30,7 @@
50337 #include <linux/err.h>
50338 #include <linux/export.h>
50339 #include <linux/string.h>
50340+#include <linux/mm.h>
50341
50342 #include "thermal_core.h"
50343
50344@@ -341,8 +342,10 @@ thermal_zone_of_add_sensor(struct device_node *zone,
50345 tz->get_trend = get_trend;
50346 tz->sensor_data = data;
50347
50348- tzd->ops->get_temp = of_thermal_get_temp;
50349- tzd->ops->get_trend = of_thermal_get_trend;
50350+ pax_open_kernel();
50351+ *(void **)&tzd->ops->get_temp = of_thermal_get_temp;
50352+ *(void **)&tzd->ops->get_trend = of_thermal_get_trend;
50353+ pax_close_kernel();
50354 mutex_unlock(&tzd->lock);
50355
50356 return tzd;
50357@@ -461,8 +464,10 @@ void thermal_zone_of_sensor_unregister(struct device *dev,
50358 return;
50359
50360 mutex_lock(&tzd->lock);
50361- tzd->ops->get_temp = NULL;
50362- tzd->ops->get_trend = NULL;
50363+ pax_open_kernel();
50364+ *(void **)&tzd->ops->get_temp = NULL;
50365+ *(void **)&tzd->ops->get_trend = NULL;
50366+ pax_close_kernel();
50367
50368 tz->get_temp = NULL;
50369 tz->get_trend = NULL;
50370diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
50371index a57bb5a..1f727d33 100644
50372--- a/drivers/tty/cyclades.c
50373+++ b/drivers/tty/cyclades.c
50374@@ -1570,10 +1570,10 @@ static int cy_open(struct tty_struct *tty, struct file *filp)
50375 printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line,
50376 info->port.count);
50377 #endif
50378- info->port.count++;
50379+ atomic_inc(&info->port.count);
50380 #ifdef CY_DEBUG_COUNT
50381 printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n",
50382- current->pid, info->port.count);
50383+ current->pid, atomic_read(&info->port.count));
50384 #endif
50385
50386 /*
50387@@ -3974,7 +3974,7 @@ static int cyclades_proc_show(struct seq_file *m, void *v)
50388 for (j = 0; j < cy_card[i].nports; j++) {
50389 info = &cy_card[i].ports[j];
50390
50391- if (info->port.count) {
50392+ if (atomic_read(&info->port.count)) {
50393 /* XXX is the ldisc num worth this? */
50394 struct tty_struct *tty;
50395 struct tty_ldisc *ld;
50396diff --git a/drivers/tty/hvc/hvc_console.c b/drivers/tty/hvc/hvc_console.c
50397index 0ff7fda..dbc7d52 100644
50398--- a/drivers/tty/hvc/hvc_console.c
50399+++ b/drivers/tty/hvc/hvc_console.c
50400@@ -342,7 +342,7 @@ static int hvc_open(struct tty_struct *tty, struct file * filp)
50401
50402 spin_lock_irqsave(&hp->port.lock, flags);
50403 /* Check and then increment for fast path open. */
50404- if (hp->port.count++ > 0) {
50405+ if (atomic_inc_return(&hp->port.count) > 1) {
50406 spin_unlock_irqrestore(&hp->port.lock, flags);
50407 hvc_kick();
50408 return 0;
50409@@ -397,7 +397,7 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
50410
50411 spin_lock_irqsave(&hp->port.lock, flags);
50412
50413- if (--hp->port.count == 0) {
50414+ if (atomic_dec_return(&hp->port.count) == 0) {
50415 spin_unlock_irqrestore(&hp->port.lock, flags);
50416 /* We are done with the tty pointer now. */
50417 tty_port_tty_set(&hp->port, NULL);
50418@@ -419,9 +419,9 @@ static void hvc_close(struct tty_struct *tty, struct file * filp)
50419 */
50420 tty_wait_until_sent_from_close(tty, HVC_CLOSE_WAIT);
50421 } else {
50422- if (hp->port.count < 0)
50423+ if (atomic_read(&hp->port.count) < 0)
50424 printk(KERN_ERR "hvc_close %X: oops, count is %d\n",
50425- hp->vtermno, hp->port.count);
50426+ hp->vtermno, atomic_read(&hp->port.count));
50427 spin_unlock_irqrestore(&hp->port.lock, flags);
50428 }
50429 }
50430@@ -451,12 +451,12 @@ static void hvc_hangup(struct tty_struct *tty)
50431 * open->hangup case this can be called after the final close so prevent
50432 * that from happening for now.
50433 */
50434- if (hp->port.count <= 0) {
50435+ if (atomic_read(&hp->port.count) <= 0) {
50436 spin_unlock_irqrestore(&hp->port.lock, flags);
50437 return;
50438 }
50439
50440- hp->port.count = 0;
50441+ atomic_set(&hp->port.count, 0);
50442 spin_unlock_irqrestore(&hp->port.lock, flags);
50443 tty_port_tty_set(&hp->port, NULL);
50444
50445@@ -504,7 +504,7 @@ static int hvc_write(struct tty_struct *tty, const unsigned char *buf, int count
50446 return -EPIPE;
50447
50448 /* FIXME what's this (unprotected) check for? */
50449- if (hp->port.count <= 0)
50450+ if (atomic_read(&hp->port.count) <= 0)
50451 return -EIO;
50452
50453 spin_lock_irqsave(&hp->lock, flags);
50454diff --git a/drivers/tty/hvc/hvcs.c b/drivers/tty/hvc/hvcs.c
50455index 81e939e..95ead10 100644
50456--- a/drivers/tty/hvc/hvcs.c
50457+++ b/drivers/tty/hvc/hvcs.c
50458@@ -83,6 +83,7 @@
50459 #include <asm/hvcserver.h>
50460 #include <asm/uaccess.h>
50461 #include <asm/vio.h>
50462+#include <asm/local.h>
50463
50464 /*
50465 * 1.3.0 -> 1.3.1 In hvcs_open memset(..,0x00,..) instead of memset(..,0x3F,00).
50466@@ -416,7 +417,7 @@ static ssize_t hvcs_vterm_state_store(struct device *dev, struct device_attribut
50467
50468 spin_lock_irqsave(&hvcsd->lock, flags);
50469
50470- if (hvcsd->port.count > 0) {
50471+ if (atomic_read(&hvcsd->port.count) > 0) {
50472 spin_unlock_irqrestore(&hvcsd->lock, flags);
50473 printk(KERN_INFO "HVCS: vterm state unchanged. "
50474 "The hvcs device node is still in use.\n");
50475@@ -1127,7 +1128,7 @@ static int hvcs_install(struct tty_driver *driver, struct tty_struct *tty)
50476 }
50477 }
50478
50479- hvcsd->port.count = 0;
50480+ atomic_set(&hvcsd->port.count, 0);
50481 hvcsd->port.tty = tty;
50482 tty->driver_data = hvcsd;
50483
50484@@ -1180,7 +1181,7 @@ static int hvcs_open(struct tty_struct *tty, struct file *filp)
50485 unsigned long flags;
50486
50487 spin_lock_irqsave(&hvcsd->lock, flags);
50488- hvcsd->port.count++;
50489+ atomic_inc(&hvcsd->port.count);
50490 hvcsd->todo_mask |= HVCS_SCHED_READ;
50491 spin_unlock_irqrestore(&hvcsd->lock, flags);
50492
50493@@ -1216,7 +1217,7 @@ static void hvcs_close(struct tty_struct *tty, struct file *filp)
50494 hvcsd = tty->driver_data;
50495
50496 spin_lock_irqsave(&hvcsd->lock, flags);
50497- if (--hvcsd->port.count == 0) {
50498+ if (atomic_dec_and_test(&hvcsd->port.count)) {
50499
50500 vio_disable_interrupts(hvcsd->vdev);
50501
50502@@ -1241,10 +1242,10 @@ static void hvcs_close(struct tty_struct *tty, struct file *filp)
50503
50504 free_irq(irq, hvcsd);
50505 return;
50506- } else if (hvcsd->port.count < 0) {
50507+ } else if (atomic_read(&hvcsd->port.count) < 0) {
50508 printk(KERN_ERR "HVCS: vty-server@%X open_count: %d"
50509 " is missmanaged.\n",
50510- hvcsd->vdev->unit_address, hvcsd->port.count);
50511+ hvcsd->vdev->unit_address, atomic_read(&hvcsd->port.count));
50512 }
50513
50514 spin_unlock_irqrestore(&hvcsd->lock, flags);
50515@@ -1266,7 +1267,7 @@ static void hvcs_hangup(struct tty_struct * tty)
50516
50517 spin_lock_irqsave(&hvcsd->lock, flags);
50518 /* Preserve this so that we know how many kref refs to put */
50519- temp_open_count = hvcsd->port.count;
50520+ temp_open_count = atomic_read(&hvcsd->port.count);
50521
50522 /*
50523 * Don't kref put inside the spinlock because the destruction
50524@@ -1281,7 +1282,7 @@ static void hvcs_hangup(struct tty_struct * tty)
50525 tty->driver_data = NULL;
50526 hvcsd->port.tty = NULL;
50527
50528- hvcsd->port.count = 0;
50529+ atomic_set(&hvcsd->port.count, 0);
50530
50531 /* This will drop any buffered data on the floor which is OK in a hangup
50532 * scenario. */
50533@@ -1352,7 +1353,7 @@ static int hvcs_write(struct tty_struct *tty,
50534 * the middle of a write operation? This is a crummy place to do this
50535 * but we want to keep it all in the spinlock.
50536 */
50537- if (hvcsd->port.count <= 0) {
50538+ if (atomic_read(&hvcsd->port.count) <= 0) {
50539 spin_unlock_irqrestore(&hvcsd->lock, flags);
50540 return -ENODEV;
50541 }
50542@@ -1426,7 +1427,7 @@ static int hvcs_write_room(struct tty_struct *tty)
50543 {
50544 struct hvcs_struct *hvcsd = tty->driver_data;
50545
50546- if (!hvcsd || hvcsd->port.count <= 0)
50547+ if (!hvcsd || atomic_read(&hvcsd->port.count) <= 0)
50548 return 0;
50549
50550 return HVCS_BUFF_LEN - hvcsd->chars_in_buffer;
50551diff --git a/drivers/tty/hvc/hvsi.c b/drivers/tty/hvc/hvsi.c
50552index 4190199..06d5bfa 100644
50553--- a/drivers/tty/hvc/hvsi.c
50554+++ b/drivers/tty/hvc/hvsi.c
50555@@ -85,7 +85,7 @@ struct hvsi_struct {
50556 int n_outbuf;
50557 uint32_t vtermno;
50558 uint32_t virq;
50559- atomic_t seqno; /* HVSI packet sequence number */
50560+ atomic_unchecked_t seqno; /* HVSI packet sequence number */
50561 uint16_t mctrl;
50562 uint8_t state; /* HVSI protocol state */
50563 uint8_t flags;
50564@@ -295,7 +295,7 @@ static int hvsi_version_respond(struct hvsi_struct *hp, uint16_t query_seqno)
50565
50566 packet.hdr.type = VS_QUERY_RESPONSE_PACKET_HEADER;
50567 packet.hdr.len = sizeof(struct hvsi_query_response);
50568- packet.hdr.seqno = atomic_inc_return(&hp->seqno);
50569+ packet.hdr.seqno = atomic_inc_return_unchecked(&hp->seqno);
50570 packet.verb = VSV_SEND_VERSION_NUMBER;
50571 packet.u.version = HVSI_VERSION;
50572 packet.query_seqno = query_seqno+1;
50573@@ -555,7 +555,7 @@ static int hvsi_query(struct hvsi_struct *hp, uint16_t verb)
50574
50575 packet.hdr.type = VS_QUERY_PACKET_HEADER;
50576 packet.hdr.len = sizeof(struct hvsi_query);
50577- packet.hdr.seqno = atomic_inc_return(&hp->seqno);
50578+ packet.hdr.seqno = atomic_inc_return_unchecked(&hp->seqno);
50579 packet.verb = verb;
50580
50581 pr_debug("%s: sending %i bytes\n", __func__, packet.hdr.len);
50582@@ -597,7 +597,7 @@ static int hvsi_set_mctrl(struct hvsi_struct *hp, uint16_t mctrl)
50583 int wrote;
50584
50585 packet.hdr.type = VS_CONTROL_PACKET_HEADER,
50586- packet.hdr.seqno = atomic_inc_return(&hp->seqno);
50587+ packet.hdr.seqno = atomic_inc_return_unchecked(&hp->seqno);
50588 packet.hdr.len = sizeof(struct hvsi_control);
50589 packet.verb = VSV_SET_MODEM_CTL;
50590 packet.mask = HVSI_TSDTR;
50591@@ -680,7 +680,7 @@ static int hvsi_put_chars(struct hvsi_struct *hp, const char *buf, int count)
50592 BUG_ON(count > HVSI_MAX_OUTGOING_DATA);
50593
50594 packet.hdr.type = VS_DATA_PACKET_HEADER;
50595- packet.hdr.seqno = atomic_inc_return(&hp->seqno);
50596+ packet.hdr.seqno = atomic_inc_return_unchecked(&hp->seqno);
50597 packet.hdr.len = count + sizeof(struct hvsi_header);
50598 memcpy(&packet.data, buf, count);
50599
50600@@ -697,7 +697,7 @@ static void hvsi_close_protocol(struct hvsi_struct *hp)
50601 struct hvsi_control packet __ALIGNED__;
50602
50603 packet.hdr.type = VS_CONTROL_PACKET_HEADER;
50604- packet.hdr.seqno = atomic_inc_return(&hp->seqno);
50605+ packet.hdr.seqno = atomic_inc_return_unchecked(&hp->seqno);
50606 packet.hdr.len = 6;
50607 packet.verb = VSV_CLOSE_PROTOCOL;
50608
50609@@ -725,7 +725,7 @@ static int hvsi_open(struct tty_struct *tty, struct file *filp)
50610
50611 tty_port_tty_set(&hp->port, tty);
50612 spin_lock_irqsave(&hp->lock, flags);
50613- hp->port.count++;
50614+ atomic_inc(&hp->port.count);
50615 atomic_set(&hp->seqno, 0);
50616 h_vio_signal(hp->vtermno, VIO_IRQ_ENABLE);
50617 spin_unlock_irqrestore(&hp->lock, flags);
50618@@ -782,7 +782,7 @@ static void hvsi_close(struct tty_struct *tty, struct file *filp)
50619
50620 spin_lock_irqsave(&hp->lock, flags);
50621
50622- if (--hp->port.count == 0) {
50623+ if (atomic_dec_return(&hp->port.count) == 0) {
50624 tty_port_tty_set(&hp->port, NULL);
50625 hp->inbuf_end = hp->inbuf; /* discard remaining partial packets */
50626
50627@@ -815,9 +815,9 @@ static void hvsi_close(struct tty_struct *tty, struct file *filp)
50628
50629 spin_lock_irqsave(&hp->lock, flags);
50630 }
50631- } else if (hp->port.count < 0)
50632+ } else if (atomic_read(&hp->port.count) < 0)
50633 printk(KERN_ERR "hvsi_close %lu: oops, count is %d\n",
50634- hp - hvsi_ports, hp->port.count);
50635+ hp - hvsi_ports, atomic_read(&hp->port.count));
50636
50637 spin_unlock_irqrestore(&hp->lock, flags);
50638 }
50639@@ -832,7 +832,7 @@ static void hvsi_hangup(struct tty_struct *tty)
50640 tty_port_tty_set(&hp->port, NULL);
50641
50642 spin_lock_irqsave(&hp->lock, flags);
50643- hp->port.count = 0;
50644+ atomic_set(&hp->port.count, 0);
50645 hp->n_outbuf = 0;
50646 spin_unlock_irqrestore(&hp->lock, flags);
50647 }
50648diff --git a/drivers/tty/hvc/hvsi_lib.c b/drivers/tty/hvc/hvsi_lib.c
50649index 7ae6c29..05c6dba 100644
50650--- a/drivers/tty/hvc/hvsi_lib.c
50651+++ b/drivers/tty/hvc/hvsi_lib.c
50652@@ -8,7 +8,7 @@
50653
50654 static int hvsi_send_packet(struct hvsi_priv *pv, struct hvsi_header *packet)
50655 {
50656- packet->seqno = cpu_to_be16(atomic_inc_return(&pv->seqno));
50657+ packet->seqno = cpu_to_be16(atomic_inc_return_unchecked(&pv->seqno));
50658
50659 /* Assumes that always succeeds, works in practice */
50660 return pv->put_chars(pv->termno, (char *)packet, packet->len);
50661@@ -20,7 +20,7 @@ static void hvsi_start_handshake(struct hvsi_priv *pv)
50662
50663 /* Reset state */
50664 pv->established = 0;
50665- atomic_set(&pv->seqno, 0);
50666+ atomic_set_unchecked(&pv->seqno, 0);
50667
50668 pr_devel("HVSI@%x: Handshaking started\n", pv->termno);
50669
50670diff --git a/drivers/tty/ipwireless/tty.c b/drivers/tty/ipwireless/tty.c
50671index 17ee3bf..8d2520d 100644
50672--- a/drivers/tty/ipwireless/tty.c
50673+++ b/drivers/tty/ipwireless/tty.c
50674@@ -28,6 +28,7 @@
50675 #include <linux/tty_driver.h>
50676 #include <linux/tty_flip.h>
50677 #include <linux/uaccess.h>
50678+#include <asm/local.h>
50679
50680 #include "tty.h"
50681 #include "network.h"
50682@@ -98,10 +99,10 @@ static int ipw_open(struct tty_struct *linux_tty, struct file *filp)
50683 mutex_unlock(&tty->ipw_tty_mutex);
50684 return -ENODEV;
50685 }
50686- if (tty->port.count == 0)
50687+ if (atomic_read(&tty->port.count) == 0)
50688 tty->tx_bytes_queued = 0;
50689
50690- tty->port.count++;
50691+ atomic_inc(&tty->port.count);
50692
50693 tty->port.tty = linux_tty;
50694 linux_tty->driver_data = tty;
50695@@ -117,9 +118,7 @@ static int ipw_open(struct tty_struct *linux_tty, struct file *filp)
50696
50697 static void do_ipw_close(struct ipw_tty *tty)
50698 {
50699- tty->port.count--;
50700-
50701- if (tty->port.count == 0) {
50702+ if (atomic_dec_return(&tty->port.count) == 0) {
50703 struct tty_struct *linux_tty = tty->port.tty;
50704
50705 if (linux_tty != NULL) {
50706@@ -140,7 +139,7 @@ static void ipw_hangup(struct tty_struct *linux_tty)
50707 return;
50708
50709 mutex_lock(&tty->ipw_tty_mutex);
50710- if (tty->port.count == 0) {
50711+ if (atomic_read(&tty->port.count) == 0) {
50712 mutex_unlock(&tty->ipw_tty_mutex);
50713 return;
50714 }
50715@@ -163,7 +162,7 @@ void ipwireless_tty_received(struct ipw_tty *tty, unsigned char *data,
50716
50717 mutex_lock(&tty->ipw_tty_mutex);
50718
50719- if (!tty->port.count) {
50720+ if (!atomic_read(&tty->port.count)) {
50721 mutex_unlock(&tty->ipw_tty_mutex);
50722 return;
50723 }
50724@@ -202,7 +201,7 @@ static int ipw_write(struct tty_struct *linux_tty,
50725 return -ENODEV;
50726
50727 mutex_lock(&tty->ipw_tty_mutex);
50728- if (!tty->port.count) {
50729+ if (!atomic_read(&tty->port.count)) {
50730 mutex_unlock(&tty->ipw_tty_mutex);
50731 return -EINVAL;
50732 }
50733@@ -242,7 +241,7 @@ static int ipw_write_room(struct tty_struct *linux_tty)
50734 if (!tty)
50735 return -ENODEV;
50736
50737- if (!tty->port.count)
50738+ if (!atomic_read(&tty->port.count))
50739 return -EINVAL;
50740
50741 room = IPWIRELESS_TX_QUEUE_SIZE - tty->tx_bytes_queued;
50742@@ -284,7 +283,7 @@ static int ipw_chars_in_buffer(struct tty_struct *linux_tty)
50743 if (!tty)
50744 return 0;
50745
50746- if (!tty->port.count)
50747+ if (!atomic_read(&tty->port.count))
50748 return 0;
50749
50750 return tty->tx_bytes_queued;
50751@@ -365,7 +364,7 @@ static int ipw_tiocmget(struct tty_struct *linux_tty)
50752 if (!tty)
50753 return -ENODEV;
50754
50755- if (!tty->port.count)
50756+ if (!atomic_read(&tty->port.count))
50757 return -EINVAL;
50758
50759 return get_control_lines(tty);
50760@@ -381,7 +380,7 @@ ipw_tiocmset(struct tty_struct *linux_tty,
50761 if (!tty)
50762 return -ENODEV;
50763
50764- if (!tty->port.count)
50765+ if (!atomic_read(&tty->port.count))
50766 return -EINVAL;
50767
50768 return set_control_lines(tty, set, clear);
50769@@ -395,7 +394,7 @@ static int ipw_ioctl(struct tty_struct *linux_tty,
50770 if (!tty)
50771 return -ENODEV;
50772
50773- if (!tty->port.count)
50774+ if (!atomic_read(&tty->port.count))
50775 return -EINVAL;
50776
50777 /* FIXME: Exactly how is the tty object locked here .. */
50778@@ -551,7 +550,7 @@ void ipwireless_tty_free(struct ipw_tty *tty)
50779 * are gone */
50780 mutex_lock(&ttyj->ipw_tty_mutex);
50781 }
50782- while (ttyj->port.count)
50783+ while (atomic_read(&ttyj->port.count))
50784 do_ipw_close(ttyj);
50785 ipwireless_disassociate_network_ttys(network,
50786 ttyj->channel_idx);
50787diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
50788index 1deaca4..c8582d4 100644
50789--- a/drivers/tty/moxa.c
50790+++ b/drivers/tty/moxa.c
50791@@ -1189,7 +1189,7 @@ static int moxa_open(struct tty_struct *tty, struct file *filp)
50792 }
50793
50794 ch = &brd->ports[port % MAX_PORTS_PER_BOARD];
50795- ch->port.count++;
50796+ atomic_inc(&ch->port.count);
50797 tty->driver_data = ch;
50798 tty_port_tty_set(&ch->port, tty);
50799 mutex_lock(&ch->port.mutex);
50800diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
50801index 2ebe47b..3205833 100644
50802--- a/drivers/tty/n_gsm.c
50803+++ b/drivers/tty/n_gsm.c
50804@@ -1644,7 +1644,7 @@ static struct gsm_dlci *gsm_dlci_alloc(struct gsm_mux *gsm, int addr)
50805 spin_lock_init(&dlci->lock);
50806 mutex_init(&dlci->mutex);
50807 dlci->fifo = &dlci->_fifo;
50808- if (kfifo_alloc(&dlci->_fifo, 4096, GFP_KERNEL) < 0) {
50809+ if (kfifo_alloc(&dlci->_fifo, 4096, GFP_KERNEL)) {
50810 kfree(dlci);
50811 return NULL;
50812 }
50813@@ -2954,7 +2954,7 @@ static int gsmtty_open(struct tty_struct *tty, struct file *filp)
50814 struct gsm_dlci *dlci = tty->driver_data;
50815 struct tty_port *port = &dlci->port;
50816
50817- port->count++;
50818+ atomic_inc(&port->count);
50819 tty_port_tty_set(port, tty);
50820
50821 dlci->modem_rx = 0;
50822diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
50823index fe9d129..477300f 100644
50824--- a/drivers/tty/n_tty.c
50825+++ b/drivers/tty/n_tty.c
50826@@ -115,7 +115,7 @@ struct n_tty_data {
50827 int minimum_to_wake;
50828
50829 /* consumer-published */
50830- size_t read_tail;
50831+ size_t read_tail __intentional_overflow(-1);
50832 size_t line_start;
50833
50834 /* protected by output lock */
50835@@ -2516,6 +2516,7 @@ void n_tty_inherit_ops(struct tty_ldisc_ops *ops)
50836 {
50837 *ops = tty_ldisc_N_TTY;
50838 ops->owner = NULL;
50839- ops->refcount = ops->flags = 0;
50840+ atomic_set(&ops->refcount, 0);
50841+ ops->flags = 0;
50842 }
50843 EXPORT_SYMBOL_GPL(n_tty_inherit_ops);
50844diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
50845index 25c9bc7..24077b7 100644
50846--- a/drivers/tty/pty.c
50847+++ b/drivers/tty/pty.c
50848@@ -790,8 +790,10 @@ static void __init unix98_pty_init(void)
50849 panic("Couldn't register Unix98 pts driver");
50850
50851 /* Now create the /dev/ptmx special device */
50852+ pax_open_kernel();
50853 tty_default_fops(&ptmx_fops);
50854- ptmx_fops.open = ptmx_open;
50855+ *(void **)&ptmx_fops.open = ptmx_open;
50856+ pax_close_kernel();
50857
50858 cdev_init(&ptmx_cdev, &ptmx_fops);
50859 if (cdev_add(&ptmx_cdev, MKDEV(TTYAUX_MAJOR, 2), 1) ||
50860diff --git a/drivers/tty/rocket.c b/drivers/tty/rocket.c
50861index 383c4c7..d408e21 100644
50862--- a/drivers/tty/rocket.c
50863+++ b/drivers/tty/rocket.c
50864@@ -914,7 +914,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
50865 tty->driver_data = info;
50866 tty_port_tty_set(port, tty);
50867
50868- if (port->count++ == 0) {
50869+ if (atomic_inc_return(&port->count) == 1) {
50870 atomic_inc(&rp_num_ports_open);
50871
50872 #ifdef ROCKET_DEBUG_OPEN
50873@@ -923,7 +923,7 @@ static int rp_open(struct tty_struct *tty, struct file *filp)
50874 #endif
50875 }
50876 #ifdef ROCKET_DEBUG_OPEN
50877- printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, info->port.count);
50878+ printk(KERN_INFO "rp_open ttyR%d, count=%d\n", info->line, atomic-read(&info->port.count));
50879 #endif
50880
50881 /*
50882@@ -1515,7 +1515,7 @@ static void rp_hangup(struct tty_struct *tty)
50883 spin_unlock_irqrestore(&info->port.lock, flags);
50884 return;
50885 }
50886- if (info->port.count)
50887+ if (atomic_read(&info->port.count))
50888 atomic_dec(&rp_num_ports_open);
50889 clear_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
50890 spin_unlock_irqrestore(&info->port.lock, flags);
50891diff --git a/drivers/tty/serial/ioc4_serial.c b/drivers/tty/serial/ioc4_serial.c
50892index 1274499..f541382 100644
50893--- a/drivers/tty/serial/ioc4_serial.c
50894+++ b/drivers/tty/serial/ioc4_serial.c
50895@@ -437,7 +437,7 @@ struct ioc4_soft {
50896 } is_intr_info[MAX_IOC4_INTR_ENTS];
50897
50898 /* Number of entries active in the above array */
50899- atomic_t is_num_intrs;
50900+ atomic_unchecked_t is_num_intrs;
50901 } is_intr_type[IOC4_NUM_INTR_TYPES];
50902
50903 /* is_ir_lock must be held while
50904@@ -974,7 +974,7 @@ intr_connect(struct ioc4_soft *soft, int type,
50905 BUG_ON(!((type == IOC4_SIO_INTR_TYPE)
50906 || (type == IOC4_OTHER_INTR_TYPE)));
50907
50908- i = atomic_inc_return(&soft-> is_intr_type[type].is_num_intrs) - 1;
50909+ i = atomic_inc_return_unchecked(&soft-> is_intr_type[type].is_num_intrs) - 1;
50910 BUG_ON(!(i < MAX_IOC4_INTR_ENTS || (printk("i %d\n", i), 0)));
50911
50912 /* Save off the lower level interrupt handler */
50913@@ -1001,7 +1001,7 @@ static irqreturn_t ioc4_intr(int irq, void *arg)
50914
50915 soft = arg;
50916 for (intr_type = 0; intr_type < IOC4_NUM_INTR_TYPES; intr_type++) {
50917- num_intrs = (int)atomic_read(
50918+ num_intrs = (int)atomic_read_unchecked(
50919 &soft->is_intr_type[intr_type].is_num_intrs);
50920
50921 this_mir = this_ir = pending_intrs(soft, intr_type);
50922diff --git a/drivers/tty/serial/kgdboc.c b/drivers/tty/serial/kgdboc.c
50923index a260cde..6b2b5ce 100644
50924--- a/drivers/tty/serial/kgdboc.c
50925+++ b/drivers/tty/serial/kgdboc.c
50926@@ -24,8 +24,9 @@
50927 #define MAX_CONFIG_LEN 40
50928
50929 static struct kgdb_io kgdboc_io_ops;
50930+static struct kgdb_io kgdboc_io_ops_console;
50931
50932-/* -1 = init not run yet, 0 = unconfigured, 1 = configured. */
50933+/* -1 = init not run yet, 0 = unconfigured, 1/2 = configured. */
50934 static int configured = -1;
50935
50936 static char config[MAX_CONFIG_LEN];
50937@@ -151,6 +152,8 @@ static void cleanup_kgdboc(void)
50938 kgdboc_unregister_kbd();
50939 if (configured == 1)
50940 kgdb_unregister_io_module(&kgdboc_io_ops);
50941+ else if (configured == 2)
50942+ kgdb_unregister_io_module(&kgdboc_io_ops_console);
50943 }
50944
50945 static int configure_kgdboc(void)
50946@@ -160,13 +163,13 @@ static int configure_kgdboc(void)
50947 int err;
50948 char *cptr = config;
50949 struct console *cons;
50950+ int is_console = 0;
50951
50952 err = kgdboc_option_setup(config);
50953 if (err || !strlen(config) || isspace(config[0]))
50954 goto noconfig;
50955
50956 err = -ENODEV;
50957- kgdboc_io_ops.is_console = 0;
50958 kgdb_tty_driver = NULL;
50959
50960 kgdboc_use_kms = 0;
50961@@ -187,7 +190,7 @@ static int configure_kgdboc(void)
50962 int idx;
50963 if (cons->device && cons->device(cons, &idx) == p &&
50964 idx == tty_line) {
50965- kgdboc_io_ops.is_console = 1;
50966+ is_console = 1;
50967 break;
50968 }
50969 cons = cons->next;
50970@@ -197,7 +200,13 @@ static int configure_kgdboc(void)
50971 kgdb_tty_line = tty_line;
50972
50973 do_register:
50974- err = kgdb_register_io_module(&kgdboc_io_ops);
50975+ if (is_console) {
50976+ err = kgdb_register_io_module(&kgdboc_io_ops_console);
50977+ configured = 2;
50978+ } else {
50979+ err = kgdb_register_io_module(&kgdboc_io_ops);
50980+ configured = 1;
50981+ }
50982 if (err)
50983 goto noconfig;
50984
50985@@ -205,8 +214,6 @@ do_register:
50986 if (err)
50987 goto nmi_con_failed;
50988
50989- configured = 1;
50990-
50991 return 0;
50992
50993 nmi_con_failed:
50994@@ -223,7 +230,7 @@ noconfig:
50995 static int __init init_kgdboc(void)
50996 {
50997 /* Already configured? */
50998- if (configured == 1)
50999+ if (configured >= 1)
51000 return 0;
51001
51002 return configure_kgdboc();
51003@@ -272,7 +279,7 @@ static int param_set_kgdboc_var(const char *kmessage, struct kernel_param *kp)
51004 if (config[len - 1] == '\n')
51005 config[len - 1] = '\0';
51006
51007- if (configured == 1)
51008+ if (configured >= 1)
51009 cleanup_kgdboc();
51010
51011 /* Go and configure with the new params. */
51012@@ -312,6 +319,15 @@ static struct kgdb_io kgdboc_io_ops = {
51013 .post_exception = kgdboc_post_exp_handler,
51014 };
51015
51016+static struct kgdb_io kgdboc_io_ops_console = {
51017+ .name = "kgdboc",
51018+ .read_char = kgdboc_get_char,
51019+ .write_char = kgdboc_put_char,
51020+ .pre_exception = kgdboc_pre_exp_handler,
51021+ .post_exception = kgdboc_post_exp_handler,
51022+ .is_console = 1
51023+};
51024+
51025 #ifdef CONFIG_KGDB_SERIAL_CONSOLE
51026 /* This is only available if kgdboc is a built in for early debugging */
51027 static int __init kgdboc_early_init(char *opt)
51028diff --git a/drivers/tty/serial/msm_serial.c b/drivers/tty/serial/msm_serial.c
51029index 053b98e..86742e5 100644
51030--- a/drivers/tty/serial/msm_serial.c
51031+++ b/drivers/tty/serial/msm_serial.c
51032@@ -1026,7 +1026,7 @@ static struct uart_driver msm_uart_driver = {
51033 .cons = MSM_CONSOLE,
51034 };
51035
51036-static atomic_t msm_uart_next_id = ATOMIC_INIT(0);
51037+static atomic_unchecked_t msm_uart_next_id = ATOMIC_INIT(0);
51038
51039 static const struct of_device_id msm_uartdm_table[] = {
51040 { .compatible = "qcom,msm-uartdm-v1.1", .data = (void *)UARTDM_1P1 },
51041@@ -1045,7 +1045,7 @@ static int __init msm_serial_probe(struct platform_device *pdev)
51042 int irq;
51043
51044 if (pdev->id == -1)
51045- pdev->id = atomic_inc_return(&msm_uart_next_id) - 1;
51046+ pdev->id = atomic_inc_return_unchecked(&msm_uart_next_id) - 1;
51047
51048 if (unlikely(pdev->id < 0 || pdev->id >= UART_NR))
51049 return -ENXIO;
51050diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c
51051index 1f5505e..a1a767d 100644
51052--- a/drivers/tty/serial/samsung.c
51053+++ b/drivers/tty/serial/samsung.c
51054@@ -463,11 +463,16 @@ static void s3c24xx_serial_shutdown(struct uart_port *port)
51055 }
51056 }
51057
51058+static int s3c64xx_serial_startup(struct uart_port *port);
51059 static int s3c24xx_serial_startup(struct uart_port *port)
51060 {
51061 struct s3c24xx_uart_port *ourport = to_ourport(port);
51062 int ret;
51063
51064+ /* Startup sequence is different for s3c64xx and higher SoC's */
51065+ if (s3c24xx_serial_has_interrupt_mask(port))
51066+ return s3c64xx_serial_startup(port);
51067+
51068 dbg("s3c24xx_serial_startup: port=%p (%08lx,%p)\n",
51069 port->mapbase, port->membase);
51070
51071@@ -1141,10 +1146,6 @@ static int s3c24xx_serial_init_port(struct s3c24xx_uart_port *ourport,
51072 /* setup info for port */
51073 port->dev = &platdev->dev;
51074
51075- /* Startup sequence is different for s3c64xx and higher SoC's */
51076- if (s3c24xx_serial_has_interrupt_mask(port))
51077- s3c24xx_serial_ops.startup = s3c64xx_serial_startup;
51078-
51079 port->uartclk = 1;
51080
51081 if (cfg->uart_flags & UPF_CONS_FLOW) {
51082diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
51083index b68550d..a62d7f8 100644
51084--- a/drivers/tty/serial/serial_core.c
51085+++ b/drivers/tty/serial/serial_core.c
51086@@ -1329,7 +1329,7 @@ static void uart_close(struct tty_struct *tty, struct file *filp)
51087
51088 pr_debug("uart_close(%d) called\n", uport ? uport->line : -1);
51089
51090- if (!port->count || tty_port_close_start(port, tty, filp) == 0)
51091+ if (!atomic_read(&port->count) || tty_port_close_start(port, tty, filp) == 0)
51092 return;
51093
51094 /*
51095@@ -1456,7 +1456,7 @@ static void uart_hangup(struct tty_struct *tty)
51096 uart_flush_buffer(tty);
51097 uart_shutdown(tty, state);
51098 spin_lock_irqsave(&port->lock, flags);
51099- port->count = 0;
51100+ atomic_set(&port->count, 0);
51101 clear_bit(ASYNCB_NORMAL_ACTIVE, &port->flags);
51102 spin_unlock_irqrestore(&port->lock, flags);
51103 tty_port_tty_set(port, NULL);
51104@@ -1554,7 +1554,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp)
51105 goto end;
51106 }
51107
51108- port->count++;
51109+ atomic_inc(&port->count);
51110 if (!state->uart_port || state->uart_port->flags & UPF_DEAD) {
51111 retval = -ENXIO;
51112 goto err_dec_count;
51113@@ -1594,7 +1594,7 @@ static int uart_open(struct tty_struct *tty, struct file *filp)
51114 end:
51115 return retval;
51116 err_dec_count:
51117- port->count--;
51118+ atomic_inc(&port->count);
51119 mutex_unlock(&port->mutex);
51120 goto end;
51121 }
51122diff --git a/drivers/tty/synclink.c b/drivers/tty/synclink.c
51123index d48e040..0f52764 100644
51124--- a/drivers/tty/synclink.c
51125+++ b/drivers/tty/synclink.c
51126@@ -3090,7 +3090,7 @@ static void mgsl_close(struct tty_struct *tty, struct file * filp)
51127
51128 if (debug_level >= DEBUG_LEVEL_INFO)
51129 printk("%s(%d):mgsl_close(%s) entry, count=%d\n",
51130- __FILE__,__LINE__, info->device_name, info->port.count);
51131+ __FILE__,__LINE__, info->device_name, atomic_read(&info->port.count));
51132
51133 if (tty_port_close_start(&info->port, tty, filp) == 0)
51134 goto cleanup;
51135@@ -3108,7 +3108,7 @@ static void mgsl_close(struct tty_struct *tty, struct file * filp)
51136 cleanup:
51137 if (debug_level >= DEBUG_LEVEL_INFO)
51138 printk("%s(%d):mgsl_close(%s) exit, count=%d\n", __FILE__,__LINE__,
51139- tty->driver->name, info->port.count);
51140+ tty->driver->name, atomic_read(&info->port.count));
51141
51142 } /* end of mgsl_close() */
51143
51144@@ -3207,8 +3207,8 @@ static void mgsl_hangup(struct tty_struct *tty)
51145
51146 mgsl_flush_buffer(tty);
51147 shutdown(info);
51148-
51149- info->port.count = 0;
51150+
51151+ atomic_set(&info->port.count, 0);
51152 info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
51153 info->port.tty = NULL;
51154
51155@@ -3297,12 +3297,12 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
51156
51157 if (debug_level >= DEBUG_LEVEL_INFO)
51158 printk("%s(%d):block_til_ready before block on %s count=%d\n",
51159- __FILE__,__LINE__, tty->driver->name, port->count );
51160+ __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count));
51161
51162 spin_lock_irqsave(&info->irq_spinlock, flags);
51163 if (!tty_hung_up_p(filp)) {
51164 extra_count = true;
51165- port->count--;
51166+ atomic_dec(&port->count);
51167 }
51168 spin_unlock_irqrestore(&info->irq_spinlock, flags);
51169 port->blocked_open++;
51170@@ -3331,7 +3331,7 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
51171
51172 if (debug_level >= DEBUG_LEVEL_INFO)
51173 printk("%s(%d):block_til_ready blocking on %s count=%d\n",
51174- __FILE__,__LINE__, tty->driver->name, port->count );
51175+ __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count));
51176
51177 tty_unlock(tty);
51178 schedule();
51179@@ -3343,12 +3343,12 @@ static int block_til_ready(struct tty_struct *tty, struct file * filp,
51180
51181 /* FIXME: Racy on hangup during close wait */
51182 if (extra_count)
51183- port->count++;
51184+ atomic_inc(&port->count);
51185 port->blocked_open--;
51186
51187 if (debug_level >= DEBUG_LEVEL_INFO)
51188 printk("%s(%d):block_til_ready after blocking on %s count=%d\n",
51189- __FILE__,__LINE__, tty->driver->name, port->count );
51190+ __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count));
51191
51192 if (!retval)
51193 port->flags |= ASYNC_NORMAL_ACTIVE;
51194@@ -3400,7 +3400,7 @@ static int mgsl_open(struct tty_struct *tty, struct file * filp)
51195
51196 if (debug_level >= DEBUG_LEVEL_INFO)
51197 printk("%s(%d):mgsl_open(%s), old ref count = %d\n",
51198- __FILE__,__LINE__,tty->driver->name, info->port.count);
51199+ __FILE__,__LINE__,tty->driver->name, atomic_read(&info->port.count));
51200
51201 /* If port is closing, signal caller to try again */
51202 if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
51203@@ -3419,10 +3419,10 @@ static int mgsl_open(struct tty_struct *tty, struct file * filp)
51204 spin_unlock_irqrestore(&info->netlock, flags);
51205 goto cleanup;
51206 }
51207- info->port.count++;
51208+ atomic_inc(&info->port.count);
51209 spin_unlock_irqrestore(&info->netlock, flags);
51210
51211- if (info->port.count == 1) {
51212+ if (atomic_read(&info->port.count) == 1) {
51213 /* 1st open on this device, init hardware */
51214 retval = startup(info);
51215 if (retval < 0)
51216@@ -3446,8 +3446,8 @@ cleanup:
51217 if (retval) {
51218 if (tty->count == 1)
51219 info->port.tty = NULL; /* tty layer will release tty struct */
51220- if(info->port.count)
51221- info->port.count--;
51222+ if (atomic_read(&info->port.count))
51223+ atomic_dec(&info->port.count);
51224 }
51225
51226 return retval;
51227@@ -7665,7 +7665,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
51228 unsigned short new_crctype;
51229
51230 /* return error if TTY interface open */
51231- if (info->port.count)
51232+ if (atomic_read(&info->port.count))
51233 return -EBUSY;
51234
51235 switch (encoding)
51236@@ -7760,7 +7760,7 @@ static int hdlcdev_open(struct net_device *dev)
51237
51238 /* arbitrate between network and tty opens */
51239 spin_lock_irqsave(&info->netlock, flags);
51240- if (info->port.count != 0 || info->netcount != 0) {
51241+ if (atomic_read(&info->port.count) != 0 || info->netcount != 0) {
51242 printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name);
51243 spin_unlock_irqrestore(&info->netlock, flags);
51244 return -EBUSY;
51245@@ -7846,7 +7846,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
51246 printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name);
51247
51248 /* return error if TTY interface open */
51249- if (info->port.count)
51250+ if (atomic_read(&info->port.count))
51251 return -EBUSY;
51252
51253 if (cmd != SIOCWANDEV)
51254diff --git a/drivers/tty/synclink_gt.c b/drivers/tty/synclink_gt.c
51255index c359a91..959fc26 100644
51256--- a/drivers/tty/synclink_gt.c
51257+++ b/drivers/tty/synclink_gt.c
51258@@ -670,7 +670,7 @@ static int open(struct tty_struct *tty, struct file *filp)
51259 tty->driver_data = info;
51260 info->port.tty = tty;
51261
51262- DBGINFO(("%s open, old ref count = %d\n", info->device_name, info->port.count));
51263+ DBGINFO(("%s open, old ref count = %d\n", info->device_name, atomic_read(&info->port.count)));
51264
51265 /* If port is closing, signal caller to try again */
51266 if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
51267@@ -691,10 +691,10 @@ static int open(struct tty_struct *tty, struct file *filp)
51268 mutex_unlock(&info->port.mutex);
51269 goto cleanup;
51270 }
51271- info->port.count++;
51272+ atomic_inc(&info->port.count);
51273 spin_unlock_irqrestore(&info->netlock, flags);
51274
51275- if (info->port.count == 1) {
51276+ if (atomic_read(&info->port.count) == 1) {
51277 /* 1st open on this device, init hardware */
51278 retval = startup(info);
51279 if (retval < 0) {
51280@@ -715,8 +715,8 @@ cleanup:
51281 if (retval) {
51282 if (tty->count == 1)
51283 info->port.tty = NULL; /* tty layer will release tty struct */
51284- if(info->port.count)
51285- info->port.count--;
51286+ if(atomic_read(&info->port.count))
51287+ atomic_dec(&info->port.count);
51288 }
51289
51290 DBGINFO(("%s open rc=%d\n", info->device_name, retval));
51291@@ -729,7 +729,7 @@ static void close(struct tty_struct *tty, struct file *filp)
51292
51293 if (sanity_check(info, tty->name, "close"))
51294 return;
51295- DBGINFO(("%s close entry, count=%d\n", info->device_name, info->port.count));
51296+ DBGINFO(("%s close entry, count=%d\n", info->device_name, atomic_read(&info->port.count)));
51297
51298 if (tty_port_close_start(&info->port, tty, filp) == 0)
51299 goto cleanup;
51300@@ -746,7 +746,7 @@ static void close(struct tty_struct *tty, struct file *filp)
51301 tty_port_close_end(&info->port, tty);
51302 info->port.tty = NULL;
51303 cleanup:
51304- DBGINFO(("%s close exit, count=%d\n", tty->driver->name, info->port.count));
51305+ DBGINFO(("%s close exit, count=%d\n", tty->driver->name, atomic_read(&info->port.count)));
51306 }
51307
51308 static void hangup(struct tty_struct *tty)
51309@@ -764,7 +764,7 @@ static void hangup(struct tty_struct *tty)
51310 shutdown(info);
51311
51312 spin_lock_irqsave(&info->port.lock, flags);
51313- info->port.count = 0;
51314+ atomic_set(&info->port.count, 0);
51315 info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
51316 info->port.tty = NULL;
51317 spin_unlock_irqrestore(&info->port.lock, flags);
51318@@ -1449,7 +1449,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
51319 unsigned short new_crctype;
51320
51321 /* return error if TTY interface open */
51322- if (info->port.count)
51323+ if (atomic_read(&info->port.count))
51324 return -EBUSY;
51325
51326 DBGINFO(("%s hdlcdev_attach\n", info->device_name));
51327@@ -1544,7 +1544,7 @@ static int hdlcdev_open(struct net_device *dev)
51328
51329 /* arbitrate between network and tty opens */
51330 spin_lock_irqsave(&info->netlock, flags);
51331- if (info->port.count != 0 || info->netcount != 0) {
51332+ if (atomic_read(&info->port.count) != 0 || info->netcount != 0) {
51333 DBGINFO(("%s hdlc_open busy\n", dev->name));
51334 spin_unlock_irqrestore(&info->netlock, flags);
51335 return -EBUSY;
51336@@ -1629,7 +1629,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
51337 DBGINFO(("%s hdlcdev_ioctl\n", dev->name));
51338
51339 /* return error if TTY interface open */
51340- if (info->port.count)
51341+ if (atomic_read(&info->port.count))
51342 return -EBUSY;
51343
51344 if (cmd != SIOCWANDEV)
51345@@ -2413,7 +2413,7 @@ static irqreturn_t slgt_interrupt(int dummy, void *dev_id)
51346 if (port == NULL)
51347 continue;
51348 spin_lock(&port->lock);
51349- if ((port->port.count || port->netcount) &&
51350+ if ((atomic_read(&port->port.count) || port->netcount) &&
51351 port->pending_bh && !port->bh_running &&
51352 !port->bh_requested) {
51353 DBGISR(("%s bh queued\n", port->device_name));
51354@@ -3302,7 +3302,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
51355 spin_lock_irqsave(&info->lock, flags);
51356 if (!tty_hung_up_p(filp)) {
51357 extra_count = true;
51358- port->count--;
51359+ atomic_dec(&port->count);
51360 }
51361 spin_unlock_irqrestore(&info->lock, flags);
51362 port->blocked_open++;
51363@@ -3339,7 +3339,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
51364 remove_wait_queue(&port->open_wait, &wait);
51365
51366 if (extra_count)
51367- port->count++;
51368+ atomic_inc(&port->count);
51369 port->blocked_open--;
51370
51371 if (!retval)
51372diff --git a/drivers/tty/synclinkmp.c b/drivers/tty/synclinkmp.c
51373index 53ba853..3c30f6d 100644
51374--- a/drivers/tty/synclinkmp.c
51375+++ b/drivers/tty/synclinkmp.c
51376@@ -750,7 +750,7 @@ static int open(struct tty_struct *tty, struct file *filp)
51377
51378 if (debug_level >= DEBUG_LEVEL_INFO)
51379 printk("%s(%d):%s open(), old ref count = %d\n",
51380- __FILE__,__LINE__,tty->driver->name, info->port.count);
51381+ __FILE__,__LINE__,tty->driver->name, atomic_read(&info->port.count));
51382
51383 /* If port is closing, signal caller to try again */
51384 if (tty_hung_up_p(filp) || info->port.flags & ASYNC_CLOSING){
51385@@ -769,10 +769,10 @@ static int open(struct tty_struct *tty, struct file *filp)
51386 spin_unlock_irqrestore(&info->netlock, flags);
51387 goto cleanup;
51388 }
51389- info->port.count++;
51390+ atomic_inc(&info->port.count);
51391 spin_unlock_irqrestore(&info->netlock, flags);
51392
51393- if (info->port.count == 1) {
51394+ if (atomic_read(&info->port.count) == 1) {
51395 /* 1st open on this device, init hardware */
51396 retval = startup(info);
51397 if (retval < 0)
51398@@ -796,8 +796,8 @@ cleanup:
51399 if (retval) {
51400 if (tty->count == 1)
51401 info->port.tty = NULL; /* tty layer will release tty struct */
51402- if(info->port.count)
51403- info->port.count--;
51404+ if(atomic_read(&info->port.count))
51405+ atomic_dec(&info->port.count);
51406 }
51407
51408 return retval;
51409@@ -815,7 +815,7 @@ static void close(struct tty_struct *tty, struct file *filp)
51410
51411 if (debug_level >= DEBUG_LEVEL_INFO)
51412 printk("%s(%d):%s close() entry, count=%d\n",
51413- __FILE__,__LINE__, info->device_name, info->port.count);
51414+ __FILE__,__LINE__, info->device_name, atomic_read(&info->port.count));
51415
51416 if (tty_port_close_start(&info->port, tty, filp) == 0)
51417 goto cleanup;
51418@@ -834,7 +834,7 @@ static void close(struct tty_struct *tty, struct file *filp)
51419 cleanup:
51420 if (debug_level >= DEBUG_LEVEL_INFO)
51421 printk("%s(%d):%s close() exit, count=%d\n", __FILE__,__LINE__,
51422- tty->driver->name, info->port.count);
51423+ tty->driver->name, atomic_read(&info->port.count));
51424 }
51425
51426 /* Called by tty_hangup() when a hangup is signaled.
51427@@ -857,7 +857,7 @@ static void hangup(struct tty_struct *tty)
51428 shutdown(info);
51429
51430 spin_lock_irqsave(&info->port.lock, flags);
51431- info->port.count = 0;
51432+ atomic_set(&info->port.count, 0);
51433 info->port.flags &= ~ASYNC_NORMAL_ACTIVE;
51434 info->port.tty = NULL;
51435 spin_unlock_irqrestore(&info->port.lock, flags);
51436@@ -1565,7 +1565,7 @@ static int hdlcdev_attach(struct net_device *dev, unsigned short encoding,
51437 unsigned short new_crctype;
51438
51439 /* return error if TTY interface open */
51440- if (info->port.count)
51441+ if (atomic_read(&info->port.count))
51442 return -EBUSY;
51443
51444 switch (encoding)
51445@@ -1660,7 +1660,7 @@ static int hdlcdev_open(struct net_device *dev)
51446
51447 /* arbitrate between network and tty opens */
51448 spin_lock_irqsave(&info->netlock, flags);
51449- if (info->port.count != 0 || info->netcount != 0) {
51450+ if (atomic_read(&info->port.count) != 0 || info->netcount != 0) {
51451 printk(KERN_WARNING "%s: hdlc_open returning busy\n", dev->name);
51452 spin_unlock_irqrestore(&info->netlock, flags);
51453 return -EBUSY;
51454@@ -1746,7 +1746,7 @@ static int hdlcdev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
51455 printk("%s:hdlcdev_ioctl(%s)\n",__FILE__,dev->name);
51456
51457 /* return error if TTY interface open */
51458- if (info->port.count)
51459+ if (atomic_read(&info->port.count))
51460 return -EBUSY;
51461
51462 if (cmd != SIOCWANDEV)
51463@@ -2621,7 +2621,7 @@ static irqreturn_t synclinkmp_interrupt(int dummy, void *dev_id)
51464 * do not request bottom half processing if the
51465 * device is not open in a normal mode.
51466 */
51467- if ( port && (port->port.count || port->netcount) &&
51468+ if ( port && (atomic_read(&port->port.count) || port->netcount) &&
51469 port->pending_bh && !port->bh_running &&
51470 !port->bh_requested ) {
51471 if ( debug_level >= DEBUG_LEVEL_ISR )
51472@@ -3319,12 +3319,12 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
51473
51474 if (debug_level >= DEBUG_LEVEL_INFO)
51475 printk("%s(%d):%s block_til_ready() before block, count=%d\n",
51476- __FILE__,__LINE__, tty->driver->name, port->count );
51477+ __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count));
51478
51479 spin_lock_irqsave(&info->lock, flags);
51480 if (!tty_hung_up_p(filp)) {
51481 extra_count = true;
51482- port->count--;
51483+ atomic_dec(&port->count);
51484 }
51485 spin_unlock_irqrestore(&info->lock, flags);
51486 port->blocked_open++;
51487@@ -3353,7 +3353,7 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
51488
51489 if (debug_level >= DEBUG_LEVEL_INFO)
51490 printk("%s(%d):%s block_til_ready() count=%d\n",
51491- __FILE__,__LINE__, tty->driver->name, port->count );
51492+ __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count));
51493
51494 tty_unlock(tty);
51495 schedule();
51496@@ -3364,12 +3364,12 @@ static int block_til_ready(struct tty_struct *tty, struct file *filp,
51497 remove_wait_queue(&port->open_wait, &wait);
51498
51499 if (extra_count)
51500- port->count++;
51501+ atomic_inc(&port->count);
51502 port->blocked_open--;
51503
51504 if (debug_level >= DEBUG_LEVEL_INFO)
51505 printk("%s(%d):%s block_til_ready() after, count=%d\n",
51506- __FILE__,__LINE__, tty->driver->name, port->count );
51507+ __FILE__,__LINE__, tty->driver->name, atomic_read(&port->count));
51508
51509 if (!retval)
51510 port->flags |= ASYNC_NORMAL_ACTIVE;
51511diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
51512index ce396ec..04a37be 100644
51513--- a/drivers/tty/sysrq.c
51514+++ b/drivers/tty/sysrq.c
51515@@ -1075,7 +1075,7 @@ EXPORT_SYMBOL(unregister_sysrq_key);
51516 static ssize_t write_sysrq_trigger(struct file *file, const char __user *buf,
51517 size_t count, loff_t *ppos)
51518 {
51519- if (count) {
51520+ if (count && capable(CAP_SYS_ADMIN)) {
51521 char c;
51522
51523 if (get_user(c, buf))
51524diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
51525index 3411071..86f2cf2 100644
51526--- a/drivers/tty/tty_io.c
51527+++ b/drivers/tty/tty_io.c
51528@@ -3475,7 +3475,7 @@ EXPORT_SYMBOL_GPL(get_current_tty);
51529
51530 void tty_default_fops(struct file_operations *fops)
51531 {
51532- *fops = tty_fops;
51533+ memcpy((void *)fops, &tty_fops, sizeof(tty_fops));
51534 }
51535
51536 /*
51537diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
51538index 2d822aa..a566234 100644
51539--- a/drivers/tty/tty_ldisc.c
51540+++ b/drivers/tty/tty_ldisc.c
51541@@ -71,7 +71,7 @@ int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc)
51542 raw_spin_lock_irqsave(&tty_ldiscs_lock, flags);
51543 tty_ldiscs[disc] = new_ldisc;
51544 new_ldisc->num = disc;
51545- new_ldisc->refcount = 0;
51546+ atomic_set(&new_ldisc->refcount, 0);
51547 raw_spin_unlock_irqrestore(&tty_ldiscs_lock, flags);
51548
51549 return ret;
51550@@ -99,7 +99,7 @@ int tty_unregister_ldisc(int disc)
51551 return -EINVAL;
51552
51553 raw_spin_lock_irqsave(&tty_ldiscs_lock, flags);
51554- if (tty_ldiscs[disc]->refcount)
51555+ if (atomic_read(&tty_ldiscs[disc]->refcount))
51556 ret = -EBUSY;
51557 else
51558 tty_ldiscs[disc] = NULL;
51559@@ -120,7 +120,7 @@ static struct tty_ldisc_ops *get_ldops(int disc)
51560 if (ldops) {
51561 ret = ERR_PTR(-EAGAIN);
51562 if (try_module_get(ldops->owner)) {
51563- ldops->refcount++;
51564+ atomic_inc(&ldops->refcount);
51565 ret = ldops;
51566 }
51567 }
51568@@ -133,7 +133,7 @@ static void put_ldops(struct tty_ldisc_ops *ldops)
51569 unsigned long flags;
51570
51571 raw_spin_lock_irqsave(&tty_ldiscs_lock, flags);
51572- ldops->refcount--;
51573+ atomic_dec(&ldops->refcount);
51574 module_put(ldops->owner);
51575 raw_spin_unlock_irqrestore(&tty_ldiscs_lock, flags);
51576 }
51577diff --git a/drivers/tty/tty_port.c b/drivers/tty/tty_port.c
51578index 3f746c8..2f2fcaa 100644
51579--- a/drivers/tty/tty_port.c
51580+++ b/drivers/tty/tty_port.c
51581@@ -235,7 +235,7 @@ void tty_port_hangup(struct tty_port *port)
51582 unsigned long flags;
51583
51584 spin_lock_irqsave(&port->lock, flags);
51585- port->count = 0;
51586+ atomic_set(&port->count, 0);
51587 port->flags &= ~ASYNC_NORMAL_ACTIVE;
51588 tty = port->tty;
51589 if (tty)
51590@@ -393,7 +393,7 @@ int tty_port_block_til_ready(struct tty_port *port,
51591 /* The port lock protects the port counts */
51592 spin_lock_irqsave(&port->lock, flags);
51593 if (!tty_hung_up_p(filp))
51594- port->count--;
51595+ atomic_dec(&port->count);
51596 port->blocked_open++;
51597 spin_unlock_irqrestore(&port->lock, flags);
51598
51599@@ -435,7 +435,7 @@ int tty_port_block_til_ready(struct tty_port *port,
51600 we must not mess that up further */
51601 spin_lock_irqsave(&port->lock, flags);
51602 if (!tty_hung_up_p(filp))
51603- port->count++;
51604+ atomic_inc(&port->count);
51605 port->blocked_open--;
51606 if (retval == 0)
51607 port->flags |= ASYNC_NORMAL_ACTIVE;
51608@@ -469,19 +469,19 @@ int tty_port_close_start(struct tty_port *port,
51609 return 0;
51610 }
51611
51612- if (tty->count == 1 && port->count != 1) {
51613+ if (tty->count == 1 && atomic_read(&port->count) != 1) {
51614 printk(KERN_WARNING
51615 "tty_port_close_start: tty->count = 1 port count = %d.\n",
51616- port->count);
51617- port->count = 1;
51618+ atomic_read(&port->count));
51619+ atomic_set(&port->count, 1);
51620 }
51621- if (--port->count < 0) {
51622+ if (atomic_dec_return(&port->count) < 0) {
51623 printk(KERN_WARNING "tty_port_close_start: count = %d\n",
51624- port->count);
51625- port->count = 0;
51626+ atomic_read(&port->count));
51627+ atomic_set(&port->count, 0);
51628 }
51629
51630- if (port->count) {
51631+ if (atomic_read(&port->count)) {
51632 spin_unlock_irqrestore(&port->lock, flags);
51633 return 0;
51634 }
51635@@ -563,7 +563,7 @@ int tty_port_open(struct tty_port *port, struct tty_struct *tty,
51636 {
51637 spin_lock_irq(&port->lock);
51638 if (!tty_hung_up_p(filp))
51639- ++port->count;
51640+ atomic_inc(&port->count);
51641 spin_unlock_irq(&port->lock);
51642 tty_port_tty_set(port, tty);
51643
51644diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
51645index d0e3a44..5f8b754 100644
51646--- a/drivers/tty/vt/keyboard.c
51647+++ b/drivers/tty/vt/keyboard.c
51648@@ -641,6 +641,16 @@ static void k_spec(struct vc_data *vc, unsigned char value, char up_flag)
51649 kbd->kbdmode == VC_OFF) &&
51650 value != KVAL(K_SAK))
51651 return; /* SAK is allowed even in raw mode */
51652+
51653+#if defined(CONFIG_GRKERNSEC_PROC) || defined(CONFIG_GRKERNSEC_PROC_MEMMAP)
51654+ {
51655+ void *func = fn_handler[value];
51656+ if (func == fn_show_state || func == fn_show_ptregs ||
51657+ func == fn_show_mem)
51658+ return;
51659+ }
51660+#endif
51661+
51662 fn_handler[value](vc);
51663 }
51664
51665@@ -1776,9 +1786,6 @@ int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
51666 if (copy_from_user(&tmp, user_kbe, sizeof(struct kbentry)))
51667 return -EFAULT;
51668
51669- if (!capable(CAP_SYS_TTY_CONFIG))
51670- perm = 0;
51671-
51672 switch (cmd) {
51673 case KDGKBENT:
51674 /* Ensure another thread doesn't free it under us */
51675@@ -1793,6 +1800,9 @@ int vt_do_kdsk_ioctl(int cmd, struct kbentry __user *user_kbe, int perm,
51676 spin_unlock_irqrestore(&kbd_event_lock, flags);
51677 return put_user(val, &user_kbe->kb_value);
51678 case KDSKBENT:
51679+ if (!capable(CAP_SYS_TTY_CONFIG))
51680+ perm = 0;
51681+
51682 if (!perm)
51683 return -EPERM;
51684 if (!i && v == K_NOSUCHMAP) {
51685@@ -1883,9 +1893,6 @@ int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
51686 int i, j, k;
51687 int ret;
51688
51689- if (!capable(CAP_SYS_TTY_CONFIG))
51690- perm = 0;
51691-
51692 kbs = kmalloc(sizeof(*kbs), GFP_KERNEL);
51693 if (!kbs) {
51694 ret = -ENOMEM;
51695@@ -1919,6 +1926,9 @@ int vt_do_kdgkb_ioctl(int cmd, struct kbsentry __user *user_kdgkb, int perm)
51696 kfree(kbs);
51697 return ((p && *p) ? -EOVERFLOW : 0);
51698 case KDSKBSENT:
51699+ if (!capable(CAP_SYS_TTY_CONFIG))
51700+ perm = 0;
51701+
51702 if (!perm) {
51703 ret = -EPERM;
51704 goto reterr;
51705diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
51706index a673e5b..36e5d32 100644
51707--- a/drivers/uio/uio.c
51708+++ b/drivers/uio/uio.c
51709@@ -25,6 +25,7 @@
51710 #include <linux/kobject.h>
51711 #include <linux/cdev.h>
51712 #include <linux/uio_driver.h>
51713+#include <asm/local.h>
51714
51715 #define UIO_MAX_DEVICES (1U << MINORBITS)
51716
51717@@ -32,7 +33,7 @@ struct uio_device {
51718 struct module *owner;
51719 struct device *dev;
51720 int minor;
51721- atomic_t event;
51722+ atomic_unchecked_t event;
51723 struct fasync_struct *async_queue;
51724 wait_queue_head_t wait;
51725 struct uio_info *info;
51726@@ -243,7 +244,7 @@ static ssize_t event_show(struct device *dev,
51727 struct device_attribute *attr, char *buf)
51728 {
51729 struct uio_device *idev = dev_get_drvdata(dev);
51730- return sprintf(buf, "%u\n", (unsigned int)atomic_read(&idev->event));
51731+ return sprintf(buf, "%u\n", (unsigned int)atomic_read_unchecked(&idev->event));
51732 }
51733 static DEVICE_ATTR_RO(event);
51734
51735@@ -405,7 +406,7 @@ void uio_event_notify(struct uio_info *info)
51736 {
51737 struct uio_device *idev = info->uio_dev;
51738
51739- atomic_inc(&idev->event);
51740+ atomic_inc_unchecked(&idev->event);
51741 wake_up_interruptible(&idev->wait);
51742 kill_fasync(&idev->async_queue, SIGIO, POLL_IN);
51743 }
51744@@ -458,7 +459,7 @@ static int uio_open(struct inode *inode, struct file *filep)
51745 }
51746
51747 listener->dev = idev;
51748- listener->event_count = atomic_read(&idev->event);
51749+ listener->event_count = atomic_read_unchecked(&idev->event);
51750 filep->private_data = listener;
51751
51752 if (idev->info->open) {
51753@@ -509,7 +510,7 @@ static unsigned int uio_poll(struct file *filep, poll_table *wait)
51754 return -EIO;
51755
51756 poll_wait(filep, &idev->wait, wait);
51757- if (listener->event_count != atomic_read(&idev->event))
51758+ if (listener->event_count != atomic_read_unchecked(&idev->event))
51759 return POLLIN | POLLRDNORM;
51760 return 0;
51761 }
51762@@ -534,7 +535,7 @@ static ssize_t uio_read(struct file *filep, char __user *buf,
51763 do {
51764 set_current_state(TASK_INTERRUPTIBLE);
51765
51766- event_count = atomic_read(&idev->event);
51767+ event_count = atomic_read_unchecked(&idev->event);
51768 if (event_count != listener->event_count) {
51769 if (copy_to_user(buf, &event_count, count))
51770 retval = -EFAULT;
51771@@ -591,9 +592,13 @@ static ssize_t uio_write(struct file *filep, const char __user *buf,
51772 static int uio_find_mem_index(struct vm_area_struct *vma)
51773 {
51774 struct uio_device *idev = vma->vm_private_data;
51775+ unsigned long size;
51776
51777 if (vma->vm_pgoff < MAX_UIO_MAPS) {
51778- if (idev->info->mem[vma->vm_pgoff].size == 0)
51779+ size = idev->info->mem[vma->vm_pgoff].size;
51780+ if (size == 0)
51781+ return -1;
51782+ if (vma->vm_end - vma->vm_start > size)
51783 return -1;
51784 return (int)vma->vm_pgoff;
51785 }
51786@@ -825,7 +830,7 @@ int __uio_register_device(struct module *owner,
51787 idev->owner = owner;
51788 idev->info = info;
51789 init_waitqueue_head(&idev->wait);
51790- atomic_set(&idev->event, 0);
51791+ atomic_set_unchecked(&idev->event, 0);
51792
51793 ret = uio_get_minor(idev);
51794 if (ret)
51795diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c
51796index 813d4d3..a71934f 100644
51797--- a/drivers/usb/atm/cxacru.c
51798+++ b/drivers/usb/atm/cxacru.c
51799@@ -472,7 +472,7 @@ static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev,
51800 ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp);
51801 if (ret < 2)
51802 return -EINVAL;
51803- if (index < 0 || index > 0x7f)
51804+ if (index > 0x7f)
51805 return -EINVAL;
51806 pos += tmp;
51807
51808diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c
51809index dada014..1d0d517 100644
51810--- a/drivers/usb/atm/usbatm.c
51811+++ b/drivers/usb/atm/usbatm.c
51812@@ -331,7 +331,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
51813 if (printk_ratelimit())
51814 atm_warn(instance, "%s: OAM not supported (vpi %d, vci %d)!\n",
51815 __func__, vpi, vci);
51816- atomic_inc(&vcc->stats->rx_err);
51817+ atomic_inc_unchecked(&vcc->stats->rx_err);
51818 return;
51819 }
51820
51821@@ -358,7 +358,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
51822 if (length > ATM_MAX_AAL5_PDU) {
51823 atm_rldbg(instance, "%s: bogus length %u (vcc: 0x%p)!\n",
51824 __func__, length, vcc);
51825- atomic_inc(&vcc->stats->rx_err);
51826+ atomic_inc_unchecked(&vcc->stats->rx_err);
51827 goto out;
51828 }
51829
51830@@ -367,14 +367,14 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
51831 if (sarb->len < pdu_length) {
51832 atm_rldbg(instance, "%s: bogus pdu_length %u (sarb->len: %u, vcc: 0x%p)!\n",
51833 __func__, pdu_length, sarb->len, vcc);
51834- atomic_inc(&vcc->stats->rx_err);
51835+ atomic_inc_unchecked(&vcc->stats->rx_err);
51836 goto out;
51837 }
51838
51839 if (crc32_be(~0, skb_tail_pointer(sarb) - pdu_length, pdu_length) != 0xc704dd7b) {
51840 atm_rldbg(instance, "%s: packet failed crc check (vcc: 0x%p)!\n",
51841 __func__, vcc);
51842- atomic_inc(&vcc->stats->rx_err);
51843+ atomic_inc_unchecked(&vcc->stats->rx_err);
51844 goto out;
51845 }
51846
51847@@ -386,7 +386,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
51848 if (printk_ratelimit())
51849 atm_err(instance, "%s: no memory for skb (length: %u)!\n",
51850 __func__, length);
51851- atomic_inc(&vcc->stats->rx_drop);
51852+ atomic_inc_unchecked(&vcc->stats->rx_drop);
51853 goto out;
51854 }
51855
51856@@ -414,7 +414,7 @@ static void usbatm_extract_one_cell(struct usbatm_data *instance, unsigned char
51857
51858 vcc->push(vcc, skb);
51859
51860- atomic_inc(&vcc->stats->rx);
51861+ atomic_inc_unchecked(&vcc->stats->rx);
51862 out:
51863 skb_trim(sarb, 0);
51864 }
51865@@ -612,7 +612,7 @@ static void usbatm_tx_process(unsigned long data)
51866 struct atm_vcc *vcc = UDSL_SKB(skb)->atm.vcc;
51867
51868 usbatm_pop(vcc, skb);
51869- atomic_inc(&vcc->stats->tx);
51870+ atomic_inc_unchecked(&vcc->stats->tx);
51871
51872 skb = skb_dequeue(&instance->sndqueue);
51873 }
51874@@ -756,11 +756,11 @@ static int usbatm_atm_proc_read(struct atm_dev *atm_dev, loff_t *pos, char *page
51875 if (!left--)
51876 return sprintf(page,
51877 "AAL5: tx %d ( %d err ), rx %d ( %d err, %d drop )\n",
51878- atomic_read(&atm_dev->stats.aal5.tx),
51879- atomic_read(&atm_dev->stats.aal5.tx_err),
51880- atomic_read(&atm_dev->stats.aal5.rx),
51881- atomic_read(&atm_dev->stats.aal5.rx_err),
51882- atomic_read(&atm_dev->stats.aal5.rx_drop));
51883+ atomic_read_unchecked(&atm_dev->stats.aal5.tx),
51884+ atomic_read_unchecked(&atm_dev->stats.aal5.tx_err),
51885+ atomic_read_unchecked(&atm_dev->stats.aal5.rx),
51886+ atomic_read_unchecked(&atm_dev->stats.aal5.rx_err),
51887+ atomic_read_unchecked(&atm_dev->stats.aal5.rx_drop));
51888
51889 if (!left--) {
51890 if (instance->disconnected)
51891diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c
51892index 2a3bbdf..91d72cf 100644
51893--- a/drivers/usb/core/devices.c
51894+++ b/drivers/usb/core/devices.c
51895@@ -126,7 +126,7 @@ static const char format_endpt[] =
51896 * time it gets called.
51897 */
51898 static struct device_connect_event {
51899- atomic_t count;
51900+ atomic_unchecked_t count;
51901 wait_queue_head_t wait;
51902 } device_event = {
51903 .count = ATOMIC_INIT(1),
51904@@ -164,7 +164,7 @@ static const struct class_info clas_info[] = {
51905
51906 void usbfs_conn_disc_event(void)
51907 {
51908- atomic_add(2, &device_event.count);
51909+ atomic_add_unchecked(2, &device_event.count);
51910 wake_up(&device_event.wait);
51911 }
51912
51913@@ -652,7 +652,7 @@ static unsigned int usb_device_poll(struct file *file,
51914
51915 poll_wait(file, &device_event.wait, wait);
51916
51917- event_count = atomic_read(&device_event.count);
51918+ event_count = atomic_read_unchecked(&device_event.count);
51919 if (file->f_version != event_count) {
51920 file->f_version = event_count;
51921 return POLLIN | POLLRDNORM;
51922diff --git a/drivers/usb/core/devio.c b/drivers/usb/core/devio.c
51923index 257876e..4304364 100644
51924--- a/drivers/usb/core/devio.c
51925+++ b/drivers/usb/core/devio.c
51926@@ -187,7 +187,7 @@ static ssize_t usbdev_read(struct file *file, char __user *buf, size_t nbytes,
51927 struct usb_dev_state *ps = file->private_data;
51928 struct usb_device *dev = ps->dev;
51929 ssize_t ret = 0;
51930- unsigned len;
51931+ size_t len;
51932 loff_t pos;
51933 int i;
51934
51935@@ -229,22 +229,22 @@ static ssize_t usbdev_read(struct file *file, char __user *buf, size_t nbytes,
51936 for (i = 0; nbytes && i < dev->descriptor.bNumConfigurations; i++) {
51937 struct usb_config_descriptor *config =
51938 (struct usb_config_descriptor *)dev->rawdescriptors[i];
51939- unsigned int length = le16_to_cpu(config->wTotalLength);
51940+ size_t length = le16_to_cpu(config->wTotalLength);
51941
51942 if (*ppos < pos + length) {
51943
51944 /* The descriptor may claim to be longer than it
51945 * really is. Here is the actual allocated length. */
51946- unsigned alloclen =
51947+ size_t alloclen =
51948 le16_to_cpu(dev->config[i].desc.wTotalLength);
51949
51950- len = length - (*ppos - pos);
51951+ len = length + pos - *ppos;
51952 if (len > nbytes)
51953 len = nbytes;
51954
51955 /* Simply don't write (skip over) unallocated parts */
51956 if (alloclen > (*ppos - pos)) {
51957- alloclen -= (*ppos - pos);
51958+ alloclen = alloclen + pos - *ppos;
51959 if (copy_to_user(buf,
51960 dev->rawdescriptors[i] + (*ppos - pos),
51961 min(len, alloclen))) {
51962diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c
51963index 9c4e292..b89877f 100644
51964--- a/drivers/usb/core/hcd.c
51965+++ b/drivers/usb/core/hcd.c
51966@@ -1550,7 +1550,7 @@ int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags)
51967 */
51968 usb_get_urb(urb);
51969 atomic_inc(&urb->use_count);
51970- atomic_inc(&urb->dev->urbnum);
51971+ atomic_inc_unchecked(&urb->dev->urbnum);
51972 usbmon_urb_submit(&hcd->self, urb);
51973
51974 /* NOTE requirements on root-hub callers (usbfs and the hub
51975@@ -1577,7 +1577,7 @@ int usb_hcd_submit_urb (struct urb *urb, gfp_t mem_flags)
51976 urb->hcpriv = NULL;
51977 INIT_LIST_HEAD(&urb->urb_list);
51978 atomic_dec(&urb->use_count);
51979- atomic_dec(&urb->dev->urbnum);
51980+ atomic_dec_unchecked(&urb->dev->urbnum);
51981 if (atomic_read(&urb->reject))
51982 wake_up(&usb_kill_urb_queue);
51983 usb_put_urb(urb);
51984diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
51985index 229a73f..ef86f98 100644
51986--- a/drivers/usb/core/hub.c
51987+++ b/drivers/usb/core/hub.c
51988@@ -27,6 +27,7 @@
51989 #include <linux/freezer.h>
51990 #include <linux/random.h>
51991 #include <linux/pm_qos.h>
51992+#include <linux/grsecurity.h>
51993
51994 #include <asm/uaccess.h>
51995 #include <asm/byteorder.h>
51996@@ -4512,6 +4513,10 @@ static void hub_port_connect_change(struct usb_hub *hub, int port1,
51997 goto done;
51998 return;
51999 }
52000+
52001+ if (gr_handle_new_usb())
52002+ goto done;
52003+
52004 if (hub_is_superspeed(hub->hdev))
52005 unit_load = 150;
52006 else
52007diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
52008index 0c8a7fc..c45b40a 100644
52009--- a/drivers/usb/core/message.c
52010+++ b/drivers/usb/core/message.c
52011@@ -128,7 +128,7 @@ static int usb_internal_control_msg(struct usb_device *usb_dev,
52012 * Return: If successful, the number of bytes transferred. Otherwise, a negative
52013 * error number.
52014 */
52015-int usb_control_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
52016+int __intentional_overflow(-1) usb_control_msg(struct usb_device *dev, unsigned int pipe, __u8 request,
52017 __u8 requesttype, __u16 value, __u16 index, void *data,
52018 __u16 size, int timeout)
52019 {
52020@@ -180,7 +180,7 @@ EXPORT_SYMBOL_GPL(usb_control_msg);
52021 * If successful, 0. Otherwise a negative error number. The number of actual
52022 * bytes transferred will be stored in the @actual_length parameter.
52023 */
52024-int usb_interrupt_msg(struct usb_device *usb_dev, unsigned int pipe,
52025+int __intentional_overflow(-1) usb_interrupt_msg(struct usb_device *usb_dev, unsigned int pipe,
52026 void *data, int len, int *actual_length, int timeout)
52027 {
52028 return usb_bulk_msg(usb_dev, pipe, data, len, actual_length, timeout);
52029@@ -220,7 +220,7 @@ EXPORT_SYMBOL_GPL(usb_interrupt_msg);
52030 * bytes transferred will be stored in the @actual_length parameter.
52031 *
52032 */
52033-int usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe,
52034+int __intentional_overflow(-1) usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe,
52035 void *data, int len, int *actual_length, int timeout)
52036 {
52037 struct urb *urb;
52038diff --git a/drivers/usb/core/sysfs.c b/drivers/usb/core/sysfs.c
52039index 1236c60..d47a51c 100644
52040--- a/drivers/usb/core/sysfs.c
52041+++ b/drivers/usb/core/sysfs.c
52042@@ -244,7 +244,7 @@ static ssize_t urbnum_show(struct device *dev, struct device_attribute *attr,
52043 struct usb_device *udev;
52044
52045 udev = to_usb_device(dev);
52046- return sprintf(buf, "%d\n", atomic_read(&udev->urbnum));
52047+ return sprintf(buf, "%d\n", atomic_read_unchecked(&udev->urbnum));
52048 }
52049 static DEVICE_ATTR_RO(urbnum);
52050
52051diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
52052index 4d11449..f4ccabf 100644
52053--- a/drivers/usb/core/usb.c
52054+++ b/drivers/usb/core/usb.c
52055@@ -433,7 +433,7 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent,
52056 set_dev_node(&dev->dev, dev_to_node(bus->controller));
52057 dev->state = USB_STATE_ATTACHED;
52058 dev->lpm_disable_count = 1;
52059- atomic_set(&dev->urbnum, 0);
52060+ atomic_set_unchecked(&dev->urbnum, 0);
52061
52062 INIT_LIST_HEAD(&dev->ep0.urb_list);
52063 dev->ep0.desc.bLength = USB_DT_ENDPOINT_SIZE;
52064diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
52065index 85f398d..d375bbe 100644
52066--- a/drivers/usb/dwc3/gadget.c
52067+++ b/drivers/usb/dwc3/gadget.c
52068@@ -550,8 +550,6 @@ static int __dwc3_gadget_ep_enable(struct dwc3_ep *dep,
52069 if (!usb_endpoint_xfer_isoc(desc))
52070 return 0;
52071
52072- memset(&trb_link, 0, sizeof(trb_link));
52073-
52074 /* Link TRB for ISOC. The HWO bit is never reset */
52075 trb_st_hw = &dep->trb_pool[0];
52076
52077diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c
52078index 8cfc319..4868255 100644
52079--- a/drivers/usb/early/ehci-dbgp.c
52080+++ b/drivers/usb/early/ehci-dbgp.c
52081@@ -98,7 +98,8 @@ static inline u32 dbgp_len_update(u32 x, u32 len)
52082
52083 #ifdef CONFIG_KGDB
52084 static struct kgdb_io kgdbdbgp_io_ops;
52085-#define dbgp_kgdb_mode (dbg_io_ops == &kgdbdbgp_io_ops)
52086+static struct kgdb_io kgdbdbgp_io_ops_console;
52087+#define dbgp_kgdb_mode (dbg_io_ops == &kgdbdbgp_io_ops || dbg_io_ops == &kgdbdbgp_io_ops_console)
52088 #else
52089 #define dbgp_kgdb_mode (0)
52090 #endif
52091@@ -1043,6 +1044,13 @@ static struct kgdb_io kgdbdbgp_io_ops = {
52092 .write_char = kgdbdbgp_write_char,
52093 };
52094
52095+static struct kgdb_io kgdbdbgp_io_ops_console = {
52096+ .name = "kgdbdbgp",
52097+ .read_char = kgdbdbgp_read_char,
52098+ .write_char = kgdbdbgp_write_char,
52099+ .is_console = 1
52100+};
52101+
52102 static int kgdbdbgp_wait_time;
52103
52104 static int __init kgdbdbgp_parse_config(char *str)
52105@@ -1058,8 +1066,10 @@ static int __init kgdbdbgp_parse_config(char *str)
52106 ptr++;
52107 kgdbdbgp_wait_time = simple_strtoul(ptr, &ptr, 10);
52108 }
52109- kgdb_register_io_module(&kgdbdbgp_io_ops);
52110- kgdbdbgp_io_ops.is_console = early_dbgp_console.index != -1;
52111+ if (early_dbgp_console.index != -1)
52112+ kgdb_register_io_module(&kgdbdbgp_io_ops_console);
52113+ else
52114+ kgdb_register_io_module(&kgdbdbgp_io_ops);
52115
52116 return 0;
52117 }
52118diff --git a/drivers/usb/gadget/f_uac1.c b/drivers/usb/gadget/f_uac1.c
52119index 2b4c82d..06a8ee6 100644
52120--- a/drivers/usb/gadget/f_uac1.c
52121+++ b/drivers/usb/gadget/f_uac1.c
52122@@ -13,6 +13,7 @@
52123 #include <linux/kernel.h>
52124 #include <linux/device.h>
52125 #include <linux/atomic.h>
52126+#include <linux/module.h>
52127
52128 #include "u_uac1.h"
52129
52130diff --git a/drivers/usb/gadget/u_serial.c b/drivers/usb/gadget/u_serial.c
52131index ad0aca8..8ff84865 100644
52132--- a/drivers/usb/gadget/u_serial.c
52133+++ b/drivers/usb/gadget/u_serial.c
52134@@ -733,9 +733,9 @@ static int gs_open(struct tty_struct *tty, struct file *file)
52135 spin_lock_irq(&port->port_lock);
52136
52137 /* already open? Great. */
52138- if (port->port.count) {
52139+ if (atomic_read(&port->port.count)) {
52140 status = 0;
52141- port->port.count++;
52142+ atomic_inc(&port->port.count);
52143
52144 /* currently opening/closing? wait ... */
52145 } else if (port->openclose) {
52146@@ -794,7 +794,7 @@ static int gs_open(struct tty_struct *tty, struct file *file)
52147 tty->driver_data = port;
52148 port->port.tty = tty;
52149
52150- port->port.count = 1;
52151+ atomic_set(&port->port.count, 1);
52152 port->openclose = false;
52153
52154 /* if connected, start the I/O stream */
52155@@ -836,11 +836,11 @@ static void gs_close(struct tty_struct *tty, struct file *file)
52156
52157 spin_lock_irq(&port->port_lock);
52158
52159- if (port->port.count != 1) {
52160- if (port->port.count == 0)
52161+ if (atomic_read(&port->port.count) != 1) {
52162+ if (atomic_read(&port->port.count) == 0)
52163 WARN_ON(1);
52164 else
52165- --port->port.count;
52166+ atomic_dec(&port->port.count);
52167 goto exit;
52168 }
52169
52170@@ -850,7 +850,7 @@ static void gs_close(struct tty_struct *tty, struct file *file)
52171 * and sleep if necessary
52172 */
52173 port->openclose = true;
52174- port->port.count = 0;
52175+ atomic_set(&port->port.count, 0);
52176
52177 gser = port->port_usb;
52178 if (gser && gser->disconnect)
52179@@ -1066,7 +1066,7 @@ static int gs_closed(struct gs_port *port)
52180 int cond;
52181
52182 spin_lock_irq(&port->port_lock);
52183- cond = (port->port.count == 0) && !port->openclose;
52184+ cond = (atomic_read(&port->port.count) == 0) && !port->openclose;
52185 spin_unlock_irq(&port->port_lock);
52186 return cond;
52187 }
52188@@ -1209,7 +1209,7 @@ int gserial_connect(struct gserial *gser, u8 port_num)
52189 /* if it's already open, start I/O ... and notify the serial
52190 * protocol about open/close status (connect/disconnect).
52191 */
52192- if (port->port.count) {
52193+ if (atomic_read(&port->port.count)) {
52194 pr_debug("gserial_connect: start ttyGS%d\n", port->port_num);
52195 gs_start_io(port);
52196 if (gser->connect)
52197@@ -1256,7 +1256,7 @@ void gserial_disconnect(struct gserial *gser)
52198
52199 port->port_usb = NULL;
52200 gser->ioport = NULL;
52201- if (port->port.count > 0 || port->openclose) {
52202+ if (atomic_read(&port->port.count) > 0 || port->openclose) {
52203 wake_up_interruptible(&port->drain_wait);
52204 if (port->port.tty)
52205 tty_hangup(port->port.tty);
52206@@ -1272,7 +1272,7 @@ void gserial_disconnect(struct gserial *gser)
52207
52208 /* finally, free any unused/unusable I/O buffers */
52209 spin_lock_irqsave(&port->port_lock, flags);
52210- if (port->port.count == 0 && !port->openclose)
52211+ if (atomic_read(&port->port.count) == 0 && !port->openclose)
52212 gs_buf_free(&port->port_write_buf);
52213 gs_free_requests(gser->out, &port->read_pool, NULL);
52214 gs_free_requests(gser->out, &port->read_queue, NULL);
52215diff --git a/drivers/usb/gadget/u_uac1.c b/drivers/usb/gadget/u_uac1.c
52216index 7a55fea..cc0ed4f 100644
52217--- a/drivers/usb/gadget/u_uac1.c
52218+++ b/drivers/usb/gadget/u_uac1.c
52219@@ -16,6 +16,7 @@
52220 #include <linux/ctype.h>
52221 #include <linux/random.h>
52222 #include <linux/syscalls.h>
52223+#include <linux/module.h>
52224
52225 #include "u_uac1.h"
52226
52227diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
52228index 7ae0c4d..35521b7 100644
52229--- a/drivers/usb/host/ehci-hub.c
52230+++ b/drivers/usb/host/ehci-hub.c
52231@@ -780,7 +780,7 @@ static struct urb *request_single_step_set_feature_urb(
52232 urb->transfer_flags = URB_DIR_IN;
52233 usb_get_urb(urb);
52234 atomic_inc(&urb->use_count);
52235- atomic_inc(&urb->dev->urbnum);
52236+ atomic_inc_unchecked(&urb->dev->urbnum);
52237 urb->setup_dma = dma_map_single(
52238 hcd->self.controller,
52239 urb->setup_packet,
52240@@ -847,7 +847,7 @@ static int ehset_single_step_set_feature(struct usb_hcd *hcd, int port)
52241 urb->status = -EINPROGRESS;
52242 usb_get_urb(urb);
52243 atomic_inc(&urb->use_count);
52244- atomic_inc(&urb->dev->urbnum);
52245+ atomic_inc_unchecked(&urb->dev->urbnum);
52246 retval = submit_single_step_set_feature(hcd, urb, 0);
52247 if (!retval && !wait_for_completion_timeout(&done,
52248 msecs_to_jiffies(2000))) {
52249diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c
52250index ba6a5d6..f88f7f3 100644
52251--- a/drivers/usb/misc/appledisplay.c
52252+++ b/drivers/usb/misc/appledisplay.c
52253@@ -83,7 +83,7 @@ struct appledisplay {
52254 spinlock_t lock;
52255 };
52256
52257-static atomic_t count_displays = ATOMIC_INIT(0);
52258+static atomic_unchecked_t count_displays = ATOMIC_INIT(0);
52259 static struct workqueue_struct *wq;
52260
52261 static void appledisplay_complete(struct urb *urb)
52262@@ -281,7 +281,7 @@ static int appledisplay_probe(struct usb_interface *iface,
52263
52264 /* Register backlight device */
52265 snprintf(bl_name, sizeof(bl_name), "appledisplay%d",
52266- atomic_inc_return(&count_displays) - 1);
52267+ atomic_inc_return_unchecked(&count_displays) - 1);
52268 memset(&props, 0, sizeof(struct backlight_properties));
52269 props.type = BACKLIGHT_RAW;
52270 props.max_brightness = 0xff;
52271diff --git a/drivers/usb/serial/console.c b/drivers/usb/serial/console.c
52272index 8d7fc48..01c4986 100644
52273--- a/drivers/usb/serial/console.c
52274+++ b/drivers/usb/serial/console.c
52275@@ -123,7 +123,7 @@ static int usb_console_setup(struct console *co, char *options)
52276
52277 info->port = port;
52278
52279- ++port->port.count;
52280+ atomic_inc(&port->port.count);
52281 if (!test_bit(ASYNCB_INITIALIZED, &port->port.flags)) {
52282 if (serial->type->set_termios) {
52283 /*
52284@@ -167,7 +167,7 @@ static int usb_console_setup(struct console *co, char *options)
52285 }
52286 /* Now that any required fake tty operations are completed restore
52287 * the tty port count */
52288- --port->port.count;
52289+ atomic_dec(&port->port.count);
52290 /* The console is special in terms of closing the device so
52291 * indicate this port is now acting as a system console. */
52292 port->port.console = 1;
52293@@ -180,7 +180,7 @@ static int usb_console_setup(struct console *co, char *options)
52294 free_tty:
52295 kfree(tty);
52296 reset_open_count:
52297- port->port.count = 0;
52298+ atomic_set(&port->port.count, 0);
52299 usb_autopm_put_interface(serial->interface);
52300 error_get_interface:
52301 usb_serial_put(serial);
52302@@ -191,7 +191,7 @@ static int usb_console_setup(struct console *co, char *options)
52303 static void usb_console_write(struct console *co,
52304 const char *buf, unsigned count)
52305 {
52306- static struct usbcons_info *info = &usbcons_info;
52307+ struct usbcons_info *info = &usbcons_info;
52308 struct usb_serial_port *port = info->port;
52309 struct usb_serial *serial;
52310 int retval = -ENODEV;
52311diff --git a/drivers/usb/storage/usb.h b/drivers/usb/storage/usb.h
52312index 307e339..6aa97cb 100644
52313--- a/drivers/usb/storage/usb.h
52314+++ b/drivers/usb/storage/usb.h
52315@@ -63,7 +63,7 @@ struct us_unusual_dev {
52316 __u8 useProtocol;
52317 __u8 useTransport;
52318 int (*initFunction)(struct us_data *);
52319-};
52320+} __do_const;
52321
52322
52323 /* Dynamic bitflag definitions (us->dflags): used in set_bit() etc. */
52324diff --git a/drivers/usb/wusbcore/wa-hc.h b/drivers/usb/wusbcore/wa-hc.h
52325index f2a8d29..7bc3fe7 100644
52326--- a/drivers/usb/wusbcore/wa-hc.h
52327+++ b/drivers/usb/wusbcore/wa-hc.h
52328@@ -240,7 +240,7 @@ struct wahc {
52329 spinlock_t xfer_list_lock;
52330 struct work_struct xfer_enqueue_work;
52331 struct work_struct xfer_error_work;
52332- atomic_t xfer_id_count;
52333+ atomic_unchecked_t xfer_id_count;
52334
52335 kernel_ulong_t quirks;
52336 };
52337@@ -305,7 +305,7 @@ static inline void wa_init(struct wahc *wa)
52338 INIT_WORK(&wa->xfer_enqueue_work, wa_urb_enqueue_run);
52339 INIT_WORK(&wa->xfer_error_work, wa_process_errored_transfers_run);
52340 wa->dto_in_use = 0;
52341- atomic_set(&wa->xfer_id_count, 1);
52342+ atomic_set_unchecked(&wa->xfer_id_count, 1);
52343 /* init the buf in URBs */
52344 for (index = 0; index < WA_MAX_BUF_IN_URBS; ++index)
52345 usb_init_urb(&(wa->buf_in_urbs[index]));
52346diff --git a/drivers/usb/wusbcore/wa-xfer.c b/drivers/usb/wusbcore/wa-xfer.c
52347index 3e2e4ed..060c9b8 100644
52348--- a/drivers/usb/wusbcore/wa-xfer.c
52349+++ b/drivers/usb/wusbcore/wa-xfer.c
52350@@ -314,7 +314,7 @@ static void wa_xfer_completion(struct wa_xfer *xfer)
52351 */
52352 static void wa_xfer_id_init(struct wa_xfer *xfer)
52353 {
52354- xfer->id = atomic_add_return(1, &xfer->wa->xfer_id_count);
52355+ xfer->id = atomic_add_return_unchecked(1, &xfer->wa->xfer_id_count);
52356 }
52357
52358 /* Return the xfer's ID. */
52359diff --git a/drivers/vfio/vfio.c b/drivers/vfio/vfio.c
52360index 512f479..7e041d0 100644
52361--- a/drivers/vfio/vfio.c
52362+++ b/drivers/vfio/vfio.c
52363@@ -487,7 +487,7 @@ static int vfio_group_nb_add_dev(struct vfio_group *group, struct device *dev)
52364 return 0;
52365
52366 /* TODO Prevent device auto probing */
52367- WARN("Device %s added to live group %d!\n", dev_name(dev),
52368+ WARN(1, "Device %s added to live group %d!\n", dev_name(dev),
52369 iommu_group_id(group->iommu_group));
52370
52371 return 0;
52372diff --git a/drivers/vhost/vringh.c b/drivers/vhost/vringh.c
52373index 5174eba..451e6bc 100644
52374--- a/drivers/vhost/vringh.c
52375+++ b/drivers/vhost/vringh.c
52376@@ -530,17 +530,17 @@ static inline void __vringh_notify_disable(struct vringh *vrh,
52377 /* Userspace access helpers: in this case, addresses are really userspace. */
52378 static inline int getu16_user(u16 *val, const u16 *p)
52379 {
52380- return get_user(*val, (__force u16 __user *)p);
52381+ return get_user(*val, (u16 __force_user *)p);
52382 }
52383
52384 static inline int putu16_user(u16 *p, u16 val)
52385 {
52386- return put_user(val, (__force u16 __user *)p);
52387+ return put_user(val, (u16 __force_user *)p);
52388 }
52389
52390 static inline int copydesc_user(void *dst, const void *src, size_t len)
52391 {
52392- return copy_from_user(dst, (__force void __user *)src, len) ?
52393+ return copy_from_user(dst, (void __force_user *)src, len) ?
52394 -EFAULT : 0;
52395 }
52396
52397@@ -548,19 +548,19 @@ static inline int putused_user(struct vring_used_elem *dst,
52398 const struct vring_used_elem *src,
52399 unsigned int num)
52400 {
52401- return copy_to_user((__force void __user *)dst, src,
52402+ return copy_to_user((void __force_user *)dst, src,
52403 sizeof(*dst) * num) ? -EFAULT : 0;
52404 }
52405
52406 static inline int xfer_from_user(void *src, void *dst, size_t len)
52407 {
52408- return copy_from_user(dst, (__force void __user *)src, len) ?
52409+ return copy_from_user(dst, (void __force_user *)src, len) ?
52410 -EFAULT : 0;
52411 }
52412
52413 static inline int xfer_to_user(void *dst, void *src, size_t len)
52414 {
52415- return copy_to_user((__force void __user *)dst, src, len) ?
52416+ return copy_to_user((void __force_user *)dst, src, len) ?
52417 -EFAULT : 0;
52418 }
52419
52420@@ -596,9 +596,9 @@ int vringh_init_user(struct vringh *vrh, u32 features,
52421 vrh->last_used_idx = 0;
52422 vrh->vring.num = num;
52423 /* vring expects kernel addresses, but only used via accessors. */
52424- vrh->vring.desc = (__force struct vring_desc *)desc;
52425- vrh->vring.avail = (__force struct vring_avail *)avail;
52426- vrh->vring.used = (__force struct vring_used *)used;
52427+ vrh->vring.desc = (__force_kernel struct vring_desc *)desc;
52428+ vrh->vring.avail = (__force_kernel struct vring_avail *)avail;
52429+ vrh->vring.used = (__force_kernel struct vring_used *)used;
52430 return 0;
52431 }
52432 EXPORT_SYMBOL(vringh_init_user);
52433@@ -800,7 +800,7 @@ static inline int getu16_kern(u16 *val, const u16 *p)
52434
52435 static inline int putu16_kern(u16 *p, u16 val)
52436 {
52437- ACCESS_ONCE(*p) = val;
52438+ ACCESS_ONCE_RW(*p) = val;
52439 return 0;
52440 }
52441
52442diff --git a/drivers/video/backlight/kb3886_bl.c b/drivers/video/backlight/kb3886_bl.c
52443index 84a110a..96312c3 100644
52444--- a/drivers/video/backlight/kb3886_bl.c
52445+++ b/drivers/video/backlight/kb3886_bl.c
52446@@ -78,7 +78,7 @@ static struct kb3886bl_machinfo *bl_machinfo;
52447 static unsigned long kb3886bl_flags;
52448 #define KB3886BL_SUSPENDED 0x01
52449
52450-static struct dmi_system_id kb3886bl_device_table[] __initdata = {
52451+static const struct dmi_system_id kb3886bl_device_table[] __initconst = {
52452 {
52453 .ident = "Sahara Touch-iT",
52454 .matches = {
52455diff --git a/drivers/video/fbdev/arcfb.c b/drivers/video/fbdev/arcfb.c
52456index 1b0b233..6f34c2c 100644
52457--- a/drivers/video/fbdev/arcfb.c
52458+++ b/drivers/video/fbdev/arcfb.c
52459@@ -458,7 +458,7 @@ static ssize_t arcfb_write(struct fb_info *info, const char __user *buf,
52460 return -ENOSPC;
52461
52462 err = 0;
52463- if ((count + p) > fbmemlength) {
52464+ if (count > (fbmemlength - p)) {
52465 count = fbmemlength - p;
52466 err = -ENOSPC;
52467 }
52468diff --git a/drivers/video/fbdev/aty/aty128fb.c b/drivers/video/fbdev/aty/aty128fb.c
52469index 52108be..c7c110d 100644
52470--- a/drivers/video/fbdev/aty/aty128fb.c
52471+++ b/drivers/video/fbdev/aty/aty128fb.c
52472@@ -149,7 +149,7 @@ enum {
52473 };
52474
52475 /* Must match above enum */
52476-static char * const r128_family[] = {
52477+static const char * const r128_family[] = {
52478 "AGP",
52479 "PCI",
52480 "PRO AGP",
52481diff --git a/drivers/video/fbdev/aty/atyfb_base.c b/drivers/video/fbdev/aty/atyfb_base.c
52482index c3d0074..0b9077e 100644
52483--- a/drivers/video/fbdev/aty/atyfb_base.c
52484+++ b/drivers/video/fbdev/aty/atyfb_base.c
52485@@ -1326,10 +1326,14 @@ static int atyfb_set_par(struct fb_info *info)
52486 par->accel_flags = var->accel_flags; /* hack */
52487
52488 if (var->accel_flags) {
52489- info->fbops->fb_sync = atyfb_sync;
52490+ pax_open_kernel();
52491+ *(void **)&info->fbops->fb_sync = atyfb_sync;
52492+ pax_close_kernel();
52493 info->flags &= ~FBINFO_HWACCEL_DISABLED;
52494 } else {
52495- info->fbops->fb_sync = NULL;
52496+ pax_open_kernel();
52497+ *(void **)&info->fbops->fb_sync = NULL;
52498+ pax_close_kernel();
52499 info->flags |= FBINFO_HWACCEL_DISABLED;
52500 }
52501
52502diff --git a/drivers/video/fbdev/aty/mach64_cursor.c b/drivers/video/fbdev/aty/mach64_cursor.c
52503index 2fa0317..4983f2a 100644
52504--- a/drivers/video/fbdev/aty/mach64_cursor.c
52505+++ b/drivers/video/fbdev/aty/mach64_cursor.c
52506@@ -8,6 +8,7 @@
52507 #include "../core/fb_draw.h"
52508
52509 #include <asm/io.h>
52510+#include <asm/pgtable.h>
52511
52512 #ifdef __sparc__
52513 #include <asm/fbio.h>
52514@@ -218,7 +219,9 @@ int aty_init_cursor(struct fb_info *info)
52515 info->sprite.buf_align = 16; /* and 64 lines tall. */
52516 info->sprite.flags = FB_PIXMAP_IO;
52517
52518- info->fbops->fb_cursor = atyfb_cursor;
52519+ pax_open_kernel();
52520+ *(void **)&info->fbops->fb_cursor = atyfb_cursor;
52521+ pax_close_kernel();
52522
52523 return 0;
52524 }
52525diff --git a/drivers/video/fbdev/core/fb_defio.c b/drivers/video/fbdev/core/fb_defio.c
52526index 900aa4e..6d49418 100644
52527--- a/drivers/video/fbdev/core/fb_defio.c
52528+++ b/drivers/video/fbdev/core/fb_defio.c
52529@@ -206,7 +206,9 @@ void fb_deferred_io_init(struct fb_info *info)
52530
52531 BUG_ON(!fbdefio);
52532 mutex_init(&fbdefio->lock);
52533- info->fbops->fb_mmap = fb_deferred_io_mmap;
52534+ pax_open_kernel();
52535+ *(void **)&info->fbops->fb_mmap = fb_deferred_io_mmap;
52536+ pax_close_kernel();
52537 INIT_DELAYED_WORK(&info->deferred_work, fb_deferred_io_work);
52538 INIT_LIST_HEAD(&fbdefio->pagelist);
52539 if (fbdefio->delay == 0) /* set a default of 1 s */
52540@@ -237,7 +239,7 @@ void fb_deferred_io_cleanup(struct fb_info *info)
52541 page->mapping = NULL;
52542 }
52543
52544- info->fbops->fb_mmap = NULL;
52545+ *(void **)&info->fbops->fb_mmap = NULL;
52546 mutex_destroy(&fbdefio->lock);
52547 }
52548 EXPORT_SYMBOL_GPL(fb_deferred_io_cleanup);
52549diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
52550index b6d5008..5bca7bf 100644
52551--- a/drivers/video/fbdev/core/fbmem.c
52552+++ b/drivers/video/fbdev/core/fbmem.c
52553@@ -433,7 +433,7 @@ static void fb_do_show_logo(struct fb_info *info, struct fb_image *image,
52554 image->dx += image->width + 8;
52555 }
52556 } else if (rotate == FB_ROTATE_UD) {
52557- for (x = 0; x < num && image->dx >= 0; x++) {
52558+ for (x = 0; x < num && (__s32)image->dx >= 0; x++) {
52559 info->fbops->fb_imageblit(info, image);
52560 image->dx -= image->width + 8;
52561 }
52562@@ -445,7 +445,7 @@ static void fb_do_show_logo(struct fb_info *info, struct fb_image *image,
52563 image->dy += image->height + 8;
52564 }
52565 } else if (rotate == FB_ROTATE_CCW) {
52566- for (x = 0; x < num && image->dy >= 0; x++) {
52567+ for (x = 0; x < num && (__s32)image->dy >= 0; x++) {
52568 info->fbops->fb_imageblit(info, image);
52569 image->dy -= image->height + 8;
52570 }
52571@@ -1179,7 +1179,7 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd,
52572 return -EFAULT;
52573 if (con2fb.console < 1 || con2fb.console > MAX_NR_CONSOLES)
52574 return -EINVAL;
52575- if (con2fb.framebuffer < 0 || con2fb.framebuffer >= FB_MAX)
52576+ if (con2fb.framebuffer >= FB_MAX)
52577 return -EINVAL;
52578 if (!registered_fb[con2fb.framebuffer])
52579 request_module("fb%d", con2fb.framebuffer);
52580@@ -1300,7 +1300,7 @@ static int do_fscreeninfo_to_user(struct fb_fix_screeninfo *fix,
52581 __u32 data;
52582 int err;
52583
52584- err = copy_to_user(&fix32->id, &fix->id, sizeof(fix32->id));
52585+ err = copy_to_user(fix32->id, &fix->id, sizeof(fix32->id));
52586
52587 data = (__u32) (unsigned long) fix->smem_start;
52588 err |= put_user(data, &fix32->smem_start);
52589diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c
52590index e23392e..8a77540 100644
52591--- a/drivers/video/fbdev/hyperv_fb.c
52592+++ b/drivers/video/fbdev/hyperv_fb.c
52593@@ -235,7 +235,7 @@ static uint screen_fb_size;
52594 static inline int synthvid_send(struct hv_device *hdev,
52595 struct synthvid_msg *msg)
52596 {
52597- static atomic64_t request_id = ATOMIC64_INIT(0);
52598+ static atomic64_unchecked_t request_id = ATOMIC64_INIT(0);
52599 int ret;
52600
52601 msg->pipe_hdr.type = PIPE_MSG_DATA;
52602@@ -243,7 +243,7 @@ static inline int synthvid_send(struct hv_device *hdev,
52603
52604 ret = vmbus_sendpacket(hdev->channel, msg,
52605 msg->vid_hdr.size + sizeof(struct pipe_msg_hdr),
52606- atomic64_inc_return(&request_id),
52607+ atomic64_inc_return_unchecked(&request_id),
52608 VM_PKT_DATA_INBAND, 0);
52609
52610 if (ret)
52611diff --git a/drivers/video/fbdev/i810/i810_accel.c b/drivers/video/fbdev/i810/i810_accel.c
52612index 7672d2e..b56437f 100644
52613--- a/drivers/video/fbdev/i810/i810_accel.c
52614+++ b/drivers/video/fbdev/i810/i810_accel.c
52615@@ -73,6 +73,7 @@ static inline int wait_for_space(struct fb_info *info, u32 space)
52616 }
52617 }
52618 printk("ringbuffer lockup!!!\n");
52619+ printk("head:%u tail:%u iring.size:%u space:%u\n", head, tail, par->iring.size, space);
52620 i810_report_error(mmio);
52621 par->dev_flags |= LOCKUP;
52622 info->pixmap.scan_align = 1;
52623diff --git a/drivers/video/fbdev/matrox/matroxfb_DAC1064.c b/drivers/video/fbdev/matrox/matroxfb_DAC1064.c
52624index a01147f..5d896f8 100644
52625--- a/drivers/video/fbdev/matrox/matroxfb_DAC1064.c
52626+++ b/drivers/video/fbdev/matrox/matroxfb_DAC1064.c
52627@@ -1088,14 +1088,20 @@ static void MGAG100_restore(struct matrox_fb_info *minfo)
52628
52629 #ifdef CONFIG_FB_MATROX_MYSTIQUE
52630 struct matrox_switch matrox_mystique = {
52631- MGA1064_preinit, MGA1064_reset, MGA1064_init, MGA1064_restore,
52632+ .preinit = MGA1064_preinit,
52633+ .reset = MGA1064_reset,
52634+ .init = MGA1064_init,
52635+ .restore = MGA1064_restore,
52636 };
52637 EXPORT_SYMBOL(matrox_mystique);
52638 #endif
52639
52640 #ifdef CONFIG_FB_MATROX_G
52641 struct matrox_switch matrox_G100 = {
52642- MGAG100_preinit, MGAG100_reset, MGAG100_init, MGAG100_restore,
52643+ .preinit = MGAG100_preinit,
52644+ .reset = MGAG100_reset,
52645+ .init = MGAG100_init,
52646+ .restore = MGAG100_restore,
52647 };
52648 EXPORT_SYMBOL(matrox_G100);
52649 #endif
52650diff --git a/drivers/video/fbdev/matrox/matroxfb_Ti3026.c b/drivers/video/fbdev/matrox/matroxfb_Ti3026.c
52651index 195ad7c..09743fc 100644
52652--- a/drivers/video/fbdev/matrox/matroxfb_Ti3026.c
52653+++ b/drivers/video/fbdev/matrox/matroxfb_Ti3026.c
52654@@ -738,7 +738,10 @@ static int Ti3026_preinit(struct matrox_fb_info *minfo)
52655 }
52656
52657 struct matrox_switch matrox_millennium = {
52658- Ti3026_preinit, Ti3026_reset, Ti3026_init, Ti3026_restore
52659+ .preinit = Ti3026_preinit,
52660+ .reset = Ti3026_reset,
52661+ .init = Ti3026_init,
52662+ .restore = Ti3026_restore
52663 };
52664 EXPORT_SYMBOL(matrox_millennium);
52665 #endif
52666diff --git a/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c b/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c
52667index fe92eed..106e085 100644
52668--- a/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c
52669+++ b/drivers/video/fbdev/mb862xx/mb862xxfb_accel.c
52670@@ -312,14 +312,18 @@ void mb862xxfb_init_accel(struct fb_info *info, int xres)
52671 struct mb862xxfb_par *par = info->par;
52672
52673 if (info->var.bits_per_pixel == 32) {
52674- info->fbops->fb_fillrect = cfb_fillrect;
52675- info->fbops->fb_copyarea = cfb_copyarea;
52676- info->fbops->fb_imageblit = cfb_imageblit;
52677+ pax_open_kernel();
52678+ *(void **)&info->fbops->fb_fillrect = cfb_fillrect;
52679+ *(void **)&info->fbops->fb_copyarea = cfb_copyarea;
52680+ *(void **)&info->fbops->fb_imageblit = cfb_imageblit;
52681+ pax_close_kernel();
52682 } else {
52683 outreg(disp, GC_L0EM, 3);
52684- info->fbops->fb_fillrect = mb86290fb_fillrect;
52685- info->fbops->fb_copyarea = mb86290fb_copyarea;
52686- info->fbops->fb_imageblit = mb86290fb_imageblit;
52687+ pax_open_kernel();
52688+ *(void **)&info->fbops->fb_fillrect = mb86290fb_fillrect;
52689+ *(void **)&info->fbops->fb_copyarea = mb86290fb_copyarea;
52690+ *(void **)&info->fbops->fb_imageblit = mb86290fb_imageblit;
52691+ pax_close_kernel();
52692 }
52693 outreg(draw, GDC_REG_DRAW_BASE, 0);
52694 outreg(draw, GDC_REG_MODE_MISC, 0x8000);
52695diff --git a/drivers/video/fbdev/nvidia/nvidia.c b/drivers/video/fbdev/nvidia/nvidia.c
52696index def0412..fed6529 100644
52697--- a/drivers/video/fbdev/nvidia/nvidia.c
52698+++ b/drivers/video/fbdev/nvidia/nvidia.c
52699@@ -669,19 +669,23 @@ static int nvidiafb_set_par(struct fb_info *info)
52700 info->fix.line_length = (info->var.xres_virtual *
52701 info->var.bits_per_pixel) >> 3;
52702 if (info->var.accel_flags) {
52703- info->fbops->fb_imageblit = nvidiafb_imageblit;
52704- info->fbops->fb_fillrect = nvidiafb_fillrect;
52705- info->fbops->fb_copyarea = nvidiafb_copyarea;
52706- info->fbops->fb_sync = nvidiafb_sync;
52707+ pax_open_kernel();
52708+ *(void **)&info->fbops->fb_imageblit = nvidiafb_imageblit;
52709+ *(void **)&info->fbops->fb_fillrect = nvidiafb_fillrect;
52710+ *(void **)&info->fbops->fb_copyarea = nvidiafb_copyarea;
52711+ *(void **)&info->fbops->fb_sync = nvidiafb_sync;
52712+ pax_close_kernel();
52713 info->pixmap.scan_align = 4;
52714 info->flags &= ~FBINFO_HWACCEL_DISABLED;
52715 info->flags |= FBINFO_READS_FAST;
52716 NVResetGraphics(info);
52717 } else {
52718- info->fbops->fb_imageblit = cfb_imageblit;
52719- info->fbops->fb_fillrect = cfb_fillrect;
52720- info->fbops->fb_copyarea = cfb_copyarea;
52721- info->fbops->fb_sync = NULL;
52722+ pax_open_kernel();
52723+ *(void **)&info->fbops->fb_imageblit = cfb_imageblit;
52724+ *(void **)&info->fbops->fb_fillrect = cfb_fillrect;
52725+ *(void **)&info->fbops->fb_copyarea = cfb_copyarea;
52726+ *(void **)&info->fbops->fb_sync = NULL;
52727+ pax_close_kernel();
52728 info->pixmap.scan_align = 1;
52729 info->flags |= FBINFO_HWACCEL_DISABLED;
52730 info->flags &= ~FBINFO_READS_FAST;
52731@@ -1173,8 +1177,11 @@ static int nvidia_set_fbinfo(struct fb_info *info)
52732 info->pixmap.size = 8 * 1024;
52733 info->pixmap.flags = FB_PIXMAP_SYSTEM;
52734
52735- if (!hwcur)
52736- info->fbops->fb_cursor = NULL;
52737+ if (!hwcur) {
52738+ pax_open_kernel();
52739+ *(void **)&info->fbops->fb_cursor = NULL;
52740+ pax_close_kernel();
52741+ }
52742
52743 info->var.accel_flags = (!noaccel);
52744
52745diff --git a/drivers/video/fbdev/omap2/dss/display.c b/drivers/video/fbdev/omap2/dss/display.c
52746index 2412a0d..294215b 100644
52747--- a/drivers/video/fbdev/omap2/dss/display.c
52748+++ b/drivers/video/fbdev/omap2/dss/display.c
52749@@ -161,12 +161,14 @@ int omapdss_register_display(struct omap_dss_device *dssdev)
52750 if (dssdev->name == NULL)
52751 dssdev->name = dssdev->alias;
52752
52753+ pax_open_kernel();
52754 if (drv && drv->get_resolution == NULL)
52755- drv->get_resolution = omapdss_default_get_resolution;
52756+ *(void **)&drv->get_resolution = omapdss_default_get_resolution;
52757 if (drv && drv->get_recommended_bpp == NULL)
52758- drv->get_recommended_bpp = omapdss_default_get_recommended_bpp;
52759+ *(void **)&drv->get_recommended_bpp = omapdss_default_get_recommended_bpp;
52760 if (drv && drv->get_timings == NULL)
52761- drv->get_timings = omapdss_default_get_timings;
52762+ *(void **)&drv->get_timings = omapdss_default_get_timings;
52763+ pax_close_kernel();
52764
52765 mutex_lock(&panel_list_mutex);
52766 list_add_tail(&dssdev->panel_list, &panel_list);
52767diff --git a/drivers/video/fbdev/s1d13xxxfb.c b/drivers/video/fbdev/s1d13xxxfb.c
52768index 83433cb..71e9b98 100644
52769--- a/drivers/video/fbdev/s1d13xxxfb.c
52770+++ b/drivers/video/fbdev/s1d13xxxfb.c
52771@@ -881,8 +881,10 @@ static int s1d13xxxfb_probe(struct platform_device *pdev)
52772
52773 switch(prod_id) {
52774 case S1D13506_PROD_ID: /* activate acceleration */
52775- s1d13xxxfb_fbops.fb_fillrect = s1d13xxxfb_bitblt_solidfill;
52776- s1d13xxxfb_fbops.fb_copyarea = s1d13xxxfb_bitblt_copyarea;
52777+ pax_open_kernel();
52778+ *(void **)&s1d13xxxfb_fbops.fb_fillrect = s1d13xxxfb_bitblt_solidfill;
52779+ *(void **)&s1d13xxxfb_fbops.fb_copyarea = s1d13xxxfb_bitblt_copyarea;
52780+ pax_close_kernel();
52781 info->flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
52782 FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_COPYAREA;
52783 break;
52784diff --git a/drivers/video/fbdev/sh_mobile_lcdcfb.c b/drivers/video/fbdev/sh_mobile_lcdcfb.c
52785index 2bcc84a..29dd1ea 100644
52786--- a/drivers/video/fbdev/sh_mobile_lcdcfb.c
52787+++ b/drivers/video/fbdev/sh_mobile_lcdcfb.c
52788@@ -439,9 +439,9 @@ static unsigned long lcdc_sys_read_data(void *handle)
52789 }
52790
52791 static struct sh_mobile_lcdc_sys_bus_ops sh_mobile_lcdc_sys_bus_ops = {
52792- lcdc_sys_write_index,
52793- lcdc_sys_write_data,
52794- lcdc_sys_read_data,
52795+ .write_index = lcdc_sys_write_index,
52796+ .write_data = lcdc_sys_write_data,
52797+ .read_data = lcdc_sys_read_data,
52798 };
52799
52800 static int sh_mobile_lcdc_sginit(struct fb_info *info,
52801diff --git a/drivers/video/fbdev/smscufx.c b/drivers/video/fbdev/smscufx.c
52802index d513ed6..90b0de9 100644
52803--- a/drivers/video/fbdev/smscufx.c
52804+++ b/drivers/video/fbdev/smscufx.c
52805@@ -1175,7 +1175,9 @@ static int ufx_ops_release(struct fb_info *info, int user)
52806 fb_deferred_io_cleanup(info);
52807 kfree(info->fbdefio);
52808 info->fbdefio = NULL;
52809- info->fbops->fb_mmap = ufx_ops_mmap;
52810+ pax_open_kernel();
52811+ *(void **)&info->fbops->fb_mmap = ufx_ops_mmap;
52812+ pax_close_kernel();
52813 }
52814
52815 pr_debug("released /dev/fb%d user=%d count=%d",
52816diff --git a/drivers/video/fbdev/udlfb.c b/drivers/video/fbdev/udlfb.c
52817index 77b890e..458e666 100644
52818--- a/drivers/video/fbdev/udlfb.c
52819+++ b/drivers/video/fbdev/udlfb.c
52820@@ -623,11 +623,11 @@ static int dlfb_handle_damage(struct dlfb_data *dev, int x, int y,
52821 dlfb_urb_completion(urb);
52822
52823 error:
52824- atomic_add(bytes_sent, &dev->bytes_sent);
52825- atomic_add(bytes_identical, &dev->bytes_identical);
52826- atomic_add(width*height*2, &dev->bytes_rendered);
52827+ atomic_add_unchecked(bytes_sent, &dev->bytes_sent);
52828+ atomic_add_unchecked(bytes_identical, &dev->bytes_identical);
52829+ atomic_add_unchecked(width*height*2, &dev->bytes_rendered);
52830 end_cycles = get_cycles();
52831- atomic_add(((unsigned int) ((end_cycles - start_cycles)
52832+ atomic_add_unchecked(((unsigned int) ((end_cycles - start_cycles)
52833 >> 10)), /* Kcycles */
52834 &dev->cpu_kcycles_used);
52835
52836@@ -748,11 +748,11 @@ static void dlfb_dpy_deferred_io(struct fb_info *info,
52837 dlfb_urb_completion(urb);
52838
52839 error:
52840- atomic_add(bytes_sent, &dev->bytes_sent);
52841- atomic_add(bytes_identical, &dev->bytes_identical);
52842- atomic_add(bytes_rendered, &dev->bytes_rendered);
52843+ atomic_add_unchecked(bytes_sent, &dev->bytes_sent);
52844+ atomic_add_unchecked(bytes_identical, &dev->bytes_identical);
52845+ atomic_add_unchecked(bytes_rendered, &dev->bytes_rendered);
52846 end_cycles = get_cycles();
52847- atomic_add(((unsigned int) ((end_cycles - start_cycles)
52848+ atomic_add_unchecked(((unsigned int) ((end_cycles - start_cycles)
52849 >> 10)), /* Kcycles */
52850 &dev->cpu_kcycles_used);
52851 }
52852@@ -993,7 +993,9 @@ static int dlfb_ops_release(struct fb_info *info, int user)
52853 fb_deferred_io_cleanup(info);
52854 kfree(info->fbdefio);
52855 info->fbdefio = NULL;
52856- info->fbops->fb_mmap = dlfb_ops_mmap;
52857+ pax_open_kernel();
52858+ *(void **)&info->fbops->fb_mmap = dlfb_ops_mmap;
52859+ pax_close_kernel();
52860 }
52861
52862 pr_warn("released /dev/fb%d user=%d count=%d\n",
52863@@ -1376,7 +1378,7 @@ static ssize_t metrics_bytes_rendered_show(struct device *fbdev,
52864 struct fb_info *fb_info = dev_get_drvdata(fbdev);
52865 struct dlfb_data *dev = fb_info->par;
52866 return snprintf(buf, PAGE_SIZE, "%u\n",
52867- atomic_read(&dev->bytes_rendered));
52868+ atomic_read_unchecked(&dev->bytes_rendered));
52869 }
52870
52871 static ssize_t metrics_bytes_identical_show(struct device *fbdev,
52872@@ -1384,7 +1386,7 @@ static ssize_t metrics_bytes_identical_show(struct device *fbdev,
52873 struct fb_info *fb_info = dev_get_drvdata(fbdev);
52874 struct dlfb_data *dev = fb_info->par;
52875 return snprintf(buf, PAGE_SIZE, "%u\n",
52876- atomic_read(&dev->bytes_identical));
52877+ atomic_read_unchecked(&dev->bytes_identical));
52878 }
52879
52880 static ssize_t metrics_bytes_sent_show(struct device *fbdev,
52881@@ -1392,7 +1394,7 @@ static ssize_t metrics_bytes_sent_show(struct device *fbdev,
52882 struct fb_info *fb_info = dev_get_drvdata(fbdev);
52883 struct dlfb_data *dev = fb_info->par;
52884 return snprintf(buf, PAGE_SIZE, "%u\n",
52885- atomic_read(&dev->bytes_sent));
52886+ atomic_read_unchecked(&dev->bytes_sent));
52887 }
52888
52889 static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev,
52890@@ -1400,7 +1402,7 @@ static ssize_t metrics_cpu_kcycles_used_show(struct device *fbdev,
52891 struct fb_info *fb_info = dev_get_drvdata(fbdev);
52892 struct dlfb_data *dev = fb_info->par;
52893 return snprintf(buf, PAGE_SIZE, "%u\n",
52894- atomic_read(&dev->cpu_kcycles_used));
52895+ atomic_read_unchecked(&dev->cpu_kcycles_used));
52896 }
52897
52898 static ssize_t edid_show(
52899@@ -1460,10 +1462,10 @@ static ssize_t metrics_reset_store(struct device *fbdev,
52900 struct fb_info *fb_info = dev_get_drvdata(fbdev);
52901 struct dlfb_data *dev = fb_info->par;
52902
52903- atomic_set(&dev->bytes_rendered, 0);
52904- atomic_set(&dev->bytes_identical, 0);
52905- atomic_set(&dev->bytes_sent, 0);
52906- atomic_set(&dev->cpu_kcycles_used, 0);
52907+ atomic_set_unchecked(&dev->bytes_rendered, 0);
52908+ atomic_set_unchecked(&dev->bytes_identical, 0);
52909+ atomic_set_unchecked(&dev->bytes_sent, 0);
52910+ atomic_set_unchecked(&dev->cpu_kcycles_used, 0);
52911
52912 return count;
52913 }
52914diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c
52915index 509d452..7c9d2de 100644
52916--- a/drivers/video/fbdev/uvesafb.c
52917+++ b/drivers/video/fbdev/uvesafb.c
52918@@ -19,6 +19,7 @@
52919 #include <linux/io.h>
52920 #include <linux/mutex.h>
52921 #include <linux/slab.h>
52922+#include <linux/moduleloader.h>
52923 #include <video/edid.h>
52924 #include <video/uvesafb.h>
52925 #ifdef CONFIG_X86
52926@@ -565,10 +566,32 @@ static int uvesafb_vbe_getpmi(struct uvesafb_ktask *task,
52927 if ((task->t.regs.eax & 0xffff) != 0x4f || task->t.regs.es < 0xc000) {
52928 par->pmi_setpal = par->ypan = 0;
52929 } else {
52930+
52931+#ifdef CONFIG_PAX_KERNEXEC
52932+#ifdef CONFIG_MODULES
52933+ par->pmi_code = module_alloc_exec((u16)task->t.regs.ecx);
52934+#endif
52935+ if (!par->pmi_code) {
52936+ par->pmi_setpal = par->ypan = 0;
52937+ return 0;
52938+ }
52939+#endif
52940+
52941 par->pmi_base = (u16 *)phys_to_virt(((u32)task->t.regs.es << 4)
52942 + task->t.regs.edi);
52943+
52944+#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
52945+ pax_open_kernel();
52946+ memcpy(par->pmi_code, par->pmi_base, (u16)task->t.regs.ecx);
52947+ pax_close_kernel();
52948+
52949+ par->pmi_start = ktva_ktla(par->pmi_code + par->pmi_base[1]);
52950+ par->pmi_pal = ktva_ktla(par->pmi_code + par->pmi_base[2]);
52951+#else
52952 par->pmi_start = (u8 *)par->pmi_base + par->pmi_base[1];
52953 par->pmi_pal = (u8 *)par->pmi_base + par->pmi_base[2];
52954+#endif
52955+
52956 printk(KERN_INFO "uvesafb: protected mode interface info at "
52957 "%04x:%04x\n",
52958 (u16)task->t.regs.es, (u16)task->t.regs.edi);
52959@@ -813,13 +836,14 @@ static int uvesafb_vbe_init(struct fb_info *info)
52960 par->ypan = ypan;
52961
52962 if (par->pmi_setpal || par->ypan) {
52963+#if !defined(CONFIG_MODULES) || !defined(CONFIG_PAX_KERNEXEC)
52964 if (__supported_pte_mask & _PAGE_NX) {
52965 par->pmi_setpal = par->ypan = 0;
52966 printk(KERN_WARNING "uvesafb: NX protection is active, "
52967 "better not use the PMI.\n");
52968- } else {
52969+ } else
52970+#endif
52971 uvesafb_vbe_getpmi(task, par);
52972- }
52973 }
52974 #else
52975 /* The protected mode interface is not available on non-x86. */
52976@@ -1453,8 +1477,11 @@ static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
52977 info->fix.ywrapstep = (par->ypan > 1) ? 1 : 0;
52978
52979 /* Disable blanking if the user requested so. */
52980- if (!blank)
52981- info->fbops->fb_blank = NULL;
52982+ if (!blank) {
52983+ pax_open_kernel();
52984+ *(void **)&info->fbops->fb_blank = NULL;
52985+ pax_close_kernel();
52986+ }
52987
52988 /*
52989 * Find out how much IO memory is required for the mode with
52990@@ -1525,8 +1552,11 @@ static void uvesafb_init_info(struct fb_info *info, struct vbe_mode_ib *mode)
52991 info->flags = FBINFO_FLAG_DEFAULT |
52992 (par->ypan ? FBINFO_HWACCEL_YPAN : 0);
52993
52994- if (!par->ypan)
52995- info->fbops->fb_pan_display = NULL;
52996+ if (!par->ypan) {
52997+ pax_open_kernel();
52998+ *(void **)&info->fbops->fb_pan_display = NULL;
52999+ pax_close_kernel();
53000+ }
53001 }
53002
53003 static void uvesafb_init_mtrr(struct fb_info *info)
53004@@ -1787,6 +1817,11 @@ out_mode:
53005 out:
53006 kfree(par->vbe_modes);
53007
53008+#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
53009+ if (par->pmi_code)
53010+ module_free_exec(NULL, par->pmi_code);
53011+#endif
53012+
53013 framebuffer_release(info);
53014 return err;
53015 }
53016@@ -1811,6 +1846,11 @@ static int uvesafb_remove(struct platform_device *dev)
53017 kfree(par->vbe_state_orig);
53018 kfree(par->vbe_state_saved);
53019
53020+#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
53021+ if (par->pmi_code)
53022+ module_free_exec(NULL, par->pmi_code);
53023+#endif
53024+
53025 framebuffer_release(info);
53026 }
53027 return 0;
53028diff --git a/drivers/video/fbdev/vesafb.c b/drivers/video/fbdev/vesafb.c
53029index 6170e7f..dd63031 100644
53030--- a/drivers/video/fbdev/vesafb.c
53031+++ b/drivers/video/fbdev/vesafb.c
53032@@ -9,6 +9,7 @@
53033 */
53034
53035 #include <linux/module.h>
53036+#include <linux/moduleloader.h>
53037 #include <linux/kernel.h>
53038 #include <linux/errno.h>
53039 #include <linux/string.h>
53040@@ -52,8 +53,8 @@ static int vram_remap; /* Set amount of memory to be used */
53041 static int vram_total; /* Set total amount of memory */
53042 static int pmi_setpal __read_mostly = 1; /* pmi for palette changes ??? */
53043 static int ypan __read_mostly; /* 0..nothing, 1..ypan, 2..ywrap */
53044-static void (*pmi_start)(void) __read_mostly;
53045-static void (*pmi_pal) (void) __read_mostly;
53046+static void (*pmi_start)(void) __read_only;
53047+static void (*pmi_pal) (void) __read_only;
53048 static int depth __read_mostly;
53049 static int vga_compat __read_mostly;
53050 /* --------------------------------------------------------------------- */
53051@@ -233,6 +234,7 @@ static int vesafb_probe(struct platform_device *dev)
53052 unsigned int size_remap;
53053 unsigned int size_total;
53054 char *option = NULL;
53055+ void *pmi_code = NULL;
53056
53057 /* ignore error return of fb_get_options */
53058 fb_get_options("vesafb", &option);
53059@@ -279,10 +281,6 @@ static int vesafb_probe(struct platform_device *dev)
53060 size_remap = size_total;
53061 vesafb_fix.smem_len = size_remap;
53062
53063-#ifndef __i386__
53064- screen_info.vesapm_seg = 0;
53065-#endif
53066-
53067 if (!request_mem_region(vesafb_fix.smem_start, size_total, "vesafb")) {
53068 printk(KERN_WARNING
53069 "vesafb: cannot reserve video memory at 0x%lx\n",
53070@@ -312,9 +310,21 @@ static int vesafb_probe(struct platform_device *dev)
53071 printk(KERN_INFO "vesafb: mode is %dx%dx%d, linelength=%d, pages=%d\n",
53072 vesafb_defined.xres, vesafb_defined.yres, vesafb_defined.bits_per_pixel, vesafb_fix.line_length, screen_info.pages);
53073
53074+#ifdef __i386__
53075+
53076+#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
53077+ pmi_code = module_alloc_exec(screen_info.vesapm_size);
53078+ if (!pmi_code)
53079+#elif !defined(CONFIG_PAX_KERNEXEC)
53080+ if (0)
53081+#endif
53082+
53083+#endif
53084+ screen_info.vesapm_seg = 0;
53085+
53086 if (screen_info.vesapm_seg) {
53087- printk(KERN_INFO "vesafb: protected mode interface info at %04x:%04x\n",
53088- screen_info.vesapm_seg,screen_info.vesapm_off);
53089+ printk(KERN_INFO "vesafb: protected mode interface info at %04x:%04x %04x bytes\n",
53090+ screen_info.vesapm_seg,screen_info.vesapm_off,screen_info.vesapm_size);
53091 }
53092
53093 if (screen_info.vesapm_seg < 0xc000)
53094@@ -322,9 +332,25 @@ static int vesafb_probe(struct platform_device *dev)
53095
53096 if (ypan || pmi_setpal) {
53097 unsigned short *pmi_base;
53098+
53099 pmi_base = (unsigned short*)phys_to_virt(((unsigned long)screen_info.vesapm_seg << 4) + screen_info.vesapm_off);
53100- pmi_start = (void*)((char*)pmi_base + pmi_base[1]);
53101- pmi_pal = (void*)((char*)pmi_base + pmi_base[2]);
53102+
53103+#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
53104+ pax_open_kernel();
53105+ memcpy(pmi_code, pmi_base, screen_info.vesapm_size);
53106+#else
53107+ pmi_code = pmi_base;
53108+#endif
53109+
53110+ pmi_start = (void*)((char*)pmi_code + pmi_base[1]);
53111+ pmi_pal = (void*)((char*)pmi_code + pmi_base[2]);
53112+
53113+#if defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
53114+ pmi_start = ktva_ktla(pmi_start);
53115+ pmi_pal = ktva_ktla(pmi_pal);
53116+ pax_close_kernel();
53117+#endif
53118+
53119 printk(KERN_INFO "vesafb: pmi: set display start = %p, set palette = %p\n",pmi_start,pmi_pal);
53120 if (pmi_base[3]) {
53121 printk(KERN_INFO "vesafb: pmi: ports = ");
53122@@ -477,8 +503,11 @@ static int vesafb_probe(struct platform_device *dev)
53123 info->flags = FBINFO_FLAG_DEFAULT | FBINFO_MISC_FIRMWARE |
53124 (ypan ? FBINFO_HWACCEL_YPAN : 0);
53125
53126- if (!ypan)
53127- info->fbops->fb_pan_display = NULL;
53128+ if (!ypan) {
53129+ pax_open_kernel();
53130+ *(void **)&info->fbops->fb_pan_display = NULL;
53131+ pax_close_kernel();
53132+ }
53133
53134 if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
53135 err = -ENOMEM;
53136@@ -492,6 +521,11 @@ static int vesafb_probe(struct platform_device *dev)
53137 fb_info(info, "%s frame buffer device\n", info->fix.id);
53138 return 0;
53139 err:
53140+
53141+#if defined(__i386__) && defined(CONFIG_MODULES) && defined(CONFIG_PAX_KERNEXEC)
53142+ module_free_exec(NULL, pmi_code);
53143+#endif
53144+
53145 if (info->screen_base)
53146 iounmap(info->screen_base);
53147 framebuffer_release(info);
53148diff --git a/drivers/video/fbdev/via/via_clock.h b/drivers/video/fbdev/via/via_clock.h
53149index 88714ae..16c2e11 100644
53150--- a/drivers/video/fbdev/via/via_clock.h
53151+++ b/drivers/video/fbdev/via/via_clock.h
53152@@ -56,7 +56,7 @@ struct via_clock {
53153
53154 void (*set_engine_pll_state)(u8 state);
53155 void (*set_engine_pll)(struct via_pll_config config);
53156-};
53157+} __no_const;
53158
53159
53160 static inline u32 get_pll_internal_frequency(u32 ref_freq,
53161diff --git a/drivers/video/logo/logo_linux_clut224.ppm b/drivers/video/logo/logo_linux_clut224.ppm
53162index 3c14e43..2630570 100644
53163--- a/drivers/video/logo/logo_linux_clut224.ppm
53164+++ b/drivers/video/logo/logo_linux_clut224.ppm
53165@@ -2,1603 +2,1123 @@ P3
53166 # Standard 224-color Linux logo
53167 80 80
53168 255
53169- 0 0 0 0 0 0 0 0 0 0 0 0
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55699+174 174 174 190 197 201 193 200 203 193 200 203 167 166 167 125 124 125
55700+6 6 6 4 0 0 4 0 0 4 3 3 4 4 4 4 4 4
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55710+4 0 0 4 0 0 6 6 6 41 54 63 158 157 158 220 221 221
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55712+190 197 201 190 197 201 190 197 201 190 197 201 174 174 174 193 200 203
55713+193 200 203 220 221 221 174 174 174 125 124 125 37 38 37 4 0 0
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55720+4 4 4 4 4 4
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55724+6 6 6 6 6 6 4 0 0 4 0 0 13 16 17 60 73 81
55725+174 174 174 220 221 221 220 221 221 205 212 215 190 197 201 174 174 174
55726+193 200 203 174 174 174 190 197 201 174 174 174 193 200 203 220 221 221
55727+193 200 203 131 129 131 37 38 37 6 6 6 4 0 0 4 0 0
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55739+6 6 6 125 124 125 174 174 174 220 221 221 220 221 221 193 200 203
55740+193 200 203 193 200 203 193 200 203 193 200 203 220 221 221 158 157 158
55741+60 73 81 6 6 6 4 0 0 4 0 0 5 5 5 6 6 6
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55750+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55751+4 4 4 5 5 5 5 5 5 4 3 3 5 5 5 4 3 3
55752+5 5 5 5 5 5 6 6 6 6 6 6 4 0 0 4 0 0
55753+4 0 0 4 0 0 26 28 28 125 124 125 174 174 174 193 200 203
55754+193 200 203 174 174 174 193 200 203 167 166 167 125 124 125 6 6 6
55755+6 6 6 6 6 6 4 0 0 6 6 6 6 6 6 5 5 5
55756+4 3 3 5 5 5 4 4 4 4 4 4 4 4 4 4 4 4
55757+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55758+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
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55762+4 4 4 4 4 4
55763+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
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55766+4 3 3 6 6 6 4 0 0 6 6 6 6 6 6 6 6 6
55767+6 6 6 4 0 0 4 0 0 6 6 6 37 38 37 125 124 125
55768+153 152 153 131 129 131 125 124 125 37 38 37 6 6 6 6 6 6
55769+6 6 6 4 0 0 6 6 6 6 6 6 4 3 3 5 5 5
55770+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55771+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
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55782+24 26 27 24 26 27 6 6 6 6 6 6 6 6 6 4 0 0
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55788+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55789+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
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55809+5 5 5 5 5 5 4 0 0 6 6 6 4 0 0 6 6 6
55810+6 6 6 6 6 6 6 6 6 4 0 0 6 6 6 4 0 0
55811+6 6 6 4 3 3 5 5 5 4 3 3 5 5 5 4 4 4
55812+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55813+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55814+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55815+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55816+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55817+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55818+4 4 4 4 4 4
55819+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55820+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55821+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55822+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 5 5 5
55823+4 3 3 6 6 6 4 3 3 6 6 6 6 6 6 6 6 6
55824+4 0 0 6 6 6 4 0 0 6 6 6 6 6 6 6 6 6
55825+6 6 6 4 3 3 5 5 5 4 4 4 4 4 4 4 4 4
55826+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55827+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55828+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55829+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55830+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55831+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55832+4 4 4 4 4 4
55833+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55834+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55835+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55836+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55837+4 4 4 5 5 5 4 3 3 5 5 5 4 0 0 6 6 6
55838+6 6 6 4 0 0 6 6 6 6 6 6 4 0 0 6 6 6
55839+4 3 3 5 5 5 5 5 5 4 4 4 4 4 4 4 4 4
55840+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55841+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55842+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55843+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55844+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
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55847+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
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55849+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
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55851+4 4 4 5 5 5 4 3 3 5 5 5 6 6 6 4 3 3
55852+4 3 3 6 6 6 6 6 6 4 3 3 6 6 6 4 3 3
55853+5 5 5 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55854+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55855+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55856+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55857+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55858+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55859+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55860+4 4 4 4 4 4
55861+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55862+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55863+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55864+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55865+4 4 4 4 4 4 4 4 4 5 5 5 4 3 3 6 6 6
55866+5 5 5 4 3 3 4 3 3 4 3 3 5 5 5 5 5 5
55867+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55868+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55869+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55870+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55871+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55872+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55873+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55874+4 4 4 4 4 4
55875+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55876+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55877+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55878+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55879+4 4 4 4 4 4 4 4 4 4 4 4 5 5 5 4 3 3
55880+5 5 5 4 3 3 5 5 5 5 5 5 4 4 4 4 4 4
55881+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55882+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55883+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55884+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55885+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55886+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55887+4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
55888+4 4 4 4 4 4
55889diff --git a/drivers/xen/xenfs/xenstored.c b/drivers/xen/xenfs/xenstored.c
55890index fef20db..d28b1ab 100644
55891--- a/drivers/xen/xenfs/xenstored.c
55892+++ b/drivers/xen/xenfs/xenstored.c
55893@@ -24,7 +24,12 @@ static int xsd_release(struct inode *inode, struct file *file)
55894 static int xsd_kva_open(struct inode *inode, struct file *file)
55895 {
55896 file->private_data = (void *)kasprintf(GFP_KERNEL, "0x%p",
55897+#ifdef CONFIG_GRKERNSEC_HIDESYM
55898+ NULL);
55899+#else
55900 xen_store_interface);
55901+#endif
55902+
55903 if (!file->private_data)
55904 return -ENOMEM;
55905 return 0;
55906diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c
55907index c71e886..61d3d44b 100644
55908--- a/fs/9p/vfs_addr.c
55909+++ b/fs/9p/vfs_addr.c
55910@@ -187,7 +187,7 @@ static int v9fs_vfs_writepage_locked(struct page *page)
55911
55912 retval = v9fs_file_write_internal(inode,
55913 v9inode->writeback_fid,
55914- (__force const char __user *)buffer,
55915+ (const char __force_user *)buffer,
55916 len, &offset, 0);
55917 if (retval > 0)
55918 retval = 0;
55919diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
55920index 53161ec..e261d8a 100644
55921--- a/fs/9p/vfs_inode.c
55922+++ b/fs/9p/vfs_inode.c
55923@@ -1312,7 +1312,7 @@ static void *v9fs_vfs_follow_link(struct dentry *dentry, struct nameidata *nd)
55924 void
55925 v9fs_vfs_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
55926 {
55927- char *s = nd_get_link(nd);
55928+ const char *s = nd_get_link(nd);
55929
55930 p9_debug(P9_DEBUG_VFS, " %s %s\n",
55931 dentry->d_name.name, IS_ERR(s) ? "<error>" : s);
55932diff --git a/fs/Kconfig.binfmt b/fs/Kconfig.binfmt
55933index 370b24c..ff0be7b 100644
55934--- a/fs/Kconfig.binfmt
55935+++ b/fs/Kconfig.binfmt
55936@@ -103,7 +103,7 @@ config HAVE_AOUT
55937
55938 config BINFMT_AOUT
55939 tristate "Kernel support for a.out and ECOFF binaries"
55940- depends on HAVE_AOUT
55941+ depends on HAVE_AOUT && BROKEN
55942 ---help---
55943 A.out (Assembler.OUTput) is a set of formats for libraries and
55944 executables used in the earliest versions of UNIX. Linux used
55945diff --git a/fs/afs/inode.c b/fs/afs/inode.c
55946index 2946712..f737435 100644
55947--- a/fs/afs/inode.c
55948+++ b/fs/afs/inode.c
55949@@ -141,7 +141,7 @@ struct inode *afs_iget_autocell(struct inode *dir, const char *dev_name,
55950 struct afs_vnode *vnode;
55951 struct super_block *sb;
55952 struct inode *inode;
55953- static atomic_t afs_autocell_ino;
55954+ static atomic_unchecked_t afs_autocell_ino;
55955
55956 _enter("{%x:%u},%*.*s,",
55957 AFS_FS_I(dir)->fid.vid, AFS_FS_I(dir)->fid.vnode,
55958@@ -154,7 +154,7 @@ struct inode *afs_iget_autocell(struct inode *dir, const char *dev_name,
55959 data.fid.unique = 0;
55960 data.fid.vnode = 0;
55961
55962- inode = iget5_locked(sb, atomic_inc_return(&afs_autocell_ino),
55963+ inode = iget5_locked(sb, atomic_inc_return_unchecked(&afs_autocell_ino),
55964 afs_iget5_autocell_test, afs_iget5_set,
55965 &data);
55966 if (!inode) {
55967diff --git a/fs/aio.c b/fs/aio.c
55968index e609e15..c9fcd97 100644
55969--- a/fs/aio.c
55970+++ b/fs/aio.c
55971@@ -380,7 +380,7 @@ static int aio_setup_ring(struct kioctx *ctx)
55972 size += sizeof(struct io_event) * nr_events;
55973
55974 nr_pages = PFN_UP(size);
55975- if (nr_pages < 0)
55976+ if (nr_pages <= 0)
55977 return -EINVAL;
55978
55979 file = aio_private_file(ctx, nr_pages);
55980diff --git a/fs/attr.c b/fs/attr.c
55981index 6530ced..4a827e2 100644
55982--- a/fs/attr.c
55983+++ b/fs/attr.c
55984@@ -102,6 +102,7 @@ int inode_newsize_ok(const struct inode *inode, loff_t offset)
55985 unsigned long limit;
55986
55987 limit = rlimit(RLIMIT_FSIZE);
55988+ gr_learn_resource(current, RLIMIT_FSIZE, (unsigned long)offset, 1);
55989 if (limit != RLIM_INFINITY && offset > limit)
55990 goto out_sig;
55991 if (offset > inode->i_sb->s_maxbytes)
55992diff --git a/fs/autofs4/waitq.c b/fs/autofs4/waitq.c
55993index 116fd38..c04182da 100644
55994--- a/fs/autofs4/waitq.c
55995+++ b/fs/autofs4/waitq.c
55996@@ -59,7 +59,7 @@ static int autofs4_write(struct autofs_sb_info *sbi,
55997 {
55998 unsigned long sigpipe, flags;
55999 mm_segment_t fs;
56000- const char *data = (const char *)addr;
56001+ const char __user *data = (const char __force_user *)addr;
56002 ssize_t wr = 0;
56003
56004 sigpipe = sigismember(&current->pending.signal, SIGPIPE);
56005@@ -340,6 +340,10 @@ static int validate_request(struct autofs_wait_queue **wait,
56006 return 1;
56007 }
56008
56009+#ifdef CONFIG_GRKERNSEC_HIDESYM
56010+static atomic_unchecked_t autofs_dummy_name_id = ATOMIC_INIT(0);
56011+#endif
56012+
56013 int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
56014 enum autofs_notify notify)
56015 {
56016@@ -385,7 +389,12 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
56017
56018 /* If this is a direct mount request create a dummy name */
56019 if (IS_ROOT(dentry) && autofs_type_trigger(sbi->type))
56020+#ifdef CONFIG_GRKERNSEC_HIDESYM
56021+ /* this name does get written to userland via autofs4_write() */
56022+ qstr.len = sprintf(name, "%08x", atomic_inc_return_unchecked(&autofs_dummy_name_id));
56023+#else
56024 qstr.len = sprintf(name, "%p", dentry);
56025+#endif
56026 else {
56027 qstr.len = autofs4_getpath(sbi, dentry, &name);
56028 if (!qstr.len) {
56029diff --git a/fs/befs/endian.h b/fs/befs/endian.h
56030index 2722387..56059b5 100644
56031--- a/fs/befs/endian.h
56032+++ b/fs/befs/endian.h
56033@@ -11,7 +11,7 @@
56034
56035 #include <asm/byteorder.h>
56036
56037-static inline u64
56038+static inline u64 __intentional_overflow(-1)
56039 fs64_to_cpu(const struct super_block *sb, fs64 n)
56040 {
56041 if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
56042@@ -29,7 +29,7 @@ cpu_to_fs64(const struct super_block *sb, u64 n)
56043 return (__force fs64)cpu_to_be64(n);
56044 }
56045
56046-static inline u32
56047+static inline u32 __intentional_overflow(-1)
56048 fs32_to_cpu(const struct super_block *sb, fs32 n)
56049 {
56050 if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
56051@@ -47,7 +47,7 @@ cpu_to_fs32(const struct super_block *sb, u32 n)
56052 return (__force fs32)cpu_to_be32(n);
56053 }
56054
56055-static inline u16
56056+static inline u16 __intentional_overflow(-1)
56057 fs16_to_cpu(const struct super_block *sb, fs16 n)
56058 {
56059 if (BEFS_SB(sb)->byte_order == BEFS_BYTESEX_LE)
56060diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
56061index ca0ba15..0fa3257 100644
56062--- a/fs/binfmt_aout.c
56063+++ b/fs/binfmt_aout.c
56064@@ -16,6 +16,7 @@
56065 #include <linux/string.h>
56066 #include <linux/fs.h>
56067 #include <linux/file.h>
56068+#include <linux/security.h>
56069 #include <linux/stat.h>
56070 #include <linux/fcntl.h>
56071 #include <linux/ptrace.h>
56072@@ -58,6 +59,8 @@ static int aout_core_dump(struct coredump_params *cprm)
56073 #endif
56074 # define START_STACK(u) ((void __user *)u.start_stack)
56075
56076+ memset(&dump, 0, sizeof(dump));
56077+
56078 fs = get_fs();
56079 set_fs(KERNEL_DS);
56080 has_dumped = 1;
56081@@ -68,10 +71,12 @@ static int aout_core_dump(struct coredump_params *cprm)
56082
56083 /* If the size of the dump file exceeds the rlimit, then see what would happen
56084 if we wrote the stack, but not the data area. */
56085+ gr_learn_resource(current, RLIMIT_CORE, (dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE, 1);
56086 if ((dump.u_dsize + dump.u_ssize+1) * PAGE_SIZE > cprm->limit)
56087 dump.u_dsize = 0;
56088
56089 /* Make sure we have enough room to write the stack and data areas. */
56090+ gr_learn_resource(current, RLIMIT_CORE, (dump.u_ssize + 1) * PAGE_SIZE, 1);
56091 if ((dump.u_ssize + 1) * PAGE_SIZE > cprm->limit)
56092 dump.u_ssize = 0;
56093
56094@@ -232,6 +237,8 @@ static int load_aout_binary(struct linux_binprm * bprm)
56095 rlim = rlimit(RLIMIT_DATA);
56096 if (rlim >= RLIM_INFINITY)
56097 rlim = ~0;
56098+
56099+ gr_learn_resource(current, RLIMIT_DATA, ex.a_data + ex.a_bss, 1);
56100 if (ex.a_data + ex.a_bss > rlim)
56101 return -ENOMEM;
56102
56103@@ -264,6 +271,27 @@ static int load_aout_binary(struct linux_binprm * bprm)
56104
56105 install_exec_creds(bprm);
56106
56107+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
56108+ current->mm->pax_flags = 0UL;
56109+#endif
56110+
56111+#ifdef CONFIG_PAX_PAGEEXEC
56112+ if (!(N_FLAGS(ex) & F_PAX_PAGEEXEC)) {
56113+ current->mm->pax_flags |= MF_PAX_PAGEEXEC;
56114+
56115+#ifdef CONFIG_PAX_EMUTRAMP
56116+ if (N_FLAGS(ex) & F_PAX_EMUTRAMP)
56117+ current->mm->pax_flags |= MF_PAX_EMUTRAMP;
56118+#endif
56119+
56120+#ifdef CONFIG_PAX_MPROTECT
56121+ if (!(N_FLAGS(ex) & F_PAX_MPROTECT))
56122+ current->mm->pax_flags |= MF_PAX_MPROTECT;
56123+#endif
56124+
56125+ }
56126+#endif
56127+
56128 if (N_MAGIC(ex) == OMAGIC) {
56129 unsigned long text_addr, map_size;
56130 loff_t pos;
56131@@ -321,7 +349,7 @@ static int load_aout_binary(struct linux_binprm * bprm)
56132 }
56133
56134 error = vm_mmap(bprm->file, N_DATADDR(ex), ex.a_data,
56135- PROT_READ | PROT_WRITE | PROT_EXEC,
56136+ PROT_READ | PROT_WRITE,
56137 MAP_FIXED | MAP_PRIVATE | MAP_DENYWRITE | MAP_EXECUTABLE,
56138 fd_offset + ex.a_text);
56139 if (error != N_DATADDR(ex)) {
56140diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
56141index aa3cb62..bc53934 100644
56142--- a/fs/binfmt_elf.c
56143+++ b/fs/binfmt_elf.c
56144@@ -34,6 +34,7 @@
56145 #include <linux/utsname.h>
56146 #include <linux/coredump.h>
56147 #include <linux/sched.h>
56148+#include <linux/xattr.h>
56149 #include <asm/uaccess.h>
56150 #include <asm/param.h>
56151 #include <asm/page.h>
56152@@ -47,7 +48,7 @@
56153
56154 static int load_elf_binary(struct linux_binprm *bprm);
56155 static unsigned long elf_map(struct file *, unsigned long, struct elf_phdr *,
56156- int, int, unsigned long);
56157+ int, int, unsigned long) __intentional_overflow(-1);
56158
56159 #ifdef CONFIG_USELIB
56160 static int load_elf_library(struct file *);
56161@@ -65,6 +66,14 @@ static int elf_core_dump(struct coredump_params *cprm);
56162 #define elf_core_dump NULL
56163 #endif
56164
56165+#ifdef CONFIG_PAX_MPROTECT
56166+static void elf_handle_mprotect(struct vm_area_struct *vma, unsigned long newflags);
56167+#endif
56168+
56169+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
56170+static void elf_handle_mmap(struct file *file);
56171+#endif
56172+
56173 #if ELF_EXEC_PAGESIZE > PAGE_SIZE
56174 #define ELF_MIN_ALIGN ELF_EXEC_PAGESIZE
56175 #else
56176@@ -84,6 +93,15 @@ static struct linux_binfmt elf_format = {
56177 .load_binary = load_elf_binary,
56178 .load_shlib = load_elf_library,
56179 .core_dump = elf_core_dump,
56180+
56181+#ifdef CONFIG_PAX_MPROTECT
56182+ .handle_mprotect= elf_handle_mprotect,
56183+#endif
56184+
56185+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
56186+ .handle_mmap = elf_handle_mmap,
56187+#endif
56188+
56189 .min_coredump = ELF_EXEC_PAGESIZE,
56190 };
56191
56192@@ -91,6 +109,8 @@ static struct linux_binfmt elf_format = {
56193
56194 static int set_brk(unsigned long start, unsigned long end)
56195 {
56196+ unsigned long e = end;
56197+
56198 start = ELF_PAGEALIGN(start);
56199 end = ELF_PAGEALIGN(end);
56200 if (end > start) {
56201@@ -99,7 +119,7 @@ static int set_brk(unsigned long start, unsigned long end)
56202 if (BAD_ADDR(addr))
56203 return addr;
56204 }
56205- current->mm->start_brk = current->mm->brk = end;
56206+ current->mm->start_brk = current->mm->brk = e;
56207 return 0;
56208 }
56209
56210@@ -160,12 +180,13 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
56211 elf_addr_t __user *u_rand_bytes;
56212 const char *k_platform = ELF_PLATFORM;
56213 const char *k_base_platform = ELF_BASE_PLATFORM;
56214- unsigned char k_rand_bytes[16];
56215+ u32 k_rand_bytes[4];
56216 int items;
56217 elf_addr_t *elf_info;
56218 int ei_index = 0;
56219 const struct cred *cred = current_cred();
56220 struct vm_area_struct *vma;
56221+ unsigned long saved_auxv[AT_VECTOR_SIZE];
56222
56223 /*
56224 * In some cases (e.g. Hyper-Threading), we want to avoid L1
56225@@ -207,8 +228,12 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
56226 * Generate 16 random bytes for userspace PRNG seeding.
56227 */
56228 get_random_bytes(k_rand_bytes, sizeof(k_rand_bytes));
56229- u_rand_bytes = (elf_addr_t __user *)
56230- STACK_ALLOC(p, sizeof(k_rand_bytes));
56231+ prandom_seed(k_rand_bytes[0] ^ prandom_u32());
56232+ prandom_seed(k_rand_bytes[1] ^ prandom_u32());
56233+ prandom_seed(k_rand_bytes[2] ^ prandom_u32());
56234+ prandom_seed(k_rand_bytes[3] ^ prandom_u32());
56235+ p = STACK_ROUND(p, sizeof(k_rand_bytes));
56236+ u_rand_bytes = (elf_addr_t __user *) p;
56237 if (__copy_to_user(u_rand_bytes, k_rand_bytes, sizeof(k_rand_bytes)))
56238 return -EFAULT;
56239
56240@@ -323,9 +348,11 @@ create_elf_tables(struct linux_binprm *bprm, struct elfhdr *exec,
56241 return -EFAULT;
56242 current->mm->env_end = p;
56243
56244+ memcpy(saved_auxv, elf_info, ei_index * sizeof(elf_addr_t));
56245+
56246 /* Put the elf_info on the stack in the right place. */
56247 sp = (elf_addr_t __user *)envp + 1;
56248- if (copy_to_user(sp, elf_info, ei_index * sizeof(elf_addr_t)))
56249+ if (copy_to_user(sp, saved_auxv, ei_index * sizeof(elf_addr_t)))
56250 return -EFAULT;
56251 return 0;
56252 }
56253@@ -393,15 +420,14 @@ static unsigned long total_mapping_size(struct elf_phdr *cmds, int nr)
56254 an ELF header */
56255
56256 static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
56257- struct file *interpreter, unsigned long *interp_map_addr,
56258- unsigned long no_base)
56259+ struct file *interpreter, unsigned long no_base)
56260 {
56261 struct elf_phdr *elf_phdata;
56262 struct elf_phdr *eppnt;
56263- unsigned long load_addr = 0;
56264+ unsigned long load_addr = 0, pax_task_size = TASK_SIZE;
56265 int load_addr_set = 0;
56266 unsigned long last_bss = 0, elf_bss = 0;
56267- unsigned long error = ~0UL;
56268+ unsigned long error = -EINVAL;
56269 unsigned long total_size;
56270 int retval, i, size;
56271
56272@@ -447,6 +473,11 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
56273 goto out_close;
56274 }
56275
56276+#ifdef CONFIG_PAX_SEGMEXEC
56277+ if (current->mm->pax_flags & MF_PAX_SEGMEXEC)
56278+ pax_task_size = SEGMEXEC_TASK_SIZE;
56279+#endif
56280+
56281 eppnt = elf_phdata;
56282 for (i = 0; i < interp_elf_ex->e_phnum; i++, eppnt++) {
56283 if (eppnt->p_type == PT_LOAD) {
56284@@ -470,8 +501,6 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
56285 map_addr = elf_map(interpreter, load_addr + vaddr,
56286 eppnt, elf_prot, elf_type, total_size);
56287 total_size = 0;
56288- if (!*interp_map_addr)
56289- *interp_map_addr = map_addr;
56290 error = map_addr;
56291 if (BAD_ADDR(map_addr))
56292 goto out_close;
56293@@ -490,8 +519,8 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
56294 k = load_addr + eppnt->p_vaddr;
56295 if (BAD_ADDR(k) ||
56296 eppnt->p_filesz > eppnt->p_memsz ||
56297- eppnt->p_memsz > TASK_SIZE ||
56298- TASK_SIZE - eppnt->p_memsz < k) {
56299+ eppnt->p_memsz > pax_task_size ||
56300+ pax_task_size - eppnt->p_memsz < k) {
56301 error = -ENOMEM;
56302 goto out_close;
56303 }
56304@@ -530,9 +559,11 @@ static unsigned long load_elf_interp(struct elfhdr *interp_elf_ex,
56305 elf_bss = ELF_PAGESTART(elf_bss + ELF_MIN_ALIGN - 1);
56306
56307 /* Map the last of the bss segment */
56308- error = vm_brk(elf_bss, last_bss - elf_bss);
56309- if (BAD_ADDR(error))
56310- goto out_close;
56311+ if (last_bss > elf_bss) {
56312+ error = vm_brk(elf_bss, last_bss - elf_bss);
56313+ if (BAD_ADDR(error))
56314+ goto out_close;
56315+ }
56316 }
56317
56318 error = load_addr;
56319@@ -543,6 +574,336 @@ out:
56320 return error;
56321 }
56322
56323+#ifdef CONFIG_PAX_PT_PAX_FLAGS
56324+#ifdef CONFIG_PAX_SOFTMODE
56325+static unsigned long pax_parse_pt_pax_softmode(const struct elf_phdr * const elf_phdata)
56326+{
56327+ unsigned long pax_flags = 0UL;
56328+
56329+#ifdef CONFIG_PAX_PAGEEXEC
56330+ if (elf_phdata->p_flags & PF_PAGEEXEC)
56331+ pax_flags |= MF_PAX_PAGEEXEC;
56332+#endif
56333+
56334+#ifdef CONFIG_PAX_SEGMEXEC
56335+ if (elf_phdata->p_flags & PF_SEGMEXEC)
56336+ pax_flags |= MF_PAX_SEGMEXEC;
56337+#endif
56338+
56339+#ifdef CONFIG_PAX_EMUTRAMP
56340+ if ((elf_phdata->p_flags & PF_EMUTRAMP) && (pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)))
56341+ pax_flags |= MF_PAX_EMUTRAMP;
56342+#endif
56343+
56344+#ifdef CONFIG_PAX_MPROTECT
56345+ if (elf_phdata->p_flags & PF_MPROTECT)
56346+ pax_flags |= MF_PAX_MPROTECT;
56347+#endif
56348+
56349+#if defined(CONFIG_PAX_RANDMMAP) || defined(CONFIG_PAX_RANDUSTACK)
56350+ if (randomize_va_space && (elf_phdata->p_flags & PF_RANDMMAP))
56351+ pax_flags |= MF_PAX_RANDMMAP;
56352+#endif
56353+
56354+ return pax_flags;
56355+}
56356+#endif
56357+
56358+static unsigned long pax_parse_pt_pax_hardmode(const struct elf_phdr * const elf_phdata)
56359+{
56360+ unsigned long pax_flags = 0UL;
56361+
56362+#ifdef CONFIG_PAX_PAGEEXEC
56363+ if (!(elf_phdata->p_flags & PF_NOPAGEEXEC))
56364+ pax_flags |= MF_PAX_PAGEEXEC;
56365+#endif
56366+
56367+#ifdef CONFIG_PAX_SEGMEXEC
56368+ if (!(elf_phdata->p_flags & PF_NOSEGMEXEC))
56369+ pax_flags |= MF_PAX_SEGMEXEC;
56370+#endif
56371+
56372+#ifdef CONFIG_PAX_EMUTRAMP
56373+ if (!(elf_phdata->p_flags & PF_NOEMUTRAMP))
56374+ pax_flags |= MF_PAX_EMUTRAMP;
56375+#endif
56376+
56377+#ifdef CONFIG_PAX_MPROTECT
56378+ if (!(elf_phdata->p_flags & PF_NOMPROTECT))
56379+ pax_flags |= MF_PAX_MPROTECT;
56380+#endif
56381+
56382+#if defined(CONFIG_PAX_RANDMMAP) || defined(CONFIG_PAX_RANDUSTACK)
56383+ if (randomize_va_space && !(elf_phdata->p_flags & PF_NORANDMMAP))
56384+ pax_flags |= MF_PAX_RANDMMAP;
56385+#endif
56386+
56387+ return pax_flags;
56388+}
56389+#endif
56390+
56391+#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
56392+#ifdef CONFIG_PAX_SOFTMODE
56393+static unsigned long pax_parse_xattr_pax_softmode(unsigned long pax_flags_softmode)
56394+{
56395+ unsigned long pax_flags = 0UL;
56396+
56397+#ifdef CONFIG_PAX_PAGEEXEC
56398+ if (pax_flags_softmode & MF_PAX_PAGEEXEC)
56399+ pax_flags |= MF_PAX_PAGEEXEC;
56400+#endif
56401+
56402+#ifdef CONFIG_PAX_SEGMEXEC
56403+ if (pax_flags_softmode & MF_PAX_SEGMEXEC)
56404+ pax_flags |= MF_PAX_SEGMEXEC;
56405+#endif
56406+
56407+#ifdef CONFIG_PAX_EMUTRAMP
56408+ if ((pax_flags_softmode & MF_PAX_EMUTRAMP) && (pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)))
56409+ pax_flags |= MF_PAX_EMUTRAMP;
56410+#endif
56411+
56412+#ifdef CONFIG_PAX_MPROTECT
56413+ if (pax_flags_softmode & MF_PAX_MPROTECT)
56414+ pax_flags |= MF_PAX_MPROTECT;
56415+#endif
56416+
56417+#if defined(CONFIG_PAX_RANDMMAP) || defined(CONFIG_PAX_RANDUSTACK)
56418+ if (randomize_va_space && (pax_flags_softmode & MF_PAX_RANDMMAP))
56419+ pax_flags |= MF_PAX_RANDMMAP;
56420+#endif
56421+
56422+ return pax_flags;
56423+}
56424+#endif
56425+
56426+static unsigned long pax_parse_xattr_pax_hardmode(unsigned long pax_flags_hardmode)
56427+{
56428+ unsigned long pax_flags = 0UL;
56429+
56430+#ifdef CONFIG_PAX_PAGEEXEC
56431+ if (!(pax_flags_hardmode & MF_PAX_PAGEEXEC))
56432+ pax_flags |= MF_PAX_PAGEEXEC;
56433+#endif
56434+
56435+#ifdef CONFIG_PAX_SEGMEXEC
56436+ if (!(pax_flags_hardmode & MF_PAX_SEGMEXEC))
56437+ pax_flags |= MF_PAX_SEGMEXEC;
56438+#endif
56439+
56440+#ifdef CONFIG_PAX_EMUTRAMP
56441+ if (!(pax_flags_hardmode & MF_PAX_EMUTRAMP))
56442+ pax_flags |= MF_PAX_EMUTRAMP;
56443+#endif
56444+
56445+#ifdef CONFIG_PAX_MPROTECT
56446+ if (!(pax_flags_hardmode & MF_PAX_MPROTECT))
56447+ pax_flags |= MF_PAX_MPROTECT;
56448+#endif
56449+
56450+#if defined(CONFIG_PAX_RANDMMAP) || defined(CONFIG_PAX_RANDUSTACK)
56451+ if (randomize_va_space && !(pax_flags_hardmode & MF_PAX_RANDMMAP))
56452+ pax_flags |= MF_PAX_RANDMMAP;
56453+#endif
56454+
56455+ return pax_flags;
56456+}
56457+#endif
56458+
56459+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
56460+static unsigned long pax_parse_defaults(void)
56461+{
56462+ unsigned long pax_flags = 0UL;
56463+
56464+#ifdef CONFIG_PAX_SOFTMODE
56465+ if (pax_softmode)
56466+ return pax_flags;
56467+#endif
56468+
56469+#ifdef CONFIG_PAX_PAGEEXEC
56470+ pax_flags |= MF_PAX_PAGEEXEC;
56471+#endif
56472+
56473+#ifdef CONFIG_PAX_SEGMEXEC
56474+ pax_flags |= MF_PAX_SEGMEXEC;
56475+#endif
56476+
56477+#ifdef CONFIG_PAX_MPROTECT
56478+ pax_flags |= MF_PAX_MPROTECT;
56479+#endif
56480+
56481+#ifdef CONFIG_PAX_RANDMMAP
56482+ if (randomize_va_space)
56483+ pax_flags |= MF_PAX_RANDMMAP;
56484+#endif
56485+
56486+ return pax_flags;
56487+}
56488+
56489+static unsigned long pax_parse_ei_pax(const struct elfhdr * const elf_ex)
56490+{
56491+ unsigned long pax_flags = PAX_PARSE_FLAGS_FALLBACK;
56492+
56493+#ifdef CONFIG_PAX_EI_PAX
56494+
56495+#ifdef CONFIG_PAX_SOFTMODE
56496+ if (pax_softmode)
56497+ return pax_flags;
56498+#endif
56499+
56500+ pax_flags = 0UL;
56501+
56502+#ifdef CONFIG_PAX_PAGEEXEC
56503+ if (!(elf_ex->e_ident[EI_PAX] & EF_PAX_PAGEEXEC))
56504+ pax_flags |= MF_PAX_PAGEEXEC;
56505+#endif
56506+
56507+#ifdef CONFIG_PAX_SEGMEXEC
56508+ if (!(elf_ex->e_ident[EI_PAX] & EF_PAX_SEGMEXEC))
56509+ pax_flags |= MF_PAX_SEGMEXEC;
56510+#endif
56511+
56512+#ifdef CONFIG_PAX_EMUTRAMP
56513+ if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) && (elf_ex->e_ident[EI_PAX] & EF_PAX_EMUTRAMP))
56514+ pax_flags |= MF_PAX_EMUTRAMP;
56515+#endif
56516+
56517+#ifdef CONFIG_PAX_MPROTECT
56518+ if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) && !(elf_ex->e_ident[EI_PAX] & EF_PAX_MPROTECT))
56519+ pax_flags |= MF_PAX_MPROTECT;
56520+#endif
56521+
56522+#ifdef CONFIG_PAX_ASLR
56523+ if (randomize_va_space && !(elf_ex->e_ident[EI_PAX] & EF_PAX_RANDMMAP))
56524+ pax_flags |= MF_PAX_RANDMMAP;
56525+#endif
56526+
56527+#endif
56528+
56529+ return pax_flags;
56530+
56531+}
56532+
56533+static unsigned long pax_parse_pt_pax(const struct elfhdr * const elf_ex, const struct elf_phdr * const elf_phdata)
56534+{
56535+
56536+#ifdef CONFIG_PAX_PT_PAX_FLAGS
56537+ unsigned long i;
56538+
56539+ for (i = 0UL; i < elf_ex->e_phnum; i++)
56540+ if (elf_phdata[i].p_type == PT_PAX_FLAGS) {
56541+ if (((elf_phdata[i].p_flags & PF_PAGEEXEC) && (elf_phdata[i].p_flags & PF_NOPAGEEXEC)) ||
56542+ ((elf_phdata[i].p_flags & PF_SEGMEXEC) && (elf_phdata[i].p_flags & PF_NOSEGMEXEC)) ||
56543+ ((elf_phdata[i].p_flags & PF_EMUTRAMP) && (elf_phdata[i].p_flags & PF_NOEMUTRAMP)) ||
56544+ ((elf_phdata[i].p_flags & PF_MPROTECT) && (elf_phdata[i].p_flags & PF_NOMPROTECT)) ||
56545+ ((elf_phdata[i].p_flags & PF_RANDMMAP) && (elf_phdata[i].p_flags & PF_NORANDMMAP)))
56546+ return PAX_PARSE_FLAGS_FALLBACK;
56547+
56548+#ifdef CONFIG_PAX_SOFTMODE
56549+ if (pax_softmode)
56550+ return pax_parse_pt_pax_softmode(&elf_phdata[i]);
56551+ else
56552+#endif
56553+
56554+ return pax_parse_pt_pax_hardmode(&elf_phdata[i]);
56555+ break;
56556+ }
56557+#endif
56558+
56559+ return PAX_PARSE_FLAGS_FALLBACK;
56560+}
56561+
56562+static unsigned long pax_parse_xattr_pax(struct file * const file)
56563+{
56564+
56565+#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
56566+ ssize_t xattr_size, i;
56567+ unsigned char xattr_value[sizeof("pemrs") - 1];
56568+ unsigned long pax_flags_hardmode = 0UL, pax_flags_softmode = 0UL;
56569+
56570+ xattr_size = pax_getxattr(file->f_path.dentry, xattr_value, sizeof xattr_value);
56571+ if (xattr_size < 0 || xattr_size > sizeof xattr_value)
56572+ return PAX_PARSE_FLAGS_FALLBACK;
56573+
56574+ for (i = 0; i < xattr_size; i++)
56575+ switch (xattr_value[i]) {
56576+ default:
56577+ return PAX_PARSE_FLAGS_FALLBACK;
56578+
56579+#define parse_flag(option1, option2, flag) \
56580+ case option1: \
56581+ if (pax_flags_hardmode & MF_PAX_##flag) \
56582+ return PAX_PARSE_FLAGS_FALLBACK;\
56583+ pax_flags_hardmode |= MF_PAX_##flag; \
56584+ break; \
56585+ case option2: \
56586+ if (pax_flags_softmode & MF_PAX_##flag) \
56587+ return PAX_PARSE_FLAGS_FALLBACK;\
56588+ pax_flags_softmode |= MF_PAX_##flag; \
56589+ break;
56590+
56591+ parse_flag('p', 'P', PAGEEXEC);
56592+ parse_flag('e', 'E', EMUTRAMP);
56593+ parse_flag('m', 'M', MPROTECT);
56594+ parse_flag('r', 'R', RANDMMAP);
56595+ parse_flag('s', 'S', SEGMEXEC);
56596+
56597+#undef parse_flag
56598+ }
56599+
56600+ if (pax_flags_hardmode & pax_flags_softmode)
56601+ return PAX_PARSE_FLAGS_FALLBACK;
56602+
56603+#ifdef CONFIG_PAX_SOFTMODE
56604+ if (pax_softmode)
56605+ return pax_parse_xattr_pax_softmode(pax_flags_softmode);
56606+ else
56607+#endif
56608+
56609+ return pax_parse_xattr_pax_hardmode(pax_flags_hardmode);
56610+#else
56611+ return PAX_PARSE_FLAGS_FALLBACK;
56612+#endif
56613+
56614+}
56615+
56616+static long pax_parse_pax_flags(const struct elfhdr * const elf_ex, const struct elf_phdr * const elf_phdata, struct file * const file)
56617+{
56618+ unsigned long pax_flags, ei_pax_flags, pt_pax_flags, xattr_pax_flags;
56619+
56620+ pax_flags = pax_parse_defaults();
56621+ ei_pax_flags = pax_parse_ei_pax(elf_ex);
56622+ pt_pax_flags = pax_parse_pt_pax(elf_ex, elf_phdata);
56623+ xattr_pax_flags = pax_parse_xattr_pax(file);
56624+
56625+ if (pt_pax_flags != PAX_PARSE_FLAGS_FALLBACK &&
56626+ xattr_pax_flags != PAX_PARSE_FLAGS_FALLBACK &&
56627+ pt_pax_flags != xattr_pax_flags)
56628+ return -EINVAL;
56629+ if (xattr_pax_flags != PAX_PARSE_FLAGS_FALLBACK)
56630+ pax_flags = xattr_pax_flags;
56631+ else if (pt_pax_flags != PAX_PARSE_FLAGS_FALLBACK)
56632+ pax_flags = pt_pax_flags;
56633+ else if (ei_pax_flags != PAX_PARSE_FLAGS_FALLBACK)
56634+ pax_flags = ei_pax_flags;
56635+
56636+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_PAX_SEGMEXEC)
56637+ if ((pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) == (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) {
56638+ if ((__supported_pte_mask & _PAGE_NX))
56639+ pax_flags &= ~MF_PAX_SEGMEXEC;
56640+ else
56641+ pax_flags &= ~MF_PAX_PAGEEXEC;
56642+ }
56643+#endif
56644+
56645+ if (0 > pax_check_flags(&pax_flags))
56646+ return -EINVAL;
56647+
56648+ current->mm->pax_flags = pax_flags;
56649+ return 0;
56650+}
56651+#endif
56652+
56653 /*
56654 * These are the functions used to load ELF style executables and shared
56655 * libraries. There is no binary dependent code anywhere else.
56656@@ -556,6 +917,11 @@ static unsigned long randomize_stack_top(unsigned long stack_top)
56657 {
56658 unsigned int random_variable = 0;
56659
56660+#ifdef CONFIG_PAX_RANDUSTACK
56661+ if (current->mm->pax_flags & MF_PAX_RANDMMAP)
56662+ return stack_top - current->mm->delta_stack;
56663+#endif
56664+
56665 if ((current->flags & PF_RANDOMIZE) &&
56666 !(current->personality & ADDR_NO_RANDOMIZE)) {
56667 random_variable = get_random_int() & STACK_RND_MASK;
56668@@ -574,7 +940,7 @@ static int load_elf_binary(struct linux_binprm *bprm)
56669 unsigned long load_addr = 0, load_bias = 0;
56670 int load_addr_set = 0;
56671 char * elf_interpreter = NULL;
56672- unsigned long error;
56673+ unsigned long error = 0;
56674 struct elf_phdr *elf_ppnt, *elf_phdata;
56675 unsigned long elf_bss, elf_brk;
56676 int retval, i;
56677@@ -589,6 +955,7 @@ static int load_elf_binary(struct linux_binprm *bprm)
56678 struct elfhdr elf_ex;
56679 struct elfhdr interp_elf_ex;
56680 } *loc;
56681+ unsigned long pax_task_size;
56682
56683 loc = kmalloc(sizeof(*loc), GFP_KERNEL);
56684 if (!loc) {
56685@@ -726,6 +1093,77 @@ static int load_elf_binary(struct linux_binprm *bprm)
56686 /* Do this immediately, since STACK_TOP as used in setup_arg_pages
56687 may depend on the personality. */
56688 SET_PERSONALITY(loc->elf_ex);
56689+
56690+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
56691+ current->mm->pax_flags = 0UL;
56692+#endif
56693+
56694+#ifdef CONFIG_PAX_DLRESOLVE
56695+ current->mm->call_dl_resolve = 0UL;
56696+#endif
56697+
56698+#if defined(CONFIG_PPC32) && defined(CONFIG_PAX_EMUSIGRT)
56699+ current->mm->call_syscall = 0UL;
56700+#endif
56701+
56702+#ifdef CONFIG_PAX_ASLR
56703+ current->mm->delta_mmap = 0UL;
56704+ current->mm->delta_stack = 0UL;
56705+#endif
56706+
56707+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
56708+ if (0 > pax_parse_pax_flags(&loc->elf_ex, elf_phdata, bprm->file)) {
56709+ send_sig(SIGKILL, current, 0);
56710+ goto out_free_dentry;
56711+ }
56712+#endif
56713+
56714+#ifdef CONFIG_PAX_HAVE_ACL_FLAGS
56715+ pax_set_initial_flags(bprm);
56716+#elif defined(CONFIG_PAX_HOOK_ACL_FLAGS)
56717+ if (pax_set_initial_flags_func)
56718+ (pax_set_initial_flags_func)(bprm);
56719+#endif
56720+
56721+#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT
56722+ if ((current->mm->pax_flags & MF_PAX_PAGEEXEC) && !(__supported_pte_mask & _PAGE_NX)) {
56723+ current->mm->context.user_cs_limit = PAGE_SIZE;
56724+ current->mm->def_flags |= VM_PAGEEXEC | VM_NOHUGEPAGE;
56725+ }
56726+#endif
56727+
56728+#ifdef CONFIG_PAX_SEGMEXEC
56729+ if (current->mm->pax_flags & MF_PAX_SEGMEXEC) {
56730+ current->mm->context.user_cs_base = SEGMEXEC_TASK_SIZE;
56731+ current->mm->context.user_cs_limit = TASK_SIZE-SEGMEXEC_TASK_SIZE;
56732+ pax_task_size = SEGMEXEC_TASK_SIZE;
56733+ current->mm->def_flags |= VM_NOHUGEPAGE;
56734+ } else
56735+#endif
56736+
56737+ pax_task_size = TASK_SIZE;
56738+
56739+#if defined(CONFIG_ARCH_TRACK_EXEC_LIMIT) || defined(CONFIG_PAX_SEGMEXEC)
56740+ if (current->mm->pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) {
56741+ set_user_cs(current->mm->context.user_cs_base, current->mm->context.user_cs_limit, get_cpu());
56742+ put_cpu();
56743+ }
56744+#endif
56745+
56746+#ifdef CONFIG_PAX_ASLR
56747+ if (current->mm->pax_flags & MF_PAX_RANDMMAP) {
56748+ current->mm->delta_mmap = (pax_get_random_long() & ((1UL << PAX_DELTA_MMAP_LEN)-1)) << PAGE_SHIFT;
56749+ current->mm->delta_stack = (pax_get_random_long() & ((1UL << PAX_DELTA_STACK_LEN)-1)) << PAGE_SHIFT;
56750+ }
56751+#endif
56752+
56753+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
56754+ if (current->mm->pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) {
56755+ executable_stack = EXSTACK_DISABLE_X;
56756+ current->personality &= ~READ_IMPLIES_EXEC;
56757+ } else
56758+#endif
56759+
56760 if (elf_read_implies_exec(loc->elf_ex, executable_stack))
56761 current->personality |= READ_IMPLIES_EXEC;
56762
56763@@ -815,6 +1253,20 @@ static int load_elf_binary(struct linux_binprm *bprm)
56764 #else
56765 load_bias = ELF_PAGESTART(ELF_ET_DYN_BASE - vaddr);
56766 #endif
56767+
56768+#ifdef CONFIG_PAX_RANDMMAP
56769+ /* PaX: randomize base address at the default exe base if requested */
56770+ if ((current->mm->pax_flags & MF_PAX_RANDMMAP) && elf_interpreter) {
56771+#ifdef CONFIG_SPARC64
56772+ load_bias = (pax_get_random_long() & ((1UL << PAX_DELTA_MMAP_LEN) - 1)) << (PAGE_SHIFT+1);
56773+#else
56774+ load_bias = (pax_get_random_long() & ((1UL << PAX_DELTA_MMAP_LEN) - 1)) << PAGE_SHIFT;
56775+#endif
56776+ load_bias = ELF_PAGESTART(PAX_ELF_ET_DYN_BASE - vaddr + load_bias);
56777+ elf_flags |= MAP_FIXED;
56778+ }
56779+#endif
56780+
56781 }
56782
56783 error = elf_map(bprm->file, load_bias + vaddr, elf_ppnt,
56784@@ -847,9 +1299,9 @@ static int load_elf_binary(struct linux_binprm *bprm)
56785 * allowed task size. Note that p_filesz must always be
56786 * <= p_memsz so it is only necessary to check p_memsz.
56787 */
56788- if (BAD_ADDR(k) || elf_ppnt->p_filesz > elf_ppnt->p_memsz ||
56789- elf_ppnt->p_memsz > TASK_SIZE ||
56790- TASK_SIZE - elf_ppnt->p_memsz < k) {
56791+ if (k >= pax_task_size || elf_ppnt->p_filesz > elf_ppnt->p_memsz ||
56792+ elf_ppnt->p_memsz > pax_task_size ||
56793+ pax_task_size - elf_ppnt->p_memsz < k) {
56794 /* set_brk can never work. Avoid overflows. */
56795 send_sig(SIGKILL, current, 0);
56796 retval = -EINVAL;
56797@@ -888,17 +1340,45 @@ static int load_elf_binary(struct linux_binprm *bprm)
56798 goto out_free_dentry;
56799 }
56800 if (likely(elf_bss != elf_brk) && unlikely(padzero(elf_bss))) {
56801- send_sig(SIGSEGV, current, 0);
56802- retval = -EFAULT; /* Nobody gets to see this, but.. */
56803- goto out_free_dentry;
56804+ /*
56805+ * This bss-zeroing can fail if the ELF
56806+ * file specifies odd protections. So
56807+ * we don't check the return value
56808+ */
56809 }
56810
56811+#ifdef CONFIG_PAX_RANDMMAP
56812+ if (current->mm->pax_flags & MF_PAX_RANDMMAP) {
56813+ unsigned long start, size, flags;
56814+ vm_flags_t vm_flags;
56815+
56816+ start = ELF_PAGEALIGN(elf_brk);
56817+ size = PAGE_SIZE + ((pax_get_random_long() & ((1UL << 22) - 1UL)) << 4);
56818+ flags = MAP_FIXED | MAP_PRIVATE;
56819+ vm_flags = VM_DONTEXPAND | VM_DONTDUMP;
56820+
56821+ down_write(&current->mm->mmap_sem);
56822+ start = get_unmapped_area(NULL, start, PAGE_ALIGN(size), 0, flags);
56823+ retval = -ENOMEM;
56824+ if (!IS_ERR_VALUE(start) && !find_vma_intersection(current->mm, start, start + size + PAGE_SIZE)) {
56825+// if (current->personality & ADDR_NO_RANDOMIZE)
56826+// vm_flags |= VM_READ | VM_MAYREAD;
56827+ start = mmap_region(NULL, start, PAGE_ALIGN(size), vm_flags, 0);
56828+ retval = IS_ERR_VALUE(start) ? start : 0;
56829+ }
56830+ up_write(&current->mm->mmap_sem);
56831+ if (retval == 0)
56832+ retval = set_brk(start + size, start + size + PAGE_SIZE);
56833+ if (retval < 0) {
56834+ send_sig(SIGKILL, current, 0);
56835+ goto out_free_dentry;
56836+ }
56837+ }
56838+#endif
56839+
56840 if (elf_interpreter) {
56841- unsigned long interp_map_addr = 0;
56842-
56843 elf_entry = load_elf_interp(&loc->interp_elf_ex,
56844 interpreter,
56845- &interp_map_addr,
56846 load_bias);
56847 if (!IS_ERR((void *)elf_entry)) {
56848 /*
56849@@ -1122,7 +1602,7 @@ static bool always_dump_vma(struct vm_area_struct *vma)
56850 * Decide what to dump of a segment, part, all or none.
56851 */
56852 static unsigned long vma_dump_size(struct vm_area_struct *vma,
56853- unsigned long mm_flags)
56854+ unsigned long mm_flags, long signr)
56855 {
56856 #define FILTER(type) (mm_flags & (1UL << MMF_DUMP_##type))
56857
56858@@ -1160,7 +1640,7 @@ static unsigned long vma_dump_size(struct vm_area_struct *vma,
56859 if (vma->vm_file == NULL)
56860 return 0;
56861
56862- if (FILTER(MAPPED_PRIVATE))
56863+ if (signr == SIGKILL || FILTER(MAPPED_PRIVATE))
56864 goto whole;
56865
56866 /*
56867@@ -1367,9 +1847,9 @@ static void fill_auxv_note(struct memelfnote *note, struct mm_struct *mm)
56868 {
56869 elf_addr_t *auxv = (elf_addr_t *) mm->saved_auxv;
56870 int i = 0;
56871- do
56872+ do {
56873 i += 2;
56874- while (auxv[i - 2] != AT_NULL);
56875+ } while (auxv[i - 2] != AT_NULL);
56876 fill_note(note, "CORE", NT_AUXV, i * sizeof(elf_addr_t), auxv);
56877 }
56878
56879@@ -1378,7 +1858,7 @@ static void fill_siginfo_note(struct memelfnote *note, user_siginfo_t *csigdata,
56880 {
56881 mm_segment_t old_fs = get_fs();
56882 set_fs(KERNEL_DS);
56883- copy_siginfo_to_user((user_siginfo_t __user *) csigdata, siginfo);
56884+ copy_siginfo_to_user((user_siginfo_t __force_user *) csigdata, siginfo);
56885 set_fs(old_fs);
56886 fill_note(note, "CORE", NT_SIGINFO, sizeof(*csigdata), csigdata);
56887 }
56888@@ -2002,14 +2482,14 @@ static void fill_extnum_info(struct elfhdr *elf, struct elf_shdr *shdr4extnum,
56889 }
56890
56891 static size_t elf_core_vma_data_size(struct vm_area_struct *gate_vma,
56892- unsigned long mm_flags)
56893+ struct coredump_params *cprm)
56894 {
56895 struct vm_area_struct *vma;
56896 size_t size = 0;
56897
56898 for (vma = first_vma(current, gate_vma); vma != NULL;
56899 vma = next_vma(vma, gate_vma))
56900- size += vma_dump_size(vma, mm_flags);
56901+ size += vma_dump_size(vma, cprm->mm_flags, cprm->siginfo->si_signo);
56902 return size;
56903 }
56904
56905@@ -2100,7 +2580,7 @@ static int elf_core_dump(struct coredump_params *cprm)
56906
56907 dataoff = offset = roundup(offset, ELF_EXEC_PAGESIZE);
56908
56909- offset += elf_core_vma_data_size(gate_vma, cprm->mm_flags);
56910+ offset += elf_core_vma_data_size(gate_vma, cprm);
56911 offset += elf_core_extra_data_size();
56912 e_shoff = offset;
56913
56914@@ -2128,7 +2608,7 @@ static int elf_core_dump(struct coredump_params *cprm)
56915 phdr.p_offset = offset;
56916 phdr.p_vaddr = vma->vm_start;
56917 phdr.p_paddr = 0;
56918- phdr.p_filesz = vma_dump_size(vma, cprm->mm_flags);
56919+ phdr.p_filesz = vma_dump_size(vma, cprm->mm_flags, cprm->siginfo->si_signo);
56920 phdr.p_memsz = vma->vm_end - vma->vm_start;
56921 offset += phdr.p_filesz;
56922 phdr.p_flags = vma->vm_flags & VM_READ ? PF_R : 0;
56923@@ -2161,7 +2641,7 @@ static int elf_core_dump(struct coredump_params *cprm)
56924 unsigned long addr;
56925 unsigned long end;
56926
56927- end = vma->vm_start + vma_dump_size(vma, cprm->mm_flags);
56928+ end = vma->vm_start + vma_dump_size(vma, cprm->mm_flags, cprm->siginfo->si_signo);
56929
56930 for (addr = vma->vm_start; addr < end; addr += PAGE_SIZE) {
56931 struct page *page;
56932@@ -2202,6 +2682,167 @@ out:
56933
56934 #endif /* CONFIG_ELF_CORE */
56935
56936+#ifdef CONFIG_PAX_MPROTECT
56937+/* PaX: non-PIC ELF libraries need relocations on their executable segments
56938+ * therefore we'll grant them VM_MAYWRITE once during their life. Similarly
56939+ * we'll remove VM_MAYWRITE for good on RELRO segments.
56940+ *
56941+ * The checks favour ld-linux.so behaviour which operates on a per ELF segment
56942+ * basis because we want to allow the common case and not the special ones.
56943+ */
56944+static void elf_handle_mprotect(struct vm_area_struct *vma, unsigned long newflags)
56945+{
56946+ struct elfhdr elf_h;
56947+ struct elf_phdr elf_p;
56948+ unsigned long i;
56949+ unsigned long oldflags;
56950+ bool is_textrel_rw, is_textrel_rx, is_relro;
56951+
56952+ if (!(vma->vm_mm->pax_flags & MF_PAX_MPROTECT) || !vma->vm_file)
56953+ return;
56954+
56955+ oldflags = vma->vm_flags & (VM_MAYEXEC | VM_MAYWRITE | VM_MAYREAD | VM_EXEC | VM_WRITE | VM_READ);
56956+ newflags &= VM_MAYEXEC | VM_MAYWRITE | VM_MAYREAD | VM_EXEC | VM_WRITE | VM_READ;
56957+
56958+#ifdef CONFIG_PAX_ELFRELOCS
56959+ /* possible TEXTREL */
56960+ is_textrel_rw = !vma->anon_vma && oldflags == (VM_MAYEXEC | VM_MAYREAD | VM_EXEC | VM_READ) && newflags == (VM_WRITE | VM_READ);
56961+ is_textrel_rx = vma->anon_vma && oldflags == (VM_MAYEXEC | VM_MAYWRITE | VM_MAYREAD | VM_WRITE | VM_READ) && newflags == (VM_EXEC | VM_READ);
56962+#else
56963+ is_textrel_rw = false;
56964+ is_textrel_rx = false;
56965+#endif
56966+
56967+ /* possible RELRO */
56968+ is_relro = vma->anon_vma && oldflags == (VM_MAYWRITE | VM_MAYREAD | VM_READ) && newflags == (VM_MAYWRITE | VM_MAYREAD | VM_READ);
56969+
56970+ if (!is_textrel_rw && !is_textrel_rx && !is_relro)
56971+ return;
56972+
56973+ if (sizeof(elf_h) != kernel_read(vma->vm_file, 0UL, (char *)&elf_h, sizeof(elf_h)) ||
56974+ memcmp(elf_h.e_ident, ELFMAG, SELFMAG) ||
56975+
56976+#ifdef CONFIG_PAX_ETEXECRELOCS
56977+ ((is_textrel_rw || is_textrel_rx) && (elf_h.e_type != ET_DYN && elf_h.e_type != ET_EXEC)) ||
56978+#else
56979+ ((is_textrel_rw || is_textrel_rx) && elf_h.e_type != ET_DYN) ||
56980+#endif
56981+
56982+ (is_relro && (elf_h.e_type != ET_DYN && elf_h.e_type != ET_EXEC)) ||
56983+ !elf_check_arch(&elf_h) ||
56984+ elf_h.e_phentsize != sizeof(struct elf_phdr) ||
56985+ elf_h.e_phnum > 65536UL / sizeof(struct elf_phdr))
56986+ return;
56987+
56988+ for (i = 0UL; i < elf_h.e_phnum; i++) {
56989+ if (sizeof(elf_p) != kernel_read(vma->vm_file, elf_h.e_phoff + i*sizeof(elf_p), (char *)&elf_p, sizeof(elf_p)))
56990+ return;
56991+ switch (elf_p.p_type) {
56992+ case PT_DYNAMIC:
56993+ if (!is_textrel_rw && !is_textrel_rx)
56994+ continue;
56995+ i = 0UL;
56996+ while ((i+1) * sizeof(elf_dyn) <= elf_p.p_filesz) {
56997+ elf_dyn dyn;
56998+
56999+ if (sizeof(dyn) != kernel_read(vma->vm_file, elf_p.p_offset + i*sizeof(dyn), (char *)&dyn, sizeof(dyn)))
57000+ break;
57001+ if (dyn.d_tag == DT_NULL)
57002+ break;
57003+ if (dyn.d_tag == DT_TEXTREL || (dyn.d_tag == DT_FLAGS && (dyn.d_un.d_val & DF_TEXTREL))) {
57004+ gr_log_textrel(vma);
57005+ if (is_textrel_rw)
57006+ vma->vm_flags |= VM_MAYWRITE;
57007+ else
57008+ /* PaX: disallow write access after relocs are done, hopefully noone else needs it... */
57009+ vma->vm_flags &= ~VM_MAYWRITE;
57010+ break;
57011+ }
57012+ i++;
57013+ }
57014+ is_textrel_rw = false;
57015+ is_textrel_rx = false;
57016+ continue;
57017+
57018+ case PT_GNU_RELRO:
57019+ if (!is_relro)
57020+ continue;
57021+ if ((elf_p.p_offset >> PAGE_SHIFT) == vma->vm_pgoff && ELF_PAGEALIGN(elf_p.p_memsz) == vma->vm_end - vma->vm_start)
57022+ vma->vm_flags &= ~VM_MAYWRITE;
57023+ is_relro = false;
57024+ continue;
57025+
57026+#ifdef CONFIG_PAX_PT_PAX_FLAGS
57027+ case PT_PAX_FLAGS: {
57028+ const char *msg_mprotect = "", *msg_emutramp = "";
57029+ char *buffer_lib, *buffer_exe;
57030+
57031+ if (elf_p.p_flags & PF_NOMPROTECT)
57032+ msg_mprotect = "MPROTECT disabled";
57033+
57034+#ifdef CONFIG_PAX_EMUTRAMP
57035+ if (!(vma->vm_mm->pax_flags & MF_PAX_EMUTRAMP) && !(elf_p.p_flags & PF_NOEMUTRAMP))
57036+ msg_emutramp = "EMUTRAMP enabled";
57037+#endif
57038+
57039+ if (!msg_mprotect[0] && !msg_emutramp[0])
57040+ continue;
57041+
57042+ if (!printk_ratelimit())
57043+ continue;
57044+
57045+ buffer_lib = (char *)__get_free_page(GFP_KERNEL);
57046+ buffer_exe = (char *)__get_free_page(GFP_KERNEL);
57047+ if (buffer_lib && buffer_exe) {
57048+ char *path_lib, *path_exe;
57049+
57050+ path_lib = pax_get_path(&vma->vm_file->f_path, buffer_lib, PAGE_SIZE);
57051+ path_exe = pax_get_path(&vma->vm_mm->exe_file->f_path, buffer_exe, PAGE_SIZE);
57052+
57053+ pr_info("PAX: %s wants %s%s%s on %s\n", path_lib, msg_mprotect,
57054+ (msg_mprotect[0] && msg_emutramp[0] ? " and " : ""), msg_emutramp, path_exe);
57055+
57056+ }
57057+ free_page((unsigned long)buffer_exe);
57058+ free_page((unsigned long)buffer_lib);
57059+ continue;
57060+ }
57061+#endif
57062+
57063+ }
57064+ }
57065+}
57066+#endif
57067+
57068+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
57069+
57070+extern int grsec_enable_log_rwxmaps;
57071+
57072+static void elf_handle_mmap(struct file *file)
57073+{
57074+ struct elfhdr elf_h;
57075+ struct elf_phdr elf_p;
57076+ unsigned long i;
57077+
57078+ if (!grsec_enable_log_rwxmaps)
57079+ return;
57080+
57081+ if (sizeof(elf_h) != kernel_read(file, 0UL, (char *)&elf_h, sizeof(elf_h)) ||
57082+ memcmp(elf_h.e_ident, ELFMAG, SELFMAG) ||
57083+ (elf_h.e_type != ET_DYN && elf_h.e_type != ET_EXEC) || !elf_check_arch(&elf_h) ||
57084+ elf_h.e_phentsize != sizeof(struct elf_phdr) ||
57085+ elf_h.e_phnum > 65536UL / sizeof(struct elf_phdr))
57086+ return;
57087+
57088+ for (i = 0UL; i < elf_h.e_phnum; i++) {
57089+ if (sizeof(elf_p) != kernel_read(file, elf_h.e_phoff + i*sizeof(elf_p), (char *)&elf_p, sizeof(elf_p)))
57090+ return;
57091+ if (elf_p.p_type == PT_GNU_STACK && (elf_p.p_flags & PF_X))
57092+ gr_log_ptgnustack(file);
57093+ }
57094+}
57095+#endif
57096+
57097 static int __init init_elf_binfmt(void)
57098 {
57099 register_binfmt(&elf_format);
57100diff --git a/fs/bio.c b/fs/bio.c
57101index 6f0362b..26a7496 100644
57102--- a/fs/bio.c
57103+++ b/fs/bio.c
57104@@ -1144,7 +1144,7 @@ struct bio *bio_copy_user_iov(struct request_queue *q,
57105 /*
57106 * Overflow, abort
57107 */
57108- if (end < start)
57109+ if (end < start || end - start > INT_MAX - nr_pages)
57110 return ERR_PTR(-EINVAL);
57111
57112 nr_pages += end - start;
57113@@ -1278,7 +1278,7 @@ static struct bio *__bio_map_user_iov(struct request_queue *q,
57114 /*
57115 * Overflow, abort
57116 */
57117- if (end < start)
57118+ if (end < start || end - start > INT_MAX - nr_pages)
57119 return ERR_PTR(-EINVAL);
57120
57121 nr_pages += end - start;
57122@@ -1540,7 +1540,7 @@ static void bio_copy_kern_endio(struct bio *bio, int err)
57123 const int read = bio_data_dir(bio) == READ;
57124 struct bio_map_data *bmd = bio->bi_private;
57125 int i;
57126- char *p = bmd->sgvecs[0].iov_base;
57127+ char *p = (char __force_kernel *)bmd->sgvecs[0].iov_base;
57128
57129 bio_for_each_segment_all(bvec, bio, i) {
57130 char *addr = page_address(bvec->bv_page);
57131diff --git a/fs/block_dev.c b/fs/block_dev.c
57132index 552a8d1..d51ccf3 100644
57133--- a/fs/block_dev.c
57134+++ b/fs/block_dev.c
57135@@ -637,7 +637,7 @@ static bool bd_may_claim(struct block_device *bdev, struct block_device *whole,
57136 else if (bdev->bd_contains == bdev)
57137 return true; /* is a whole device which isn't held */
57138
57139- else if (whole->bd_holder == bd_may_claim)
57140+ else if (whole->bd_holder == (void *)bd_may_claim)
57141 return true; /* is a partition of a device that is being partitioned */
57142 else if (whole->bd_holder != NULL)
57143 return false; /* is a partition of a held device */
57144diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
57145index 1bcfcdb..e942132 100644
57146--- a/fs/btrfs/ctree.c
57147+++ b/fs/btrfs/ctree.c
57148@@ -1216,9 +1216,12 @@ static noinline int __btrfs_cow_block(struct btrfs_trans_handle *trans,
57149 free_extent_buffer(buf);
57150 add_root_to_dirty_list(root);
57151 } else {
57152- if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID)
57153- parent_start = parent->start;
57154- else
57155+ if (root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) {
57156+ if (parent)
57157+ parent_start = parent->start;
57158+ else
57159+ parent_start = 0;
57160+ } else
57161 parent_start = 0;
57162
57163 WARN_ON(trans->transid != btrfs_header_generation(parent));
57164diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
57165index 33e561a..16df7ae 100644
57166--- a/fs/btrfs/delayed-inode.c
57167+++ b/fs/btrfs/delayed-inode.c
57168@@ -459,7 +459,7 @@ static int __btrfs_add_delayed_deletion_item(struct btrfs_delayed_node *node,
57169
57170 static void finish_one_item(struct btrfs_delayed_root *delayed_root)
57171 {
57172- int seq = atomic_inc_return(&delayed_root->items_seq);
57173+ int seq = atomic_inc_return_unchecked(&delayed_root->items_seq);
57174 if ((atomic_dec_return(&delayed_root->items) <
57175 BTRFS_DELAYED_BACKGROUND || seq % BTRFS_DELAYED_BATCH == 0) &&
57176 waitqueue_active(&delayed_root->wait))
57177@@ -1409,7 +1409,7 @@ void btrfs_assert_delayed_root_empty(struct btrfs_root *root)
57178
57179 static int could_end_wait(struct btrfs_delayed_root *delayed_root, int seq)
57180 {
57181- int val = atomic_read(&delayed_root->items_seq);
57182+ int val = atomic_read_unchecked(&delayed_root->items_seq);
57183
57184 if (val < seq || val >= seq + BTRFS_DELAYED_BATCH)
57185 return 1;
57186@@ -1433,7 +1433,7 @@ void btrfs_balance_delayed_items(struct btrfs_root *root)
57187 int seq;
57188 int ret;
57189
57190- seq = atomic_read(&delayed_root->items_seq);
57191+ seq = atomic_read_unchecked(&delayed_root->items_seq);
57192
57193 ret = btrfs_wq_run_delayed_node(delayed_root, root, 0);
57194 if (ret)
57195diff --git a/fs/btrfs/delayed-inode.h b/fs/btrfs/delayed-inode.h
57196index f70119f..ab5894d 100644
57197--- a/fs/btrfs/delayed-inode.h
57198+++ b/fs/btrfs/delayed-inode.h
57199@@ -43,7 +43,7 @@ struct btrfs_delayed_root {
57200 */
57201 struct list_head prepare_list;
57202 atomic_t items; /* for delayed items */
57203- atomic_t items_seq; /* for delayed items */
57204+ atomic_unchecked_t items_seq; /* for delayed items */
57205 int nodes; /* for delayed nodes */
57206 wait_queue_head_t wait;
57207 };
57208@@ -90,7 +90,7 @@ static inline void btrfs_init_delayed_root(
57209 struct btrfs_delayed_root *delayed_root)
57210 {
57211 atomic_set(&delayed_root->items, 0);
57212- atomic_set(&delayed_root->items_seq, 0);
57213+ atomic_set_unchecked(&delayed_root->items_seq, 0);
57214 delayed_root->nodes = 0;
57215 spin_lock_init(&delayed_root->lock);
57216 init_waitqueue_head(&delayed_root->wait);
57217diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
57218index 2f6d7b1..f186382 100644
57219--- a/fs/btrfs/ioctl.c
57220+++ b/fs/btrfs/ioctl.c
57221@@ -3575,9 +3575,12 @@ static long btrfs_ioctl_space_info(struct btrfs_root *root, void __user *arg)
57222 for (i = 0; i < num_types; i++) {
57223 struct btrfs_space_info *tmp;
57224
57225+ /* Don't copy in more than we allocated */
57226 if (!slot_count)
57227 break;
57228
57229+ slot_count--;
57230+
57231 info = NULL;
57232 rcu_read_lock();
57233 list_for_each_entry_rcu(tmp, &root->fs_info->space_info,
57234@@ -3599,10 +3602,7 @@ static long btrfs_ioctl_space_info(struct btrfs_root *root, void __user *arg)
57235 memcpy(dest, &space, sizeof(space));
57236 dest++;
57237 space_args.total_spaces++;
57238- slot_count--;
57239 }
57240- if (!slot_count)
57241- break;
57242 }
57243 up_read(&info->groups_sem);
57244 }
57245diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
57246index 9601d25..2896d6c 100644
57247--- a/fs/btrfs/super.c
57248+++ b/fs/btrfs/super.c
57249@@ -270,7 +270,7 @@ void __btrfs_abort_transaction(struct btrfs_trans_handle *trans,
57250 function, line, errstr);
57251 return;
57252 }
57253- ACCESS_ONCE(trans->transaction->aborted) = errno;
57254+ ACCESS_ONCE_RW(trans->transaction->aborted) = errno;
57255 /* Wake up anybody who may be waiting on this transaction */
57256 wake_up(&root->fs_info->transaction_wait);
57257 wake_up(&root->fs_info->transaction_blocked_wait);
57258diff --git a/fs/btrfs/sysfs.c b/fs/btrfs/sysfs.c
57259index 4825cd2..b2fe768 100644
57260--- a/fs/btrfs/sysfs.c
57261+++ b/fs/btrfs/sysfs.c
57262@@ -438,7 +438,7 @@ static int addrm_unknown_feature_attrs(struct btrfs_fs_info *fs_info, bool add)
57263 for (set = 0; set < FEAT_MAX; set++) {
57264 int i;
57265 struct attribute *attrs[2];
57266- struct attribute_group agroup = {
57267+ attribute_group_no_const agroup = {
57268 .name = "features",
57269 .attrs = attrs,
57270 };
57271diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
57272index e2f45fc..b036909 100644
57273--- a/fs/btrfs/tree-log.c
57274+++ b/fs/btrfs/tree-log.c
57275@@ -2533,7 +2533,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
57276 blk_finish_plug(&plug);
57277 btrfs_abort_transaction(trans, root, ret);
57278 btrfs_free_logged_extents(log, log_transid);
57279- ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) =
57280+ ACCESS_ONCE_RW(root->fs_info->last_trans_log_full_commit) =
57281 trans->transid;
57282 mutex_unlock(&root->log_mutex);
57283 goto out;
57284@@ -2577,7 +2577,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
57285 list_del_init(&root_log_ctx.list);
57286
57287 blk_finish_plug(&plug);
57288- ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) =
57289+ ACCESS_ONCE_RW(root->fs_info->last_trans_log_full_commit) =
57290 trans->transid;
57291 if (ret != -ENOSPC) {
57292 btrfs_abort_transaction(trans, root, ret);
57293@@ -2622,7 +2622,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
57294 * now that we've moved on to the tree of log tree roots,
57295 * check the full commit flag again
57296 */
57297- if (ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) ==
57298+ if (ACCESS_ONCE_RW(root->fs_info->last_trans_log_full_commit) ==
57299 trans->transid) {
57300 blk_finish_plug(&plug);
57301 btrfs_wait_marked_extents(log, &log->dirty_log_pages, mark);
57302@@ -2637,7 +2637,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
57303 EXTENT_DIRTY | EXTENT_NEW);
57304 blk_finish_plug(&plug);
57305 if (ret) {
57306- ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) =
57307+ ACCESS_ONCE_RW(root->fs_info->last_trans_log_full_commit) =
57308 trans->transid;
57309 btrfs_abort_transaction(trans, root, ret);
57310 btrfs_free_logged_extents(log, log_transid);
57311@@ -2667,7 +2667,7 @@ int btrfs_sync_log(struct btrfs_trans_handle *trans,
57312 */
57313 ret = write_ctree_super(trans, root->fs_info->tree_root, 1);
57314 if (ret) {
57315- ACCESS_ONCE(root->fs_info->last_trans_log_full_commit) =
57316+ ACCESS_ONCE_RW(root->fs_info->last_trans_log_full_commit) =
57317 trans->transid;
57318 btrfs_abort_transaction(trans, root, ret);
57319 goto out_wake_log_root;
57320diff --git a/fs/buffer.c b/fs/buffer.c
57321index 9ddb9fc..7aa2487 100644
57322--- a/fs/buffer.c
57323+++ b/fs/buffer.c
57324@@ -3428,7 +3428,7 @@ void __init buffer_init(void)
57325 bh_cachep = kmem_cache_create("buffer_head",
57326 sizeof(struct buffer_head), 0,
57327 (SLAB_RECLAIM_ACCOUNT|SLAB_PANIC|
57328- SLAB_MEM_SPREAD),
57329+ SLAB_MEM_SPREAD|SLAB_NO_SANITIZE),
57330 NULL);
57331
57332 /*
57333diff --git a/fs/cachefiles/bind.c b/fs/cachefiles/bind.c
57334index 5b99baf..47fffb5 100644
57335--- a/fs/cachefiles/bind.c
57336+++ b/fs/cachefiles/bind.c
57337@@ -39,13 +39,11 @@ int cachefiles_daemon_bind(struct cachefiles_cache *cache, char *args)
57338 args);
57339
57340 /* start by checking things over */
57341- ASSERT(cache->fstop_percent >= 0 &&
57342- cache->fstop_percent < cache->fcull_percent &&
57343+ ASSERT(cache->fstop_percent < cache->fcull_percent &&
57344 cache->fcull_percent < cache->frun_percent &&
57345 cache->frun_percent < 100);
57346
57347- ASSERT(cache->bstop_percent >= 0 &&
57348- cache->bstop_percent < cache->bcull_percent &&
57349+ ASSERT(cache->bstop_percent < cache->bcull_percent &&
57350 cache->bcull_percent < cache->brun_percent &&
57351 cache->brun_percent < 100);
57352
57353diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c
57354index 0a1467b..6a53245 100644
57355--- a/fs/cachefiles/daemon.c
57356+++ b/fs/cachefiles/daemon.c
57357@@ -196,7 +196,7 @@ static ssize_t cachefiles_daemon_read(struct file *file, char __user *_buffer,
57358 if (n > buflen)
57359 return -EMSGSIZE;
57360
57361- if (copy_to_user(_buffer, buffer, n) != 0)
57362+ if (n > sizeof(buffer) || copy_to_user(_buffer, buffer, n) != 0)
57363 return -EFAULT;
57364
57365 return n;
57366@@ -222,7 +222,7 @@ static ssize_t cachefiles_daemon_write(struct file *file,
57367 if (test_bit(CACHEFILES_DEAD, &cache->flags))
57368 return -EIO;
57369
57370- if (datalen < 0 || datalen > PAGE_SIZE - 1)
57371+ if (datalen > PAGE_SIZE - 1)
57372 return -EOPNOTSUPP;
57373
57374 /* drag the command string into the kernel so we can parse it */
57375@@ -386,7 +386,7 @@ static int cachefiles_daemon_fstop(struct cachefiles_cache *cache, char *args)
57376 if (args[0] != '%' || args[1] != '\0')
57377 return -EINVAL;
57378
57379- if (fstop < 0 || fstop >= cache->fcull_percent)
57380+ if (fstop >= cache->fcull_percent)
57381 return cachefiles_daemon_range_error(cache, args);
57382
57383 cache->fstop_percent = fstop;
57384@@ -458,7 +458,7 @@ static int cachefiles_daemon_bstop(struct cachefiles_cache *cache, char *args)
57385 if (args[0] != '%' || args[1] != '\0')
57386 return -EINVAL;
57387
57388- if (bstop < 0 || bstop >= cache->bcull_percent)
57389+ if (bstop >= cache->bcull_percent)
57390 return cachefiles_daemon_range_error(cache, args);
57391
57392 cache->bstop_percent = bstop;
57393diff --git a/fs/cachefiles/internal.h b/fs/cachefiles/internal.h
57394index 5349473..d6c0b93 100644
57395--- a/fs/cachefiles/internal.h
57396+++ b/fs/cachefiles/internal.h
57397@@ -59,7 +59,7 @@ struct cachefiles_cache {
57398 wait_queue_head_t daemon_pollwq; /* poll waitqueue for daemon */
57399 struct rb_root active_nodes; /* active nodes (can't be culled) */
57400 rwlock_t active_lock; /* lock for active_nodes */
57401- atomic_t gravecounter; /* graveyard uniquifier */
57402+ atomic_unchecked_t gravecounter; /* graveyard uniquifier */
57403 unsigned frun_percent; /* when to stop culling (% files) */
57404 unsigned fcull_percent; /* when to start culling (% files) */
57405 unsigned fstop_percent; /* when to stop allocating (% files) */
57406@@ -171,19 +171,19 @@ extern int cachefiles_check_in_use(struct cachefiles_cache *cache,
57407 * proc.c
57408 */
57409 #ifdef CONFIG_CACHEFILES_HISTOGRAM
57410-extern atomic_t cachefiles_lookup_histogram[HZ];
57411-extern atomic_t cachefiles_mkdir_histogram[HZ];
57412-extern atomic_t cachefiles_create_histogram[HZ];
57413+extern atomic_unchecked_t cachefiles_lookup_histogram[HZ];
57414+extern atomic_unchecked_t cachefiles_mkdir_histogram[HZ];
57415+extern atomic_unchecked_t cachefiles_create_histogram[HZ];
57416
57417 extern int __init cachefiles_proc_init(void);
57418 extern void cachefiles_proc_cleanup(void);
57419 static inline
57420-void cachefiles_hist(atomic_t histogram[], unsigned long start_jif)
57421+void cachefiles_hist(atomic_unchecked_t histogram[], unsigned long start_jif)
57422 {
57423 unsigned long jif = jiffies - start_jif;
57424 if (jif >= HZ)
57425 jif = HZ - 1;
57426- atomic_inc(&histogram[jif]);
57427+ atomic_inc_unchecked(&histogram[jif]);
57428 }
57429
57430 #else
57431diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c
57432index c0a6817..ea811166 100644
57433--- a/fs/cachefiles/namei.c
57434+++ b/fs/cachefiles/namei.c
57435@@ -317,7 +317,7 @@ try_again:
57436 /* first step is to make up a grave dentry in the graveyard */
57437 sprintf(nbuffer, "%08x%08x",
57438 (uint32_t) get_seconds(),
57439- (uint32_t) atomic_inc_return(&cache->gravecounter));
57440+ (uint32_t) atomic_inc_return_unchecked(&cache->gravecounter));
57441
57442 /* do the multiway lock magic */
57443 trap = lock_rename(cache->graveyard, dir);
57444diff --git a/fs/cachefiles/proc.c b/fs/cachefiles/proc.c
57445index eccd339..4c1d995 100644
57446--- a/fs/cachefiles/proc.c
57447+++ b/fs/cachefiles/proc.c
57448@@ -14,9 +14,9 @@
57449 #include <linux/seq_file.h>
57450 #include "internal.h"
57451
57452-atomic_t cachefiles_lookup_histogram[HZ];
57453-atomic_t cachefiles_mkdir_histogram[HZ];
57454-atomic_t cachefiles_create_histogram[HZ];
57455+atomic_unchecked_t cachefiles_lookup_histogram[HZ];
57456+atomic_unchecked_t cachefiles_mkdir_histogram[HZ];
57457+atomic_unchecked_t cachefiles_create_histogram[HZ];
57458
57459 /*
57460 * display the latency histogram
57461@@ -35,9 +35,9 @@ static int cachefiles_histogram_show(struct seq_file *m, void *v)
57462 return 0;
57463 default:
57464 index = (unsigned long) v - 3;
57465- x = atomic_read(&cachefiles_lookup_histogram[index]);
57466- y = atomic_read(&cachefiles_mkdir_histogram[index]);
57467- z = atomic_read(&cachefiles_create_histogram[index]);
57468+ x = atomic_read_unchecked(&cachefiles_lookup_histogram[index]);
57469+ y = atomic_read_unchecked(&cachefiles_mkdir_histogram[index]);
57470+ z = atomic_read_unchecked(&cachefiles_create_histogram[index]);
57471 if (x == 0 && y == 0 && z == 0)
57472 return 0;
57473
57474diff --git a/fs/cachefiles/rdwr.c b/fs/cachefiles/rdwr.c
57475index 4b1fb5c..0d2a699 100644
57476--- a/fs/cachefiles/rdwr.c
57477+++ b/fs/cachefiles/rdwr.c
57478@@ -943,7 +943,7 @@ int cachefiles_write_page(struct fscache_storage *op, struct page *page)
57479 old_fs = get_fs();
57480 set_fs(KERNEL_DS);
57481 ret = file->f_op->write(
57482- file, (const void __user *) data, len, &pos);
57483+ file, (const void __force_user *) data, len, &pos);
57484 set_fs(old_fs);
57485 kunmap(page);
57486 file_end_write(file);
57487diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
57488index c29d6ae..a56c4ae 100644
57489--- a/fs/ceph/dir.c
57490+++ b/fs/ceph/dir.c
57491@@ -250,7 +250,7 @@ static int ceph_readdir(struct file *file, struct dir_context *ctx)
57492 struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
57493 struct ceph_mds_client *mdsc = fsc->mdsc;
57494 unsigned frag = fpos_frag(ctx->pos);
57495- int off = fpos_off(ctx->pos);
57496+ unsigned int off = fpos_off(ctx->pos);
57497 int err;
57498 u32 ftype;
57499 struct ceph_mds_reply_info_parsed *rinfo;
57500diff --git a/fs/ceph/super.c b/fs/ceph/super.c
57501index 06150fd..192061b 100644
57502--- a/fs/ceph/super.c
57503+++ b/fs/ceph/super.c
57504@@ -895,7 +895,7 @@ static int ceph_compare_super(struct super_block *sb, void *data)
57505 /*
57506 * construct our own bdi so we can control readahead, etc.
57507 */
57508-static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0);
57509+static atomic_long_unchecked_t bdi_seq = ATOMIC_LONG_INIT(0);
57510
57511 static int ceph_register_bdi(struct super_block *sb,
57512 struct ceph_fs_client *fsc)
57513@@ -912,7 +912,7 @@ static int ceph_register_bdi(struct super_block *sb,
57514 default_backing_dev_info.ra_pages;
57515
57516 err = bdi_register(&fsc->backing_dev_info, NULL, "ceph-%ld",
57517- atomic_long_inc_return(&bdi_seq));
57518+ atomic_long_inc_return_unchecked(&bdi_seq));
57519 if (!err)
57520 sb->s_bdi = &fsc->backing_dev_info;
57521 return err;
57522diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
57523index f3ac415..3d2420c 100644
57524--- a/fs/cifs/cifs_debug.c
57525+++ b/fs/cifs/cifs_debug.c
57526@@ -286,8 +286,8 @@ static ssize_t cifs_stats_proc_write(struct file *file,
57527
57528 if (c == '1' || c == 'y' || c == 'Y' || c == '0') {
57529 #ifdef CONFIG_CIFS_STATS2
57530- atomic_set(&totBufAllocCount, 0);
57531- atomic_set(&totSmBufAllocCount, 0);
57532+ atomic_set_unchecked(&totBufAllocCount, 0);
57533+ atomic_set_unchecked(&totSmBufAllocCount, 0);
57534 #endif /* CONFIG_CIFS_STATS2 */
57535 spin_lock(&cifs_tcp_ses_lock);
57536 list_for_each(tmp1, &cifs_tcp_ses_list) {
57537@@ -300,7 +300,7 @@ static ssize_t cifs_stats_proc_write(struct file *file,
57538 tcon = list_entry(tmp3,
57539 struct cifs_tcon,
57540 tcon_list);
57541- atomic_set(&tcon->num_smbs_sent, 0);
57542+ atomic_set_unchecked(&tcon->num_smbs_sent, 0);
57543 if (server->ops->clear_stats)
57544 server->ops->clear_stats(tcon);
57545 }
57546@@ -332,8 +332,8 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v)
57547 smBufAllocCount.counter, cifs_min_small);
57548 #ifdef CONFIG_CIFS_STATS2
57549 seq_printf(m, "Total Large %d Small %d Allocations\n",
57550- atomic_read(&totBufAllocCount),
57551- atomic_read(&totSmBufAllocCount));
57552+ atomic_read_unchecked(&totBufAllocCount),
57553+ atomic_read_unchecked(&totSmBufAllocCount));
57554 #endif /* CONFIG_CIFS_STATS2 */
57555
57556 seq_printf(m, "Operations (MIDs): %d\n", atomic_read(&midCount));
57557@@ -362,7 +362,7 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v)
57558 if (tcon->need_reconnect)
57559 seq_puts(m, "\tDISCONNECTED ");
57560 seq_printf(m, "\nSMBs: %d",
57561- atomic_read(&tcon->num_smbs_sent));
57562+ atomic_read_unchecked(&tcon->num_smbs_sent));
57563 if (server->ops->print_stats)
57564 server->ops->print_stats(m, tcon);
57565 }
57566diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
57567index 5be1f997..fa1015a1 100644
57568--- a/fs/cifs/cifsfs.c
57569+++ b/fs/cifs/cifsfs.c
57570@@ -1068,7 +1068,7 @@ cifs_init_request_bufs(void)
57571 */
57572 cifs_req_cachep = kmem_cache_create("cifs_request",
57573 CIFSMaxBufSize + max_hdr_size, 0,
57574- SLAB_HWCACHE_ALIGN, NULL);
57575+ SLAB_HWCACHE_ALIGN | SLAB_USERCOPY, NULL);
57576 if (cifs_req_cachep == NULL)
57577 return -ENOMEM;
57578
57579@@ -1095,7 +1095,7 @@ cifs_init_request_bufs(void)
57580 efficient to alloc 1 per page off the slab compared to 17K (5page)
57581 alloc of large cifs buffers even when page debugging is on */
57582 cifs_sm_req_cachep = kmem_cache_create("cifs_small_rq",
57583- MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN,
57584+ MAX_CIFS_SMALL_BUFFER_SIZE, 0, SLAB_HWCACHE_ALIGN | SLAB_USERCOPY,
57585 NULL);
57586 if (cifs_sm_req_cachep == NULL) {
57587 mempool_destroy(cifs_req_poolp);
57588@@ -1180,8 +1180,8 @@ init_cifs(void)
57589 atomic_set(&bufAllocCount, 0);
57590 atomic_set(&smBufAllocCount, 0);
57591 #ifdef CONFIG_CIFS_STATS2
57592- atomic_set(&totBufAllocCount, 0);
57593- atomic_set(&totSmBufAllocCount, 0);
57594+ atomic_set_unchecked(&totBufAllocCount, 0);
57595+ atomic_set_unchecked(&totSmBufAllocCount, 0);
57596 #endif /* CONFIG_CIFS_STATS2 */
57597
57598 atomic_set(&midCount, 0);
57599diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
57600index 30f6e92..e915ba5 100644
57601--- a/fs/cifs/cifsglob.h
57602+++ b/fs/cifs/cifsglob.h
57603@@ -806,35 +806,35 @@ struct cifs_tcon {
57604 __u16 Flags; /* optional support bits */
57605 enum statusEnum tidStatus;
57606 #ifdef CONFIG_CIFS_STATS
57607- atomic_t num_smbs_sent;
57608+ atomic_unchecked_t num_smbs_sent;
57609 union {
57610 struct {
57611- atomic_t num_writes;
57612- atomic_t num_reads;
57613- atomic_t num_flushes;
57614- atomic_t num_oplock_brks;
57615- atomic_t num_opens;
57616- atomic_t num_closes;
57617- atomic_t num_deletes;
57618- atomic_t num_mkdirs;
57619- atomic_t num_posixopens;
57620- atomic_t num_posixmkdirs;
57621- atomic_t num_rmdirs;
57622- atomic_t num_renames;
57623- atomic_t num_t2renames;
57624- atomic_t num_ffirst;
57625- atomic_t num_fnext;
57626- atomic_t num_fclose;
57627- atomic_t num_hardlinks;
57628- atomic_t num_symlinks;
57629- atomic_t num_locks;
57630- atomic_t num_acl_get;
57631- atomic_t num_acl_set;
57632+ atomic_unchecked_t num_writes;
57633+ atomic_unchecked_t num_reads;
57634+ atomic_unchecked_t num_flushes;
57635+ atomic_unchecked_t num_oplock_brks;
57636+ atomic_unchecked_t num_opens;
57637+ atomic_unchecked_t num_closes;
57638+ atomic_unchecked_t num_deletes;
57639+ atomic_unchecked_t num_mkdirs;
57640+ atomic_unchecked_t num_posixopens;
57641+ atomic_unchecked_t num_posixmkdirs;
57642+ atomic_unchecked_t num_rmdirs;
57643+ atomic_unchecked_t num_renames;
57644+ atomic_unchecked_t num_t2renames;
57645+ atomic_unchecked_t num_ffirst;
57646+ atomic_unchecked_t num_fnext;
57647+ atomic_unchecked_t num_fclose;
57648+ atomic_unchecked_t num_hardlinks;
57649+ atomic_unchecked_t num_symlinks;
57650+ atomic_unchecked_t num_locks;
57651+ atomic_unchecked_t num_acl_get;
57652+ atomic_unchecked_t num_acl_set;
57653 } cifs_stats;
57654 #ifdef CONFIG_CIFS_SMB2
57655 struct {
57656- atomic_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS];
57657- atomic_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS];
57658+ atomic_unchecked_t smb2_com_sent[NUMBER_OF_SMB2_COMMANDS];
57659+ atomic_unchecked_t smb2_com_failed[NUMBER_OF_SMB2_COMMANDS];
57660 } smb2_stats;
57661 #endif /* CONFIG_CIFS_SMB2 */
57662 } stats;
57663@@ -1170,7 +1170,7 @@ convert_delimiter(char *path, char delim)
57664 }
57665
57666 #ifdef CONFIG_CIFS_STATS
57667-#define cifs_stats_inc atomic_inc
57668+#define cifs_stats_inc atomic_inc_unchecked
57669
57670 static inline void cifs_stats_bytes_written(struct cifs_tcon *tcon,
57671 unsigned int bytes)
57672@@ -1536,8 +1536,8 @@ GLOBAL_EXTERN atomic_t tconInfoReconnectCount;
57673 /* Various Debug counters */
57674 GLOBAL_EXTERN atomic_t bufAllocCount; /* current number allocated */
57675 #ifdef CONFIG_CIFS_STATS2
57676-GLOBAL_EXTERN atomic_t totBufAllocCount; /* total allocated over all time */
57677-GLOBAL_EXTERN atomic_t totSmBufAllocCount;
57678+GLOBAL_EXTERN atomic_unchecked_t totBufAllocCount; /* total allocated over all time */
57679+GLOBAL_EXTERN atomic_unchecked_t totSmBufAllocCount;
57680 #endif
57681 GLOBAL_EXTERN atomic_t smBufAllocCount;
57682 GLOBAL_EXTERN atomic_t midCount;
57683diff --git a/fs/cifs/file.c b/fs/cifs/file.c
57684index 5ed03e0..e9a3a6c 100644
57685--- a/fs/cifs/file.c
57686+++ b/fs/cifs/file.c
57687@@ -1900,10 +1900,14 @@ static int cifs_writepages(struct address_space *mapping,
57688 index = mapping->writeback_index; /* Start from prev offset */
57689 end = -1;
57690 } else {
57691- index = wbc->range_start >> PAGE_CACHE_SHIFT;
57692- end = wbc->range_end >> PAGE_CACHE_SHIFT;
57693- if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
57694+ if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX) {
57695 range_whole = true;
57696+ index = 0;
57697+ end = ULONG_MAX;
57698+ } else {
57699+ index = wbc->range_start >> PAGE_CACHE_SHIFT;
57700+ end = wbc->range_end >> PAGE_CACHE_SHIFT;
57701+ }
57702 scanned = true;
57703 }
57704 retry:
57705diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
57706index 3b0c62e..f7d090c 100644
57707--- a/fs/cifs/misc.c
57708+++ b/fs/cifs/misc.c
57709@@ -170,7 +170,7 @@ cifs_buf_get(void)
57710 memset(ret_buf, 0, buf_size + 3);
57711 atomic_inc(&bufAllocCount);
57712 #ifdef CONFIG_CIFS_STATS2
57713- atomic_inc(&totBufAllocCount);
57714+ atomic_inc_unchecked(&totBufAllocCount);
57715 #endif /* CONFIG_CIFS_STATS2 */
57716 }
57717
57718@@ -205,7 +205,7 @@ cifs_small_buf_get(void)
57719 /* memset(ret_buf, 0, sizeof(struct smb_hdr) + 27);*/
57720 atomic_inc(&smBufAllocCount);
57721 #ifdef CONFIG_CIFS_STATS2
57722- atomic_inc(&totSmBufAllocCount);
57723+ atomic_inc_unchecked(&totSmBufAllocCount);
57724 #endif /* CONFIG_CIFS_STATS2 */
57725
57726 }
57727diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
57728index d1fdfa8..94558f8 100644
57729--- a/fs/cifs/smb1ops.c
57730+++ b/fs/cifs/smb1ops.c
57731@@ -626,27 +626,27 @@ static void
57732 cifs_clear_stats(struct cifs_tcon *tcon)
57733 {
57734 #ifdef CONFIG_CIFS_STATS
57735- atomic_set(&tcon->stats.cifs_stats.num_writes, 0);
57736- atomic_set(&tcon->stats.cifs_stats.num_reads, 0);
57737- atomic_set(&tcon->stats.cifs_stats.num_flushes, 0);
57738- atomic_set(&tcon->stats.cifs_stats.num_oplock_brks, 0);
57739- atomic_set(&tcon->stats.cifs_stats.num_opens, 0);
57740- atomic_set(&tcon->stats.cifs_stats.num_posixopens, 0);
57741- atomic_set(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
57742- atomic_set(&tcon->stats.cifs_stats.num_closes, 0);
57743- atomic_set(&tcon->stats.cifs_stats.num_deletes, 0);
57744- atomic_set(&tcon->stats.cifs_stats.num_mkdirs, 0);
57745- atomic_set(&tcon->stats.cifs_stats.num_rmdirs, 0);
57746- atomic_set(&tcon->stats.cifs_stats.num_renames, 0);
57747- atomic_set(&tcon->stats.cifs_stats.num_t2renames, 0);
57748- atomic_set(&tcon->stats.cifs_stats.num_ffirst, 0);
57749- atomic_set(&tcon->stats.cifs_stats.num_fnext, 0);
57750- atomic_set(&tcon->stats.cifs_stats.num_fclose, 0);
57751- atomic_set(&tcon->stats.cifs_stats.num_hardlinks, 0);
57752- atomic_set(&tcon->stats.cifs_stats.num_symlinks, 0);
57753- atomic_set(&tcon->stats.cifs_stats.num_locks, 0);
57754- atomic_set(&tcon->stats.cifs_stats.num_acl_get, 0);
57755- atomic_set(&tcon->stats.cifs_stats.num_acl_set, 0);
57756+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_writes, 0);
57757+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_reads, 0);
57758+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_flushes, 0);
57759+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_oplock_brks, 0);
57760+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_opens, 0);
57761+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_posixopens, 0);
57762+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_posixmkdirs, 0);
57763+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_closes, 0);
57764+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_deletes, 0);
57765+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_mkdirs, 0);
57766+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_rmdirs, 0);
57767+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_renames, 0);
57768+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_t2renames, 0);
57769+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_ffirst, 0);
57770+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_fnext, 0);
57771+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_fclose, 0);
57772+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_hardlinks, 0);
57773+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_symlinks, 0);
57774+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_locks, 0);
57775+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_acl_get, 0);
57776+ atomic_set_unchecked(&tcon->stats.cifs_stats.num_acl_set, 0);
57777 #endif
57778 }
57779
57780@@ -655,36 +655,36 @@ cifs_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
57781 {
57782 #ifdef CONFIG_CIFS_STATS
57783 seq_printf(m, " Oplocks breaks: %d",
57784- atomic_read(&tcon->stats.cifs_stats.num_oplock_brks));
57785+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_oplock_brks));
57786 seq_printf(m, "\nReads: %d Bytes: %llu",
57787- atomic_read(&tcon->stats.cifs_stats.num_reads),
57788+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_reads),
57789 (long long)(tcon->bytes_read));
57790 seq_printf(m, "\nWrites: %d Bytes: %llu",
57791- atomic_read(&tcon->stats.cifs_stats.num_writes),
57792+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_writes),
57793 (long long)(tcon->bytes_written));
57794 seq_printf(m, "\nFlushes: %d",
57795- atomic_read(&tcon->stats.cifs_stats.num_flushes));
57796+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_flushes));
57797 seq_printf(m, "\nLocks: %d HardLinks: %d Symlinks: %d",
57798- atomic_read(&tcon->stats.cifs_stats.num_locks),
57799- atomic_read(&tcon->stats.cifs_stats.num_hardlinks),
57800- atomic_read(&tcon->stats.cifs_stats.num_symlinks));
57801+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_locks),
57802+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_hardlinks),
57803+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_symlinks));
57804 seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
57805- atomic_read(&tcon->stats.cifs_stats.num_opens),
57806- atomic_read(&tcon->stats.cifs_stats.num_closes),
57807- atomic_read(&tcon->stats.cifs_stats.num_deletes));
57808+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_opens),
57809+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_closes),
57810+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_deletes));
57811 seq_printf(m, "\nPosix Opens: %d Posix Mkdirs: %d",
57812- atomic_read(&tcon->stats.cifs_stats.num_posixopens),
57813- atomic_read(&tcon->stats.cifs_stats.num_posixmkdirs));
57814+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_posixopens),
57815+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_posixmkdirs));
57816 seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
57817- atomic_read(&tcon->stats.cifs_stats.num_mkdirs),
57818- atomic_read(&tcon->stats.cifs_stats.num_rmdirs));
57819+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_mkdirs),
57820+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_rmdirs));
57821 seq_printf(m, "\nRenames: %d T2 Renames %d",
57822- atomic_read(&tcon->stats.cifs_stats.num_renames),
57823- atomic_read(&tcon->stats.cifs_stats.num_t2renames));
57824+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_renames),
57825+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_t2renames));
57826 seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
57827- atomic_read(&tcon->stats.cifs_stats.num_ffirst),
57828- atomic_read(&tcon->stats.cifs_stats.num_fnext),
57829- atomic_read(&tcon->stats.cifs_stats.num_fclose));
57830+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_ffirst),
57831+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_fnext),
57832+ atomic_read_unchecked(&tcon->stats.cifs_stats.num_fclose));
57833 #endif
57834 }
57835
57836diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
57837index 35ddc3e..563e809 100644
57838--- a/fs/cifs/smb2ops.c
57839+++ b/fs/cifs/smb2ops.c
57840@@ -364,8 +364,8 @@ smb2_clear_stats(struct cifs_tcon *tcon)
57841 #ifdef CONFIG_CIFS_STATS
57842 int i;
57843 for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
57844- atomic_set(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
57845- atomic_set(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
57846+ atomic_set_unchecked(&tcon->stats.smb2_stats.smb2_com_sent[i], 0);
57847+ atomic_set_unchecked(&tcon->stats.smb2_stats.smb2_com_failed[i], 0);
57848 }
57849 #endif
57850 }
57851@@ -405,65 +405,65 @@ static void
57852 smb2_print_stats(struct seq_file *m, struct cifs_tcon *tcon)
57853 {
57854 #ifdef CONFIG_CIFS_STATS
57855- atomic_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
57856- atomic_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
57857+ atomic_unchecked_t *sent = tcon->stats.smb2_stats.smb2_com_sent;
57858+ atomic_unchecked_t *failed = tcon->stats.smb2_stats.smb2_com_failed;
57859 seq_printf(m, "\nNegotiates: %d sent %d failed",
57860- atomic_read(&sent[SMB2_NEGOTIATE_HE]),
57861- atomic_read(&failed[SMB2_NEGOTIATE_HE]));
57862+ atomic_read_unchecked(&sent[SMB2_NEGOTIATE_HE]),
57863+ atomic_read_unchecked(&failed[SMB2_NEGOTIATE_HE]));
57864 seq_printf(m, "\nSessionSetups: %d sent %d failed",
57865- atomic_read(&sent[SMB2_SESSION_SETUP_HE]),
57866- atomic_read(&failed[SMB2_SESSION_SETUP_HE]));
57867+ atomic_read_unchecked(&sent[SMB2_SESSION_SETUP_HE]),
57868+ atomic_read_unchecked(&failed[SMB2_SESSION_SETUP_HE]));
57869 seq_printf(m, "\nLogoffs: %d sent %d failed",
57870- atomic_read(&sent[SMB2_LOGOFF_HE]),
57871- atomic_read(&failed[SMB2_LOGOFF_HE]));
57872+ atomic_read_unchecked(&sent[SMB2_LOGOFF_HE]),
57873+ atomic_read_unchecked(&failed[SMB2_LOGOFF_HE]));
57874 seq_printf(m, "\nTreeConnects: %d sent %d failed",
57875- atomic_read(&sent[SMB2_TREE_CONNECT_HE]),
57876- atomic_read(&failed[SMB2_TREE_CONNECT_HE]));
57877+ atomic_read_unchecked(&sent[SMB2_TREE_CONNECT_HE]),
57878+ atomic_read_unchecked(&failed[SMB2_TREE_CONNECT_HE]));
57879 seq_printf(m, "\nTreeDisconnects: %d sent %d failed",
57880- atomic_read(&sent[SMB2_TREE_DISCONNECT_HE]),
57881- atomic_read(&failed[SMB2_TREE_DISCONNECT_HE]));
57882+ atomic_read_unchecked(&sent[SMB2_TREE_DISCONNECT_HE]),
57883+ atomic_read_unchecked(&failed[SMB2_TREE_DISCONNECT_HE]));
57884 seq_printf(m, "\nCreates: %d sent %d failed",
57885- atomic_read(&sent[SMB2_CREATE_HE]),
57886- atomic_read(&failed[SMB2_CREATE_HE]));
57887+ atomic_read_unchecked(&sent[SMB2_CREATE_HE]),
57888+ atomic_read_unchecked(&failed[SMB2_CREATE_HE]));
57889 seq_printf(m, "\nCloses: %d sent %d failed",
57890- atomic_read(&sent[SMB2_CLOSE_HE]),
57891- atomic_read(&failed[SMB2_CLOSE_HE]));
57892+ atomic_read_unchecked(&sent[SMB2_CLOSE_HE]),
57893+ atomic_read_unchecked(&failed[SMB2_CLOSE_HE]));
57894 seq_printf(m, "\nFlushes: %d sent %d failed",
57895- atomic_read(&sent[SMB2_FLUSH_HE]),
57896- atomic_read(&failed[SMB2_FLUSH_HE]));
57897+ atomic_read_unchecked(&sent[SMB2_FLUSH_HE]),
57898+ atomic_read_unchecked(&failed[SMB2_FLUSH_HE]));
57899 seq_printf(m, "\nReads: %d sent %d failed",
57900- atomic_read(&sent[SMB2_READ_HE]),
57901- atomic_read(&failed[SMB2_READ_HE]));
57902+ atomic_read_unchecked(&sent[SMB2_READ_HE]),
57903+ atomic_read_unchecked(&failed[SMB2_READ_HE]));
57904 seq_printf(m, "\nWrites: %d sent %d failed",
57905- atomic_read(&sent[SMB2_WRITE_HE]),
57906- atomic_read(&failed[SMB2_WRITE_HE]));
57907+ atomic_read_unchecked(&sent[SMB2_WRITE_HE]),
57908+ atomic_read_unchecked(&failed[SMB2_WRITE_HE]));
57909 seq_printf(m, "\nLocks: %d sent %d failed",
57910- atomic_read(&sent[SMB2_LOCK_HE]),
57911- atomic_read(&failed[SMB2_LOCK_HE]));
57912+ atomic_read_unchecked(&sent[SMB2_LOCK_HE]),
57913+ atomic_read_unchecked(&failed[SMB2_LOCK_HE]));
57914 seq_printf(m, "\nIOCTLs: %d sent %d failed",
57915- atomic_read(&sent[SMB2_IOCTL_HE]),
57916- atomic_read(&failed[SMB2_IOCTL_HE]));
57917+ atomic_read_unchecked(&sent[SMB2_IOCTL_HE]),
57918+ atomic_read_unchecked(&failed[SMB2_IOCTL_HE]));
57919 seq_printf(m, "\nCancels: %d sent %d failed",
57920- atomic_read(&sent[SMB2_CANCEL_HE]),
57921- atomic_read(&failed[SMB2_CANCEL_HE]));
57922+ atomic_read_unchecked(&sent[SMB2_CANCEL_HE]),
57923+ atomic_read_unchecked(&failed[SMB2_CANCEL_HE]));
57924 seq_printf(m, "\nEchos: %d sent %d failed",
57925- atomic_read(&sent[SMB2_ECHO_HE]),
57926- atomic_read(&failed[SMB2_ECHO_HE]));
57927+ atomic_read_unchecked(&sent[SMB2_ECHO_HE]),
57928+ atomic_read_unchecked(&failed[SMB2_ECHO_HE]));
57929 seq_printf(m, "\nQueryDirectories: %d sent %d failed",
57930- atomic_read(&sent[SMB2_QUERY_DIRECTORY_HE]),
57931- atomic_read(&failed[SMB2_QUERY_DIRECTORY_HE]));
57932+ atomic_read_unchecked(&sent[SMB2_QUERY_DIRECTORY_HE]),
57933+ atomic_read_unchecked(&failed[SMB2_QUERY_DIRECTORY_HE]));
57934 seq_printf(m, "\nChangeNotifies: %d sent %d failed",
57935- atomic_read(&sent[SMB2_CHANGE_NOTIFY_HE]),
57936- atomic_read(&failed[SMB2_CHANGE_NOTIFY_HE]));
57937+ atomic_read_unchecked(&sent[SMB2_CHANGE_NOTIFY_HE]),
57938+ atomic_read_unchecked(&failed[SMB2_CHANGE_NOTIFY_HE]));
57939 seq_printf(m, "\nQueryInfos: %d sent %d failed",
57940- atomic_read(&sent[SMB2_QUERY_INFO_HE]),
57941- atomic_read(&failed[SMB2_QUERY_INFO_HE]));
57942+ atomic_read_unchecked(&sent[SMB2_QUERY_INFO_HE]),
57943+ atomic_read_unchecked(&failed[SMB2_QUERY_INFO_HE]));
57944 seq_printf(m, "\nSetInfos: %d sent %d failed",
57945- atomic_read(&sent[SMB2_SET_INFO_HE]),
57946- atomic_read(&failed[SMB2_SET_INFO_HE]));
57947+ atomic_read_unchecked(&sent[SMB2_SET_INFO_HE]),
57948+ atomic_read_unchecked(&failed[SMB2_SET_INFO_HE]));
57949 seq_printf(m, "\nOplockBreaks: %d sent %d failed",
57950- atomic_read(&sent[SMB2_OPLOCK_BREAK_HE]),
57951- atomic_read(&failed[SMB2_OPLOCK_BREAK_HE]));
57952+ atomic_read_unchecked(&sent[SMB2_OPLOCK_BREAK_HE]),
57953+ atomic_read_unchecked(&failed[SMB2_OPLOCK_BREAK_HE]));
57954 #endif
57955 }
57956
57957diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
57958index 1fb6ad2..758e171 100644
57959--- a/fs/cifs/smb2pdu.c
57960+++ b/fs/cifs/smb2pdu.c
57961@@ -2097,8 +2097,7 @@ SMB2_query_directory(const unsigned int xid, struct cifs_tcon *tcon,
57962 default:
57963 cifs_dbg(VFS, "info level %u isn't supported\n",
57964 srch_inf->info_level);
57965- rc = -EINVAL;
57966- goto qdir_exit;
57967+ return -EINVAL;
57968 }
57969
57970 req->FileIndex = cpu_to_le32(index);
57971diff --git a/fs/coda/cache.c b/fs/coda/cache.c
57972index 1da168c..8bc7ff6 100644
57973--- a/fs/coda/cache.c
57974+++ b/fs/coda/cache.c
57975@@ -24,7 +24,7 @@
57976 #include "coda_linux.h"
57977 #include "coda_cache.h"
57978
57979-static atomic_t permission_epoch = ATOMIC_INIT(0);
57980+static atomic_unchecked_t permission_epoch = ATOMIC_INIT(0);
57981
57982 /* replace or extend an acl cache hit */
57983 void coda_cache_enter(struct inode *inode, int mask)
57984@@ -32,7 +32,7 @@ void coda_cache_enter(struct inode *inode, int mask)
57985 struct coda_inode_info *cii = ITOC(inode);
57986
57987 spin_lock(&cii->c_lock);
57988- cii->c_cached_epoch = atomic_read(&permission_epoch);
57989+ cii->c_cached_epoch = atomic_read_unchecked(&permission_epoch);
57990 if (!uid_eq(cii->c_uid, current_fsuid())) {
57991 cii->c_uid = current_fsuid();
57992 cii->c_cached_perm = mask;
57993@@ -46,14 +46,14 @@ void coda_cache_clear_inode(struct inode *inode)
57994 {
57995 struct coda_inode_info *cii = ITOC(inode);
57996 spin_lock(&cii->c_lock);
57997- cii->c_cached_epoch = atomic_read(&permission_epoch) - 1;
57998+ cii->c_cached_epoch = atomic_read_unchecked(&permission_epoch) - 1;
57999 spin_unlock(&cii->c_lock);
58000 }
58001
58002 /* remove all acl caches */
58003 void coda_cache_clear_all(struct super_block *sb)
58004 {
58005- atomic_inc(&permission_epoch);
58006+ atomic_inc_unchecked(&permission_epoch);
58007 }
58008
58009
58010@@ -66,7 +66,7 @@ int coda_cache_check(struct inode *inode, int mask)
58011 spin_lock(&cii->c_lock);
58012 hit = (mask & cii->c_cached_perm) == mask &&
58013 uid_eq(cii->c_uid, current_fsuid()) &&
58014- cii->c_cached_epoch == atomic_read(&permission_epoch);
58015+ cii->c_cached_epoch == atomic_read_unchecked(&permission_epoch);
58016 spin_unlock(&cii->c_lock);
58017
58018 return hit;
58019diff --git a/fs/compat.c b/fs/compat.c
58020index 66d3d3c..9c10175 100644
58021--- a/fs/compat.c
58022+++ b/fs/compat.c
58023@@ -54,7 +54,7 @@
58024 #include <asm/ioctls.h>
58025 #include "internal.h"
58026
58027-int compat_log = 1;
58028+int compat_log = 0;
58029
58030 int compat_printk(const char *fmt, ...)
58031 {
58032@@ -512,7 +512,7 @@ COMPAT_SYSCALL_DEFINE2(io_setup, unsigned, nr_reqs, u32 __user *, ctx32p)
58033
58034 set_fs(KERNEL_DS);
58035 /* The __user pointer cast is valid because of the set_fs() */
58036- ret = sys_io_setup(nr_reqs, (aio_context_t __user *) &ctx64);
58037+ ret = sys_io_setup(nr_reqs, (aio_context_t __force_user *) &ctx64);
58038 set_fs(oldfs);
58039 /* truncating is ok because it's a user address */
58040 if (!ret)
58041@@ -562,7 +562,7 @@ ssize_t compat_rw_copy_check_uvector(int type,
58042 goto out;
58043
58044 ret = -EINVAL;
58045- if (nr_segs > UIO_MAXIOV || nr_segs < 0)
58046+ if (nr_segs > UIO_MAXIOV)
58047 goto out;
58048 if (nr_segs > fast_segs) {
58049 ret = -ENOMEM;
58050@@ -850,6 +850,7 @@ struct compat_old_linux_dirent {
58051 struct compat_readdir_callback {
58052 struct dir_context ctx;
58053 struct compat_old_linux_dirent __user *dirent;
58054+ struct file * file;
58055 int result;
58056 };
58057
58058@@ -867,6 +868,10 @@ static int compat_fillonedir(void *__buf, const char *name, int namlen,
58059 buf->result = -EOVERFLOW;
58060 return -EOVERFLOW;
58061 }
58062+
58063+ if (!gr_acl_handle_filldir(buf->file, name, namlen, ino))
58064+ return 0;
58065+
58066 buf->result++;
58067 dirent = buf->dirent;
58068 if (!access_ok(VERIFY_WRITE, dirent,
58069@@ -898,6 +903,7 @@ COMPAT_SYSCALL_DEFINE3(old_readdir, unsigned int, fd,
58070 if (!f.file)
58071 return -EBADF;
58072
58073+ buf.file = f.file;
58074 error = iterate_dir(f.file, &buf.ctx);
58075 if (buf.result)
58076 error = buf.result;
58077@@ -917,6 +923,7 @@ struct compat_getdents_callback {
58078 struct dir_context ctx;
58079 struct compat_linux_dirent __user *current_dir;
58080 struct compat_linux_dirent __user *previous;
58081+ struct file * file;
58082 int count;
58083 int error;
58084 };
58085@@ -938,6 +945,10 @@ static int compat_filldir(void *__buf, const char *name, int namlen,
58086 buf->error = -EOVERFLOW;
58087 return -EOVERFLOW;
58088 }
58089+
58090+ if (!gr_acl_handle_filldir(buf->file, name, namlen, ino))
58091+ return 0;
58092+
58093 dirent = buf->previous;
58094 if (dirent) {
58095 if (__put_user(offset, &dirent->d_off))
58096@@ -983,6 +994,7 @@ COMPAT_SYSCALL_DEFINE3(getdents, unsigned int, fd,
58097 if (!f.file)
58098 return -EBADF;
58099
58100+ buf.file = f.file;
58101 error = iterate_dir(f.file, &buf.ctx);
58102 if (error >= 0)
58103 error = buf.error;
58104@@ -1003,6 +1015,7 @@ struct compat_getdents_callback64 {
58105 struct dir_context ctx;
58106 struct linux_dirent64 __user *current_dir;
58107 struct linux_dirent64 __user *previous;
58108+ struct file * file;
58109 int count;
58110 int error;
58111 };
58112@@ -1019,6 +1032,10 @@ static int compat_filldir64(void * __buf, const char * name, int namlen, loff_t
58113 buf->error = -EINVAL; /* only used if we fail.. */
58114 if (reclen > buf->count)
58115 return -EINVAL;
58116+
58117+ if (!gr_acl_handle_filldir(buf->file, name, namlen, ino))
58118+ return 0;
58119+
58120 dirent = buf->previous;
58121
58122 if (dirent) {
58123@@ -1068,6 +1085,7 @@ COMPAT_SYSCALL_DEFINE3(getdents64, unsigned int, fd,
58124 if (!f.file)
58125 return -EBADF;
58126
58127+ buf.file = f.file;
58128 error = iterate_dir(f.file, &buf.ctx);
58129 if (error >= 0)
58130 error = buf.error;
58131diff --git a/fs/compat_binfmt_elf.c b/fs/compat_binfmt_elf.c
58132index 4d24d17..4f8c09e 100644
58133--- a/fs/compat_binfmt_elf.c
58134+++ b/fs/compat_binfmt_elf.c
58135@@ -30,11 +30,13 @@
58136 #undef elf_phdr
58137 #undef elf_shdr
58138 #undef elf_note
58139+#undef elf_dyn
58140 #undef elf_addr_t
58141 #define elfhdr elf32_hdr
58142 #define elf_phdr elf32_phdr
58143 #define elf_shdr elf32_shdr
58144 #define elf_note elf32_note
58145+#define elf_dyn Elf32_Dyn
58146 #define elf_addr_t Elf32_Addr
58147
58148 /*
58149diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
58150index e822890..59374d5 100644
58151--- a/fs/compat_ioctl.c
58152+++ b/fs/compat_ioctl.c
58153@@ -621,7 +621,7 @@ static int serial_struct_ioctl(unsigned fd, unsigned cmd,
58154 return -EFAULT;
58155 if (__get_user(udata, &ss32->iomem_base))
58156 return -EFAULT;
58157- ss.iomem_base = compat_ptr(udata);
58158+ ss.iomem_base = (unsigned char __force_kernel *)compat_ptr(udata);
58159 if (__get_user(ss.iomem_reg_shift, &ss32->iomem_reg_shift) ||
58160 __get_user(ss.port_high, &ss32->port_high))
58161 return -EFAULT;
58162@@ -703,8 +703,8 @@ static int do_i2c_rdwr_ioctl(unsigned int fd, unsigned int cmd,
58163 for (i = 0; i < nmsgs; i++) {
58164 if (copy_in_user(&tmsgs[i].addr, &umsgs[i].addr, 3*sizeof(u16)))
58165 return -EFAULT;
58166- if (get_user(datap, &umsgs[i].buf) ||
58167- put_user(compat_ptr(datap), &tmsgs[i].buf))
58168+ if (get_user(datap, (u8 __user * __user *)&umsgs[i].buf) ||
58169+ put_user(compat_ptr(datap), (u8 __user * __user *)&tmsgs[i].buf))
58170 return -EFAULT;
58171 }
58172 return sys_ioctl(fd, cmd, (unsigned long)tdata);
58173@@ -797,7 +797,7 @@ static int compat_ioctl_preallocate(struct file *file,
58174 copy_in_user(&p->l_len, &p32->l_len, sizeof(s64)) ||
58175 copy_in_user(&p->l_sysid, &p32->l_sysid, sizeof(s32)) ||
58176 copy_in_user(&p->l_pid, &p32->l_pid, sizeof(u32)) ||
58177- copy_in_user(&p->l_pad, &p32->l_pad, 4*sizeof(u32)))
58178+ copy_in_user(p->l_pad, p32->l_pad, 4*sizeof(u32)))
58179 return -EFAULT;
58180
58181 return ioctl_preallocate(file, p);
58182@@ -1618,8 +1618,8 @@ COMPAT_SYSCALL_DEFINE3(ioctl, unsigned int, fd, unsigned int, cmd,
58183 static int __init init_sys32_ioctl_cmp(const void *p, const void *q)
58184 {
58185 unsigned int a, b;
58186- a = *(unsigned int *)p;
58187- b = *(unsigned int *)q;
58188+ a = *(const unsigned int *)p;
58189+ b = *(const unsigned int *)q;
58190 if (a > b)
58191 return 1;
58192 if (a < b)
58193diff --git a/fs/configfs/dir.c b/fs/configfs/dir.c
58194index e081acb..911df21 100644
58195--- a/fs/configfs/dir.c
58196+++ b/fs/configfs/dir.c
58197@@ -1548,7 +1548,8 @@ static int configfs_readdir(struct file *file, struct dir_context *ctx)
58198 }
58199 for (p = q->next; p != &parent_sd->s_children; p = p->next) {
58200 struct configfs_dirent *next;
58201- const char *name;
58202+ const unsigned char * name;
58203+ char d_name[sizeof(next->s_dentry->d_iname)];
58204 int len;
58205 struct inode *inode = NULL;
58206
58207@@ -1557,7 +1558,12 @@ static int configfs_readdir(struct file *file, struct dir_context *ctx)
58208 continue;
58209
58210 name = configfs_get_name(next);
58211- len = strlen(name);
58212+ if (next->s_dentry && name == next->s_dentry->d_iname) {
58213+ len = next->s_dentry->d_name.len;
58214+ memcpy(d_name, name, len);
58215+ name = d_name;
58216+ } else
58217+ len = strlen(name);
58218
58219 /*
58220 * We'll have a dentry and an inode for
58221diff --git a/fs/coredump.c b/fs/coredump.c
58222index 0b2528f..836c55f 100644
58223--- a/fs/coredump.c
58224+++ b/fs/coredump.c
58225@@ -442,8 +442,8 @@ static void wait_for_dump_helpers(struct file *file)
58226 struct pipe_inode_info *pipe = file->private_data;
58227
58228 pipe_lock(pipe);
58229- pipe->readers++;
58230- pipe->writers--;
58231+ atomic_inc(&pipe->readers);
58232+ atomic_dec(&pipe->writers);
58233 wake_up_interruptible_sync(&pipe->wait);
58234 kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
58235 pipe_unlock(pipe);
58236@@ -452,11 +452,11 @@ static void wait_for_dump_helpers(struct file *file)
58237 * We actually want wait_event_freezable() but then we need
58238 * to clear TIF_SIGPENDING and improve dump_interrupted().
58239 */
58240- wait_event_interruptible(pipe->wait, pipe->readers == 1);
58241+ wait_event_interruptible(pipe->wait, atomic_read(&pipe->readers) == 1);
58242
58243 pipe_lock(pipe);
58244- pipe->readers--;
58245- pipe->writers++;
58246+ atomic_dec(&pipe->readers);
58247+ atomic_inc(&pipe->writers);
58248 pipe_unlock(pipe);
58249 }
58250
58251@@ -503,7 +503,9 @@ void do_coredump(const siginfo_t *siginfo)
58252 struct files_struct *displaced;
58253 bool need_nonrelative = false;
58254 bool core_dumped = false;
58255- static atomic_t core_dump_count = ATOMIC_INIT(0);
58256+ static atomic_unchecked_t core_dump_count = ATOMIC_INIT(0);
58257+ long signr = siginfo->si_signo;
58258+ int dumpable;
58259 struct coredump_params cprm = {
58260 .siginfo = siginfo,
58261 .regs = signal_pt_regs(),
58262@@ -516,12 +518,17 @@ void do_coredump(const siginfo_t *siginfo)
58263 .mm_flags = mm->flags,
58264 };
58265
58266- audit_core_dumps(siginfo->si_signo);
58267+ audit_core_dumps(signr);
58268+
58269+ dumpable = __get_dumpable(cprm.mm_flags);
58270+
58271+ if (signr == SIGSEGV || signr == SIGBUS || signr == SIGKILL || signr == SIGILL)
58272+ gr_handle_brute_attach(dumpable);
58273
58274 binfmt = mm->binfmt;
58275 if (!binfmt || !binfmt->core_dump)
58276 goto fail;
58277- if (!__get_dumpable(cprm.mm_flags))
58278+ if (!dumpable)
58279 goto fail;
58280
58281 cred = prepare_creds();
58282@@ -540,7 +547,7 @@ void do_coredump(const siginfo_t *siginfo)
58283 need_nonrelative = true;
58284 }
58285
58286- retval = coredump_wait(siginfo->si_signo, &core_state);
58287+ retval = coredump_wait(signr, &core_state);
58288 if (retval < 0)
58289 goto fail_creds;
58290
58291@@ -583,7 +590,7 @@ void do_coredump(const siginfo_t *siginfo)
58292 }
58293 cprm.limit = RLIM_INFINITY;
58294
58295- dump_count = atomic_inc_return(&core_dump_count);
58296+ dump_count = atomic_inc_return_unchecked(&core_dump_count);
58297 if (core_pipe_limit && (core_pipe_limit < dump_count)) {
58298 printk(KERN_WARNING "Pid %d(%s) over core_pipe_limit\n",
58299 task_tgid_vnr(current), current->comm);
58300@@ -615,6 +622,8 @@ void do_coredump(const siginfo_t *siginfo)
58301 } else {
58302 struct inode *inode;
58303
58304+ gr_learn_resource(current, RLIMIT_CORE, binfmt->min_coredump, 1);
58305+
58306 if (cprm.limit < binfmt->min_coredump)
58307 goto fail_unlock;
58308
58309@@ -673,7 +682,7 @@ close_fail:
58310 filp_close(cprm.file, NULL);
58311 fail_dropcount:
58312 if (ispipe)
58313- atomic_dec(&core_dump_count);
58314+ atomic_dec_unchecked(&core_dump_count);
58315 fail_unlock:
58316 kfree(cn.corename);
58317 coredump_finish(mm, core_dumped);
58318@@ -694,6 +703,8 @@ int dump_emit(struct coredump_params *cprm, const void *addr, int nr)
58319 struct file *file = cprm->file;
58320 loff_t pos = file->f_pos;
58321 ssize_t n;
58322+
58323+ gr_learn_resource(current, RLIMIT_CORE, cprm->written + nr, 1);
58324 if (cprm->written + nr > cprm->limit)
58325 return 0;
58326 while (nr) {
58327diff --git a/fs/dcache.c b/fs/dcache.c
58328index e99c6f5..2838bf58 100644
58329--- a/fs/dcache.c
58330+++ b/fs/dcache.c
58331@@ -1445,7 +1445,7 @@ struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
58332 */
58333 dentry->d_iname[DNAME_INLINE_LEN-1] = 0;
58334 if (name->len > DNAME_INLINE_LEN-1) {
58335- dname = kmalloc(name->len + 1, GFP_KERNEL);
58336+ dname = kmalloc(round_up(name->len + 1, sizeof(unsigned long)), GFP_KERNEL);
58337 if (!dname) {
58338 kmem_cache_free(dentry_cache, dentry);
58339 return NULL;
58340@@ -3413,7 +3413,8 @@ void __init vfs_caches_init(unsigned long mempages)
58341 mempages -= reserve;
58342
58343 names_cachep = kmem_cache_create("names_cache", PATH_MAX, 0,
58344- SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
58345+ SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_USERCOPY|
58346+ SLAB_NO_SANITIZE, NULL);
58347
58348 dcache_init();
58349 inode_init();
58350diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
58351index 8c41b52..145b1b9 100644
58352--- a/fs/debugfs/inode.c
58353+++ b/fs/debugfs/inode.c
58354@@ -416,7 +416,11 @@ EXPORT_SYMBOL_GPL(debugfs_create_file);
58355 */
58356 struct dentry *debugfs_create_dir(const char *name, struct dentry *parent)
58357 {
58358+#ifdef CONFIG_GRKERNSEC_SYSFS_RESTRICT
58359+ return __create_file(name, S_IFDIR | S_IRWXU,
58360+#else
58361 return __create_file(name, S_IFDIR | S_IRWXU | S_IRUGO | S_IXUGO,
58362+#endif
58363 parent, NULL, NULL);
58364 }
58365 EXPORT_SYMBOL_GPL(debugfs_create_dir);
58366diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
58367index d4a9431..77f9b2e 100644
58368--- a/fs/ecryptfs/inode.c
58369+++ b/fs/ecryptfs/inode.c
58370@@ -673,7 +673,7 @@ static char *ecryptfs_readlink_lower(struct dentry *dentry, size_t *bufsiz)
58371 old_fs = get_fs();
58372 set_fs(get_ds());
58373 rc = lower_dentry->d_inode->i_op->readlink(lower_dentry,
58374- (char __user *)lower_buf,
58375+ (char __force_user *)lower_buf,
58376 PATH_MAX);
58377 set_fs(old_fs);
58378 if (rc < 0)
58379diff --git a/fs/ecryptfs/miscdev.c b/fs/ecryptfs/miscdev.c
58380index e4141f2..d8263e8 100644
58381--- a/fs/ecryptfs/miscdev.c
58382+++ b/fs/ecryptfs/miscdev.c
58383@@ -304,7 +304,7 @@ check_list:
58384 goto out_unlock_msg_ctx;
58385 i = PKT_TYPE_SIZE + PKT_CTR_SIZE;
58386 if (msg_ctx->msg) {
58387- if (copy_to_user(&buf[i], packet_length, packet_length_size))
58388+ if (packet_length_size > sizeof(packet_length) || copy_to_user(&buf[i], packet_length, packet_length_size))
58389 goto out_unlock_msg_ctx;
58390 i += packet_length_size;
58391 if (copy_to_user(&buf[i], msg_ctx->msg, msg_ctx->msg_size))
58392diff --git a/fs/exec.c b/fs/exec.c
58393index 238b7aa..a421d91 100644
58394--- a/fs/exec.c
58395+++ b/fs/exec.c
58396@@ -56,8 +56,20 @@
58397 #include <linux/pipe_fs_i.h>
58398 #include <linux/oom.h>
58399 #include <linux/compat.h>
58400+#include <linux/random.h>
58401+#include <linux/seq_file.h>
58402+#include <linux/coredump.h>
58403+#include <linux/mman.h>
58404+
58405+#ifdef CONFIG_PAX_REFCOUNT
58406+#include <linux/kallsyms.h>
58407+#include <linux/kdebug.h>
58408+#endif
58409+
58410+#include <trace/events/fs.h>
58411
58412 #include <asm/uaccess.h>
58413+#include <asm/sections.h>
58414 #include <asm/mmu_context.h>
58415 #include <asm/tlb.h>
58416
58417@@ -66,19 +78,34 @@
58418
58419 #include <trace/events/sched.h>
58420
58421+#ifdef CONFIG_PAX_HAVE_ACL_FLAGS
58422+void __weak pax_set_initial_flags(struct linux_binprm *bprm)
58423+{
58424+ pr_warn_once("PAX: PAX_HAVE_ACL_FLAGS was enabled without providing the pax_set_initial_flags callback, this is probably not what you wanted.\n");
58425+}
58426+#endif
58427+
58428+#ifdef CONFIG_PAX_HOOK_ACL_FLAGS
58429+void (*pax_set_initial_flags_func)(struct linux_binprm *bprm);
58430+EXPORT_SYMBOL(pax_set_initial_flags_func);
58431+#endif
58432+
58433 int suid_dumpable = 0;
58434
58435 static LIST_HEAD(formats);
58436 static DEFINE_RWLOCK(binfmt_lock);
58437
58438+extern int gr_process_kernel_exec_ban(void);
58439+extern int gr_process_suid_exec_ban(const struct linux_binprm *bprm);
58440+
58441 void __register_binfmt(struct linux_binfmt * fmt, int insert)
58442 {
58443 BUG_ON(!fmt);
58444 if (WARN_ON(!fmt->load_binary))
58445 return;
58446 write_lock(&binfmt_lock);
58447- insert ? list_add(&fmt->lh, &formats) :
58448- list_add_tail(&fmt->lh, &formats);
58449+ insert ? pax_list_add((struct list_head *)&fmt->lh, &formats) :
58450+ pax_list_add_tail((struct list_head *)&fmt->lh, &formats);
58451 write_unlock(&binfmt_lock);
58452 }
58453
58454@@ -87,7 +114,7 @@ EXPORT_SYMBOL(__register_binfmt);
58455 void unregister_binfmt(struct linux_binfmt * fmt)
58456 {
58457 write_lock(&binfmt_lock);
58458- list_del(&fmt->lh);
58459+ pax_list_del((struct list_head *)&fmt->lh);
58460 write_unlock(&binfmt_lock);
58461 }
58462
58463@@ -183,18 +210,10 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos,
58464 int write)
58465 {
58466 struct page *page;
58467- int ret;
58468
58469-#ifdef CONFIG_STACK_GROWSUP
58470- if (write) {
58471- ret = expand_downwards(bprm->vma, pos);
58472- if (ret < 0)
58473- return NULL;
58474- }
58475-#endif
58476- ret = get_user_pages(current, bprm->mm, pos,
58477- 1, write, 1, &page, NULL);
58478- if (ret <= 0)
58479+ if (0 > expand_downwards(bprm->vma, pos))
58480+ return NULL;
58481+ if (0 >= get_user_pages(current, bprm->mm, pos, 1, write, 1, &page, NULL))
58482 return NULL;
58483
58484 if (write) {
58485@@ -210,6 +229,17 @@ static struct page *get_arg_page(struct linux_binprm *bprm, unsigned long pos,
58486 if (size <= ARG_MAX)
58487 return page;
58488
58489+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
58490+ // only allow 512KB for argv+env on suid/sgid binaries
58491+ // to prevent easy ASLR exhaustion
58492+ if (((!uid_eq(bprm->cred->euid, current_euid())) ||
58493+ (!gid_eq(bprm->cred->egid, current_egid()))) &&
58494+ (size > (512 * 1024))) {
58495+ put_page(page);
58496+ return NULL;
58497+ }
58498+#endif
58499+
58500 /*
58501 * Limit to 1/4-th the stack size for the argv+env strings.
58502 * This ensures that:
58503@@ -269,6 +299,11 @@ static int __bprm_mm_init(struct linux_binprm *bprm)
58504 vma->vm_end = STACK_TOP_MAX;
58505 vma->vm_start = vma->vm_end - PAGE_SIZE;
58506 vma->vm_flags = VM_SOFTDIRTY | VM_STACK_FLAGS | VM_STACK_INCOMPLETE_SETUP;
58507+
58508+#ifdef CONFIG_PAX_SEGMEXEC
58509+ vma->vm_flags &= ~(VM_EXEC | VM_MAYEXEC);
58510+#endif
58511+
58512 vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
58513 INIT_LIST_HEAD(&vma->anon_vma_chain);
58514
58515@@ -279,6 +314,12 @@ static int __bprm_mm_init(struct linux_binprm *bprm)
58516 mm->stack_vm = mm->total_vm = 1;
58517 up_write(&mm->mmap_sem);
58518 bprm->p = vma->vm_end - sizeof(void *);
58519+
58520+#ifdef CONFIG_PAX_RANDUSTACK
58521+ if (randomize_va_space)
58522+ bprm->p ^= prandom_u32() & ~PAGE_MASK;
58523+#endif
58524+
58525 return 0;
58526 err:
58527 up_write(&mm->mmap_sem);
58528@@ -399,7 +440,7 @@ struct user_arg_ptr {
58529 } ptr;
58530 };
58531
58532-static const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr)
58533+const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr)
58534 {
58535 const char __user *native;
58536
58537@@ -408,14 +449,14 @@ static const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr)
58538 compat_uptr_t compat;
58539
58540 if (get_user(compat, argv.ptr.compat + nr))
58541- return ERR_PTR(-EFAULT);
58542+ return (const char __force_user *)ERR_PTR(-EFAULT);
58543
58544 return compat_ptr(compat);
58545 }
58546 #endif
58547
58548 if (get_user(native, argv.ptr.native + nr))
58549- return ERR_PTR(-EFAULT);
58550+ return (const char __force_user *)ERR_PTR(-EFAULT);
58551
58552 return native;
58553 }
58554@@ -434,7 +475,7 @@ static int count(struct user_arg_ptr argv, int max)
58555 if (!p)
58556 break;
58557
58558- if (IS_ERR(p))
58559+ if (IS_ERR((const char __force_kernel *)p))
58560 return -EFAULT;
58561
58562 if (i >= max)
58563@@ -469,7 +510,7 @@ static int copy_strings(int argc, struct user_arg_ptr argv,
58564
58565 ret = -EFAULT;
58566 str = get_user_arg_ptr(argv, argc);
58567- if (IS_ERR(str))
58568+ if (IS_ERR((const char __force_kernel *)str))
58569 goto out;
58570
58571 len = strnlen_user(str, MAX_ARG_STRLEN);
58572@@ -551,7 +592,7 @@ int copy_strings_kernel(int argc, const char *const *__argv,
58573 int r;
58574 mm_segment_t oldfs = get_fs();
58575 struct user_arg_ptr argv = {
58576- .ptr.native = (const char __user *const __user *)__argv,
58577+ .ptr.native = (const char __user * const __force_user *)__argv,
58578 };
58579
58580 set_fs(KERNEL_DS);
58581@@ -586,7 +627,8 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift)
58582 unsigned long new_end = old_end - shift;
58583 struct mmu_gather tlb;
58584
58585- BUG_ON(new_start > new_end);
58586+ if (new_start >= new_end || new_start < mmap_min_addr)
58587+ return -ENOMEM;
58588
58589 /*
58590 * ensure there are no vmas between where we want to go
58591@@ -595,6 +637,10 @@ static int shift_arg_pages(struct vm_area_struct *vma, unsigned long shift)
58592 if (vma != find_vma(mm, new_start))
58593 return -EFAULT;
58594
58595+#ifdef CONFIG_PAX_SEGMEXEC
58596+ BUG_ON(pax_find_mirror_vma(vma));
58597+#endif
58598+
58599 /*
58600 * cover the whole range: [new_start, old_end)
58601 */
58602@@ -675,10 +721,6 @@ int setup_arg_pages(struct linux_binprm *bprm,
58603 stack_top = arch_align_stack(stack_top);
58604 stack_top = PAGE_ALIGN(stack_top);
58605
58606- if (unlikely(stack_top < mmap_min_addr) ||
58607- unlikely(vma->vm_end - vma->vm_start >= stack_top - mmap_min_addr))
58608- return -ENOMEM;
58609-
58610 stack_shift = vma->vm_end - stack_top;
58611
58612 bprm->p -= stack_shift;
58613@@ -690,8 +732,28 @@ int setup_arg_pages(struct linux_binprm *bprm,
58614 bprm->exec -= stack_shift;
58615
58616 down_write(&mm->mmap_sem);
58617+
58618+ /* Move stack pages down in memory. */
58619+ if (stack_shift) {
58620+ ret = shift_arg_pages(vma, stack_shift);
58621+ if (ret)
58622+ goto out_unlock;
58623+ }
58624+
58625 vm_flags = VM_STACK_FLAGS;
58626
58627+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
58628+ if (mm->pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) {
58629+ vm_flags &= ~VM_EXEC;
58630+
58631+#ifdef CONFIG_PAX_MPROTECT
58632+ if (mm->pax_flags & MF_PAX_MPROTECT)
58633+ vm_flags &= ~VM_MAYEXEC;
58634+#endif
58635+
58636+ }
58637+#endif
58638+
58639 /*
58640 * Adjust stack execute permissions; explicitly enable for
58641 * EXSTACK_ENABLE_X, disable for EXSTACK_DISABLE_X and leave alone
58642@@ -710,13 +772,6 @@ int setup_arg_pages(struct linux_binprm *bprm,
58643 goto out_unlock;
58644 BUG_ON(prev != vma);
58645
58646- /* Move stack pages down in memory. */
58647- if (stack_shift) {
58648- ret = shift_arg_pages(vma, stack_shift);
58649- if (ret)
58650- goto out_unlock;
58651- }
58652-
58653 /* mprotect_fixup is overkill to remove the temporary stack flags */
58654 vma->vm_flags &= ~VM_STACK_INCOMPLETE_SETUP;
58655
58656@@ -740,6 +795,27 @@ int setup_arg_pages(struct linux_binprm *bprm,
58657 #endif
58658 current->mm->start_stack = bprm->p;
58659 ret = expand_stack(vma, stack_base);
58660+
58661+#if !defined(CONFIG_STACK_GROWSUP) && defined(CONFIG_PAX_RANDMMAP)
58662+ if (!ret && (mm->pax_flags & MF_PAX_RANDMMAP) && STACK_TOP <= 0xFFFFFFFFU && STACK_TOP > vma->vm_end) {
58663+ unsigned long size;
58664+ vm_flags_t vm_flags;
58665+
58666+ size = STACK_TOP - vma->vm_end;
58667+ vm_flags = VM_NONE | VM_DONTEXPAND | VM_DONTDUMP;
58668+
58669+ ret = vma->vm_end != mmap_region(NULL, vma->vm_end, size, vm_flags, 0);
58670+
58671+#ifdef CONFIG_X86
58672+ if (!ret) {
58673+ size = PAGE_SIZE + mmap_min_addr + ((mm->delta_mmap ^ mm->delta_stack) & (0xFFUL << PAGE_SHIFT));
58674+ ret = 0 != mmap_region(NULL, 0, PAGE_ALIGN(size), vm_flags, 0);
58675+ }
58676+#endif
58677+
58678+ }
58679+#endif
58680+
58681 if (ret)
58682 ret = -EFAULT;
58683
58684@@ -775,6 +851,8 @@ static struct file *do_open_exec(struct filename *name)
58685
58686 fsnotify_open(file);
58687
58688+ trace_open_exec(name->name);
58689+
58690 err = deny_write_access(file);
58691 if (err)
58692 goto exit;
58693@@ -804,7 +882,7 @@ int kernel_read(struct file *file, loff_t offset,
58694 old_fs = get_fs();
58695 set_fs(get_ds());
58696 /* The cast to a user pointer is valid due to the set_fs() */
58697- result = vfs_read(file, (void __user *)addr, count, &pos);
58698+ result = vfs_read(file, (void __force_user *)addr, count, &pos);
58699 set_fs(old_fs);
58700 return result;
58701 }
58702@@ -849,6 +927,7 @@ static int exec_mmap(struct mm_struct *mm)
58703 tsk->mm = mm;
58704 tsk->active_mm = mm;
58705 activate_mm(active_mm, mm);
58706+ populate_stack();
58707 tsk->mm->vmacache_seqnum = 0;
58708 vmacache_flush(tsk);
58709 task_unlock(tsk);
58710@@ -1246,7 +1325,7 @@ static void check_unsafe_exec(struct linux_binprm *bprm)
58711 }
58712 rcu_read_unlock();
58713
58714- if (p->fs->users > n_fs)
58715+ if (atomic_read(&p->fs->users) > n_fs)
58716 bprm->unsafe |= LSM_UNSAFE_SHARE;
58717 else
58718 p->fs->in_exec = 1;
58719@@ -1422,6 +1501,31 @@ static int exec_binprm(struct linux_binprm *bprm)
58720 return ret;
58721 }
58722
58723+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
58724+static DEFINE_PER_CPU(u64, exec_counter);
58725+static int __init init_exec_counters(void)
58726+{
58727+ unsigned int cpu;
58728+
58729+ for_each_possible_cpu(cpu) {
58730+ per_cpu(exec_counter, cpu) = (u64)cpu;
58731+ }
58732+
58733+ return 0;
58734+}
58735+early_initcall(init_exec_counters);
58736+static inline void increment_exec_counter(void)
58737+{
58738+ BUILD_BUG_ON(NR_CPUS > (1 << 16));
58739+ current->exec_id = this_cpu_add_return(exec_counter, 1 << 16);
58740+}
58741+#else
58742+static inline void increment_exec_counter(void) {}
58743+#endif
58744+
58745+extern void gr_handle_exec_args(struct linux_binprm *bprm,
58746+ struct user_arg_ptr argv);
58747+
58748 /*
58749 * sys_execve() executes a new program.
58750 */
58751@@ -1429,6 +1533,11 @@ static int do_execve_common(struct filename *filename,
58752 struct user_arg_ptr argv,
58753 struct user_arg_ptr envp)
58754 {
58755+#ifdef CONFIG_GRKERNSEC
58756+ struct file *old_exec_file;
58757+ struct acl_subject_label *old_acl;
58758+ struct rlimit old_rlim[RLIM_NLIMITS];
58759+#endif
58760 struct linux_binprm *bprm;
58761 struct file *file;
58762 struct files_struct *displaced;
58763@@ -1437,6 +1546,8 @@ static int do_execve_common(struct filename *filename,
58764 if (IS_ERR(filename))
58765 return PTR_ERR(filename);
58766
58767+ gr_learn_resource(current, RLIMIT_NPROC, atomic_read(&current_user()->processes), 1);
58768+
58769 /*
58770 * We move the actual failure in case of RLIMIT_NPROC excess from
58771 * set*uid() to execve() because too many poorly written programs
58772@@ -1474,11 +1585,21 @@ static int do_execve_common(struct filename *filename,
58773 if (IS_ERR(file))
58774 goto out_unmark;
58775
58776+ if (gr_ptrace_readexec(file, bprm->unsafe)) {
58777+ retval = -EPERM;
58778+ goto out_unmark;
58779+ }
58780+
58781 sched_exec();
58782
58783 bprm->file = file;
58784 bprm->filename = bprm->interp = filename->name;
58785
58786+ if (!gr_acl_handle_execve(file->f_path.dentry, file->f_path.mnt)) {
58787+ retval = -EACCES;
58788+ goto out_unmark;
58789+ }
58790+
58791 retval = bprm_mm_init(bprm);
58792 if (retval)
58793 goto out_unmark;
58794@@ -1495,24 +1616,70 @@ static int do_execve_common(struct filename *filename,
58795 if (retval < 0)
58796 goto out;
58797
58798+#ifdef CONFIG_GRKERNSEC
58799+ old_acl = current->acl;
58800+ memcpy(old_rlim, current->signal->rlim, sizeof(old_rlim));
58801+ old_exec_file = current->exec_file;
58802+ get_file(file);
58803+ current->exec_file = file;
58804+#endif
58805+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
58806+ /* limit suid stack to 8MB
58807+ * we saved the old limits above and will restore them if this exec fails
58808+ */
58809+ if (((!uid_eq(bprm->cred->euid, current_euid())) || (!gid_eq(bprm->cred->egid, current_egid()))) &&
58810+ (old_rlim[RLIMIT_STACK].rlim_cur > (8 * 1024 * 1024)))
58811+ current->signal->rlim[RLIMIT_STACK].rlim_cur = 8 * 1024 * 1024;
58812+#endif
58813+
58814+ if (gr_process_kernel_exec_ban() || gr_process_suid_exec_ban(bprm)) {
58815+ retval = -EPERM;
58816+ goto out_fail;
58817+ }
58818+
58819+ if (!gr_tpe_allow(file)) {
58820+ retval = -EACCES;
58821+ goto out_fail;
58822+ }
58823+
58824+ if (gr_check_crash_exec(file)) {
58825+ retval = -EACCES;
58826+ goto out_fail;
58827+ }
58828+
58829+ retval = gr_set_proc_label(file->f_path.dentry, file->f_path.mnt,
58830+ bprm->unsafe);
58831+ if (retval < 0)
58832+ goto out_fail;
58833+
58834 retval = copy_strings_kernel(1, &bprm->filename, bprm);
58835 if (retval < 0)
58836- goto out;
58837+ goto out_fail;
58838
58839 bprm->exec = bprm->p;
58840 retval = copy_strings(bprm->envc, envp, bprm);
58841 if (retval < 0)
58842- goto out;
58843+ goto out_fail;
58844
58845 retval = copy_strings(bprm->argc, argv, bprm);
58846 if (retval < 0)
58847- goto out;
58848+ goto out_fail;
58849+
58850+ gr_log_chroot_exec(file->f_path.dentry, file->f_path.mnt);
58851+
58852+ gr_handle_exec_args(bprm, argv);
58853
58854 retval = exec_binprm(bprm);
58855 if (retval < 0)
58856- goto out;
58857+ goto out_fail;
58858+#ifdef CONFIG_GRKERNSEC
58859+ if (old_exec_file)
58860+ fput(old_exec_file);
58861+#endif
58862
58863 /* execve succeeded */
58864+
58865+ increment_exec_counter();
58866 current->fs->in_exec = 0;
58867 current->in_execve = 0;
58868 acct_update_integrals(current);
58869@@ -1523,6 +1690,14 @@ static int do_execve_common(struct filename *filename,
58870 put_files_struct(displaced);
58871 return retval;
58872
58873+out_fail:
58874+#ifdef CONFIG_GRKERNSEC
58875+ current->acl = old_acl;
58876+ memcpy(current->signal->rlim, old_rlim, sizeof(old_rlim));
58877+ fput(current->exec_file);
58878+ current->exec_file = old_exec_file;
58879+#endif
58880+
58881 out:
58882 if (bprm->mm) {
58883 acct_arg_size(bprm, 0);
58884@@ -1614,3 +1789,312 @@ COMPAT_SYSCALL_DEFINE3(execve, const char __user *, filename,
58885 return compat_do_execve(getname(filename), argv, envp);
58886 }
58887 #endif
58888+
58889+int pax_check_flags(unsigned long *flags)
58890+{
58891+ int retval = 0;
58892+
58893+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_SEGMEXEC)
58894+ if (*flags & MF_PAX_SEGMEXEC)
58895+ {
58896+ *flags &= ~MF_PAX_SEGMEXEC;
58897+ retval = -EINVAL;
58898+ }
58899+#endif
58900+
58901+ if ((*flags & MF_PAX_PAGEEXEC)
58902+
58903+#ifdef CONFIG_PAX_PAGEEXEC
58904+ && (*flags & MF_PAX_SEGMEXEC)
58905+#endif
58906+
58907+ )
58908+ {
58909+ *flags &= ~MF_PAX_PAGEEXEC;
58910+ retval = -EINVAL;
58911+ }
58912+
58913+ if ((*flags & MF_PAX_MPROTECT)
58914+
58915+#ifdef CONFIG_PAX_MPROTECT
58916+ && !(*flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC))
58917+#endif
58918+
58919+ )
58920+ {
58921+ *flags &= ~MF_PAX_MPROTECT;
58922+ retval = -EINVAL;
58923+ }
58924+
58925+ if ((*flags & MF_PAX_EMUTRAMP)
58926+
58927+#ifdef CONFIG_PAX_EMUTRAMP
58928+ && !(*flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC))
58929+#endif
58930+
58931+ )
58932+ {
58933+ *flags &= ~MF_PAX_EMUTRAMP;
58934+ retval = -EINVAL;
58935+ }
58936+
58937+ return retval;
58938+}
58939+
58940+EXPORT_SYMBOL(pax_check_flags);
58941+
58942+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
58943+char *pax_get_path(const struct path *path, char *buf, int buflen)
58944+{
58945+ char *pathname = d_path(path, buf, buflen);
58946+
58947+ if (IS_ERR(pathname))
58948+ goto toolong;
58949+
58950+ pathname = mangle_path(buf, pathname, "\t\n\\");
58951+ if (!pathname)
58952+ goto toolong;
58953+
58954+ *pathname = 0;
58955+ return buf;
58956+
58957+toolong:
58958+ return "<path too long>";
58959+}
58960+EXPORT_SYMBOL(pax_get_path);
58961+
58962+void pax_report_fault(struct pt_regs *regs, void *pc, void *sp)
58963+{
58964+ struct task_struct *tsk = current;
58965+ struct mm_struct *mm = current->mm;
58966+ char *buffer_exec = (char *)__get_free_page(GFP_KERNEL);
58967+ char *buffer_fault = (char *)__get_free_page(GFP_KERNEL);
58968+ char *path_exec = NULL;
58969+ char *path_fault = NULL;
58970+ unsigned long start = 0UL, end = 0UL, offset = 0UL;
58971+ siginfo_t info = { };
58972+
58973+ if (buffer_exec && buffer_fault) {
58974+ struct vm_area_struct *vma, *vma_exec = NULL, *vma_fault = NULL;
58975+
58976+ down_read(&mm->mmap_sem);
58977+ vma = mm->mmap;
58978+ while (vma && (!vma_exec || !vma_fault)) {
58979+ if (vma->vm_file && mm->exe_file == vma->vm_file && (vma->vm_flags & VM_EXEC))
58980+ vma_exec = vma;
58981+ if (vma->vm_start <= (unsigned long)pc && (unsigned long)pc < vma->vm_end)
58982+ vma_fault = vma;
58983+ vma = vma->vm_next;
58984+ }
58985+ if (vma_exec)
58986+ path_exec = pax_get_path(&vma_exec->vm_file->f_path, buffer_exec, PAGE_SIZE);
58987+ if (vma_fault) {
58988+ start = vma_fault->vm_start;
58989+ end = vma_fault->vm_end;
58990+ offset = vma_fault->vm_pgoff << PAGE_SHIFT;
58991+ if (vma_fault->vm_file)
58992+ path_fault = pax_get_path(&vma_fault->vm_file->f_path, buffer_fault, PAGE_SIZE);
58993+ else if ((unsigned long)pc >= mm->start_brk && (unsigned long)pc < mm->brk)
58994+ path_fault = "<heap>";
58995+ else if (vma_fault->vm_flags & (VM_GROWSDOWN | VM_GROWSUP))
58996+ path_fault = "<stack>";
58997+ else
58998+ path_fault = "<anonymous mapping>";
58999+ }
59000+ up_read(&mm->mmap_sem);
59001+ }
59002+ if (tsk->signal->curr_ip)
59003+ printk(KERN_ERR "PAX: From %pI4: execution attempt in: %s, %08lx-%08lx %08lx\n", &tsk->signal->curr_ip, path_fault, start, end, offset);
59004+ else
59005+ printk(KERN_ERR "PAX: execution attempt in: %s, %08lx-%08lx %08lx\n", path_fault, start, end, offset);
59006+ printk(KERN_ERR "PAX: terminating task: %s(%s):%d, uid/euid: %u/%u, PC: %p, SP: %p\n", path_exec, tsk->comm, task_pid_nr(tsk),
59007+ from_kuid_munged(&init_user_ns, task_uid(tsk)), from_kuid_munged(&init_user_ns, task_euid(tsk)), pc, sp);
59008+ free_page((unsigned long)buffer_exec);
59009+ free_page((unsigned long)buffer_fault);
59010+ pax_report_insns(regs, pc, sp);
59011+ info.si_signo = SIGKILL;
59012+ info.si_errno = 0;
59013+ info.si_code = SI_KERNEL;
59014+ info.si_pid = 0;
59015+ info.si_uid = 0;
59016+ do_coredump(&info);
59017+}
59018+#endif
59019+
59020+#ifdef CONFIG_PAX_REFCOUNT
59021+void pax_report_refcount_overflow(struct pt_regs *regs)
59022+{
59023+ if (current->signal->curr_ip)
59024+ printk(KERN_ERR "PAX: From %pI4: refcount overflow detected in: %s:%d, uid/euid: %u/%u\n",
59025+ &current->signal->curr_ip, current->comm, task_pid_nr(current),
59026+ from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()));
59027+ else
59028+ printk(KERN_ERR "PAX: refcount overflow detected in: %s:%d, uid/euid: %u/%u\n", current->comm, task_pid_nr(current),
59029+ from_kuid_munged(&init_user_ns, current_uid()), from_kuid_munged(&init_user_ns, current_euid()));
59030+ print_symbol(KERN_ERR "PAX: refcount overflow occured at: %s\n", instruction_pointer(regs));
59031+ preempt_disable();
59032+ show_regs(regs);
59033+ preempt_enable();
59034+ force_sig_info(SIGKILL, SEND_SIG_FORCED, current);
59035+}
59036+#endif
59037+
59038+#ifdef CONFIG_PAX_USERCOPY
59039+/* 0: not at all, 1: fully, 2: fully inside frame, -1: partially (implies an error) */
59040+static noinline int check_stack_object(const void *obj, unsigned long len)
59041+{
59042+ const void * const stack = task_stack_page(current);
59043+ const void * const stackend = stack + THREAD_SIZE;
59044+
59045+#if defined(CONFIG_FRAME_POINTER) && defined(CONFIG_X86)
59046+ const void *frame = NULL;
59047+ const void *oldframe;
59048+#endif
59049+
59050+ if (obj + len < obj)
59051+ return -1;
59052+
59053+ if (obj + len <= stack || stackend <= obj)
59054+ return 0;
59055+
59056+ if (obj < stack || stackend < obj + len)
59057+ return -1;
59058+
59059+#if defined(CONFIG_FRAME_POINTER) && defined(CONFIG_X86)
59060+ oldframe = __builtin_frame_address(1);
59061+ if (oldframe)
59062+ frame = __builtin_frame_address(2);
59063+ /*
59064+ low ----------------------------------------------> high
59065+ [saved bp][saved ip][args][local vars][saved bp][saved ip]
59066+ ^----------------^
59067+ allow copies only within here
59068+ */
59069+ while (stack <= frame && frame < stackend) {
59070+ /* if obj + len extends past the last frame, this
59071+ check won't pass and the next frame will be 0,
59072+ causing us to bail out and correctly report
59073+ the copy as invalid
59074+ */
59075+ if (obj + len <= frame)
59076+ return obj >= oldframe + 2 * sizeof(void *) ? 2 : -1;
59077+ oldframe = frame;
59078+ frame = *(const void * const *)frame;
59079+ }
59080+ return -1;
59081+#else
59082+ return 1;
59083+#endif
59084+}
59085+
59086+static __noreturn void pax_report_usercopy(const void *ptr, unsigned long len, bool to_user, const char *type)
59087+{
59088+ if (current->signal->curr_ip)
59089+ printk(KERN_ERR "PAX: From %pI4: kernel memory %s attempt detected %s %p (%s) (%lu bytes)\n",
59090+ &current->signal->curr_ip, to_user ? "leak" : "overwrite", to_user ? "from" : "to", ptr, type ? : "unknown", len);
59091+ else
59092+ printk(KERN_ERR "PAX: kernel memory %s attempt detected %s %p (%s) (%lu bytes)\n",
59093+ to_user ? "leak" : "overwrite", to_user ? "from" : "to", ptr, type ? : "unknown", len);
59094+ dump_stack();
59095+ gr_handle_kernel_exploit();
59096+ do_group_exit(SIGKILL);
59097+}
59098+#endif
59099+
59100+#ifdef CONFIG_PAX_USERCOPY
59101+
59102+static inline bool check_kernel_text_object(unsigned long low, unsigned long high)
59103+{
59104+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
59105+ unsigned long textlow = ktla_ktva((unsigned long)_stext);
59106+#ifdef CONFIG_MODULES
59107+ unsigned long texthigh = (unsigned long)MODULES_EXEC_VADDR;
59108+#else
59109+ unsigned long texthigh = ktla_ktva((unsigned long)_etext);
59110+#endif
59111+
59112+#else
59113+ unsigned long textlow = (unsigned long)_stext;
59114+ unsigned long texthigh = (unsigned long)_etext;
59115+
59116+#ifdef CONFIG_X86_64
59117+ /* check against linear mapping as well */
59118+ if (high > (unsigned long)__va(__pa(textlow)) &&
59119+ low < (unsigned long)__va(__pa(texthigh)))
59120+ return true;
59121+#endif
59122+
59123+#endif
59124+
59125+ if (high <= textlow || low >= texthigh)
59126+ return false;
59127+ else
59128+ return true;
59129+}
59130+#endif
59131+
59132+void __check_object_size(const void *ptr, unsigned long n, bool to_user, bool const_size)
59133+{
59134+#ifdef CONFIG_PAX_USERCOPY
59135+ const char *type;
59136+#endif
59137+
59138+#ifndef CONFIG_STACK_GROWSUP
59139+ unsigned long stackstart = (unsigned long)task_stack_page(current);
59140+ unsigned long currentsp = (unsigned long)&stackstart;
59141+ if (unlikely((currentsp < stackstart + 512 ||
59142+ currentsp >= stackstart + THREAD_SIZE) && !in_interrupt()))
59143+ BUG();
59144+#endif
59145+
59146+#ifndef CONFIG_PAX_USERCOPY_DEBUG
59147+ if (const_size)
59148+ return;
59149+#endif
59150+
59151+#ifdef CONFIG_PAX_USERCOPY
59152+ if (!n)
59153+ return;
59154+
59155+ type = check_heap_object(ptr, n);
59156+ if (!type) {
59157+ int ret = check_stack_object(ptr, n);
59158+ if (ret == 1 || ret == 2)
59159+ return;
59160+ if (ret == 0) {
59161+ if (check_kernel_text_object((unsigned long)ptr, (unsigned long)ptr + n))
59162+ type = "<kernel text>";
59163+ else
59164+ return;
59165+ } else
59166+ type = "<process stack>";
59167+ }
59168+
59169+ pax_report_usercopy(ptr, n, to_user, type);
59170+#endif
59171+
59172+}
59173+EXPORT_SYMBOL(__check_object_size);
59174+
59175+#ifdef CONFIG_PAX_MEMORY_STACKLEAK
59176+void pax_track_stack(void)
59177+{
59178+ unsigned long sp = (unsigned long)&sp;
59179+ if (sp < current_thread_info()->lowest_stack &&
59180+ sp > (unsigned long)task_stack_page(current))
59181+ current_thread_info()->lowest_stack = sp;
59182+ if (unlikely((sp & ~(THREAD_SIZE - 1)) < (THREAD_SIZE/16)))
59183+ BUG();
59184+}
59185+EXPORT_SYMBOL(pax_track_stack);
59186+#endif
59187+
59188+#ifdef CONFIG_PAX_SIZE_OVERFLOW
59189+void report_size_overflow(const char *file, unsigned int line, const char *func, const char *ssa_name)
59190+{
59191+ printk(KERN_ERR "PAX: size overflow detected in function %s %s:%u %s", func, file, line, ssa_name);
59192+ dump_stack();
59193+ do_group_exit(SIGKILL);
59194+}
59195+EXPORT_SYMBOL(report_size_overflow);
59196+#endif
59197diff --git a/fs/ext2/balloc.c b/fs/ext2/balloc.c
59198index 9f9992b..8b59411 100644
59199--- a/fs/ext2/balloc.c
59200+++ b/fs/ext2/balloc.c
59201@@ -1184,10 +1184,10 @@ static int ext2_has_free_blocks(struct ext2_sb_info *sbi)
59202
59203 free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
59204 root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count);
59205- if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) &&
59206+ if (free_blocks < root_blocks + 1 &&
59207 !uid_eq(sbi->s_resuid, current_fsuid()) &&
59208 (gid_eq(sbi->s_resgid, GLOBAL_ROOT_GID) ||
59209- !in_group_p (sbi->s_resgid))) {
59210+ !in_group_p (sbi->s_resgid)) && !capable_nolog(CAP_SYS_RESOURCE)) {
59211 return 0;
59212 }
59213 return 1;
59214diff --git a/fs/ext2/xattr.c b/fs/ext2/xattr.c
59215index 9142614..97484fa 100644
59216--- a/fs/ext2/xattr.c
59217+++ b/fs/ext2/xattr.c
59218@@ -247,7 +247,7 @@ ext2_xattr_list(struct dentry *dentry, char *buffer, size_t buffer_size)
59219 struct buffer_head *bh = NULL;
59220 struct ext2_xattr_entry *entry;
59221 char *end;
59222- size_t rest = buffer_size;
59223+ size_t rest = buffer_size, total_size = 0;
59224 int error;
59225
59226 ea_idebug(inode, "buffer=%p, buffer_size=%ld",
59227@@ -305,9 +305,10 @@ bad_block: ext2_error(inode->i_sb, "ext2_xattr_list",
59228 buffer += size;
59229 }
59230 rest -= size;
59231+ total_size += size;
59232 }
59233 }
59234- error = buffer_size - rest; /* total size */
59235+ error = total_size;
59236
59237 cleanup:
59238 brelse(bh);
59239diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
59240index 158b5d4..2432610 100644
59241--- a/fs/ext3/balloc.c
59242+++ b/fs/ext3/balloc.c
59243@@ -1438,10 +1438,10 @@ static int ext3_has_free_blocks(struct ext3_sb_info *sbi, int use_reservation)
59244
59245 free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
59246 root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count);
59247- if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) &&
59248+ if (free_blocks < root_blocks + 1 &&
59249 !use_reservation && !uid_eq(sbi->s_resuid, current_fsuid()) &&
59250 (gid_eq(sbi->s_resgid, GLOBAL_ROOT_GID) ||
59251- !in_group_p (sbi->s_resgid))) {
59252+ !in_group_p (sbi->s_resgid)) && !capable_nolog(CAP_SYS_RESOURCE)) {
59253 return 0;
59254 }
59255 return 1;
59256diff --git a/fs/ext3/xattr.c b/fs/ext3/xattr.c
59257index c6874be..f8a6ae8 100644
59258--- a/fs/ext3/xattr.c
59259+++ b/fs/ext3/xattr.c
59260@@ -330,7 +330,7 @@ static int
59261 ext3_xattr_list_entries(struct dentry *dentry, struct ext3_xattr_entry *entry,
59262 char *buffer, size_t buffer_size)
59263 {
59264- size_t rest = buffer_size;
59265+ size_t rest = buffer_size, total_size = 0;
59266
59267 for (; !IS_LAST_ENTRY(entry); entry = EXT3_XATTR_NEXT(entry)) {
59268 const struct xattr_handler *handler =
59269@@ -347,9 +347,10 @@ ext3_xattr_list_entries(struct dentry *dentry, struct ext3_xattr_entry *entry,
59270 buffer += size;
59271 }
59272 rest -= size;
59273+ total_size += size;
59274 }
59275 }
59276- return buffer_size - rest;
59277+ return total_size;
59278 }
59279
59280 static int
59281diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
59282index 5c56785..77698a2 100644
59283--- a/fs/ext4/balloc.c
59284+++ b/fs/ext4/balloc.c
59285@@ -534,8 +534,8 @@ static int ext4_has_free_clusters(struct ext4_sb_info *sbi,
59286 /* Hm, nope. Are (enough) root reserved clusters available? */
59287 if (uid_eq(sbi->s_resuid, current_fsuid()) ||
59288 (!gid_eq(sbi->s_resgid, GLOBAL_ROOT_GID) && in_group_p(sbi->s_resgid)) ||
59289- capable(CAP_SYS_RESOURCE) ||
59290- (flags & EXT4_MB_USE_ROOT_BLOCKS)) {
59291+ (flags & EXT4_MB_USE_ROOT_BLOCKS) ||
59292+ capable_nolog(CAP_SYS_RESOURCE)) {
59293
59294 if (free_clusters >= (nclusters + dirty_clusters +
59295 resv_clusters))
59296diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
59297index f542e48..c0275f5 100644
59298--- a/fs/ext4/ext4.h
59299+++ b/fs/ext4/ext4.h
59300@@ -1274,19 +1274,19 @@ struct ext4_sb_info {
59301 unsigned long s_mb_last_start;
59302
59303 /* stats for buddy allocator */
59304- atomic_t s_bal_reqs; /* number of reqs with len > 1 */
59305- atomic_t s_bal_success; /* we found long enough chunks */
59306- atomic_t s_bal_allocated; /* in blocks */
59307- atomic_t s_bal_ex_scanned; /* total extents scanned */
59308- atomic_t s_bal_goals; /* goal hits */
59309- atomic_t s_bal_breaks; /* too long searches */
59310- atomic_t s_bal_2orders; /* 2^order hits */
59311+ atomic_unchecked_t s_bal_reqs; /* number of reqs with len > 1 */
59312+ atomic_unchecked_t s_bal_success; /* we found long enough chunks */
59313+ atomic_unchecked_t s_bal_allocated; /* in blocks */
59314+ atomic_unchecked_t s_bal_ex_scanned; /* total extents scanned */
59315+ atomic_unchecked_t s_bal_goals; /* goal hits */
59316+ atomic_unchecked_t s_bal_breaks; /* too long searches */
59317+ atomic_unchecked_t s_bal_2orders; /* 2^order hits */
59318 spinlock_t s_bal_lock;
59319 unsigned long s_mb_buddies_generated;
59320 unsigned long long s_mb_generation_time;
59321- atomic_t s_mb_lost_chunks;
59322- atomic_t s_mb_preallocated;
59323- atomic_t s_mb_discarded;
59324+ atomic_unchecked_t s_mb_lost_chunks;
59325+ atomic_unchecked_t s_mb_preallocated;
59326+ atomic_unchecked_t s_mb_discarded;
59327 atomic_t s_lock_busy;
59328
59329 /* locality groups */
59330diff --git a/fs/ext4/indirect.c b/fs/ext4/indirect.c
59331index 594009f..c30cbe2 100644
59332--- a/fs/ext4/indirect.c
59333+++ b/fs/ext4/indirect.c
59334@@ -389,7 +389,13 @@ static int ext4_alloc_branch(handle_t *handle, struct inode *inode,
59335 return 0;
59336 failed:
59337 for (; i >= 0; i--) {
59338- if (i != indirect_blks && branch[i].bh)
59339+ /*
59340+ * We want to ext4_forget() only freshly allocated indirect
59341+ * blocks. Buffer for new_blocks[i-1] is at branch[i].bh and
59342+ * buffer at branch[0].bh is indirect block / inode already
59343+ * existing before ext4_alloc_branch() was called.
59344+ */
59345+ if (i > 0 && i != indirect_blks && branch[i].bh)
59346 ext4_forget(handle, 1, inode, branch[i].bh,
59347 branch[i].bh->b_blocknr);
59348 ext4_free_blocks(handle, inode, NULL, new_blocks[i],
59349@@ -1312,16 +1318,24 @@ static int free_hole_blocks(handle_t *handle, struct inode *inode,
59350 blk = *i_data;
59351 if (level > 0) {
59352 ext4_lblk_t first2;
59353+ ext4_lblk_t count2;
59354+
59355 bh = sb_bread(inode->i_sb, le32_to_cpu(blk));
59356 if (!bh) {
59357 EXT4_ERROR_INODE_BLOCK(inode, le32_to_cpu(blk),
59358 "Read failure");
59359 return -EIO;
59360 }
59361- first2 = (first > offset) ? first - offset : 0;
59362+ if (first > offset) {
59363+ first2 = first - offset;
59364+ count2 = count;
59365+ } else {
59366+ first2 = 0;
59367+ count2 = count - (offset - first);
59368+ }
59369 ret = free_hole_blocks(handle, inode, bh,
59370 (__le32 *)bh->b_data, level - 1,
59371- first2, count - offset,
59372+ first2, count2,
59373 inode->i_sb->s_blocksize >> 2);
59374 if (ret) {
59375 brelse(bh);
59376@@ -1331,8 +1345,8 @@ static int free_hole_blocks(handle_t *handle, struct inode *inode,
59377 if (level == 0 ||
59378 (bh && all_zeroes((__le32 *)bh->b_data,
59379 (__le32 *)bh->b_data + addr_per_block))) {
59380- ext4_free_data(handle, inode, parent_bh, &blk, &blk+1);
59381- *i_data = 0;
59382+ ext4_free_data(handle, inode, parent_bh,
59383+ i_data, i_data + 1);
59384 }
59385 brelse(bh);
59386 bh = NULL;
59387diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
59388index fe4e668..f983538 100644
59389--- a/fs/ext4/mballoc.c
59390+++ b/fs/ext4/mballoc.c
59391@@ -1889,7 +1889,7 @@ void ext4_mb_simple_scan_group(struct ext4_allocation_context *ac,
59392 BUG_ON(ac->ac_b_ex.fe_len != ac->ac_g_ex.fe_len);
59393
59394 if (EXT4_SB(sb)->s_mb_stats)
59395- atomic_inc(&EXT4_SB(sb)->s_bal_2orders);
59396+ atomic_inc_unchecked(&EXT4_SB(sb)->s_bal_2orders);
59397
59398 break;
59399 }
59400@@ -2199,7 +2199,7 @@ repeat:
59401 ac->ac_status = AC_STATUS_CONTINUE;
59402 ac->ac_flags |= EXT4_MB_HINT_FIRST;
59403 cr = 3;
59404- atomic_inc(&sbi->s_mb_lost_chunks);
59405+ atomic_inc_unchecked(&sbi->s_mb_lost_chunks);
59406 goto repeat;
59407 }
59408 }
59409@@ -2707,25 +2707,25 @@ int ext4_mb_release(struct super_block *sb)
59410 if (sbi->s_mb_stats) {
59411 ext4_msg(sb, KERN_INFO,
59412 "mballoc: %u blocks %u reqs (%u success)",
59413- atomic_read(&sbi->s_bal_allocated),
59414- atomic_read(&sbi->s_bal_reqs),
59415- atomic_read(&sbi->s_bal_success));
59416+ atomic_read_unchecked(&sbi->s_bal_allocated),
59417+ atomic_read_unchecked(&sbi->s_bal_reqs),
59418+ atomic_read_unchecked(&sbi->s_bal_success));
59419 ext4_msg(sb, KERN_INFO,
59420 "mballoc: %u extents scanned, %u goal hits, "
59421 "%u 2^N hits, %u breaks, %u lost",
59422- atomic_read(&sbi->s_bal_ex_scanned),
59423- atomic_read(&sbi->s_bal_goals),
59424- atomic_read(&sbi->s_bal_2orders),
59425- atomic_read(&sbi->s_bal_breaks),
59426- atomic_read(&sbi->s_mb_lost_chunks));
59427+ atomic_read_unchecked(&sbi->s_bal_ex_scanned),
59428+ atomic_read_unchecked(&sbi->s_bal_goals),
59429+ atomic_read_unchecked(&sbi->s_bal_2orders),
59430+ atomic_read_unchecked(&sbi->s_bal_breaks),
59431+ atomic_read_unchecked(&sbi->s_mb_lost_chunks));
59432 ext4_msg(sb, KERN_INFO,
59433 "mballoc: %lu generated and it took %Lu",
59434 sbi->s_mb_buddies_generated,
59435 sbi->s_mb_generation_time);
59436 ext4_msg(sb, KERN_INFO,
59437 "mballoc: %u preallocated, %u discarded",
59438- atomic_read(&sbi->s_mb_preallocated),
59439- atomic_read(&sbi->s_mb_discarded));
59440+ atomic_read_unchecked(&sbi->s_mb_preallocated),
59441+ atomic_read_unchecked(&sbi->s_mb_discarded));
59442 }
59443
59444 free_percpu(sbi->s_locality_groups);
59445@@ -3179,16 +3179,16 @@ static void ext4_mb_collect_stats(struct ext4_allocation_context *ac)
59446 struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb);
59447
59448 if (sbi->s_mb_stats && ac->ac_g_ex.fe_len > 1) {
59449- atomic_inc(&sbi->s_bal_reqs);
59450- atomic_add(ac->ac_b_ex.fe_len, &sbi->s_bal_allocated);
59451+ atomic_inc_unchecked(&sbi->s_bal_reqs);
59452+ atomic_add_unchecked(ac->ac_b_ex.fe_len, &sbi->s_bal_allocated);
59453 if (ac->ac_b_ex.fe_len >= ac->ac_o_ex.fe_len)
59454- atomic_inc(&sbi->s_bal_success);
59455- atomic_add(ac->ac_found, &sbi->s_bal_ex_scanned);
59456+ atomic_inc_unchecked(&sbi->s_bal_success);
59457+ atomic_add_unchecked(ac->ac_found, &sbi->s_bal_ex_scanned);
59458 if (ac->ac_g_ex.fe_start == ac->ac_b_ex.fe_start &&
59459 ac->ac_g_ex.fe_group == ac->ac_b_ex.fe_group)
59460- atomic_inc(&sbi->s_bal_goals);
59461+ atomic_inc_unchecked(&sbi->s_bal_goals);
59462 if (ac->ac_found > sbi->s_mb_max_to_scan)
59463- atomic_inc(&sbi->s_bal_breaks);
59464+ atomic_inc_unchecked(&sbi->s_bal_breaks);
59465 }
59466
59467 if (ac->ac_op == EXT4_MB_HISTORY_ALLOC)
59468@@ -3593,7 +3593,7 @@ ext4_mb_new_inode_pa(struct ext4_allocation_context *ac)
59469 trace_ext4_mb_new_inode_pa(ac, pa);
59470
59471 ext4_mb_use_inode_pa(ac, pa);
59472- atomic_add(pa->pa_free, &sbi->s_mb_preallocated);
59473+ atomic_add_unchecked(pa->pa_free, &sbi->s_mb_preallocated);
59474
59475 ei = EXT4_I(ac->ac_inode);
59476 grp = ext4_get_group_info(sb, ac->ac_b_ex.fe_group);
59477@@ -3653,7 +3653,7 @@ ext4_mb_new_group_pa(struct ext4_allocation_context *ac)
59478 trace_ext4_mb_new_group_pa(ac, pa);
59479
59480 ext4_mb_use_group_pa(ac, pa);
59481- atomic_add(pa->pa_free, &EXT4_SB(sb)->s_mb_preallocated);
59482+ atomic_add_unchecked(pa->pa_free, &EXT4_SB(sb)->s_mb_preallocated);
59483
59484 grp = ext4_get_group_info(sb, ac->ac_b_ex.fe_group);
59485 lg = ac->ac_lg;
59486@@ -3742,7 +3742,7 @@ ext4_mb_release_inode_pa(struct ext4_buddy *e4b, struct buffer_head *bitmap_bh,
59487 * from the bitmap and continue.
59488 */
59489 }
59490- atomic_add(free, &sbi->s_mb_discarded);
59491+ atomic_add_unchecked(free, &sbi->s_mb_discarded);
59492
59493 return err;
59494 }
59495@@ -3760,7 +3760,7 @@ ext4_mb_release_group_pa(struct ext4_buddy *e4b,
59496 ext4_get_group_no_and_offset(sb, pa->pa_pstart, &group, &bit);
59497 BUG_ON(group != e4b->bd_group && pa->pa_len != 0);
59498 mb_free_blocks(pa->pa_inode, e4b, bit, pa->pa_len);
59499- atomic_add(pa->pa_len, &EXT4_SB(sb)->s_mb_discarded);
59500+ atomic_add_unchecked(pa->pa_len, &EXT4_SB(sb)->s_mb_discarded);
59501 trace_ext4_mballoc_discard(sb, NULL, group, bit, pa->pa_len);
59502
59503 return 0;
59504diff --git a/fs/ext4/mmp.c b/fs/ext4/mmp.c
59505index 04434ad..6404663 100644
59506--- a/fs/ext4/mmp.c
59507+++ b/fs/ext4/mmp.c
59508@@ -113,7 +113,7 @@ static int read_mmp_block(struct super_block *sb, struct buffer_head **bh,
59509 void __dump_mmp_msg(struct super_block *sb, struct mmp_struct *mmp,
59510 const char *function, unsigned int line, const char *msg)
59511 {
59512- __ext4_warning(sb, function, line, msg);
59513+ __ext4_warning(sb, function, line, "%s", msg);
59514 __ext4_warning(sb, function, line,
59515 "MMP failure info: last update time: %llu, last update "
59516 "node: %s, last update device: %s\n",
59517diff --git a/fs/ext4/super.c b/fs/ext4/super.c
59518index 6f9e6fa..5431c02 100644
59519--- a/fs/ext4/super.c
59520+++ b/fs/ext4/super.c
59521@@ -1275,7 +1275,7 @@ static ext4_fsblk_t get_sb_block(void **data)
59522 }
59523
59524 #define DEFAULT_JOURNAL_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))
59525-static char deprecated_msg[] = "Mount option \"%s\" will be removed by %s\n"
59526+static const char deprecated_msg[] = "Mount option \"%s\" will be removed by %s\n"
59527 "Contact linux-ext4@vger.kernel.org if you think we should keep it.\n";
59528
59529 #ifdef CONFIG_QUOTA
59530@@ -2455,7 +2455,7 @@ struct ext4_attr {
59531 int offset;
59532 int deprecated_val;
59533 } u;
59534-};
59535+} __do_const;
59536
59537 static int parse_strtoull(const char *buf,
59538 unsigned long long max, unsigned long long *value)
59539diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
59540index 4eec399..1d9444c 100644
59541--- a/fs/ext4/xattr.c
59542+++ b/fs/ext4/xattr.c
59543@@ -383,7 +383,7 @@ static int
59544 ext4_xattr_list_entries(struct dentry *dentry, struct ext4_xattr_entry *entry,
59545 char *buffer, size_t buffer_size)
59546 {
59547- size_t rest = buffer_size;
59548+ size_t rest = buffer_size, total_size = 0;
59549
59550 for (; !IS_LAST_ENTRY(entry); entry = EXT4_XATTR_NEXT(entry)) {
59551 const struct xattr_handler *handler =
59552@@ -400,9 +400,10 @@ ext4_xattr_list_entries(struct dentry *dentry, struct ext4_xattr_entry *entry,
59553 buffer += size;
59554 }
59555 rest -= size;
59556+ total_size += size;
59557 }
59558 }
59559- return buffer_size - rest;
59560+ return total_size;
59561 }
59562
59563 static int
59564diff --git a/fs/fcntl.c b/fs/fcntl.c
59565index 72c82f6..a18b263 100644
59566--- a/fs/fcntl.c
59567+++ b/fs/fcntl.c
59568@@ -106,6 +106,11 @@ int __f_setown(struct file *filp, struct pid *pid, enum pid_type type,
59569 if (err)
59570 return err;
59571
59572+ if (gr_handle_chroot_fowner(pid, type))
59573+ return -ENOENT;
59574+ if (gr_check_protected_task_fowner(pid, type))
59575+ return -EACCES;
59576+
59577 f_modown(filp, pid, type, force);
59578 return 0;
59579 }
59580diff --git a/fs/fhandle.c b/fs/fhandle.c
59581index 999ff5c..ac037c9 100644
59582--- a/fs/fhandle.c
59583+++ b/fs/fhandle.c
59584@@ -8,6 +8,7 @@
59585 #include <linux/fs_struct.h>
59586 #include <linux/fsnotify.h>
59587 #include <linux/personality.h>
59588+#include <linux/grsecurity.h>
59589 #include <asm/uaccess.h>
59590 #include "internal.h"
59591 #include "mount.h"
59592@@ -67,8 +68,7 @@ static long do_sys_name_to_handle(struct path *path,
59593 } else
59594 retval = 0;
59595 /* copy the mount id */
59596- if (copy_to_user(mnt_id, &real_mount(path->mnt)->mnt_id,
59597- sizeof(*mnt_id)) ||
59598+ if (put_user(real_mount(path->mnt)->mnt_id, mnt_id) ||
59599 copy_to_user(ufh, handle,
59600 sizeof(struct file_handle) + handle_bytes))
59601 retval = -EFAULT;
59602@@ -175,7 +175,7 @@ static int handle_to_path(int mountdirfd, struct file_handle __user *ufh,
59603 * the directory. Ideally we would like CAP_DAC_SEARCH.
59604 * But we don't have that
59605 */
59606- if (!capable(CAP_DAC_READ_SEARCH)) {
59607+ if (!capable(CAP_DAC_READ_SEARCH) || !gr_chroot_fhandle()) {
59608 retval = -EPERM;
59609 goto out_err;
59610 }
59611diff --git a/fs/file.c b/fs/file.c
59612index 8f294cf..d0f3872 100644
59613--- a/fs/file.c
59614+++ b/fs/file.c
59615@@ -16,6 +16,7 @@
59616 #include <linux/slab.h>
59617 #include <linux/vmalloc.h>
59618 #include <linux/file.h>
59619+#include <linux/security.h>
59620 #include <linux/fdtable.h>
59621 #include <linux/bitops.h>
59622 #include <linux/interrupt.h>
59623@@ -144,7 +145,7 @@ out:
59624 * Return <0 error code on error; 1 on successful completion.
59625 * The files->file_lock should be held on entry, and will be held on exit.
59626 */
59627-static int expand_fdtable(struct files_struct *files, int nr)
59628+static int expand_fdtable(struct files_struct *files, unsigned int nr)
59629 __releases(files->file_lock)
59630 __acquires(files->file_lock)
59631 {
59632@@ -189,7 +190,7 @@ static int expand_fdtable(struct files_struct *files, int nr)
59633 * expanded and execution may have blocked.
59634 * The files->file_lock should be held on entry, and will be held on exit.
59635 */
59636-static int expand_files(struct files_struct *files, int nr)
59637+static int expand_files(struct files_struct *files, unsigned int nr)
59638 {
59639 struct fdtable *fdt;
59640
59641@@ -804,6 +805,7 @@ int replace_fd(unsigned fd, struct file *file, unsigned flags)
59642 if (!file)
59643 return __close_fd(files, fd);
59644
59645+ gr_learn_resource(current, RLIMIT_NOFILE, fd, 0);
59646 if (fd >= rlimit(RLIMIT_NOFILE))
59647 return -EBADF;
59648
59649@@ -830,6 +832,7 @@ SYSCALL_DEFINE3(dup3, unsigned int, oldfd, unsigned int, newfd, int, flags)
59650 if (unlikely(oldfd == newfd))
59651 return -EINVAL;
59652
59653+ gr_learn_resource(current, RLIMIT_NOFILE, newfd, 0);
59654 if (newfd >= rlimit(RLIMIT_NOFILE))
59655 return -EBADF;
59656
59657@@ -885,6 +888,7 @@ SYSCALL_DEFINE1(dup, unsigned int, fildes)
59658 int f_dupfd(unsigned int from, struct file *file, unsigned flags)
59659 {
59660 int err;
59661+ gr_learn_resource(current, RLIMIT_NOFILE, from, 0);
59662 if (from >= rlimit(RLIMIT_NOFILE))
59663 return -EINVAL;
59664 err = alloc_fd(from, flags);
59665diff --git a/fs/filesystems.c b/fs/filesystems.c
59666index 5797d45..7d7d79a 100644
59667--- a/fs/filesystems.c
59668+++ b/fs/filesystems.c
59669@@ -275,7 +275,11 @@ struct file_system_type *get_fs_type(const char *name)
59670 int len = dot ? dot - name : strlen(name);
59671
59672 fs = __get_fs_type(name, len);
59673+#ifdef CONFIG_GRKERNSEC_MODHARDEN
59674+ if (!fs && (___request_module(true, "grsec_modharden_fs", "fs-%.*s", len, name) == 0))
59675+#else
59676 if (!fs && (request_module("fs-%.*s", len, name) == 0))
59677+#endif
59678 fs = __get_fs_type(name, len);
59679
59680 if (dot && fs && !(fs->fs_flags & FS_HAS_SUBTYPE)) {
59681diff --git a/fs/fs_struct.c b/fs/fs_struct.c
59682index 7dca743..543d620 100644
59683--- a/fs/fs_struct.c
59684+++ b/fs/fs_struct.c
59685@@ -4,6 +4,7 @@
59686 #include <linux/path.h>
59687 #include <linux/slab.h>
59688 #include <linux/fs_struct.h>
59689+#include <linux/grsecurity.h>
59690 #include "internal.h"
59691
59692 /*
59693@@ -19,6 +20,7 @@ void set_fs_root(struct fs_struct *fs, const struct path *path)
59694 write_seqcount_begin(&fs->seq);
59695 old_root = fs->root;
59696 fs->root = *path;
59697+ gr_set_chroot_entries(current, path);
59698 write_seqcount_end(&fs->seq);
59699 spin_unlock(&fs->lock);
59700 if (old_root.dentry)
59701@@ -67,6 +69,10 @@ void chroot_fs_refs(const struct path *old_root, const struct path *new_root)
59702 int hits = 0;
59703 spin_lock(&fs->lock);
59704 write_seqcount_begin(&fs->seq);
59705+ /* this root replacement is only done by pivot_root,
59706+ leave grsec's chroot tagging alone for this task
59707+ so that a pivoted root isn't treated as a chroot
59708+ */
59709 hits += replace_path(&fs->root, old_root, new_root);
59710 hits += replace_path(&fs->pwd, old_root, new_root);
59711 write_seqcount_end(&fs->seq);
59712@@ -99,7 +105,8 @@ void exit_fs(struct task_struct *tsk)
59713 task_lock(tsk);
59714 spin_lock(&fs->lock);
59715 tsk->fs = NULL;
59716- kill = !--fs->users;
59717+ gr_clear_chroot_entries(tsk);
59718+ kill = !atomic_dec_return(&fs->users);
59719 spin_unlock(&fs->lock);
59720 task_unlock(tsk);
59721 if (kill)
59722@@ -112,7 +119,7 @@ struct fs_struct *copy_fs_struct(struct fs_struct *old)
59723 struct fs_struct *fs = kmem_cache_alloc(fs_cachep, GFP_KERNEL);
59724 /* We don't need to lock fs - think why ;-) */
59725 if (fs) {
59726- fs->users = 1;
59727+ atomic_set(&fs->users, 1);
59728 fs->in_exec = 0;
59729 spin_lock_init(&fs->lock);
59730 seqcount_init(&fs->seq);
59731@@ -121,6 +128,9 @@ struct fs_struct *copy_fs_struct(struct fs_struct *old)
59732 spin_lock(&old->lock);
59733 fs->root = old->root;
59734 path_get(&fs->root);
59735+ /* instead of calling gr_set_chroot_entries here,
59736+ we call it from every caller of this function
59737+ */
59738 fs->pwd = old->pwd;
59739 path_get(&fs->pwd);
59740 spin_unlock(&old->lock);
59741@@ -139,8 +149,9 @@ int unshare_fs_struct(void)
59742
59743 task_lock(current);
59744 spin_lock(&fs->lock);
59745- kill = !--fs->users;
59746+ kill = !atomic_dec_return(&fs->users);
59747 current->fs = new_fs;
59748+ gr_set_chroot_entries(current, &new_fs->root);
59749 spin_unlock(&fs->lock);
59750 task_unlock(current);
59751
59752@@ -153,13 +164,13 @@ EXPORT_SYMBOL_GPL(unshare_fs_struct);
59753
59754 int current_umask(void)
59755 {
59756- return current->fs->umask;
59757+ return current->fs->umask | gr_acl_umask();
59758 }
59759 EXPORT_SYMBOL(current_umask);
59760
59761 /* to be mentioned only in INIT_TASK */
59762 struct fs_struct init_fs = {
59763- .users = 1,
59764+ .users = ATOMIC_INIT(1),
59765 .lock = __SPIN_LOCK_UNLOCKED(init_fs.lock),
59766 .seq = SEQCNT_ZERO(init_fs.seq),
59767 .umask = 0022,
59768diff --git a/fs/fscache/cookie.c b/fs/fscache/cookie.c
59769index 29d7feb..303644d 100644
59770--- a/fs/fscache/cookie.c
59771+++ b/fs/fscache/cookie.c
59772@@ -19,7 +19,7 @@
59773
59774 struct kmem_cache *fscache_cookie_jar;
59775
59776-static atomic_t fscache_object_debug_id = ATOMIC_INIT(0);
59777+static atomic_unchecked_t fscache_object_debug_id = ATOMIC_INIT(0);
59778
59779 static int fscache_acquire_non_index_cookie(struct fscache_cookie *cookie);
59780 static int fscache_alloc_object(struct fscache_cache *cache,
59781@@ -69,11 +69,11 @@ struct fscache_cookie *__fscache_acquire_cookie(
59782 parent ? (char *) parent->def->name : "<no-parent>",
59783 def->name, netfs_data, enable);
59784
59785- fscache_stat(&fscache_n_acquires);
59786+ fscache_stat_unchecked(&fscache_n_acquires);
59787
59788 /* if there's no parent cookie, then we don't create one here either */
59789 if (!parent) {
59790- fscache_stat(&fscache_n_acquires_null);
59791+ fscache_stat_unchecked(&fscache_n_acquires_null);
59792 _leave(" [no parent]");
59793 return NULL;
59794 }
59795@@ -88,7 +88,7 @@ struct fscache_cookie *__fscache_acquire_cookie(
59796 /* allocate and initialise a cookie */
59797 cookie = kmem_cache_alloc(fscache_cookie_jar, GFP_KERNEL);
59798 if (!cookie) {
59799- fscache_stat(&fscache_n_acquires_oom);
59800+ fscache_stat_unchecked(&fscache_n_acquires_oom);
59801 _leave(" [ENOMEM]");
59802 return NULL;
59803 }
59804@@ -115,13 +115,13 @@ struct fscache_cookie *__fscache_acquire_cookie(
59805
59806 switch (cookie->def->type) {
59807 case FSCACHE_COOKIE_TYPE_INDEX:
59808- fscache_stat(&fscache_n_cookie_index);
59809+ fscache_stat_unchecked(&fscache_n_cookie_index);
59810 break;
59811 case FSCACHE_COOKIE_TYPE_DATAFILE:
59812- fscache_stat(&fscache_n_cookie_data);
59813+ fscache_stat_unchecked(&fscache_n_cookie_data);
59814 break;
59815 default:
59816- fscache_stat(&fscache_n_cookie_special);
59817+ fscache_stat_unchecked(&fscache_n_cookie_special);
59818 break;
59819 }
59820
59821@@ -135,7 +135,7 @@ struct fscache_cookie *__fscache_acquire_cookie(
59822 } else {
59823 atomic_dec(&parent->n_children);
59824 __fscache_cookie_put(cookie);
59825- fscache_stat(&fscache_n_acquires_nobufs);
59826+ fscache_stat_unchecked(&fscache_n_acquires_nobufs);
59827 _leave(" = NULL");
59828 return NULL;
59829 }
59830@@ -144,7 +144,7 @@ struct fscache_cookie *__fscache_acquire_cookie(
59831 }
59832 }
59833
59834- fscache_stat(&fscache_n_acquires_ok);
59835+ fscache_stat_unchecked(&fscache_n_acquires_ok);
59836 _leave(" = %p", cookie);
59837 return cookie;
59838 }
59839@@ -213,7 +213,7 @@ static int fscache_acquire_non_index_cookie(struct fscache_cookie *cookie)
59840 cache = fscache_select_cache_for_object(cookie->parent);
59841 if (!cache) {
59842 up_read(&fscache_addremove_sem);
59843- fscache_stat(&fscache_n_acquires_no_cache);
59844+ fscache_stat_unchecked(&fscache_n_acquires_no_cache);
59845 _leave(" = -ENOMEDIUM [no cache]");
59846 return -ENOMEDIUM;
59847 }
59848@@ -297,14 +297,14 @@ static int fscache_alloc_object(struct fscache_cache *cache,
59849 object = cache->ops->alloc_object(cache, cookie);
59850 fscache_stat_d(&fscache_n_cop_alloc_object);
59851 if (IS_ERR(object)) {
59852- fscache_stat(&fscache_n_object_no_alloc);
59853+ fscache_stat_unchecked(&fscache_n_object_no_alloc);
59854 ret = PTR_ERR(object);
59855 goto error;
59856 }
59857
59858- fscache_stat(&fscache_n_object_alloc);
59859+ fscache_stat_unchecked(&fscache_n_object_alloc);
59860
59861- object->debug_id = atomic_inc_return(&fscache_object_debug_id);
59862+ object->debug_id = atomic_inc_return_unchecked(&fscache_object_debug_id);
59863
59864 _debug("ALLOC OBJ%x: %s {%lx}",
59865 object->debug_id, cookie->def->name, object->events);
59866@@ -418,7 +418,7 @@ void __fscache_invalidate(struct fscache_cookie *cookie)
59867
59868 _enter("{%s}", cookie->def->name);
59869
59870- fscache_stat(&fscache_n_invalidates);
59871+ fscache_stat_unchecked(&fscache_n_invalidates);
59872
59873 /* Only permit invalidation of data files. Invalidating an index will
59874 * require the caller to release all its attachments to the tree rooted
59875@@ -477,10 +477,10 @@ void __fscache_update_cookie(struct fscache_cookie *cookie)
59876 {
59877 struct fscache_object *object;
59878
59879- fscache_stat(&fscache_n_updates);
59880+ fscache_stat_unchecked(&fscache_n_updates);
59881
59882 if (!cookie) {
59883- fscache_stat(&fscache_n_updates_null);
59884+ fscache_stat_unchecked(&fscache_n_updates_null);
59885 _leave(" [no cookie]");
59886 return;
59887 }
59888@@ -581,12 +581,12 @@ EXPORT_SYMBOL(__fscache_disable_cookie);
59889 */
59890 void __fscache_relinquish_cookie(struct fscache_cookie *cookie, bool retire)
59891 {
59892- fscache_stat(&fscache_n_relinquishes);
59893+ fscache_stat_unchecked(&fscache_n_relinquishes);
59894 if (retire)
59895- fscache_stat(&fscache_n_relinquishes_retire);
59896+ fscache_stat_unchecked(&fscache_n_relinquishes_retire);
59897
59898 if (!cookie) {
59899- fscache_stat(&fscache_n_relinquishes_null);
59900+ fscache_stat_unchecked(&fscache_n_relinquishes_null);
59901 _leave(" [no cookie]");
59902 return;
59903 }
59904@@ -687,7 +687,7 @@ int __fscache_check_consistency(struct fscache_cookie *cookie)
59905 if (test_bit(FSCACHE_IOERROR, &object->cache->flags))
59906 goto inconsistent;
59907
59908- op->debug_id = atomic_inc_return(&fscache_op_debug_id);
59909+ op->debug_id = atomic_inc_return_unchecked(&fscache_op_debug_id);
59910
59911 __fscache_use_cookie(cookie);
59912 if (fscache_submit_op(object, op) < 0)
59913diff --git a/fs/fscache/internal.h b/fs/fscache/internal.h
59914index 4226f66..0fb3f45 100644
59915--- a/fs/fscache/internal.h
59916+++ b/fs/fscache/internal.h
59917@@ -133,8 +133,8 @@ extern void fscache_operation_gc(struct work_struct *);
59918 extern int fscache_wait_for_deferred_lookup(struct fscache_cookie *);
59919 extern int fscache_wait_for_operation_activation(struct fscache_object *,
59920 struct fscache_operation *,
59921- atomic_t *,
59922- atomic_t *,
59923+ atomic_unchecked_t *,
59924+ atomic_unchecked_t *,
59925 void (*)(struct fscache_operation *));
59926 extern void fscache_invalidate_writes(struct fscache_cookie *);
59927
59928@@ -153,101 +153,101 @@ extern void fscache_proc_cleanup(void);
59929 * stats.c
59930 */
59931 #ifdef CONFIG_FSCACHE_STATS
59932-extern atomic_t fscache_n_ops_processed[FSCACHE_MAX_THREADS];
59933-extern atomic_t fscache_n_objs_processed[FSCACHE_MAX_THREADS];
59934+extern atomic_unchecked_t fscache_n_ops_processed[FSCACHE_MAX_THREADS];
59935+extern atomic_unchecked_t fscache_n_objs_processed[FSCACHE_MAX_THREADS];
59936
59937-extern atomic_t fscache_n_op_pend;
59938-extern atomic_t fscache_n_op_run;
59939-extern atomic_t fscache_n_op_enqueue;
59940-extern atomic_t fscache_n_op_deferred_release;
59941-extern atomic_t fscache_n_op_release;
59942-extern atomic_t fscache_n_op_gc;
59943-extern atomic_t fscache_n_op_cancelled;
59944-extern atomic_t fscache_n_op_rejected;
59945+extern atomic_unchecked_t fscache_n_op_pend;
59946+extern atomic_unchecked_t fscache_n_op_run;
59947+extern atomic_unchecked_t fscache_n_op_enqueue;
59948+extern atomic_unchecked_t fscache_n_op_deferred_release;
59949+extern atomic_unchecked_t fscache_n_op_release;
59950+extern atomic_unchecked_t fscache_n_op_gc;
59951+extern atomic_unchecked_t fscache_n_op_cancelled;
59952+extern atomic_unchecked_t fscache_n_op_rejected;
59953
59954-extern atomic_t fscache_n_attr_changed;
59955-extern atomic_t fscache_n_attr_changed_ok;
59956-extern atomic_t fscache_n_attr_changed_nobufs;
59957-extern atomic_t fscache_n_attr_changed_nomem;
59958-extern atomic_t fscache_n_attr_changed_calls;
59959+extern atomic_unchecked_t fscache_n_attr_changed;
59960+extern atomic_unchecked_t fscache_n_attr_changed_ok;
59961+extern atomic_unchecked_t fscache_n_attr_changed_nobufs;
59962+extern atomic_unchecked_t fscache_n_attr_changed_nomem;
59963+extern atomic_unchecked_t fscache_n_attr_changed_calls;
59964
59965-extern atomic_t fscache_n_allocs;
59966-extern atomic_t fscache_n_allocs_ok;
59967-extern atomic_t fscache_n_allocs_wait;
59968-extern atomic_t fscache_n_allocs_nobufs;
59969-extern atomic_t fscache_n_allocs_intr;
59970-extern atomic_t fscache_n_allocs_object_dead;
59971-extern atomic_t fscache_n_alloc_ops;
59972-extern atomic_t fscache_n_alloc_op_waits;
59973+extern atomic_unchecked_t fscache_n_allocs;
59974+extern atomic_unchecked_t fscache_n_allocs_ok;
59975+extern atomic_unchecked_t fscache_n_allocs_wait;
59976+extern atomic_unchecked_t fscache_n_allocs_nobufs;
59977+extern atomic_unchecked_t fscache_n_allocs_intr;
59978+extern atomic_unchecked_t fscache_n_allocs_object_dead;
59979+extern atomic_unchecked_t fscache_n_alloc_ops;
59980+extern atomic_unchecked_t fscache_n_alloc_op_waits;
59981
59982-extern atomic_t fscache_n_retrievals;
59983-extern atomic_t fscache_n_retrievals_ok;
59984-extern atomic_t fscache_n_retrievals_wait;
59985-extern atomic_t fscache_n_retrievals_nodata;
59986-extern atomic_t fscache_n_retrievals_nobufs;
59987-extern atomic_t fscache_n_retrievals_intr;
59988-extern atomic_t fscache_n_retrievals_nomem;
59989-extern atomic_t fscache_n_retrievals_object_dead;
59990-extern atomic_t fscache_n_retrieval_ops;
59991-extern atomic_t fscache_n_retrieval_op_waits;
59992+extern atomic_unchecked_t fscache_n_retrievals;
59993+extern atomic_unchecked_t fscache_n_retrievals_ok;
59994+extern atomic_unchecked_t fscache_n_retrievals_wait;
59995+extern atomic_unchecked_t fscache_n_retrievals_nodata;
59996+extern atomic_unchecked_t fscache_n_retrievals_nobufs;
59997+extern atomic_unchecked_t fscache_n_retrievals_intr;
59998+extern atomic_unchecked_t fscache_n_retrievals_nomem;
59999+extern atomic_unchecked_t fscache_n_retrievals_object_dead;
60000+extern atomic_unchecked_t fscache_n_retrieval_ops;
60001+extern atomic_unchecked_t fscache_n_retrieval_op_waits;
60002
60003-extern atomic_t fscache_n_stores;
60004-extern atomic_t fscache_n_stores_ok;
60005-extern atomic_t fscache_n_stores_again;
60006-extern atomic_t fscache_n_stores_nobufs;
60007-extern atomic_t fscache_n_stores_oom;
60008-extern atomic_t fscache_n_store_ops;
60009-extern atomic_t fscache_n_store_calls;
60010-extern atomic_t fscache_n_store_pages;
60011-extern atomic_t fscache_n_store_radix_deletes;
60012-extern atomic_t fscache_n_store_pages_over_limit;
60013+extern atomic_unchecked_t fscache_n_stores;
60014+extern atomic_unchecked_t fscache_n_stores_ok;
60015+extern atomic_unchecked_t fscache_n_stores_again;
60016+extern atomic_unchecked_t fscache_n_stores_nobufs;
60017+extern atomic_unchecked_t fscache_n_stores_oom;
60018+extern atomic_unchecked_t fscache_n_store_ops;
60019+extern atomic_unchecked_t fscache_n_store_calls;
60020+extern atomic_unchecked_t fscache_n_store_pages;
60021+extern atomic_unchecked_t fscache_n_store_radix_deletes;
60022+extern atomic_unchecked_t fscache_n_store_pages_over_limit;
60023
60024-extern atomic_t fscache_n_store_vmscan_not_storing;
60025-extern atomic_t fscache_n_store_vmscan_gone;
60026-extern atomic_t fscache_n_store_vmscan_busy;
60027-extern atomic_t fscache_n_store_vmscan_cancelled;
60028-extern atomic_t fscache_n_store_vmscan_wait;
60029+extern atomic_unchecked_t fscache_n_store_vmscan_not_storing;
60030+extern atomic_unchecked_t fscache_n_store_vmscan_gone;
60031+extern atomic_unchecked_t fscache_n_store_vmscan_busy;
60032+extern atomic_unchecked_t fscache_n_store_vmscan_cancelled;
60033+extern atomic_unchecked_t fscache_n_store_vmscan_wait;
60034
60035-extern atomic_t fscache_n_marks;
60036-extern atomic_t fscache_n_uncaches;
60037+extern atomic_unchecked_t fscache_n_marks;
60038+extern atomic_unchecked_t fscache_n_uncaches;
60039
60040-extern atomic_t fscache_n_acquires;
60041-extern atomic_t fscache_n_acquires_null;
60042-extern atomic_t fscache_n_acquires_no_cache;
60043-extern atomic_t fscache_n_acquires_ok;
60044-extern atomic_t fscache_n_acquires_nobufs;
60045-extern atomic_t fscache_n_acquires_oom;
60046+extern atomic_unchecked_t fscache_n_acquires;
60047+extern atomic_unchecked_t fscache_n_acquires_null;
60048+extern atomic_unchecked_t fscache_n_acquires_no_cache;
60049+extern atomic_unchecked_t fscache_n_acquires_ok;
60050+extern atomic_unchecked_t fscache_n_acquires_nobufs;
60051+extern atomic_unchecked_t fscache_n_acquires_oom;
60052
60053-extern atomic_t fscache_n_invalidates;
60054-extern atomic_t fscache_n_invalidates_run;
60055+extern atomic_unchecked_t fscache_n_invalidates;
60056+extern atomic_unchecked_t fscache_n_invalidates_run;
60057
60058-extern atomic_t fscache_n_updates;
60059-extern atomic_t fscache_n_updates_null;
60060-extern atomic_t fscache_n_updates_run;
60061+extern atomic_unchecked_t fscache_n_updates;
60062+extern atomic_unchecked_t fscache_n_updates_null;
60063+extern atomic_unchecked_t fscache_n_updates_run;
60064
60065-extern atomic_t fscache_n_relinquishes;
60066-extern atomic_t fscache_n_relinquishes_null;
60067-extern atomic_t fscache_n_relinquishes_waitcrt;
60068-extern atomic_t fscache_n_relinquishes_retire;
60069+extern atomic_unchecked_t fscache_n_relinquishes;
60070+extern atomic_unchecked_t fscache_n_relinquishes_null;
60071+extern atomic_unchecked_t fscache_n_relinquishes_waitcrt;
60072+extern atomic_unchecked_t fscache_n_relinquishes_retire;
60073
60074-extern atomic_t fscache_n_cookie_index;
60075-extern atomic_t fscache_n_cookie_data;
60076-extern atomic_t fscache_n_cookie_special;
60077+extern atomic_unchecked_t fscache_n_cookie_index;
60078+extern atomic_unchecked_t fscache_n_cookie_data;
60079+extern atomic_unchecked_t fscache_n_cookie_special;
60080
60081-extern atomic_t fscache_n_object_alloc;
60082-extern atomic_t fscache_n_object_no_alloc;
60083-extern atomic_t fscache_n_object_lookups;
60084-extern atomic_t fscache_n_object_lookups_negative;
60085-extern atomic_t fscache_n_object_lookups_positive;
60086-extern atomic_t fscache_n_object_lookups_timed_out;
60087-extern atomic_t fscache_n_object_created;
60088-extern atomic_t fscache_n_object_avail;
60089-extern atomic_t fscache_n_object_dead;
60090+extern atomic_unchecked_t fscache_n_object_alloc;
60091+extern atomic_unchecked_t fscache_n_object_no_alloc;
60092+extern atomic_unchecked_t fscache_n_object_lookups;
60093+extern atomic_unchecked_t fscache_n_object_lookups_negative;
60094+extern atomic_unchecked_t fscache_n_object_lookups_positive;
60095+extern atomic_unchecked_t fscache_n_object_lookups_timed_out;
60096+extern atomic_unchecked_t fscache_n_object_created;
60097+extern atomic_unchecked_t fscache_n_object_avail;
60098+extern atomic_unchecked_t fscache_n_object_dead;
60099
60100-extern atomic_t fscache_n_checkaux_none;
60101-extern atomic_t fscache_n_checkaux_okay;
60102-extern atomic_t fscache_n_checkaux_update;
60103-extern atomic_t fscache_n_checkaux_obsolete;
60104+extern atomic_unchecked_t fscache_n_checkaux_none;
60105+extern atomic_unchecked_t fscache_n_checkaux_okay;
60106+extern atomic_unchecked_t fscache_n_checkaux_update;
60107+extern atomic_unchecked_t fscache_n_checkaux_obsolete;
60108
60109 extern atomic_t fscache_n_cop_alloc_object;
60110 extern atomic_t fscache_n_cop_lookup_object;
60111@@ -272,6 +272,11 @@ static inline void fscache_stat(atomic_t *stat)
60112 atomic_inc(stat);
60113 }
60114
60115+static inline void fscache_stat_unchecked(atomic_unchecked_t *stat)
60116+{
60117+ atomic_inc_unchecked(stat);
60118+}
60119+
60120 static inline void fscache_stat_d(atomic_t *stat)
60121 {
60122 atomic_dec(stat);
60123@@ -284,6 +289,7 @@ extern const struct file_operations fscache_stats_fops;
60124
60125 #define __fscache_stat(stat) (NULL)
60126 #define fscache_stat(stat) do {} while (0)
60127+#define fscache_stat_unchecked(stat) do {} while (0)
60128 #define fscache_stat_d(stat) do {} while (0)
60129 #endif
60130
60131diff --git a/fs/fscache/object.c b/fs/fscache/object.c
60132index d3b4539..ed0c659 100644
60133--- a/fs/fscache/object.c
60134+++ b/fs/fscache/object.c
60135@@ -454,7 +454,7 @@ static const struct fscache_state *fscache_look_up_object(struct fscache_object
60136 _debug("LOOKUP \"%s\" in \"%s\"",
60137 cookie->def->name, object->cache->tag->name);
60138
60139- fscache_stat(&fscache_n_object_lookups);
60140+ fscache_stat_unchecked(&fscache_n_object_lookups);
60141 fscache_stat(&fscache_n_cop_lookup_object);
60142 ret = object->cache->ops->lookup_object(object);
60143 fscache_stat_d(&fscache_n_cop_lookup_object);
60144@@ -464,7 +464,7 @@ static const struct fscache_state *fscache_look_up_object(struct fscache_object
60145 if (ret == -ETIMEDOUT) {
60146 /* probably stuck behind another object, so move this one to
60147 * the back of the queue */
60148- fscache_stat(&fscache_n_object_lookups_timed_out);
60149+ fscache_stat_unchecked(&fscache_n_object_lookups_timed_out);
60150 _leave(" [timeout]");
60151 return NO_TRANSIT;
60152 }
60153@@ -492,7 +492,7 @@ void fscache_object_lookup_negative(struct fscache_object *object)
60154 _enter("{OBJ%x,%s}", object->debug_id, object->state->name);
60155
60156 if (!test_and_set_bit(FSCACHE_OBJECT_IS_LOOKED_UP, &object->flags)) {
60157- fscache_stat(&fscache_n_object_lookups_negative);
60158+ fscache_stat_unchecked(&fscache_n_object_lookups_negative);
60159
60160 /* Allow write requests to begin stacking up and read requests to begin
60161 * returning ENODATA.
60162@@ -527,7 +527,7 @@ void fscache_obtained_object(struct fscache_object *object)
60163 /* if we were still looking up, then we must have a positive lookup
60164 * result, in which case there may be data available */
60165 if (!test_and_set_bit(FSCACHE_OBJECT_IS_LOOKED_UP, &object->flags)) {
60166- fscache_stat(&fscache_n_object_lookups_positive);
60167+ fscache_stat_unchecked(&fscache_n_object_lookups_positive);
60168
60169 /* We do (presumably) have data */
60170 clear_bit_unlock(FSCACHE_COOKIE_NO_DATA_YET, &cookie->flags);
60171@@ -539,7 +539,7 @@ void fscache_obtained_object(struct fscache_object *object)
60172 clear_bit_unlock(FSCACHE_COOKIE_LOOKING_UP, &cookie->flags);
60173 wake_up_bit(&cookie->flags, FSCACHE_COOKIE_LOOKING_UP);
60174 } else {
60175- fscache_stat(&fscache_n_object_created);
60176+ fscache_stat_unchecked(&fscache_n_object_created);
60177 }
60178
60179 set_bit(FSCACHE_OBJECT_IS_AVAILABLE, &object->flags);
60180@@ -575,7 +575,7 @@ static const struct fscache_state *fscache_object_available(struct fscache_objec
60181 fscache_stat_d(&fscache_n_cop_lookup_complete);
60182
60183 fscache_hist(fscache_obj_instantiate_histogram, object->lookup_jif);
60184- fscache_stat(&fscache_n_object_avail);
60185+ fscache_stat_unchecked(&fscache_n_object_avail);
60186
60187 _leave("");
60188 return transit_to(JUMPSTART_DEPS);
60189@@ -722,7 +722,7 @@ static const struct fscache_state *fscache_drop_object(struct fscache_object *ob
60190
60191 /* this just shifts the object release to the work processor */
60192 fscache_put_object(object);
60193- fscache_stat(&fscache_n_object_dead);
60194+ fscache_stat_unchecked(&fscache_n_object_dead);
60195
60196 _leave("");
60197 return transit_to(OBJECT_DEAD);
60198@@ -887,7 +887,7 @@ enum fscache_checkaux fscache_check_aux(struct fscache_object *object,
60199 enum fscache_checkaux result;
60200
60201 if (!object->cookie->def->check_aux) {
60202- fscache_stat(&fscache_n_checkaux_none);
60203+ fscache_stat_unchecked(&fscache_n_checkaux_none);
60204 return FSCACHE_CHECKAUX_OKAY;
60205 }
60206
60207@@ -896,17 +896,17 @@ enum fscache_checkaux fscache_check_aux(struct fscache_object *object,
60208 switch (result) {
60209 /* entry okay as is */
60210 case FSCACHE_CHECKAUX_OKAY:
60211- fscache_stat(&fscache_n_checkaux_okay);
60212+ fscache_stat_unchecked(&fscache_n_checkaux_okay);
60213 break;
60214
60215 /* entry requires update */
60216 case FSCACHE_CHECKAUX_NEEDS_UPDATE:
60217- fscache_stat(&fscache_n_checkaux_update);
60218+ fscache_stat_unchecked(&fscache_n_checkaux_update);
60219 break;
60220
60221 /* entry requires deletion */
60222 case FSCACHE_CHECKAUX_OBSOLETE:
60223- fscache_stat(&fscache_n_checkaux_obsolete);
60224+ fscache_stat_unchecked(&fscache_n_checkaux_obsolete);
60225 break;
60226
60227 default:
60228@@ -992,7 +992,7 @@ static const struct fscache_state *fscache_invalidate_object(struct fscache_obje
60229 {
60230 const struct fscache_state *s;
60231
60232- fscache_stat(&fscache_n_invalidates_run);
60233+ fscache_stat_unchecked(&fscache_n_invalidates_run);
60234 fscache_stat(&fscache_n_cop_invalidate_object);
60235 s = _fscache_invalidate_object(object, event);
60236 fscache_stat_d(&fscache_n_cop_invalidate_object);
60237@@ -1007,7 +1007,7 @@ static const struct fscache_state *fscache_update_object(struct fscache_object *
60238 {
60239 _enter("{OBJ%x},%d", object->debug_id, event);
60240
60241- fscache_stat(&fscache_n_updates_run);
60242+ fscache_stat_unchecked(&fscache_n_updates_run);
60243 fscache_stat(&fscache_n_cop_update_object);
60244 object->cache->ops->update_object(object);
60245 fscache_stat_d(&fscache_n_cop_update_object);
60246diff --git a/fs/fscache/operation.c b/fs/fscache/operation.c
60247index 318071a..379938b 100644
60248--- a/fs/fscache/operation.c
60249+++ b/fs/fscache/operation.c
60250@@ -17,7 +17,7 @@
60251 #include <linux/slab.h>
60252 #include "internal.h"
60253
60254-atomic_t fscache_op_debug_id;
60255+atomic_unchecked_t fscache_op_debug_id;
60256 EXPORT_SYMBOL(fscache_op_debug_id);
60257
60258 /**
60259@@ -39,7 +39,7 @@ void fscache_enqueue_operation(struct fscache_operation *op)
60260 ASSERTCMP(atomic_read(&op->usage), >, 0);
60261 ASSERTCMP(op->state, ==, FSCACHE_OP_ST_IN_PROGRESS);
60262
60263- fscache_stat(&fscache_n_op_enqueue);
60264+ fscache_stat_unchecked(&fscache_n_op_enqueue);
60265 switch (op->flags & FSCACHE_OP_TYPE) {
60266 case FSCACHE_OP_ASYNC:
60267 _debug("queue async");
60268@@ -73,7 +73,7 @@ static void fscache_run_op(struct fscache_object *object,
60269 wake_up_bit(&op->flags, FSCACHE_OP_WAITING);
60270 if (op->processor)
60271 fscache_enqueue_operation(op);
60272- fscache_stat(&fscache_n_op_run);
60273+ fscache_stat_unchecked(&fscache_n_op_run);
60274 }
60275
60276 /*
60277@@ -105,11 +105,11 @@ int fscache_submit_exclusive_op(struct fscache_object *object,
60278 if (object->n_in_progress > 0) {
60279 atomic_inc(&op->usage);
60280 list_add_tail(&op->pend_link, &object->pending_ops);
60281- fscache_stat(&fscache_n_op_pend);
60282+ fscache_stat_unchecked(&fscache_n_op_pend);
60283 } else if (!list_empty(&object->pending_ops)) {
60284 atomic_inc(&op->usage);
60285 list_add_tail(&op->pend_link, &object->pending_ops);
60286- fscache_stat(&fscache_n_op_pend);
60287+ fscache_stat_unchecked(&fscache_n_op_pend);
60288 fscache_start_operations(object);
60289 } else {
60290 ASSERTCMP(object->n_in_progress, ==, 0);
60291@@ -125,7 +125,7 @@ int fscache_submit_exclusive_op(struct fscache_object *object,
60292 object->n_exclusive++; /* reads and writes must wait */
60293 atomic_inc(&op->usage);
60294 list_add_tail(&op->pend_link, &object->pending_ops);
60295- fscache_stat(&fscache_n_op_pend);
60296+ fscache_stat_unchecked(&fscache_n_op_pend);
60297 ret = 0;
60298 } else {
60299 /* If we're in any other state, there must have been an I/O
60300@@ -212,11 +212,11 @@ int fscache_submit_op(struct fscache_object *object,
60301 if (object->n_exclusive > 0) {
60302 atomic_inc(&op->usage);
60303 list_add_tail(&op->pend_link, &object->pending_ops);
60304- fscache_stat(&fscache_n_op_pend);
60305+ fscache_stat_unchecked(&fscache_n_op_pend);
60306 } else if (!list_empty(&object->pending_ops)) {
60307 atomic_inc(&op->usage);
60308 list_add_tail(&op->pend_link, &object->pending_ops);
60309- fscache_stat(&fscache_n_op_pend);
60310+ fscache_stat_unchecked(&fscache_n_op_pend);
60311 fscache_start_operations(object);
60312 } else {
60313 ASSERTCMP(object->n_exclusive, ==, 0);
60314@@ -228,10 +228,10 @@ int fscache_submit_op(struct fscache_object *object,
60315 object->n_ops++;
60316 atomic_inc(&op->usage);
60317 list_add_tail(&op->pend_link, &object->pending_ops);
60318- fscache_stat(&fscache_n_op_pend);
60319+ fscache_stat_unchecked(&fscache_n_op_pend);
60320 ret = 0;
60321 } else if (fscache_object_is_dying(object)) {
60322- fscache_stat(&fscache_n_op_rejected);
60323+ fscache_stat_unchecked(&fscache_n_op_rejected);
60324 op->state = FSCACHE_OP_ST_CANCELLED;
60325 ret = -ENOBUFS;
60326 } else if (!test_bit(FSCACHE_IOERROR, &object->cache->flags)) {
60327@@ -310,7 +310,7 @@ int fscache_cancel_op(struct fscache_operation *op,
60328 ret = -EBUSY;
60329 if (op->state == FSCACHE_OP_ST_PENDING) {
60330 ASSERT(!list_empty(&op->pend_link));
60331- fscache_stat(&fscache_n_op_cancelled);
60332+ fscache_stat_unchecked(&fscache_n_op_cancelled);
60333 list_del_init(&op->pend_link);
60334 if (do_cancel)
60335 do_cancel(op);
60336@@ -342,7 +342,7 @@ void fscache_cancel_all_ops(struct fscache_object *object)
60337 while (!list_empty(&object->pending_ops)) {
60338 op = list_entry(object->pending_ops.next,
60339 struct fscache_operation, pend_link);
60340- fscache_stat(&fscache_n_op_cancelled);
60341+ fscache_stat_unchecked(&fscache_n_op_cancelled);
60342 list_del_init(&op->pend_link);
60343
60344 ASSERTCMP(op->state, ==, FSCACHE_OP_ST_PENDING);
60345@@ -414,7 +414,7 @@ void fscache_put_operation(struct fscache_operation *op)
60346 op->state, ==, FSCACHE_OP_ST_CANCELLED);
60347 op->state = FSCACHE_OP_ST_DEAD;
60348
60349- fscache_stat(&fscache_n_op_release);
60350+ fscache_stat_unchecked(&fscache_n_op_release);
60351
60352 if (op->release) {
60353 op->release(op);
60354@@ -433,7 +433,7 @@ void fscache_put_operation(struct fscache_operation *op)
60355 * lock, and defer it otherwise */
60356 if (!spin_trylock(&object->lock)) {
60357 _debug("defer put");
60358- fscache_stat(&fscache_n_op_deferred_release);
60359+ fscache_stat_unchecked(&fscache_n_op_deferred_release);
60360
60361 cache = object->cache;
60362 spin_lock(&cache->op_gc_list_lock);
60363@@ -486,7 +486,7 @@ void fscache_operation_gc(struct work_struct *work)
60364
60365 _debug("GC DEFERRED REL OBJ%x OP%x",
60366 object->debug_id, op->debug_id);
60367- fscache_stat(&fscache_n_op_gc);
60368+ fscache_stat_unchecked(&fscache_n_op_gc);
60369
60370 ASSERTCMP(atomic_read(&op->usage), ==, 0);
60371 ASSERTCMP(op->state, ==, FSCACHE_OP_ST_DEAD);
60372diff --git a/fs/fscache/page.c b/fs/fscache/page.c
60373index 7f5c658..6c1e164 100644
60374--- a/fs/fscache/page.c
60375+++ b/fs/fscache/page.c
60376@@ -61,7 +61,7 @@ try_again:
60377 val = radix_tree_lookup(&cookie->stores, page->index);
60378 if (!val) {
60379 rcu_read_unlock();
60380- fscache_stat(&fscache_n_store_vmscan_not_storing);
60381+ fscache_stat_unchecked(&fscache_n_store_vmscan_not_storing);
60382 __fscache_uncache_page(cookie, page);
60383 return true;
60384 }
60385@@ -91,11 +91,11 @@ try_again:
60386 spin_unlock(&cookie->stores_lock);
60387
60388 if (xpage) {
60389- fscache_stat(&fscache_n_store_vmscan_cancelled);
60390- fscache_stat(&fscache_n_store_radix_deletes);
60391+ fscache_stat_unchecked(&fscache_n_store_vmscan_cancelled);
60392+ fscache_stat_unchecked(&fscache_n_store_radix_deletes);
60393 ASSERTCMP(xpage, ==, page);
60394 } else {
60395- fscache_stat(&fscache_n_store_vmscan_gone);
60396+ fscache_stat_unchecked(&fscache_n_store_vmscan_gone);
60397 }
60398
60399 wake_up_bit(&cookie->flags, 0);
60400@@ -110,11 +110,11 @@ page_busy:
60401 * sleeping on memory allocation, so we may need to impose a timeout
60402 * too. */
60403 if (!(gfp & __GFP_WAIT) || !(gfp & __GFP_FS)) {
60404- fscache_stat(&fscache_n_store_vmscan_busy);
60405+ fscache_stat_unchecked(&fscache_n_store_vmscan_busy);
60406 return false;
60407 }
60408
60409- fscache_stat(&fscache_n_store_vmscan_wait);
60410+ fscache_stat_unchecked(&fscache_n_store_vmscan_wait);
60411 __fscache_wait_on_page_write(cookie, page);
60412 gfp &= ~__GFP_WAIT;
60413 goto try_again;
60414@@ -140,7 +140,7 @@ static void fscache_end_page_write(struct fscache_object *object,
60415 FSCACHE_COOKIE_STORING_TAG);
60416 if (!radix_tree_tag_get(&cookie->stores, page->index,
60417 FSCACHE_COOKIE_PENDING_TAG)) {
60418- fscache_stat(&fscache_n_store_radix_deletes);
60419+ fscache_stat_unchecked(&fscache_n_store_radix_deletes);
60420 xpage = radix_tree_delete(&cookie->stores, page->index);
60421 }
60422 spin_unlock(&cookie->stores_lock);
60423@@ -161,7 +161,7 @@ static void fscache_attr_changed_op(struct fscache_operation *op)
60424
60425 _enter("{OBJ%x OP%x}", object->debug_id, op->debug_id);
60426
60427- fscache_stat(&fscache_n_attr_changed_calls);
60428+ fscache_stat_unchecked(&fscache_n_attr_changed_calls);
60429
60430 if (fscache_object_is_active(object)) {
60431 fscache_stat(&fscache_n_cop_attr_changed);
60432@@ -188,11 +188,11 @@ int __fscache_attr_changed(struct fscache_cookie *cookie)
60433
60434 ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);
60435
60436- fscache_stat(&fscache_n_attr_changed);
60437+ fscache_stat_unchecked(&fscache_n_attr_changed);
60438
60439 op = kzalloc(sizeof(*op), GFP_KERNEL);
60440 if (!op) {
60441- fscache_stat(&fscache_n_attr_changed_nomem);
60442+ fscache_stat_unchecked(&fscache_n_attr_changed_nomem);
60443 _leave(" = -ENOMEM");
60444 return -ENOMEM;
60445 }
60446@@ -214,7 +214,7 @@ int __fscache_attr_changed(struct fscache_cookie *cookie)
60447 if (fscache_submit_exclusive_op(object, op) < 0)
60448 goto nobufs;
60449 spin_unlock(&cookie->lock);
60450- fscache_stat(&fscache_n_attr_changed_ok);
60451+ fscache_stat_unchecked(&fscache_n_attr_changed_ok);
60452 fscache_put_operation(op);
60453 _leave(" = 0");
60454 return 0;
60455@@ -225,7 +225,7 @@ nobufs:
60456 kfree(op);
60457 if (wake_cookie)
60458 __fscache_wake_unused_cookie(cookie);
60459- fscache_stat(&fscache_n_attr_changed_nobufs);
60460+ fscache_stat_unchecked(&fscache_n_attr_changed_nobufs);
60461 _leave(" = %d", -ENOBUFS);
60462 return -ENOBUFS;
60463 }
60464@@ -264,7 +264,7 @@ static struct fscache_retrieval *fscache_alloc_retrieval(
60465 /* allocate a retrieval operation and attempt to submit it */
60466 op = kzalloc(sizeof(*op), GFP_NOIO);
60467 if (!op) {
60468- fscache_stat(&fscache_n_retrievals_nomem);
60469+ fscache_stat_unchecked(&fscache_n_retrievals_nomem);
60470 return NULL;
60471 }
60472
60473@@ -294,13 +294,13 @@ int fscache_wait_for_deferred_lookup(struct fscache_cookie *cookie)
60474 return 0;
60475 }
60476
60477- fscache_stat(&fscache_n_retrievals_wait);
60478+ fscache_stat_unchecked(&fscache_n_retrievals_wait);
60479
60480 jif = jiffies;
60481 if (wait_on_bit(&cookie->flags, FSCACHE_COOKIE_LOOKING_UP,
60482 fscache_wait_bit_interruptible,
60483 TASK_INTERRUPTIBLE) != 0) {
60484- fscache_stat(&fscache_n_retrievals_intr);
60485+ fscache_stat_unchecked(&fscache_n_retrievals_intr);
60486 _leave(" = -ERESTARTSYS");
60487 return -ERESTARTSYS;
60488 }
60489@@ -329,8 +329,8 @@ static void fscache_do_cancel_retrieval(struct fscache_operation *_op)
60490 */
60491 int fscache_wait_for_operation_activation(struct fscache_object *object,
60492 struct fscache_operation *op,
60493- atomic_t *stat_op_waits,
60494- atomic_t *stat_object_dead,
60495+ atomic_unchecked_t *stat_op_waits,
60496+ atomic_unchecked_t *stat_object_dead,
60497 void (*do_cancel)(struct fscache_operation *))
60498 {
60499 int ret;
60500@@ -340,7 +340,7 @@ int fscache_wait_for_operation_activation(struct fscache_object *object,
60501
60502 _debug(">>> WT");
60503 if (stat_op_waits)
60504- fscache_stat(stat_op_waits);
60505+ fscache_stat_unchecked(stat_op_waits);
60506 if (wait_on_bit(&op->flags, FSCACHE_OP_WAITING,
60507 fscache_wait_bit_interruptible,
60508 TASK_INTERRUPTIBLE) != 0) {
60509@@ -358,7 +358,7 @@ int fscache_wait_for_operation_activation(struct fscache_object *object,
60510 check_if_dead:
60511 if (op->state == FSCACHE_OP_ST_CANCELLED) {
60512 if (stat_object_dead)
60513- fscache_stat(stat_object_dead);
60514+ fscache_stat_unchecked(stat_object_dead);
60515 _leave(" = -ENOBUFS [cancelled]");
60516 return -ENOBUFS;
60517 }
60518@@ -366,7 +366,7 @@ check_if_dead:
60519 pr_err("%s() = -ENOBUFS [obj dead %d]\n", __func__, op->state);
60520 fscache_cancel_op(op, do_cancel);
60521 if (stat_object_dead)
60522- fscache_stat(stat_object_dead);
60523+ fscache_stat_unchecked(stat_object_dead);
60524 return -ENOBUFS;
60525 }
60526 return 0;
60527@@ -394,7 +394,7 @@ int __fscache_read_or_alloc_page(struct fscache_cookie *cookie,
60528
60529 _enter("%p,%p,,,", cookie, page);
60530
60531- fscache_stat(&fscache_n_retrievals);
60532+ fscache_stat_unchecked(&fscache_n_retrievals);
60533
60534 if (hlist_empty(&cookie->backing_objects))
60535 goto nobufs;
60536@@ -436,7 +436,7 @@ int __fscache_read_or_alloc_page(struct fscache_cookie *cookie,
60537 goto nobufs_unlock_dec;
60538 spin_unlock(&cookie->lock);
60539
60540- fscache_stat(&fscache_n_retrieval_ops);
60541+ fscache_stat_unchecked(&fscache_n_retrieval_ops);
60542
60543 /* pin the netfs read context in case we need to do the actual netfs
60544 * read because we've encountered a cache read failure */
60545@@ -467,15 +467,15 @@ int __fscache_read_or_alloc_page(struct fscache_cookie *cookie,
60546
60547 error:
60548 if (ret == -ENOMEM)
60549- fscache_stat(&fscache_n_retrievals_nomem);
60550+ fscache_stat_unchecked(&fscache_n_retrievals_nomem);
60551 else if (ret == -ERESTARTSYS)
60552- fscache_stat(&fscache_n_retrievals_intr);
60553+ fscache_stat_unchecked(&fscache_n_retrievals_intr);
60554 else if (ret == -ENODATA)
60555- fscache_stat(&fscache_n_retrievals_nodata);
60556+ fscache_stat_unchecked(&fscache_n_retrievals_nodata);
60557 else if (ret < 0)
60558- fscache_stat(&fscache_n_retrievals_nobufs);
60559+ fscache_stat_unchecked(&fscache_n_retrievals_nobufs);
60560 else
60561- fscache_stat(&fscache_n_retrievals_ok);
60562+ fscache_stat_unchecked(&fscache_n_retrievals_ok);
60563
60564 fscache_put_retrieval(op);
60565 _leave(" = %d", ret);
60566@@ -490,7 +490,7 @@ nobufs_unlock:
60567 __fscache_wake_unused_cookie(cookie);
60568 kfree(op);
60569 nobufs:
60570- fscache_stat(&fscache_n_retrievals_nobufs);
60571+ fscache_stat_unchecked(&fscache_n_retrievals_nobufs);
60572 _leave(" = -ENOBUFS");
60573 return -ENOBUFS;
60574 }
60575@@ -529,7 +529,7 @@ int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie,
60576
60577 _enter("%p,,%d,,,", cookie, *nr_pages);
60578
60579- fscache_stat(&fscache_n_retrievals);
60580+ fscache_stat_unchecked(&fscache_n_retrievals);
60581
60582 if (hlist_empty(&cookie->backing_objects))
60583 goto nobufs;
60584@@ -567,7 +567,7 @@ int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie,
60585 goto nobufs_unlock_dec;
60586 spin_unlock(&cookie->lock);
60587
60588- fscache_stat(&fscache_n_retrieval_ops);
60589+ fscache_stat_unchecked(&fscache_n_retrieval_ops);
60590
60591 /* pin the netfs read context in case we need to do the actual netfs
60592 * read because we've encountered a cache read failure */
60593@@ -598,15 +598,15 @@ int __fscache_read_or_alloc_pages(struct fscache_cookie *cookie,
60594
60595 error:
60596 if (ret == -ENOMEM)
60597- fscache_stat(&fscache_n_retrievals_nomem);
60598+ fscache_stat_unchecked(&fscache_n_retrievals_nomem);
60599 else if (ret == -ERESTARTSYS)
60600- fscache_stat(&fscache_n_retrievals_intr);
60601+ fscache_stat_unchecked(&fscache_n_retrievals_intr);
60602 else if (ret == -ENODATA)
60603- fscache_stat(&fscache_n_retrievals_nodata);
60604+ fscache_stat_unchecked(&fscache_n_retrievals_nodata);
60605 else if (ret < 0)
60606- fscache_stat(&fscache_n_retrievals_nobufs);
60607+ fscache_stat_unchecked(&fscache_n_retrievals_nobufs);
60608 else
60609- fscache_stat(&fscache_n_retrievals_ok);
60610+ fscache_stat_unchecked(&fscache_n_retrievals_ok);
60611
60612 fscache_put_retrieval(op);
60613 _leave(" = %d", ret);
60614@@ -621,7 +621,7 @@ nobufs_unlock:
60615 if (wake_cookie)
60616 __fscache_wake_unused_cookie(cookie);
60617 nobufs:
60618- fscache_stat(&fscache_n_retrievals_nobufs);
60619+ fscache_stat_unchecked(&fscache_n_retrievals_nobufs);
60620 _leave(" = -ENOBUFS");
60621 return -ENOBUFS;
60622 }
60623@@ -646,7 +646,7 @@ int __fscache_alloc_page(struct fscache_cookie *cookie,
60624
60625 _enter("%p,%p,,,", cookie, page);
60626
60627- fscache_stat(&fscache_n_allocs);
60628+ fscache_stat_unchecked(&fscache_n_allocs);
60629
60630 if (hlist_empty(&cookie->backing_objects))
60631 goto nobufs;
60632@@ -680,7 +680,7 @@ int __fscache_alloc_page(struct fscache_cookie *cookie,
60633 goto nobufs_unlock_dec;
60634 spin_unlock(&cookie->lock);
60635
60636- fscache_stat(&fscache_n_alloc_ops);
60637+ fscache_stat_unchecked(&fscache_n_alloc_ops);
60638
60639 ret = fscache_wait_for_operation_activation(
60640 object, &op->op,
60641@@ -697,11 +697,11 @@ int __fscache_alloc_page(struct fscache_cookie *cookie,
60642
60643 error:
60644 if (ret == -ERESTARTSYS)
60645- fscache_stat(&fscache_n_allocs_intr);
60646+ fscache_stat_unchecked(&fscache_n_allocs_intr);
60647 else if (ret < 0)
60648- fscache_stat(&fscache_n_allocs_nobufs);
60649+ fscache_stat_unchecked(&fscache_n_allocs_nobufs);
60650 else
60651- fscache_stat(&fscache_n_allocs_ok);
60652+ fscache_stat_unchecked(&fscache_n_allocs_ok);
60653
60654 fscache_put_retrieval(op);
60655 _leave(" = %d", ret);
60656@@ -715,7 +715,7 @@ nobufs_unlock:
60657 if (wake_cookie)
60658 __fscache_wake_unused_cookie(cookie);
60659 nobufs:
60660- fscache_stat(&fscache_n_allocs_nobufs);
60661+ fscache_stat_unchecked(&fscache_n_allocs_nobufs);
60662 _leave(" = -ENOBUFS");
60663 return -ENOBUFS;
60664 }
60665@@ -791,7 +791,7 @@ static void fscache_write_op(struct fscache_operation *_op)
60666
60667 spin_lock(&cookie->stores_lock);
60668
60669- fscache_stat(&fscache_n_store_calls);
60670+ fscache_stat_unchecked(&fscache_n_store_calls);
60671
60672 /* find a page to store */
60673 page = NULL;
60674@@ -802,7 +802,7 @@ static void fscache_write_op(struct fscache_operation *_op)
60675 page = results[0];
60676 _debug("gang %d [%lx]", n, page->index);
60677 if (page->index > op->store_limit) {
60678- fscache_stat(&fscache_n_store_pages_over_limit);
60679+ fscache_stat_unchecked(&fscache_n_store_pages_over_limit);
60680 goto superseded;
60681 }
60682
60683@@ -814,7 +814,7 @@ static void fscache_write_op(struct fscache_operation *_op)
60684 spin_unlock(&cookie->stores_lock);
60685 spin_unlock(&object->lock);
60686
60687- fscache_stat(&fscache_n_store_pages);
60688+ fscache_stat_unchecked(&fscache_n_store_pages);
60689 fscache_stat(&fscache_n_cop_write_page);
60690 ret = object->cache->ops->write_page(op, page);
60691 fscache_stat_d(&fscache_n_cop_write_page);
60692@@ -918,7 +918,7 @@ int __fscache_write_page(struct fscache_cookie *cookie,
60693 ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);
60694 ASSERT(PageFsCache(page));
60695
60696- fscache_stat(&fscache_n_stores);
60697+ fscache_stat_unchecked(&fscache_n_stores);
60698
60699 if (test_bit(FSCACHE_COOKIE_INVALIDATING, &cookie->flags)) {
60700 _leave(" = -ENOBUFS [invalidating]");
60701@@ -977,7 +977,7 @@ int __fscache_write_page(struct fscache_cookie *cookie,
60702 spin_unlock(&cookie->stores_lock);
60703 spin_unlock(&object->lock);
60704
60705- op->op.debug_id = atomic_inc_return(&fscache_op_debug_id);
60706+ op->op.debug_id = atomic_inc_return_unchecked(&fscache_op_debug_id);
60707 op->store_limit = object->store_limit;
60708
60709 __fscache_use_cookie(cookie);
60710@@ -986,8 +986,8 @@ int __fscache_write_page(struct fscache_cookie *cookie,
60711
60712 spin_unlock(&cookie->lock);
60713 radix_tree_preload_end();
60714- fscache_stat(&fscache_n_store_ops);
60715- fscache_stat(&fscache_n_stores_ok);
60716+ fscache_stat_unchecked(&fscache_n_store_ops);
60717+ fscache_stat_unchecked(&fscache_n_stores_ok);
60718
60719 /* the work queue now carries its own ref on the object */
60720 fscache_put_operation(&op->op);
60721@@ -995,14 +995,14 @@ int __fscache_write_page(struct fscache_cookie *cookie,
60722 return 0;
60723
60724 already_queued:
60725- fscache_stat(&fscache_n_stores_again);
60726+ fscache_stat_unchecked(&fscache_n_stores_again);
60727 already_pending:
60728 spin_unlock(&cookie->stores_lock);
60729 spin_unlock(&object->lock);
60730 spin_unlock(&cookie->lock);
60731 radix_tree_preload_end();
60732 kfree(op);
60733- fscache_stat(&fscache_n_stores_ok);
60734+ fscache_stat_unchecked(&fscache_n_stores_ok);
60735 _leave(" = 0");
60736 return 0;
60737
60738@@ -1024,14 +1024,14 @@ nobufs:
60739 kfree(op);
60740 if (wake_cookie)
60741 __fscache_wake_unused_cookie(cookie);
60742- fscache_stat(&fscache_n_stores_nobufs);
60743+ fscache_stat_unchecked(&fscache_n_stores_nobufs);
60744 _leave(" = -ENOBUFS");
60745 return -ENOBUFS;
60746
60747 nomem_free:
60748 kfree(op);
60749 nomem:
60750- fscache_stat(&fscache_n_stores_oom);
60751+ fscache_stat_unchecked(&fscache_n_stores_oom);
60752 _leave(" = -ENOMEM");
60753 return -ENOMEM;
60754 }
60755@@ -1049,7 +1049,7 @@ void __fscache_uncache_page(struct fscache_cookie *cookie, struct page *page)
60756 ASSERTCMP(cookie->def->type, !=, FSCACHE_COOKIE_TYPE_INDEX);
60757 ASSERTCMP(page, !=, NULL);
60758
60759- fscache_stat(&fscache_n_uncaches);
60760+ fscache_stat_unchecked(&fscache_n_uncaches);
60761
60762 /* cache withdrawal may beat us to it */
60763 if (!PageFsCache(page))
60764@@ -1100,7 +1100,7 @@ void fscache_mark_page_cached(struct fscache_retrieval *op, struct page *page)
60765 struct fscache_cookie *cookie = op->op.object->cookie;
60766
60767 #ifdef CONFIG_FSCACHE_STATS
60768- atomic_inc(&fscache_n_marks);
60769+ atomic_inc_unchecked(&fscache_n_marks);
60770 #endif
60771
60772 _debug("- mark %p{%lx}", page, page->index);
60773diff --git a/fs/fscache/stats.c b/fs/fscache/stats.c
60774index 40d13c7..ddf52b9 100644
60775--- a/fs/fscache/stats.c
60776+++ b/fs/fscache/stats.c
60777@@ -18,99 +18,99 @@
60778 /*
60779 * operation counters
60780 */
60781-atomic_t fscache_n_op_pend;
60782-atomic_t fscache_n_op_run;
60783-atomic_t fscache_n_op_enqueue;
60784-atomic_t fscache_n_op_requeue;
60785-atomic_t fscache_n_op_deferred_release;
60786-atomic_t fscache_n_op_release;
60787-atomic_t fscache_n_op_gc;
60788-atomic_t fscache_n_op_cancelled;
60789-atomic_t fscache_n_op_rejected;
60790+atomic_unchecked_t fscache_n_op_pend;
60791+atomic_unchecked_t fscache_n_op_run;
60792+atomic_unchecked_t fscache_n_op_enqueue;
60793+atomic_unchecked_t fscache_n_op_requeue;
60794+atomic_unchecked_t fscache_n_op_deferred_release;
60795+atomic_unchecked_t fscache_n_op_release;
60796+atomic_unchecked_t fscache_n_op_gc;
60797+atomic_unchecked_t fscache_n_op_cancelled;
60798+atomic_unchecked_t fscache_n_op_rejected;
60799
60800-atomic_t fscache_n_attr_changed;
60801-atomic_t fscache_n_attr_changed_ok;
60802-atomic_t fscache_n_attr_changed_nobufs;
60803-atomic_t fscache_n_attr_changed_nomem;
60804-atomic_t fscache_n_attr_changed_calls;
60805+atomic_unchecked_t fscache_n_attr_changed;
60806+atomic_unchecked_t fscache_n_attr_changed_ok;
60807+atomic_unchecked_t fscache_n_attr_changed_nobufs;
60808+atomic_unchecked_t fscache_n_attr_changed_nomem;
60809+atomic_unchecked_t fscache_n_attr_changed_calls;
60810
60811-atomic_t fscache_n_allocs;
60812-atomic_t fscache_n_allocs_ok;
60813-atomic_t fscache_n_allocs_wait;
60814-atomic_t fscache_n_allocs_nobufs;
60815-atomic_t fscache_n_allocs_intr;
60816-atomic_t fscache_n_allocs_object_dead;
60817-atomic_t fscache_n_alloc_ops;
60818-atomic_t fscache_n_alloc_op_waits;
60819+atomic_unchecked_t fscache_n_allocs;
60820+atomic_unchecked_t fscache_n_allocs_ok;
60821+atomic_unchecked_t fscache_n_allocs_wait;
60822+atomic_unchecked_t fscache_n_allocs_nobufs;
60823+atomic_unchecked_t fscache_n_allocs_intr;
60824+atomic_unchecked_t fscache_n_allocs_object_dead;
60825+atomic_unchecked_t fscache_n_alloc_ops;
60826+atomic_unchecked_t fscache_n_alloc_op_waits;
60827
60828-atomic_t fscache_n_retrievals;
60829-atomic_t fscache_n_retrievals_ok;
60830-atomic_t fscache_n_retrievals_wait;
60831-atomic_t fscache_n_retrievals_nodata;
60832-atomic_t fscache_n_retrievals_nobufs;
60833-atomic_t fscache_n_retrievals_intr;
60834-atomic_t fscache_n_retrievals_nomem;
60835-atomic_t fscache_n_retrievals_object_dead;
60836-atomic_t fscache_n_retrieval_ops;
60837-atomic_t fscache_n_retrieval_op_waits;
60838+atomic_unchecked_t fscache_n_retrievals;
60839+atomic_unchecked_t fscache_n_retrievals_ok;
60840+atomic_unchecked_t fscache_n_retrievals_wait;
60841+atomic_unchecked_t fscache_n_retrievals_nodata;
60842+atomic_unchecked_t fscache_n_retrievals_nobufs;
60843+atomic_unchecked_t fscache_n_retrievals_intr;
60844+atomic_unchecked_t fscache_n_retrievals_nomem;
60845+atomic_unchecked_t fscache_n_retrievals_object_dead;
60846+atomic_unchecked_t fscache_n_retrieval_ops;
60847+atomic_unchecked_t fscache_n_retrieval_op_waits;
60848
60849-atomic_t fscache_n_stores;
60850-atomic_t fscache_n_stores_ok;
60851-atomic_t fscache_n_stores_again;
60852-atomic_t fscache_n_stores_nobufs;
60853-atomic_t fscache_n_stores_oom;
60854-atomic_t fscache_n_store_ops;
60855-atomic_t fscache_n_store_calls;
60856-atomic_t fscache_n_store_pages;
60857-atomic_t fscache_n_store_radix_deletes;
60858-atomic_t fscache_n_store_pages_over_limit;
60859+atomic_unchecked_t fscache_n_stores;
60860+atomic_unchecked_t fscache_n_stores_ok;
60861+atomic_unchecked_t fscache_n_stores_again;
60862+atomic_unchecked_t fscache_n_stores_nobufs;
60863+atomic_unchecked_t fscache_n_stores_oom;
60864+atomic_unchecked_t fscache_n_store_ops;
60865+atomic_unchecked_t fscache_n_store_calls;
60866+atomic_unchecked_t fscache_n_store_pages;
60867+atomic_unchecked_t fscache_n_store_radix_deletes;
60868+atomic_unchecked_t fscache_n_store_pages_over_limit;
60869
60870-atomic_t fscache_n_store_vmscan_not_storing;
60871-atomic_t fscache_n_store_vmscan_gone;
60872-atomic_t fscache_n_store_vmscan_busy;
60873-atomic_t fscache_n_store_vmscan_cancelled;
60874-atomic_t fscache_n_store_vmscan_wait;
60875+atomic_unchecked_t fscache_n_store_vmscan_not_storing;
60876+atomic_unchecked_t fscache_n_store_vmscan_gone;
60877+atomic_unchecked_t fscache_n_store_vmscan_busy;
60878+atomic_unchecked_t fscache_n_store_vmscan_cancelled;
60879+atomic_unchecked_t fscache_n_store_vmscan_wait;
60880
60881-atomic_t fscache_n_marks;
60882-atomic_t fscache_n_uncaches;
60883+atomic_unchecked_t fscache_n_marks;
60884+atomic_unchecked_t fscache_n_uncaches;
60885
60886-atomic_t fscache_n_acquires;
60887-atomic_t fscache_n_acquires_null;
60888-atomic_t fscache_n_acquires_no_cache;
60889-atomic_t fscache_n_acquires_ok;
60890-atomic_t fscache_n_acquires_nobufs;
60891-atomic_t fscache_n_acquires_oom;
60892+atomic_unchecked_t fscache_n_acquires;
60893+atomic_unchecked_t fscache_n_acquires_null;
60894+atomic_unchecked_t fscache_n_acquires_no_cache;
60895+atomic_unchecked_t fscache_n_acquires_ok;
60896+atomic_unchecked_t fscache_n_acquires_nobufs;
60897+atomic_unchecked_t fscache_n_acquires_oom;
60898
60899-atomic_t fscache_n_invalidates;
60900-atomic_t fscache_n_invalidates_run;
60901+atomic_unchecked_t fscache_n_invalidates;
60902+atomic_unchecked_t fscache_n_invalidates_run;
60903
60904-atomic_t fscache_n_updates;
60905-atomic_t fscache_n_updates_null;
60906-atomic_t fscache_n_updates_run;
60907+atomic_unchecked_t fscache_n_updates;
60908+atomic_unchecked_t fscache_n_updates_null;
60909+atomic_unchecked_t fscache_n_updates_run;
60910
60911-atomic_t fscache_n_relinquishes;
60912-atomic_t fscache_n_relinquishes_null;
60913-atomic_t fscache_n_relinquishes_waitcrt;
60914-atomic_t fscache_n_relinquishes_retire;
60915+atomic_unchecked_t fscache_n_relinquishes;
60916+atomic_unchecked_t fscache_n_relinquishes_null;
60917+atomic_unchecked_t fscache_n_relinquishes_waitcrt;
60918+atomic_unchecked_t fscache_n_relinquishes_retire;
60919
60920-atomic_t fscache_n_cookie_index;
60921-atomic_t fscache_n_cookie_data;
60922-atomic_t fscache_n_cookie_special;
60923+atomic_unchecked_t fscache_n_cookie_index;
60924+atomic_unchecked_t fscache_n_cookie_data;
60925+atomic_unchecked_t fscache_n_cookie_special;
60926
60927-atomic_t fscache_n_object_alloc;
60928-atomic_t fscache_n_object_no_alloc;
60929-atomic_t fscache_n_object_lookups;
60930-atomic_t fscache_n_object_lookups_negative;
60931-atomic_t fscache_n_object_lookups_positive;
60932-atomic_t fscache_n_object_lookups_timed_out;
60933-atomic_t fscache_n_object_created;
60934-atomic_t fscache_n_object_avail;
60935-atomic_t fscache_n_object_dead;
60936+atomic_unchecked_t fscache_n_object_alloc;
60937+atomic_unchecked_t fscache_n_object_no_alloc;
60938+atomic_unchecked_t fscache_n_object_lookups;
60939+atomic_unchecked_t fscache_n_object_lookups_negative;
60940+atomic_unchecked_t fscache_n_object_lookups_positive;
60941+atomic_unchecked_t fscache_n_object_lookups_timed_out;
60942+atomic_unchecked_t fscache_n_object_created;
60943+atomic_unchecked_t fscache_n_object_avail;
60944+atomic_unchecked_t fscache_n_object_dead;
60945
60946-atomic_t fscache_n_checkaux_none;
60947-atomic_t fscache_n_checkaux_okay;
60948-atomic_t fscache_n_checkaux_update;
60949-atomic_t fscache_n_checkaux_obsolete;
60950+atomic_unchecked_t fscache_n_checkaux_none;
60951+atomic_unchecked_t fscache_n_checkaux_okay;
60952+atomic_unchecked_t fscache_n_checkaux_update;
60953+atomic_unchecked_t fscache_n_checkaux_obsolete;
60954
60955 atomic_t fscache_n_cop_alloc_object;
60956 atomic_t fscache_n_cop_lookup_object;
60957@@ -138,118 +138,118 @@ static int fscache_stats_show(struct seq_file *m, void *v)
60958 seq_puts(m, "FS-Cache statistics\n");
60959
60960 seq_printf(m, "Cookies: idx=%u dat=%u spc=%u\n",
60961- atomic_read(&fscache_n_cookie_index),
60962- atomic_read(&fscache_n_cookie_data),
60963- atomic_read(&fscache_n_cookie_special));
60964+ atomic_read_unchecked(&fscache_n_cookie_index),
60965+ atomic_read_unchecked(&fscache_n_cookie_data),
60966+ atomic_read_unchecked(&fscache_n_cookie_special));
60967
60968 seq_printf(m, "Objects: alc=%u nal=%u avl=%u ded=%u\n",
60969- atomic_read(&fscache_n_object_alloc),
60970- atomic_read(&fscache_n_object_no_alloc),
60971- atomic_read(&fscache_n_object_avail),
60972- atomic_read(&fscache_n_object_dead));
60973+ atomic_read_unchecked(&fscache_n_object_alloc),
60974+ atomic_read_unchecked(&fscache_n_object_no_alloc),
60975+ atomic_read_unchecked(&fscache_n_object_avail),
60976+ atomic_read_unchecked(&fscache_n_object_dead));
60977 seq_printf(m, "ChkAux : non=%u ok=%u upd=%u obs=%u\n",
60978- atomic_read(&fscache_n_checkaux_none),
60979- atomic_read(&fscache_n_checkaux_okay),
60980- atomic_read(&fscache_n_checkaux_update),
60981- atomic_read(&fscache_n_checkaux_obsolete));
60982+ atomic_read_unchecked(&fscache_n_checkaux_none),
60983+ atomic_read_unchecked(&fscache_n_checkaux_okay),
60984+ atomic_read_unchecked(&fscache_n_checkaux_update),
60985+ atomic_read_unchecked(&fscache_n_checkaux_obsolete));
60986
60987 seq_printf(m, "Pages : mrk=%u unc=%u\n",
60988- atomic_read(&fscache_n_marks),
60989- atomic_read(&fscache_n_uncaches));
60990+ atomic_read_unchecked(&fscache_n_marks),
60991+ atomic_read_unchecked(&fscache_n_uncaches));
60992
60993 seq_printf(m, "Acquire: n=%u nul=%u noc=%u ok=%u nbf=%u"
60994 " oom=%u\n",
60995- atomic_read(&fscache_n_acquires),
60996- atomic_read(&fscache_n_acquires_null),
60997- atomic_read(&fscache_n_acquires_no_cache),
60998- atomic_read(&fscache_n_acquires_ok),
60999- atomic_read(&fscache_n_acquires_nobufs),
61000- atomic_read(&fscache_n_acquires_oom));
61001+ atomic_read_unchecked(&fscache_n_acquires),
61002+ atomic_read_unchecked(&fscache_n_acquires_null),
61003+ atomic_read_unchecked(&fscache_n_acquires_no_cache),
61004+ atomic_read_unchecked(&fscache_n_acquires_ok),
61005+ atomic_read_unchecked(&fscache_n_acquires_nobufs),
61006+ atomic_read_unchecked(&fscache_n_acquires_oom));
61007
61008 seq_printf(m, "Lookups: n=%u neg=%u pos=%u crt=%u tmo=%u\n",
61009- atomic_read(&fscache_n_object_lookups),
61010- atomic_read(&fscache_n_object_lookups_negative),
61011- atomic_read(&fscache_n_object_lookups_positive),
61012- atomic_read(&fscache_n_object_created),
61013- atomic_read(&fscache_n_object_lookups_timed_out));
61014+ atomic_read_unchecked(&fscache_n_object_lookups),
61015+ atomic_read_unchecked(&fscache_n_object_lookups_negative),
61016+ atomic_read_unchecked(&fscache_n_object_lookups_positive),
61017+ atomic_read_unchecked(&fscache_n_object_created),
61018+ atomic_read_unchecked(&fscache_n_object_lookups_timed_out));
61019
61020 seq_printf(m, "Invals : n=%u run=%u\n",
61021- atomic_read(&fscache_n_invalidates),
61022- atomic_read(&fscache_n_invalidates_run));
61023+ atomic_read_unchecked(&fscache_n_invalidates),
61024+ atomic_read_unchecked(&fscache_n_invalidates_run));
61025
61026 seq_printf(m, "Updates: n=%u nul=%u run=%u\n",
61027- atomic_read(&fscache_n_updates),
61028- atomic_read(&fscache_n_updates_null),
61029- atomic_read(&fscache_n_updates_run));
61030+ atomic_read_unchecked(&fscache_n_updates),
61031+ atomic_read_unchecked(&fscache_n_updates_null),
61032+ atomic_read_unchecked(&fscache_n_updates_run));
61033
61034 seq_printf(m, "Relinqs: n=%u nul=%u wcr=%u rtr=%u\n",
61035- atomic_read(&fscache_n_relinquishes),
61036- atomic_read(&fscache_n_relinquishes_null),
61037- atomic_read(&fscache_n_relinquishes_waitcrt),
61038- atomic_read(&fscache_n_relinquishes_retire));
61039+ atomic_read_unchecked(&fscache_n_relinquishes),
61040+ atomic_read_unchecked(&fscache_n_relinquishes_null),
61041+ atomic_read_unchecked(&fscache_n_relinquishes_waitcrt),
61042+ atomic_read_unchecked(&fscache_n_relinquishes_retire));
61043
61044 seq_printf(m, "AttrChg: n=%u ok=%u nbf=%u oom=%u run=%u\n",
61045- atomic_read(&fscache_n_attr_changed),
61046- atomic_read(&fscache_n_attr_changed_ok),
61047- atomic_read(&fscache_n_attr_changed_nobufs),
61048- atomic_read(&fscache_n_attr_changed_nomem),
61049- atomic_read(&fscache_n_attr_changed_calls));
61050+ atomic_read_unchecked(&fscache_n_attr_changed),
61051+ atomic_read_unchecked(&fscache_n_attr_changed_ok),
61052+ atomic_read_unchecked(&fscache_n_attr_changed_nobufs),
61053+ atomic_read_unchecked(&fscache_n_attr_changed_nomem),
61054+ atomic_read_unchecked(&fscache_n_attr_changed_calls));
61055
61056 seq_printf(m, "Allocs : n=%u ok=%u wt=%u nbf=%u int=%u\n",
61057- atomic_read(&fscache_n_allocs),
61058- atomic_read(&fscache_n_allocs_ok),
61059- atomic_read(&fscache_n_allocs_wait),
61060- atomic_read(&fscache_n_allocs_nobufs),
61061- atomic_read(&fscache_n_allocs_intr));
61062+ atomic_read_unchecked(&fscache_n_allocs),
61063+ atomic_read_unchecked(&fscache_n_allocs_ok),
61064+ atomic_read_unchecked(&fscache_n_allocs_wait),
61065+ atomic_read_unchecked(&fscache_n_allocs_nobufs),
61066+ atomic_read_unchecked(&fscache_n_allocs_intr));
61067 seq_printf(m, "Allocs : ops=%u owt=%u abt=%u\n",
61068- atomic_read(&fscache_n_alloc_ops),
61069- atomic_read(&fscache_n_alloc_op_waits),
61070- atomic_read(&fscache_n_allocs_object_dead));
61071+ atomic_read_unchecked(&fscache_n_alloc_ops),
61072+ atomic_read_unchecked(&fscache_n_alloc_op_waits),
61073+ atomic_read_unchecked(&fscache_n_allocs_object_dead));
61074
61075 seq_printf(m, "Retrvls: n=%u ok=%u wt=%u nod=%u nbf=%u"
61076 " int=%u oom=%u\n",
61077- atomic_read(&fscache_n_retrievals),
61078- atomic_read(&fscache_n_retrievals_ok),
61079- atomic_read(&fscache_n_retrievals_wait),
61080- atomic_read(&fscache_n_retrievals_nodata),
61081- atomic_read(&fscache_n_retrievals_nobufs),
61082- atomic_read(&fscache_n_retrievals_intr),
61083- atomic_read(&fscache_n_retrievals_nomem));
61084+ atomic_read_unchecked(&fscache_n_retrievals),
61085+ atomic_read_unchecked(&fscache_n_retrievals_ok),
61086+ atomic_read_unchecked(&fscache_n_retrievals_wait),
61087+ atomic_read_unchecked(&fscache_n_retrievals_nodata),
61088+ atomic_read_unchecked(&fscache_n_retrievals_nobufs),
61089+ atomic_read_unchecked(&fscache_n_retrievals_intr),
61090+ atomic_read_unchecked(&fscache_n_retrievals_nomem));
61091 seq_printf(m, "Retrvls: ops=%u owt=%u abt=%u\n",
61092- atomic_read(&fscache_n_retrieval_ops),
61093- atomic_read(&fscache_n_retrieval_op_waits),
61094- atomic_read(&fscache_n_retrievals_object_dead));
61095+ atomic_read_unchecked(&fscache_n_retrieval_ops),
61096+ atomic_read_unchecked(&fscache_n_retrieval_op_waits),
61097+ atomic_read_unchecked(&fscache_n_retrievals_object_dead));
61098
61099 seq_printf(m, "Stores : n=%u ok=%u agn=%u nbf=%u oom=%u\n",
61100- atomic_read(&fscache_n_stores),
61101- atomic_read(&fscache_n_stores_ok),
61102- atomic_read(&fscache_n_stores_again),
61103- atomic_read(&fscache_n_stores_nobufs),
61104- atomic_read(&fscache_n_stores_oom));
61105+ atomic_read_unchecked(&fscache_n_stores),
61106+ atomic_read_unchecked(&fscache_n_stores_ok),
61107+ atomic_read_unchecked(&fscache_n_stores_again),
61108+ atomic_read_unchecked(&fscache_n_stores_nobufs),
61109+ atomic_read_unchecked(&fscache_n_stores_oom));
61110 seq_printf(m, "Stores : ops=%u run=%u pgs=%u rxd=%u olm=%u\n",
61111- atomic_read(&fscache_n_store_ops),
61112- atomic_read(&fscache_n_store_calls),
61113- atomic_read(&fscache_n_store_pages),
61114- atomic_read(&fscache_n_store_radix_deletes),
61115- atomic_read(&fscache_n_store_pages_over_limit));
61116+ atomic_read_unchecked(&fscache_n_store_ops),
61117+ atomic_read_unchecked(&fscache_n_store_calls),
61118+ atomic_read_unchecked(&fscache_n_store_pages),
61119+ atomic_read_unchecked(&fscache_n_store_radix_deletes),
61120+ atomic_read_unchecked(&fscache_n_store_pages_over_limit));
61121
61122 seq_printf(m, "VmScan : nos=%u gon=%u bsy=%u can=%u wt=%u\n",
61123- atomic_read(&fscache_n_store_vmscan_not_storing),
61124- atomic_read(&fscache_n_store_vmscan_gone),
61125- atomic_read(&fscache_n_store_vmscan_busy),
61126- atomic_read(&fscache_n_store_vmscan_cancelled),
61127- atomic_read(&fscache_n_store_vmscan_wait));
61128+ atomic_read_unchecked(&fscache_n_store_vmscan_not_storing),
61129+ atomic_read_unchecked(&fscache_n_store_vmscan_gone),
61130+ atomic_read_unchecked(&fscache_n_store_vmscan_busy),
61131+ atomic_read_unchecked(&fscache_n_store_vmscan_cancelled),
61132+ atomic_read_unchecked(&fscache_n_store_vmscan_wait));
61133
61134 seq_printf(m, "Ops : pend=%u run=%u enq=%u can=%u rej=%u\n",
61135- atomic_read(&fscache_n_op_pend),
61136- atomic_read(&fscache_n_op_run),
61137- atomic_read(&fscache_n_op_enqueue),
61138- atomic_read(&fscache_n_op_cancelled),
61139- atomic_read(&fscache_n_op_rejected));
61140+ atomic_read_unchecked(&fscache_n_op_pend),
61141+ atomic_read_unchecked(&fscache_n_op_run),
61142+ atomic_read_unchecked(&fscache_n_op_enqueue),
61143+ atomic_read_unchecked(&fscache_n_op_cancelled),
61144+ atomic_read_unchecked(&fscache_n_op_rejected));
61145 seq_printf(m, "Ops : dfr=%u rel=%u gc=%u\n",
61146- atomic_read(&fscache_n_op_deferred_release),
61147- atomic_read(&fscache_n_op_release),
61148- atomic_read(&fscache_n_op_gc));
61149+ atomic_read_unchecked(&fscache_n_op_deferred_release),
61150+ atomic_read_unchecked(&fscache_n_op_release),
61151+ atomic_read_unchecked(&fscache_n_op_gc));
61152
61153 seq_printf(m, "CacheOp: alo=%d luo=%d luc=%d gro=%d\n",
61154 atomic_read(&fscache_n_cop_alloc_object),
61155diff --git a/fs/fuse/cuse.c b/fs/fuse/cuse.c
61156index 13b691a..1ffca5ae 100644
61157--- a/fs/fuse/cuse.c
61158+++ b/fs/fuse/cuse.c
61159@@ -607,10 +607,12 @@ static int __init cuse_init(void)
61160 INIT_LIST_HEAD(&cuse_conntbl[i]);
61161
61162 /* inherit and extend fuse_dev_operations */
61163- cuse_channel_fops = fuse_dev_operations;
61164- cuse_channel_fops.owner = THIS_MODULE;
61165- cuse_channel_fops.open = cuse_channel_open;
61166- cuse_channel_fops.release = cuse_channel_release;
61167+ pax_open_kernel();
61168+ memcpy((void *)&cuse_channel_fops, &fuse_dev_operations, sizeof(fuse_dev_operations));
61169+ *(void **)&cuse_channel_fops.owner = THIS_MODULE;
61170+ *(void **)&cuse_channel_fops.open = cuse_channel_open;
61171+ *(void **)&cuse_channel_fops.release = cuse_channel_release;
61172+ pax_close_kernel();
61173
61174 cuse_class = class_create(THIS_MODULE, "cuse");
61175 if (IS_ERR(cuse_class))
61176diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
61177index aac71ce..fcd6a1b 100644
61178--- a/fs/fuse/dev.c
61179+++ b/fs/fuse/dev.c
61180@@ -1323,7 +1323,7 @@ static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos,
61181 ret = 0;
61182 pipe_lock(pipe);
61183
61184- if (!pipe->readers) {
61185+ if (!atomic_read(&pipe->readers)) {
61186 send_sig(SIGPIPE, current, 0);
61187 if (!ret)
61188 ret = -EPIPE;
61189@@ -1352,7 +1352,7 @@ static ssize_t fuse_dev_splice_read(struct file *in, loff_t *ppos,
61190 page_nr++;
61191 ret += buf->len;
61192
61193- if (pipe->files)
61194+ if (atomic_read(&pipe->files))
61195 do_wakeup = 1;
61196 }
61197
61198diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
61199index 4219835..3473b7e 100644
61200--- a/fs/fuse/dir.c
61201+++ b/fs/fuse/dir.c
61202@@ -1478,7 +1478,7 @@ static char *read_link(struct dentry *dentry)
61203 return link;
61204 }
61205
61206-static void free_link(char *link)
61207+static void free_link(const char *link)
61208 {
61209 if (!IS_ERR(link))
61210 free_page((unsigned long) link);
61211diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
61212index 9c470fd..aae410e 100644
61213--- a/fs/hostfs/hostfs_kern.c
61214+++ b/fs/hostfs/hostfs_kern.c
61215@@ -898,7 +898,7 @@ static void *hostfs_follow_link(struct dentry *dentry, struct nameidata *nd)
61216
61217 static void hostfs_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
61218 {
61219- char *s = nd_get_link(nd);
61220+ const char *s = nd_get_link(nd);
61221 if (!IS_ERR(s))
61222 __putname(s);
61223 }
61224diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
61225index e19d4c0..8a357a9 100644
61226--- a/fs/hugetlbfs/inode.c
61227+++ b/fs/hugetlbfs/inode.c
61228@@ -152,6 +152,7 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
61229 struct mm_struct *mm = current->mm;
61230 struct vm_area_struct *vma;
61231 struct hstate *h = hstate_file(file);
61232+ unsigned long offset = gr_rand_threadstack_offset(mm, file, flags);
61233 struct vm_unmapped_area_info info;
61234
61235 if (len & ~huge_page_mask(h))
61236@@ -165,17 +166,26 @@ hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
61237 return addr;
61238 }
61239
61240+#ifdef CONFIG_PAX_RANDMMAP
61241+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
61242+#endif
61243+
61244 if (addr) {
61245 addr = ALIGN(addr, huge_page_size(h));
61246 vma = find_vma(mm, addr);
61247- if (TASK_SIZE - len >= addr &&
61248- (!vma || addr + len <= vma->vm_start))
61249+ if (TASK_SIZE - len >= addr && check_heap_stack_gap(vma, addr, len, offset))
61250 return addr;
61251 }
61252
61253 info.flags = 0;
61254 info.length = len;
61255 info.low_limit = TASK_UNMAPPED_BASE;
61256+
61257+#ifdef CONFIG_PAX_RANDMMAP
61258+ if (mm->pax_flags & MF_PAX_RANDMMAP)
61259+ info.low_limit += mm->delta_mmap;
61260+#endif
61261+
61262 info.high_limit = TASK_SIZE;
61263 info.align_mask = PAGE_MASK & ~huge_page_mask(h);
61264 info.align_offset = 0;
61265@@ -921,7 +931,7 @@ static struct file_system_type hugetlbfs_fs_type = {
61266 };
61267 MODULE_ALIAS_FS("hugetlbfs");
61268
61269-static struct vfsmount *hugetlbfs_vfsmount[HUGE_MAX_HSTATE];
61270+struct vfsmount *hugetlbfs_vfsmount[HUGE_MAX_HSTATE];
61271
61272 static int can_do_hugetlb_shm(void)
61273 {
61274diff --git a/fs/inode.c b/fs/inode.c
61275index d2fb2f2..a6444b0 100644
61276--- a/fs/inode.c
61277+++ b/fs/inode.c
61278@@ -839,16 +839,20 @@ unsigned int get_next_ino(void)
61279 unsigned int *p = &get_cpu_var(last_ino);
61280 unsigned int res = *p;
61281
61282+start:
61283+
61284 #ifdef CONFIG_SMP
61285 if (unlikely((res & (LAST_INO_BATCH-1)) == 0)) {
61286- static atomic_t shared_last_ino;
61287- int next = atomic_add_return(LAST_INO_BATCH, &shared_last_ino);
61288+ static atomic_unchecked_t shared_last_ino;
61289+ int next = atomic_add_return_unchecked(LAST_INO_BATCH, &shared_last_ino);
61290
61291 res = next - LAST_INO_BATCH;
61292 }
61293 #endif
61294
61295- *p = ++res;
61296+ if (unlikely(!++res))
61297+ goto start; /* never zero */
61298+ *p = res;
61299 put_cpu_var(last_ino);
61300 return res;
61301 }
61302diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
61303index 4a6cf28..d3a29d3 100644
61304--- a/fs/jffs2/erase.c
61305+++ b/fs/jffs2/erase.c
61306@@ -452,7 +452,8 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
61307 struct jffs2_unknown_node marker = {
61308 .magic = cpu_to_je16(JFFS2_MAGIC_BITMASK),
61309 .nodetype = cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER),
61310- .totlen = cpu_to_je32(c->cleanmarker_size)
61311+ .totlen = cpu_to_je32(c->cleanmarker_size),
61312+ .hdr_crc = cpu_to_je32(0)
61313 };
61314
61315 jffs2_prealloc_raw_node_refs(c, jeb, 1);
61316diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
61317index a6597d6..41b30ec 100644
61318--- a/fs/jffs2/wbuf.c
61319+++ b/fs/jffs2/wbuf.c
61320@@ -1023,7 +1023,8 @@ static const struct jffs2_unknown_node oob_cleanmarker =
61321 {
61322 .magic = constant_cpu_to_je16(JFFS2_MAGIC_BITMASK),
61323 .nodetype = constant_cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER),
61324- .totlen = constant_cpu_to_je32(8)
61325+ .totlen = constant_cpu_to_je32(8),
61326+ .hdr_crc = constant_cpu_to_je32(0)
61327 };
61328
61329 /*
61330diff --git a/fs/jfs/super.c b/fs/jfs/super.c
61331index 97f7fda..09bd33d 100644
61332--- a/fs/jfs/super.c
61333+++ b/fs/jfs/super.c
61334@@ -885,7 +885,7 @@ static int __init init_jfs_fs(void)
61335
61336 jfs_inode_cachep =
61337 kmem_cache_create("jfs_ip", sizeof(struct jfs_inode_info), 0,
61338- SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD,
61339+ SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD|SLAB_USERCOPY,
61340 init_once);
61341 if (jfs_inode_cachep == NULL)
61342 return -ENOMEM;
61343diff --git a/fs/kernfs/dir.c b/fs/kernfs/dir.c
61344index ac127cd..d8079db 100644
61345--- a/fs/kernfs/dir.c
61346+++ b/fs/kernfs/dir.c
61347@@ -182,7 +182,7 @@ struct kernfs_node *kernfs_get_parent(struct kernfs_node *kn)
61348 *
61349 * Returns 31 bit hash of ns + name (so it fits in an off_t )
61350 */
61351-static unsigned int kernfs_name_hash(const char *name, const void *ns)
61352+static unsigned int kernfs_name_hash(const unsigned char *name, const void *ns)
61353 {
61354 unsigned long hash = init_name_hash();
61355 unsigned int len = strlen(name);
61356diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
61357index 5e9a80c..3853a24 100644
61358--- a/fs/kernfs/file.c
61359+++ b/fs/kernfs/file.c
61360@@ -33,7 +33,7 @@ static DEFINE_MUTEX(kernfs_open_file_mutex);
61361
61362 struct kernfs_open_node {
61363 atomic_t refcnt;
61364- atomic_t event;
61365+ atomic_unchecked_t event;
61366 wait_queue_head_t poll;
61367 struct list_head files; /* goes through kernfs_open_file.list */
61368 };
61369@@ -149,7 +149,7 @@ static int kernfs_seq_show(struct seq_file *sf, void *v)
61370 {
61371 struct kernfs_open_file *of = sf->private;
61372
61373- of->event = atomic_read(&of->kn->attr.open->event);
61374+ of->event = atomic_read_unchecked(&of->kn->attr.open->event);
61375
61376 return of->kn->attr.ops->seq_show(sf, v);
61377 }
61378@@ -361,12 +361,12 @@ static int kernfs_vma_page_mkwrite(struct vm_area_struct *vma,
61379 return ret;
61380 }
61381
61382-static int kernfs_vma_access(struct vm_area_struct *vma, unsigned long addr,
61383- void *buf, int len, int write)
61384+static ssize_t kernfs_vma_access(struct vm_area_struct *vma, unsigned long addr,
61385+ void *buf, size_t len, int write)
61386 {
61387 struct file *file = vma->vm_file;
61388 struct kernfs_open_file *of = kernfs_of(file);
61389- int ret;
61390+ ssize_t ret;
61391
61392 if (!of->vm_ops)
61393 return -EINVAL;
61394@@ -567,7 +567,7 @@ static int kernfs_get_open_node(struct kernfs_node *kn,
61395 return -ENOMEM;
61396
61397 atomic_set(&new_on->refcnt, 0);
61398- atomic_set(&new_on->event, 1);
61399+ atomic_set_unchecked(&new_on->event, 1);
61400 init_waitqueue_head(&new_on->poll);
61401 INIT_LIST_HEAD(&new_on->files);
61402 goto retry;
61403@@ -773,7 +773,7 @@ static unsigned int kernfs_fop_poll(struct file *filp, poll_table *wait)
61404
61405 kernfs_put_active(kn);
61406
61407- if (of->event != atomic_read(&on->event))
61408+ if (of->event != atomic_read_unchecked(&on->event))
61409 goto trigger;
61410
61411 return DEFAULT_POLLMASK;
61412@@ -798,7 +798,7 @@ void kernfs_notify(struct kernfs_node *kn)
61413 if (!WARN_ON(kernfs_type(kn) != KERNFS_FILE)) {
61414 on = kn->attr.open;
61415 if (on) {
61416- atomic_inc(&on->event);
61417+ atomic_inc_unchecked(&on->event);
61418 wake_up_interruptible(&on->poll);
61419 }
61420 }
61421diff --git a/fs/kernfs/symlink.c b/fs/kernfs/symlink.c
61422index 8a19889..4c3069a 100644
61423--- a/fs/kernfs/symlink.c
61424+++ b/fs/kernfs/symlink.c
61425@@ -128,7 +128,7 @@ static void *kernfs_iop_follow_link(struct dentry *dentry, struct nameidata *nd)
61426 static void kernfs_iop_put_link(struct dentry *dentry, struct nameidata *nd,
61427 void *cookie)
61428 {
61429- char *page = nd_get_link(nd);
61430+ const char *page = nd_get_link(nd);
61431 if (!IS_ERR(page))
61432 free_page((unsigned long)page);
61433 }
61434diff --git a/fs/libfs.c b/fs/libfs.c
61435index a184424..944ddce 100644
61436--- a/fs/libfs.c
61437+++ b/fs/libfs.c
61438@@ -159,6 +159,9 @@ int dcache_readdir(struct file *file, struct dir_context *ctx)
61439
61440 for (p = q->next; p != &dentry->d_subdirs; p = p->next) {
61441 struct dentry *next = list_entry(p, struct dentry, d_u.d_child);
61442+ char d_name[sizeof(next->d_iname)];
61443+ const unsigned char *name;
61444+
61445 spin_lock_nested(&next->d_lock, DENTRY_D_LOCK_NESTED);
61446 if (!simple_positive(next)) {
61447 spin_unlock(&next->d_lock);
61448@@ -167,7 +170,12 @@ int dcache_readdir(struct file *file, struct dir_context *ctx)
61449
61450 spin_unlock(&next->d_lock);
61451 spin_unlock(&dentry->d_lock);
61452- if (!dir_emit(ctx, next->d_name.name, next->d_name.len,
61453+ name = next->d_name.name;
61454+ if (name == next->d_iname) {
61455+ memcpy(d_name, name, next->d_name.len);
61456+ name = d_name;
61457+ }
61458+ if (!dir_emit(ctx, name, next->d_name.len,
61459 next->d_inode->i_ino, dt_type(next->d_inode)))
61460 return 0;
61461 spin_lock(&dentry->d_lock);
61462@@ -999,7 +1007,7 @@ EXPORT_SYMBOL(noop_fsync);
61463 void kfree_put_link(struct dentry *dentry, struct nameidata *nd,
61464 void *cookie)
61465 {
61466- char *s = nd_get_link(nd);
61467+ const char *s = nd_get_link(nd);
61468 if (!IS_ERR(s))
61469 kfree(s);
61470 }
61471diff --git a/fs/lockd/clntproc.c b/fs/lockd/clntproc.c
61472index acd3947..1f896e2 100644
61473--- a/fs/lockd/clntproc.c
61474+++ b/fs/lockd/clntproc.c
61475@@ -36,11 +36,11 @@ static const struct rpc_call_ops nlmclnt_cancel_ops;
61476 /*
61477 * Cookie counter for NLM requests
61478 */
61479-static atomic_t nlm_cookie = ATOMIC_INIT(0x1234);
61480+static atomic_unchecked_t nlm_cookie = ATOMIC_INIT(0x1234);
61481
61482 void nlmclnt_next_cookie(struct nlm_cookie *c)
61483 {
61484- u32 cookie = atomic_inc_return(&nlm_cookie);
61485+ u32 cookie = atomic_inc_return_unchecked(&nlm_cookie);
61486
61487 memcpy(c->data, &cookie, 4);
61488 c->len=4;
61489diff --git a/fs/locks.c b/fs/locks.c
61490index e390bd9..c79870e 100644
61491--- a/fs/locks.c
61492+++ b/fs/locks.c
61493@@ -2315,16 +2315,16 @@ void locks_remove_file(struct file *filp)
61494 locks_remove_posix(filp, (fl_owner_t)filp);
61495
61496 if (filp->f_op->flock) {
61497- struct file_lock fl = {
61498+ struct file_lock flock = {
61499 .fl_pid = current->tgid,
61500 .fl_file = filp,
61501 .fl_flags = FL_FLOCK,
61502 .fl_type = F_UNLCK,
61503 .fl_end = OFFSET_MAX,
61504 };
61505- filp->f_op->flock(filp, F_SETLKW, &fl);
61506- if (fl.fl_ops && fl.fl_ops->fl_release_private)
61507- fl.fl_ops->fl_release_private(&fl);
61508+ filp->f_op->flock(filp, F_SETLKW, &flock);
61509+ if (flock.fl_ops && flock.fl_ops->fl_release_private)
61510+ flock.fl_ops->fl_release_private(&flock);
61511 }
61512
61513 spin_lock(&inode->i_lock);
61514diff --git a/fs/mount.h b/fs/mount.h
61515index d55297f..f5b28c5 100644
61516--- a/fs/mount.h
61517+++ b/fs/mount.h
61518@@ -11,7 +11,7 @@ struct mnt_namespace {
61519 u64 seq; /* Sequence number to prevent loops */
61520 wait_queue_head_t poll;
61521 u64 event;
61522-};
61523+} __randomize_layout;
61524
61525 struct mnt_pcp {
61526 int mnt_count;
61527@@ -57,7 +57,7 @@ struct mount {
61528 int mnt_expiry_mark; /* true if marked for expiry */
61529 int mnt_pinned;
61530 struct path mnt_ex_mountpoint;
61531-};
61532+} __randomize_layout;
61533
61534 #define MNT_NS_INTERNAL ERR_PTR(-EINVAL) /* distinct from any mnt_namespace */
61535
61536diff --git a/fs/namei.c b/fs/namei.c
61537index 985c6f3..f67a0f8 100644
61538--- a/fs/namei.c
61539+++ b/fs/namei.c
61540@@ -330,17 +330,32 @@ int generic_permission(struct inode *inode, int mask)
61541 if (ret != -EACCES)
61542 return ret;
61543
61544+#ifdef CONFIG_GRKERNSEC
61545+ /* we'll block if we have to log due to a denied capability use */
61546+ if (mask & MAY_NOT_BLOCK)
61547+ return -ECHILD;
61548+#endif
61549+
61550 if (S_ISDIR(inode->i_mode)) {
61551 /* DACs are overridable for directories */
61552- if (capable_wrt_inode_uidgid(inode, CAP_DAC_OVERRIDE))
61553- return 0;
61554 if (!(mask & MAY_WRITE))
61555- if (capable_wrt_inode_uidgid(inode,
61556- CAP_DAC_READ_SEARCH))
61557+ if (capable_wrt_inode_uidgid_nolog(inode, CAP_DAC_OVERRIDE) ||
61558+ capable_wrt_inode_uidgid(inode, CAP_DAC_READ_SEARCH))
61559 return 0;
61560+ if (capable_wrt_inode_uidgid(inode, CAP_DAC_OVERRIDE))
61561+ return 0;
61562 return -EACCES;
61563 }
61564 /*
61565+ * Searching includes executable on directories, else just read.
61566+ */
61567+ mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
61568+ if (mask == MAY_READ)
61569+ if (capable_wrt_inode_uidgid_nolog(inode, CAP_DAC_OVERRIDE) ||
61570+ capable_wrt_inode_uidgid(inode, CAP_DAC_READ_SEARCH))
61571+ return 0;
61572+
61573+ /*
61574 * Read/write DACs are always overridable.
61575 * Executable DACs are overridable when there is
61576 * at least one exec bit set.
61577@@ -349,14 +364,6 @@ int generic_permission(struct inode *inode, int mask)
61578 if (capable_wrt_inode_uidgid(inode, CAP_DAC_OVERRIDE))
61579 return 0;
61580
61581- /*
61582- * Searching includes executable on directories, else just read.
61583- */
61584- mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
61585- if (mask == MAY_READ)
61586- if (capable_wrt_inode_uidgid(inode, CAP_DAC_READ_SEARCH))
61587- return 0;
61588-
61589 return -EACCES;
61590 }
61591 EXPORT_SYMBOL(generic_permission);
61592@@ -824,7 +831,7 @@ follow_link(struct path *link, struct nameidata *nd, void **p)
61593 {
61594 struct dentry *dentry = link->dentry;
61595 int error;
61596- char *s;
61597+ const char *s;
61598
61599 BUG_ON(nd->flags & LOOKUP_RCU);
61600
61601@@ -845,6 +852,12 @@ follow_link(struct path *link, struct nameidata *nd, void **p)
61602 if (error)
61603 goto out_put_nd_path;
61604
61605+ if (gr_handle_follow_link(dentry->d_parent->d_inode,
61606+ dentry->d_inode, dentry, nd->path.mnt)) {
61607+ error = -EACCES;
61608+ goto out_put_nd_path;
61609+ }
61610+
61611 nd->last_type = LAST_BIND;
61612 *p = dentry->d_inode->i_op->follow_link(dentry, nd);
61613 error = PTR_ERR(*p);
61614@@ -1596,6 +1609,8 @@ static inline int nested_symlink(struct path *path, struct nameidata *nd)
61615 if (res)
61616 break;
61617 res = walk_component(nd, path, LOOKUP_FOLLOW);
61618+ if (res >= 0 && gr_handle_symlink_owner(&link, nd->inode))
61619+ res = -EACCES;
61620 put_link(nd, &link, cookie);
61621 } while (res > 0);
61622
61623@@ -1669,7 +1684,7 @@ EXPORT_SYMBOL(full_name_hash);
61624 static inline unsigned long hash_name(const char *name, unsigned int *hashp)
61625 {
61626 unsigned long a, b, adata, bdata, mask, hash, len;
61627- const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
61628+ static const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
61629
61630 hash = a = 0;
61631 len = -sizeof(unsigned long);
61632@@ -1953,6 +1968,8 @@ static int path_lookupat(int dfd, const char *name,
61633 if (err)
61634 break;
61635 err = lookup_last(nd, &path);
61636+ if (!err && gr_handle_symlink_owner(&link, nd->inode))
61637+ err = -EACCES;
61638 put_link(nd, &link, cookie);
61639 }
61640 }
61641@@ -1960,6 +1977,13 @@ static int path_lookupat(int dfd, const char *name,
61642 if (!err)
61643 err = complete_walk(nd);
61644
61645+ if (!err && !(nd->flags & LOOKUP_PARENT)) {
61646+ if (!gr_acl_handle_hidden_file(nd->path.dentry, nd->path.mnt)) {
61647+ path_put(&nd->path);
61648+ err = -ENOENT;
61649+ }
61650+ }
61651+
61652 if (!err && nd->flags & LOOKUP_DIRECTORY) {
61653 if (!d_can_lookup(nd->path.dentry)) {
61654 path_put(&nd->path);
61655@@ -1987,8 +2011,15 @@ static int filename_lookup(int dfd, struct filename *name,
61656 retval = path_lookupat(dfd, name->name,
61657 flags | LOOKUP_REVAL, nd);
61658
61659- if (likely(!retval))
61660+ if (likely(!retval)) {
61661 audit_inode(name, nd->path.dentry, flags & LOOKUP_PARENT);
61662+ if (name->name[0] != '/' && nd->path.dentry && nd->inode) {
61663+ if (!gr_chroot_fchdir(nd->path.dentry, nd->path.mnt)) {
61664+ path_put(&nd->path);
61665+ return -ENOENT;
61666+ }
61667+ }
61668+ }
61669 return retval;
61670 }
61671
61672@@ -2569,6 +2600,13 @@ static int may_open(struct path *path, int acc_mode, int flag)
61673 if (flag & O_NOATIME && !inode_owner_or_capable(inode))
61674 return -EPERM;
61675
61676+ if (gr_handle_rofs_blockwrite(dentry, path->mnt, acc_mode))
61677+ return -EPERM;
61678+ if (gr_handle_rawio(inode))
61679+ return -EPERM;
61680+ if (!gr_acl_handle_open(dentry, path->mnt, acc_mode))
61681+ return -EACCES;
61682+
61683 return 0;
61684 }
61685
61686@@ -2800,7 +2838,7 @@ looked_up:
61687 * cleared otherwise prior to returning.
61688 */
61689 static int lookup_open(struct nameidata *nd, struct path *path,
61690- struct file *file,
61691+ struct path *link, struct file *file,
61692 const struct open_flags *op,
61693 bool got_write, int *opened)
61694 {
61695@@ -2835,6 +2873,17 @@ static int lookup_open(struct nameidata *nd, struct path *path,
61696 /* Negative dentry, just create the file */
61697 if (!dentry->d_inode && (op->open_flag & O_CREAT)) {
61698 umode_t mode = op->mode;
61699+
61700+ if (link && gr_handle_symlink_owner(link, dir->d_inode)) {
61701+ error = -EACCES;
61702+ goto out_dput;
61703+ }
61704+
61705+ if (!gr_acl_handle_creat(dentry, dir, nd->path.mnt, op->open_flag, op->acc_mode, mode)) {
61706+ error = -EACCES;
61707+ goto out_dput;
61708+ }
61709+
61710 if (!IS_POSIXACL(dir->d_inode))
61711 mode &= ~current_umask();
61712 /*
61713@@ -2856,6 +2905,8 @@ static int lookup_open(struct nameidata *nd, struct path *path,
61714 nd->flags & LOOKUP_EXCL);
61715 if (error)
61716 goto out_dput;
61717+ else
61718+ gr_handle_create(dentry, nd->path.mnt);
61719 }
61720 out_no_open:
61721 path->dentry = dentry;
61722@@ -2870,7 +2921,7 @@ out_dput:
61723 /*
61724 * Handle the last step of open()
61725 */
61726-static int do_last(struct nameidata *nd, struct path *path,
61727+static int do_last(struct nameidata *nd, struct path *path, struct path *link,
61728 struct file *file, const struct open_flags *op,
61729 int *opened, struct filename *name)
61730 {
61731@@ -2920,6 +2971,15 @@ static int do_last(struct nameidata *nd, struct path *path,
61732 if (error)
61733 return error;
61734
61735+ if (!gr_acl_handle_hidden_file(dir, nd->path.mnt)) {
61736+ error = -ENOENT;
61737+ goto out;
61738+ }
61739+ if (link && gr_handle_symlink_owner(link, nd->inode)) {
61740+ error = -EACCES;
61741+ goto out;
61742+ }
61743+
61744 audit_inode(name, dir, LOOKUP_PARENT);
61745 error = -EISDIR;
61746 /* trailing slashes? */
61747@@ -2939,7 +2999,7 @@ retry_lookup:
61748 */
61749 }
61750 mutex_lock(&dir->d_inode->i_mutex);
61751- error = lookup_open(nd, path, file, op, got_write, opened);
61752+ error = lookup_open(nd, path, link, file, op, got_write, opened);
61753 mutex_unlock(&dir->d_inode->i_mutex);
61754
61755 if (error <= 0) {
61756@@ -2963,11 +3023,28 @@ retry_lookup:
61757 goto finish_open_created;
61758 }
61759
61760+ if (!gr_acl_handle_hidden_file(path->dentry, nd->path.mnt)) {
61761+ error = -ENOENT;
61762+ goto exit_dput;
61763+ }
61764+ if (link && gr_handle_symlink_owner(link, path->dentry->d_inode)) {
61765+ error = -EACCES;
61766+ goto exit_dput;
61767+ }
61768+
61769 /*
61770 * create/update audit record if it already exists.
61771 */
61772- if (d_is_positive(path->dentry))
61773+ if (d_is_positive(path->dentry)) {
61774+ /* only check if O_CREAT is specified, all other checks need to go
61775+ into may_open */
61776+ if (gr_handle_fifo(path->dentry, path->mnt, dir, open_flag, acc_mode)) {
61777+ error = -EACCES;
61778+ goto exit_dput;
61779+ }
61780+
61781 audit_inode(name, path->dentry, 0);
61782+ }
61783
61784 /*
61785 * If atomic_open() acquired write access it is dropped now due to
61786@@ -3008,6 +3085,11 @@ finish_lookup:
61787 }
61788 }
61789 BUG_ON(inode != path->dentry->d_inode);
61790+ /* if we're resolving a symlink to another symlink */
61791+ if (link && gr_handle_symlink_owner(link, inode)) {
61792+ error = -EACCES;
61793+ goto out;
61794+ }
61795 return 1;
61796 }
61797
61798@@ -3017,7 +3099,6 @@ finish_lookup:
61799 save_parent.dentry = nd->path.dentry;
61800 save_parent.mnt = mntget(path->mnt);
61801 nd->path.dentry = path->dentry;
61802-
61803 }
61804 nd->inode = inode;
61805 /* Why this, you ask? _Now_ we might have grown LOOKUP_JUMPED... */
61806@@ -3027,7 +3108,18 @@ finish_open:
61807 path_put(&save_parent);
61808 return error;
61809 }
61810+
61811+ if (!gr_acl_handle_hidden_file(nd->path.dentry, nd->path.mnt)) {
61812+ error = -ENOENT;
61813+ goto out;
61814+ }
61815+ if (link && gr_handle_symlink_owner(link, nd->inode)) {
61816+ error = -EACCES;
61817+ goto out;
61818+ }
61819+
61820 audit_inode(name, nd->path.dentry, 0);
61821+
61822 error = -EISDIR;
61823 if ((open_flag & O_CREAT) && d_is_dir(nd->path.dentry))
61824 goto out;
61825@@ -3190,7 +3282,7 @@ static struct file *path_openat(int dfd, struct filename *pathname,
61826 if (unlikely(error))
61827 goto out;
61828
61829- error = do_last(nd, &path, file, op, &opened, pathname);
61830+ error = do_last(nd, &path, NULL, file, op, &opened, pathname);
61831 while (unlikely(error > 0)) { /* trailing symlink */
61832 struct path link = path;
61833 void *cookie;
61834@@ -3208,7 +3300,7 @@ static struct file *path_openat(int dfd, struct filename *pathname,
61835 error = follow_link(&link, nd, &cookie);
61836 if (unlikely(error))
61837 break;
61838- error = do_last(nd, &path, file, op, &opened, pathname);
61839+ error = do_last(nd, &path, &link, file, op, &opened, pathname);
61840 put_link(nd, &link, cookie);
61841 }
61842 out:
61843@@ -3308,9 +3400,11 @@ struct dentry *kern_path_create(int dfd, const char *pathname,
61844 goto unlock;
61845
61846 error = -EEXIST;
61847- if (d_is_positive(dentry))
61848+ if (d_is_positive(dentry)) {
61849+ if (!gr_acl_handle_hidden_file(dentry, nd.path.mnt))
61850+ error = -ENOENT;
61851 goto fail;
61852-
61853+ }
61854 /*
61855 * Special case - lookup gave negative, but... we had foo/bar/
61856 * From the vfs_mknod() POV we just have a negative dentry -
61857@@ -3362,6 +3456,20 @@ struct dentry *user_path_create(int dfd, const char __user *pathname,
61858 }
61859 EXPORT_SYMBOL(user_path_create);
61860
61861+static struct dentry *user_path_create_with_name(int dfd, const char __user *pathname, struct path *path, struct filename **to, unsigned int lookup_flags)
61862+{
61863+ struct filename *tmp = getname(pathname);
61864+ struct dentry *res;
61865+ if (IS_ERR(tmp))
61866+ return ERR_CAST(tmp);
61867+ res = kern_path_create(dfd, tmp->name, path, lookup_flags);
61868+ if (IS_ERR(res))
61869+ putname(tmp);
61870+ else
61871+ *to = tmp;
61872+ return res;
61873+}
61874+
61875 int vfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
61876 {
61877 int error = may_create(dir, dentry);
61878@@ -3425,6 +3533,17 @@ retry:
61879
61880 if (!IS_POSIXACL(path.dentry->d_inode))
61881 mode &= ~current_umask();
61882+
61883+ if (gr_handle_chroot_mknod(dentry, path.mnt, mode)) {
61884+ error = -EPERM;
61885+ goto out;
61886+ }
61887+
61888+ if (!gr_acl_handle_mknod(dentry, path.dentry, path.mnt, mode)) {
61889+ error = -EACCES;
61890+ goto out;
61891+ }
61892+
61893 error = security_path_mknod(&path, dentry, mode, dev);
61894 if (error)
61895 goto out;
61896@@ -3441,6 +3560,8 @@ retry:
61897 break;
61898 }
61899 out:
61900+ if (!error)
61901+ gr_handle_create(dentry, path.mnt);
61902 done_path_create(&path, dentry);
61903 if (retry_estale(error, lookup_flags)) {
61904 lookup_flags |= LOOKUP_REVAL;
61905@@ -3494,9 +3615,16 @@ retry:
61906
61907 if (!IS_POSIXACL(path.dentry->d_inode))
61908 mode &= ~current_umask();
61909+ if (!gr_acl_handle_mkdir(dentry, path.dentry, path.mnt)) {
61910+ error = -EACCES;
61911+ goto out;
61912+ }
61913 error = security_path_mkdir(&path, dentry, mode);
61914 if (!error)
61915 error = vfs_mkdir(path.dentry->d_inode, dentry, mode);
61916+ if (!error)
61917+ gr_handle_create(dentry, path.mnt);
61918+out:
61919 done_path_create(&path, dentry);
61920 if (retry_estale(error, lookup_flags)) {
61921 lookup_flags |= LOOKUP_REVAL;
61922@@ -3579,6 +3707,8 @@ static long do_rmdir(int dfd, const char __user *pathname)
61923 struct filename *name;
61924 struct dentry *dentry;
61925 struct nameidata nd;
61926+ ino_t saved_ino = 0;
61927+ dev_t saved_dev = 0;
61928 unsigned int lookup_flags = 0;
61929 retry:
61930 name = user_path_parent(dfd, pathname, &nd, lookup_flags);
61931@@ -3611,10 +3741,21 @@ retry:
61932 error = -ENOENT;
61933 goto exit3;
61934 }
61935+
61936+ saved_ino = dentry->d_inode->i_ino;
61937+ saved_dev = gr_get_dev_from_dentry(dentry);
61938+
61939+ if (!gr_acl_handle_rmdir(dentry, nd.path.mnt)) {
61940+ error = -EACCES;
61941+ goto exit3;
61942+ }
61943+
61944 error = security_path_rmdir(&nd.path, dentry);
61945 if (error)
61946 goto exit3;
61947 error = vfs_rmdir(nd.path.dentry->d_inode, dentry);
61948+ if (!error && (saved_dev || saved_ino))
61949+ gr_handle_delete(saved_ino, saved_dev);
61950 exit3:
61951 dput(dentry);
61952 exit2:
61953@@ -3705,6 +3846,8 @@ static long do_unlinkat(int dfd, const char __user *pathname)
61954 struct nameidata nd;
61955 struct inode *inode = NULL;
61956 struct inode *delegated_inode = NULL;
61957+ ino_t saved_ino = 0;
61958+ dev_t saved_dev = 0;
61959 unsigned int lookup_flags = 0;
61960 retry:
61961 name = user_path_parent(dfd, pathname, &nd, lookup_flags);
61962@@ -3731,10 +3874,22 @@ retry_deleg:
61963 if (d_is_negative(dentry))
61964 goto slashes;
61965 ihold(inode);
61966+
61967+ if (inode->i_nlink <= 1) {
61968+ saved_ino = inode->i_ino;
61969+ saved_dev = gr_get_dev_from_dentry(dentry);
61970+ }
61971+ if (!gr_acl_handle_unlink(dentry, nd.path.mnt)) {
61972+ error = -EACCES;
61973+ goto exit2;
61974+ }
61975+
61976 error = security_path_unlink(&nd.path, dentry);
61977 if (error)
61978 goto exit2;
61979 error = vfs_unlink(nd.path.dentry->d_inode, dentry, &delegated_inode);
61980+ if (!error && (saved_ino || saved_dev))
61981+ gr_handle_delete(saved_ino, saved_dev);
61982 exit2:
61983 dput(dentry);
61984 }
61985@@ -3823,9 +3978,17 @@ retry:
61986 if (IS_ERR(dentry))
61987 goto out_putname;
61988
61989+ if (!gr_acl_handle_symlink(dentry, path.dentry, path.mnt, from)) {
61990+ error = -EACCES;
61991+ goto out;
61992+ }
61993+
61994 error = security_path_symlink(&path, dentry, from->name);
61995 if (!error)
61996 error = vfs_symlink(path.dentry->d_inode, dentry, from->name);
61997+ if (!error)
61998+ gr_handle_create(dentry, path.mnt);
61999+out:
62000 done_path_create(&path, dentry);
62001 if (retry_estale(error, lookup_flags)) {
62002 lookup_flags |= LOOKUP_REVAL;
62003@@ -3929,6 +4092,7 @@ SYSCALL_DEFINE5(linkat, int, olddfd, const char __user *, oldname,
62004 struct dentry *new_dentry;
62005 struct path old_path, new_path;
62006 struct inode *delegated_inode = NULL;
62007+ struct filename *to = NULL;
62008 int how = 0;
62009 int error;
62010
62011@@ -3952,7 +4116,7 @@ retry:
62012 if (error)
62013 return error;
62014
62015- new_dentry = user_path_create(newdfd, newname, &new_path,
62016+ new_dentry = user_path_create_with_name(newdfd, newname, &new_path, &to,
62017 (how & LOOKUP_REVAL));
62018 error = PTR_ERR(new_dentry);
62019 if (IS_ERR(new_dentry))
62020@@ -3964,11 +4128,28 @@ retry:
62021 error = may_linkat(&old_path);
62022 if (unlikely(error))
62023 goto out_dput;
62024+
62025+ if (gr_handle_hardlink(old_path.dentry, old_path.mnt,
62026+ old_path.dentry->d_inode,
62027+ old_path.dentry->d_inode->i_mode, to)) {
62028+ error = -EACCES;
62029+ goto out_dput;
62030+ }
62031+
62032+ if (!gr_acl_handle_link(new_dentry, new_path.dentry, new_path.mnt,
62033+ old_path.dentry, old_path.mnt, to)) {
62034+ error = -EACCES;
62035+ goto out_dput;
62036+ }
62037+
62038 error = security_path_link(old_path.dentry, &new_path, new_dentry);
62039 if (error)
62040 goto out_dput;
62041 error = vfs_link(old_path.dentry, new_path.dentry->d_inode, new_dentry, &delegated_inode);
62042+ if (!error)
62043+ gr_handle_create(new_dentry, new_path.mnt);
62044 out_dput:
62045+ putname(to);
62046 done_path_create(&new_path, new_dentry);
62047 if (delegated_inode) {
62048 error = break_deleg_wait(&delegated_inode);
62049@@ -4278,6 +4459,12 @@ retry_deleg:
62050 if (new_dentry == trap)
62051 goto exit5;
62052
62053+ error = gr_acl_handle_rename(new_dentry, new_dir, newnd.path.mnt,
62054+ old_dentry, old_dir->d_inode, oldnd.path.mnt,
62055+ to, flags);
62056+ if (error)
62057+ goto exit5;
62058+
62059 error = security_path_rename(&oldnd.path, old_dentry,
62060 &newnd.path, new_dentry, flags);
62061 if (error)
62062@@ -4285,6 +4472,9 @@ retry_deleg:
62063 error = vfs_rename(old_dir->d_inode, old_dentry,
62064 new_dir->d_inode, new_dentry,
62065 &delegated_inode, flags);
62066+ if (!error)
62067+ gr_handle_rename(old_dir->d_inode, new_dir->d_inode, old_dentry,
62068+ new_dentry, oldnd.path.mnt, new_dentry->d_inode ? 1 : 0, flags);
62069 exit5:
62070 dput(new_dentry);
62071 exit4:
62072@@ -4327,14 +4517,24 @@ SYSCALL_DEFINE2(rename, const char __user *, oldname, const char __user *, newna
62073
62074 int readlink_copy(char __user *buffer, int buflen, const char *link)
62075 {
62076+ char tmpbuf[64];
62077+ const char *newlink;
62078 int len = PTR_ERR(link);
62079+
62080 if (IS_ERR(link))
62081 goto out;
62082
62083 len = strlen(link);
62084 if (len > (unsigned) buflen)
62085 len = buflen;
62086- if (copy_to_user(buffer, link, len))
62087+
62088+ if (len < sizeof(tmpbuf)) {
62089+ memcpy(tmpbuf, link, len);
62090+ newlink = tmpbuf;
62091+ } else
62092+ newlink = link;
62093+
62094+ if (copy_to_user(buffer, newlink, len))
62095 len = -EFAULT;
62096 out:
62097 return len;
62098diff --git a/fs/namespace.c b/fs/namespace.c
62099index 182bc41..72e3cf1 100644
62100--- a/fs/namespace.c
62101+++ b/fs/namespace.c
62102@@ -1348,6 +1348,9 @@ static int do_umount(struct mount *mnt, int flags)
62103 if (!(sb->s_flags & MS_RDONLY))
62104 retval = do_remount_sb(sb, MS_RDONLY, NULL, 0);
62105 up_write(&sb->s_umount);
62106+
62107+ gr_log_remount(mnt->mnt_devname, retval);
62108+
62109 return retval;
62110 }
62111
62112@@ -1370,6 +1373,9 @@ static int do_umount(struct mount *mnt, int flags)
62113 }
62114 unlock_mount_hash();
62115 namespace_unlock();
62116+
62117+ gr_log_unmount(mnt->mnt_devname, retval);
62118+
62119 return retval;
62120 }
62121
62122@@ -1389,7 +1395,7 @@ static inline bool may_mount(void)
62123 * unixes. Our API is identical to OSF/1 to avoid making a mess of AMD
62124 */
62125
62126-SYSCALL_DEFINE2(umount, char __user *, name, int, flags)
62127+SYSCALL_DEFINE2(umount, const char __user *, name, int, flags)
62128 {
62129 struct path path;
62130 struct mount *mnt;
62131@@ -1431,7 +1437,7 @@ out:
62132 /*
62133 * The 2.0 compatible umount. No flags.
62134 */
62135-SYSCALL_DEFINE1(oldumount, char __user *, name)
62136+SYSCALL_DEFINE1(oldumount, const char __user *, name)
62137 {
62138 return sys_umount(name, 0);
62139 }
62140@@ -2440,6 +2446,16 @@ long do_mount(const char *dev_name, const char *dir_name,
62141 MS_NOATIME | MS_NODIRATIME | MS_RELATIME| MS_KERNMOUNT |
62142 MS_STRICTATIME);
62143
62144+ if (gr_handle_rofs_mount(path.dentry, path.mnt, mnt_flags)) {
62145+ retval = -EPERM;
62146+ goto dput_out;
62147+ }
62148+
62149+ if (gr_handle_chroot_mount(path.dentry, path.mnt, dev_name)) {
62150+ retval = -EPERM;
62151+ goto dput_out;
62152+ }
62153+
62154 if (flags & MS_REMOUNT)
62155 retval = do_remount(&path, flags & ~MS_REMOUNT, mnt_flags,
62156 data_page);
62157@@ -2454,6 +2470,9 @@ long do_mount(const char *dev_name, const char *dir_name,
62158 dev_name, data_page);
62159 dput_out:
62160 path_put(&path);
62161+
62162+ gr_log_mount(dev_name, dir_name, retval);
62163+
62164 return retval;
62165 }
62166
62167@@ -2471,7 +2490,7 @@ static void free_mnt_ns(struct mnt_namespace *ns)
62168 * number incrementing at 10Ghz will take 12,427 years to wrap which
62169 * is effectively never, so we can ignore the possibility.
62170 */
62171-static atomic64_t mnt_ns_seq = ATOMIC64_INIT(1);
62172+static atomic64_unchecked_t mnt_ns_seq = ATOMIC64_INIT(1);
62173
62174 static struct mnt_namespace *alloc_mnt_ns(struct user_namespace *user_ns)
62175 {
62176@@ -2486,7 +2505,7 @@ static struct mnt_namespace *alloc_mnt_ns(struct user_namespace *user_ns)
62177 kfree(new_ns);
62178 return ERR_PTR(ret);
62179 }
62180- new_ns->seq = atomic64_add_return(1, &mnt_ns_seq);
62181+ new_ns->seq = atomic64_inc_return_unchecked(&mnt_ns_seq);
62182 atomic_set(&new_ns->count, 1);
62183 new_ns->root = NULL;
62184 INIT_LIST_HEAD(&new_ns->list);
62185@@ -2496,7 +2515,7 @@ static struct mnt_namespace *alloc_mnt_ns(struct user_namespace *user_ns)
62186 return new_ns;
62187 }
62188
62189-struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns,
62190+__latent_entropy struct mnt_namespace *copy_mnt_ns(unsigned long flags, struct mnt_namespace *ns,
62191 struct user_namespace *user_ns, struct fs_struct *new_fs)
62192 {
62193 struct mnt_namespace *new_ns;
62194@@ -2617,8 +2636,8 @@ struct dentry *mount_subtree(struct vfsmount *mnt, const char *name)
62195 }
62196 EXPORT_SYMBOL(mount_subtree);
62197
62198-SYSCALL_DEFINE5(mount, char __user *, dev_name, char __user *, dir_name,
62199- char __user *, type, unsigned long, flags, void __user *, data)
62200+SYSCALL_DEFINE5(mount, const char __user *, dev_name, const char __user *, dir_name,
62201+ const char __user *, type, unsigned long, flags, void __user *, data)
62202 {
62203 int ret;
62204 char *kernel_type;
62205@@ -2731,6 +2750,11 @@ SYSCALL_DEFINE2(pivot_root, const char __user *, new_root,
62206 if (error)
62207 goto out2;
62208
62209+ if (gr_handle_chroot_pivot()) {
62210+ error = -EPERM;
62211+ goto out2;
62212+ }
62213+
62214 get_fs_root(current->fs, &root);
62215 old_mp = lock_mount(&old);
62216 error = PTR_ERR(old_mp);
62217@@ -2999,7 +3023,7 @@ static int mntns_install(struct nsproxy *nsproxy, void *ns)
62218 !ns_capable(current_user_ns(), CAP_SYS_ADMIN))
62219 return -EPERM;
62220
62221- if (fs->users != 1)
62222+ if (atomic_read(&fs->users) != 1)
62223 return -EINVAL;
62224
62225 get_mnt_ns(mnt_ns);
62226diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
62227index f4ccfe6..a5cf064 100644
62228--- a/fs/nfs/callback_xdr.c
62229+++ b/fs/nfs/callback_xdr.c
62230@@ -51,7 +51,7 @@ struct callback_op {
62231 callback_decode_arg_t decode_args;
62232 callback_encode_res_t encode_res;
62233 long res_maxsize;
62234-};
62235+} __do_const;
62236
62237 static struct callback_op callback_ops[];
62238
62239diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
62240index c79f3e7..d61d671 100644
62241--- a/fs/nfs/inode.c
62242+++ b/fs/nfs/inode.c
62243@@ -1209,16 +1209,16 @@ static int nfs_size_need_update(const struct inode *inode, const struct nfs_fatt
62244 return nfs_size_to_loff_t(fattr->size) > i_size_read(inode);
62245 }
62246
62247-static atomic_long_t nfs_attr_generation_counter;
62248+static atomic_long_unchecked_t nfs_attr_generation_counter;
62249
62250 static unsigned long nfs_read_attr_generation_counter(void)
62251 {
62252- return atomic_long_read(&nfs_attr_generation_counter);
62253+ return atomic_long_read_unchecked(&nfs_attr_generation_counter);
62254 }
62255
62256 unsigned long nfs_inc_attr_generation_counter(void)
62257 {
62258- return atomic_long_inc_return(&nfs_attr_generation_counter);
62259+ return atomic_long_inc_return_unchecked(&nfs_attr_generation_counter);
62260 }
62261
62262 void nfs_fattr_init(struct nfs_fattr *fattr)
62263diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
62264index d543222..2cfa2a2 100644
62265--- a/fs/nfsd/nfs4proc.c
62266+++ b/fs/nfsd/nfs4proc.c
62267@@ -1178,7 +1178,7 @@ struct nfsd4_operation {
62268 nfsd4op_rsize op_rsize_bop;
62269 stateid_getter op_get_currentstateid;
62270 stateid_setter op_set_currentstateid;
62271-};
62272+} __do_const;
62273
62274 static struct nfsd4_operation nfsd4_ops[];
62275
62276diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
62277index b4c4958..04687ad 100644
62278--- a/fs/nfsd/nfs4xdr.c
62279+++ b/fs/nfsd/nfs4xdr.c
62280@@ -1530,7 +1530,7 @@ nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p)
62281
62282 typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *);
62283
62284-static nfsd4_dec nfsd4_dec_ops[] = {
62285+static const nfsd4_dec nfsd4_dec_ops[] = {
62286 [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access,
62287 [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close,
62288 [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit,
62289diff --git a/fs/nfsd/nfscache.c b/fs/nfsd/nfscache.c
62290index f8f060f..c4ba09a 100644
62291--- a/fs/nfsd/nfscache.c
62292+++ b/fs/nfsd/nfscache.c
62293@@ -519,14 +519,17 @@ nfsd_cache_update(struct svc_rqst *rqstp, int cachetype, __be32 *statp)
62294 {
62295 struct svc_cacherep *rp = rqstp->rq_cacherep;
62296 struct kvec *resv = &rqstp->rq_res.head[0], *cachv;
62297- int len;
62298+ long len;
62299 size_t bufsize = 0;
62300
62301 if (!rp)
62302 return;
62303
62304- len = resv->iov_len - ((char*)statp - (char*)resv->iov_base);
62305- len >>= 2;
62306+ if (statp) {
62307+ len = (char*)statp - (char*)resv->iov_base;
62308+ len = resv->iov_len - len;
62309+ len >>= 2;
62310+ }
62311
62312 /* Don't cache excessive amounts of data and XDR failures */
62313 if (!statp || len > (256 >> 2)) {
62314diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
62315index 16f0673..1c2c30ab 100644
62316--- a/fs/nfsd/vfs.c
62317+++ b/fs/nfsd/vfs.c
62318@@ -843,7 +843,7 @@ nfsd_vfs_read(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
62319 } else {
62320 oldfs = get_fs();
62321 set_fs(KERNEL_DS);
62322- host_err = vfs_readv(file, (struct iovec __user *)vec, vlen, &offset);
62323+ host_err = vfs_readv(file, (struct iovec __force_user *)vec, vlen, &offset);
62324 set_fs(oldfs);
62325 }
62326
62327@@ -934,7 +934,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file,
62328
62329 /* Write the data. */
62330 oldfs = get_fs(); set_fs(KERNEL_DS);
62331- host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &pos);
62332+ host_err = vfs_writev(file, (struct iovec __force_user *)vec, vlen, &pos);
62333 set_fs(oldfs);
62334 if (host_err < 0)
62335 goto out_nfserr;
62336@@ -1479,7 +1479,7 @@ nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp)
62337 */
62338
62339 oldfs = get_fs(); set_fs(KERNEL_DS);
62340- host_err = inode->i_op->readlink(path.dentry, (char __user *)buf, *lenp);
62341+ host_err = inode->i_op->readlink(path.dentry, (char __force_user *)buf, *lenp);
62342 set_fs(oldfs);
62343
62344 if (host_err < 0)
62345diff --git a/fs/nls/nls_base.c b/fs/nls/nls_base.c
62346index 52ccd34..43a53b1 100644
62347--- a/fs/nls/nls_base.c
62348+++ b/fs/nls/nls_base.c
62349@@ -234,21 +234,25 @@ EXPORT_SYMBOL(utf16s_to_utf8s);
62350
62351 int __register_nls(struct nls_table *nls, struct module *owner)
62352 {
62353- struct nls_table ** tmp = &tables;
62354+ struct nls_table *tmp = tables;
62355
62356 if (nls->next)
62357 return -EBUSY;
62358
62359- nls->owner = owner;
62360+ pax_open_kernel();
62361+ *(void **)&nls->owner = owner;
62362+ pax_close_kernel();
62363 spin_lock(&nls_lock);
62364- while (*tmp) {
62365- if (nls == *tmp) {
62366+ while (tmp) {
62367+ if (nls == tmp) {
62368 spin_unlock(&nls_lock);
62369 return -EBUSY;
62370 }
62371- tmp = &(*tmp)->next;
62372+ tmp = tmp->next;
62373 }
62374- nls->next = tables;
62375+ pax_open_kernel();
62376+ *(struct nls_table **)&nls->next = tables;
62377+ pax_close_kernel();
62378 tables = nls;
62379 spin_unlock(&nls_lock);
62380 return 0;
62381@@ -257,12 +261,14 @@ EXPORT_SYMBOL(__register_nls);
62382
62383 int unregister_nls(struct nls_table * nls)
62384 {
62385- struct nls_table ** tmp = &tables;
62386+ struct nls_table * const * tmp = &tables;
62387
62388 spin_lock(&nls_lock);
62389 while (*tmp) {
62390 if (nls == *tmp) {
62391- *tmp = nls->next;
62392+ pax_open_kernel();
62393+ *(struct nls_table **)tmp = nls->next;
62394+ pax_close_kernel();
62395 spin_unlock(&nls_lock);
62396 return 0;
62397 }
62398diff --git a/fs/nls/nls_euc-jp.c b/fs/nls/nls_euc-jp.c
62399index 162b3f1..6076a7c 100644
62400--- a/fs/nls/nls_euc-jp.c
62401+++ b/fs/nls/nls_euc-jp.c
62402@@ -560,8 +560,10 @@ static int __init init_nls_euc_jp(void)
62403 p_nls = load_nls("cp932");
62404
62405 if (p_nls) {
62406- table.charset2upper = p_nls->charset2upper;
62407- table.charset2lower = p_nls->charset2lower;
62408+ pax_open_kernel();
62409+ *(const unsigned char **)&table.charset2upper = p_nls->charset2upper;
62410+ *(const unsigned char **)&table.charset2lower = p_nls->charset2lower;
62411+ pax_close_kernel();
62412 return register_nls(&table);
62413 }
62414
62415diff --git a/fs/nls/nls_koi8-ru.c b/fs/nls/nls_koi8-ru.c
62416index a80a741..7b96e1b 100644
62417--- a/fs/nls/nls_koi8-ru.c
62418+++ b/fs/nls/nls_koi8-ru.c
62419@@ -62,8 +62,10 @@ static int __init init_nls_koi8_ru(void)
62420 p_nls = load_nls("koi8-u");
62421
62422 if (p_nls) {
62423- table.charset2upper = p_nls->charset2upper;
62424- table.charset2lower = p_nls->charset2lower;
62425+ pax_open_kernel();
62426+ *(const unsigned char **)&table.charset2upper = p_nls->charset2upper;
62427+ *(const unsigned char **)&table.charset2lower = p_nls->charset2lower;
62428+ pax_close_kernel();
62429 return register_nls(&table);
62430 }
62431
62432diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c
62433index 732648b..d3b017f 100644
62434--- a/fs/notify/fanotify/fanotify_user.c
62435+++ b/fs/notify/fanotify/fanotify_user.c
62436@@ -203,8 +203,8 @@ static ssize_t copy_event_to_user(struct fsnotify_group *group,
62437
62438 fd = fanotify_event_metadata.fd;
62439 ret = -EFAULT;
62440- if (copy_to_user(buf, &fanotify_event_metadata,
62441- fanotify_event_metadata.event_len))
62442+ if (fanotify_event_metadata.event_len > sizeof fanotify_event_metadata ||
62443+ copy_to_user(buf, &fanotify_event_metadata, fanotify_event_metadata.event_len))
62444 goto out_close_fd;
62445
62446 #ifdef CONFIG_FANOTIFY_ACCESS_PERMISSIONS
62447diff --git a/fs/notify/notification.c b/fs/notify/notification.c
62448index 1e58402..bb2d6f4 100644
62449--- a/fs/notify/notification.c
62450+++ b/fs/notify/notification.c
62451@@ -48,7 +48,7 @@
62452 #include <linux/fsnotify_backend.h>
62453 #include "fsnotify.h"
62454
62455-static atomic_t fsnotify_sync_cookie = ATOMIC_INIT(0);
62456+static atomic_unchecked_t fsnotify_sync_cookie = ATOMIC_INIT(0);
62457
62458 /**
62459 * fsnotify_get_cookie - return a unique cookie for use in synchronizing events.
62460@@ -56,7 +56,7 @@ static atomic_t fsnotify_sync_cookie = ATOMIC_INIT(0);
62461 */
62462 u32 fsnotify_get_cookie(void)
62463 {
62464- return atomic_inc_return(&fsnotify_sync_cookie);
62465+ return atomic_inc_return_unchecked(&fsnotify_sync_cookie);
62466 }
62467 EXPORT_SYMBOL_GPL(fsnotify_get_cookie);
62468
62469diff --git a/fs/ntfs/dir.c b/fs/ntfs/dir.c
62470index 9e38daf..5727cae 100644
62471--- a/fs/ntfs/dir.c
62472+++ b/fs/ntfs/dir.c
62473@@ -1310,7 +1310,7 @@ find_next_index_buffer:
62474 ia = (INDEX_ALLOCATION*)(kaddr + (ia_pos & ~PAGE_CACHE_MASK &
62475 ~(s64)(ndir->itype.index.block_size - 1)));
62476 /* Bounds checks. */
62477- if (unlikely((u8*)ia < kaddr || (u8*)ia > kaddr + PAGE_CACHE_SIZE)) {
62478+ if (unlikely(!kaddr || (u8*)ia < kaddr || (u8*)ia > kaddr + PAGE_CACHE_SIZE)) {
62479 ntfs_error(sb, "Out of bounds check failed. Corrupt directory "
62480 "inode 0x%lx or driver bug.", vdir->i_ino);
62481 goto err_out;
62482diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
62483index db9bd8a..8338fb6 100644
62484--- a/fs/ntfs/file.c
62485+++ b/fs/ntfs/file.c
62486@@ -1282,7 +1282,7 @@ static inline size_t ntfs_copy_from_user(struct page **pages,
62487 char *addr;
62488 size_t total = 0;
62489 unsigned len;
62490- int left;
62491+ unsigned left;
62492
62493 do {
62494 len = PAGE_CACHE_SIZE - ofs;
62495diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
62496index 9de2491..3306095 100644
62497--- a/fs/ntfs/super.c
62498+++ b/fs/ntfs/super.c
62499@@ -688,7 +688,7 @@ static struct buffer_head *read_ntfs_boot_sector(struct super_block *sb,
62500 if (!silent)
62501 ntfs_error(sb, "Primary boot sector is invalid.");
62502 } else if (!silent)
62503- ntfs_error(sb, read_err_str, "primary");
62504+ ntfs_error(sb, read_err_str, "%s", "primary");
62505 if (!(NTFS_SB(sb)->on_errors & ON_ERRORS_RECOVER)) {
62506 if (bh_primary)
62507 brelse(bh_primary);
62508@@ -704,7 +704,7 @@ static struct buffer_head *read_ntfs_boot_sector(struct super_block *sb,
62509 goto hotfix_primary_boot_sector;
62510 brelse(bh_backup);
62511 } else if (!silent)
62512- ntfs_error(sb, read_err_str, "backup");
62513+ ntfs_error(sb, read_err_str, "%s", "backup");
62514 /* Try to read NT3.51- backup boot sector. */
62515 if ((bh_backup = sb_bread(sb, nr_blocks >> 1))) {
62516 if (is_boot_sector_ntfs(sb, (NTFS_BOOT_SECTOR*)
62517@@ -715,7 +715,7 @@ static struct buffer_head *read_ntfs_boot_sector(struct super_block *sb,
62518 "sector.");
62519 brelse(bh_backup);
62520 } else if (!silent)
62521- ntfs_error(sb, read_err_str, "backup");
62522+ ntfs_error(sb, read_err_str, "%s", "backup");
62523 /* We failed. Cleanup and return. */
62524 if (bh_primary)
62525 brelse(bh_primary);
62526diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
62527index 0440134..d52c93a 100644
62528--- a/fs/ocfs2/localalloc.c
62529+++ b/fs/ocfs2/localalloc.c
62530@@ -1320,7 +1320,7 @@ static int ocfs2_local_alloc_slide_window(struct ocfs2_super *osb,
62531 goto bail;
62532 }
62533
62534- atomic_inc(&osb->alloc_stats.moves);
62535+ atomic_inc_unchecked(&osb->alloc_stats.moves);
62536
62537 bail:
62538 if (handle)
62539diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
62540index 8d64a97..c37665d 100644
62541--- a/fs/ocfs2/ocfs2.h
62542+++ b/fs/ocfs2/ocfs2.h
62543@@ -236,11 +236,11 @@ enum ocfs2_vol_state
62544
62545 struct ocfs2_alloc_stats
62546 {
62547- atomic_t moves;
62548- atomic_t local_data;
62549- atomic_t bitmap_data;
62550- atomic_t bg_allocs;
62551- atomic_t bg_extends;
62552+ atomic_unchecked_t moves;
62553+ atomic_unchecked_t local_data;
62554+ atomic_unchecked_t bitmap_data;
62555+ atomic_unchecked_t bg_allocs;
62556+ atomic_unchecked_t bg_extends;
62557 };
62558
62559 enum ocfs2_local_alloc_state
62560diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
62561index 0cb889a..6a26b24 100644
62562--- a/fs/ocfs2/suballoc.c
62563+++ b/fs/ocfs2/suballoc.c
62564@@ -867,7 +867,7 @@ static int ocfs2_reserve_suballoc_bits(struct ocfs2_super *osb,
62565 mlog_errno(status);
62566 goto bail;
62567 }
62568- atomic_inc(&osb->alloc_stats.bg_extends);
62569+ atomic_inc_unchecked(&osb->alloc_stats.bg_extends);
62570
62571 /* You should never ask for this much metadata */
62572 BUG_ON(bits_wanted >
62573@@ -2014,7 +2014,7 @@ int ocfs2_claim_metadata(handle_t *handle,
62574 mlog_errno(status);
62575 goto bail;
62576 }
62577- atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
62578+ atomic_inc_unchecked(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
62579
62580 *suballoc_loc = res.sr_bg_blkno;
62581 *suballoc_bit_start = res.sr_bit_offset;
62582@@ -2180,7 +2180,7 @@ int ocfs2_claim_new_inode_at_loc(handle_t *handle,
62583 trace_ocfs2_claim_new_inode_at_loc((unsigned long long)di_blkno,
62584 res->sr_bits);
62585
62586- atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
62587+ atomic_inc_unchecked(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
62588
62589 BUG_ON(res->sr_bits != 1);
62590
62591@@ -2222,7 +2222,7 @@ int ocfs2_claim_new_inode(handle_t *handle,
62592 mlog_errno(status);
62593 goto bail;
62594 }
62595- atomic_inc(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
62596+ atomic_inc_unchecked(&OCFS2_SB(ac->ac_inode->i_sb)->alloc_stats.bg_allocs);
62597
62598 BUG_ON(res.sr_bits != 1);
62599
62600@@ -2326,7 +2326,7 @@ int __ocfs2_claim_clusters(handle_t *handle,
62601 cluster_start,
62602 num_clusters);
62603 if (!status)
62604- atomic_inc(&osb->alloc_stats.local_data);
62605+ atomic_inc_unchecked(&osb->alloc_stats.local_data);
62606 } else {
62607 if (min_clusters > (osb->bitmap_cpg - 1)) {
62608 /* The only paths asking for contiguousness
62609@@ -2352,7 +2352,7 @@ int __ocfs2_claim_clusters(handle_t *handle,
62610 ocfs2_desc_bitmap_to_cluster_off(ac->ac_inode,
62611 res.sr_bg_blkno,
62612 res.sr_bit_offset);
62613- atomic_inc(&osb->alloc_stats.bitmap_data);
62614+ atomic_inc_unchecked(&osb->alloc_stats.bitmap_data);
62615 *num_clusters = res.sr_bits;
62616 }
62617 }
62618diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
62619index a7cdd56..c583144 100644
62620--- a/fs/ocfs2/super.c
62621+++ b/fs/ocfs2/super.c
62622@@ -300,11 +300,11 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
62623 "%10s => GlobalAllocs: %d LocalAllocs: %d "
62624 "SubAllocs: %d LAWinMoves: %d SAExtends: %d\n",
62625 "Stats",
62626- atomic_read(&osb->alloc_stats.bitmap_data),
62627- atomic_read(&osb->alloc_stats.local_data),
62628- atomic_read(&osb->alloc_stats.bg_allocs),
62629- atomic_read(&osb->alloc_stats.moves),
62630- atomic_read(&osb->alloc_stats.bg_extends));
62631+ atomic_read_unchecked(&osb->alloc_stats.bitmap_data),
62632+ atomic_read_unchecked(&osb->alloc_stats.local_data),
62633+ atomic_read_unchecked(&osb->alloc_stats.bg_allocs),
62634+ atomic_read_unchecked(&osb->alloc_stats.moves),
62635+ atomic_read_unchecked(&osb->alloc_stats.bg_extends));
62636
62637 out += snprintf(buf + out, len - out,
62638 "%10s => State: %u Descriptor: %llu Size: %u bits "
62639@@ -2104,11 +2104,11 @@ static int ocfs2_initialize_super(struct super_block *sb,
62640
62641 mutex_init(&osb->system_file_mutex);
62642
62643- atomic_set(&osb->alloc_stats.moves, 0);
62644- atomic_set(&osb->alloc_stats.local_data, 0);
62645- atomic_set(&osb->alloc_stats.bitmap_data, 0);
62646- atomic_set(&osb->alloc_stats.bg_allocs, 0);
62647- atomic_set(&osb->alloc_stats.bg_extends, 0);
62648+ atomic_set_unchecked(&osb->alloc_stats.moves, 0);
62649+ atomic_set_unchecked(&osb->alloc_stats.local_data, 0);
62650+ atomic_set_unchecked(&osb->alloc_stats.bitmap_data, 0);
62651+ atomic_set_unchecked(&osb->alloc_stats.bg_allocs, 0);
62652+ atomic_set_unchecked(&osb->alloc_stats.bg_extends, 0);
62653
62654 /* Copy the blockcheck stats from the superblock probe */
62655 osb->osb_ecc_stats = *stats;
62656diff --git a/fs/open.c b/fs/open.c
62657index 9d64679..75f925c 100644
62658--- a/fs/open.c
62659+++ b/fs/open.c
62660@@ -32,6 +32,8 @@
62661 #include <linux/dnotify.h>
62662 #include <linux/compat.h>
62663
62664+#define CREATE_TRACE_POINTS
62665+#include <trace/events/fs.h>
62666 #include "internal.h"
62667
62668 int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
62669@@ -103,6 +105,8 @@ long vfs_truncate(struct path *path, loff_t length)
62670 error = locks_verify_truncate(inode, NULL, length);
62671 if (!error)
62672 error = security_path_truncate(path);
62673+ if (!error && !gr_acl_handle_truncate(path->dentry, path->mnt))
62674+ error = -EACCES;
62675 if (!error)
62676 error = do_truncate(path->dentry, length, 0, NULL);
62677
62678@@ -187,6 +191,8 @@ static long do_sys_ftruncate(unsigned int fd, loff_t length, int small)
62679 error = locks_verify_truncate(inode, f.file, length);
62680 if (!error)
62681 error = security_path_truncate(&f.file->f_path);
62682+ if (!error && !gr_acl_handle_truncate(f.file->f_path.dentry, f.file->f_path.mnt))
62683+ error = -EACCES;
62684 if (!error)
62685 error = do_truncate(dentry, length, ATTR_MTIME|ATTR_CTIME, f.file);
62686 sb_end_write(inode->i_sb);
62687@@ -381,6 +387,9 @@ retry:
62688 if (__mnt_is_readonly(path.mnt))
62689 res = -EROFS;
62690
62691+ if (!res && !gr_acl_handle_access(path.dentry, path.mnt, mode))
62692+ res = -EACCES;
62693+
62694 out_path_release:
62695 path_put(&path);
62696 if (retry_estale(res, lookup_flags)) {
62697@@ -412,6 +421,8 @@ retry:
62698 if (error)
62699 goto dput_and_out;
62700
62701+ gr_log_chdir(path.dentry, path.mnt);
62702+
62703 set_fs_pwd(current->fs, &path);
62704
62705 dput_and_out:
62706@@ -441,6 +452,13 @@ SYSCALL_DEFINE1(fchdir, unsigned int, fd)
62707 goto out_putf;
62708
62709 error = inode_permission(inode, MAY_EXEC | MAY_CHDIR);
62710+
62711+ if (!error && !gr_chroot_fchdir(f.file->f_path.dentry, f.file->f_path.mnt))
62712+ error = -EPERM;
62713+
62714+ if (!error)
62715+ gr_log_chdir(f.file->f_path.dentry, f.file->f_path.mnt);
62716+
62717 if (!error)
62718 set_fs_pwd(current->fs, &f.file->f_path);
62719 out_putf:
62720@@ -470,7 +488,13 @@ retry:
62721 if (error)
62722 goto dput_and_out;
62723
62724+ if (gr_handle_chroot_chroot(path.dentry, path.mnt))
62725+ goto dput_and_out;
62726+
62727 set_fs_root(current->fs, &path);
62728+
62729+ gr_handle_chroot_chdir(&path);
62730+
62731 error = 0;
62732 dput_and_out:
62733 path_put(&path);
62734@@ -494,6 +518,16 @@ static int chmod_common(struct path *path, umode_t mode)
62735 return error;
62736 retry_deleg:
62737 mutex_lock(&inode->i_mutex);
62738+
62739+ if (!gr_acl_handle_chmod(path->dentry, path->mnt, &mode)) {
62740+ error = -EACCES;
62741+ goto out_unlock;
62742+ }
62743+ if (gr_handle_chroot_chmod(path->dentry, path->mnt, mode)) {
62744+ error = -EACCES;
62745+ goto out_unlock;
62746+ }
62747+
62748 error = security_path_chmod(path, mode);
62749 if (error)
62750 goto out_unlock;
62751@@ -559,6 +593,9 @@ static int chown_common(struct path *path, uid_t user, gid_t group)
62752 uid = make_kuid(current_user_ns(), user);
62753 gid = make_kgid(current_user_ns(), group);
62754
62755+ if (!gr_acl_handle_chown(path->dentry, path->mnt))
62756+ return -EACCES;
62757+
62758 newattrs.ia_valid = ATTR_CTIME;
62759 if (user != (uid_t) -1) {
62760 if (!uid_valid(uid))
62761@@ -978,6 +1015,7 @@ long do_sys_open(int dfd, const char __user *filename, int flags, umode_t mode)
62762 } else {
62763 fsnotify_open(f);
62764 fd_install(fd, f);
62765+ trace_do_sys_open(tmp->name, flags, mode);
62766 }
62767 }
62768 putname(tmp);
62769diff --git a/fs/pipe.c b/fs/pipe.c
62770index 034bffa..6c6b522 100644
62771--- a/fs/pipe.c
62772+++ b/fs/pipe.c
62773@@ -56,7 +56,7 @@ unsigned int pipe_min_size = PAGE_SIZE;
62774
62775 static void pipe_lock_nested(struct pipe_inode_info *pipe, int subclass)
62776 {
62777- if (pipe->files)
62778+ if (atomic_read(&pipe->files))
62779 mutex_lock_nested(&pipe->mutex, subclass);
62780 }
62781
62782@@ -71,7 +71,7 @@ EXPORT_SYMBOL(pipe_lock);
62783
62784 void pipe_unlock(struct pipe_inode_info *pipe)
62785 {
62786- if (pipe->files)
62787+ if (atomic_read(&pipe->files))
62788 mutex_unlock(&pipe->mutex);
62789 }
62790 EXPORT_SYMBOL(pipe_unlock);
62791@@ -342,9 +342,9 @@ pipe_read(struct kiocb *iocb, const struct iovec *_iov,
62792 }
62793 if (bufs) /* More to do? */
62794 continue;
62795- if (!pipe->writers)
62796+ if (!atomic_read(&pipe->writers))
62797 break;
62798- if (!pipe->waiting_writers) {
62799+ if (!atomic_read(&pipe->waiting_writers)) {
62800 /* syscall merging: Usually we must not sleep
62801 * if O_NONBLOCK is set, or if we got some data.
62802 * But if a writer sleeps in kernel space, then
62803@@ -406,7 +406,7 @@ pipe_write(struct kiocb *iocb, const struct iovec *_iov,
62804 ret = 0;
62805 __pipe_lock(pipe);
62806
62807- if (!pipe->readers) {
62808+ if (!atomic_read(&pipe->readers)) {
62809 send_sig(SIGPIPE, current, 0);
62810 ret = -EPIPE;
62811 goto out;
62812@@ -461,7 +461,7 @@ redo1:
62813 for (;;) {
62814 int bufs;
62815
62816- if (!pipe->readers) {
62817+ if (!atomic_read(&pipe->readers)) {
62818 send_sig(SIGPIPE, current, 0);
62819 if (!ret)
62820 ret = -EPIPE;
62821@@ -552,9 +552,9 @@ redo2:
62822 kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
62823 do_wakeup = 0;
62824 }
62825- pipe->waiting_writers++;
62826+ atomic_inc(&pipe->waiting_writers);
62827 pipe_wait(pipe);
62828- pipe->waiting_writers--;
62829+ atomic_dec(&pipe->waiting_writers);
62830 }
62831 out:
62832 __pipe_unlock(pipe);
62833@@ -609,7 +609,7 @@ pipe_poll(struct file *filp, poll_table *wait)
62834 mask = 0;
62835 if (filp->f_mode & FMODE_READ) {
62836 mask = (nrbufs > 0) ? POLLIN | POLLRDNORM : 0;
62837- if (!pipe->writers && filp->f_version != pipe->w_counter)
62838+ if (!atomic_read(&pipe->writers) && filp->f_version != pipe->w_counter)
62839 mask |= POLLHUP;
62840 }
62841
62842@@ -619,7 +619,7 @@ pipe_poll(struct file *filp, poll_table *wait)
62843 * Most Unices do not set POLLERR for FIFOs but on Linux they
62844 * behave exactly like pipes for poll().
62845 */
62846- if (!pipe->readers)
62847+ if (!atomic_read(&pipe->readers))
62848 mask |= POLLERR;
62849 }
62850
62851@@ -631,7 +631,7 @@ static void put_pipe_info(struct inode *inode, struct pipe_inode_info *pipe)
62852 int kill = 0;
62853
62854 spin_lock(&inode->i_lock);
62855- if (!--pipe->files) {
62856+ if (atomic_dec_and_test(&pipe->files)) {
62857 inode->i_pipe = NULL;
62858 kill = 1;
62859 }
62860@@ -648,11 +648,11 @@ pipe_release(struct inode *inode, struct file *file)
62861
62862 __pipe_lock(pipe);
62863 if (file->f_mode & FMODE_READ)
62864- pipe->readers--;
62865+ atomic_dec(&pipe->readers);
62866 if (file->f_mode & FMODE_WRITE)
62867- pipe->writers--;
62868+ atomic_dec(&pipe->writers);
62869
62870- if (pipe->readers || pipe->writers) {
62871+ if (atomic_read(&pipe->readers) || atomic_read(&pipe->writers)) {
62872 wake_up_interruptible_sync_poll(&pipe->wait, POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM | POLLERR | POLLHUP);
62873 kill_fasync(&pipe->fasync_readers, SIGIO, POLL_IN);
62874 kill_fasync(&pipe->fasync_writers, SIGIO, POLL_OUT);
62875@@ -717,7 +717,7 @@ void free_pipe_info(struct pipe_inode_info *pipe)
62876 kfree(pipe);
62877 }
62878
62879-static struct vfsmount *pipe_mnt __read_mostly;
62880+struct vfsmount *pipe_mnt __read_mostly;
62881
62882 /*
62883 * pipefs_dname() is called from d_path().
62884@@ -747,8 +747,9 @@ static struct inode * get_pipe_inode(void)
62885 goto fail_iput;
62886
62887 inode->i_pipe = pipe;
62888- pipe->files = 2;
62889- pipe->readers = pipe->writers = 1;
62890+ atomic_set(&pipe->files, 2);
62891+ atomic_set(&pipe->readers, 1);
62892+ atomic_set(&pipe->writers, 1);
62893 inode->i_fop = &pipefifo_fops;
62894
62895 /*
62896@@ -927,17 +928,17 @@ static int fifo_open(struct inode *inode, struct file *filp)
62897 spin_lock(&inode->i_lock);
62898 if (inode->i_pipe) {
62899 pipe = inode->i_pipe;
62900- pipe->files++;
62901+ atomic_inc(&pipe->files);
62902 spin_unlock(&inode->i_lock);
62903 } else {
62904 spin_unlock(&inode->i_lock);
62905 pipe = alloc_pipe_info();
62906 if (!pipe)
62907 return -ENOMEM;
62908- pipe->files = 1;
62909+ atomic_set(&pipe->files, 1);
62910 spin_lock(&inode->i_lock);
62911 if (unlikely(inode->i_pipe)) {
62912- inode->i_pipe->files++;
62913+ atomic_inc(&inode->i_pipe->files);
62914 spin_unlock(&inode->i_lock);
62915 free_pipe_info(pipe);
62916 pipe = inode->i_pipe;
62917@@ -962,10 +963,10 @@ static int fifo_open(struct inode *inode, struct file *filp)
62918 * opened, even when there is no process writing the FIFO.
62919 */
62920 pipe->r_counter++;
62921- if (pipe->readers++ == 0)
62922+ if (atomic_inc_return(&pipe->readers) == 1)
62923 wake_up_partner(pipe);
62924
62925- if (!is_pipe && !pipe->writers) {
62926+ if (!is_pipe && !atomic_read(&pipe->writers)) {
62927 if ((filp->f_flags & O_NONBLOCK)) {
62928 /* suppress POLLHUP until we have
62929 * seen a writer */
62930@@ -984,14 +985,14 @@ static int fifo_open(struct inode *inode, struct file *filp)
62931 * errno=ENXIO when there is no process reading the FIFO.
62932 */
62933 ret = -ENXIO;
62934- if (!is_pipe && (filp->f_flags & O_NONBLOCK) && !pipe->readers)
62935+ if (!is_pipe && (filp->f_flags & O_NONBLOCK) && !atomic_read(&pipe->readers))
62936 goto err;
62937
62938 pipe->w_counter++;
62939- if (!pipe->writers++)
62940+ if (atomic_inc_return(&pipe->writers) == 1)
62941 wake_up_partner(pipe);
62942
62943- if (!is_pipe && !pipe->readers) {
62944+ if (!is_pipe && !atomic_read(&pipe->readers)) {
62945 if (wait_for_partner(pipe, &pipe->r_counter))
62946 goto err_wr;
62947 }
62948@@ -1005,11 +1006,11 @@ static int fifo_open(struct inode *inode, struct file *filp)
62949 * the process can at least talk to itself.
62950 */
62951
62952- pipe->readers++;
62953- pipe->writers++;
62954+ atomic_inc(&pipe->readers);
62955+ atomic_inc(&pipe->writers);
62956 pipe->r_counter++;
62957 pipe->w_counter++;
62958- if (pipe->readers == 1 || pipe->writers == 1)
62959+ if (atomic_read(&pipe->readers) == 1 || atomic_read(&pipe->writers) == 1)
62960 wake_up_partner(pipe);
62961 break;
62962
62963@@ -1023,13 +1024,13 @@ static int fifo_open(struct inode *inode, struct file *filp)
62964 return 0;
62965
62966 err_rd:
62967- if (!--pipe->readers)
62968+ if (atomic_dec_and_test(&pipe->readers))
62969 wake_up_interruptible(&pipe->wait);
62970 ret = -ERESTARTSYS;
62971 goto err;
62972
62973 err_wr:
62974- if (!--pipe->writers)
62975+ if (atomic_dec_and_test(&pipe->writers))
62976 wake_up_interruptible(&pipe->wait);
62977 ret = -ERESTARTSYS;
62978 goto err;
62979diff --git a/fs/posix_acl.c b/fs/posix_acl.c
62980index 0855f77..6787d50 100644
62981--- a/fs/posix_acl.c
62982+++ b/fs/posix_acl.c
62983@@ -20,6 +20,7 @@
62984 #include <linux/xattr.h>
62985 #include <linux/export.h>
62986 #include <linux/user_namespace.h>
62987+#include <linux/grsecurity.h>
62988
62989 struct posix_acl **acl_by_type(struct inode *inode, int type)
62990 {
62991@@ -277,7 +278,7 @@ posix_acl_equiv_mode(const struct posix_acl *acl, umode_t *mode_p)
62992 }
62993 }
62994 if (mode_p)
62995- *mode_p = (*mode_p & ~S_IRWXUGO) | mode;
62996+ *mode_p = ((*mode_p & ~S_IRWXUGO) | mode) & ~gr_acl_umask();
62997 return not_equiv;
62998 }
62999 EXPORT_SYMBOL(posix_acl_equiv_mode);
63000@@ -427,7 +428,7 @@ static int posix_acl_create_masq(struct posix_acl *acl, umode_t *mode_p)
63001 mode &= (group_obj->e_perm << 3) | ~S_IRWXG;
63002 }
63003
63004- *mode_p = (*mode_p & ~S_IRWXUGO) | mode;
63005+ *mode_p = ((*mode_p & ~S_IRWXUGO) | mode) & ~gr_acl_umask();
63006 return not_equiv;
63007 }
63008
63009@@ -485,6 +486,8 @@ __posix_acl_create(struct posix_acl **acl, gfp_t gfp, umode_t *mode_p)
63010 struct posix_acl *clone = posix_acl_clone(*acl, gfp);
63011 int err = -ENOMEM;
63012 if (clone) {
63013+ *mode_p &= ~gr_acl_umask();
63014+
63015 err = posix_acl_create_masq(clone, mode_p);
63016 if (err < 0) {
63017 posix_acl_release(clone);
63018@@ -659,11 +662,12 @@ struct posix_acl *
63019 posix_acl_from_xattr(struct user_namespace *user_ns,
63020 const void *value, size_t size)
63021 {
63022- posix_acl_xattr_header *header = (posix_acl_xattr_header *)value;
63023- posix_acl_xattr_entry *entry = (posix_acl_xattr_entry *)(header+1), *end;
63024+ const posix_acl_xattr_header *header = (const posix_acl_xattr_header *)value;
63025+ const posix_acl_xattr_entry *entry = (const posix_acl_xattr_entry *)(header+1), *end;
63026 int count;
63027 struct posix_acl *acl;
63028 struct posix_acl_entry *acl_e;
63029+ umode_t umask = gr_acl_umask();
63030
63031 if (!value)
63032 return NULL;
63033@@ -689,12 +693,18 @@ posix_acl_from_xattr(struct user_namespace *user_ns,
63034
63035 switch(acl_e->e_tag) {
63036 case ACL_USER_OBJ:
63037+ acl_e->e_perm &= ~((umask & S_IRWXU) >> 6);
63038+ break;
63039 case ACL_GROUP_OBJ:
63040 case ACL_MASK:
63041+ acl_e->e_perm &= ~((umask & S_IRWXG) >> 3);
63042+ break;
63043 case ACL_OTHER:
63044+ acl_e->e_perm &= ~(umask & S_IRWXO);
63045 break;
63046
63047 case ACL_USER:
63048+ acl_e->e_perm &= ~((umask & S_IRWXU) >> 6);
63049 acl_e->e_uid =
63050 make_kuid(user_ns,
63051 le32_to_cpu(entry->e_id));
63052@@ -702,6 +712,7 @@ posix_acl_from_xattr(struct user_namespace *user_ns,
63053 goto fail;
63054 break;
63055 case ACL_GROUP:
63056+ acl_e->e_perm &= ~((umask & S_IRWXG) >> 3);
63057 acl_e->e_gid =
63058 make_kgid(user_ns,
63059 le32_to_cpu(entry->e_id));
63060diff --git a/fs/proc/Kconfig b/fs/proc/Kconfig
63061index 2183fcf..3c32a98 100644
63062--- a/fs/proc/Kconfig
63063+++ b/fs/proc/Kconfig
63064@@ -30,7 +30,7 @@ config PROC_FS
63065
63066 config PROC_KCORE
63067 bool "/proc/kcore support" if !ARM
63068- depends on PROC_FS && MMU
63069+ depends on PROC_FS && MMU && !GRKERNSEC_PROC_ADD
63070 help
63071 Provides a virtual ELF core file of the live kernel. This can
63072 be read with gdb and other ELF tools. No modifications can be
63073@@ -38,8 +38,8 @@ config PROC_KCORE
63074
63075 config PROC_VMCORE
63076 bool "/proc/vmcore support"
63077- depends on PROC_FS && CRASH_DUMP
63078- default y
63079+ depends on PROC_FS && CRASH_DUMP && !GRKERNSEC
63080+ default n
63081 help
63082 Exports the dump image of crashed kernel in ELF format.
63083
63084@@ -63,8 +63,8 @@ config PROC_SYSCTL
63085 limited in memory.
63086
63087 config PROC_PAGE_MONITOR
63088- default y
63089- depends on PROC_FS && MMU
63090+ default n
63091+ depends on PROC_FS && MMU && !GRKERNSEC
63092 bool "Enable /proc page monitoring" if EXPERT
63093 help
63094 Various /proc files exist to monitor process memory utilization:
63095diff --git a/fs/proc/array.c b/fs/proc/array.c
63096index 64db2bc..a8185d6 100644
63097--- a/fs/proc/array.c
63098+++ b/fs/proc/array.c
63099@@ -60,6 +60,7 @@
63100 #include <linux/tty.h>
63101 #include <linux/string.h>
63102 #include <linux/mman.h>
63103+#include <linux/grsecurity.h>
63104 #include <linux/proc_fs.h>
63105 #include <linux/ioport.h>
63106 #include <linux/uaccess.h>
63107@@ -356,6 +357,21 @@ static void task_cpus_allowed(struct seq_file *m, struct task_struct *task)
63108 seq_putc(m, '\n');
63109 }
63110
63111+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
63112+static inline void task_pax(struct seq_file *m, struct task_struct *p)
63113+{
63114+ if (p->mm)
63115+ seq_printf(m, "PaX:\t%c%c%c%c%c\n",
63116+ p->mm->pax_flags & MF_PAX_PAGEEXEC ? 'P' : 'p',
63117+ p->mm->pax_flags & MF_PAX_EMUTRAMP ? 'E' : 'e',
63118+ p->mm->pax_flags & MF_PAX_MPROTECT ? 'M' : 'm',
63119+ p->mm->pax_flags & MF_PAX_RANDMMAP ? 'R' : 'r',
63120+ p->mm->pax_flags & MF_PAX_SEGMEXEC ? 'S' : 's');
63121+ else
63122+ seq_printf(m, "PaX:\t-----\n");
63123+}
63124+#endif
63125+
63126 int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
63127 struct pid *pid, struct task_struct *task)
63128 {
63129@@ -374,9 +390,24 @@ int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
63130 task_cpus_allowed(m, task);
63131 cpuset_task_status_allowed(m, task);
63132 task_context_switch_counts(m, task);
63133+
63134+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
63135+ task_pax(m, task);
63136+#endif
63137+
63138+#if defined(CONFIG_GRKERNSEC) && !defined(CONFIG_GRKERNSEC_NO_RBAC)
63139+ task_grsec_rbac(m, task);
63140+#endif
63141+
63142 return 0;
63143 }
63144
63145+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
63146+#define PAX_RAND_FLAGS(_mm) (_mm != NULL && _mm != current->mm && \
63147+ (_mm->pax_flags & MF_PAX_RANDMMAP || \
63148+ _mm->pax_flags & MF_PAX_SEGMEXEC))
63149+#endif
63150+
63151 static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
63152 struct pid *pid, struct task_struct *task, int whole)
63153 {
63154@@ -398,6 +429,13 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
63155 char tcomm[sizeof(task->comm)];
63156 unsigned long flags;
63157
63158+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
63159+ if (current->exec_id != m->exec_id) {
63160+ gr_log_badprocpid("stat");
63161+ return 0;
63162+ }
63163+#endif
63164+
63165 state = *get_task_state(task);
63166 vsize = eip = esp = 0;
63167 permitted = ptrace_may_access(task, PTRACE_MODE_READ | PTRACE_MODE_NOAUDIT);
63168@@ -468,6 +506,19 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
63169 gtime = task_gtime(task);
63170 }
63171
63172+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
63173+ if (PAX_RAND_FLAGS(mm)) {
63174+ eip = 0;
63175+ esp = 0;
63176+ wchan = 0;
63177+ }
63178+#endif
63179+#ifdef CONFIG_GRKERNSEC_HIDESYM
63180+ wchan = 0;
63181+ eip =0;
63182+ esp =0;
63183+#endif
63184+
63185 /* scale priority and nice values from timeslices to -20..20 */
63186 /* to make it look like a "normal" Unix priority/nice value */
63187 priority = task_prio(task);
63188@@ -504,9 +555,15 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
63189 seq_put_decimal_ull(m, ' ', vsize);
63190 seq_put_decimal_ull(m, ' ', mm ? get_mm_rss(mm) : 0);
63191 seq_put_decimal_ull(m, ' ', rsslim);
63192+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
63193+ seq_put_decimal_ull(m, ' ', PAX_RAND_FLAGS(mm) ? 1 : (mm ? (permitted ? mm->start_code : 1) : 0));
63194+ seq_put_decimal_ull(m, ' ', PAX_RAND_FLAGS(mm) ? 1 : (mm ? (permitted ? mm->end_code : 1) : 0));
63195+ seq_put_decimal_ull(m, ' ', PAX_RAND_FLAGS(mm) ? 0 : ((permitted && mm) ? mm->start_stack : 0));
63196+#else
63197 seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->start_code : 1) : 0);
63198 seq_put_decimal_ull(m, ' ', mm ? (permitted ? mm->end_code : 1) : 0);
63199 seq_put_decimal_ull(m, ' ', (permitted && mm) ? mm->start_stack : 0);
63200+#endif
63201 seq_put_decimal_ull(m, ' ', esp);
63202 seq_put_decimal_ull(m, ' ', eip);
63203 /* The signal information here is obsolete.
63204@@ -528,7 +585,11 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
63205 seq_put_decimal_ull(m, ' ', cputime_to_clock_t(gtime));
63206 seq_put_decimal_ll(m, ' ', cputime_to_clock_t(cgtime));
63207
63208- if (mm && permitted) {
63209+ if (mm && permitted
63210+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
63211+ && !PAX_RAND_FLAGS(mm)
63212+#endif
63213+ ) {
63214 seq_put_decimal_ull(m, ' ', mm->start_data);
63215 seq_put_decimal_ull(m, ' ', mm->end_data);
63216 seq_put_decimal_ull(m, ' ', mm->start_brk);
63217@@ -566,8 +627,15 @@ int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
63218 struct pid *pid, struct task_struct *task)
63219 {
63220 unsigned long size = 0, resident = 0, shared = 0, text = 0, data = 0;
63221- struct mm_struct *mm = get_task_mm(task);
63222+ struct mm_struct *mm;
63223
63224+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
63225+ if (current->exec_id != m->exec_id) {
63226+ gr_log_badprocpid("statm");
63227+ return 0;
63228+ }
63229+#endif
63230+ mm = get_task_mm(task);
63231 if (mm) {
63232 size = task_statm(mm, &shared, &text, &data, &resident);
63233 mmput(mm);
63234@@ -590,6 +658,13 @@ int proc_pid_statm(struct seq_file *m, struct pid_namespace *ns,
63235 return 0;
63236 }
63237
63238+#ifdef CONFIG_GRKERNSEC_PROC_IPADDR
63239+int proc_pid_ipaddr(struct task_struct *task, char *buffer)
63240+{
63241+ return sprintf(buffer, "%pI4\n", &task->signal->curr_ip);
63242+}
63243+#endif
63244+
63245 #ifdef CONFIG_CHECKPOINT_RESTORE
63246 static struct pid *
63247 get_children_pid(struct inode *inode, struct pid *pid_prev, loff_t pos)
63248diff --git a/fs/proc/base.c b/fs/proc/base.c
63249index 2d696b0..b9da447 100644
63250--- a/fs/proc/base.c
63251+++ b/fs/proc/base.c
63252@@ -113,6 +113,14 @@ struct pid_entry {
63253 union proc_op op;
63254 };
63255
63256+struct getdents_callback {
63257+ struct linux_dirent __user * current_dir;
63258+ struct linux_dirent __user * previous;
63259+ struct file * file;
63260+ int count;
63261+ int error;
63262+};
63263+
63264 #define NOD(NAME, MODE, IOP, FOP, OP) { \
63265 .name = (NAME), \
63266 .len = sizeof(NAME) - 1, \
63267@@ -205,12 +213,28 @@ static int proc_pid_cmdline(struct task_struct *task, char *buffer)
63268 return get_cmdline(task, buffer, PAGE_SIZE);
63269 }
63270
63271+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
63272+#define PAX_RAND_FLAGS(_mm) (_mm != NULL && _mm != current->mm && \
63273+ (_mm->pax_flags & MF_PAX_RANDMMAP || \
63274+ _mm->pax_flags & MF_PAX_SEGMEXEC))
63275+#endif
63276+
63277 static int proc_pid_auxv(struct task_struct *task, char *buffer)
63278 {
63279 struct mm_struct *mm = mm_access(task, PTRACE_MODE_READ);
63280 int res = PTR_ERR(mm);
63281 if (mm && !IS_ERR(mm)) {
63282 unsigned int nwords = 0;
63283+
63284+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
63285+ /* allow if we're currently ptracing this task */
63286+ if (PAX_RAND_FLAGS(mm) &&
63287+ (!(task->ptrace & PT_PTRACED) || (task->parent != current))) {
63288+ mmput(mm);
63289+ return 0;
63290+ }
63291+#endif
63292+
63293 do {
63294 nwords += 2;
63295 } while (mm->saved_auxv[nwords - 2] != 0); /* AT_NULL */
63296@@ -224,7 +248,7 @@ static int proc_pid_auxv(struct task_struct *task, char *buffer)
63297 }
63298
63299
63300-#ifdef CONFIG_KALLSYMS
63301+#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM)
63302 /*
63303 * Provides a wchan file via kallsyms in a proper one-value-per-file format.
63304 * Returns the resolved symbol. If that fails, simply return the address.
63305@@ -263,7 +287,7 @@ static void unlock_trace(struct task_struct *task)
63306 mutex_unlock(&task->signal->cred_guard_mutex);
63307 }
63308
63309-#ifdef CONFIG_STACKTRACE
63310+#if defined(CONFIG_STACKTRACE) && !defined(CONFIG_GRKERNSEC_HIDESYM)
63311
63312 #define MAX_STACK_TRACE_DEPTH 64
63313
63314@@ -486,7 +510,7 @@ static int proc_pid_limits(struct task_struct *task, char *buffer)
63315 return count;
63316 }
63317
63318-#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
63319+#if defined(CONFIG_HAVE_ARCH_TRACEHOOK) && !defined(CONFIG_GRKERNSEC_PROC_MEMMAP)
63320 static int proc_pid_syscall(struct task_struct *task, char *buffer)
63321 {
63322 long nr;
63323@@ -515,7 +539,7 @@ static int proc_pid_syscall(struct task_struct *task, char *buffer)
63324 /************************************************************************/
63325
63326 /* permission checks */
63327-static int proc_fd_access_allowed(struct inode *inode)
63328+static int proc_fd_access_allowed(struct inode *inode, unsigned int log)
63329 {
63330 struct task_struct *task;
63331 int allowed = 0;
63332@@ -525,7 +549,10 @@ static int proc_fd_access_allowed(struct inode *inode)
63333 */
63334 task = get_proc_task(inode);
63335 if (task) {
63336- allowed = ptrace_may_access(task, PTRACE_MODE_READ);
63337+ if (log)
63338+ allowed = ptrace_may_access(task, PTRACE_MODE_READ);
63339+ else
63340+ allowed = ptrace_may_access(task, PTRACE_MODE_READ | PTRACE_MODE_NOAUDIT);
63341 put_task_struct(task);
63342 }
63343 return allowed;
63344@@ -556,10 +583,35 @@ static bool has_pid_permissions(struct pid_namespace *pid,
63345 struct task_struct *task,
63346 int hide_pid_min)
63347 {
63348+ if (gr_pid_is_chrooted(task) || gr_check_hidden_task(task))
63349+ return false;
63350+
63351+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
63352+ rcu_read_lock();
63353+ {
63354+ const struct cred *tmpcred = current_cred();
63355+ const struct cred *cred = __task_cred(task);
63356+
63357+ if (uid_eq(tmpcred->uid, GLOBAL_ROOT_UID) || uid_eq(tmpcred->uid, cred->uid)
63358+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
63359+ || in_group_p(grsec_proc_gid)
63360+#endif
63361+ ) {
63362+ rcu_read_unlock();
63363+ return true;
63364+ }
63365+ }
63366+ rcu_read_unlock();
63367+
63368+ if (!pid->hide_pid)
63369+ return false;
63370+#endif
63371+
63372 if (pid->hide_pid < hide_pid_min)
63373 return true;
63374 if (in_group_p(pid->pid_gid))
63375 return true;
63376+
63377 return ptrace_may_access(task, PTRACE_MODE_READ);
63378 }
63379
63380@@ -577,7 +629,11 @@ static int proc_pid_permission(struct inode *inode, int mask)
63381 put_task_struct(task);
63382
63383 if (!has_perms) {
63384+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
63385+ {
63386+#else
63387 if (pid->hide_pid == 2) {
63388+#endif
63389 /*
63390 * Let's make getdents(), stat(), and open()
63391 * consistent with each other. If a process
63392@@ -675,6 +731,11 @@ static int __mem_open(struct inode *inode, struct file *file, unsigned int mode)
63393 if (!task)
63394 return -ESRCH;
63395
63396+ if (gr_acl_handle_procpidmem(task)) {
63397+ put_task_struct(task);
63398+ return -EPERM;
63399+ }
63400+
63401 mm = mm_access(task, mode);
63402 put_task_struct(task);
63403
63404@@ -690,6 +751,10 @@ static int __mem_open(struct inode *inode, struct file *file, unsigned int mode)
63405
63406 file->private_data = mm;
63407
63408+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
63409+ file->f_version = current->exec_id;
63410+#endif
63411+
63412 return 0;
63413 }
63414
63415@@ -711,6 +776,17 @@ static ssize_t mem_rw(struct file *file, char __user *buf,
63416 ssize_t copied;
63417 char *page;
63418
63419+#ifdef CONFIG_GRKERNSEC
63420+ if (write)
63421+ return -EPERM;
63422+#endif
63423+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
63424+ if (file->f_version != current->exec_id) {
63425+ gr_log_badprocpid("mem");
63426+ return 0;
63427+ }
63428+#endif
63429+
63430 if (!mm)
63431 return 0;
63432
63433@@ -723,7 +799,7 @@ static ssize_t mem_rw(struct file *file, char __user *buf,
63434 goto free;
63435
63436 while (count > 0) {
63437- int this_len = min_t(int, count, PAGE_SIZE);
63438+ ssize_t this_len = min_t(ssize_t, count, PAGE_SIZE);
63439
63440 if (write && copy_from_user(page, buf, this_len)) {
63441 copied = -EFAULT;
63442@@ -815,6 +891,13 @@ static ssize_t environ_read(struct file *file, char __user *buf,
63443 if (!mm)
63444 return 0;
63445
63446+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
63447+ if (file->f_version != current->exec_id) {
63448+ gr_log_badprocpid("environ");
63449+ return 0;
63450+ }
63451+#endif
63452+
63453 page = (char *)__get_free_page(GFP_TEMPORARY);
63454 if (!page)
63455 return -ENOMEM;
63456@@ -824,7 +907,7 @@ static ssize_t environ_read(struct file *file, char __user *buf,
63457 goto free;
63458 while (count > 0) {
63459 size_t this_len, max_len;
63460- int retval;
63461+ ssize_t retval;
63462
63463 if (src >= (mm->env_end - mm->env_start))
63464 break;
63465@@ -1438,7 +1521,7 @@ static void *proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
63466 int error = -EACCES;
63467
63468 /* Are we allowed to snoop on the tasks file descriptors? */
63469- if (!proc_fd_access_allowed(inode))
63470+ if (!proc_fd_access_allowed(inode, 0))
63471 goto out;
63472
63473 error = PROC_I(inode)->op.proc_get_link(dentry, &path);
63474@@ -1482,8 +1565,18 @@ static int proc_pid_readlink(struct dentry * dentry, char __user * buffer, int b
63475 struct path path;
63476
63477 /* Are we allowed to snoop on the tasks file descriptors? */
63478- if (!proc_fd_access_allowed(inode))
63479- goto out;
63480+ /* logging this is needed for learning on chromium to work properly,
63481+ but we don't want to flood the logs from 'ps' which does a readlink
63482+ on /proc/fd/2 of tasks in the listing, nor do we want 'ps' to learn
63483+ CAP_SYS_PTRACE as it's not necessary for its basic functionality
63484+ */
63485+ if (dentry->d_name.name[0] == '2' && dentry->d_name.name[1] == '\0') {
63486+ if (!proc_fd_access_allowed(inode,0))
63487+ goto out;
63488+ } else {
63489+ if (!proc_fd_access_allowed(inode,1))
63490+ goto out;
63491+ }
63492
63493 error = PROC_I(inode)->op.proc_get_link(dentry, &path);
63494 if (error)
63495@@ -1533,7 +1626,11 @@ struct inode *proc_pid_make_inode(struct super_block * sb, struct task_struct *t
63496 rcu_read_lock();
63497 cred = __task_cred(task);
63498 inode->i_uid = cred->euid;
63499+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
63500+ inode->i_gid = grsec_proc_gid;
63501+#else
63502 inode->i_gid = cred->egid;
63503+#endif
63504 rcu_read_unlock();
63505 }
63506 security_task_to_inode(task, inode);
63507@@ -1569,10 +1666,19 @@ int pid_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
63508 return -ENOENT;
63509 }
63510 if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
63511+#ifdef CONFIG_GRKERNSEC_PROC_USER
63512+ (inode->i_mode == (S_IFDIR|S_IRUSR|S_IXUSR)) ||
63513+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
63514+ (inode->i_mode == (S_IFDIR|S_IRUSR|S_IRGRP|S_IXUSR|S_IXGRP)) ||
63515+#endif
63516 task_dumpable(task)) {
63517 cred = __task_cred(task);
63518 stat->uid = cred->euid;
63519+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
63520+ stat->gid = grsec_proc_gid;
63521+#else
63522 stat->gid = cred->egid;
63523+#endif
63524 }
63525 }
63526 rcu_read_unlock();
63527@@ -1610,11 +1716,20 @@ int pid_revalidate(struct dentry *dentry, unsigned int flags)
63528
63529 if (task) {
63530 if ((inode->i_mode == (S_IFDIR|S_IRUGO|S_IXUGO)) ||
63531+#ifdef CONFIG_GRKERNSEC_PROC_USER
63532+ (inode->i_mode == (S_IFDIR|S_IRUSR|S_IXUSR)) ||
63533+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
63534+ (inode->i_mode == (S_IFDIR|S_IRUSR|S_IRGRP|S_IXUSR|S_IXGRP)) ||
63535+#endif
63536 task_dumpable(task)) {
63537 rcu_read_lock();
63538 cred = __task_cred(task);
63539 inode->i_uid = cred->euid;
63540+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
63541+ inode->i_gid = grsec_proc_gid;
63542+#else
63543 inode->i_gid = cred->egid;
63544+#endif
63545 rcu_read_unlock();
63546 } else {
63547 inode->i_uid = GLOBAL_ROOT_UID;
63548@@ -2149,6 +2264,9 @@ static struct dentry *proc_pident_lookup(struct inode *dir,
63549 if (!task)
63550 goto out_no_task;
63551
63552+ if (gr_pid_is_chrooted(task) || gr_check_hidden_task(task))
63553+ goto out;
63554+
63555 /*
63556 * Yes, it does not scale. And it should not. Don't add
63557 * new entries into /proc/<tgid>/ without very good reasons.
63558@@ -2179,6 +2297,9 @@ static int proc_pident_readdir(struct file *file, struct dir_context *ctx,
63559 if (!task)
63560 return -ENOENT;
63561
63562+ if (gr_pid_is_chrooted(task) || gr_check_hidden_task(task))
63563+ goto out;
63564+
63565 if (!dir_emit_dots(file, ctx))
63566 goto out;
63567
63568@@ -2568,7 +2689,7 @@ static const struct pid_entry tgid_base_stuff[] = {
63569 REG("autogroup", S_IRUGO|S_IWUSR, proc_pid_sched_autogroup_operations),
63570 #endif
63571 REG("comm", S_IRUGO|S_IWUSR, proc_pid_set_comm_operations),
63572-#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
63573+#if defined(CONFIG_HAVE_ARCH_TRACEHOOK) && !defined(CONFIG_GRKERNSEC_PROC_MEMMAP)
63574 INF("syscall", S_IRUSR, proc_pid_syscall),
63575 #endif
63576 INF("cmdline", S_IRUGO, proc_pid_cmdline),
63577@@ -2593,10 +2714,10 @@ static const struct pid_entry tgid_base_stuff[] = {
63578 #ifdef CONFIG_SECURITY
63579 DIR("attr", S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations),
63580 #endif
63581-#ifdef CONFIG_KALLSYMS
63582+#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM)
63583 INF("wchan", S_IRUGO, proc_pid_wchan),
63584 #endif
63585-#ifdef CONFIG_STACKTRACE
63586+#if defined(CONFIG_STACKTRACE) && !defined(CONFIG_GRKERNSEC_HIDESYM)
63587 ONE("stack", S_IRUSR, proc_pid_stack),
63588 #endif
63589 #ifdef CONFIG_SCHEDSTATS
63590@@ -2630,6 +2751,9 @@ static const struct pid_entry tgid_base_stuff[] = {
63591 #ifdef CONFIG_HARDWALL
63592 INF("hardwall", S_IRUGO, proc_pid_hardwall),
63593 #endif
63594+#ifdef CONFIG_GRKERNSEC_PROC_IPADDR
63595+ INF("ipaddr", S_IRUSR, proc_pid_ipaddr),
63596+#endif
63597 #ifdef CONFIG_USER_NS
63598 REG("uid_map", S_IRUGO|S_IWUSR, proc_uid_map_operations),
63599 REG("gid_map", S_IRUGO|S_IWUSR, proc_gid_map_operations),
63600@@ -2760,7 +2884,14 @@ static int proc_pid_instantiate(struct inode *dir,
63601 if (!inode)
63602 goto out;
63603
63604+#ifdef CONFIG_GRKERNSEC_PROC_USER
63605+ inode->i_mode = S_IFDIR|S_IRUSR|S_IXUSR;
63606+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
63607+ inode->i_gid = grsec_proc_gid;
63608+ inode->i_mode = S_IFDIR|S_IRUSR|S_IRGRP|S_IXUSR|S_IXGRP;
63609+#else
63610 inode->i_mode = S_IFDIR|S_IRUGO|S_IXUGO;
63611+#endif
63612 inode->i_op = &proc_tgid_base_inode_operations;
63613 inode->i_fop = &proc_tgid_base_operations;
63614 inode->i_flags|=S_IMMUTABLE;
63615@@ -2798,7 +2929,11 @@ struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, unsign
63616 if (!task)
63617 goto out;
63618
63619+ if (gr_pid_is_chrooted(task) || gr_check_hidden_task(task))
63620+ goto out_put_task;
63621+
63622 result = proc_pid_instantiate(dir, dentry, task, NULL);
63623+out_put_task:
63624 put_task_struct(task);
63625 out:
63626 return ERR_PTR(result);
63627@@ -2904,7 +3039,7 @@ static const struct pid_entry tid_base_stuff[] = {
63628 REG("sched", S_IRUGO|S_IWUSR, proc_pid_sched_operations),
63629 #endif
63630 REG("comm", S_IRUGO|S_IWUSR, proc_pid_set_comm_operations),
63631-#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
63632+#if defined(CONFIG_HAVE_ARCH_TRACEHOOK) && !defined(CONFIG_GRKERNSEC_PROC_MEMMAP)
63633 INF("syscall", S_IRUSR, proc_pid_syscall),
63634 #endif
63635 INF("cmdline", S_IRUGO, proc_pid_cmdline),
63636@@ -2931,10 +3066,10 @@ static const struct pid_entry tid_base_stuff[] = {
63637 #ifdef CONFIG_SECURITY
63638 DIR("attr", S_IRUGO|S_IXUGO, proc_attr_dir_inode_operations, proc_attr_dir_operations),
63639 #endif
63640-#ifdef CONFIG_KALLSYMS
63641+#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM)
63642 INF("wchan", S_IRUGO, proc_pid_wchan),
63643 #endif
63644-#ifdef CONFIG_STACKTRACE
63645+#if defined(CONFIG_STACKTRACE) && !defined(CONFIG_GRKERNSEC_HIDESYM)
63646 ONE("stack", S_IRUSR, proc_pid_stack),
63647 #endif
63648 #ifdef CONFIG_SCHEDSTATS
63649diff --git a/fs/proc/cmdline.c b/fs/proc/cmdline.c
63650index cbd82df..c0407d2 100644
63651--- a/fs/proc/cmdline.c
63652+++ b/fs/proc/cmdline.c
63653@@ -23,7 +23,11 @@ static const struct file_operations cmdline_proc_fops = {
63654
63655 static int __init proc_cmdline_init(void)
63656 {
63657+#ifdef CONFIG_GRKERNSEC_PROC_ADD
63658+ proc_create_grsec("cmdline", 0, NULL, &cmdline_proc_fops);
63659+#else
63660 proc_create("cmdline", 0, NULL, &cmdline_proc_fops);
63661+#endif
63662 return 0;
63663 }
63664 fs_initcall(proc_cmdline_init);
63665diff --git a/fs/proc/devices.c b/fs/proc/devices.c
63666index 50493ed..248166b 100644
63667--- a/fs/proc/devices.c
63668+++ b/fs/proc/devices.c
63669@@ -64,7 +64,11 @@ static const struct file_operations proc_devinfo_operations = {
63670
63671 static int __init proc_devices_init(void)
63672 {
63673+#ifdef CONFIG_GRKERNSEC_PROC_ADD
63674+ proc_create_grsec("devices", 0, NULL, &proc_devinfo_operations);
63675+#else
63676 proc_create("devices", 0, NULL, &proc_devinfo_operations);
63677+#endif
63678 return 0;
63679 }
63680 fs_initcall(proc_devices_init);
63681diff --git a/fs/proc/fd.c b/fs/proc/fd.c
63682index 0788d09..9cc1385 100644
63683--- a/fs/proc/fd.c
63684+++ b/fs/proc/fd.c
63685@@ -26,7 +26,8 @@ static int seq_show(struct seq_file *m, void *v)
63686 if (!task)
63687 return -ENOENT;
63688
63689- files = get_files_struct(task);
63690+ if (!gr_acl_handle_procpidmem(task))
63691+ files = get_files_struct(task);
63692 put_task_struct(task);
63693
63694 if (files) {
63695@@ -285,11 +286,21 @@ static struct dentry *proc_lookupfd(struct inode *dir, struct dentry *dentry,
63696 */
63697 int proc_fd_permission(struct inode *inode, int mask)
63698 {
63699+ struct task_struct *task;
63700 int rv = generic_permission(inode, mask);
63701- if (rv == 0)
63702- return 0;
63703+
63704 if (task_tgid(current) == proc_pid(inode))
63705 rv = 0;
63706+
63707+ task = get_proc_task(inode);
63708+ if (task == NULL)
63709+ return rv;
63710+
63711+ if (gr_acl_handle_procpidmem(task))
63712+ rv = -EACCES;
63713+
63714+ put_task_struct(task);
63715+
63716 return rv;
63717 }
63718
63719diff --git a/fs/proc/generic.c b/fs/proc/generic.c
63720index b7f268e..3bea6b7 100644
63721--- a/fs/proc/generic.c
63722+++ b/fs/proc/generic.c
63723@@ -23,6 +23,7 @@
63724 #include <linux/bitops.h>
63725 #include <linux/spinlock.h>
63726 #include <linux/completion.h>
63727+#include <linux/grsecurity.h>
63728 #include <asm/uaccess.h>
63729
63730 #include "internal.h"
63731@@ -207,6 +208,15 @@ struct dentry *proc_lookup(struct inode *dir, struct dentry *dentry,
63732 return proc_lookup_de(PDE(dir), dir, dentry);
63733 }
63734
63735+struct dentry *proc_lookup_restrict(struct inode *dir, struct dentry *dentry,
63736+ unsigned int flags)
63737+{
63738+ if (gr_proc_is_restricted())
63739+ return ERR_PTR(-EACCES);
63740+
63741+ return proc_lookup_de(PDE(dir), dir, dentry);
63742+}
63743+
63744 /*
63745 * This returns non-zero if at EOF, so that the /proc
63746 * root directory can use this and check if it should
63747@@ -264,6 +274,16 @@ int proc_readdir(struct file *file, struct dir_context *ctx)
63748 return proc_readdir_de(PDE(inode), file, ctx);
63749 }
63750
63751+int proc_readdir_restrict(struct file *file, struct dir_context *ctx)
63752+{
63753+ struct inode *inode = file_inode(file);
63754+
63755+ if (gr_proc_is_restricted())
63756+ return -EACCES;
63757+
63758+ return proc_readdir_de(PDE(inode), file, ctx);
63759+}
63760+
63761 /*
63762 * These are the generic /proc directory operations. They
63763 * use the in-memory "struct proc_dir_entry" tree to parse
63764@@ -275,6 +295,12 @@ static const struct file_operations proc_dir_operations = {
63765 .iterate = proc_readdir,
63766 };
63767
63768+static const struct file_operations proc_dir_restricted_operations = {
63769+ .llseek = generic_file_llseek,
63770+ .read = generic_read_dir,
63771+ .iterate = proc_readdir_restrict,
63772+};
63773+
63774 /*
63775 * proc directories can do almost nothing..
63776 */
63777@@ -284,6 +310,12 @@ static const struct inode_operations proc_dir_inode_operations = {
63778 .setattr = proc_notify_change,
63779 };
63780
63781+static const struct inode_operations proc_dir_restricted_inode_operations = {
63782+ .lookup = proc_lookup_restrict,
63783+ .getattr = proc_getattr,
63784+ .setattr = proc_notify_change,
63785+};
63786+
63787 static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp)
63788 {
63789 struct proc_dir_entry *tmp;
63790@@ -294,8 +326,13 @@ static int proc_register(struct proc_dir_entry * dir, struct proc_dir_entry * dp
63791 return ret;
63792
63793 if (S_ISDIR(dp->mode)) {
63794- dp->proc_fops = &proc_dir_operations;
63795- dp->proc_iops = &proc_dir_inode_operations;
63796+ if (dp->restricted) {
63797+ dp->proc_fops = &proc_dir_restricted_operations;
63798+ dp->proc_iops = &proc_dir_restricted_inode_operations;
63799+ } else {
63800+ dp->proc_fops = &proc_dir_operations;
63801+ dp->proc_iops = &proc_dir_inode_operations;
63802+ }
63803 dir->nlink++;
63804 } else if (S_ISLNK(dp->mode)) {
63805 dp->proc_iops = &proc_link_inode_operations;
63806@@ -407,6 +444,27 @@ struct proc_dir_entry *proc_mkdir_data(const char *name, umode_t mode,
63807 }
63808 EXPORT_SYMBOL_GPL(proc_mkdir_data);
63809
63810+struct proc_dir_entry *proc_mkdir_data_restrict(const char *name, umode_t mode,
63811+ struct proc_dir_entry *parent, void *data)
63812+{
63813+ struct proc_dir_entry *ent;
63814+
63815+ if (mode == 0)
63816+ mode = S_IRUGO | S_IXUGO;
63817+
63818+ ent = __proc_create(&parent, name, S_IFDIR | mode, 2);
63819+ if (ent) {
63820+ ent->data = data;
63821+ ent->restricted = 1;
63822+ if (proc_register(parent, ent) < 0) {
63823+ kfree(ent);
63824+ ent = NULL;
63825+ }
63826+ }
63827+ return ent;
63828+}
63829+EXPORT_SYMBOL_GPL(proc_mkdir_data_restrict);
63830+
63831 struct proc_dir_entry *proc_mkdir_mode(const char *name, umode_t mode,
63832 struct proc_dir_entry *parent)
63833 {
63834@@ -421,6 +479,13 @@ struct proc_dir_entry *proc_mkdir(const char *name,
63835 }
63836 EXPORT_SYMBOL(proc_mkdir);
63837
63838+struct proc_dir_entry *proc_mkdir_restrict(const char *name,
63839+ struct proc_dir_entry *parent)
63840+{
63841+ return proc_mkdir_data_restrict(name, 0, parent, NULL);
63842+}
63843+EXPORT_SYMBOL(proc_mkdir_restrict);
63844+
63845 struct proc_dir_entry *proc_create_data(const char *name, umode_t mode,
63846 struct proc_dir_entry *parent,
63847 const struct file_operations *proc_fops,
63848diff --git a/fs/proc/inode.c b/fs/proc/inode.c
63849index 0adbc02..bee4d0b 100644
63850--- a/fs/proc/inode.c
63851+++ b/fs/proc/inode.c
63852@@ -23,11 +23,17 @@
63853 #include <linux/slab.h>
63854 #include <linux/mount.h>
63855 #include <linux/magic.h>
63856+#include <linux/grsecurity.h>
63857
63858 #include <asm/uaccess.h>
63859
63860 #include "internal.h"
63861
63862+#ifdef CONFIG_PROC_SYSCTL
63863+extern const struct inode_operations proc_sys_inode_operations;
63864+extern const struct inode_operations proc_sys_dir_operations;
63865+#endif
63866+
63867 static void proc_evict_inode(struct inode *inode)
63868 {
63869 struct proc_dir_entry *de;
63870@@ -55,6 +61,13 @@ static void proc_evict_inode(struct inode *inode)
63871 ns = PROC_I(inode)->ns.ns;
63872 if (ns_ops && ns)
63873 ns_ops->put(ns);
63874+
63875+#ifdef CONFIG_PROC_SYSCTL
63876+ if (inode->i_op == &proc_sys_inode_operations ||
63877+ inode->i_op == &proc_sys_dir_operations)
63878+ gr_handle_delete(inode->i_ino, inode->i_sb->s_dev);
63879+#endif
63880+
63881 }
63882
63883 static struct kmem_cache * proc_inode_cachep;
63884@@ -413,7 +426,11 @@ struct inode *proc_get_inode(struct super_block *sb, struct proc_dir_entry *de)
63885 if (de->mode) {
63886 inode->i_mode = de->mode;
63887 inode->i_uid = de->uid;
63888+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
63889+ inode->i_gid = grsec_proc_gid;
63890+#else
63891 inode->i_gid = de->gid;
63892+#endif
63893 }
63894 if (de->size)
63895 inode->i_size = de->size;
63896diff --git a/fs/proc/internal.h b/fs/proc/internal.h
63897index 3ab6d14..b26174e 100644
63898--- a/fs/proc/internal.h
63899+++ b/fs/proc/internal.h
63900@@ -46,9 +46,10 @@ struct proc_dir_entry {
63901 struct completion *pde_unload_completion;
63902 struct list_head pde_openers; /* who did ->open, but not ->release */
63903 spinlock_t pde_unload_lock; /* proc_fops checks and pde_users bumps */
63904+ u8 restricted; /* a directory in /proc/net that should be restricted via GRKERNSEC_PROC */
63905 u8 namelen;
63906 char name[];
63907-};
63908+} __randomize_layout;
63909
63910 union proc_op {
63911 int (*proc_get_link)(struct dentry *, struct path *);
63912@@ -67,7 +68,7 @@ struct proc_inode {
63913 struct ctl_table *sysctl_entry;
63914 struct proc_ns ns;
63915 struct inode vfs_inode;
63916-};
63917+} __randomize_layout;
63918
63919 /*
63920 * General functions
63921@@ -155,6 +156,9 @@ extern int proc_pid_status(struct seq_file *, struct pid_namespace *,
63922 struct pid *, struct task_struct *);
63923 extern int proc_pid_statm(struct seq_file *, struct pid_namespace *,
63924 struct pid *, struct task_struct *);
63925+#ifdef CONFIG_GRKERNSEC_PROC_IPADDR
63926+extern int proc_pid_ipaddr(struct task_struct *task, char *buffer);
63927+#endif
63928
63929 /*
63930 * base.c
63931@@ -181,9 +185,11 @@ extern bool proc_fill_cache(struct file *, struct dir_context *, const char *, i
63932 extern spinlock_t proc_subdir_lock;
63933
63934 extern struct dentry *proc_lookup(struct inode *, struct dentry *, unsigned int);
63935+extern struct dentry *proc_lookup_restrict(struct inode *, struct dentry *, unsigned int);
63936 extern struct dentry *proc_lookup_de(struct proc_dir_entry *, struct inode *,
63937 struct dentry *);
63938 extern int proc_readdir(struct file *, struct dir_context *);
63939+extern int proc_readdir_restrict(struct file *, struct dir_context *);
63940 extern int proc_readdir_de(struct proc_dir_entry *, struct file *, struct dir_context *);
63941
63942 static inline struct proc_dir_entry *pde_get(struct proc_dir_entry *pde)
63943diff --git a/fs/proc/interrupts.c b/fs/proc/interrupts.c
63944index a352d57..cb94a5c 100644
63945--- a/fs/proc/interrupts.c
63946+++ b/fs/proc/interrupts.c
63947@@ -47,7 +47,11 @@ static const struct file_operations proc_interrupts_operations = {
63948
63949 static int __init proc_interrupts_init(void)
63950 {
63951+#ifdef CONFIG_GRKERNSEC_PROC_ADD
63952+ proc_create_grsec("interrupts", 0, NULL, &proc_interrupts_operations);
63953+#else
63954 proc_create("interrupts", 0, NULL, &proc_interrupts_operations);
63955+#endif
63956 return 0;
63957 }
63958 fs_initcall(proc_interrupts_init);
63959diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
63960index 39e6ef3..2f9cb5e 100644
63961--- a/fs/proc/kcore.c
63962+++ b/fs/proc/kcore.c
63963@@ -483,9 +483,10 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos)
63964 * the addresses in the elf_phdr on our list.
63965 */
63966 start = kc_offset_to_vaddr(*fpos - elf_buflen);
63967- if ((tsz = (PAGE_SIZE - (start & ~PAGE_MASK))) > buflen)
63968+ tsz = PAGE_SIZE - (start & ~PAGE_MASK);
63969+ if (tsz > buflen)
63970 tsz = buflen;
63971-
63972+
63973 while (buflen) {
63974 struct kcore_list *m;
63975
63976@@ -514,20 +515,23 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos)
63977 kfree(elf_buf);
63978 } else {
63979 if (kern_addr_valid(start)) {
63980- unsigned long n;
63981+ char *elf_buf;
63982+ mm_segment_t oldfs;
63983
63984- n = copy_to_user(buffer, (char *)start, tsz);
63985- /*
63986- * We cannot distinguish between fault on source
63987- * and fault on destination. When this happens
63988- * we clear too and hope it will trigger the
63989- * EFAULT again.
63990- */
63991- if (n) {
63992- if (clear_user(buffer + tsz - n,
63993- n))
63994+ elf_buf = kmalloc(tsz, GFP_KERNEL);
63995+ if (!elf_buf)
63996+ return -ENOMEM;
63997+ oldfs = get_fs();
63998+ set_fs(KERNEL_DS);
63999+ if (!__copy_from_user(elf_buf, (const void __user *)start, tsz)) {
64000+ set_fs(oldfs);
64001+ if (copy_to_user(buffer, elf_buf, tsz)) {
64002+ kfree(elf_buf);
64003 return -EFAULT;
64004+ }
64005 }
64006+ set_fs(oldfs);
64007+ kfree(elf_buf);
64008 } else {
64009 if (clear_user(buffer, tsz))
64010 return -EFAULT;
64011@@ -547,6 +551,9 @@ read_kcore(struct file *file, char __user *buffer, size_t buflen, loff_t *fpos)
64012
64013 static int open_kcore(struct inode *inode, struct file *filp)
64014 {
64015+#if defined(CONFIG_GRKERNSEC_PROC_ADD) || defined(CONFIG_GRKERNSEC_HIDESYM)
64016+ return -EPERM;
64017+#endif
64018 if (!capable(CAP_SYS_RAWIO))
64019 return -EPERM;
64020 if (kcore_need_update)
64021diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
64022index 7445af0..7c5113c 100644
64023--- a/fs/proc/meminfo.c
64024+++ b/fs/proc/meminfo.c
64025@@ -187,7 +187,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v)
64026 vmi.used >> 10,
64027 vmi.largest_chunk >> 10
64028 #ifdef CONFIG_MEMORY_FAILURE
64029- ,atomic_long_read(&num_poisoned_pages) << (PAGE_SHIFT - 10)
64030+ ,atomic_long_read_unchecked(&num_poisoned_pages) << (PAGE_SHIFT - 10)
64031 #endif
64032 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
64033 ,K(global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *
64034diff --git a/fs/proc/nommu.c b/fs/proc/nommu.c
64035index d4a3574..b421ce9 100644
64036--- a/fs/proc/nommu.c
64037+++ b/fs/proc/nommu.c
64038@@ -64,7 +64,7 @@ static int nommu_region_show(struct seq_file *m, struct vm_region *region)
64039
64040 if (file) {
64041 seq_pad(m, ' ');
64042- seq_path(m, &file->f_path, "");
64043+ seq_path(m, &file->f_path, "\n\\");
64044 }
64045
64046 seq_putc(m, '\n');
64047diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c
64048index 4677bb7..94067cd 100644
64049--- a/fs/proc/proc_net.c
64050+++ b/fs/proc/proc_net.c
64051@@ -23,6 +23,7 @@
64052 #include <linux/nsproxy.h>
64053 #include <net/net_namespace.h>
64054 #include <linux/seq_file.h>
64055+#include <linux/grsecurity.h>
64056
64057 #include "internal.h"
64058
64059@@ -36,6 +37,8 @@ static struct net *get_proc_net(const struct inode *inode)
64060 return maybe_get_net(PDE_NET(PDE(inode)));
64061 }
64062
64063+extern const struct seq_operations dev_seq_ops;
64064+
64065 int seq_open_net(struct inode *ino, struct file *f,
64066 const struct seq_operations *ops, int size)
64067 {
64068@@ -44,6 +47,10 @@ int seq_open_net(struct inode *ino, struct file *f,
64069
64070 BUG_ON(size < sizeof(*p));
64071
64072+ /* only permit access to /proc/net/dev */
64073+ if (ops != &dev_seq_ops && gr_proc_is_restricted())
64074+ return -EACCES;
64075+
64076 net = get_proc_net(ino);
64077 if (net == NULL)
64078 return -ENXIO;
64079@@ -66,6 +73,9 @@ int single_open_net(struct inode *inode, struct file *file,
64080 int err;
64081 struct net *net;
64082
64083+ if (gr_proc_is_restricted())
64084+ return -EACCES;
64085+
64086 err = -ENXIO;
64087 net = get_proc_net(inode);
64088 if (net == NULL)
64089diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
64090index 7129046..6914844 100644
64091--- a/fs/proc/proc_sysctl.c
64092+++ b/fs/proc/proc_sysctl.c
64093@@ -11,13 +11,21 @@
64094 #include <linux/namei.h>
64095 #include <linux/mm.h>
64096 #include <linux/module.h>
64097+#include <linux/nsproxy.h>
64098+#ifdef CONFIG_GRKERNSEC
64099+#include <net/net_namespace.h>
64100+#endif
64101 #include "internal.h"
64102
64103+extern int gr_handle_chroot_sysctl(const int op);
64104+extern int gr_handle_sysctl_mod(const char *dirname, const char *name,
64105+ const int op);
64106+
64107 static const struct dentry_operations proc_sys_dentry_operations;
64108 static const struct file_operations proc_sys_file_operations;
64109-static const struct inode_operations proc_sys_inode_operations;
64110+const struct inode_operations proc_sys_inode_operations;
64111 static const struct file_operations proc_sys_dir_file_operations;
64112-static const struct inode_operations proc_sys_dir_operations;
64113+const struct inode_operations proc_sys_dir_operations;
64114
64115 void proc_sys_poll_notify(struct ctl_table_poll *poll)
64116 {
64117@@ -467,6 +475,9 @@ static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry,
64118
64119 err = NULL;
64120 d_set_d_op(dentry, &proc_sys_dentry_operations);
64121+
64122+ gr_handle_proc_create(dentry, inode);
64123+
64124 d_add(dentry, inode);
64125
64126 out:
64127@@ -482,6 +493,7 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
64128 struct inode *inode = file_inode(filp);
64129 struct ctl_table_header *head = grab_header(inode);
64130 struct ctl_table *table = PROC_I(inode)->sysctl_entry;
64131+ int op = write ? MAY_WRITE : MAY_READ;
64132 ssize_t error;
64133 size_t res;
64134
64135@@ -493,7 +505,7 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
64136 * and won't be until we finish.
64137 */
64138 error = -EPERM;
64139- if (sysctl_perm(head, table, write ? MAY_WRITE : MAY_READ))
64140+ if (sysctl_perm(head, table, op))
64141 goto out;
64142
64143 /* if that can happen at all, it should be -EINVAL, not -EISDIR */
64144@@ -501,6 +513,27 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
64145 if (!table->proc_handler)
64146 goto out;
64147
64148+#ifdef CONFIG_GRKERNSEC
64149+ error = -EPERM;
64150+ if (gr_handle_chroot_sysctl(op))
64151+ goto out;
64152+ dget(filp->f_path.dentry);
64153+ if (gr_handle_sysctl_mod(filp->f_path.dentry->d_parent->d_name.name, table->procname, op)) {
64154+ dput(filp->f_path.dentry);
64155+ goto out;
64156+ }
64157+ dput(filp->f_path.dentry);
64158+ if (!gr_acl_handle_open(filp->f_path.dentry, filp->f_path.mnt, op))
64159+ goto out;
64160+ if (write) {
64161+ if (current->nsproxy->net_ns != table->extra2) {
64162+ if (!capable(CAP_SYS_ADMIN))
64163+ goto out;
64164+ } else if (!ns_capable(current->nsproxy->net_ns->user_ns, CAP_NET_ADMIN))
64165+ goto out;
64166+ }
64167+#endif
64168+
64169 /* careful: calling conventions are nasty here */
64170 res = count;
64171 error = table->proc_handler(table, write, buf, &res, ppos);
64172@@ -598,6 +631,9 @@ static bool proc_sys_fill_cache(struct file *file,
64173 return false;
64174 } else {
64175 d_set_d_op(child, &proc_sys_dentry_operations);
64176+
64177+ gr_handle_proc_create(child, inode);
64178+
64179 d_add(child, inode);
64180 }
64181 } else {
64182@@ -641,6 +677,9 @@ static int scan(struct ctl_table_header *head, ctl_table *table,
64183 if ((*pos)++ < ctx->pos)
64184 return true;
64185
64186+ if (!gr_acl_handle_hidden_file(file->f_path.dentry, file->f_path.mnt))
64187+ return 0;
64188+
64189 if (unlikely(S_ISLNK(table->mode)))
64190 res = proc_sys_link_fill_cache(file, ctx, head, table);
64191 else
64192@@ -734,6 +773,9 @@ static int proc_sys_getattr(struct vfsmount *mnt, struct dentry *dentry, struct
64193 if (IS_ERR(head))
64194 return PTR_ERR(head);
64195
64196+ if (table && !gr_acl_handle_hidden_file(dentry, mnt))
64197+ return -ENOENT;
64198+
64199 generic_fillattr(inode, stat);
64200 if (table)
64201 stat->mode = (stat->mode & S_IFMT) | table->mode;
64202@@ -756,13 +798,13 @@ static const struct file_operations proc_sys_dir_file_operations = {
64203 .llseek = generic_file_llseek,
64204 };
64205
64206-static const struct inode_operations proc_sys_inode_operations = {
64207+const struct inode_operations proc_sys_inode_operations = {
64208 .permission = proc_sys_permission,
64209 .setattr = proc_sys_setattr,
64210 .getattr = proc_sys_getattr,
64211 };
64212
64213-static const struct inode_operations proc_sys_dir_operations = {
64214+const struct inode_operations proc_sys_dir_operations = {
64215 .lookup = proc_sys_lookup,
64216 .permission = proc_sys_permission,
64217 .setattr = proc_sys_setattr,
64218@@ -839,7 +881,7 @@ static struct ctl_dir *find_subdir(struct ctl_dir *dir,
64219 static struct ctl_dir *new_dir(struct ctl_table_set *set,
64220 const char *name, int namelen)
64221 {
64222- struct ctl_table *table;
64223+ ctl_table_no_const *table;
64224 struct ctl_dir *new;
64225 struct ctl_node *node;
64226 char *new_name;
64227@@ -851,7 +893,7 @@ static struct ctl_dir *new_dir(struct ctl_table_set *set,
64228 return NULL;
64229
64230 node = (struct ctl_node *)(new + 1);
64231- table = (struct ctl_table *)(node + 1);
64232+ table = (ctl_table_no_const *)(node + 1);
64233 new_name = (char *)(table + 2);
64234 memcpy(new_name, name, namelen);
64235 new_name[namelen] = '\0';
64236@@ -1020,7 +1062,8 @@ static int sysctl_check_table(const char *path, struct ctl_table *table)
64237 static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table *table,
64238 struct ctl_table_root *link_root)
64239 {
64240- struct ctl_table *link_table, *entry, *link;
64241+ ctl_table_no_const *link_table, *link;
64242+ struct ctl_table *entry;
64243 struct ctl_table_header *links;
64244 struct ctl_node *node;
64245 char *link_name;
64246@@ -1043,7 +1086,7 @@ static struct ctl_table_header *new_links(struct ctl_dir *dir, struct ctl_table
64247 return NULL;
64248
64249 node = (struct ctl_node *)(links + 1);
64250- link_table = (struct ctl_table *)(node + nr_entries);
64251+ link_table = (ctl_table_no_const *)(node + nr_entries);
64252 link_name = (char *)&link_table[nr_entries + 1];
64253
64254 for (link = link_table, entry = table; entry->procname; link++, entry++) {
64255@@ -1291,8 +1334,8 @@ static int register_leaf_sysctl_tables(const char *path, char *pos,
64256 struct ctl_table_header ***subheader, struct ctl_table_set *set,
64257 struct ctl_table *table)
64258 {
64259- struct ctl_table *ctl_table_arg = NULL;
64260- struct ctl_table *entry, *files;
64261+ ctl_table_no_const *ctl_table_arg = NULL, *files = NULL;
64262+ struct ctl_table *entry;
64263 int nr_files = 0;
64264 int nr_dirs = 0;
64265 int err = -ENOMEM;
64266@@ -1304,10 +1347,9 @@ static int register_leaf_sysctl_tables(const char *path, char *pos,
64267 nr_files++;
64268 }
64269
64270- files = table;
64271 /* If there are mixed files and directories we need a new table */
64272 if (nr_dirs && nr_files) {
64273- struct ctl_table *new;
64274+ ctl_table_no_const *new;
64275 files = kzalloc(sizeof(struct ctl_table) * (nr_files + 1),
64276 GFP_KERNEL);
64277 if (!files)
64278@@ -1325,7 +1367,7 @@ static int register_leaf_sysctl_tables(const char *path, char *pos,
64279 /* Register everything except a directory full of subdirectories */
64280 if (nr_files || !nr_dirs) {
64281 struct ctl_table_header *header;
64282- header = __register_sysctl_table(set, path, files);
64283+ header = __register_sysctl_table(set, path, files ? files : table);
64284 if (!header) {
64285 kfree(ctl_table_arg);
64286 goto out;
64287diff --git a/fs/proc/root.c b/fs/proc/root.c
64288index 5dbadec..473af2f 100644
64289--- a/fs/proc/root.c
64290+++ b/fs/proc/root.c
64291@@ -185,7 +185,15 @@ void __init proc_root_init(void)
64292 proc_mkdir("openprom", NULL);
64293 #endif
64294 proc_tty_init();
64295+#ifdef CONFIG_GRKERNSEC_PROC_ADD
64296+#ifdef CONFIG_GRKERNSEC_PROC_USER
64297+ proc_mkdir_mode("bus", S_IRUSR | S_IXUSR, NULL);
64298+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
64299+ proc_mkdir_mode("bus", S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP, NULL);
64300+#endif
64301+#else
64302 proc_mkdir("bus", NULL);
64303+#endif
64304 proc_sys_init();
64305 }
64306
64307diff --git a/fs/proc/stat.c b/fs/proc/stat.c
64308index 9d231e9..2e1b51a 100644
64309--- a/fs/proc/stat.c
64310+++ b/fs/proc/stat.c
64311@@ -11,6 +11,7 @@
64312 #include <linux/irqnr.h>
64313 #include <linux/cputime.h>
64314 #include <linux/tick.h>
64315+#include <linux/grsecurity.h>
64316
64317 #ifndef arch_irq_stat_cpu
64318 #define arch_irq_stat_cpu(cpu) 0
64319@@ -87,6 +88,18 @@ static int show_stat(struct seq_file *p, void *v)
64320 u64 sum_softirq = 0;
64321 unsigned int per_softirq_sums[NR_SOFTIRQS] = {0};
64322 struct timespec boottime;
64323+ int unrestricted = 1;
64324+
64325+#ifdef CONFIG_GRKERNSEC_PROC_ADD
64326+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
64327+ if (!uid_eq(current_uid(), GLOBAL_ROOT_UID)
64328+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
64329+ && !in_group_p(grsec_proc_gid)
64330+#endif
64331+ )
64332+ unrestricted = 0;
64333+#endif
64334+#endif
64335
64336 user = nice = system = idle = iowait =
64337 irq = softirq = steal = 0;
64338@@ -99,23 +112,25 @@ static int show_stat(struct seq_file *p, void *v)
64339 nice += kcpustat_cpu(i).cpustat[CPUTIME_NICE];
64340 system += kcpustat_cpu(i).cpustat[CPUTIME_SYSTEM];
64341 idle += get_idle_time(i);
64342- iowait += get_iowait_time(i);
64343- irq += kcpustat_cpu(i).cpustat[CPUTIME_IRQ];
64344- softirq += kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ];
64345- steal += kcpustat_cpu(i).cpustat[CPUTIME_STEAL];
64346- guest += kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
64347- guest_nice += kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
64348- sum += kstat_cpu_irqs_sum(i);
64349- sum += arch_irq_stat_cpu(i);
64350+ if (unrestricted) {
64351+ iowait += get_iowait_time(i);
64352+ irq += kcpustat_cpu(i).cpustat[CPUTIME_IRQ];
64353+ softirq += kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ];
64354+ steal += kcpustat_cpu(i).cpustat[CPUTIME_STEAL];
64355+ guest += kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
64356+ guest_nice += kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
64357+ sum += kstat_cpu_irqs_sum(i);
64358+ sum += arch_irq_stat_cpu(i);
64359+ for (j = 0; j < NR_SOFTIRQS; j++) {
64360+ unsigned int softirq_stat = kstat_softirqs_cpu(j, i);
64361
64362- for (j = 0; j < NR_SOFTIRQS; j++) {
64363- unsigned int softirq_stat = kstat_softirqs_cpu(j, i);
64364-
64365- per_softirq_sums[j] += softirq_stat;
64366- sum_softirq += softirq_stat;
64367+ per_softirq_sums[j] += softirq_stat;
64368+ sum_softirq += softirq_stat;
64369+ }
64370 }
64371 }
64372- sum += arch_irq_stat();
64373+ if (unrestricted)
64374+ sum += arch_irq_stat();
64375
64376 seq_puts(p, "cpu ");
64377 seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(user));
64378@@ -136,12 +151,14 @@ static int show_stat(struct seq_file *p, void *v)
64379 nice = kcpustat_cpu(i).cpustat[CPUTIME_NICE];
64380 system = kcpustat_cpu(i).cpustat[CPUTIME_SYSTEM];
64381 idle = get_idle_time(i);
64382- iowait = get_iowait_time(i);
64383- irq = kcpustat_cpu(i).cpustat[CPUTIME_IRQ];
64384- softirq = kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ];
64385- steal = kcpustat_cpu(i).cpustat[CPUTIME_STEAL];
64386- guest = kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
64387- guest_nice = kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
64388+ if (unrestricted) {
64389+ iowait = get_iowait_time(i);
64390+ irq = kcpustat_cpu(i).cpustat[CPUTIME_IRQ];
64391+ softirq = kcpustat_cpu(i).cpustat[CPUTIME_SOFTIRQ];
64392+ steal = kcpustat_cpu(i).cpustat[CPUTIME_STEAL];
64393+ guest = kcpustat_cpu(i).cpustat[CPUTIME_GUEST];
64394+ guest_nice = kcpustat_cpu(i).cpustat[CPUTIME_GUEST_NICE];
64395+ }
64396 seq_printf(p, "cpu%d", i);
64397 seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(user));
64398 seq_put_decimal_ull(p, ' ', cputime64_to_clock_t(nice));
64399@@ -159,7 +176,7 @@ static int show_stat(struct seq_file *p, void *v)
64400
64401 /* sum again ? it could be updated? */
64402 for_each_irq_nr(j)
64403- seq_put_decimal_ull(p, ' ', kstat_irqs(j));
64404+ seq_put_decimal_ull(p, ' ', unrestricted ? kstat_irqs(j) : 0ULL);
64405
64406 seq_printf(p,
64407 "\nctxt %llu\n"
64408@@ -167,11 +184,11 @@ static int show_stat(struct seq_file *p, void *v)
64409 "processes %lu\n"
64410 "procs_running %lu\n"
64411 "procs_blocked %lu\n",
64412- nr_context_switches(),
64413+ unrestricted ? nr_context_switches() : 0ULL,
64414 (unsigned long)jif,
64415- total_forks,
64416- nr_running(),
64417- nr_iowait());
64418+ unrestricted ? total_forks : 0UL,
64419+ unrestricted ? nr_running() : 0UL,
64420+ unrestricted ? nr_iowait() : 0UL);
64421
64422 seq_printf(p, "softirq %llu", (unsigned long long)sum_softirq);
64423
64424diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
64425index c4b2646..84f0d7b 100644
64426--- a/fs/proc/task_mmu.c
64427+++ b/fs/proc/task_mmu.c
64428@@ -13,12 +13,19 @@
64429 #include <linux/swap.h>
64430 #include <linux/swapops.h>
64431 #include <linux/mmu_notifier.h>
64432+#include <linux/grsecurity.h>
64433
64434 #include <asm/elf.h>
64435 #include <asm/uaccess.h>
64436 #include <asm/tlbflush.h>
64437 #include "internal.h"
64438
64439+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
64440+#define PAX_RAND_FLAGS(_mm) (_mm != NULL && _mm != current->mm && \
64441+ (_mm->pax_flags & MF_PAX_RANDMMAP || \
64442+ _mm->pax_flags & MF_PAX_SEGMEXEC))
64443+#endif
64444+
64445 void task_mem(struct seq_file *m, struct mm_struct *mm)
64446 {
64447 unsigned long data, text, lib, swap;
64448@@ -54,8 +61,13 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
64449 "VmExe:\t%8lu kB\n"
64450 "VmLib:\t%8lu kB\n"
64451 "VmPTE:\t%8lu kB\n"
64452- "VmSwap:\t%8lu kB\n",
64453- hiwater_vm << (PAGE_SHIFT-10),
64454+ "VmSwap:\t%8lu kB\n"
64455+
64456+#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT
64457+ "CsBase:\t%8lx\nCsLim:\t%8lx\n"
64458+#endif
64459+
64460+ ,hiwater_vm << (PAGE_SHIFT-10),
64461 total_vm << (PAGE_SHIFT-10),
64462 mm->locked_vm << (PAGE_SHIFT-10),
64463 mm->pinned_vm << (PAGE_SHIFT-10),
64464@@ -65,7 +77,19 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
64465 mm->stack_vm << (PAGE_SHIFT-10), text, lib,
64466 (PTRS_PER_PTE * sizeof(pte_t) *
64467 atomic_long_read(&mm->nr_ptes)) >> 10,
64468- swap << (PAGE_SHIFT-10));
64469+ swap << (PAGE_SHIFT-10)
64470+
64471+#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT
64472+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
64473+ , PAX_RAND_FLAGS(mm) ? 0 : mm->context.user_cs_base
64474+ , PAX_RAND_FLAGS(mm) ? 0 : mm->context.user_cs_limit
64475+#else
64476+ , mm->context.user_cs_base
64477+ , mm->context.user_cs_limit
64478+#endif
64479+#endif
64480+
64481+ );
64482 }
64483
64484 unsigned long task_vsize(struct mm_struct *mm)
64485@@ -271,13 +295,13 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
64486 pgoff = ((loff_t)vma->vm_pgoff) << PAGE_SHIFT;
64487 }
64488
64489- /* We don't show the stack guard page in /proc/maps */
64490+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
64491+ start = PAX_RAND_FLAGS(mm) ? 0UL : vma->vm_start;
64492+ end = PAX_RAND_FLAGS(mm) ? 0UL : vma->vm_end;
64493+#else
64494 start = vma->vm_start;
64495- if (stack_guard_page_start(vma, start))
64496- start += PAGE_SIZE;
64497 end = vma->vm_end;
64498- if (stack_guard_page_end(vma, end))
64499- end -= PAGE_SIZE;
64500+#endif
64501
64502 seq_setwidth(m, 25 + sizeof(void *) * 6 - 1);
64503 seq_printf(m, "%08lx-%08lx %c%c%c%c %08llx %02x:%02x %lu ",
64504@@ -287,7 +311,11 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
64505 flags & VM_WRITE ? 'w' : '-',
64506 flags & VM_EXEC ? 'x' : '-',
64507 flags & VM_MAYSHARE ? 's' : 'p',
64508+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
64509+ PAX_RAND_FLAGS(mm) ? 0UL : pgoff,
64510+#else
64511 pgoff,
64512+#endif
64513 MAJOR(dev), MINOR(dev), ino);
64514
64515 /*
64516@@ -296,7 +324,7 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
64517 */
64518 if (file) {
64519 seq_pad(m, ' ');
64520- seq_path(m, &file->f_path, "\n");
64521+ seq_path(m, &file->f_path, "\n\\");
64522 goto done;
64523 }
64524
64525@@ -322,8 +350,9 @@ show_map_vma(struct seq_file *m, struct vm_area_struct *vma, int is_pid)
64526 * Thread stack in /proc/PID/task/TID/maps or
64527 * the main process stack.
64528 */
64529- if (!is_pid || (vma->vm_start <= mm->start_stack &&
64530- vma->vm_end >= mm->start_stack)) {
64531+ if (!is_pid || (vma->vm_flags & (VM_GROWSDOWN | VM_GROWSUP)) ||
64532+ (vma->vm_start <= mm->start_stack &&
64533+ vma->vm_end >= mm->start_stack)) {
64534 name = "[stack]";
64535 } else {
64536 /* Thread stack in /proc/PID/maps */
64537@@ -347,6 +376,13 @@ static int show_map(struct seq_file *m, void *v, int is_pid)
64538 struct proc_maps_private *priv = m->private;
64539 struct task_struct *task = priv->task;
64540
64541+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
64542+ if (current->exec_id != m->exec_id) {
64543+ gr_log_badprocpid("maps");
64544+ return 0;
64545+ }
64546+#endif
64547+
64548 show_map_vma(m, vma, is_pid);
64549
64550 if (m->count < m->size) /* vma is copied successfully */
64551@@ -587,12 +623,23 @@ static int show_smap(struct seq_file *m, void *v, int is_pid)
64552 .private = &mss,
64553 };
64554
64555+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
64556+ if (current->exec_id != m->exec_id) {
64557+ gr_log_badprocpid("smaps");
64558+ return 0;
64559+ }
64560+#endif
64561 memset(&mss, 0, sizeof mss);
64562- mss.vma = vma;
64563- /* mmap_sem is held in m_start */
64564- if (vma->vm_mm && !is_vm_hugetlb_page(vma))
64565- walk_page_range(vma->vm_start, vma->vm_end, &smaps_walk);
64566-
64567+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
64568+ if (!PAX_RAND_FLAGS(vma->vm_mm)) {
64569+#endif
64570+ mss.vma = vma;
64571+ /* mmap_sem is held in m_start */
64572+ if (vma->vm_mm && !is_vm_hugetlb_page(vma))
64573+ walk_page_range(vma->vm_start, vma->vm_end, &smaps_walk);
64574+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
64575+ }
64576+#endif
64577 show_map_vma(m, vma, is_pid);
64578
64579 seq_printf(m,
64580@@ -610,7 +657,11 @@ static int show_smap(struct seq_file *m, void *v, int is_pid)
64581 "KernelPageSize: %8lu kB\n"
64582 "MMUPageSize: %8lu kB\n"
64583 "Locked: %8lu kB\n",
64584+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
64585+ PAX_RAND_FLAGS(vma->vm_mm) ? 0UL : (vma->vm_end - vma->vm_start) >> 10,
64586+#else
64587 (vma->vm_end - vma->vm_start) >> 10,
64588+#endif
64589 mss.resident >> 10,
64590 (unsigned long)(mss.pss >> (10 + PSS_SHIFT)),
64591 mss.shared_clean >> 10,
64592@@ -1388,6 +1439,13 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
64593 char buffer[64];
64594 int nid;
64595
64596+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
64597+ if (current->exec_id != m->exec_id) {
64598+ gr_log_badprocpid("numa_maps");
64599+ return 0;
64600+ }
64601+#endif
64602+
64603 if (!mm)
64604 return 0;
64605
64606@@ -1405,11 +1463,15 @@ static int show_numa_map(struct seq_file *m, void *v, int is_pid)
64607 mpol_to_str(buffer, sizeof(buffer), pol);
64608 mpol_cond_put(pol);
64609
64610+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
64611+ seq_printf(m, "%08lx %s", PAX_RAND_FLAGS(vma->vm_mm) ? 0UL : vma->vm_start, buffer);
64612+#else
64613 seq_printf(m, "%08lx %s", vma->vm_start, buffer);
64614+#endif
64615
64616 if (file) {
64617 seq_printf(m, " file=");
64618- seq_path(m, &file->f_path, "\n\t= ");
64619+ seq_path(m, &file->f_path, "\n\t\\= ");
64620 } else if (vma->vm_start <= mm->brk && vma->vm_end >= mm->start_brk) {
64621 seq_printf(m, " heap");
64622 } else {
64623diff --git a/fs/proc/task_nommu.c b/fs/proc/task_nommu.c
64624index 678455d..ebd3245 100644
64625--- a/fs/proc/task_nommu.c
64626+++ b/fs/proc/task_nommu.c
64627@@ -51,7 +51,7 @@ void task_mem(struct seq_file *m, struct mm_struct *mm)
64628 else
64629 bytes += kobjsize(mm);
64630
64631- if (current->fs && current->fs->users > 1)
64632+ if (current->fs && atomic_read(&current->fs->users) > 1)
64633 sbytes += kobjsize(current->fs);
64634 else
64635 bytes += kobjsize(current->fs);
64636@@ -161,7 +161,7 @@ static int nommu_vma_show(struct seq_file *m, struct vm_area_struct *vma,
64637
64638 if (file) {
64639 seq_pad(m, ' ');
64640- seq_path(m, &file->f_path, "");
64641+ seq_path(m, &file->f_path, "\n\\");
64642 } else if (mm) {
64643 pid_t tid = vm_is_stack(priv->task, vma, is_pid);
64644
64645diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
64646index 6a8e785..41f2a6c 100644
64647--- a/fs/proc/vmcore.c
64648+++ b/fs/proc/vmcore.c
64649@@ -105,9 +105,13 @@ static ssize_t read_from_oldmem(char *buf, size_t count,
64650 nr_bytes = count;
64651
64652 /* If pfn is not ram, return zeros for sparse dump files */
64653- if (pfn_is_ram(pfn) == 0)
64654- memset(buf, 0, nr_bytes);
64655- else {
64656+ if (pfn_is_ram(pfn) == 0) {
64657+ if (userbuf) {
64658+ if (clear_user((char __force_user *)buf, nr_bytes))
64659+ return -EFAULT;
64660+ } else
64661+ memset(buf, 0, nr_bytes);
64662+ } else {
64663 tmp = copy_oldmem_page(pfn, buf, nr_bytes,
64664 offset, userbuf);
64665 if (tmp < 0)
64666@@ -170,7 +174,7 @@ int __weak remap_oldmem_pfn_range(struct vm_area_struct *vma,
64667 static int copy_to(void *target, void *src, size_t size, int userbuf)
64668 {
64669 if (userbuf) {
64670- if (copy_to_user((char __user *) target, src, size))
64671+ if (copy_to_user((char __force_user *) target, src, size))
64672 return -EFAULT;
64673 } else {
64674 memcpy(target, src, size);
64675@@ -233,7 +237,7 @@ static ssize_t __read_vmcore(char *buffer, size_t buflen, loff_t *fpos,
64676 if (*fpos < m->offset + m->size) {
64677 tsz = min_t(size_t, m->offset + m->size - *fpos, buflen);
64678 start = m->paddr + *fpos - m->offset;
64679- tmp = read_from_oldmem(buffer, tsz, &start, userbuf);
64680+ tmp = read_from_oldmem((char __force_kernel *)buffer, tsz, &start, userbuf);
64681 if (tmp < 0)
64682 return tmp;
64683 buflen -= tsz;
64684@@ -253,7 +257,7 @@ static ssize_t __read_vmcore(char *buffer, size_t buflen, loff_t *fpos,
64685 static ssize_t read_vmcore(struct file *file, char __user *buffer,
64686 size_t buflen, loff_t *fpos)
64687 {
64688- return __read_vmcore((__force char *) buffer, buflen, fpos, 1);
64689+ return __read_vmcore((__force_kernel char *) buffer, buflen, fpos, 1);
64690 }
64691
64692 /*
64693diff --git a/fs/qnx6/qnx6.h b/fs/qnx6/qnx6.h
64694index b00fcc9..e0c6381 100644
64695--- a/fs/qnx6/qnx6.h
64696+++ b/fs/qnx6/qnx6.h
64697@@ -74,7 +74,7 @@ enum {
64698 BYTESEX_BE,
64699 };
64700
64701-static inline __u64 fs64_to_cpu(struct qnx6_sb_info *sbi, __fs64 n)
64702+static inline __u64 __intentional_overflow(-1) fs64_to_cpu(struct qnx6_sb_info *sbi, __fs64 n)
64703 {
64704 if (sbi->s_bytesex == BYTESEX_LE)
64705 return le64_to_cpu((__force __le64)n);
64706@@ -90,7 +90,7 @@ static inline __fs64 cpu_to_fs64(struct qnx6_sb_info *sbi, __u64 n)
64707 return (__force __fs64)cpu_to_be64(n);
64708 }
64709
64710-static inline __u32 fs32_to_cpu(struct qnx6_sb_info *sbi, __fs32 n)
64711+static inline __u32 __intentional_overflow(-1) fs32_to_cpu(struct qnx6_sb_info *sbi, __fs32 n)
64712 {
64713 if (sbi->s_bytesex == BYTESEX_LE)
64714 return le32_to_cpu((__force __le32)n);
64715diff --git a/fs/quota/netlink.c b/fs/quota/netlink.c
64716index 72d2917..c917c12 100644
64717--- a/fs/quota/netlink.c
64718+++ b/fs/quota/netlink.c
64719@@ -45,7 +45,7 @@ static struct genl_family quota_genl_family = {
64720 void quota_send_warning(struct kqid qid, dev_t dev,
64721 const char warntype)
64722 {
64723- static atomic_t seq;
64724+ static atomic_unchecked_t seq;
64725 struct sk_buff *skb;
64726 void *msg_head;
64727 int ret;
64728@@ -61,7 +61,7 @@ void quota_send_warning(struct kqid qid, dev_t dev,
64729 "VFS: Not enough memory to send quota warning.\n");
64730 return;
64731 }
64732- msg_head = genlmsg_put(skb, 0, atomic_add_return(1, &seq),
64733+ msg_head = genlmsg_put(skb, 0, atomic_add_return_unchecked(1, &seq),
64734 &quota_genl_family, 0, QUOTA_NL_C_WARNING);
64735 if (!msg_head) {
64736 printk(KERN_ERR
64737diff --git a/fs/read_write.c b/fs/read_write.c
64738index 31c6efa..a068805 100644
64739--- a/fs/read_write.c
64740+++ b/fs/read_write.c
64741@@ -450,7 +450,7 @@ ssize_t __kernel_write(struct file *file, const char *buf, size_t count, loff_t
64742
64743 old_fs = get_fs();
64744 set_fs(get_ds());
64745- p = (__force const char __user *)buf;
64746+ p = (const char __force_user *)buf;
64747 if (count > MAX_RW_COUNT)
64748 count = MAX_RW_COUNT;
64749 if (file->f_op->write)
64750diff --git a/fs/readdir.c b/fs/readdir.c
64751index 5b53d99..a6c3049 100644
64752--- a/fs/readdir.c
64753+++ b/fs/readdir.c
64754@@ -17,6 +17,7 @@
64755 #include <linux/security.h>
64756 #include <linux/syscalls.h>
64757 #include <linux/unistd.h>
64758+#include <linux/namei.h>
64759
64760 #include <asm/uaccess.h>
64761
64762@@ -69,6 +70,7 @@ struct old_linux_dirent {
64763 struct readdir_callback {
64764 struct dir_context ctx;
64765 struct old_linux_dirent __user * dirent;
64766+ struct file * file;
64767 int result;
64768 };
64769
64770@@ -86,6 +88,10 @@ static int fillonedir(void * __buf, const char * name, int namlen, loff_t offset
64771 buf->result = -EOVERFLOW;
64772 return -EOVERFLOW;
64773 }
64774+
64775+ if (!gr_acl_handle_filldir(buf->file, name, namlen, ino))
64776+ return 0;
64777+
64778 buf->result++;
64779 dirent = buf->dirent;
64780 if (!access_ok(VERIFY_WRITE, dirent,
64781@@ -117,6 +123,7 @@ SYSCALL_DEFINE3(old_readdir, unsigned int, fd,
64782 if (!f.file)
64783 return -EBADF;
64784
64785+ buf.file = f.file;
64786 error = iterate_dir(f.file, &buf.ctx);
64787 if (buf.result)
64788 error = buf.result;
64789@@ -142,6 +149,7 @@ struct getdents_callback {
64790 struct dir_context ctx;
64791 struct linux_dirent __user * current_dir;
64792 struct linux_dirent __user * previous;
64793+ struct file * file;
64794 int count;
64795 int error;
64796 };
64797@@ -163,6 +171,10 @@ static int filldir(void * __buf, const char * name, int namlen, loff_t offset,
64798 buf->error = -EOVERFLOW;
64799 return -EOVERFLOW;
64800 }
64801+
64802+ if (!gr_acl_handle_filldir(buf->file, name, namlen, ino))
64803+ return 0;
64804+
64805 dirent = buf->previous;
64806 if (dirent) {
64807 if (__put_user(offset, &dirent->d_off))
64808@@ -208,6 +220,7 @@ SYSCALL_DEFINE3(getdents, unsigned int, fd,
64809 if (!f.file)
64810 return -EBADF;
64811
64812+ buf.file = f.file;
64813 error = iterate_dir(f.file, &buf.ctx);
64814 if (error >= 0)
64815 error = buf.error;
64816@@ -226,6 +239,7 @@ struct getdents_callback64 {
64817 struct dir_context ctx;
64818 struct linux_dirent64 __user * current_dir;
64819 struct linux_dirent64 __user * previous;
64820+ struct file *file;
64821 int count;
64822 int error;
64823 };
64824@@ -241,6 +255,10 @@ static int filldir64(void * __buf, const char * name, int namlen, loff_t offset,
64825 buf->error = -EINVAL; /* only used if we fail.. */
64826 if (reclen > buf->count)
64827 return -EINVAL;
64828+
64829+ if (!gr_acl_handle_filldir(buf->file, name, namlen, ino))
64830+ return 0;
64831+
64832 dirent = buf->previous;
64833 if (dirent) {
64834 if (__put_user(offset, &dirent->d_off))
64835@@ -288,6 +306,7 @@ SYSCALL_DEFINE3(getdents64, unsigned int, fd,
64836 if (!f.file)
64837 return -EBADF;
64838
64839+ buf.file = f.file;
64840 error = iterate_dir(f.file, &buf.ctx);
64841 if (error >= 0)
64842 error = buf.error;
64843diff --git a/fs/reiserfs/do_balan.c b/fs/reiserfs/do_balan.c
64844index 9a3c68c..767933e 100644
64845--- a/fs/reiserfs/do_balan.c
64846+++ b/fs/reiserfs/do_balan.c
64847@@ -1546,7 +1546,7 @@ void do_balance(struct tree_balance *tb, /* tree_balance structure */
64848 return;
64849 }
64850
64851- atomic_inc(&(fs_generation(tb->tb_sb)));
64852+ atomic_inc_unchecked(&(fs_generation(tb->tb_sb)));
64853 do_balance_starts(tb);
64854
64855 /* balance leaf returns 0 except if combining L R and S into
64856diff --git a/fs/reiserfs/item_ops.c b/fs/reiserfs/item_ops.c
64857index ee382ef..f4eb6eb5 100644
64858--- a/fs/reiserfs/item_ops.c
64859+++ b/fs/reiserfs/item_ops.c
64860@@ -725,18 +725,18 @@ static void errcatch_print_vi(struct virtual_item *vi)
64861 }
64862
64863 static struct item_operations errcatch_ops = {
64864- errcatch_bytes_number,
64865- errcatch_decrement_key,
64866- errcatch_is_left_mergeable,
64867- errcatch_print_item,
64868- errcatch_check_item,
64869+ .bytes_number = errcatch_bytes_number,
64870+ .decrement_key = errcatch_decrement_key,
64871+ .is_left_mergeable = errcatch_is_left_mergeable,
64872+ .print_item = errcatch_print_item,
64873+ .check_item = errcatch_check_item,
64874
64875- errcatch_create_vi,
64876- errcatch_check_left,
64877- errcatch_check_right,
64878- errcatch_part_size,
64879- errcatch_unit_num,
64880- errcatch_print_vi
64881+ .create_vi = errcatch_create_vi,
64882+ .check_left = errcatch_check_left,
64883+ .check_right = errcatch_check_right,
64884+ .part_size = errcatch_part_size,
64885+ .unit_num = errcatch_unit_num,
64886+ .print_vi = errcatch_print_vi
64887 };
64888
64889 //////////////////////////////////////////////////////////////////////////////
64890diff --git a/fs/reiserfs/procfs.c b/fs/reiserfs/procfs.c
64891index 02b0b7d..c85018b 100644
64892--- a/fs/reiserfs/procfs.c
64893+++ b/fs/reiserfs/procfs.c
64894@@ -114,7 +114,7 @@ static int show_super(struct seq_file *m, void *unused)
64895 "SMALL_TAILS " : "NO_TAILS ",
64896 replay_only(sb) ? "REPLAY_ONLY " : "",
64897 convert_reiserfs(sb) ? "CONV " : "",
64898- atomic_read(&r->s_generation_counter),
64899+ atomic_read_unchecked(&r->s_generation_counter),
64900 SF(s_disk_reads), SF(s_disk_writes), SF(s_fix_nodes),
64901 SF(s_do_balance), SF(s_unneeded_left_neighbor),
64902 SF(s_good_search_by_key_reada), SF(s_bmaps),
64903diff --git a/fs/reiserfs/reiserfs.h b/fs/reiserfs/reiserfs.h
64904index 83d4eac..04e39a7 100644
64905--- a/fs/reiserfs/reiserfs.h
64906+++ b/fs/reiserfs/reiserfs.h
64907@@ -453,7 +453,7 @@ struct reiserfs_sb_info {
64908 /* Comment? -Hans */
64909 wait_queue_head_t s_wait;
64910 /* To be obsoleted soon by per buffer seals.. -Hans */
64911- atomic_t s_generation_counter; // increased by one every time the
64912+ atomic_unchecked_t s_generation_counter; // increased by one every time the
64913 // tree gets re-balanced
64914 unsigned long s_properties; /* File system properties. Currently holds
64915 on-disk FS format */
64916@@ -1972,7 +1972,7 @@ static inline loff_t max_reiserfs_offset(struct inode *inode)
64917 #define REISERFS_USER_MEM 1 /* reiserfs user memory mode */
64918
64919 #define fs_generation(s) (REISERFS_SB(s)->s_generation_counter)
64920-#define get_generation(s) atomic_read (&fs_generation(s))
64921+#define get_generation(s) atomic_read_unchecked (&fs_generation(s))
64922 #define FILESYSTEM_CHANGED_TB(tb) (get_generation((tb)->tb_sb) != (tb)->fs_gen)
64923 #define __fs_changed(gen,s) (gen != get_generation (s))
64924 #define fs_changed(gen,s) \
64925diff --git a/fs/select.c b/fs/select.c
64926index 467bb1c..cf9d65a 100644
64927--- a/fs/select.c
64928+++ b/fs/select.c
64929@@ -20,6 +20,7 @@
64930 #include <linux/export.h>
64931 #include <linux/slab.h>
64932 #include <linux/poll.h>
64933+#include <linux/security.h>
64934 #include <linux/personality.h> /* for STICKY_TIMEOUTS */
64935 #include <linux/file.h>
64936 #include <linux/fdtable.h>
64937@@ -880,6 +881,7 @@ int do_sys_poll(struct pollfd __user *ufds, unsigned int nfds,
64938 struct poll_list *walk = head;
64939 unsigned long todo = nfds;
64940
64941+ gr_learn_resource(current, RLIMIT_NOFILE, nfds, 1);
64942 if (nfds > rlimit(RLIMIT_NOFILE))
64943 return -EINVAL;
64944
64945diff --git a/fs/seq_file.c b/fs/seq_file.c
64946index 1d641bb..c2f4743 100644
64947--- a/fs/seq_file.c
64948+++ b/fs/seq_file.c
64949@@ -10,6 +10,8 @@
64950 #include <linux/seq_file.h>
64951 #include <linux/slab.h>
64952 #include <linux/cred.h>
64953+#include <linux/sched.h>
64954+#include <linux/grsecurity.h>
64955
64956 #include <asm/uaccess.h>
64957 #include <asm/page.h>
64958@@ -60,6 +62,9 @@ int seq_open(struct file *file, const struct seq_operations *op)
64959 #ifdef CONFIG_USER_NS
64960 p->user_ns = file->f_cred->user_ns;
64961 #endif
64962+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
64963+ p->exec_id = current->exec_id;
64964+#endif
64965
64966 /*
64967 * Wrappers around seq_open(e.g. swaps_open) need to be
64968@@ -82,6 +87,16 @@ int seq_open(struct file *file, const struct seq_operations *op)
64969 }
64970 EXPORT_SYMBOL(seq_open);
64971
64972+
64973+int seq_open_restrict(struct file *file, const struct seq_operations *op)
64974+{
64975+ if (gr_proc_is_restricted())
64976+ return -EACCES;
64977+
64978+ return seq_open(file, op);
64979+}
64980+EXPORT_SYMBOL(seq_open_restrict);
64981+
64982 static int traverse(struct seq_file *m, loff_t offset)
64983 {
64984 loff_t pos = 0, index;
64985@@ -96,7 +111,7 @@ static int traverse(struct seq_file *m, loff_t offset)
64986 return 0;
64987 }
64988 if (!m->buf) {
64989- m->buf = kmalloc(m->size = PAGE_SIZE, GFP_KERNEL);
64990+ m->buf = kmalloc(m->size = PAGE_SIZE, GFP_KERNEL | GFP_USERCOPY);
64991 if (!m->buf)
64992 return -ENOMEM;
64993 }
64994@@ -137,7 +152,7 @@ Eoverflow:
64995 m->op->stop(m, p);
64996 kfree(m->buf);
64997 m->count = 0;
64998- m->buf = kmalloc(m->size <<= 1, GFP_KERNEL);
64999+ m->buf = kmalloc(m->size <<= 1, GFP_KERNEL | GFP_USERCOPY);
65000 return !m->buf ? -ENOMEM : -EAGAIN;
65001 }
65002
65003@@ -153,7 +168,7 @@ Eoverflow:
65004 ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
65005 {
65006 struct seq_file *m = file->private_data;
65007- size_t copied = 0;
65008+ ssize_t copied = 0;
65009 loff_t pos;
65010 size_t n;
65011 void *p;
65012@@ -192,7 +207,7 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
65013
65014 /* grab buffer if we didn't have one */
65015 if (!m->buf) {
65016- m->buf = kmalloc(m->size = PAGE_SIZE, GFP_KERNEL);
65017+ m->buf = kmalloc(m->size = PAGE_SIZE, GFP_KERNEL | GFP_USERCOPY);
65018 if (!m->buf)
65019 goto Enomem;
65020 }
65021@@ -234,7 +249,7 @@ ssize_t seq_read(struct file *file, char __user *buf, size_t size, loff_t *ppos)
65022 m->op->stop(m, p);
65023 kfree(m->buf);
65024 m->count = 0;
65025- m->buf = kmalloc(m->size <<= 1, GFP_KERNEL);
65026+ m->buf = kmalloc(m->size <<= 1, GFP_KERNEL | GFP_USERCOPY);
65027 if (!m->buf)
65028 goto Enomem;
65029 m->version = 0;
65030@@ -584,7 +599,7 @@ static void single_stop(struct seq_file *p, void *v)
65031 int single_open(struct file *file, int (*show)(struct seq_file *, void *),
65032 void *data)
65033 {
65034- struct seq_operations *op = kmalloc(sizeof(*op), GFP_KERNEL);
65035+ seq_operations_no_const *op = kzalloc(sizeof(*op), GFP_KERNEL);
65036 int res = -ENOMEM;
65037
65038 if (op) {
65039@@ -620,6 +635,17 @@ int single_open_size(struct file *file, int (*show)(struct seq_file *, void *),
65040 }
65041 EXPORT_SYMBOL(single_open_size);
65042
65043+int single_open_restrict(struct file *file, int (*show)(struct seq_file *, void *),
65044+ void *data)
65045+{
65046+ if (gr_proc_is_restricted())
65047+ return -EACCES;
65048+
65049+ return single_open(file, show, data);
65050+}
65051+EXPORT_SYMBOL(single_open_restrict);
65052+
65053+
65054 int single_release(struct inode *inode, struct file *file)
65055 {
65056 const struct seq_operations *op = ((struct seq_file *)file->private_data)->op;
65057diff --git a/fs/splice.c b/fs/splice.c
65058index e246954..bd4f5b5 100644
65059--- a/fs/splice.c
65060+++ b/fs/splice.c
65061@@ -192,7 +192,7 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
65062 pipe_lock(pipe);
65063
65064 for (;;) {
65065- if (!pipe->readers) {
65066+ if (!atomic_read(&pipe->readers)) {
65067 send_sig(SIGPIPE, current, 0);
65068 if (!ret)
65069 ret = -EPIPE;
65070@@ -215,7 +215,7 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
65071 page_nr++;
65072 ret += buf->len;
65073
65074- if (pipe->files)
65075+ if (atomic_read(&pipe->files))
65076 do_wakeup = 1;
65077
65078 if (!--spd->nr_pages)
65079@@ -246,9 +246,9 @@ ssize_t splice_to_pipe(struct pipe_inode_info *pipe,
65080 do_wakeup = 0;
65081 }
65082
65083- pipe->waiting_writers++;
65084+ atomic_inc(&pipe->waiting_writers);
65085 pipe_wait(pipe);
65086- pipe->waiting_writers--;
65087+ atomic_dec(&pipe->waiting_writers);
65088 }
65089
65090 pipe_unlock(pipe);
65091@@ -575,7 +575,7 @@ static ssize_t kernel_readv(struct file *file, const struct iovec *vec,
65092 old_fs = get_fs();
65093 set_fs(get_ds());
65094 /* The cast to a user pointer is valid due to the set_fs() */
65095- res = vfs_readv(file, (const struct iovec __user *)vec, vlen, &pos);
65096+ res = vfs_readv(file, (const struct iovec __force_user *)vec, vlen, &pos);
65097 set_fs(old_fs);
65098
65099 return res;
65100@@ -590,7 +590,7 @@ ssize_t kernel_write(struct file *file, const char *buf, size_t count,
65101 old_fs = get_fs();
65102 set_fs(get_ds());
65103 /* The cast to a user pointer is valid due to the set_fs() */
65104- res = vfs_write(file, (__force const char __user *)buf, count, &pos);
65105+ res = vfs_write(file, (const char __force_user *)buf, count, &pos);
65106 set_fs(old_fs);
65107
65108 return res;
65109@@ -643,7 +643,7 @@ ssize_t default_file_splice_read(struct file *in, loff_t *ppos,
65110 goto err;
65111
65112 this_len = min_t(size_t, len, PAGE_CACHE_SIZE - offset);
65113- vec[i].iov_base = (void __user *) page_address(page);
65114+ vec[i].iov_base = (void __force_user *) page_address(page);
65115 vec[i].iov_len = this_len;
65116 spd.pages[i] = page;
65117 spd.nr_pages++;
65118@@ -839,7 +839,7 @@ int splice_from_pipe_feed(struct pipe_inode_info *pipe, struct splice_desc *sd,
65119 ops->release(pipe, buf);
65120 pipe->curbuf = (pipe->curbuf + 1) & (pipe->buffers - 1);
65121 pipe->nrbufs--;
65122- if (pipe->files)
65123+ if (atomic_read(&pipe->files))
65124 sd->need_wakeup = true;
65125 }
65126
65127@@ -864,10 +864,10 @@ EXPORT_SYMBOL(splice_from_pipe_feed);
65128 int splice_from_pipe_next(struct pipe_inode_info *pipe, struct splice_desc *sd)
65129 {
65130 while (!pipe->nrbufs) {
65131- if (!pipe->writers)
65132+ if (!atomic_read(&pipe->writers))
65133 return 0;
65134
65135- if (!pipe->waiting_writers && sd->num_spliced)
65136+ if (!atomic_read(&pipe->waiting_writers) && sd->num_spliced)
65137 return 0;
65138
65139 if (sd->flags & SPLICE_F_NONBLOCK)
65140@@ -1189,7 +1189,7 @@ ssize_t splice_direct_to_actor(struct file *in, struct splice_desc *sd,
65141 * out of the pipe right after the splice_to_pipe(). So set
65142 * PIPE_READERS appropriately.
65143 */
65144- pipe->readers = 1;
65145+ atomic_set(&pipe->readers, 1);
65146
65147 current->splice_pipe = pipe;
65148 }
65149@@ -1485,6 +1485,7 @@ static int get_iovec_page_array(const struct iovec __user *iov,
65150
65151 partial[buffers].offset = off;
65152 partial[buffers].len = plen;
65153+ partial[buffers].private = 0;
65154
65155 off = 0;
65156 len -= plen;
65157@@ -1721,9 +1722,9 @@ static int ipipe_prep(struct pipe_inode_info *pipe, unsigned int flags)
65158 ret = -ERESTARTSYS;
65159 break;
65160 }
65161- if (!pipe->writers)
65162+ if (!atomic_read(&pipe->writers))
65163 break;
65164- if (!pipe->waiting_writers) {
65165+ if (!atomic_read(&pipe->waiting_writers)) {
65166 if (flags & SPLICE_F_NONBLOCK) {
65167 ret = -EAGAIN;
65168 break;
65169@@ -1755,7 +1756,7 @@ static int opipe_prep(struct pipe_inode_info *pipe, unsigned int flags)
65170 pipe_lock(pipe);
65171
65172 while (pipe->nrbufs >= pipe->buffers) {
65173- if (!pipe->readers) {
65174+ if (!atomic_read(&pipe->readers)) {
65175 send_sig(SIGPIPE, current, 0);
65176 ret = -EPIPE;
65177 break;
65178@@ -1768,9 +1769,9 @@ static int opipe_prep(struct pipe_inode_info *pipe, unsigned int flags)
65179 ret = -ERESTARTSYS;
65180 break;
65181 }
65182- pipe->waiting_writers++;
65183+ atomic_inc(&pipe->waiting_writers);
65184 pipe_wait(pipe);
65185- pipe->waiting_writers--;
65186+ atomic_dec(&pipe->waiting_writers);
65187 }
65188
65189 pipe_unlock(pipe);
65190@@ -1806,14 +1807,14 @@ retry:
65191 pipe_double_lock(ipipe, opipe);
65192
65193 do {
65194- if (!opipe->readers) {
65195+ if (!atomic_read(&opipe->readers)) {
65196 send_sig(SIGPIPE, current, 0);
65197 if (!ret)
65198 ret = -EPIPE;
65199 break;
65200 }
65201
65202- if (!ipipe->nrbufs && !ipipe->writers)
65203+ if (!ipipe->nrbufs && !atomic_read(&ipipe->writers))
65204 break;
65205
65206 /*
65207@@ -1910,7 +1911,7 @@ static int link_pipe(struct pipe_inode_info *ipipe,
65208 pipe_double_lock(ipipe, opipe);
65209
65210 do {
65211- if (!opipe->readers) {
65212+ if (!atomic_read(&opipe->readers)) {
65213 send_sig(SIGPIPE, current, 0);
65214 if (!ret)
65215 ret = -EPIPE;
65216@@ -1955,7 +1956,7 @@ static int link_pipe(struct pipe_inode_info *ipipe,
65217 * return EAGAIN if we have the potential of some data in the
65218 * future, otherwise just return 0
65219 */
65220- if (!ret && ipipe->waiting_writers && (flags & SPLICE_F_NONBLOCK))
65221+ if (!ret && atomic_read(&ipipe->waiting_writers) && (flags & SPLICE_F_NONBLOCK))
65222 ret = -EAGAIN;
65223
65224 pipe_unlock(ipipe);
65225diff --git a/fs/stat.c b/fs/stat.c
65226index ae0c3ce..9ee641c 100644
65227--- a/fs/stat.c
65228+++ b/fs/stat.c
65229@@ -28,8 +28,13 @@ void generic_fillattr(struct inode *inode, struct kstat *stat)
65230 stat->gid = inode->i_gid;
65231 stat->rdev = inode->i_rdev;
65232 stat->size = i_size_read(inode);
65233- stat->atime = inode->i_atime;
65234- stat->mtime = inode->i_mtime;
65235+ if (is_sidechannel_device(inode) && !capable_nolog(CAP_MKNOD)) {
65236+ stat->atime = inode->i_ctime;
65237+ stat->mtime = inode->i_ctime;
65238+ } else {
65239+ stat->atime = inode->i_atime;
65240+ stat->mtime = inode->i_mtime;
65241+ }
65242 stat->ctime = inode->i_ctime;
65243 stat->blksize = (1 << inode->i_blkbits);
65244 stat->blocks = inode->i_blocks;
65245@@ -52,9 +57,16 @@ EXPORT_SYMBOL(generic_fillattr);
65246 int vfs_getattr_nosec(struct path *path, struct kstat *stat)
65247 {
65248 struct inode *inode = path->dentry->d_inode;
65249+ int retval;
65250
65251- if (inode->i_op->getattr)
65252- return inode->i_op->getattr(path->mnt, path->dentry, stat);
65253+ if (inode->i_op->getattr) {
65254+ retval = inode->i_op->getattr(path->mnt, path->dentry, stat);
65255+ if (!retval && is_sidechannel_device(inode) && !capable_nolog(CAP_MKNOD)) {
65256+ stat->atime = stat->ctime;
65257+ stat->mtime = stat->ctime;
65258+ }
65259+ return retval;
65260+ }
65261
65262 generic_fillattr(inode, stat);
65263 return 0;
65264diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
65265index 0b45ff4..847de5b 100644
65266--- a/fs/sysfs/dir.c
65267+++ b/fs/sysfs/dir.c
65268@@ -41,9 +41,16 @@ void sysfs_warn_dup(struct kernfs_node *parent, const char *name)
65269 int sysfs_create_dir_ns(struct kobject *kobj, const void *ns)
65270 {
65271 struct kernfs_node *parent, *kn;
65272+ const char *name;
65273+ umode_t mode = S_IRWXU | S_IRUGO | S_IXUGO;
65274+#ifdef CONFIG_GRKERNSEC_SYSFS_RESTRICT
65275+ const char *parent_name;
65276+#endif
65277
65278 BUG_ON(!kobj);
65279
65280+ name = kobject_name(kobj);
65281+
65282 if (kobj->parent)
65283 parent = kobj->parent->sd;
65284 else
65285@@ -52,11 +59,22 @@ int sysfs_create_dir_ns(struct kobject *kobj, const void *ns)
65286 if (!parent)
65287 return -ENOENT;
65288
65289- kn = kernfs_create_dir_ns(parent, kobject_name(kobj),
65290- S_IRWXU | S_IRUGO | S_IXUGO, kobj, ns);
65291+#ifdef CONFIG_GRKERNSEC_SYSFS_RESTRICT
65292+ parent_name = parent->name;
65293+ mode = S_IRWXU;
65294+
65295+ if ((!strcmp(parent_name, "") && (!strcmp(name, "devices") || !strcmp(name, "fs"))) ||
65296+ (!strcmp(parent_name, "devices") && !strcmp(name, "system")) ||
65297+ (!strcmp(parent_name, "fs") && (!strcmp(name, "selinux") || !strcmp(name, "fuse") || !strcmp(name, "ecryptfs"))) ||
65298+ (!strcmp(parent_name, "system") && !strcmp(name, "cpu")))
65299+ mode = S_IRWXU | S_IRUGO | S_IXUGO;
65300+#endif
65301+
65302+ kn = kernfs_create_dir_ns(parent, name,
65303+ mode, kobj, ns);
65304 if (IS_ERR(kn)) {
65305 if (PTR_ERR(kn) == -EEXIST)
65306- sysfs_warn_dup(parent, kobject_name(kobj));
65307+ sysfs_warn_dup(parent, name);
65308 return PTR_ERR(kn);
65309 }
65310
65311diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h
65312index 69d4889..a810bd4 100644
65313--- a/fs/sysv/sysv.h
65314+++ b/fs/sysv/sysv.h
65315@@ -188,7 +188,7 @@ static inline u32 PDP_swab(u32 x)
65316 #endif
65317 }
65318
65319-static inline __u32 fs32_to_cpu(struct sysv_sb_info *sbi, __fs32 n)
65320+static inline __u32 __intentional_overflow(-1) fs32_to_cpu(struct sysv_sb_info *sbi, __fs32 n)
65321 {
65322 if (sbi->s_bytesex == BYTESEX_PDP)
65323 return PDP_swab((__force __u32)n);
65324diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c
65325index e18b988..f1d4ad0f 100644
65326--- a/fs/ubifs/io.c
65327+++ b/fs/ubifs/io.c
65328@@ -155,7 +155,7 @@ int ubifs_leb_change(struct ubifs_info *c, int lnum, const void *buf, int len)
65329 return err;
65330 }
65331
65332-int ubifs_leb_unmap(struct ubifs_info *c, int lnum)
65333+int __intentional_overflow(-1) ubifs_leb_unmap(struct ubifs_info *c, int lnum)
65334 {
65335 int err;
65336
65337diff --git a/fs/udf/misc.c b/fs/udf/misc.c
65338index c175b4d..8f36a16 100644
65339--- a/fs/udf/misc.c
65340+++ b/fs/udf/misc.c
65341@@ -289,7 +289,7 @@ void udf_new_tag(char *data, uint16_t ident, uint16_t version, uint16_t snum,
65342
65343 u8 udf_tag_checksum(const struct tag *t)
65344 {
65345- u8 *data = (u8 *)t;
65346+ const u8 *data = (const u8 *)t;
65347 u8 checksum = 0;
65348 int i;
65349 for (i = 0; i < sizeof(struct tag); ++i)
65350diff --git a/fs/ufs/swab.h b/fs/ufs/swab.h
65351index 8d974c4..b82f6ec 100644
65352--- a/fs/ufs/swab.h
65353+++ b/fs/ufs/swab.h
65354@@ -22,7 +22,7 @@ enum {
65355 BYTESEX_BE
65356 };
65357
65358-static inline u64
65359+static inline u64 __intentional_overflow(-1)
65360 fs64_to_cpu(struct super_block *sbp, __fs64 n)
65361 {
65362 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
65363@@ -40,7 +40,7 @@ cpu_to_fs64(struct super_block *sbp, u64 n)
65364 return (__force __fs64)cpu_to_be64(n);
65365 }
65366
65367-static inline u32
65368+static inline u32 __intentional_overflow(-1)
65369 fs32_to_cpu(struct super_block *sbp, __fs32 n)
65370 {
65371 if (UFS_SB(sbp)->s_bytesex == BYTESEX_LE)
65372diff --git a/fs/utimes.c b/fs/utimes.c
65373index aa138d6..5f3a811 100644
65374--- a/fs/utimes.c
65375+++ b/fs/utimes.c
65376@@ -1,6 +1,7 @@
65377 #include <linux/compiler.h>
65378 #include <linux/file.h>
65379 #include <linux/fs.h>
65380+#include <linux/security.h>
65381 #include <linux/linkage.h>
65382 #include <linux/mount.h>
65383 #include <linux/namei.h>
65384@@ -103,6 +104,12 @@ static int utimes_common(struct path *path, struct timespec *times)
65385 }
65386 }
65387 retry_deleg:
65388+
65389+ if (!gr_acl_handle_utime(path->dentry, path->mnt)) {
65390+ error = -EACCES;
65391+ goto mnt_drop_write_and_out;
65392+ }
65393+
65394 mutex_lock(&inode->i_mutex);
65395 error = notify_change(path->dentry, &newattrs, &delegated_inode);
65396 mutex_unlock(&inode->i_mutex);
65397diff --git a/fs/xattr.c b/fs/xattr.c
65398index 3377dff..f394815 100644
65399--- a/fs/xattr.c
65400+++ b/fs/xattr.c
65401@@ -227,6 +227,27 @@ int vfs_xattr_cmp(struct dentry *dentry, const char *xattr_name,
65402 return rc;
65403 }
65404
65405+#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
65406+ssize_t
65407+pax_getxattr(struct dentry *dentry, void *value, size_t size)
65408+{
65409+ struct inode *inode = dentry->d_inode;
65410+ ssize_t error;
65411+
65412+ error = inode_permission(inode, MAY_EXEC);
65413+ if (error)
65414+ return error;
65415+
65416+ if (inode->i_op->getxattr)
65417+ error = inode->i_op->getxattr(dentry, XATTR_NAME_PAX_FLAGS, value, size);
65418+ else
65419+ error = -EOPNOTSUPP;
65420+
65421+ return error;
65422+}
65423+EXPORT_SYMBOL(pax_getxattr);
65424+#endif
65425+
65426 ssize_t
65427 vfs_getxattr(struct dentry *dentry, const char *name, void *value, size_t size)
65428 {
65429@@ -319,7 +340,7 @@ EXPORT_SYMBOL_GPL(vfs_removexattr);
65430 * Extended attribute SET operations
65431 */
65432 static long
65433-setxattr(struct dentry *d, const char __user *name, const void __user *value,
65434+setxattr(struct path *path, const char __user *name, const void __user *value,
65435 size_t size, int flags)
65436 {
65437 int error;
65438@@ -355,7 +376,12 @@ setxattr(struct dentry *d, const char __user *name, const void __user *value,
65439 posix_acl_fix_xattr_from_user(kvalue, size);
65440 }
65441
65442- error = vfs_setxattr(d, kname, kvalue, size, flags);
65443+ if (!gr_acl_handle_setxattr(path->dentry, path->mnt)) {
65444+ error = -EACCES;
65445+ goto out;
65446+ }
65447+
65448+ error = vfs_setxattr(path->dentry, kname, kvalue, size, flags);
65449 out:
65450 if (vvalue)
65451 vfree(vvalue);
65452@@ -377,7 +403,7 @@ retry:
65453 return error;
65454 error = mnt_want_write(path.mnt);
65455 if (!error) {
65456- error = setxattr(path.dentry, name, value, size, flags);
65457+ error = setxattr(&path, name, value, size, flags);
65458 mnt_drop_write(path.mnt);
65459 }
65460 path_put(&path);
65461@@ -401,7 +427,7 @@ retry:
65462 return error;
65463 error = mnt_want_write(path.mnt);
65464 if (!error) {
65465- error = setxattr(path.dentry, name, value, size, flags);
65466+ error = setxattr(&path, name, value, size, flags);
65467 mnt_drop_write(path.mnt);
65468 }
65469 path_put(&path);
65470@@ -416,16 +442,14 @@ SYSCALL_DEFINE5(fsetxattr, int, fd, const char __user *, name,
65471 const void __user *,value, size_t, size, int, flags)
65472 {
65473 struct fd f = fdget(fd);
65474- struct dentry *dentry;
65475 int error = -EBADF;
65476
65477 if (!f.file)
65478 return error;
65479- dentry = f.file->f_path.dentry;
65480- audit_inode(NULL, dentry, 0);
65481+ audit_inode(NULL, f.file->f_path.dentry, 0);
65482 error = mnt_want_write_file(f.file);
65483 if (!error) {
65484- error = setxattr(dentry, name, value, size, flags);
65485+ error = setxattr(&f.file->f_path, name, value, size, flags);
65486 mnt_drop_write_file(f.file);
65487 }
65488 fdput(f);
65489@@ -626,7 +650,7 @@ SYSCALL_DEFINE3(flistxattr, int, fd, char __user *, list, size_t, size)
65490 * Extended attribute REMOVE operations
65491 */
65492 static long
65493-removexattr(struct dentry *d, const char __user *name)
65494+removexattr(struct path *path, const char __user *name)
65495 {
65496 int error;
65497 char kname[XATTR_NAME_MAX + 1];
65498@@ -637,7 +661,10 @@ removexattr(struct dentry *d, const char __user *name)
65499 if (error < 0)
65500 return error;
65501
65502- return vfs_removexattr(d, kname);
65503+ if (!gr_acl_handle_removexattr(path->dentry, path->mnt))
65504+ return -EACCES;
65505+
65506+ return vfs_removexattr(path->dentry, kname);
65507 }
65508
65509 SYSCALL_DEFINE2(removexattr, const char __user *, pathname,
65510@@ -652,7 +679,7 @@ retry:
65511 return error;
65512 error = mnt_want_write(path.mnt);
65513 if (!error) {
65514- error = removexattr(path.dentry, name);
65515+ error = removexattr(&path, name);
65516 mnt_drop_write(path.mnt);
65517 }
65518 path_put(&path);
65519@@ -675,7 +702,7 @@ retry:
65520 return error;
65521 error = mnt_want_write(path.mnt);
65522 if (!error) {
65523- error = removexattr(path.dentry, name);
65524+ error = removexattr(&path, name);
65525 mnt_drop_write(path.mnt);
65526 }
65527 path_put(&path);
65528@@ -689,16 +716,16 @@ retry:
65529 SYSCALL_DEFINE2(fremovexattr, int, fd, const char __user *, name)
65530 {
65531 struct fd f = fdget(fd);
65532- struct dentry *dentry;
65533+ struct path *path;
65534 int error = -EBADF;
65535
65536 if (!f.file)
65537 return error;
65538- dentry = f.file->f_path.dentry;
65539- audit_inode(NULL, dentry, 0);
65540+ path = &f.file->f_path;
65541+ audit_inode(NULL, path->dentry, 0);
65542 error = mnt_want_write_file(f.file);
65543 if (!error) {
65544- error = removexattr(dentry, name);
65545+ error = removexattr(path, name);
65546 mnt_drop_write_file(f.file);
65547 }
65548 fdput(f);
65549diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
65550index f0efc7e..ba72910 100644
65551--- a/fs/xfs/xfs_bmap.c
65552+++ b/fs/xfs/xfs_bmap.c
65553@@ -584,7 +584,7 @@ xfs_bmap_validate_ret(
65554
65555 #else
65556 #define xfs_bmap_check_leaf_extents(cur, ip, whichfork) do { } while (0)
65557-#define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap)
65558+#define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap) do { } while (0)
65559 #endif /* DEBUG */
65560
65561 /*
65562diff --git a/fs/xfs/xfs_dir2_readdir.c b/fs/xfs/xfs_dir2_readdir.c
65563index aead369..0dfecfd 100644
65564--- a/fs/xfs/xfs_dir2_readdir.c
65565+++ b/fs/xfs/xfs_dir2_readdir.c
65566@@ -160,7 +160,12 @@ xfs_dir2_sf_getdents(
65567 ino = dp->d_ops->sf_get_ino(sfp, sfep);
65568 filetype = dp->d_ops->sf_get_ftype(sfep);
65569 ctx->pos = off & 0x7fffffff;
65570- if (!dir_emit(ctx, (char *)sfep->name, sfep->namelen, ino,
65571+ if (dp->i_df.if_u1.if_data == dp->i_df.if_u2.if_inline_data) {
65572+ char name[sfep->namelen];
65573+ memcpy(name, sfep->name, sfep->namelen);
65574+ if (!dir_emit(ctx, name, sfep->namelen, ino, xfs_dir3_get_dtype(mp, filetype)))
65575+ return 0;
65576+ } else if (!dir_emit(ctx, (char *)sfep->name, sfep->namelen, ino,
65577 xfs_dir3_get_dtype(mp, filetype)))
65578 return 0;
65579 sfep = dp->d_ops->sf_nextentry(sfp, sfep);
65580diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
65581index 6152cbe..f0f9eaa 100644
65582--- a/fs/xfs/xfs_ioctl.c
65583+++ b/fs/xfs/xfs_ioctl.c
65584@@ -122,7 +122,7 @@ xfs_find_handle(
65585 }
65586
65587 error = -EFAULT;
65588- if (copy_to_user(hreq->ohandle, &handle, hsize) ||
65589+ if (hsize > sizeof handle || copy_to_user(hreq->ohandle, &handle, hsize) ||
65590 copy_to_user(hreq->ohandlen, &hsize, sizeof(__s32)))
65591 goto out_put;
65592
65593diff --git a/grsecurity/Kconfig b/grsecurity/Kconfig
65594new file mode 100644
65595index 0000000..bfd482c
65596--- /dev/null
65597+++ b/grsecurity/Kconfig
65598@@ -0,0 +1,1176 @@
65599+#
65600+# grecurity configuration
65601+#
65602+menu "Memory Protections"
65603+depends on GRKERNSEC
65604+
65605+config GRKERNSEC_KMEM
65606+ bool "Deny reading/writing to /dev/kmem, /dev/mem, and /dev/port"
65607+ default y if GRKERNSEC_CONFIG_AUTO
65608+ select STRICT_DEVMEM if (X86 || ARM || TILE || S390)
65609+ help
65610+ If you say Y here, /dev/kmem and /dev/mem won't be allowed to
65611+ be written to or read from to modify or leak the contents of the running
65612+ kernel. /dev/port will also not be allowed to be opened, writing to
65613+ /dev/cpu/*/msr will be prevented, and support for kexec will be removed.
65614+ If you have module support disabled, enabling this will close up several
65615+ ways that are currently used to insert malicious code into the running
65616+ kernel.
65617+
65618+ Even with this feature enabled, we still highly recommend that
65619+ you use the RBAC system, as it is still possible for an attacker to
65620+ modify the running kernel through other more obscure methods.
65621+
65622+ It is highly recommended that you say Y here if you meet all the
65623+ conditions above.
65624+
65625+config GRKERNSEC_VM86
65626+ bool "Restrict VM86 mode"
65627+ default y if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER)
65628+ depends on X86_32
65629+
65630+ help
65631+ If you say Y here, only processes with CAP_SYS_RAWIO will be able to
65632+ make use of a special execution mode on 32bit x86 processors called
65633+ Virtual 8086 (VM86) mode. XFree86 may need vm86 mode for certain
65634+ video cards and will still work with this option enabled. The purpose
65635+ of the option is to prevent exploitation of emulation errors in
65636+ virtualization of vm86 mode like the one discovered in VMWare in 2009.
65637+ Nearly all users should be able to enable this option.
65638+
65639+config GRKERNSEC_IO
65640+ bool "Disable privileged I/O"
65641+ default y if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER)
65642+ depends on X86
65643+ select RTC_CLASS
65644+ select RTC_INTF_DEV
65645+ select RTC_DRV_CMOS
65646+
65647+ help
65648+ If you say Y here, all ioperm and iopl calls will return an error.
65649+ Ioperm and iopl can be used to modify the running kernel.
65650+ Unfortunately, some programs need this access to operate properly,
65651+ the most notable of which are XFree86 and hwclock. hwclock can be
65652+ remedied by having RTC support in the kernel, so real-time
65653+ clock support is enabled if this option is enabled, to ensure
65654+ that hwclock operates correctly. If hwclock still does not work,
65655+ either update udev or symlink /dev/rtc to /dev/rtc0.
65656+
65657+ If you're using XFree86 or a version of Xorg from 2012 or earlier,
65658+ you may not be able to boot into a graphical environment with this
65659+ option enabled. In this case, you should use the RBAC system instead.
65660+
65661+config GRKERNSEC_JIT_HARDEN
65662+ bool "Harden BPF JIT against spray attacks"
65663+ default y if GRKERNSEC_CONFIG_AUTO
65664+ depends on BPF_JIT && X86
65665+ help
65666+ If you say Y here, the native code generated by the kernel's Berkeley
65667+ Packet Filter (BPF) JIT engine will be hardened against JIT-spraying
65668+ attacks that attempt to fit attacker-beneficial instructions in
65669+ 32bit immediate fields of JIT-generated native instructions. The
65670+ attacker will generally aim to cause an unintended instruction sequence
65671+ of JIT-generated native code to execute by jumping into the middle of
65672+ a generated instruction. This feature effectively randomizes the 32bit
65673+ immediate constants present in the generated code to thwart such attacks.
65674+
65675+ If you're using KERNEXEC, it's recommended that you enable this option
65676+ to supplement the hardening of the kernel.
65677+
65678+config GRKERNSEC_PERF_HARDEN
65679+ bool "Disable unprivileged PERF_EVENTS usage by default"
65680+ default y if GRKERNSEC_CONFIG_AUTO
65681+ depends on PERF_EVENTS
65682+ help
65683+ If you say Y here, the range of acceptable values for the
65684+ /proc/sys/kernel/perf_event_paranoid sysctl will be expanded to allow and
65685+ default to a new value: 3. When the sysctl is set to this value, no
65686+ unprivileged use of the PERF_EVENTS syscall interface will be permitted.
65687+
65688+ Though PERF_EVENTS can be used legitimately for performance monitoring
65689+ and low-level application profiling, it is forced on regardless of
65690+ configuration, has been at fault for several vulnerabilities, and
65691+ creates new opportunities for side channels and other information leaks.
65692+
65693+ This feature puts PERF_EVENTS into a secure default state and permits
65694+ the administrator to change out of it temporarily if unprivileged
65695+ application profiling is needed.
65696+
65697+config GRKERNSEC_RAND_THREADSTACK
65698+ bool "Insert random gaps between thread stacks"
65699+ default y if GRKERNSEC_CONFIG_AUTO
65700+ depends on PAX_RANDMMAP && !PPC
65701+ help
65702+ If you say Y here, a random-sized gap will be enforced between allocated
65703+ thread stacks. Glibc's NPTL and other threading libraries that
65704+ pass MAP_STACK to the kernel for thread stack allocation are supported.
65705+ The implementation currently provides 8 bits of entropy for the gap.
65706+
65707+ Many distributions do not compile threaded remote services with the
65708+ -fstack-check argument to GCC, causing the variable-sized stack-based
65709+ allocator, alloca(), to not probe the stack on allocation. This
65710+ permits an unbounded alloca() to skip over any guard page and potentially
65711+ modify another thread's stack reliably. An enforced random gap
65712+ reduces the reliability of such an attack and increases the chance
65713+ that such a read/write to another thread's stack instead lands in
65714+ an unmapped area, causing a crash and triggering grsecurity's
65715+ anti-bruteforcing logic.
65716+
65717+config GRKERNSEC_PROC_MEMMAP
65718+ bool "Harden ASLR against information leaks and entropy reduction"
65719+ default y if (GRKERNSEC_CONFIG_AUTO || PAX_NOEXEC || PAX_ASLR)
65720+ depends on PAX_NOEXEC || PAX_ASLR
65721+ help
65722+ If you say Y here, the /proc/<pid>/maps and /proc/<pid>/stat files will
65723+ give no information about the addresses of its mappings if
65724+ PaX features that rely on random addresses are enabled on the task.
65725+ In addition to sanitizing this information and disabling other
65726+ dangerous sources of information, this option causes reads of sensitive
65727+ /proc/<pid> entries where the file descriptor was opened in a different
65728+ task than the one performing the read. Such attempts are logged.
65729+ This option also limits argv/env strings for suid/sgid binaries
65730+ to 512KB to prevent a complete exhaustion of the stack entropy provided
65731+ by ASLR. Finally, it places an 8MB stack resource limit on suid/sgid
65732+ binaries to prevent alternative mmap layouts from being abused.
65733+
65734+ If you use PaX it is essential that you say Y here as it closes up
65735+ several holes that make full ASLR useless locally.
65736+
65737+
65738+config GRKERNSEC_KSTACKOVERFLOW
65739+ bool "Prevent kernel stack overflows"
65740+ default y if GRKERNSEC_CONFIG_AUTO
65741+ depends on !IA64 && 64BIT
65742+ help
65743+ If you say Y here, the kernel's process stacks will be allocated
65744+ with vmalloc instead of the kernel's default allocator. This
65745+ introduces guard pages that in combination with the alloca checking
65746+ of the STACKLEAK feature prevents all forms of kernel process stack
65747+ overflow abuse. Note that this is different from kernel stack
65748+ buffer overflows.
65749+
65750+config GRKERNSEC_BRUTE
65751+ bool "Deter exploit bruteforcing"
65752+ default y if GRKERNSEC_CONFIG_AUTO
65753+ help
65754+ If you say Y here, attempts to bruteforce exploits against forking
65755+ daemons such as apache or sshd, as well as against suid/sgid binaries
65756+ will be deterred. When a child of a forking daemon is killed by PaX
65757+ or crashes due to an illegal instruction or other suspicious signal,
65758+ the parent process will be delayed 30 seconds upon every subsequent
65759+ fork until the administrator is able to assess the situation and
65760+ restart the daemon.
65761+ In the suid/sgid case, the attempt is logged, the user has all their
65762+ existing instances of the suid/sgid binary terminated and will
65763+ be unable to execute any suid/sgid binaries for 15 minutes.
65764+
65765+ It is recommended that you also enable signal logging in the auditing
65766+ section so that logs are generated when a process triggers a suspicious
65767+ signal.
65768+ If the sysctl option is enabled, a sysctl option with name
65769+ "deter_bruteforce" is created.
65770+
65771+config GRKERNSEC_MODHARDEN
65772+ bool "Harden module auto-loading"
65773+ default y if GRKERNSEC_CONFIG_AUTO
65774+ depends on MODULES
65775+ help
65776+ If you say Y here, module auto-loading in response to use of some
65777+ feature implemented by an unloaded module will be restricted to
65778+ root users. Enabling this option helps defend against attacks
65779+ by unprivileged users who abuse the auto-loading behavior to
65780+ cause a vulnerable module to load that is then exploited.
65781+
65782+ If this option prevents a legitimate use of auto-loading for a
65783+ non-root user, the administrator can execute modprobe manually
65784+ with the exact name of the module mentioned in the alert log.
65785+ Alternatively, the administrator can add the module to the list
65786+ of modules loaded at boot by modifying init scripts.
65787+
65788+ Modification of init scripts will most likely be needed on
65789+ Ubuntu servers with encrypted home directory support enabled,
65790+ as the first non-root user logging in will cause the ecb(aes),
65791+ ecb(aes)-all, cbc(aes), and cbc(aes)-all modules to be loaded.
65792+
65793+config GRKERNSEC_HIDESYM
65794+ bool "Hide kernel symbols"
65795+ default y if GRKERNSEC_CONFIG_AUTO
65796+ select PAX_USERCOPY_SLABS
65797+ help
65798+ If you say Y here, getting information on loaded modules, and
65799+ displaying all kernel symbols through a syscall will be restricted
65800+ to users with CAP_SYS_MODULE. For software compatibility reasons,
65801+ /proc/kallsyms will be restricted to the root user. The RBAC
65802+ system can hide that entry even from root.
65803+
65804+ This option also prevents leaking of kernel addresses through
65805+ several /proc entries.
65806+
65807+ Note that this option is only effective provided the following
65808+ conditions are met:
65809+ 1) The kernel using grsecurity is not precompiled by some distribution
65810+ 2) You have also enabled GRKERNSEC_DMESG
65811+ 3) You are using the RBAC system and hiding other files such as your
65812+ kernel image and System.map. Alternatively, enabling this option
65813+ causes the permissions on /boot, /lib/modules, and the kernel
65814+ source directory to change at compile time to prevent
65815+ reading by non-root users.
65816+ If the above conditions are met, this option will aid in providing a
65817+ useful protection against local kernel exploitation of overflows
65818+ and arbitrary read/write vulnerabilities.
65819+
65820+ It is highly recommended that you enable GRKERNSEC_PERF_HARDEN
65821+ in addition to this feature.
65822+
65823+config GRKERNSEC_RANDSTRUCT
65824+ bool "Randomize layout of sensitive kernel structures"
65825+ default y if GRKERNSEC_CONFIG_AUTO
65826+ select GRKERNSEC_HIDESYM
65827+ select MODVERSIONS if MODULES
65828+ help
65829+ If you say Y here, the layouts of a number of sensitive kernel
65830+ structures (task, fs, cred, etc) and all structures composed entirely
65831+ of function pointers (aka "ops" structs) will be randomized at compile-time.
65832+ This can introduce the requirement of an additional infoleak
65833+ vulnerability for exploits targeting these structure types.
65834+
65835+ Enabling this feature will introduce some performance impact, slightly
65836+ increase memory usage, and prevent the use of forensic tools like
65837+ Volatility against the system (unless the kernel source tree isn't
65838+ cleaned after kernel installation).
65839+
65840+ The seed used for compilation is located at tools/gcc/randomize_layout_seed.h.
65841+ It remains after a make clean to allow for external modules to be compiled
65842+ with the existing seed and will be removed by a make mrproper or
65843+ make distclean.
65844+
65845+ Note that the implementation requires gcc 4.6.4. or newer. You may need
65846+ to install the supporting headers explicitly in addition to the normal
65847+ gcc package.
65848+
65849+config GRKERNSEC_RANDSTRUCT_PERFORMANCE
65850+ bool "Use cacheline-aware structure randomization"
65851+ depends on GRKERNSEC_RANDSTRUCT
65852+ default y if GRKERNSEC_CONFIG_PRIORITY_PERF
65853+ help
65854+ If you say Y here, the RANDSTRUCT randomization will make a best effort
65855+ at restricting randomization to cacheline-sized groups of elements. It
65856+ will further not randomize bitfields in structures. This reduces the
65857+ performance hit of RANDSTRUCT at the cost of weakened randomization.
65858+
65859+config GRKERNSEC_KERN_LOCKOUT
65860+ bool "Active kernel exploit response"
65861+ default y if GRKERNSEC_CONFIG_AUTO
65862+ depends on X86 || ARM || PPC || SPARC
65863+ help
65864+ If you say Y here, when a PaX alert is triggered due to suspicious
65865+ activity in the kernel (from KERNEXEC/UDEREF/USERCOPY)
65866+ or an OOPS occurs due to bad memory accesses, instead of just
65867+ terminating the offending process (and potentially allowing
65868+ a subsequent exploit from the same user), we will take one of two
65869+ actions:
65870+ If the user was root, we will panic the system
65871+ If the user was non-root, we will log the attempt, terminate
65872+ all processes owned by the user, then prevent them from creating
65873+ any new processes until the system is restarted
65874+ This deters repeated kernel exploitation/bruteforcing attempts
65875+ and is useful for later forensics.
65876+
65877+config GRKERNSEC_OLD_ARM_USERLAND
65878+ bool "Old ARM userland compatibility"
65879+ depends on ARM && (CPU_V6 || CPU_V6K || CPU_V7)
65880+ help
65881+ If you say Y here, stubs of executable code to perform such operations
65882+ as "compare-exchange" will be placed at fixed locations in the ARM vector
65883+ table. This is unfortunately needed for old ARM userland meant to run
65884+ across a wide range of processors. Without this option enabled,
65885+ the get_tls and data memory barrier stubs will be emulated by the kernel,
65886+ which is enough for Linaro userlands or other userlands designed for v6
65887+ and newer ARM CPUs. It's recommended that you try without this option enabled
65888+ first, and only enable it if your userland does not boot (it will likely fail
65889+ at init time).
65890+
65891+endmenu
65892+menu "Role Based Access Control Options"
65893+depends on GRKERNSEC
65894+
65895+config GRKERNSEC_RBAC_DEBUG
65896+ bool
65897+
65898+config GRKERNSEC_NO_RBAC
65899+ bool "Disable RBAC system"
65900+ help
65901+ If you say Y here, the /dev/grsec device will be removed from the kernel,
65902+ preventing the RBAC system from being enabled. You should only say Y
65903+ here if you have no intention of using the RBAC system, so as to prevent
65904+ an attacker with root access from misusing the RBAC system to hide files
65905+ and processes when loadable module support and /dev/[k]mem have been
65906+ locked down.
65907+
65908+config GRKERNSEC_ACL_HIDEKERN
65909+ bool "Hide kernel processes"
65910+ help
65911+ If you say Y here, all kernel threads will be hidden to all
65912+ processes but those whose subject has the "view hidden processes"
65913+ flag.
65914+
65915+config GRKERNSEC_ACL_MAXTRIES
65916+ int "Maximum tries before password lockout"
65917+ default 3
65918+ help
65919+ This option enforces the maximum number of times a user can attempt
65920+ to authorize themselves with the grsecurity RBAC system before being
65921+ denied the ability to attempt authorization again for a specified time.
65922+ The lower the number, the harder it will be to brute-force a password.
65923+
65924+config GRKERNSEC_ACL_TIMEOUT
65925+ int "Time to wait after max password tries, in seconds"
65926+ default 30
65927+ help
65928+ This option specifies the time the user must wait after attempting to
65929+ authorize to the RBAC system with the maximum number of invalid
65930+ passwords. The higher the number, the harder it will be to brute-force
65931+ a password.
65932+
65933+endmenu
65934+menu "Filesystem Protections"
65935+depends on GRKERNSEC
65936+
65937+config GRKERNSEC_PROC
65938+ bool "Proc restrictions"
65939+ default y if GRKERNSEC_CONFIG_AUTO
65940+ help
65941+ If you say Y here, the permissions of the /proc filesystem
65942+ will be altered to enhance system security and privacy. You MUST
65943+ choose either a user only restriction or a user and group restriction.
65944+ Depending upon the option you choose, you can either restrict users to
65945+ see only the processes they themselves run, or choose a group that can
65946+ view all processes and files normally restricted to root if you choose
65947+ the "restrict to user only" option. NOTE: If you're running identd or
65948+ ntpd as a non-root user, you will have to run it as the group you
65949+ specify here.
65950+
65951+config GRKERNSEC_PROC_USER
65952+ bool "Restrict /proc to user only"
65953+ depends on GRKERNSEC_PROC
65954+ help
65955+ If you say Y here, non-root users will only be able to view their own
65956+ processes, and restricts them from viewing network-related information,
65957+ and viewing kernel symbol and module information.
65958+
65959+config GRKERNSEC_PROC_USERGROUP
65960+ bool "Allow special group"
65961+ default y if GRKERNSEC_CONFIG_AUTO
65962+ depends on GRKERNSEC_PROC && !GRKERNSEC_PROC_USER
65963+ help
65964+ If you say Y here, you will be able to select a group that will be
65965+ able to view all processes and network-related information. If you've
65966+ enabled GRKERNSEC_HIDESYM, kernel and symbol information may still
65967+ remain hidden. This option is useful if you want to run identd as
65968+ a non-root user. The group you select may also be chosen at boot time
65969+ via "grsec_proc_gid=" on the kernel commandline.
65970+
65971+config GRKERNSEC_PROC_GID
65972+ int "GID for special group"
65973+ depends on GRKERNSEC_PROC_USERGROUP
65974+ default 1001
65975+
65976+config GRKERNSEC_PROC_ADD
65977+ bool "Additional restrictions"
65978+ default y if GRKERNSEC_CONFIG_AUTO
65979+ depends on GRKERNSEC_PROC_USER || GRKERNSEC_PROC_USERGROUP
65980+ help
65981+ If you say Y here, additional restrictions will be placed on
65982+ /proc that keep normal users from viewing device information and
65983+ slabinfo information that could be useful for exploits.
65984+
65985+config GRKERNSEC_LINK
65986+ bool "Linking restrictions"
65987+ default y if GRKERNSEC_CONFIG_AUTO
65988+ help
65989+ If you say Y here, /tmp race exploits will be prevented, since users
65990+ will no longer be able to follow symlinks owned by other users in
65991+ world-writable +t directories (e.g. /tmp), unless the owner of the
65992+ symlink is the owner of the directory. users will also not be
65993+ able to hardlink to files they do not own. If the sysctl option is
65994+ enabled, a sysctl option with name "linking_restrictions" is created.
65995+
65996+config GRKERNSEC_SYMLINKOWN
65997+ bool "Kernel-enforced SymlinksIfOwnerMatch"
65998+ default y if GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER
65999+ help
66000+ Apache's SymlinksIfOwnerMatch option has an inherent race condition
66001+ that prevents it from being used as a security feature. As Apache
66002+ verifies the symlink by performing a stat() against the target of
66003+ the symlink before it is followed, an attacker can setup a symlink
66004+ to point to a same-owned file, then replace the symlink with one
66005+ that targets another user's file just after Apache "validates" the
66006+ symlink -- a classic TOCTOU race. If you say Y here, a complete,
66007+ race-free replacement for Apache's "SymlinksIfOwnerMatch" option
66008+ will be in place for the group you specify. If the sysctl option
66009+ is enabled, a sysctl option with name "enforce_symlinksifowner" is
66010+ created.
66011+
66012+config GRKERNSEC_SYMLINKOWN_GID
66013+ int "GID for users with kernel-enforced SymlinksIfOwnerMatch"
66014+ depends on GRKERNSEC_SYMLINKOWN
66015+ default 1006
66016+ help
66017+ Setting this GID determines what group kernel-enforced
66018+ SymlinksIfOwnerMatch will be enabled for. If the sysctl option
66019+ is enabled, a sysctl option with name "symlinkown_gid" is created.
66020+
66021+config GRKERNSEC_FIFO
66022+ bool "FIFO restrictions"
66023+ default y if GRKERNSEC_CONFIG_AUTO
66024+ help
66025+ If you say Y here, users will not be able to write to FIFOs they don't
66026+ own in world-writable +t directories (e.g. /tmp), unless the owner of
66027+ the FIFO is the same owner of the directory it's held in. If the sysctl
66028+ option is enabled, a sysctl option with name "fifo_restrictions" is
66029+ created.
66030+
66031+config GRKERNSEC_SYSFS_RESTRICT
66032+ bool "Sysfs/debugfs restriction"
66033+ default y if (GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER)
66034+ depends on SYSFS
66035+ help
66036+ If you say Y here, sysfs (the pseudo-filesystem mounted at /sys) and
66037+ any filesystem normally mounted under it (e.g. debugfs) will be
66038+ mostly accessible only by root. These filesystems generally provide access
66039+ to hardware and debug information that isn't appropriate for unprivileged
66040+ users of the system. Sysfs and debugfs have also become a large source
66041+ of new vulnerabilities, ranging from infoleaks to local compromise.
66042+ There has been very little oversight with an eye toward security involved
66043+ in adding new exporters of information to these filesystems, so their
66044+ use is discouraged.
66045+ For reasons of compatibility, a few directories have been whitelisted
66046+ for access by non-root users:
66047+ /sys/fs/selinux
66048+ /sys/fs/fuse
66049+ /sys/devices/system/cpu
66050+
66051+config GRKERNSEC_ROFS
66052+ bool "Runtime read-only mount protection"
66053+ depends on SYSCTL
66054+ help
66055+ If you say Y here, a sysctl option with name "romount_protect" will
66056+ be created. By setting this option to 1 at runtime, filesystems
66057+ will be protected in the following ways:
66058+ * No new writable mounts will be allowed
66059+ * Existing read-only mounts won't be able to be remounted read/write
66060+ * Write operations will be denied on all block devices
66061+ This option acts independently of grsec_lock: once it is set to 1,
66062+ it cannot be turned off. Therefore, please be mindful of the resulting
66063+ behavior if this option is enabled in an init script on a read-only
66064+ filesystem.
66065+ Also be aware that as with other root-focused features, GRKERNSEC_KMEM
66066+ and GRKERNSEC_IO should be enabled and module loading disabled via
66067+ config or at runtime.
66068+ This feature is mainly intended for secure embedded systems.
66069+
66070+
66071+config GRKERNSEC_DEVICE_SIDECHANNEL
66072+ bool "Eliminate stat/notify-based device sidechannels"
66073+ default y if GRKERNSEC_CONFIG_AUTO
66074+ help
66075+ If you say Y here, timing analyses on block or character
66076+ devices like /dev/ptmx using stat or inotify/dnotify/fanotify
66077+ will be thwarted for unprivileged users. If a process without
66078+ CAP_MKNOD stats such a device, the last access and last modify times
66079+ will match the device's create time. No access or modify events
66080+ will be triggered through inotify/dnotify/fanotify for such devices.
66081+ This feature will prevent attacks that may at a minimum
66082+ allow an attacker to determine the administrator's password length.
66083+
66084+config GRKERNSEC_CHROOT
66085+ bool "Chroot jail restrictions"
66086+ default y if GRKERNSEC_CONFIG_AUTO
66087+ help
66088+ If you say Y here, you will be able to choose several options that will
66089+ make breaking out of a chrooted jail much more difficult. If you
66090+ encounter no software incompatibilities with the following options, it
66091+ is recommended that you enable each one.
66092+
66093+ Note that the chroot restrictions are not intended to apply to "chroots"
66094+ to directories that are simple bind mounts of the global root filesystem.
66095+ For several other reasons, a user shouldn't expect any significant
66096+ security by performing such a chroot.
66097+
66098+config GRKERNSEC_CHROOT_MOUNT
66099+ bool "Deny mounts"
66100+ default y if GRKERNSEC_CONFIG_AUTO
66101+ depends on GRKERNSEC_CHROOT
66102+ help
66103+ If you say Y here, processes inside a chroot will not be able to
66104+ mount or remount filesystems. If the sysctl option is enabled, a
66105+ sysctl option with name "chroot_deny_mount" is created.
66106+
66107+config GRKERNSEC_CHROOT_DOUBLE
66108+ bool "Deny double-chroots"
66109+ default y if GRKERNSEC_CONFIG_AUTO
66110+ depends on GRKERNSEC_CHROOT
66111+ help
66112+ If you say Y here, processes inside a chroot will not be able to chroot
66113+ again outside the chroot. This is a widely used method of breaking
66114+ out of a chroot jail and should not be allowed. If the sysctl
66115+ option is enabled, a sysctl option with name
66116+ "chroot_deny_chroot" is created.
66117+
66118+config GRKERNSEC_CHROOT_PIVOT
66119+ bool "Deny pivot_root in chroot"
66120+ default y if GRKERNSEC_CONFIG_AUTO
66121+ depends on GRKERNSEC_CHROOT
66122+ help
66123+ If you say Y here, processes inside a chroot will not be able to use
66124+ a function called pivot_root() that was introduced in Linux 2.3.41. It
66125+ works similar to chroot in that it changes the root filesystem. This
66126+ function could be misused in a chrooted process to attempt to break out
66127+ of the chroot, and therefore should not be allowed. If the sysctl
66128+ option is enabled, a sysctl option with name "chroot_deny_pivot" is
66129+ created.
66130+
66131+config GRKERNSEC_CHROOT_CHDIR
66132+ bool "Enforce chdir(\"/\") on all chroots"
66133+ default y if GRKERNSEC_CONFIG_AUTO
66134+ depends on GRKERNSEC_CHROOT
66135+ help
66136+ If you say Y here, the current working directory of all newly-chrooted
66137+ applications will be set to the the root directory of the chroot.
66138+ The man page on chroot(2) states:
66139+ Note that this call does not change the current working
66140+ directory, so that `.' can be outside the tree rooted at
66141+ `/'. In particular, the super-user can escape from a
66142+ `chroot jail' by doing `mkdir foo; chroot foo; cd ..'.
66143+
66144+ It is recommended that you say Y here, since it's not known to break
66145+ any software. If the sysctl option is enabled, a sysctl option with
66146+ name "chroot_enforce_chdir" is created.
66147+
66148+config GRKERNSEC_CHROOT_CHMOD
66149+ bool "Deny (f)chmod +s"
66150+ default y if GRKERNSEC_CONFIG_AUTO
66151+ depends on GRKERNSEC_CHROOT
66152+ help
66153+ If you say Y here, processes inside a chroot will not be able to chmod
66154+ or fchmod files to make them have suid or sgid bits. This protects
66155+ against another published method of breaking a chroot. If the sysctl
66156+ option is enabled, a sysctl option with name "chroot_deny_chmod" is
66157+ created.
66158+
66159+config GRKERNSEC_CHROOT_FCHDIR
66160+ bool "Deny fchdir and fhandle out of chroot"
66161+ default y if GRKERNSEC_CONFIG_AUTO
66162+ depends on GRKERNSEC_CHROOT
66163+ help
66164+ If you say Y here, a well-known method of breaking chroots by fchdir'ing
66165+ to a file descriptor of the chrooting process that points to a directory
66166+ outside the filesystem will be stopped. Additionally, this option prevents
66167+ use of the recently-created syscall for opening files by a guessable "file
66168+ handle" inside a chroot. If the sysctl option is enabled, a sysctl option
66169+ with name "chroot_deny_fchdir" is created.
66170+
66171+config GRKERNSEC_CHROOT_MKNOD
66172+ bool "Deny mknod"
66173+ default y if GRKERNSEC_CONFIG_AUTO
66174+ depends on GRKERNSEC_CHROOT
66175+ help
66176+ If you say Y here, processes inside a chroot will not be allowed to
66177+ mknod. The problem with using mknod inside a chroot is that it
66178+ would allow an attacker to create a device entry that is the same
66179+ as one on the physical root of your system, which could range from
66180+ anything from the console device to a device for your harddrive (which
66181+ they could then use to wipe the drive or steal data). It is recommended
66182+ that you say Y here, unless you run into software incompatibilities.
66183+ If the sysctl option is enabled, a sysctl option with name
66184+ "chroot_deny_mknod" is created.
66185+
66186+config GRKERNSEC_CHROOT_SHMAT
66187+ bool "Deny shmat() out of chroot"
66188+ default y if GRKERNSEC_CONFIG_AUTO
66189+ depends on GRKERNSEC_CHROOT
66190+ help
66191+ If you say Y here, processes inside a chroot will not be able to attach
66192+ to shared memory segments that were created outside of the chroot jail.
66193+ It is recommended that you say Y here. If the sysctl option is enabled,
66194+ a sysctl option with name "chroot_deny_shmat" is created.
66195+
66196+config GRKERNSEC_CHROOT_UNIX
66197+ bool "Deny access to abstract AF_UNIX sockets out of chroot"
66198+ default y if GRKERNSEC_CONFIG_AUTO
66199+ depends on GRKERNSEC_CHROOT
66200+ help
66201+ If you say Y here, processes inside a chroot will not be able to
66202+ connect to abstract (meaning not belonging to a filesystem) Unix
66203+ domain sockets that were bound outside of a chroot. It is recommended
66204+ that you say Y here. If the sysctl option is enabled, a sysctl option
66205+ with name "chroot_deny_unix" is created.
66206+
66207+config GRKERNSEC_CHROOT_FINDTASK
66208+ bool "Protect outside processes"
66209+ default y if GRKERNSEC_CONFIG_AUTO
66210+ depends on GRKERNSEC_CHROOT
66211+ help
66212+ If you say Y here, processes inside a chroot will not be able to
66213+ kill, send signals with fcntl, ptrace, capget, getpgid, setpgid,
66214+ getsid, or view any process outside of the chroot. If the sysctl
66215+ option is enabled, a sysctl option with name "chroot_findtask" is
66216+ created.
66217+
66218+config GRKERNSEC_CHROOT_NICE
66219+ bool "Restrict priority changes"
66220+ default y if GRKERNSEC_CONFIG_AUTO
66221+ depends on GRKERNSEC_CHROOT
66222+ help
66223+ If you say Y here, processes inside a chroot will not be able to raise
66224+ the priority of processes in the chroot, or alter the priority of
66225+ processes outside the chroot. This provides more security than simply
66226+ removing CAP_SYS_NICE from the process' capability set. If the
66227+ sysctl option is enabled, a sysctl option with name "chroot_restrict_nice"
66228+ is created.
66229+
66230+config GRKERNSEC_CHROOT_SYSCTL
66231+ bool "Deny sysctl writes"
66232+ default y if GRKERNSEC_CONFIG_AUTO
66233+ depends on GRKERNSEC_CHROOT
66234+ help
66235+ If you say Y here, an attacker in a chroot will not be able to
66236+ write to sysctl entries, either by sysctl(2) or through a /proc
66237+ interface. It is strongly recommended that you say Y here. If the
66238+ sysctl option is enabled, a sysctl option with name
66239+ "chroot_deny_sysctl" is created.
66240+
66241+config GRKERNSEC_CHROOT_CAPS
66242+ bool "Capability restrictions"
66243+ default y if GRKERNSEC_CONFIG_AUTO
66244+ depends on GRKERNSEC_CHROOT
66245+ help
66246+ If you say Y here, the capabilities on all processes within a
66247+ chroot jail will be lowered to stop module insertion, raw i/o,
66248+ system and net admin tasks, rebooting the system, modifying immutable
66249+ files, modifying IPC owned by another, and changing the system time.
66250+ This is left an option because it can break some apps. Disable this
66251+ if your chrooted apps are having problems performing those kinds of
66252+ tasks. If the sysctl option is enabled, a sysctl option with
66253+ name "chroot_caps" is created.
66254+
66255+config GRKERNSEC_CHROOT_INITRD
66256+ bool "Exempt initrd tasks from restrictions"
66257+ default y if GRKERNSEC_CONFIG_AUTO
66258+ depends on GRKERNSEC_CHROOT && BLK_DEV_INITRD
66259+ help
66260+ If you say Y here, tasks started prior to init will be exempted from
66261+ grsecurity's chroot restrictions. This option is mainly meant to
66262+ resolve Plymouth's performing privileged operations unnecessarily
66263+ in a chroot.
66264+
66265+endmenu
66266+menu "Kernel Auditing"
66267+depends on GRKERNSEC
66268+
66269+config GRKERNSEC_AUDIT_GROUP
66270+ bool "Single group for auditing"
66271+ help
66272+ If you say Y here, the exec and chdir logging features will only operate
66273+ on a group you specify. This option is recommended if you only want to
66274+ watch certain users instead of having a large amount of logs from the
66275+ entire system. If the sysctl option is enabled, a sysctl option with
66276+ name "audit_group" is created.
66277+
66278+config GRKERNSEC_AUDIT_GID
66279+ int "GID for auditing"
66280+ depends on GRKERNSEC_AUDIT_GROUP
66281+ default 1007
66282+
66283+config GRKERNSEC_EXECLOG
66284+ bool "Exec logging"
66285+ help
66286+ If you say Y here, all execve() calls will be logged (since the
66287+ other exec*() calls are frontends to execve(), all execution
66288+ will be logged). Useful for shell-servers that like to keep track
66289+ of their users. If the sysctl option is enabled, a sysctl option with
66290+ name "exec_logging" is created.
66291+ WARNING: This option when enabled will produce a LOT of logs, especially
66292+ on an active system.
66293+
66294+config GRKERNSEC_RESLOG
66295+ bool "Resource logging"
66296+ default y if GRKERNSEC_CONFIG_AUTO
66297+ help
66298+ If you say Y here, all attempts to overstep resource limits will
66299+ be logged with the resource name, the requested size, and the current
66300+ limit. It is highly recommended that you say Y here. If the sysctl
66301+ option is enabled, a sysctl option with name "resource_logging" is
66302+ created. If the RBAC system is enabled, the sysctl value is ignored.
66303+
66304+config GRKERNSEC_CHROOT_EXECLOG
66305+ bool "Log execs within chroot"
66306+ help
66307+ If you say Y here, all executions inside a chroot jail will be logged
66308+ to syslog. This can cause a large amount of logs if certain
66309+ applications (eg. djb's daemontools) are installed on the system, and
66310+ is therefore left as an option. If the sysctl option is enabled, a
66311+ sysctl option with name "chroot_execlog" is created.
66312+
66313+config GRKERNSEC_AUDIT_PTRACE
66314+ bool "Ptrace logging"
66315+ help
66316+ If you say Y here, all attempts to attach to a process via ptrace
66317+ will be logged. If the sysctl option is enabled, a sysctl option
66318+ with name "audit_ptrace" is created.
66319+
66320+config GRKERNSEC_AUDIT_CHDIR
66321+ bool "Chdir logging"
66322+ help
66323+ If you say Y here, all chdir() calls will be logged. If the sysctl
66324+ option is enabled, a sysctl option with name "audit_chdir" is created.
66325+
66326+config GRKERNSEC_AUDIT_MOUNT
66327+ bool "(Un)Mount logging"
66328+ help
66329+ If you say Y here, all mounts and unmounts will be logged. If the
66330+ sysctl option is enabled, a sysctl option with name "audit_mount" is
66331+ created.
66332+
66333+config GRKERNSEC_SIGNAL
66334+ bool "Signal logging"
66335+ default y if GRKERNSEC_CONFIG_AUTO
66336+ help
66337+ If you say Y here, certain important signals will be logged, such as
66338+ SIGSEGV, which will as a result inform you of when a error in a program
66339+ occurred, which in some cases could mean a possible exploit attempt.
66340+ If the sysctl option is enabled, a sysctl option with name
66341+ "signal_logging" is created.
66342+
66343+config GRKERNSEC_FORKFAIL
66344+ bool "Fork failure logging"
66345+ help
66346+ If you say Y here, all failed fork() attempts will be logged.
66347+ This could suggest a fork bomb, or someone attempting to overstep
66348+ their process limit. If the sysctl option is enabled, a sysctl option
66349+ with name "forkfail_logging" is created.
66350+
66351+config GRKERNSEC_TIME
66352+ bool "Time change logging"
66353+ default y if GRKERNSEC_CONFIG_AUTO
66354+ help
66355+ If you say Y here, any changes of the system clock will be logged.
66356+ If the sysctl option is enabled, a sysctl option with name
66357+ "timechange_logging" is created.
66358+
66359+config GRKERNSEC_PROC_IPADDR
66360+ bool "/proc/<pid>/ipaddr support"
66361+ default y if GRKERNSEC_CONFIG_AUTO
66362+ help
66363+ If you say Y here, a new entry will be added to each /proc/<pid>
66364+ directory that contains the IP address of the person using the task.
66365+ The IP is carried across local TCP and AF_UNIX stream sockets.
66366+ This information can be useful for IDS/IPSes to perform remote response
66367+ to a local attack. The entry is readable by only the owner of the
66368+ process (and root if he has CAP_DAC_OVERRIDE, which can be removed via
66369+ the RBAC system), and thus does not create privacy concerns.
66370+
66371+config GRKERNSEC_RWXMAP_LOG
66372+ bool 'Denied RWX mmap/mprotect logging'
66373+ default y if GRKERNSEC_CONFIG_AUTO
66374+ depends on PAX_MPROTECT && !PAX_EMUPLT && !PAX_EMUSIGRT
66375+ help
66376+ If you say Y here, calls to mmap() and mprotect() with explicit
66377+ usage of PROT_WRITE and PROT_EXEC together will be logged when
66378+ denied by the PAX_MPROTECT feature. This feature will also
66379+ log other problematic scenarios that can occur when PAX_MPROTECT
66380+ is enabled on a binary, like textrels and PT_GNU_STACK. If the
66381+ sysctl option is enabled, a sysctl option with name "rwxmap_logging"
66382+ is created.
66383+
66384+endmenu
66385+
66386+menu "Executable Protections"
66387+depends on GRKERNSEC
66388+
66389+config GRKERNSEC_DMESG
66390+ bool "Dmesg(8) restriction"
66391+ default y if GRKERNSEC_CONFIG_AUTO
66392+ help
66393+ If you say Y here, non-root users will not be able to use dmesg(8)
66394+ to view the contents of the kernel's circular log buffer.
66395+ The kernel's log buffer often contains kernel addresses and other
66396+ identifying information useful to an attacker in fingerprinting a
66397+ system for a targeted exploit.
66398+ If the sysctl option is enabled, a sysctl option with name "dmesg" is
66399+ created.
66400+
66401+config GRKERNSEC_HARDEN_PTRACE
66402+ bool "Deter ptrace-based process snooping"
66403+ default y if GRKERNSEC_CONFIG_AUTO
66404+ help
66405+ If you say Y here, TTY sniffers and other malicious monitoring
66406+ programs implemented through ptrace will be defeated. If you
66407+ have been using the RBAC system, this option has already been
66408+ enabled for several years for all users, with the ability to make
66409+ fine-grained exceptions.
66410+
66411+ This option only affects the ability of non-root users to ptrace
66412+ processes that are not a descendent of the ptracing process.
66413+ This means that strace ./binary and gdb ./binary will still work,
66414+ but attaching to arbitrary processes will not. If the sysctl
66415+ option is enabled, a sysctl option with name "harden_ptrace" is
66416+ created.
66417+
66418+config GRKERNSEC_PTRACE_READEXEC
66419+ bool "Require read access to ptrace sensitive binaries"
66420+ default y if GRKERNSEC_CONFIG_AUTO
66421+ help
66422+ If you say Y here, unprivileged users will not be able to ptrace unreadable
66423+ binaries. This option is useful in environments that
66424+ remove the read bits (e.g. file mode 4711) from suid binaries to
66425+ prevent infoleaking of their contents. This option adds
66426+ consistency to the use of that file mode, as the binary could normally
66427+ be read out when run without privileges while ptracing.
66428+
66429+ If the sysctl option is enabled, a sysctl option with name "ptrace_readexec"
66430+ is created.
66431+
66432+config GRKERNSEC_SETXID
66433+ bool "Enforce consistent multithreaded privileges"
66434+ default y if GRKERNSEC_CONFIG_AUTO
66435+ depends on (X86 || SPARC64 || PPC || ARM || MIPS)
66436+ help
66437+ If you say Y here, a change from a root uid to a non-root uid
66438+ in a multithreaded application will cause the resulting uids,
66439+ gids, supplementary groups, and capabilities in that thread
66440+ to be propagated to the other threads of the process. In most
66441+ cases this is unnecessary, as glibc will emulate this behavior
66442+ on behalf of the application. Other libcs do not act in the
66443+ same way, allowing the other threads of the process to continue
66444+ running with root privileges. If the sysctl option is enabled,
66445+ a sysctl option with name "consistent_setxid" is created.
66446+
66447+config GRKERNSEC_HARDEN_IPC
66448+ bool "Disallow access to overly-permissive IPC objects"
66449+ default y if GRKERNSEC_CONFIG_AUTO
66450+ depends on SYSVIPC
66451+ help
66452+ If you say Y here, access to overly-permissive IPC objects (shared
66453+ memory, message queues, and semaphores) will be denied for processes
66454+ given the following criteria beyond normal permission checks:
66455+ 1) If the IPC object is world-accessible and the euid doesn't match
66456+ that of the creator or current uid for the IPC object
66457+ 2) If the IPC object is group-accessible and the egid doesn't
66458+ match that of the creator or current gid for the IPC object
66459+ It's a common error to grant too much permission to these objects,
66460+ with impact ranging from denial of service and information leaking to
66461+ privilege escalation. This feature was developed in response to
66462+ research by Tim Brown:
66463+ http://labs.portcullis.co.uk/whitepapers/memory-squatting-attacks-on-system-v-shared-memory/
66464+ who found hundreds of such insecure usages. Processes with
66465+ CAP_IPC_OWNER are still permitted to access these IPC objects.
66466+ If the sysctl option is enabled, a sysctl option with name
66467+ "harden_ipc" is created.
66468+
66469+config GRKERNSEC_TPE
66470+ bool "Trusted Path Execution (TPE)"
66471+ default y if GRKERNSEC_CONFIG_AUTO && GRKERNSEC_CONFIG_SERVER
66472+ help
66473+ If you say Y here, you will be able to choose a gid to add to the
66474+ supplementary groups of users you want to mark as "untrusted."
66475+ These users will not be able to execute any files that are not in
66476+ root-owned directories writable only by root. If the sysctl option
66477+ is enabled, a sysctl option with name "tpe" is created.
66478+
66479+config GRKERNSEC_TPE_ALL
66480+ bool "Partially restrict all non-root users"
66481+ depends on GRKERNSEC_TPE
66482+ help
66483+ If you say Y here, all non-root users will be covered under
66484+ a weaker TPE restriction. This is separate from, and in addition to,
66485+ the main TPE options that you have selected elsewhere. Thus, if a
66486+ "trusted" GID is chosen, this restriction applies to even that GID.
66487+ Under this restriction, all non-root users will only be allowed to
66488+ execute files in directories they own that are not group or
66489+ world-writable, or in directories owned by root and writable only by
66490+ root. If the sysctl option is enabled, a sysctl option with name
66491+ "tpe_restrict_all" is created.
66492+
66493+config GRKERNSEC_TPE_INVERT
66494+ bool "Invert GID option"
66495+ depends on GRKERNSEC_TPE
66496+ help
66497+ If you say Y here, the group you specify in the TPE configuration will
66498+ decide what group TPE restrictions will be *disabled* for. This
66499+ option is useful if you want TPE restrictions to be applied to most
66500+ users on the system. If the sysctl option is enabled, a sysctl option
66501+ with name "tpe_invert" is created. Unlike other sysctl options, this
66502+ entry will default to on for backward-compatibility.
66503+
66504+config GRKERNSEC_TPE_GID
66505+ int
66506+ default GRKERNSEC_TPE_UNTRUSTED_GID if (GRKERNSEC_TPE && !GRKERNSEC_TPE_INVERT)
66507+ default GRKERNSEC_TPE_TRUSTED_GID if (GRKERNSEC_TPE && GRKERNSEC_TPE_INVERT)
66508+
66509+config GRKERNSEC_TPE_UNTRUSTED_GID
66510+ int "GID for TPE-untrusted users"
66511+ depends on GRKERNSEC_TPE && !GRKERNSEC_TPE_INVERT
66512+ default 1005
66513+ help
66514+ Setting this GID determines what group TPE restrictions will be
66515+ *enabled* for. If the sysctl option is enabled, a sysctl option
66516+ with name "tpe_gid" is created.
66517+
66518+config GRKERNSEC_TPE_TRUSTED_GID
66519+ int "GID for TPE-trusted users"
66520+ depends on GRKERNSEC_TPE && GRKERNSEC_TPE_INVERT
66521+ default 1005
66522+ help
66523+ Setting this GID determines what group TPE restrictions will be
66524+ *disabled* for. If the sysctl option is enabled, a sysctl option
66525+ with name "tpe_gid" is created.
66526+
66527+endmenu
66528+menu "Network Protections"
66529+depends on GRKERNSEC
66530+
66531+config GRKERNSEC_RANDNET
66532+ bool "Larger entropy pools"
66533+ default y if GRKERNSEC_CONFIG_AUTO
66534+ help
66535+ If you say Y here, the entropy pools used for many features of Linux
66536+ and grsecurity will be doubled in size. Since several grsecurity
66537+ features use additional randomness, it is recommended that you say Y
66538+ here. Saying Y here has a similar effect as modifying
66539+ /proc/sys/kernel/random/poolsize.
66540+
66541+config GRKERNSEC_BLACKHOLE
66542+ bool "TCP/UDP blackhole and LAST_ACK DoS prevention"
66543+ default y if GRKERNSEC_CONFIG_AUTO
66544+ depends on NET
66545+ help
66546+ If you say Y here, neither TCP resets nor ICMP
66547+ destination-unreachable packets will be sent in response to packets
66548+ sent to ports for which no associated listening process exists.
66549+ This feature supports both IPV4 and IPV6 and exempts the
66550+ loopback interface from blackholing. Enabling this feature
66551+ makes a host more resilient to DoS attacks and reduces network
66552+ visibility against scanners.
66553+
66554+ The blackhole feature as-implemented is equivalent to the FreeBSD
66555+ blackhole feature, as it prevents RST responses to all packets, not
66556+ just SYNs. Under most application behavior this causes no
66557+ problems, but applications (like haproxy) may not close certain
66558+ connections in a way that cleanly terminates them on the remote
66559+ end, leaving the remote host in LAST_ACK state. Because of this
66560+ side-effect and to prevent intentional LAST_ACK DoSes, this
66561+ feature also adds automatic mitigation against such attacks.
66562+ The mitigation drastically reduces the amount of time a socket
66563+ can spend in LAST_ACK state. If you're using haproxy and not
66564+ all servers it connects to have this option enabled, consider
66565+ disabling this feature on the haproxy host.
66566+
66567+ If the sysctl option is enabled, two sysctl options with names
66568+ "ip_blackhole" and "lastack_retries" will be created.
66569+ While "ip_blackhole" takes the standard zero/non-zero on/off
66570+ toggle, "lastack_retries" uses the same kinds of values as
66571+ "tcp_retries1" and "tcp_retries2". The default value of 4
66572+ prevents a socket from lasting more than 45 seconds in LAST_ACK
66573+ state.
66574+
66575+config GRKERNSEC_NO_SIMULT_CONNECT
66576+ bool "Disable TCP Simultaneous Connect"
66577+ default y if GRKERNSEC_CONFIG_AUTO
66578+ depends on NET
66579+ help
66580+ If you say Y here, a feature by Willy Tarreau will be enabled that
66581+ removes a weakness in Linux's strict implementation of TCP that
66582+ allows two clients to connect to each other without either entering
66583+ a listening state. The weakness allows an attacker to easily prevent
66584+ a client from connecting to a known server provided the source port
66585+ for the connection is guessed correctly.
66586+
66587+ As the weakness could be used to prevent an antivirus or IPS from
66588+ fetching updates, or prevent an SSL gateway from fetching a CRL,
66589+ it should be eliminated by enabling this option. Though Linux is
66590+ one of few operating systems supporting simultaneous connect, it
66591+ has no legitimate use in practice and is rarely supported by firewalls.
66592+
66593+config GRKERNSEC_SOCKET
66594+ bool "Socket restrictions"
66595+ depends on NET
66596+ help
66597+ If you say Y here, you will be able to choose from several options.
66598+ If you assign a GID on your system and add it to the supplementary
66599+ groups of users you want to restrict socket access to, this patch
66600+ will perform up to three things, based on the option(s) you choose.
66601+
66602+config GRKERNSEC_SOCKET_ALL
66603+ bool "Deny any sockets to group"
66604+ depends on GRKERNSEC_SOCKET
66605+ help
66606+ If you say Y here, you will be able to choose a GID of whose users will
66607+ be unable to connect to other hosts from your machine or run server
66608+ applications from your machine. If the sysctl option is enabled, a
66609+ sysctl option with name "socket_all" is created.
66610+
66611+config GRKERNSEC_SOCKET_ALL_GID
66612+ int "GID to deny all sockets for"
66613+ depends on GRKERNSEC_SOCKET_ALL
66614+ default 1004
66615+ help
66616+ Here you can choose the GID to disable socket access for. Remember to
66617+ add the users you want socket access disabled for to the GID
66618+ specified here. If the sysctl option is enabled, a sysctl option
66619+ with name "socket_all_gid" is created.
66620+
66621+config GRKERNSEC_SOCKET_CLIENT
66622+ bool "Deny client sockets to group"
66623+ depends on GRKERNSEC_SOCKET
66624+ help
66625+ If you say Y here, you will be able to choose a GID of whose users will
66626+ be unable to connect to other hosts from your machine, but will be
66627+ able to run servers. If this option is enabled, all users in the group
66628+ you specify will have to use passive mode when initiating ftp transfers
66629+ from the shell on your machine. If the sysctl option is enabled, a
66630+ sysctl option with name "socket_client" is created.
66631+
66632+config GRKERNSEC_SOCKET_CLIENT_GID
66633+ int "GID to deny client sockets for"
66634+ depends on GRKERNSEC_SOCKET_CLIENT
66635+ default 1003
66636+ help
66637+ Here you can choose the GID to disable client socket access for.
66638+ Remember to add the users you want client socket access disabled for to
66639+ the GID specified here. If the sysctl option is enabled, a sysctl
66640+ option with name "socket_client_gid" is created.
66641+
66642+config GRKERNSEC_SOCKET_SERVER
66643+ bool "Deny server sockets to group"
66644+ depends on GRKERNSEC_SOCKET
66645+ help
66646+ If you say Y here, you will be able to choose a GID of whose users will
66647+ be unable to run server applications from your machine. If the sysctl
66648+ option is enabled, a sysctl option with name "socket_server" is created.
66649+
66650+config GRKERNSEC_SOCKET_SERVER_GID
66651+ int "GID to deny server sockets for"
66652+ depends on GRKERNSEC_SOCKET_SERVER
66653+ default 1002
66654+ help
66655+ Here you can choose the GID to disable server socket access for.
66656+ Remember to add the users you want server socket access disabled for to
66657+ the GID specified here. If the sysctl option is enabled, a sysctl
66658+ option with name "socket_server_gid" is created.
66659+
66660+endmenu
66661+
66662+menu "Physical Protections"
66663+depends on GRKERNSEC
66664+
66665+config GRKERNSEC_DENYUSB
66666+ bool "Deny new USB connections after toggle"
66667+ default y if GRKERNSEC_CONFIG_AUTO
66668+ depends on SYSCTL && USB_SUPPORT
66669+ help
66670+ If you say Y here, a new sysctl option with name "deny_new_usb"
66671+ will be created. Setting its value to 1 will prevent any new
66672+ USB devices from being recognized by the OS. Any attempted USB
66673+ device insertion will be logged. This option is intended to be
66674+ used against custom USB devices designed to exploit vulnerabilities
66675+ in various USB device drivers.
66676+
66677+ For greatest effectiveness, this sysctl should be set after any
66678+ relevant init scripts. This option is safe to enable in distros
66679+ as each user can choose whether or not to toggle the sysctl.
66680+
66681+config GRKERNSEC_DENYUSB_FORCE
66682+ bool "Reject all USB devices not connected at boot"
66683+ select USB
66684+ depends on GRKERNSEC_DENYUSB
66685+ help
66686+ If you say Y here, a variant of GRKERNSEC_DENYUSB will be enabled
66687+ that doesn't involve a sysctl entry. This option should only be
66688+ enabled if you're sure you want to deny all new USB connections
66689+ at runtime and don't want to modify init scripts. This should not
66690+ be enabled by distros. It forces the core USB code to be built
66691+ into the kernel image so that all devices connected at boot time
66692+ can be recognized and new USB device connections can be prevented
66693+ prior to init running.
66694+
66695+endmenu
66696+
66697+menu "Sysctl Support"
66698+depends on GRKERNSEC && SYSCTL
66699+
66700+config GRKERNSEC_SYSCTL
66701+ bool "Sysctl support"
66702+ default y if GRKERNSEC_CONFIG_AUTO
66703+ help
66704+ If you say Y here, you will be able to change the options that
66705+ grsecurity runs with at bootup, without having to recompile your
66706+ kernel. You can echo values to files in /proc/sys/kernel/grsecurity
66707+ to enable (1) or disable (0) various features. All the sysctl entries
66708+ are mutable until the "grsec_lock" entry is set to a non-zero value.
66709+ All features enabled in the kernel configuration are disabled at boot
66710+ if you do not say Y to the "Turn on features by default" option.
66711+ All options should be set at startup, and the grsec_lock entry should
66712+ be set to a non-zero value after all the options are set.
66713+ *THIS IS EXTREMELY IMPORTANT*
66714+
66715+config GRKERNSEC_SYSCTL_DISTRO
66716+ bool "Extra sysctl support for distro makers (READ HELP)"
66717+ depends on GRKERNSEC_SYSCTL && GRKERNSEC_IO
66718+ help
66719+ If you say Y here, additional sysctl options will be created
66720+ for features that affect processes running as root. Therefore,
66721+ it is critical when using this option that the grsec_lock entry be
66722+ enabled after boot. Only distros with prebuilt kernel packages
66723+ with this option enabled that can ensure grsec_lock is enabled
66724+ after boot should use this option.
66725+ *Failure to set grsec_lock after boot makes all grsec features
66726+ this option covers useless*
66727+
66728+ Currently this option creates the following sysctl entries:
66729+ "Disable Privileged I/O": "disable_priv_io"
66730+
66731+config GRKERNSEC_SYSCTL_ON
66732+ bool "Turn on features by default"
66733+ default y if GRKERNSEC_CONFIG_AUTO
66734+ depends on GRKERNSEC_SYSCTL
66735+ help
66736+ If you say Y here, instead of having all features enabled in the
66737+ kernel configuration disabled at boot time, the features will be
66738+ enabled at boot time. It is recommended you say Y here unless
66739+ there is some reason you would want all sysctl-tunable features to
66740+ be disabled by default. As mentioned elsewhere, it is important
66741+ to enable the grsec_lock entry once you have finished modifying
66742+ the sysctl entries.
66743+
66744+endmenu
66745+menu "Logging Options"
66746+depends on GRKERNSEC
66747+
66748+config GRKERNSEC_FLOODTIME
66749+ int "Seconds in between log messages (minimum)"
66750+ default 10
66751+ help
66752+ This option allows you to enforce the number of seconds between
66753+ grsecurity log messages. The default should be suitable for most
66754+ people, however, if you choose to change it, choose a value small enough
66755+ to allow informative logs to be produced, but large enough to
66756+ prevent flooding.
66757+
66758+ Setting both this value and GRKERNSEC_FLOODBURST to 0 will disable
66759+ any rate limiting on grsecurity log messages.
66760+
66761+config GRKERNSEC_FLOODBURST
66762+ int "Number of messages in a burst (maximum)"
66763+ default 6
66764+ help
66765+ This option allows you to choose the maximum number of messages allowed
66766+ within the flood time interval you chose in a separate option. The
66767+ default should be suitable for most people, however if you find that
66768+ many of your logs are being interpreted as flooding, you may want to
66769+ raise this value.
66770+
66771+ Setting both this value and GRKERNSEC_FLOODTIME to 0 will disable
66772+ any rate limiting on grsecurity log messages.
66773+
66774+endmenu
66775diff --git a/grsecurity/Makefile b/grsecurity/Makefile
66776new file mode 100644
66777index 0000000..30ababb
66778--- /dev/null
66779+++ b/grsecurity/Makefile
66780@@ -0,0 +1,54 @@
66781+# grsecurity – access control and security hardening for Linux
66782+# All code in this directory and various hooks located throughout the Linux kernel are
66783+# Copyright (C) 2001-2014 Bradley Spengler, Open Source Security, Inc.
66784+# http://www.grsecurity.net spender@grsecurity.net
66785+#
66786+# This program is free software; you can redistribute it and/or
66787+# modify it under the terms of the GNU General Public License version 2
66788+# as published by the Free Software Foundation.
66789+#
66790+# This program is distributed in the hope that it will be useful,
66791+# but WITHOUT ANY WARRANTY; without even the implied warranty of
66792+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
66793+# GNU General Public License for more details.
66794+#
66795+# You should have received a copy of the GNU General Public License
66796+# along with this program; if not, write to the Free Software
66797+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
66798+
66799+KBUILD_CFLAGS += -Werror
66800+
66801+obj-y = grsec_chdir.o grsec_chroot.o grsec_exec.o grsec_fifo.o grsec_fork.o \
66802+ grsec_mount.o grsec_sig.o grsec_sysctl.o \
66803+ grsec_time.o grsec_tpe.o grsec_link.o grsec_pax.o grsec_ptrace.o \
66804+ grsec_usb.o grsec_ipc.o grsec_proc.o
66805+
66806+obj-$(CONFIG_GRKERNSEC) += grsec_init.o grsum.o gracl.o gracl_segv.o \
66807+ gracl_cap.o gracl_alloc.o gracl_shm.o grsec_mem.o gracl_fs.o \
66808+ gracl_learn.o grsec_log.o gracl_policy.o
66809+ifdef CONFIG_COMPAT
66810+obj-$(CONFIG_GRKERNSEC) += gracl_compat.o
66811+endif
66812+
66813+obj-$(CONFIG_GRKERNSEC_RESLOG) += gracl_res.o
66814+
66815+ifdef CONFIG_NET
66816+obj-y += grsec_sock.o
66817+obj-$(CONFIG_GRKERNSEC) += gracl_ip.o
66818+endif
66819+
66820+ifndef CONFIG_GRKERNSEC
66821+obj-y += grsec_disabled.o
66822+endif
66823+
66824+ifdef CONFIG_GRKERNSEC_HIDESYM
66825+extra-y := grsec_hidesym.o
66826+$(obj)/grsec_hidesym.o:
66827+ @-chmod -f 500 /boot
66828+ @-chmod -f 500 /lib/modules
66829+ @-chmod -f 500 /lib64/modules
66830+ @-chmod -f 500 /lib32/modules
66831+ @-chmod -f 700 .
66832+ @-chmod -f 700 $(objtree)
66833+ @echo ' grsec: protected kernel image paths'
66834+endif
66835diff --git a/grsecurity/gracl.c b/grsecurity/gracl.c
66836new file mode 100644
66837index 0000000..58223f6
66838--- /dev/null
66839+++ b/grsecurity/gracl.c
66840@@ -0,0 +1,2702 @@
66841+#include <linux/kernel.h>
66842+#include <linux/module.h>
66843+#include <linux/sched.h>
66844+#include <linux/mm.h>
66845+#include <linux/file.h>
66846+#include <linux/fs.h>
66847+#include <linux/namei.h>
66848+#include <linux/mount.h>
66849+#include <linux/tty.h>
66850+#include <linux/proc_fs.h>
66851+#include <linux/lglock.h>
66852+#include <linux/slab.h>
66853+#include <linux/vmalloc.h>
66854+#include <linux/types.h>
66855+#include <linux/sysctl.h>
66856+#include <linux/netdevice.h>
66857+#include <linux/ptrace.h>
66858+#include <linux/gracl.h>
66859+#include <linux/gralloc.h>
66860+#include <linux/security.h>
66861+#include <linux/grinternal.h>
66862+#include <linux/pid_namespace.h>
66863+#include <linux/stop_machine.h>
66864+#include <linux/fdtable.h>
66865+#include <linux/percpu.h>
66866+#include <linux/lglock.h>
66867+#include <linux/hugetlb.h>
66868+#include <linux/posix-timers.h>
66869+#include <linux/prefetch.h>
66870+#if defined(CONFIG_BTRFS_FS) || defined(CONFIG_BTRFS_FS_MODULE)
66871+#include <linux/magic.h>
66872+#include <linux/pagemap.h>
66873+#include "../fs/btrfs/async-thread.h"
66874+#include "../fs/btrfs/ctree.h"
66875+#include "../fs/btrfs/btrfs_inode.h"
66876+#endif
66877+#include "../fs/mount.h"
66878+
66879+#include <asm/uaccess.h>
66880+#include <asm/errno.h>
66881+#include <asm/mman.h>
66882+
66883+#define FOR_EACH_ROLE_START(role) \
66884+ role = running_polstate.role_list; \
66885+ while (role) {
66886+
66887+#define FOR_EACH_ROLE_END(role) \
66888+ role = role->prev; \
66889+ }
66890+
66891+extern struct path gr_real_root;
66892+
66893+static struct gr_policy_state running_polstate;
66894+struct gr_policy_state *polstate = &running_polstate;
66895+extern struct gr_alloc_state *current_alloc_state;
66896+
66897+extern char *gr_shared_page[4];
66898+DEFINE_RWLOCK(gr_inode_lock);
66899+
66900+static unsigned int gr_status __read_only = GR_STATUS_INIT;
66901+
66902+#ifdef CONFIG_NET
66903+extern struct vfsmount *sock_mnt;
66904+#endif
66905+
66906+extern struct vfsmount *pipe_mnt;
66907+extern struct vfsmount *shm_mnt;
66908+
66909+#ifdef CONFIG_HUGETLBFS
66910+extern struct vfsmount *hugetlbfs_vfsmount[HUGE_MAX_HSTATE];
66911+#endif
66912+
66913+extern u16 acl_sp_role_value;
66914+extern struct acl_object_label *fakefs_obj_rw;
66915+extern struct acl_object_label *fakefs_obj_rwx;
66916+
66917+int gr_acl_is_enabled(void)
66918+{
66919+ return (gr_status & GR_READY);
66920+}
66921+
66922+void gr_enable_rbac_system(void)
66923+{
66924+ pax_open_kernel();
66925+ gr_status |= GR_READY;
66926+ pax_close_kernel();
66927+}
66928+
66929+int gr_rbac_disable(void *unused)
66930+{
66931+ pax_open_kernel();
66932+ gr_status &= ~GR_READY;
66933+ pax_close_kernel();
66934+
66935+ return 0;
66936+}
66937+
66938+static inline dev_t __get_dev(const struct dentry *dentry)
66939+{
66940+#if defined(CONFIG_BTRFS_FS) || defined(CONFIG_BTRFS_FS_MODULE)
66941+ if (dentry->d_sb->s_magic == BTRFS_SUPER_MAGIC)
66942+ return BTRFS_I(dentry->d_inode)->root->anon_dev;
66943+ else
66944+#endif
66945+ return dentry->d_sb->s_dev;
66946+}
66947+
66948+dev_t gr_get_dev_from_dentry(struct dentry *dentry)
66949+{
66950+ return __get_dev(dentry);
66951+}
66952+
66953+static char gr_task_roletype_to_char(struct task_struct *task)
66954+{
66955+ switch (task->role->roletype &
66956+ (GR_ROLE_DEFAULT | GR_ROLE_USER | GR_ROLE_GROUP |
66957+ GR_ROLE_SPECIAL)) {
66958+ case GR_ROLE_DEFAULT:
66959+ return 'D';
66960+ case GR_ROLE_USER:
66961+ return 'U';
66962+ case GR_ROLE_GROUP:
66963+ return 'G';
66964+ case GR_ROLE_SPECIAL:
66965+ return 'S';
66966+ }
66967+
66968+ return 'X';
66969+}
66970+
66971+char gr_roletype_to_char(void)
66972+{
66973+ return gr_task_roletype_to_char(current);
66974+}
66975+
66976+__inline__ int
66977+gr_acl_tpe_check(void)
66978+{
66979+ if (unlikely(!(gr_status & GR_READY)))
66980+ return 0;
66981+ if (current->role->roletype & GR_ROLE_TPE)
66982+ return 1;
66983+ else
66984+ return 0;
66985+}
66986+
66987+int
66988+gr_handle_rawio(const struct inode *inode)
66989+{
66990+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
66991+ if (inode && (S_ISBLK(inode->i_mode) || (S_ISCHR(inode->i_mode) && imajor(inode) == RAW_MAJOR)) &&
66992+ grsec_enable_chroot_caps && proc_is_chrooted(current) &&
66993+ !capable(CAP_SYS_RAWIO))
66994+ return 1;
66995+#endif
66996+ return 0;
66997+}
66998+
66999+int
67000+gr_streq(const char *a, const char *b, const unsigned int lena, const unsigned int lenb)
67001+{
67002+ if (likely(lena != lenb))
67003+ return 0;
67004+
67005+ return !memcmp(a, b, lena);
67006+}
67007+
67008+static int prepend(char **buffer, int *buflen, const char *str, int namelen)
67009+{
67010+ *buflen -= namelen;
67011+ if (*buflen < 0)
67012+ return -ENAMETOOLONG;
67013+ *buffer -= namelen;
67014+ memcpy(*buffer, str, namelen);
67015+ return 0;
67016+}
67017+
67018+static int prepend_name(char **buffer, int *buflen, struct qstr *name)
67019+{
67020+ return prepend(buffer, buflen, name->name, name->len);
67021+}
67022+
67023+static int prepend_path(const struct path *path, struct path *root,
67024+ char **buffer, int *buflen)
67025+{
67026+ struct dentry *dentry = path->dentry;
67027+ struct vfsmount *vfsmnt = path->mnt;
67028+ struct mount *mnt = real_mount(vfsmnt);
67029+ bool slash = false;
67030+ int error = 0;
67031+
67032+ while (dentry != root->dentry || vfsmnt != root->mnt) {
67033+ struct dentry * parent;
67034+
67035+ if (dentry == vfsmnt->mnt_root || IS_ROOT(dentry)) {
67036+ /* Global root? */
67037+ if (!mnt_has_parent(mnt)) {
67038+ goto out;
67039+ }
67040+ dentry = mnt->mnt_mountpoint;
67041+ mnt = mnt->mnt_parent;
67042+ vfsmnt = &mnt->mnt;
67043+ continue;
67044+ }
67045+ parent = dentry->d_parent;
67046+ prefetch(parent);
67047+ spin_lock(&dentry->d_lock);
67048+ error = prepend_name(buffer, buflen, &dentry->d_name);
67049+ spin_unlock(&dentry->d_lock);
67050+ if (!error)
67051+ error = prepend(buffer, buflen, "/", 1);
67052+ if (error)
67053+ break;
67054+
67055+ slash = true;
67056+ dentry = parent;
67057+ }
67058+
67059+out:
67060+ if (!error && !slash)
67061+ error = prepend(buffer, buflen, "/", 1);
67062+
67063+ return error;
67064+}
67065+
67066+/* this must be called with mount_lock and rename_lock held */
67067+
67068+static char *__our_d_path(const struct path *path, struct path *root,
67069+ char *buf, int buflen)
67070+{
67071+ char *res = buf + buflen;
67072+ int error;
67073+
67074+ prepend(&res, &buflen, "\0", 1);
67075+ error = prepend_path(path, root, &res, &buflen);
67076+ if (error)
67077+ return ERR_PTR(error);
67078+
67079+ return res;
67080+}
67081+
67082+static char *
67083+gen_full_path(struct path *path, struct path *root, char *buf, int buflen)
67084+{
67085+ char *retval;
67086+
67087+ retval = __our_d_path(path, root, buf, buflen);
67088+ if (unlikely(IS_ERR(retval)))
67089+ retval = strcpy(buf, "<path too long>");
67090+ else if (unlikely(retval[1] == '/' && retval[2] == '\0'))
67091+ retval[1] = '\0';
67092+
67093+ return retval;
67094+}
67095+
67096+static char *
67097+__d_real_path(const struct dentry *dentry, const struct vfsmount *vfsmnt,
67098+ char *buf, int buflen)
67099+{
67100+ struct path path;
67101+ char *res;
67102+
67103+ path.dentry = (struct dentry *)dentry;
67104+ path.mnt = (struct vfsmount *)vfsmnt;
67105+
67106+ /* we can use gr_real_root.dentry, gr_real_root.mnt, because this is only called
67107+ by the RBAC system */
67108+ res = gen_full_path(&path, &gr_real_root, buf, buflen);
67109+
67110+ return res;
67111+}
67112+
67113+static char *
67114+d_real_path(const struct dentry *dentry, const struct vfsmount *vfsmnt,
67115+ char *buf, int buflen)
67116+{
67117+ char *res;
67118+ struct path path;
67119+ struct path root;
67120+ struct task_struct *reaper = init_pid_ns.child_reaper;
67121+
67122+ path.dentry = (struct dentry *)dentry;
67123+ path.mnt = (struct vfsmount *)vfsmnt;
67124+
67125+ /* we can't use gr_real_root.dentry, gr_real_root.mnt, because they belong only to the RBAC system */
67126+ get_fs_root(reaper->fs, &root);
67127+
67128+ read_seqlock_excl(&mount_lock);
67129+ write_seqlock(&rename_lock);
67130+ res = gen_full_path(&path, &root, buf, buflen);
67131+ write_sequnlock(&rename_lock);
67132+ read_sequnlock_excl(&mount_lock);
67133+
67134+ path_put(&root);
67135+ return res;
67136+}
67137+
67138+char *
67139+gr_to_filename_rbac(const struct dentry *dentry, const struct vfsmount *mnt)
67140+{
67141+ char *ret;
67142+ read_seqlock_excl(&mount_lock);
67143+ write_seqlock(&rename_lock);
67144+ ret = __d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[0],smp_processor_id()),
67145+ PAGE_SIZE);
67146+ write_sequnlock(&rename_lock);
67147+ read_sequnlock_excl(&mount_lock);
67148+ return ret;
67149+}
67150+
67151+static char *
67152+gr_to_proc_filename_rbac(const struct dentry *dentry, const struct vfsmount *mnt)
67153+{
67154+ char *ret;
67155+ char *buf;
67156+ int buflen;
67157+
67158+ read_seqlock_excl(&mount_lock);
67159+ write_seqlock(&rename_lock);
67160+ buf = per_cpu_ptr(gr_shared_page[0], smp_processor_id());
67161+ ret = __d_real_path(dentry, mnt, buf, PAGE_SIZE - 6);
67162+ buflen = (int)(ret - buf);
67163+ if (buflen >= 5)
67164+ prepend(&ret, &buflen, "/proc", 5);
67165+ else
67166+ ret = strcpy(buf, "<path too long>");
67167+ write_sequnlock(&rename_lock);
67168+ read_sequnlock_excl(&mount_lock);
67169+ return ret;
67170+}
67171+
67172+char *
67173+gr_to_filename_nolock(const struct dentry *dentry, const struct vfsmount *mnt)
67174+{
67175+ return __d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[0],smp_processor_id()),
67176+ PAGE_SIZE);
67177+}
67178+
67179+char *
67180+gr_to_filename(const struct dentry *dentry, const struct vfsmount *mnt)
67181+{
67182+ return d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[0], smp_processor_id()),
67183+ PAGE_SIZE);
67184+}
67185+
67186+char *
67187+gr_to_filename1(const struct dentry *dentry, const struct vfsmount *mnt)
67188+{
67189+ return d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[1], smp_processor_id()),
67190+ PAGE_SIZE);
67191+}
67192+
67193+char *
67194+gr_to_filename2(const struct dentry *dentry, const struct vfsmount *mnt)
67195+{
67196+ return d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[2], smp_processor_id()),
67197+ PAGE_SIZE);
67198+}
67199+
67200+char *
67201+gr_to_filename3(const struct dentry *dentry, const struct vfsmount *mnt)
67202+{
67203+ return d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[3], smp_processor_id()),
67204+ PAGE_SIZE);
67205+}
67206+
67207+__inline__ __u32
67208+to_gr_audit(const __u32 reqmode)
67209+{
67210+ /* masks off auditable permission flags, then shifts them to create
67211+ auditing flags, and adds the special case of append auditing if
67212+ we're requesting write */
67213+ return (((reqmode & ~GR_AUDITS) << 10) | ((reqmode & GR_WRITE) ? GR_AUDIT_APPEND : 0));
67214+}
67215+
67216+struct acl_role_label *
67217+__lookup_acl_role_label(const struct gr_policy_state *state, const struct task_struct *task, const uid_t uid,
67218+ const gid_t gid)
67219+{
67220+ unsigned int index = gr_rhash(uid, GR_ROLE_USER, state->acl_role_set.r_size);
67221+ struct acl_role_label *match;
67222+ struct role_allowed_ip *ipp;
67223+ unsigned int x;
67224+ u32 curr_ip = task->signal->saved_ip;
67225+
67226+ match = state->acl_role_set.r_hash[index];
67227+
67228+ while (match) {
67229+ if ((match->roletype & (GR_ROLE_DOMAIN | GR_ROLE_USER)) == (GR_ROLE_DOMAIN | GR_ROLE_USER)) {
67230+ for (x = 0; x < match->domain_child_num; x++) {
67231+ if (match->domain_children[x] == uid)
67232+ goto found;
67233+ }
67234+ } else if (match->uidgid == uid && match->roletype & GR_ROLE_USER)
67235+ break;
67236+ match = match->next;
67237+ }
67238+found:
67239+ if (match == NULL) {
67240+ try_group:
67241+ index = gr_rhash(gid, GR_ROLE_GROUP, state->acl_role_set.r_size);
67242+ match = state->acl_role_set.r_hash[index];
67243+
67244+ while (match) {
67245+ if ((match->roletype & (GR_ROLE_DOMAIN | GR_ROLE_GROUP)) == (GR_ROLE_DOMAIN | GR_ROLE_GROUP)) {
67246+ for (x = 0; x < match->domain_child_num; x++) {
67247+ if (match->domain_children[x] == gid)
67248+ goto found2;
67249+ }
67250+ } else if (match->uidgid == gid && match->roletype & GR_ROLE_GROUP)
67251+ break;
67252+ match = match->next;
67253+ }
67254+found2:
67255+ if (match == NULL)
67256+ match = state->default_role;
67257+ if (match->allowed_ips == NULL)
67258+ return match;
67259+ else {
67260+ for (ipp = match->allowed_ips; ipp; ipp = ipp->next) {
67261+ if (likely
67262+ ((ntohl(curr_ip) & ipp->netmask) ==
67263+ (ntohl(ipp->addr) & ipp->netmask)))
67264+ return match;
67265+ }
67266+ match = state->default_role;
67267+ }
67268+ } else if (match->allowed_ips == NULL) {
67269+ return match;
67270+ } else {
67271+ for (ipp = match->allowed_ips; ipp; ipp = ipp->next) {
67272+ if (likely
67273+ ((ntohl(curr_ip) & ipp->netmask) ==
67274+ (ntohl(ipp->addr) & ipp->netmask)))
67275+ return match;
67276+ }
67277+ goto try_group;
67278+ }
67279+
67280+ return match;
67281+}
67282+
67283+static struct acl_role_label *
67284+lookup_acl_role_label(const struct task_struct *task, const uid_t uid,
67285+ const gid_t gid)
67286+{
67287+ return __lookup_acl_role_label(&running_polstate, task, uid, gid);
67288+}
67289+
67290+struct acl_subject_label *
67291+lookup_acl_subj_label(const ino_t ino, const dev_t dev,
67292+ const struct acl_role_label *role)
67293+{
67294+ unsigned int index = gr_fhash(ino, dev, role->subj_hash_size);
67295+ struct acl_subject_label *match;
67296+
67297+ match = role->subj_hash[index];
67298+
67299+ while (match && (match->inode != ino || match->device != dev ||
67300+ (match->mode & GR_DELETED))) {
67301+ match = match->next;
67302+ }
67303+
67304+ if (match && !(match->mode & GR_DELETED))
67305+ return match;
67306+ else
67307+ return NULL;
67308+}
67309+
67310+struct acl_subject_label *
67311+lookup_acl_subj_label_deleted(const ino_t ino, const dev_t dev,
67312+ const struct acl_role_label *role)
67313+{
67314+ unsigned int index = gr_fhash(ino, dev, role->subj_hash_size);
67315+ struct acl_subject_label *match;
67316+
67317+ match = role->subj_hash[index];
67318+
67319+ while (match && (match->inode != ino || match->device != dev ||
67320+ !(match->mode & GR_DELETED))) {
67321+ match = match->next;
67322+ }
67323+
67324+ if (match && (match->mode & GR_DELETED))
67325+ return match;
67326+ else
67327+ return NULL;
67328+}
67329+
67330+static struct acl_object_label *
67331+lookup_acl_obj_label(const ino_t ino, const dev_t dev,
67332+ const struct acl_subject_label *subj)
67333+{
67334+ unsigned int index = gr_fhash(ino, dev, subj->obj_hash_size);
67335+ struct acl_object_label *match;
67336+
67337+ match = subj->obj_hash[index];
67338+
67339+ while (match && (match->inode != ino || match->device != dev ||
67340+ (match->mode & GR_DELETED))) {
67341+ match = match->next;
67342+ }
67343+
67344+ if (match && !(match->mode & GR_DELETED))
67345+ return match;
67346+ else
67347+ return NULL;
67348+}
67349+
67350+static struct acl_object_label *
67351+lookup_acl_obj_label_create(const ino_t ino, const dev_t dev,
67352+ const struct acl_subject_label *subj)
67353+{
67354+ unsigned int index = gr_fhash(ino, dev, subj->obj_hash_size);
67355+ struct acl_object_label *match;
67356+
67357+ match = subj->obj_hash[index];
67358+
67359+ while (match && (match->inode != ino || match->device != dev ||
67360+ !(match->mode & GR_DELETED))) {
67361+ match = match->next;
67362+ }
67363+
67364+ if (match && (match->mode & GR_DELETED))
67365+ return match;
67366+
67367+ match = subj->obj_hash[index];
67368+
67369+ while (match && (match->inode != ino || match->device != dev ||
67370+ (match->mode & GR_DELETED))) {
67371+ match = match->next;
67372+ }
67373+
67374+ if (match && !(match->mode & GR_DELETED))
67375+ return match;
67376+ else
67377+ return NULL;
67378+}
67379+
67380+struct name_entry *
67381+__lookup_name_entry(const struct gr_policy_state *state, const char *name)
67382+{
67383+ unsigned int len = strlen(name);
67384+ unsigned int key = full_name_hash(name, len);
67385+ unsigned int index = key % state->name_set.n_size;
67386+ struct name_entry *match;
67387+
67388+ match = state->name_set.n_hash[index];
67389+
67390+ while (match && (match->key != key || !gr_streq(match->name, name, match->len, len)))
67391+ match = match->next;
67392+
67393+ return match;
67394+}
67395+
67396+static struct name_entry *
67397+lookup_name_entry(const char *name)
67398+{
67399+ return __lookup_name_entry(&running_polstate, name);
67400+}
67401+
67402+static struct name_entry *
67403+lookup_name_entry_create(const char *name)
67404+{
67405+ unsigned int len = strlen(name);
67406+ unsigned int key = full_name_hash(name, len);
67407+ unsigned int index = key % running_polstate.name_set.n_size;
67408+ struct name_entry *match;
67409+
67410+ match = running_polstate.name_set.n_hash[index];
67411+
67412+ while (match && (match->key != key || !gr_streq(match->name, name, match->len, len) ||
67413+ !match->deleted))
67414+ match = match->next;
67415+
67416+ if (match && match->deleted)
67417+ return match;
67418+
67419+ match = running_polstate.name_set.n_hash[index];
67420+
67421+ while (match && (match->key != key || !gr_streq(match->name, name, match->len, len) ||
67422+ match->deleted))
67423+ match = match->next;
67424+
67425+ if (match && !match->deleted)
67426+ return match;
67427+ else
67428+ return NULL;
67429+}
67430+
67431+static struct inodev_entry *
67432+lookup_inodev_entry(const ino_t ino, const dev_t dev)
67433+{
67434+ unsigned int index = gr_fhash(ino, dev, running_polstate.inodev_set.i_size);
67435+ struct inodev_entry *match;
67436+
67437+ match = running_polstate.inodev_set.i_hash[index];
67438+
67439+ while (match && (match->nentry->inode != ino || match->nentry->device != dev))
67440+ match = match->next;
67441+
67442+ return match;
67443+}
67444+
67445+void
67446+__insert_inodev_entry(const struct gr_policy_state *state, struct inodev_entry *entry)
67447+{
67448+ unsigned int index = gr_fhash(entry->nentry->inode, entry->nentry->device,
67449+ state->inodev_set.i_size);
67450+ struct inodev_entry **curr;
67451+
67452+ entry->prev = NULL;
67453+
67454+ curr = &state->inodev_set.i_hash[index];
67455+ if (*curr != NULL)
67456+ (*curr)->prev = entry;
67457+
67458+ entry->next = *curr;
67459+ *curr = entry;
67460+
67461+ return;
67462+}
67463+
67464+static void
67465+insert_inodev_entry(struct inodev_entry *entry)
67466+{
67467+ __insert_inodev_entry(&running_polstate, entry);
67468+}
67469+
67470+void
67471+insert_acl_obj_label(struct acl_object_label *obj,
67472+ struct acl_subject_label *subj)
67473+{
67474+ unsigned int index =
67475+ gr_fhash(obj->inode, obj->device, subj->obj_hash_size);
67476+ struct acl_object_label **curr;
67477+
67478+ obj->prev = NULL;
67479+
67480+ curr = &subj->obj_hash[index];
67481+ if (*curr != NULL)
67482+ (*curr)->prev = obj;
67483+
67484+ obj->next = *curr;
67485+ *curr = obj;
67486+
67487+ return;
67488+}
67489+
67490+void
67491+insert_acl_subj_label(struct acl_subject_label *obj,
67492+ struct acl_role_label *role)
67493+{
67494+ unsigned int index = gr_fhash(obj->inode, obj->device, role->subj_hash_size);
67495+ struct acl_subject_label **curr;
67496+
67497+ obj->prev = NULL;
67498+
67499+ curr = &role->subj_hash[index];
67500+ if (*curr != NULL)
67501+ (*curr)->prev = obj;
67502+
67503+ obj->next = *curr;
67504+ *curr = obj;
67505+
67506+ return;
67507+}
67508+
67509+/* derived from glibc fnmatch() 0: match, 1: no match*/
67510+
67511+static int
67512+glob_match(const char *p, const char *n)
67513+{
67514+ char c;
67515+
67516+ while ((c = *p++) != '\0') {
67517+ switch (c) {
67518+ case '?':
67519+ if (*n == '\0')
67520+ return 1;
67521+ else if (*n == '/')
67522+ return 1;
67523+ break;
67524+ case '\\':
67525+ if (*n != c)
67526+ return 1;
67527+ break;
67528+ case '*':
67529+ for (c = *p++; c == '?' || c == '*'; c = *p++) {
67530+ if (*n == '/')
67531+ return 1;
67532+ else if (c == '?') {
67533+ if (*n == '\0')
67534+ return 1;
67535+ else
67536+ ++n;
67537+ }
67538+ }
67539+ if (c == '\0') {
67540+ return 0;
67541+ } else {
67542+ const char *endp;
67543+
67544+ if ((endp = strchr(n, '/')) == NULL)
67545+ endp = n + strlen(n);
67546+
67547+ if (c == '[') {
67548+ for (--p; n < endp; ++n)
67549+ if (!glob_match(p, n))
67550+ return 0;
67551+ } else if (c == '/') {
67552+ while (*n != '\0' && *n != '/')
67553+ ++n;
67554+ if (*n == '/' && !glob_match(p, n + 1))
67555+ return 0;
67556+ } else {
67557+ for (--p; n < endp; ++n)
67558+ if (*n == c && !glob_match(p, n))
67559+ return 0;
67560+ }
67561+
67562+ return 1;
67563+ }
67564+ case '[':
67565+ {
67566+ int not;
67567+ char cold;
67568+
67569+ if (*n == '\0' || *n == '/')
67570+ return 1;
67571+
67572+ not = (*p == '!' || *p == '^');
67573+ if (not)
67574+ ++p;
67575+
67576+ c = *p++;
67577+ for (;;) {
67578+ unsigned char fn = (unsigned char)*n;
67579+
67580+ if (c == '\0')
67581+ return 1;
67582+ else {
67583+ if (c == fn)
67584+ goto matched;
67585+ cold = c;
67586+ c = *p++;
67587+
67588+ if (c == '-' && *p != ']') {
67589+ unsigned char cend = *p++;
67590+
67591+ if (cend == '\0')
67592+ return 1;
67593+
67594+ if (cold <= fn && fn <= cend)
67595+ goto matched;
67596+
67597+ c = *p++;
67598+ }
67599+ }
67600+
67601+ if (c == ']')
67602+ break;
67603+ }
67604+ if (!not)
67605+ return 1;
67606+ break;
67607+ matched:
67608+ while (c != ']') {
67609+ if (c == '\0')
67610+ return 1;
67611+
67612+ c = *p++;
67613+ }
67614+ if (not)
67615+ return 1;
67616+ }
67617+ break;
67618+ default:
67619+ if (c != *n)
67620+ return 1;
67621+ }
67622+
67623+ ++n;
67624+ }
67625+
67626+ if (*n == '\0')
67627+ return 0;
67628+
67629+ if (*n == '/')
67630+ return 0;
67631+
67632+ return 1;
67633+}
67634+
67635+static struct acl_object_label *
67636+chk_glob_label(struct acl_object_label *globbed,
67637+ const struct dentry *dentry, const struct vfsmount *mnt, char **path)
67638+{
67639+ struct acl_object_label *tmp;
67640+
67641+ if (*path == NULL)
67642+ *path = gr_to_filename_nolock(dentry, mnt);
67643+
67644+ tmp = globbed;
67645+
67646+ while (tmp) {
67647+ if (!glob_match(tmp->filename, *path))
67648+ return tmp;
67649+ tmp = tmp->next;
67650+ }
67651+
67652+ return NULL;
67653+}
67654+
67655+static struct acl_object_label *
67656+__full_lookup(const struct dentry *orig_dentry, const struct vfsmount *orig_mnt,
67657+ const ino_t curr_ino, const dev_t curr_dev,
67658+ const struct acl_subject_label *subj, char **path, const int checkglob)
67659+{
67660+ struct acl_subject_label *tmpsubj;
67661+ struct acl_object_label *retval;
67662+ struct acl_object_label *retval2;
67663+
67664+ tmpsubj = (struct acl_subject_label *) subj;
67665+ read_lock(&gr_inode_lock);
67666+ do {
67667+ retval = lookup_acl_obj_label(curr_ino, curr_dev, tmpsubj);
67668+ if (retval) {
67669+ if (checkglob && retval->globbed) {
67670+ retval2 = chk_glob_label(retval->globbed, orig_dentry, orig_mnt, path);
67671+ if (retval2)
67672+ retval = retval2;
67673+ }
67674+ break;
67675+ }
67676+ } while ((tmpsubj = tmpsubj->parent_subject));
67677+ read_unlock(&gr_inode_lock);
67678+
67679+ return retval;
67680+}
67681+
67682+static __inline__ struct acl_object_label *
67683+full_lookup(const struct dentry *orig_dentry, const struct vfsmount *orig_mnt,
67684+ struct dentry *curr_dentry,
67685+ const struct acl_subject_label *subj, char **path, const int checkglob)
67686+{
67687+ int newglob = checkglob;
67688+ ino_t inode;
67689+ dev_t device;
67690+
67691+ /* if we aren't checking a subdirectory of the original path yet, don't do glob checking
67692+ as we don't want a / * rule to match instead of the / object
67693+ don't do this for create lookups that call this function though, since they're looking up
67694+ on the parent and thus need globbing checks on all paths
67695+ */
67696+ if (orig_dentry == curr_dentry && newglob != GR_CREATE_GLOB)
67697+ newglob = GR_NO_GLOB;
67698+
67699+ spin_lock(&curr_dentry->d_lock);
67700+ inode = curr_dentry->d_inode->i_ino;
67701+ device = __get_dev(curr_dentry);
67702+ spin_unlock(&curr_dentry->d_lock);
67703+
67704+ return __full_lookup(orig_dentry, orig_mnt, inode, device, subj, path, newglob);
67705+}
67706+
67707+#ifdef CONFIG_HUGETLBFS
67708+static inline bool
67709+is_hugetlbfs_mnt(const struct vfsmount *mnt)
67710+{
67711+ int i;
67712+ for (i = 0; i < HUGE_MAX_HSTATE; i++) {
67713+ if (unlikely(hugetlbfs_vfsmount[i] == mnt))
67714+ return true;
67715+ }
67716+
67717+ return false;
67718+}
67719+#endif
67720+
67721+static struct acl_object_label *
67722+__chk_obj_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt,
67723+ const struct acl_subject_label *subj, char *path, const int checkglob)
67724+{
67725+ struct dentry *dentry = (struct dentry *) l_dentry;
67726+ struct vfsmount *mnt = (struct vfsmount *) l_mnt;
67727+ struct mount *real_mnt = real_mount(mnt);
67728+ struct acl_object_label *retval;
67729+ struct dentry *parent;
67730+
67731+ read_seqlock_excl(&mount_lock);
67732+ write_seqlock(&rename_lock);
67733+
67734+ if (unlikely((mnt == shm_mnt && dentry->d_inode->i_nlink == 0) || mnt == pipe_mnt ||
67735+#ifdef CONFIG_NET
67736+ mnt == sock_mnt ||
67737+#endif
67738+#ifdef CONFIG_HUGETLBFS
67739+ (is_hugetlbfs_mnt(mnt) && dentry->d_inode->i_nlink == 0) ||
67740+#endif
67741+ /* ignore Eric Biederman */
67742+ IS_PRIVATE(l_dentry->d_inode))) {
67743+ retval = (subj->mode & GR_SHMEXEC) ? fakefs_obj_rwx : fakefs_obj_rw;
67744+ goto out;
67745+ }
67746+
67747+ for (;;) {
67748+ if (dentry == gr_real_root.dentry && mnt == gr_real_root.mnt)
67749+ break;
67750+
67751+ if (dentry == mnt->mnt_root || IS_ROOT(dentry)) {
67752+ if (!mnt_has_parent(real_mnt))
67753+ break;
67754+
67755+ retval = full_lookup(l_dentry, l_mnt, dentry, subj, &path, checkglob);
67756+ if (retval != NULL)
67757+ goto out;
67758+
67759+ dentry = real_mnt->mnt_mountpoint;
67760+ real_mnt = real_mnt->mnt_parent;
67761+ mnt = &real_mnt->mnt;
67762+ continue;
67763+ }
67764+
67765+ parent = dentry->d_parent;
67766+ retval = full_lookup(l_dentry, l_mnt, dentry, subj, &path, checkglob);
67767+ if (retval != NULL)
67768+ goto out;
67769+
67770+ dentry = parent;
67771+ }
67772+
67773+ retval = full_lookup(l_dentry, l_mnt, dentry, subj, &path, checkglob);
67774+
67775+ /* gr_real_root is pinned so we don't have to hold a reference */
67776+ if (retval == NULL)
67777+ retval = full_lookup(l_dentry, l_mnt, gr_real_root.dentry, subj, &path, checkglob);
67778+out:
67779+ write_sequnlock(&rename_lock);
67780+ read_sequnlock_excl(&mount_lock);
67781+
67782+ BUG_ON(retval == NULL);
67783+
67784+ return retval;
67785+}
67786+
67787+static __inline__ struct acl_object_label *
67788+chk_obj_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt,
67789+ const struct acl_subject_label *subj)
67790+{
67791+ char *path = NULL;
67792+ return __chk_obj_label(l_dentry, l_mnt, subj, path, GR_REG_GLOB);
67793+}
67794+
67795+static __inline__ struct acl_object_label *
67796+chk_obj_label_noglob(const struct dentry *l_dentry, const struct vfsmount *l_mnt,
67797+ const struct acl_subject_label *subj)
67798+{
67799+ char *path = NULL;
67800+ return __chk_obj_label(l_dentry, l_mnt, subj, path, GR_NO_GLOB);
67801+}
67802+
67803+static __inline__ struct acl_object_label *
67804+chk_obj_create_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt,
67805+ const struct acl_subject_label *subj, char *path)
67806+{
67807+ return __chk_obj_label(l_dentry, l_mnt, subj, path, GR_CREATE_GLOB);
67808+}
67809+
67810+struct acl_subject_label *
67811+chk_subj_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt,
67812+ const struct acl_role_label *role)
67813+{
67814+ struct dentry *dentry = (struct dentry *) l_dentry;
67815+ struct vfsmount *mnt = (struct vfsmount *) l_mnt;
67816+ struct mount *real_mnt = real_mount(mnt);
67817+ struct acl_subject_label *retval;
67818+ struct dentry *parent;
67819+
67820+ read_seqlock_excl(&mount_lock);
67821+ write_seqlock(&rename_lock);
67822+
67823+ for (;;) {
67824+ if (dentry == gr_real_root.dentry && mnt == gr_real_root.mnt)
67825+ break;
67826+ if (dentry == mnt->mnt_root || IS_ROOT(dentry)) {
67827+ if (!mnt_has_parent(real_mnt))
67828+ break;
67829+
67830+ spin_lock(&dentry->d_lock);
67831+ read_lock(&gr_inode_lock);
67832+ retval =
67833+ lookup_acl_subj_label(dentry->d_inode->i_ino,
67834+ __get_dev(dentry), role);
67835+ read_unlock(&gr_inode_lock);
67836+ spin_unlock(&dentry->d_lock);
67837+ if (retval != NULL)
67838+ goto out;
67839+
67840+ dentry = real_mnt->mnt_mountpoint;
67841+ real_mnt = real_mnt->mnt_parent;
67842+ mnt = &real_mnt->mnt;
67843+ continue;
67844+ }
67845+
67846+ spin_lock(&dentry->d_lock);
67847+ read_lock(&gr_inode_lock);
67848+ retval = lookup_acl_subj_label(dentry->d_inode->i_ino,
67849+ __get_dev(dentry), role);
67850+ read_unlock(&gr_inode_lock);
67851+ parent = dentry->d_parent;
67852+ spin_unlock(&dentry->d_lock);
67853+
67854+ if (retval != NULL)
67855+ goto out;
67856+
67857+ dentry = parent;
67858+ }
67859+
67860+ spin_lock(&dentry->d_lock);
67861+ read_lock(&gr_inode_lock);
67862+ retval = lookup_acl_subj_label(dentry->d_inode->i_ino,
67863+ __get_dev(dentry), role);
67864+ read_unlock(&gr_inode_lock);
67865+ spin_unlock(&dentry->d_lock);
67866+
67867+ if (unlikely(retval == NULL)) {
67868+ /* gr_real_root is pinned, we don't need to hold a reference */
67869+ read_lock(&gr_inode_lock);
67870+ retval = lookup_acl_subj_label(gr_real_root.dentry->d_inode->i_ino,
67871+ __get_dev(gr_real_root.dentry), role);
67872+ read_unlock(&gr_inode_lock);
67873+ }
67874+out:
67875+ write_sequnlock(&rename_lock);
67876+ read_sequnlock_excl(&mount_lock);
67877+
67878+ BUG_ON(retval == NULL);
67879+
67880+ return retval;
67881+}
67882+
67883+void
67884+assign_special_role(const char *rolename)
67885+{
67886+ struct acl_object_label *obj;
67887+ struct acl_role_label *r;
67888+ struct acl_role_label *assigned = NULL;
67889+ struct task_struct *tsk;
67890+ struct file *filp;
67891+
67892+ FOR_EACH_ROLE_START(r)
67893+ if (!strcmp(rolename, r->rolename) &&
67894+ (r->roletype & GR_ROLE_SPECIAL)) {
67895+ assigned = r;
67896+ break;
67897+ }
67898+ FOR_EACH_ROLE_END(r)
67899+
67900+ if (!assigned)
67901+ return;
67902+
67903+ read_lock(&tasklist_lock);
67904+ read_lock(&grsec_exec_file_lock);
67905+
67906+ tsk = current->real_parent;
67907+ if (tsk == NULL)
67908+ goto out_unlock;
67909+
67910+ filp = tsk->exec_file;
67911+ if (filp == NULL)
67912+ goto out_unlock;
67913+
67914+ tsk->is_writable = 0;
67915+ tsk->inherited = 0;
67916+
67917+ tsk->acl_sp_role = 1;
67918+ tsk->acl_role_id = ++acl_sp_role_value;
67919+ tsk->role = assigned;
67920+ tsk->acl = chk_subj_label(filp->f_path.dentry, filp->f_path.mnt, tsk->role);
67921+
67922+ /* ignore additional mmap checks for processes that are writable
67923+ by the default ACL */
67924+ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, running_polstate.default_role->root_label);
67925+ if (unlikely(obj->mode & GR_WRITE))
67926+ tsk->is_writable = 1;
67927+ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, tsk->role->root_label);
67928+ if (unlikely(obj->mode & GR_WRITE))
67929+ tsk->is_writable = 1;
67930+
67931+#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG
67932+ printk(KERN_ALERT "Assigning special role:%s subject:%s to process (%s:%d)\n", tsk->role->rolename,
67933+ tsk->acl->filename, tsk->comm, task_pid_nr(tsk));
67934+#endif
67935+
67936+out_unlock:
67937+ read_unlock(&grsec_exec_file_lock);
67938+ read_unlock(&tasklist_lock);
67939+ return;
67940+}
67941+
67942+
67943+static void
67944+gr_log_learn(const struct dentry *dentry, const struct vfsmount *mnt, const __u32 mode)
67945+{
67946+ struct task_struct *task = current;
67947+ const struct cred *cred = current_cred();
67948+
67949+ security_learn(GR_LEARN_AUDIT_MSG, task->role->rolename, task->role->roletype,
67950+ GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid), task->exec_file ? gr_to_filename1(task->exec_file->f_path.dentry,
67951+ task->exec_file->f_path.mnt) : task->acl->filename, task->acl->filename,
67952+ 1UL, 1UL, gr_to_filename(dentry, mnt), (unsigned long) mode, &task->signal->saved_ip);
67953+
67954+ return;
67955+}
67956+
67957+static void
67958+gr_log_learn_uid_change(const kuid_t real, const kuid_t effective, const kuid_t fs)
67959+{
67960+ struct task_struct *task = current;
67961+ const struct cred *cred = current_cred();
67962+
67963+ security_learn(GR_ID_LEARN_MSG, task->role->rolename, task->role->roletype,
67964+ GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid), task->exec_file ? gr_to_filename1(task->exec_file->f_path.dentry,
67965+ task->exec_file->f_path.mnt) : task->acl->filename, task->acl->filename,
67966+ 'u', GR_GLOBAL_UID(real), GR_GLOBAL_UID(effective), GR_GLOBAL_UID(fs), &task->signal->saved_ip);
67967+
67968+ return;
67969+}
67970+
67971+static void
67972+gr_log_learn_gid_change(const kgid_t real, const kgid_t effective, const kgid_t fs)
67973+{
67974+ struct task_struct *task = current;
67975+ const struct cred *cred = current_cred();
67976+
67977+ security_learn(GR_ID_LEARN_MSG, task->role->rolename, task->role->roletype,
67978+ GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid), task->exec_file ? gr_to_filename1(task->exec_file->f_path.dentry,
67979+ task->exec_file->f_path.mnt) : task->acl->filename, task->acl->filename,
67980+ 'g', GR_GLOBAL_GID(real), GR_GLOBAL_GID(effective), GR_GLOBAL_GID(fs), &task->signal->saved_ip);
67981+
67982+ return;
67983+}
67984+
67985+static void
67986+gr_set_proc_res(struct task_struct *task)
67987+{
67988+ struct acl_subject_label *proc;
67989+ unsigned short i;
67990+
67991+ proc = task->acl;
67992+
67993+ if (proc->mode & (GR_LEARN | GR_INHERITLEARN))
67994+ return;
67995+
67996+ for (i = 0; i < RLIM_NLIMITS; i++) {
67997+ if (!(proc->resmask & (1U << i)))
67998+ continue;
67999+
68000+ task->signal->rlim[i].rlim_cur = proc->res[i].rlim_cur;
68001+ task->signal->rlim[i].rlim_max = proc->res[i].rlim_max;
68002+
68003+ if (i == RLIMIT_CPU)
68004+ update_rlimit_cpu(task, proc->res[i].rlim_cur);
68005+ }
68006+
68007+ return;
68008+}
68009+
68010+/* both of the below must be called with
68011+ rcu_read_lock();
68012+ read_lock(&tasklist_lock);
68013+ read_lock(&grsec_exec_file_lock);
68014+*/
68015+
68016+struct acl_subject_label *__gr_get_subject_for_task(const struct gr_policy_state *state, struct task_struct *task, const char *filename)
68017+{
68018+ char *tmpname;
68019+ struct acl_subject_label *tmpsubj;
68020+ struct file *filp;
68021+ struct name_entry *nmatch;
68022+
68023+ filp = task->exec_file;
68024+ if (filp == NULL)
68025+ return NULL;
68026+
68027+ /* the following is to apply the correct subject
68028+ on binaries running when the RBAC system
68029+ is enabled, when the binaries have been
68030+ replaced or deleted since their execution
68031+ -----
68032+ when the RBAC system starts, the inode/dev
68033+ from exec_file will be one the RBAC system
68034+ is unaware of. It only knows the inode/dev
68035+ of the present file on disk, or the absence
68036+ of it.
68037+ */
68038+
68039+ if (filename)
68040+ nmatch = __lookup_name_entry(state, filename);
68041+ else {
68042+ preempt_disable();
68043+ tmpname = gr_to_filename_rbac(filp->f_path.dentry, filp->f_path.mnt);
68044+
68045+ nmatch = __lookup_name_entry(state, tmpname);
68046+ preempt_enable();
68047+ }
68048+ tmpsubj = NULL;
68049+ if (nmatch) {
68050+ if (nmatch->deleted)
68051+ tmpsubj = lookup_acl_subj_label_deleted(nmatch->inode, nmatch->device, task->role);
68052+ else
68053+ tmpsubj = lookup_acl_subj_label(nmatch->inode, nmatch->device, task->role);
68054+ }
68055+ /* this also works for the reload case -- if we don't match a potentially inherited subject
68056+ then we fall back to a normal lookup based on the binary's ino/dev
68057+ */
68058+ if (tmpsubj == NULL)
68059+ tmpsubj = chk_subj_label(filp->f_path.dentry, filp->f_path.mnt, task->role);
68060+
68061+ return tmpsubj;
68062+}
68063+
68064+static struct acl_subject_label *gr_get_subject_for_task(struct task_struct *task, const char *filename)
68065+{
68066+ return __gr_get_subject_for_task(&running_polstate, task, filename);
68067+}
68068+
68069+void __gr_apply_subject_to_task(const struct gr_policy_state *state, struct task_struct *task, struct acl_subject_label *subj)
68070+{
68071+ struct acl_object_label *obj;
68072+ struct file *filp;
68073+
68074+ filp = task->exec_file;
68075+
68076+ task->acl = subj;
68077+ task->is_writable = 0;
68078+ /* ignore additional mmap checks for processes that are writable
68079+ by the default ACL */
68080+ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, state->default_role->root_label);
68081+ if (unlikely(obj->mode & GR_WRITE))
68082+ task->is_writable = 1;
68083+ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, task->role->root_label);
68084+ if (unlikely(obj->mode & GR_WRITE))
68085+ task->is_writable = 1;
68086+
68087+ gr_set_proc_res(task);
68088+
68089+#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG
68090+ printk(KERN_ALERT "gr_set_acls for (%s:%d): role:%s, subject:%s\n", task->comm, task_pid_nr(task), task->role->rolename, task->acl->filename);
68091+#endif
68092+}
68093+
68094+static void gr_apply_subject_to_task(struct task_struct *task, struct acl_subject_label *subj)
68095+{
68096+ __gr_apply_subject_to_task(&running_polstate, task, subj);
68097+}
68098+
68099+__u32
68100+gr_search_file(const struct dentry * dentry, const __u32 mode,
68101+ const struct vfsmount * mnt)
68102+{
68103+ __u32 retval = mode;
68104+ struct acl_subject_label *curracl;
68105+ struct acl_object_label *currobj;
68106+
68107+ if (unlikely(!(gr_status & GR_READY)))
68108+ return (mode & ~GR_AUDITS);
68109+
68110+ curracl = current->acl;
68111+
68112+ currobj = chk_obj_label(dentry, mnt, curracl);
68113+ retval = currobj->mode & mode;
68114+
68115+ /* if we're opening a specified transfer file for writing
68116+ (e.g. /dev/initctl), then transfer our role to init
68117+ */
68118+ if (unlikely(currobj->mode & GR_INIT_TRANSFER && retval & GR_WRITE &&
68119+ current->role->roletype & GR_ROLE_PERSIST)) {
68120+ struct task_struct *task = init_pid_ns.child_reaper;
68121+
68122+ if (task->role != current->role) {
68123+ struct acl_subject_label *subj;
68124+
68125+ task->acl_sp_role = 0;
68126+ task->acl_role_id = current->acl_role_id;
68127+ task->role = current->role;
68128+ rcu_read_lock();
68129+ read_lock(&grsec_exec_file_lock);
68130+ subj = gr_get_subject_for_task(task, NULL);
68131+ gr_apply_subject_to_task(task, subj);
68132+ read_unlock(&grsec_exec_file_lock);
68133+ rcu_read_unlock();
68134+ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_INIT_TRANSFER_MSG);
68135+ }
68136+ }
68137+
68138+ if (unlikely
68139+ ((curracl->mode & (GR_LEARN | GR_INHERITLEARN)) && !(mode & GR_NOPTRACE)
68140+ && (retval != (mode & ~(GR_AUDITS | GR_SUPPRESS))))) {
68141+ __u32 new_mode = mode;
68142+
68143+ new_mode &= ~(GR_AUDITS | GR_SUPPRESS);
68144+
68145+ retval = new_mode;
68146+
68147+ if (new_mode & GR_EXEC && curracl->mode & GR_INHERITLEARN)
68148+ new_mode |= GR_INHERIT;
68149+
68150+ if (!(mode & GR_NOLEARN))
68151+ gr_log_learn(dentry, mnt, new_mode);
68152+ }
68153+
68154+ return retval;
68155+}
68156+
68157+struct acl_object_label *gr_get_create_object(const struct dentry *new_dentry,
68158+ const struct dentry *parent,
68159+ const struct vfsmount *mnt)
68160+{
68161+ struct name_entry *match;
68162+ struct acl_object_label *matchpo;
68163+ struct acl_subject_label *curracl;
68164+ char *path;
68165+
68166+ if (unlikely(!(gr_status & GR_READY)))
68167+ return NULL;
68168+
68169+ preempt_disable();
68170+ path = gr_to_filename_rbac(new_dentry, mnt);
68171+ match = lookup_name_entry_create(path);
68172+
68173+ curracl = current->acl;
68174+
68175+ if (match) {
68176+ read_lock(&gr_inode_lock);
68177+ matchpo = lookup_acl_obj_label_create(match->inode, match->device, curracl);
68178+ read_unlock(&gr_inode_lock);
68179+
68180+ if (matchpo) {
68181+ preempt_enable();
68182+ return matchpo;
68183+ }
68184+ }
68185+
68186+ // lookup parent
68187+
68188+ matchpo = chk_obj_create_label(parent, mnt, curracl, path);
68189+
68190+ preempt_enable();
68191+ return matchpo;
68192+}
68193+
68194+__u32
68195+gr_check_create(const struct dentry * new_dentry, const struct dentry * parent,
68196+ const struct vfsmount * mnt, const __u32 mode)
68197+{
68198+ struct acl_object_label *matchpo;
68199+ __u32 retval;
68200+
68201+ if (unlikely(!(gr_status & GR_READY)))
68202+ return (mode & ~GR_AUDITS);
68203+
68204+ matchpo = gr_get_create_object(new_dentry, parent, mnt);
68205+
68206+ retval = matchpo->mode & mode;
68207+
68208+ if ((retval != (mode & ~(GR_AUDITS | GR_SUPPRESS)))
68209+ && (current->acl->mode & (GR_LEARN | GR_INHERITLEARN))) {
68210+ __u32 new_mode = mode;
68211+
68212+ new_mode &= ~(GR_AUDITS | GR_SUPPRESS);
68213+
68214+ gr_log_learn(new_dentry, mnt, new_mode);
68215+ return new_mode;
68216+ }
68217+
68218+ return retval;
68219+}
68220+
68221+__u32
68222+gr_check_link(const struct dentry * new_dentry,
68223+ const struct dentry * parent_dentry,
68224+ const struct vfsmount * parent_mnt,
68225+ const struct dentry * old_dentry, const struct vfsmount * old_mnt)
68226+{
68227+ struct acl_object_label *obj;
68228+ __u32 oldmode, newmode;
68229+ __u32 needmode;
68230+ __u32 checkmodes = GR_FIND | GR_APPEND | GR_WRITE | GR_EXEC | GR_SETID | GR_READ |
68231+ GR_DELETE | GR_INHERIT;
68232+
68233+ if (unlikely(!(gr_status & GR_READY)))
68234+ return (GR_CREATE | GR_LINK);
68235+
68236+ obj = chk_obj_label(old_dentry, old_mnt, current->acl);
68237+ oldmode = obj->mode;
68238+
68239+ obj = gr_get_create_object(new_dentry, parent_dentry, parent_mnt);
68240+ newmode = obj->mode;
68241+
68242+ needmode = newmode & checkmodes;
68243+
68244+ // old name for hardlink must have at least the permissions of the new name
68245+ if ((oldmode & needmode) != needmode)
68246+ goto bad;
68247+
68248+ // if old name had restrictions/auditing, make sure the new name does as well
68249+ needmode = oldmode & (GR_NOPTRACE | GR_PTRACERD | GR_INHERIT | GR_AUDITS);
68250+
68251+ // don't allow hardlinking of suid/sgid/fcapped files without permission
68252+ if (is_privileged_binary(old_dentry))
68253+ needmode |= GR_SETID;
68254+
68255+ if ((newmode & needmode) != needmode)
68256+ goto bad;
68257+
68258+ // enforce minimum permissions
68259+ if ((newmode & (GR_CREATE | GR_LINK)) == (GR_CREATE | GR_LINK))
68260+ return newmode;
68261+bad:
68262+ needmode = oldmode;
68263+ if (is_privileged_binary(old_dentry))
68264+ needmode |= GR_SETID;
68265+
68266+ if (current->acl->mode & (GR_LEARN | GR_INHERITLEARN)) {
68267+ gr_log_learn(old_dentry, old_mnt, needmode | GR_CREATE | GR_LINK);
68268+ return (GR_CREATE | GR_LINK);
68269+ } else if (newmode & GR_SUPPRESS)
68270+ return GR_SUPPRESS;
68271+ else
68272+ return 0;
68273+}
68274+
68275+int
68276+gr_check_hidden_task(const struct task_struct *task)
68277+{
68278+ if (unlikely(!(gr_status & GR_READY)))
68279+ return 0;
68280+
68281+ if (!(task->acl->mode & GR_PROCFIND) && !(current->acl->mode & GR_VIEW))
68282+ return 1;
68283+
68284+ return 0;
68285+}
68286+
68287+int
68288+gr_check_protected_task(const struct task_struct *task)
68289+{
68290+ if (unlikely(!(gr_status & GR_READY) || !task))
68291+ return 0;
68292+
68293+ if ((task->acl->mode & GR_PROTECTED) && !(current->acl->mode & GR_KILL) &&
68294+ task->acl != current->acl)
68295+ return 1;
68296+
68297+ return 0;
68298+}
68299+
68300+int
68301+gr_check_protected_task_fowner(struct pid *pid, enum pid_type type)
68302+{
68303+ struct task_struct *p;
68304+ int ret = 0;
68305+
68306+ if (unlikely(!(gr_status & GR_READY) || !pid))
68307+ return ret;
68308+
68309+ read_lock(&tasklist_lock);
68310+ do_each_pid_task(pid, type, p) {
68311+ if ((p->acl->mode & GR_PROTECTED) && !(current->acl->mode & GR_KILL) &&
68312+ p->acl != current->acl) {
68313+ ret = 1;
68314+ goto out;
68315+ }
68316+ } while_each_pid_task(pid, type, p);
68317+out:
68318+ read_unlock(&tasklist_lock);
68319+
68320+ return ret;
68321+}
68322+
68323+void
68324+gr_copy_label(struct task_struct *tsk)
68325+{
68326+ struct task_struct *p = current;
68327+
68328+ tsk->inherited = p->inherited;
68329+ tsk->acl_sp_role = 0;
68330+ tsk->acl_role_id = p->acl_role_id;
68331+ tsk->acl = p->acl;
68332+ tsk->role = p->role;
68333+ tsk->signal->used_accept = 0;
68334+ tsk->signal->curr_ip = p->signal->curr_ip;
68335+ tsk->signal->saved_ip = p->signal->saved_ip;
68336+ if (p->exec_file)
68337+ get_file(p->exec_file);
68338+ tsk->exec_file = p->exec_file;
68339+ tsk->is_writable = p->is_writable;
68340+ if (unlikely(p->signal->used_accept)) {
68341+ p->signal->curr_ip = 0;
68342+ p->signal->saved_ip = 0;
68343+ }
68344+
68345+ return;
68346+}
68347+
68348+extern int gr_process_kernel_setuid_ban(struct user_struct *user);
68349+
68350+int
68351+gr_check_user_change(kuid_t real, kuid_t effective, kuid_t fs)
68352+{
68353+ unsigned int i;
68354+ __u16 num;
68355+ uid_t *uidlist;
68356+ uid_t curuid;
68357+ int realok = 0;
68358+ int effectiveok = 0;
68359+ int fsok = 0;
68360+ uid_t globalreal, globaleffective, globalfs;
68361+
68362+#if defined(CONFIG_GRKERNSEC_KERN_LOCKOUT)
68363+ struct user_struct *user;
68364+
68365+ if (!uid_valid(real))
68366+ goto skipit;
68367+
68368+ /* find user based on global namespace */
68369+
68370+ globalreal = GR_GLOBAL_UID(real);
68371+
68372+ user = find_user(make_kuid(&init_user_ns, globalreal));
68373+ if (user == NULL)
68374+ goto skipit;
68375+
68376+ if (gr_process_kernel_setuid_ban(user)) {
68377+ /* for find_user */
68378+ free_uid(user);
68379+ return 1;
68380+ }
68381+
68382+ /* for find_user */
68383+ free_uid(user);
68384+
68385+skipit:
68386+#endif
68387+
68388+ if (unlikely(!(gr_status & GR_READY)))
68389+ return 0;
68390+
68391+ if (current->acl->mode & (GR_LEARN | GR_INHERITLEARN))
68392+ gr_log_learn_uid_change(real, effective, fs);
68393+
68394+ num = current->acl->user_trans_num;
68395+ uidlist = current->acl->user_transitions;
68396+
68397+ if (uidlist == NULL)
68398+ return 0;
68399+
68400+ if (!uid_valid(real)) {
68401+ realok = 1;
68402+ globalreal = (uid_t)-1;
68403+ } else {
68404+ globalreal = GR_GLOBAL_UID(real);
68405+ }
68406+ if (!uid_valid(effective)) {
68407+ effectiveok = 1;
68408+ globaleffective = (uid_t)-1;
68409+ } else {
68410+ globaleffective = GR_GLOBAL_UID(effective);
68411+ }
68412+ if (!uid_valid(fs)) {
68413+ fsok = 1;
68414+ globalfs = (uid_t)-1;
68415+ } else {
68416+ globalfs = GR_GLOBAL_UID(fs);
68417+ }
68418+
68419+ if (current->acl->user_trans_type & GR_ID_ALLOW) {
68420+ for (i = 0; i < num; i++) {
68421+ curuid = uidlist[i];
68422+ if (globalreal == curuid)
68423+ realok = 1;
68424+ if (globaleffective == curuid)
68425+ effectiveok = 1;
68426+ if (globalfs == curuid)
68427+ fsok = 1;
68428+ }
68429+ } else if (current->acl->user_trans_type & GR_ID_DENY) {
68430+ for (i = 0; i < num; i++) {
68431+ curuid = uidlist[i];
68432+ if (globalreal == curuid)
68433+ break;
68434+ if (globaleffective == curuid)
68435+ break;
68436+ if (globalfs == curuid)
68437+ break;
68438+ }
68439+ /* not in deny list */
68440+ if (i == num) {
68441+ realok = 1;
68442+ effectiveok = 1;
68443+ fsok = 1;
68444+ }
68445+ }
68446+
68447+ if (realok && effectiveok && fsok)
68448+ return 0;
68449+ else {
68450+ gr_log_int(GR_DONT_AUDIT, GR_USRCHANGE_ACL_MSG, realok ? (effectiveok ? (fsok ? 0 : globalfs) : globaleffective) : globalreal);
68451+ return 1;
68452+ }
68453+}
68454+
68455+int
68456+gr_check_group_change(kgid_t real, kgid_t effective, kgid_t fs)
68457+{
68458+ unsigned int i;
68459+ __u16 num;
68460+ gid_t *gidlist;
68461+ gid_t curgid;
68462+ int realok = 0;
68463+ int effectiveok = 0;
68464+ int fsok = 0;
68465+ gid_t globalreal, globaleffective, globalfs;
68466+
68467+ if (unlikely(!(gr_status & GR_READY)))
68468+ return 0;
68469+
68470+ if (current->acl->mode & (GR_LEARN | GR_INHERITLEARN))
68471+ gr_log_learn_gid_change(real, effective, fs);
68472+
68473+ num = current->acl->group_trans_num;
68474+ gidlist = current->acl->group_transitions;
68475+
68476+ if (gidlist == NULL)
68477+ return 0;
68478+
68479+ if (!gid_valid(real)) {
68480+ realok = 1;
68481+ globalreal = (gid_t)-1;
68482+ } else {
68483+ globalreal = GR_GLOBAL_GID(real);
68484+ }
68485+ if (!gid_valid(effective)) {
68486+ effectiveok = 1;
68487+ globaleffective = (gid_t)-1;
68488+ } else {
68489+ globaleffective = GR_GLOBAL_GID(effective);
68490+ }
68491+ if (!gid_valid(fs)) {
68492+ fsok = 1;
68493+ globalfs = (gid_t)-1;
68494+ } else {
68495+ globalfs = GR_GLOBAL_GID(fs);
68496+ }
68497+
68498+ if (current->acl->group_trans_type & GR_ID_ALLOW) {
68499+ for (i = 0; i < num; i++) {
68500+ curgid = gidlist[i];
68501+ if (globalreal == curgid)
68502+ realok = 1;
68503+ if (globaleffective == curgid)
68504+ effectiveok = 1;
68505+ if (globalfs == curgid)
68506+ fsok = 1;
68507+ }
68508+ } else if (current->acl->group_trans_type & GR_ID_DENY) {
68509+ for (i = 0; i < num; i++) {
68510+ curgid = gidlist[i];
68511+ if (globalreal == curgid)
68512+ break;
68513+ if (globaleffective == curgid)
68514+ break;
68515+ if (globalfs == curgid)
68516+ break;
68517+ }
68518+ /* not in deny list */
68519+ if (i == num) {
68520+ realok = 1;
68521+ effectiveok = 1;
68522+ fsok = 1;
68523+ }
68524+ }
68525+
68526+ if (realok && effectiveok && fsok)
68527+ return 0;
68528+ else {
68529+ gr_log_int(GR_DONT_AUDIT, GR_GRPCHANGE_ACL_MSG, realok ? (effectiveok ? (fsok ? 0 : globalfs) : globaleffective) : globalreal);
68530+ return 1;
68531+ }
68532+}
68533+
68534+extern int gr_acl_is_capable(const int cap);
68535+
68536+void
68537+gr_set_role_label(struct task_struct *task, const kuid_t kuid, const kgid_t kgid)
68538+{
68539+ struct acl_role_label *role = task->role;
68540+ struct acl_subject_label *subj = NULL;
68541+ struct acl_object_label *obj;
68542+ struct file *filp;
68543+ uid_t uid;
68544+ gid_t gid;
68545+
68546+ if (unlikely(!(gr_status & GR_READY)))
68547+ return;
68548+
68549+ uid = GR_GLOBAL_UID(kuid);
68550+ gid = GR_GLOBAL_GID(kgid);
68551+
68552+ filp = task->exec_file;
68553+
68554+ /* kernel process, we'll give them the kernel role */
68555+ if (unlikely(!filp)) {
68556+ task->role = running_polstate.kernel_role;
68557+ task->acl = running_polstate.kernel_role->root_label;
68558+ return;
68559+ } else if (!task->role || !(task->role->roletype & GR_ROLE_SPECIAL)) {
68560+ /* save the current ip at time of role lookup so that the proper
68561+ IP will be learned for role_allowed_ip */
68562+ task->signal->saved_ip = task->signal->curr_ip;
68563+ role = lookup_acl_role_label(task, uid, gid);
68564+ }
68565+
68566+ /* don't change the role if we're not a privileged process */
68567+ if (role && task->role != role &&
68568+ (((role->roletype & GR_ROLE_USER) && !gr_acl_is_capable(CAP_SETUID)) ||
68569+ ((role->roletype & GR_ROLE_GROUP) && !gr_acl_is_capable(CAP_SETGID))))
68570+ return;
68571+
68572+ /* perform subject lookup in possibly new role
68573+ we can use this result below in the case where role == task->role
68574+ */
68575+ subj = chk_subj_label(filp->f_path.dentry, filp->f_path.mnt, role);
68576+
68577+ /* if we changed uid/gid, but result in the same role
68578+ and are using inheritance, don't lose the inherited subject
68579+ if current subject is other than what normal lookup
68580+ would result in, we arrived via inheritance, don't
68581+ lose subject
68582+ */
68583+ if (role != task->role || (!(task->acl->mode & GR_INHERITLEARN) &&
68584+ (subj == task->acl)))
68585+ task->acl = subj;
68586+
68587+ /* leave task->inherited unaffected */
68588+
68589+ task->role = role;
68590+
68591+ task->is_writable = 0;
68592+
68593+ /* ignore additional mmap checks for processes that are writable
68594+ by the default ACL */
68595+ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, running_polstate.default_role->root_label);
68596+ if (unlikely(obj->mode & GR_WRITE))
68597+ task->is_writable = 1;
68598+ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, task->role->root_label);
68599+ if (unlikely(obj->mode & GR_WRITE))
68600+ task->is_writable = 1;
68601+
68602+#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG
68603+ printk(KERN_ALERT "Set role label for (%s:%d): role:%s, subject:%s\n", task->comm, task_pid_nr(task), task->role->rolename, task->acl->filename);
68604+#endif
68605+
68606+ gr_set_proc_res(task);
68607+
68608+ return;
68609+}
68610+
68611+int
68612+gr_set_proc_label(const struct dentry *dentry, const struct vfsmount *mnt,
68613+ const int unsafe_flags)
68614+{
68615+ struct task_struct *task = current;
68616+ struct acl_subject_label *newacl;
68617+ struct acl_object_label *obj;
68618+ __u32 retmode;
68619+
68620+ if (unlikely(!(gr_status & GR_READY)))
68621+ return 0;
68622+
68623+ newacl = chk_subj_label(dentry, mnt, task->role);
68624+
68625+ /* special handling for if we did an strace -f -p <pid> from an admin role, where pid then
68626+ did an exec
68627+ */
68628+ rcu_read_lock();
68629+ read_lock(&tasklist_lock);
68630+ if (task->ptrace && task->parent && ((task->parent->role->roletype & GR_ROLE_GOD) ||
68631+ (task->parent->acl->mode & GR_POVERRIDE))) {
68632+ read_unlock(&tasklist_lock);
68633+ rcu_read_unlock();
68634+ goto skip_check;
68635+ }
68636+ read_unlock(&tasklist_lock);
68637+ rcu_read_unlock();
68638+
68639+ if (unsafe_flags && !(task->acl->mode & GR_POVERRIDE) && (task->acl != newacl) &&
68640+ !(task->role->roletype & GR_ROLE_GOD) &&
68641+ !gr_search_file(dentry, GR_PTRACERD, mnt) &&
68642+ !(task->acl->mode & (GR_LEARN | GR_INHERITLEARN))) {
68643+ if (unsafe_flags & LSM_UNSAFE_SHARE)
68644+ gr_log_fs_generic(GR_DONT_AUDIT, GR_UNSAFESHARE_EXEC_ACL_MSG, dentry, mnt);
68645+ else
68646+ gr_log_fs_generic(GR_DONT_AUDIT, GR_PTRACE_EXEC_ACL_MSG, dentry, mnt);
68647+ return -EACCES;
68648+ }
68649+
68650+skip_check:
68651+
68652+ obj = chk_obj_label(dentry, mnt, task->acl);
68653+ retmode = obj->mode & (GR_INHERIT | GR_AUDIT_INHERIT);
68654+
68655+ if (!(task->acl->mode & GR_INHERITLEARN) &&
68656+ ((newacl->mode & GR_LEARN) || !(retmode & GR_INHERIT))) {
68657+ if (obj->nested)
68658+ task->acl = obj->nested;
68659+ else
68660+ task->acl = newacl;
68661+ task->inherited = 0;
68662+ } else {
68663+ task->inherited = 1;
68664+ if (retmode & GR_INHERIT && retmode & GR_AUDIT_INHERIT)
68665+ gr_log_str_fs(GR_DO_AUDIT, GR_INHERIT_ACL_MSG, task->acl->filename, dentry, mnt);
68666+ }
68667+
68668+ task->is_writable = 0;
68669+
68670+ /* ignore additional mmap checks for processes that are writable
68671+ by the default ACL */
68672+ obj = chk_obj_label(dentry, mnt, running_polstate.default_role->root_label);
68673+ if (unlikely(obj->mode & GR_WRITE))
68674+ task->is_writable = 1;
68675+ obj = chk_obj_label(dentry, mnt, task->role->root_label);
68676+ if (unlikely(obj->mode & GR_WRITE))
68677+ task->is_writable = 1;
68678+
68679+ gr_set_proc_res(task);
68680+
68681+#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG
68682+ printk(KERN_ALERT "Set subject label for (%s:%d): role:%s, subject:%s\n", task->comm, task_pid_nr(task), task->role->rolename, task->acl->filename);
68683+#endif
68684+ return 0;
68685+}
68686+
68687+/* always called with valid inodev ptr */
68688+static void
68689+do_handle_delete(struct inodev_entry *inodev, const ino_t ino, const dev_t dev)
68690+{
68691+ struct acl_object_label *matchpo;
68692+ struct acl_subject_label *matchps;
68693+ struct acl_subject_label *subj;
68694+ struct acl_role_label *role;
68695+ unsigned int x;
68696+
68697+ FOR_EACH_ROLE_START(role)
68698+ FOR_EACH_SUBJECT_START(role, subj, x)
68699+ if ((matchpo = lookup_acl_obj_label(ino, dev, subj)) != NULL)
68700+ matchpo->mode |= GR_DELETED;
68701+ FOR_EACH_SUBJECT_END(subj,x)
68702+ FOR_EACH_NESTED_SUBJECT_START(role, subj)
68703+ /* nested subjects aren't in the role's subj_hash table */
68704+ if ((matchpo = lookup_acl_obj_label(ino, dev, subj)) != NULL)
68705+ matchpo->mode |= GR_DELETED;
68706+ FOR_EACH_NESTED_SUBJECT_END(subj)
68707+ if ((matchps = lookup_acl_subj_label(ino, dev, role)) != NULL)
68708+ matchps->mode |= GR_DELETED;
68709+ FOR_EACH_ROLE_END(role)
68710+
68711+ inodev->nentry->deleted = 1;
68712+
68713+ return;
68714+}
68715+
68716+void
68717+gr_handle_delete(const ino_t ino, const dev_t dev)
68718+{
68719+ struct inodev_entry *inodev;
68720+
68721+ if (unlikely(!(gr_status & GR_READY)))
68722+ return;
68723+
68724+ write_lock(&gr_inode_lock);
68725+ inodev = lookup_inodev_entry(ino, dev);
68726+ if (inodev != NULL)
68727+ do_handle_delete(inodev, ino, dev);
68728+ write_unlock(&gr_inode_lock);
68729+
68730+ return;
68731+}
68732+
68733+static void
68734+update_acl_obj_label(const ino_t oldinode, const dev_t olddevice,
68735+ const ino_t newinode, const dev_t newdevice,
68736+ struct acl_subject_label *subj)
68737+{
68738+ unsigned int index = gr_fhash(oldinode, olddevice, subj->obj_hash_size);
68739+ struct acl_object_label *match;
68740+
68741+ match = subj->obj_hash[index];
68742+
68743+ while (match && (match->inode != oldinode ||
68744+ match->device != olddevice ||
68745+ !(match->mode & GR_DELETED)))
68746+ match = match->next;
68747+
68748+ if (match && (match->inode == oldinode)
68749+ && (match->device == olddevice)
68750+ && (match->mode & GR_DELETED)) {
68751+ if (match->prev == NULL) {
68752+ subj->obj_hash[index] = match->next;
68753+ if (match->next != NULL)
68754+ match->next->prev = NULL;
68755+ } else {
68756+ match->prev->next = match->next;
68757+ if (match->next != NULL)
68758+ match->next->prev = match->prev;
68759+ }
68760+ match->prev = NULL;
68761+ match->next = NULL;
68762+ match->inode = newinode;
68763+ match->device = newdevice;
68764+ match->mode &= ~GR_DELETED;
68765+
68766+ insert_acl_obj_label(match, subj);
68767+ }
68768+
68769+ return;
68770+}
68771+
68772+static void
68773+update_acl_subj_label(const ino_t oldinode, const dev_t olddevice,
68774+ const ino_t newinode, const dev_t newdevice,
68775+ struct acl_role_label *role)
68776+{
68777+ unsigned int index = gr_fhash(oldinode, olddevice, role->subj_hash_size);
68778+ struct acl_subject_label *match;
68779+
68780+ match = role->subj_hash[index];
68781+
68782+ while (match && (match->inode != oldinode ||
68783+ match->device != olddevice ||
68784+ !(match->mode & GR_DELETED)))
68785+ match = match->next;
68786+
68787+ if (match && (match->inode == oldinode)
68788+ && (match->device == olddevice)
68789+ && (match->mode & GR_DELETED)) {
68790+ if (match->prev == NULL) {
68791+ role->subj_hash[index] = match->next;
68792+ if (match->next != NULL)
68793+ match->next->prev = NULL;
68794+ } else {
68795+ match->prev->next = match->next;
68796+ if (match->next != NULL)
68797+ match->next->prev = match->prev;
68798+ }
68799+ match->prev = NULL;
68800+ match->next = NULL;
68801+ match->inode = newinode;
68802+ match->device = newdevice;
68803+ match->mode &= ~GR_DELETED;
68804+
68805+ insert_acl_subj_label(match, role);
68806+ }
68807+
68808+ return;
68809+}
68810+
68811+static void
68812+update_inodev_entry(const ino_t oldinode, const dev_t olddevice,
68813+ const ino_t newinode, const dev_t newdevice)
68814+{
68815+ unsigned int index = gr_fhash(oldinode, olddevice, running_polstate.inodev_set.i_size);
68816+ struct inodev_entry *match;
68817+
68818+ match = running_polstate.inodev_set.i_hash[index];
68819+
68820+ while (match && (match->nentry->inode != oldinode ||
68821+ match->nentry->device != olddevice || !match->nentry->deleted))
68822+ match = match->next;
68823+
68824+ if (match && (match->nentry->inode == oldinode)
68825+ && (match->nentry->device == olddevice) &&
68826+ match->nentry->deleted) {
68827+ if (match->prev == NULL) {
68828+ running_polstate.inodev_set.i_hash[index] = match->next;
68829+ if (match->next != NULL)
68830+ match->next->prev = NULL;
68831+ } else {
68832+ match->prev->next = match->next;
68833+ if (match->next != NULL)
68834+ match->next->prev = match->prev;
68835+ }
68836+ match->prev = NULL;
68837+ match->next = NULL;
68838+ match->nentry->inode = newinode;
68839+ match->nentry->device = newdevice;
68840+ match->nentry->deleted = 0;
68841+
68842+ insert_inodev_entry(match);
68843+ }
68844+
68845+ return;
68846+}
68847+
68848+static void
68849+__do_handle_create(const struct name_entry *matchn, ino_t ino, dev_t dev)
68850+{
68851+ struct acl_subject_label *subj;
68852+ struct acl_role_label *role;
68853+ unsigned int x;
68854+
68855+ FOR_EACH_ROLE_START(role)
68856+ update_acl_subj_label(matchn->inode, matchn->device, ino, dev, role);
68857+
68858+ FOR_EACH_NESTED_SUBJECT_START(role, subj)
68859+ if ((subj->inode == ino) && (subj->device == dev)) {
68860+ subj->inode = ino;
68861+ subj->device = dev;
68862+ }
68863+ /* nested subjects aren't in the role's subj_hash table */
68864+ update_acl_obj_label(matchn->inode, matchn->device,
68865+ ino, dev, subj);
68866+ FOR_EACH_NESTED_SUBJECT_END(subj)
68867+ FOR_EACH_SUBJECT_START(role, subj, x)
68868+ update_acl_obj_label(matchn->inode, matchn->device,
68869+ ino, dev, subj);
68870+ FOR_EACH_SUBJECT_END(subj,x)
68871+ FOR_EACH_ROLE_END(role)
68872+
68873+ update_inodev_entry(matchn->inode, matchn->device, ino, dev);
68874+
68875+ return;
68876+}
68877+
68878+static void
68879+do_handle_create(const struct name_entry *matchn, const struct dentry *dentry,
68880+ const struct vfsmount *mnt)
68881+{
68882+ ino_t ino = dentry->d_inode->i_ino;
68883+ dev_t dev = __get_dev(dentry);
68884+
68885+ __do_handle_create(matchn, ino, dev);
68886+
68887+ return;
68888+}
68889+
68890+void
68891+gr_handle_create(const struct dentry *dentry, const struct vfsmount *mnt)
68892+{
68893+ struct name_entry *matchn;
68894+
68895+ if (unlikely(!(gr_status & GR_READY)))
68896+ return;
68897+
68898+ preempt_disable();
68899+ matchn = lookup_name_entry(gr_to_filename_rbac(dentry, mnt));
68900+
68901+ if (unlikely((unsigned long)matchn)) {
68902+ write_lock(&gr_inode_lock);
68903+ do_handle_create(matchn, dentry, mnt);
68904+ write_unlock(&gr_inode_lock);
68905+ }
68906+ preempt_enable();
68907+
68908+ return;
68909+}
68910+
68911+void
68912+gr_handle_proc_create(const struct dentry *dentry, const struct inode *inode)
68913+{
68914+ struct name_entry *matchn;
68915+
68916+ if (unlikely(!(gr_status & GR_READY)))
68917+ return;
68918+
68919+ preempt_disable();
68920+ matchn = lookup_name_entry(gr_to_proc_filename_rbac(dentry, init_pid_ns.proc_mnt));
68921+
68922+ if (unlikely((unsigned long)matchn)) {
68923+ write_lock(&gr_inode_lock);
68924+ __do_handle_create(matchn, inode->i_ino, inode->i_sb->s_dev);
68925+ write_unlock(&gr_inode_lock);
68926+ }
68927+ preempt_enable();
68928+
68929+ return;
68930+}
68931+
68932+void
68933+gr_handle_rename(struct inode *old_dir, struct inode *new_dir,
68934+ struct dentry *old_dentry,
68935+ struct dentry *new_dentry,
68936+ struct vfsmount *mnt, const __u8 replace, unsigned int flags)
68937+{
68938+ struct name_entry *matchn;
68939+ struct name_entry *matchn2 = NULL;
68940+ struct inodev_entry *inodev;
68941+ struct inode *inode = new_dentry->d_inode;
68942+ ino_t old_ino = old_dentry->d_inode->i_ino;
68943+ dev_t old_dev = __get_dev(old_dentry);
68944+ unsigned int exchange = flags & RENAME_EXCHANGE;
68945+
68946+ /* vfs_rename swaps the name and parent link for old_dentry and
68947+ new_dentry
68948+ at this point, old_dentry has the new name, parent link, and inode
68949+ for the renamed file
68950+ if a file is being replaced by a rename, new_dentry has the inode
68951+ and name for the replaced file
68952+ */
68953+
68954+ if (unlikely(!(gr_status & GR_READY)))
68955+ return;
68956+
68957+ preempt_disable();
68958+ matchn = lookup_name_entry(gr_to_filename_rbac(old_dentry, mnt));
68959+
68960+ /* exchange cases:
68961+ a filename exists for the source, but not dest
68962+ do a recreate on source
68963+ a filename exists for the dest, but not source
68964+ do a recreate on dest
68965+ a filename exists for both source and dest
68966+ delete source and dest, then create source and dest
68967+ a filename exists for neither source nor dest
68968+ no updates needed
68969+
68970+ the name entry lookups get us the old inode/dev associated with
68971+ each name, so do the deletes first (if possible) so that when
68972+ we do the create, we pick up on the right entries
68973+ */
68974+
68975+ if (exchange)
68976+ matchn2 = lookup_name_entry(gr_to_filename_rbac(new_dentry, mnt));
68977+
68978+ /* we wouldn't have to check d_inode if it weren't for
68979+ NFS silly-renaming
68980+ */
68981+
68982+ write_lock(&gr_inode_lock);
68983+ if (unlikely((replace || exchange) && inode)) {
68984+ ino_t new_ino = inode->i_ino;
68985+ dev_t new_dev = __get_dev(new_dentry);
68986+
68987+ inodev = lookup_inodev_entry(new_ino, new_dev);
68988+ if (inodev != NULL && ((inode->i_nlink <= 1) || S_ISDIR(inode->i_mode)))
68989+ do_handle_delete(inodev, new_ino, new_dev);
68990+ }
68991+
68992+ inodev = lookup_inodev_entry(old_ino, old_dev);
68993+ if (inodev != NULL && ((old_dentry->d_inode->i_nlink <= 1) || S_ISDIR(old_dentry->d_inode->i_mode)))
68994+ do_handle_delete(inodev, old_ino, old_dev);
68995+
68996+ if (unlikely(matchn != NULL))
68997+ do_handle_create(matchn, old_dentry, mnt);
68998+
68999+ if (unlikely(matchn2 != NULL))
69000+ do_handle_create(matchn2, new_dentry, mnt);
69001+
69002+ write_unlock(&gr_inode_lock);
69003+ preempt_enable();
69004+
69005+ return;
69006+}
69007+
69008+#if defined(CONFIG_GRKERNSEC_RESLOG) || !defined(CONFIG_GRKERNSEC_NO_RBAC)
69009+static const unsigned long res_learn_bumps[GR_NLIMITS] = {
69010+ [RLIMIT_CPU] = GR_RLIM_CPU_BUMP,
69011+ [RLIMIT_FSIZE] = GR_RLIM_FSIZE_BUMP,
69012+ [RLIMIT_DATA] = GR_RLIM_DATA_BUMP,
69013+ [RLIMIT_STACK] = GR_RLIM_STACK_BUMP,
69014+ [RLIMIT_CORE] = GR_RLIM_CORE_BUMP,
69015+ [RLIMIT_RSS] = GR_RLIM_RSS_BUMP,
69016+ [RLIMIT_NPROC] = GR_RLIM_NPROC_BUMP,
69017+ [RLIMIT_NOFILE] = GR_RLIM_NOFILE_BUMP,
69018+ [RLIMIT_MEMLOCK] = GR_RLIM_MEMLOCK_BUMP,
69019+ [RLIMIT_AS] = GR_RLIM_AS_BUMP,
69020+ [RLIMIT_LOCKS] = GR_RLIM_LOCKS_BUMP,
69021+ [RLIMIT_SIGPENDING] = GR_RLIM_SIGPENDING_BUMP,
69022+ [RLIMIT_MSGQUEUE] = GR_RLIM_MSGQUEUE_BUMP,
69023+ [RLIMIT_NICE] = GR_RLIM_NICE_BUMP,
69024+ [RLIMIT_RTPRIO] = GR_RLIM_RTPRIO_BUMP,
69025+ [RLIMIT_RTTIME] = GR_RLIM_RTTIME_BUMP
69026+};
69027+
69028+void
69029+gr_learn_resource(const struct task_struct *task,
69030+ const int res, const unsigned long wanted, const int gt)
69031+{
69032+ struct acl_subject_label *acl;
69033+ const struct cred *cred;
69034+
69035+ if (unlikely((gr_status & GR_READY) &&
69036+ task->acl && (task->acl->mode & (GR_LEARN | GR_INHERITLEARN))))
69037+ goto skip_reslog;
69038+
69039+ gr_log_resource(task, res, wanted, gt);
69040+skip_reslog:
69041+
69042+ if (unlikely(!(gr_status & GR_READY) || !wanted || res >= GR_NLIMITS))
69043+ return;
69044+
69045+ acl = task->acl;
69046+
69047+ if (likely(!acl || !(acl->mode & (GR_LEARN | GR_INHERITLEARN)) ||
69048+ !(acl->resmask & (1U << (unsigned short) res))))
69049+ return;
69050+
69051+ if (wanted >= acl->res[res].rlim_cur) {
69052+ unsigned long res_add;
69053+
69054+ res_add = wanted + res_learn_bumps[res];
69055+
69056+ acl->res[res].rlim_cur = res_add;
69057+
69058+ if (wanted > acl->res[res].rlim_max)
69059+ acl->res[res].rlim_max = res_add;
69060+
69061+ /* only log the subject filename, since resource logging is supported for
69062+ single-subject learning only */
69063+ rcu_read_lock();
69064+ cred = __task_cred(task);
69065+ security_learn(GR_LEARN_AUDIT_MSG, task->role->rolename,
69066+ task->role->roletype, GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid), acl->filename,
69067+ acl->filename, acl->res[res].rlim_cur, acl->res[res].rlim_max,
69068+ "", (unsigned long) res, &task->signal->saved_ip);
69069+ rcu_read_unlock();
69070+ }
69071+
69072+ return;
69073+}
69074+EXPORT_SYMBOL_GPL(gr_learn_resource);
69075+#endif
69076+
69077+#if defined(CONFIG_PAX_HAVE_ACL_FLAGS) && (defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR))
69078+void
69079+pax_set_initial_flags(struct linux_binprm *bprm)
69080+{
69081+ struct task_struct *task = current;
69082+ struct acl_subject_label *proc;
69083+ unsigned long flags;
69084+
69085+ if (unlikely(!(gr_status & GR_READY)))
69086+ return;
69087+
69088+ flags = pax_get_flags(task);
69089+
69090+ proc = task->acl;
69091+
69092+ if (proc->pax_flags & GR_PAX_DISABLE_PAGEEXEC)
69093+ flags &= ~MF_PAX_PAGEEXEC;
69094+ if (proc->pax_flags & GR_PAX_DISABLE_SEGMEXEC)
69095+ flags &= ~MF_PAX_SEGMEXEC;
69096+ if (proc->pax_flags & GR_PAX_DISABLE_RANDMMAP)
69097+ flags &= ~MF_PAX_RANDMMAP;
69098+ if (proc->pax_flags & GR_PAX_DISABLE_EMUTRAMP)
69099+ flags &= ~MF_PAX_EMUTRAMP;
69100+ if (proc->pax_flags & GR_PAX_DISABLE_MPROTECT)
69101+ flags &= ~MF_PAX_MPROTECT;
69102+
69103+ if (proc->pax_flags & GR_PAX_ENABLE_PAGEEXEC)
69104+ flags |= MF_PAX_PAGEEXEC;
69105+ if (proc->pax_flags & GR_PAX_ENABLE_SEGMEXEC)
69106+ flags |= MF_PAX_SEGMEXEC;
69107+ if (proc->pax_flags & GR_PAX_ENABLE_RANDMMAP)
69108+ flags |= MF_PAX_RANDMMAP;
69109+ if (proc->pax_flags & GR_PAX_ENABLE_EMUTRAMP)
69110+ flags |= MF_PAX_EMUTRAMP;
69111+ if (proc->pax_flags & GR_PAX_ENABLE_MPROTECT)
69112+ flags |= MF_PAX_MPROTECT;
69113+
69114+ pax_set_flags(task, flags);
69115+
69116+ return;
69117+}
69118+#endif
69119+
69120+int
69121+gr_handle_proc_ptrace(struct task_struct *task)
69122+{
69123+ struct file *filp;
69124+ struct task_struct *tmp = task;
69125+ struct task_struct *curtemp = current;
69126+ __u32 retmode;
69127+
69128+#ifndef CONFIG_GRKERNSEC_HARDEN_PTRACE
69129+ if (unlikely(!(gr_status & GR_READY)))
69130+ return 0;
69131+#endif
69132+
69133+ read_lock(&tasklist_lock);
69134+ read_lock(&grsec_exec_file_lock);
69135+ filp = task->exec_file;
69136+
69137+ while (task_pid_nr(tmp) > 0) {
69138+ if (tmp == curtemp)
69139+ break;
69140+ tmp = tmp->real_parent;
69141+ }
69142+
69143+ if (!filp || (task_pid_nr(tmp) == 0 && ((grsec_enable_harden_ptrace && gr_is_global_nonroot(current_uid()) && !(gr_status & GR_READY)) ||
69144+ ((gr_status & GR_READY) && !(current->acl->mode & GR_RELAXPTRACE))))) {
69145+ read_unlock(&grsec_exec_file_lock);
69146+ read_unlock(&tasklist_lock);
69147+ return 1;
69148+ }
69149+
69150+#ifdef CONFIG_GRKERNSEC_HARDEN_PTRACE
69151+ if (!(gr_status & GR_READY)) {
69152+ read_unlock(&grsec_exec_file_lock);
69153+ read_unlock(&tasklist_lock);
69154+ return 0;
69155+ }
69156+#endif
69157+
69158+ retmode = gr_search_file(filp->f_path.dentry, GR_NOPTRACE, filp->f_path.mnt);
69159+ read_unlock(&grsec_exec_file_lock);
69160+ read_unlock(&tasklist_lock);
69161+
69162+ if (retmode & GR_NOPTRACE)
69163+ return 1;
69164+
69165+ if (!(current->acl->mode & GR_POVERRIDE) && !(current->role->roletype & GR_ROLE_GOD)
69166+ && (current->acl != task->acl || (current->acl != current->role->root_label
69167+ && task_pid_nr(current) != task_pid_nr(task))))
69168+ return 1;
69169+
69170+ return 0;
69171+}
69172+
69173+void task_grsec_rbac(struct seq_file *m, struct task_struct *p)
69174+{
69175+ if (unlikely(!(gr_status & GR_READY)))
69176+ return;
69177+
69178+ if (!(current->role->roletype & GR_ROLE_GOD))
69179+ return;
69180+
69181+ seq_printf(m, "RBAC:\t%.64s:%c:%.950s\n",
69182+ p->role->rolename, gr_task_roletype_to_char(p),
69183+ p->acl->filename);
69184+}
69185+
69186+int
69187+gr_handle_ptrace(struct task_struct *task, const long request)
69188+{
69189+ struct task_struct *tmp = task;
69190+ struct task_struct *curtemp = current;
69191+ __u32 retmode;
69192+
69193+#ifndef CONFIG_GRKERNSEC_HARDEN_PTRACE
69194+ if (unlikely(!(gr_status & GR_READY)))
69195+ return 0;
69196+#endif
69197+ if (request == PTRACE_ATTACH || request == PTRACE_SEIZE) {
69198+ read_lock(&tasklist_lock);
69199+ while (task_pid_nr(tmp) > 0) {
69200+ if (tmp == curtemp)
69201+ break;
69202+ tmp = tmp->real_parent;
69203+ }
69204+
69205+ if (task_pid_nr(tmp) == 0 && ((grsec_enable_harden_ptrace && gr_is_global_nonroot(current_uid()) && !(gr_status & GR_READY)) ||
69206+ ((gr_status & GR_READY) && !(current->acl->mode & GR_RELAXPTRACE)))) {
69207+ read_unlock(&tasklist_lock);
69208+ gr_log_ptrace(GR_DONT_AUDIT, GR_PTRACE_ACL_MSG, task);
69209+ return 1;
69210+ }
69211+ read_unlock(&tasklist_lock);
69212+ }
69213+
69214+#ifdef CONFIG_GRKERNSEC_HARDEN_PTRACE
69215+ if (!(gr_status & GR_READY))
69216+ return 0;
69217+#endif
69218+
69219+ read_lock(&grsec_exec_file_lock);
69220+ if (unlikely(!task->exec_file)) {
69221+ read_unlock(&grsec_exec_file_lock);
69222+ return 0;
69223+ }
69224+
69225+ retmode = gr_search_file(task->exec_file->f_path.dentry, GR_PTRACERD | GR_NOPTRACE, task->exec_file->f_path.mnt);
69226+ read_unlock(&grsec_exec_file_lock);
69227+
69228+ if (retmode & GR_NOPTRACE) {
69229+ gr_log_ptrace(GR_DONT_AUDIT, GR_PTRACE_ACL_MSG, task);
69230+ return 1;
69231+ }
69232+
69233+ if (retmode & GR_PTRACERD) {
69234+ switch (request) {
69235+ case PTRACE_SEIZE:
69236+ case PTRACE_POKETEXT:
69237+ case PTRACE_POKEDATA:
69238+ case PTRACE_POKEUSR:
69239+#if !defined(CONFIG_PPC32) && !defined(CONFIG_PPC64) && !defined(CONFIG_PARISC) && !defined(CONFIG_ALPHA) && !defined(CONFIG_IA64)
69240+ case PTRACE_SETREGS:
69241+ case PTRACE_SETFPREGS:
69242+#endif
69243+#ifdef CONFIG_X86
69244+ case PTRACE_SETFPXREGS:
69245+#endif
69246+#ifdef CONFIG_ALTIVEC
69247+ case PTRACE_SETVRREGS:
69248+#endif
69249+ return 1;
69250+ default:
69251+ return 0;
69252+ }
69253+ } else if (!(current->acl->mode & GR_POVERRIDE) &&
69254+ !(current->role->roletype & GR_ROLE_GOD) &&
69255+ (current->acl != task->acl)) {
69256+ gr_log_ptrace(GR_DONT_AUDIT, GR_PTRACE_ACL_MSG, task);
69257+ return 1;
69258+ }
69259+
69260+ return 0;
69261+}
69262+
69263+static int is_writable_mmap(const struct file *filp)
69264+{
69265+ struct task_struct *task = current;
69266+ struct acl_object_label *obj, *obj2;
69267+
69268+ if (gr_status & GR_READY && !(task->acl->mode & GR_OVERRIDE) &&
69269+ !task->is_writable && S_ISREG(filp->f_path.dentry->d_inode->i_mode) && (filp->f_path.mnt != shm_mnt || (filp->f_path.dentry->d_inode->i_nlink > 0))) {
69270+ obj = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt, running_polstate.default_role->root_label);
69271+ obj2 = chk_obj_label(filp->f_path.dentry, filp->f_path.mnt,
69272+ task->role->root_label);
69273+ if (unlikely((obj->mode & GR_WRITE) || (obj2->mode & GR_WRITE))) {
69274+ gr_log_fs_generic(GR_DONT_AUDIT, GR_WRITLIB_ACL_MSG, filp->f_path.dentry, filp->f_path.mnt);
69275+ return 1;
69276+ }
69277+ }
69278+ return 0;
69279+}
69280+
69281+int
69282+gr_acl_handle_mmap(const struct file *file, const unsigned long prot)
69283+{
69284+ __u32 mode;
69285+
69286+ if (unlikely(!file || !(prot & PROT_EXEC)))
69287+ return 1;
69288+
69289+ if (is_writable_mmap(file))
69290+ return 0;
69291+
69292+ mode =
69293+ gr_search_file(file->f_path.dentry,
69294+ GR_EXEC | GR_AUDIT_EXEC | GR_SUPPRESS,
69295+ file->f_path.mnt);
69296+
69297+ if (!gr_tpe_allow(file))
69298+ return 0;
69299+
69300+ if (unlikely(!(mode & GR_EXEC) && !(mode & GR_SUPPRESS))) {
69301+ gr_log_fs_rbac_generic(GR_DONT_AUDIT, GR_MMAP_ACL_MSG, file->f_path.dentry, file->f_path.mnt);
69302+ return 0;
69303+ } else if (unlikely(!(mode & GR_EXEC))) {
69304+ return 0;
69305+ } else if (unlikely(mode & GR_EXEC && mode & GR_AUDIT_EXEC)) {
69306+ gr_log_fs_rbac_generic(GR_DO_AUDIT, GR_MMAP_ACL_MSG, file->f_path.dentry, file->f_path.mnt);
69307+ return 1;
69308+ }
69309+
69310+ return 1;
69311+}
69312+
69313+int
69314+gr_acl_handle_mprotect(const struct file *file, const unsigned long prot)
69315+{
69316+ __u32 mode;
69317+
69318+ if (unlikely(!file || !(prot & PROT_EXEC)))
69319+ return 1;
69320+
69321+ if (is_writable_mmap(file))
69322+ return 0;
69323+
69324+ mode =
69325+ gr_search_file(file->f_path.dentry,
69326+ GR_EXEC | GR_AUDIT_EXEC | GR_SUPPRESS,
69327+ file->f_path.mnt);
69328+
69329+ if (!gr_tpe_allow(file))
69330+ return 0;
69331+
69332+ if (unlikely(!(mode & GR_EXEC) && !(mode & GR_SUPPRESS))) {
69333+ gr_log_fs_rbac_generic(GR_DONT_AUDIT, GR_MPROTECT_ACL_MSG, file->f_path.dentry, file->f_path.mnt);
69334+ return 0;
69335+ } else if (unlikely(!(mode & GR_EXEC))) {
69336+ return 0;
69337+ } else if (unlikely(mode & GR_EXEC && mode & GR_AUDIT_EXEC)) {
69338+ gr_log_fs_rbac_generic(GR_DO_AUDIT, GR_MPROTECT_ACL_MSG, file->f_path.dentry, file->f_path.mnt);
69339+ return 1;
69340+ }
69341+
69342+ return 1;
69343+}
69344+
69345+void
69346+gr_acl_handle_psacct(struct task_struct *task, const long code)
69347+{
69348+ unsigned long runtime, cputime;
69349+ cputime_t utime, stime;
69350+ unsigned int wday, cday;
69351+ __u8 whr, chr;
69352+ __u8 wmin, cmin;
69353+ __u8 wsec, csec;
69354+ struct timespec timeval;
69355+
69356+ if (unlikely(!(gr_status & GR_READY) || !task->acl ||
69357+ !(task->acl->mode & GR_PROCACCT)))
69358+ return;
69359+
69360+ do_posix_clock_monotonic_gettime(&timeval);
69361+ runtime = timeval.tv_sec - task->start_time.tv_sec;
69362+ wday = runtime / (60 * 60 * 24);
69363+ runtime -= wday * (60 * 60 * 24);
69364+ whr = runtime / (60 * 60);
69365+ runtime -= whr * (60 * 60);
69366+ wmin = runtime / 60;
69367+ runtime -= wmin * 60;
69368+ wsec = runtime;
69369+
69370+ task_cputime(task, &utime, &stime);
69371+ cputime = cputime_to_secs(utime + stime);
69372+ cday = cputime / (60 * 60 * 24);
69373+ cputime -= cday * (60 * 60 * 24);
69374+ chr = cputime / (60 * 60);
69375+ cputime -= chr * (60 * 60);
69376+ cmin = cputime / 60;
69377+ cputime -= cmin * 60;
69378+ csec = cputime;
69379+
69380+ gr_log_procacct(GR_DO_AUDIT, GR_ACL_PROCACCT_MSG, task, wday, whr, wmin, wsec, cday, chr, cmin, csec, code);
69381+
69382+ return;
69383+}
69384+
69385+#ifdef CONFIG_TASKSTATS
69386+int gr_is_taskstats_denied(int pid)
69387+{
69388+ struct task_struct *task;
69389+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
69390+ const struct cred *cred;
69391+#endif
69392+ int ret = 0;
69393+
69394+ /* restrict taskstats viewing to un-chrooted root users
69395+ who have the 'view' subject flag if the RBAC system is enabled
69396+ */
69397+
69398+ rcu_read_lock();
69399+ read_lock(&tasklist_lock);
69400+ task = find_task_by_vpid(pid);
69401+ if (task) {
69402+#ifdef CONFIG_GRKERNSEC_CHROOT
69403+ if (proc_is_chrooted(task))
69404+ ret = -EACCES;
69405+#endif
69406+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
69407+ cred = __task_cred(task);
69408+#ifdef CONFIG_GRKERNSEC_PROC_USER
69409+ if (gr_is_global_nonroot(cred->uid))
69410+ ret = -EACCES;
69411+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
69412+ if (gr_is_global_nonroot(cred->uid) && !groups_search(cred->group_info, grsec_proc_gid))
69413+ ret = -EACCES;
69414+#endif
69415+#endif
69416+ if (gr_status & GR_READY) {
69417+ if (!(task->acl->mode & GR_VIEW))
69418+ ret = -EACCES;
69419+ }
69420+ } else
69421+ ret = -ENOENT;
69422+
69423+ read_unlock(&tasklist_lock);
69424+ rcu_read_unlock();
69425+
69426+ return ret;
69427+}
69428+#endif
69429+
69430+/* AUXV entries are filled via a descendant of search_binary_handler
69431+ after we've already applied the subject for the target
69432+*/
69433+int gr_acl_enable_at_secure(void)
69434+{
69435+ if (unlikely(!(gr_status & GR_READY)))
69436+ return 0;
69437+
69438+ if (current->acl->mode & GR_ATSECURE)
69439+ return 1;
69440+
69441+ return 0;
69442+}
69443+
69444+int gr_acl_handle_filldir(const struct file *file, const char *name, const unsigned int namelen, const ino_t ino)
69445+{
69446+ struct task_struct *task = current;
69447+ struct dentry *dentry = file->f_path.dentry;
69448+ struct vfsmount *mnt = file->f_path.mnt;
69449+ struct acl_object_label *obj, *tmp;
69450+ struct acl_subject_label *subj;
69451+ unsigned int bufsize;
69452+ int is_not_root;
69453+ char *path;
69454+ dev_t dev = __get_dev(dentry);
69455+
69456+ if (unlikely(!(gr_status & GR_READY)))
69457+ return 1;
69458+
69459+ if (task->acl->mode & (GR_LEARN | GR_INHERITLEARN))
69460+ return 1;
69461+
69462+ /* ignore Eric Biederman */
69463+ if (IS_PRIVATE(dentry->d_inode))
69464+ return 1;
69465+
69466+ subj = task->acl;
69467+ read_lock(&gr_inode_lock);
69468+ do {
69469+ obj = lookup_acl_obj_label(ino, dev, subj);
69470+ if (obj != NULL) {
69471+ read_unlock(&gr_inode_lock);
69472+ return (obj->mode & GR_FIND) ? 1 : 0;
69473+ }
69474+ } while ((subj = subj->parent_subject));
69475+ read_unlock(&gr_inode_lock);
69476+
69477+ /* this is purely an optimization since we're looking for an object
69478+ for the directory we're doing a readdir on
69479+ if it's possible for any globbed object to match the entry we're
69480+ filling into the directory, then the object we find here will be
69481+ an anchor point with attached globbed objects
69482+ */
69483+ obj = chk_obj_label_noglob(dentry, mnt, task->acl);
69484+ if (obj->globbed == NULL)
69485+ return (obj->mode & GR_FIND) ? 1 : 0;
69486+
69487+ is_not_root = ((obj->filename[0] == '/') &&
69488+ (obj->filename[1] == '\0')) ? 0 : 1;
69489+ bufsize = PAGE_SIZE - namelen - is_not_root;
69490+
69491+ /* check bufsize > PAGE_SIZE || bufsize == 0 */
69492+ if (unlikely((bufsize - 1) > (PAGE_SIZE - 1)))
69493+ return 1;
69494+
69495+ preempt_disable();
69496+ path = d_real_path(dentry, mnt, per_cpu_ptr(gr_shared_page[0], smp_processor_id()),
69497+ bufsize);
69498+
69499+ bufsize = strlen(path);
69500+
69501+ /* if base is "/", don't append an additional slash */
69502+ if (is_not_root)
69503+ *(path + bufsize) = '/';
69504+ memcpy(path + bufsize + is_not_root, name, namelen);
69505+ *(path + bufsize + namelen + is_not_root) = '\0';
69506+
69507+ tmp = obj->globbed;
69508+ while (tmp) {
69509+ if (!glob_match(tmp->filename, path)) {
69510+ preempt_enable();
69511+ return (tmp->mode & GR_FIND) ? 1 : 0;
69512+ }
69513+ tmp = tmp->next;
69514+ }
69515+ preempt_enable();
69516+ return (obj->mode & GR_FIND) ? 1 : 0;
69517+}
69518+
69519+void gr_put_exec_file(struct task_struct *task)
69520+{
69521+ struct file *filp;
69522+
69523+ write_lock(&grsec_exec_file_lock);
69524+ filp = task->exec_file;
69525+ task->exec_file = NULL;
69526+ write_unlock(&grsec_exec_file_lock);
69527+
69528+ if (filp)
69529+ fput(filp);
69530+
69531+ return;
69532+}
69533+
69534+
69535+#ifdef CONFIG_NETFILTER_XT_MATCH_GRADM_MODULE
69536+EXPORT_SYMBOL_GPL(gr_acl_is_enabled);
69537+#endif
69538+#ifdef CONFIG_SECURITY
69539+EXPORT_SYMBOL_GPL(gr_check_user_change);
69540+EXPORT_SYMBOL_GPL(gr_check_group_change);
69541+#endif
69542+
69543diff --git a/grsecurity/gracl_alloc.c b/grsecurity/gracl_alloc.c
69544new file mode 100644
69545index 0000000..18ffbbd
69546--- /dev/null
69547+++ b/grsecurity/gracl_alloc.c
69548@@ -0,0 +1,105 @@
69549+#include <linux/kernel.h>
69550+#include <linux/mm.h>
69551+#include <linux/slab.h>
69552+#include <linux/vmalloc.h>
69553+#include <linux/gracl.h>
69554+#include <linux/grsecurity.h>
69555+
69556+static struct gr_alloc_state __current_alloc_state = { 1, 1, NULL };
69557+struct gr_alloc_state *current_alloc_state = &__current_alloc_state;
69558+
69559+static __inline__ int
69560+alloc_pop(void)
69561+{
69562+ if (current_alloc_state->alloc_stack_next == 1)
69563+ return 0;
69564+
69565+ kfree(current_alloc_state->alloc_stack[current_alloc_state->alloc_stack_next - 2]);
69566+
69567+ current_alloc_state->alloc_stack_next--;
69568+
69569+ return 1;
69570+}
69571+
69572+static __inline__ int
69573+alloc_push(void *buf)
69574+{
69575+ if (current_alloc_state->alloc_stack_next >= current_alloc_state->alloc_stack_size)
69576+ return 1;
69577+
69578+ current_alloc_state->alloc_stack[current_alloc_state->alloc_stack_next - 1] = buf;
69579+
69580+ current_alloc_state->alloc_stack_next++;
69581+
69582+ return 0;
69583+}
69584+
69585+void *
69586+acl_alloc(unsigned long len)
69587+{
69588+ void *ret = NULL;
69589+
69590+ if (!len || len > PAGE_SIZE)
69591+ goto out;
69592+
69593+ ret = kmalloc(len, GFP_KERNEL);
69594+
69595+ if (ret) {
69596+ if (alloc_push(ret)) {
69597+ kfree(ret);
69598+ ret = NULL;
69599+ }
69600+ }
69601+
69602+out:
69603+ return ret;
69604+}
69605+
69606+void *
69607+acl_alloc_num(unsigned long num, unsigned long len)
69608+{
69609+ if (!len || (num > (PAGE_SIZE / len)))
69610+ return NULL;
69611+
69612+ return acl_alloc(num * len);
69613+}
69614+
69615+void
69616+acl_free_all(void)
69617+{
69618+ if (!current_alloc_state->alloc_stack)
69619+ return;
69620+
69621+ while (alloc_pop()) ;
69622+
69623+ if (current_alloc_state->alloc_stack) {
69624+ if ((current_alloc_state->alloc_stack_size * sizeof (void *)) <= PAGE_SIZE)
69625+ kfree(current_alloc_state->alloc_stack);
69626+ else
69627+ vfree(current_alloc_state->alloc_stack);
69628+ }
69629+
69630+ current_alloc_state->alloc_stack = NULL;
69631+ current_alloc_state->alloc_stack_size = 1;
69632+ current_alloc_state->alloc_stack_next = 1;
69633+
69634+ return;
69635+}
69636+
69637+int
69638+acl_alloc_stack_init(unsigned long size)
69639+{
69640+ if ((size * sizeof (void *)) <= PAGE_SIZE)
69641+ current_alloc_state->alloc_stack =
69642+ (void **) kmalloc(size * sizeof (void *), GFP_KERNEL);
69643+ else
69644+ current_alloc_state->alloc_stack = (void **) vmalloc(size * sizeof (void *));
69645+
69646+ current_alloc_state->alloc_stack_size = size;
69647+ current_alloc_state->alloc_stack_next = 1;
69648+
69649+ if (!current_alloc_state->alloc_stack)
69650+ return 0;
69651+ else
69652+ return 1;
69653+}
69654diff --git a/grsecurity/gracl_cap.c b/grsecurity/gracl_cap.c
69655new file mode 100644
69656index 0000000..bdd51ea
69657--- /dev/null
69658+++ b/grsecurity/gracl_cap.c
69659@@ -0,0 +1,110 @@
69660+#include <linux/kernel.h>
69661+#include <linux/module.h>
69662+#include <linux/sched.h>
69663+#include <linux/gracl.h>
69664+#include <linux/grsecurity.h>
69665+#include <linux/grinternal.h>
69666+
69667+extern const char *captab_log[];
69668+extern int captab_log_entries;
69669+
69670+int gr_task_acl_is_capable(const struct task_struct *task, const struct cred *cred, const int cap)
69671+{
69672+ struct acl_subject_label *curracl;
69673+ kernel_cap_t cap_drop = __cap_empty_set, cap_mask = __cap_empty_set;
69674+ kernel_cap_t cap_audit = __cap_empty_set;
69675+
69676+ if (!gr_acl_is_enabled())
69677+ return 1;
69678+
69679+ curracl = task->acl;
69680+
69681+ cap_drop = curracl->cap_lower;
69682+ cap_mask = curracl->cap_mask;
69683+ cap_audit = curracl->cap_invert_audit;
69684+
69685+ while ((curracl = curracl->parent_subject)) {
69686+ /* if the cap isn't specified in the current computed mask but is specified in the
69687+ current level subject, and is lowered in the current level subject, then add
69688+ it to the set of dropped capabilities
69689+ otherwise, add the current level subject's mask to the current computed mask
69690+ */
69691+ if (!cap_raised(cap_mask, cap) && cap_raised(curracl->cap_mask, cap)) {
69692+ cap_raise(cap_mask, cap);
69693+ if (cap_raised(curracl->cap_lower, cap))
69694+ cap_raise(cap_drop, cap);
69695+ if (cap_raised(curracl->cap_invert_audit, cap))
69696+ cap_raise(cap_audit, cap);
69697+ }
69698+ }
69699+
69700+ if (!cap_raised(cap_drop, cap)) {
69701+ if (cap_raised(cap_audit, cap))
69702+ gr_log_cap(GR_DO_AUDIT, GR_CAP_ACL_MSG2, task, captab_log[cap]);
69703+ return 1;
69704+ }
69705+
69706+ curracl = task->acl;
69707+
69708+ if ((curracl->mode & (GR_LEARN | GR_INHERITLEARN))
69709+ && cap_raised(cred->cap_effective, cap)) {
69710+ security_learn(GR_LEARN_AUDIT_MSG, task->role->rolename,
69711+ task->role->roletype, GR_GLOBAL_UID(cred->uid),
69712+ GR_GLOBAL_GID(cred->gid), task->exec_file ?
69713+ gr_to_filename(task->exec_file->f_path.dentry,
69714+ task->exec_file->f_path.mnt) : curracl->filename,
69715+ curracl->filename, 0UL,
69716+ 0UL, "", (unsigned long) cap, &task->signal->saved_ip);
69717+ return 1;
69718+ }
69719+
69720+ if ((cap >= 0) && (cap < captab_log_entries) && cap_raised(cred->cap_effective, cap) && !cap_raised(cap_audit, cap))
69721+ gr_log_cap(GR_DONT_AUDIT, GR_CAP_ACL_MSG, task, captab_log[cap]);
69722+
69723+ return 0;
69724+}
69725+
69726+int
69727+gr_acl_is_capable(const int cap)
69728+{
69729+ return gr_task_acl_is_capable(current, current_cred(), cap);
69730+}
69731+
69732+int gr_task_acl_is_capable_nolog(const struct task_struct *task, const int cap)
69733+{
69734+ struct acl_subject_label *curracl;
69735+ kernel_cap_t cap_drop = __cap_empty_set, cap_mask = __cap_empty_set;
69736+
69737+ if (!gr_acl_is_enabled())
69738+ return 1;
69739+
69740+ curracl = task->acl;
69741+
69742+ cap_drop = curracl->cap_lower;
69743+ cap_mask = curracl->cap_mask;
69744+
69745+ while ((curracl = curracl->parent_subject)) {
69746+ /* if the cap isn't specified in the current computed mask but is specified in the
69747+ current level subject, and is lowered in the current level subject, then add
69748+ it to the set of dropped capabilities
69749+ otherwise, add the current level subject's mask to the current computed mask
69750+ */
69751+ if (!cap_raised(cap_mask, cap) && cap_raised(curracl->cap_mask, cap)) {
69752+ cap_raise(cap_mask, cap);
69753+ if (cap_raised(curracl->cap_lower, cap))
69754+ cap_raise(cap_drop, cap);
69755+ }
69756+ }
69757+
69758+ if (!cap_raised(cap_drop, cap))
69759+ return 1;
69760+
69761+ return 0;
69762+}
69763+
69764+int
69765+gr_acl_is_capable_nolog(const int cap)
69766+{
69767+ return gr_task_acl_is_capable_nolog(current, cap);
69768+}
69769+
69770diff --git a/grsecurity/gracl_compat.c b/grsecurity/gracl_compat.c
69771new file mode 100644
69772index 0000000..ca25605
69773--- /dev/null
69774+++ b/grsecurity/gracl_compat.c
69775@@ -0,0 +1,270 @@
69776+#include <linux/kernel.h>
69777+#include <linux/gracl.h>
69778+#include <linux/compat.h>
69779+#include <linux/gracl_compat.h>
69780+
69781+#include <asm/uaccess.h>
69782+
69783+int copy_gr_arg_wrapper_compat(const char *buf, struct gr_arg_wrapper *uwrap)
69784+{
69785+ struct gr_arg_wrapper_compat uwrapcompat;
69786+
69787+ if (copy_from_user(&uwrapcompat, buf, sizeof(uwrapcompat)))
69788+ return -EFAULT;
69789+
69790+ if (((uwrapcompat.version != GRSECURITY_VERSION) &&
69791+ (uwrapcompat.version != 0x2901)) ||
69792+ (uwrapcompat.size != sizeof(struct gr_arg_compat)))
69793+ return -EINVAL;
69794+
69795+ uwrap->arg = compat_ptr(uwrapcompat.arg);
69796+ uwrap->version = uwrapcompat.version;
69797+ uwrap->size = sizeof(struct gr_arg);
69798+
69799+ return 0;
69800+}
69801+
69802+int copy_gr_arg_compat(const struct gr_arg __user *buf, struct gr_arg *arg)
69803+{
69804+ struct gr_arg_compat argcompat;
69805+
69806+ if (copy_from_user(&argcompat, buf, sizeof(argcompat)))
69807+ return -EFAULT;
69808+
69809+ arg->role_db.r_table = compat_ptr(argcompat.role_db.r_table);
69810+ arg->role_db.num_pointers = argcompat.role_db.num_pointers;
69811+ arg->role_db.num_roles = argcompat.role_db.num_roles;
69812+ arg->role_db.num_domain_children = argcompat.role_db.num_domain_children;
69813+ arg->role_db.num_subjects = argcompat.role_db.num_subjects;
69814+ arg->role_db.num_objects = argcompat.role_db.num_objects;
69815+
69816+ memcpy(&arg->pw, &argcompat.pw, sizeof(arg->pw));
69817+ memcpy(&arg->salt, &argcompat.salt, sizeof(arg->salt));
69818+ memcpy(&arg->sum, &argcompat.sum, sizeof(arg->sum));
69819+ memcpy(&arg->sp_role, &argcompat.sp_role, sizeof(arg->sp_role));
69820+ arg->sprole_pws = compat_ptr(argcompat.sprole_pws);
69821+ arg->segv_device = argcompat.segv_device;
69822+ arg->segv_inode = argcompat.segv_inode;
69823+ arg->segv_uid = argcompat.segv_uid;
69824+ arg->num_sprole_pws = argcompat.num_sprole_pws;
69825+ arg->mode = argcompat.mode;
69826+
69827+ return 0;
69828+}
69829+
69830+int copy_acl_object_label_compat(struct acl_object_label *obj, const struct acl_object_label *userp)
69831+{
69832+ struct acl_object_label_compat objcompat;
69833+
69834+ if (copy_from_user(&objcompat, userp, sizeof(objcompat)))
69835+ return -EFAULT;
69836+
69837+ obj->filename = compat_ptr(objcompat.filename);
69838+ obj->inode = objcompat.inode;
69839+ obj->device = objcompat.device;
69840+ obj->mode = objcompat.mode;
69841+
69842+ obj->nested = compat_ptr(objcompat.nested);
69843+ obj->globbed = compat_ptr(objcompat.globbed);
69844+
69845+ obj->prev = compat_ptr(objcompat.prev);
69846+ obj->next = compat_ptr(objcompat.next);
69847+
69848+ return 0;
69849+}
69850+
69851+int copy_acl_subject_label_compat(struct acl_subject_label *subj, const struct acl_subject_label *userp)
69852+{
69853+ unsigned int i;
69854+ struct acl_subject_label_compat subjcompat;
69855+
69856+ if (copy_from_user(&subjcompat, userp, sizeof(subjcompat)))
69857+ return -EFAULT;
69858+
69859+ subj->filename = compat_ptr(subjcompat.filename);
69860+ subj->inode = subjcompat.inode;
69861+ subj->device = subjcompat.device;
69862+ subj->mode = subjcompat.mode;
69863+ subj->cap_mask = subjcompat.cap_mask;
69864+ subj->cap_lower = subjcompat.cap_lower;
69865+ subj->cap_invert_audit = subjcompat.cap_invert_audit;
69866+
69867+ for (i = 0; i < GR_NLIMITS; i++) {
69868+ if (subjcompat.res[i].rlim_cur == COMPAT_RLIM_INFINITY)
69869+ subj->res[i].rlim_cur = RLIM_INFINITY;
69870+ else
69871+ subj->res[i].rlim_cur = subjcompat.res[i].rlim_cur;
69872+ if (subjcompat.res[i].rlim_max == COMPAT_RLIM_INFINITY)
69873+ subj->res[i].rlim_max = RLIM_INFINITY;
69874+ else
69875+ subj->res[i].rlim_max = subjcompat.res[i].rlim_max;
69876+ }
69877+ subj->resmask = subjcompat.resmask;
69878+
69879+ subj->user_trans_type = subjcompat.user_trans_type;
69880+ subj->group_trans_type = subjcompat.group_trans_type;
69881+ subj->user_transitions = compat_ptr(subjcompat.user_transitions);
69882+ subj->group_transitions = compat_ptr(subjcompat.group_transitions);
69883+ subj->user_trans_num = subjcompat.user_trans_num;
69884+ subj->group_trans_num = subjcompat.group_trans_num;
69885+
69886+ memcpy(&subj->sock_families, &subjcompat.sock_families, sizeof(subj->sock_families));
69887+ memcpy(&subj->ip_proto, &subjcompat.ip_proto, sizeof(subj->ip_proto));
69888+ subj->ip_type = subjcompat.ip_type;
69889+ subj->ips = compat_ptr(subjcompat.ips);
69890+ subj->ip_num = subjcompat.ip_num;
69891+ subj->inaddr_any_override = subjcompat.inaddr_any_override;
69892+
69893+ subj->crashes = subjcompat.crashes;
69894+ subj->expires = subjcompat.expires;
69895+
69896+ subj->parent_subject = compat_ptr(subjcompat.parent_subject);
69897+ subj->hash = compat_ptr(subjcompat.hash);
69898+ subj->prev = compat_ptr(subjcompat.prev);
69899+ subj->next = compat_ptr(subjcompat.next);
69900+
69901+ subj->obj_hash = compat_ptr(subjcompat.obj_hash);
69902+ subj->obj_hash_size = subjcompat.obj_hash_size;
69903+ subj->pax_flags = subjcompat.pax_flags;
69904+
69905+ return 0;
69906+}
69907+
69908+int copy_acl_role_label_compat(struct acl_role_label *role, const struct acl_role_label *userp)
69909+{
69910+ struct acl_role_label_compat rolecompat;
69911+
69912+ if (copy_from_user(&rolecompat, userp, sizeof(rolecompat)))
69913+ return -EFAULT;
69914+
69915+ role->rolename = compat_ptr(rolecompat.rolename);
69916+ role->uidgid = rolecompat.uidgid;
69917+ role->roletype = rolecompat.roletype;
69918+
69919+ role->auth_attempts = rolecompat.auth_attempts;
69920+ role->expires = rolecompat.expires;
69921+
69922+ role->root_label = compat_ptr(rolecompat.root_label);
69923+ role->hash = compat_ptr(rolecompat.hash);
69924+
69925+ role->prev = compat_ptr(rolecompat.prev);
69926+ role->next = compat_ptr(rolecompat.next);
69927+
69928+ role->transitions = compat_ptr(rolecompat.transitions);
69929+ role->allowed_ips = compat_ptr(rolecompat.allowed_ips);
69930+ role->domain_children = compat_ptr(rolecompat.domain_children);
69931+ role->domain_child_num = rolecompat.domain_child_num;
69932+
69933+ role->umask = rolecompat.umask;
69934+
69935+ role->subj_hash = compat_ptr(rolecompat.subj_hash);
69936+ role->subj_hash_size = rolecompat.subj_hash_size;
69937+
69938+ return 0;
69939+}
69940+
69941+int copy_role_allowed_ip_compat(struct role_allowed_ip *roleip, const struct role_allowed_ip *userp)
69942+{
69943+ struct role_allowed_ip_compat roleip_compat;
69944+
69945+ if (copy_from_user(&roleip_compat, userp, sizeof(roleip_compat)))
69946+ return -EFAULT;
69947+
69948+ roleip->addr = roleip_compat.addr;
69949+ roleip->netmask = roleip_compat.netmask;
69950+
69951+ roleip->prev = compat_ptr(roleip_compat.prev);
69952+ roleip->next = compat_ptr(roleip_compat.next);
69953+
69954+ return 0;
69955+}
69956+
69957+int copy_role_transition_compat(struct role_transition *trans, const struct role_transition *userp)
69958+{
69959+ struct role_transition_compat trans_compat;
69960+
69961+ if (copy_from_user(&trans_compat, userp, sizeof(trans_compat)))
69962+ return -EFAULT;
69963+
69964+ trans->rolename = compat_ptr(trans_compat.rolename);
69965+
69966+ trans->prev = compat_ptr(trans_compat.prev);
69967+ trans->next = compat_ptr(trans_compat.next);
69968+
69969+ return 0;
69970+
69971+}
69972+
69973+int copy_gr_hash_struct_compat(struct gr_hash_struct *hash, const struct gr_hash_struct *userp)
69974+{
69975+ struct gr_hash_struct_compat hash_compat;
69976+
69977+ if (copy_from_user(&hash_compat, userp, sizeof(hash_compat)))
69978+ return -EFAULT;
69979+
69980+ hash->table = compat_ptr(hash_compat.table);
69981+ hash->nametable = compat_ptr(hash_compat.nametable);
69982+ hash->first = compat_ptr(hash_compat.first);
69983+
69984+ hash->table_size = hash_compat.table_size;
69985+ hash->used_size = hash_compat.used_size;
69986+
69987+ hash->type = hash_compat.type;
69988+
69989+ return 0;
69990+}
69991+
69992+int copy_pointer_from_array_compat(void *ptr, unsigned long idx, const void *userp)
69993+{
69994+ compat_uptr_t ptrcompat;
69995+
69996+ if (copy_from_user(&ptrcompat, userp + (idx * sizeof(ptrcompat)), sizeof(ptrcompat)))
69997+ return -EFAULT;
69998+
69999+ *(void **)ptr = compat_ptr(ptrcompat);
70000+
70001+ return 0;
70002+}
70003+
70004+int copy_acl_ip_label_compat(struct acl_ip_label *ip, const struct acl_ip_label *userp)
70005+{
70006+ struct acl_ip_label_compat ip_compat;
70007+
70008+ if (copy_from_user(&ip_compat, userp, sizeof(ip_compat)))
70009+ return -EFAULT;
70010+
70011+ ip->iface = compat_ptr(ip_compat.iface);
70012+ ip->addr = ip_compat.addr;
70013+ ip->netmask = ip_compat.netmask;
70014+ ip->low = ip_compat.low;
70015+ ip->high = ip_compat.high;
70016+ ip->mode = ip_compat.mode;
70017+ ip->type = ip_compat.type;
70018+
70019+ memcpy(&ip->proto, &ip_compat.proto, sizeof(ip->proto));
70020+
70021+ ip->prev = compat_ptr(ip_compat.prev);
70022+ ip->next = compat_ptr(ip_compat.next);
70023+
70024+ return 0;
70025+}
70026+
70027+int copy_sprole_pw_compat(struct sprole_pw *pw, unsigned long idx, const struct sprole_pw *userp)
70028+{
70029+ struct sprole_pw_compat pw_compat;
70030+
70031+ if (copy_from_user(&pw_compat, (const void *)userp + (sizeof(pw_compat) * idx), sizeof(pw_compat)))
70032+ return -EFAULT;
70033+
70034+ pw->rolename = compat_ptr(pw_compat.rolename);
70035+ memcpy(&pw->salt, pw_compat.salt, sizeof(pw->salt));
70036+ memcpy(&pw->sum, pw_compat.sum, sizeof(pw->sum));
70037+
70038+ return 0;
70039+}
70040+
70041+size_t get_gr_arg_wrapper_size_compat(void)
70042+{
70043+ return sizeof(struct gr_arg_wrapper_compat);
70044+}
70045+
70046diff --git a/grsecurity/gracl_fs.c b/grsecurity/gracl_fs.c
70047new file mode 100644
70048index 0000000..4008fdc
70049--- /dev/null
70050+++ b/grsecurity/gracl_fs.c
70051@@ -0,0 +1,445 @@
70052+#include <linux/kernel.h>
70053+#include <linux/sched.h>
70054+#include <linux/types.h>
70055+#include <linux/fs.h>
70056+#include <linux/file.h>
70057+#include <linux/stat.h>
70058+#include <linux/grsecurity.h>
70059+#include <linux/grinternal.h>
70060+#include <linux/gracl.h>
70061+
70062+umode_t
70063+gr_acl_umask(void)
70064+{
70065+ if (unlikely(!gr_acl_is_enabled()))
70066+ return 0;
70067+
70068+ return current->role->umask;
70069+}
70070+
70071+__u32
70072+gr_acl_handle_hidden_file(const struct dentry * dentry,
70073+ const struct vfsmount * mnt)
70074+{
70075+ __u32 mode;
70076+
70077+ if (unlikely(d_is_negative(dentry)))
70078+ return GR_FIND;
70079+
70080+ mode =
70081+ gr_search_file(dentry, GR_FIND | GR_AUDIT_FIND | GR_SUPPRESS, mnt);
70082+
70083+ if (unlikely(mode & GR_FIND && mode & GR_AUDIT_FIND)) {
70084+ gr_log_fs_rbac_generic(GR_DO_AUDIT, GR_HIDDEN_ACL_MSG, dentry, mnt);
70085+ return mode;
70086+ } else if (unlikely(!(mode & GR_FIND) && !(mode & GR_SUPPRESS))) {
70087+ gr_log_fs_rbac_generic(GR_DONT_AUDIT, GR_HIDDEN_ACL_MSG, dentry, mnt);
70088+ return 0;
70089+ } else if (unlikely(!(mode & GR_FIND)))
70090+ return 0;
70091+
70092+ return GR_FIND;
70093+}
70094+
70095+__u32
70096+gr_acl_handle_open(const struct dentry * dentry, const struct vfsmount * mnt,
70097+ int acc_mode)
70098+{
70099+ __u32 reqmode = GR_FIND;
70100+ __u32 mode;
70101+
70102+ if (unlikely(d_is_negative(dentry)))
70103+ return reqmode;
70104+
70105+ if (acc_mode & MAY_APPEND)
70106+ reqmode |= GR_APPEND;
70107+ else if (acc_mode & MAY_WRITE)
70108+ reqmode |= GR_WRITE;
70109+ if ((acc_mode & MAY_READ) && !S_ISDIR(dentry->d_inode->i_mode))
70110+ reqmode |= GR_READ;
70111+
70112+ mode =
70113+ gr_search_file(dentry, reqmode | to_gr_audit(reqmode) | GR_SUPPRESS,
70114+ mnt);
70115+
70116+ if (unlikely(((mode & reqmode) == reqmode) && mode & GR_AUDITS)) {
70117+ gr_log_fs_rbac_mode2(GR_DO_AUDIT, GR_OPEN_ACL_MSG, dentry, mnt,
70118+ reqmode & GR_READ ? " reading" : "",
70119+ reqmode & GR_WRITE ? " writing" : reqmode &
70120+ GR_APPEND ? " appending" : "");
70121+ return reqmode;
70122+ } else
70123+ if (unlikely((mode & reqmode) != reqmode && !(mode & GR_SUPPRESS)))
70124+ {
70125+ gr_log_fs_rbac_mode2(GR_DONT_AUDIT, GR_OPEN_ACL_MSG, dentry, mnt,
70126+ reqmode & GR_READ ? " reading" : "",
70127+ reqmode & GR_WRITE ? " writing" : reqmode &
70128+ GR_APPEND ? " appending" : "");
70129+ return 0;
70130+ } else if (unlikely((mode & reqmode) != reqmode))
70131+ return 0;
70132+
70133+ return reqmode;
70134+}
70135+
70136+__u32
70137+gr_acl_handle_creat(const struct dentry * dentry,
70138+ const struct dentry * p_dentry,
70139+ const struct vfsmount * p_mnt, int open_flags, int acc_mode,
70140+ const int imode)
70141+{
70142+ __u32 reqmode = GR_WRITE | GR_CREATE;
70143+ __u32 mode;
70144+
70145+ if (acc_mode & MAY_APPEND)
70146+ reqmode |= GR_APPEND;
70147+ // if a directory was required or the directory already exists, then
70148+ // don't count this open as a read
70149+ if ((acc_mode & MAY_READ) &&
70150+ !((open_flags & O_DIRECTORY) || (dentry->d_inode && S_ISDIR(dentry->d_inode->i_mode))))
70151+ reqmode |= GR_READ;
70152+ if ((open_flags & O_CREAT) &&
70153+ ((imode & S_ISUID) || ((imode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP))))
70154+ reqmode |= GR_SETID;
70155+
70156+ mode =
70157+ gr_check_create(dentry, p_dentry, p_mnt,
70158+ reqmode | to_gr_audit(reqmode) | GR_SUPPRESS);
70159+
70160+ if (unlikely(((mode & reqmode) == reqmode) && mode & GR_AUDITS)) {
70161+ gr_log_fs_rbac_mode2(GR_DO_AUDIT, GR_CREATE_ACL_MSG, dentry, p_mnt,
70162+ reqmode & GR_READ ? " reading" : "",
70163+ reqmode & GR_WRITE ? " writing" : reqmode &
70164+ GR_APPEND ? " appending" : "");
70165+ return reqmode;
70166+ } else
70167+ if (unlikely((mode & reqmode) != reqmode && !(mode & GR_SUPPRESS)))
70168+ {
70169+ gr_log_fs_rbac_mode2(GR_DONT_AUDIT, GR_CREATE_ACL_MSG, dentry, p_mnt,
70170+ reqmode & GR_READ ? " reading" : "",
70171+ reqmode & GR_WRITE ? " writing" : reqmode &
70172+ GR_APPEND ? " appending" : "");
70173+ return 0;
70174+ } else if (unlikely((mode & reqmode) != reqmode))
70175+ return 0;
70176+
70177+ return reqmode;
70178+}
70179+
70180+__u32
70181+gr_acl_handle_access(const struct dentry * dentry, const struct vfsmount * mnt,
70182+ const int fmode)
70183+{
70184+ __u32 mode, reqmode = GR_FIND;
70185+
70186+ if ((fmode & S_IXOTH) && !S_ISDIR(dentry->d_inode->i_mode))
70187+ reqmode |= GR_EXEC;
70188+ if (fmode & S_IWOTH)
70189+ reqmode |= GR_WRITE;
70190+ if (fmode & S_IROTH)
70191+ reqmode |= GR_READ;
70192+
70193+ mode =
70194+ gr_search_file(dentry, reqmode | to_gr_audit(reqmode) | GR_SUPPRESS,
70195+ mnt);
70196+
70197+ if (unlikely(((mode & reqmode) == reqmode) && mode & GR_AUDITS)) {
70198+ gr_log_fs_rbac_mode3(GR_DO_AUDIT, GR_ACCESS_ACL_MSG, dentry, mnt,
70199+ reqmode & GR_READ ? " reading" : "",
70200+ reqmode & GR_WRITE ? " writing" : "",
70201+ reqmode & GR_EXEC ? " executing" : "");
70202+ return reqmode;
70203+ } else
70204+ if (unlikely((mode & reqmode) != reqmode && !(mode & GR_SUPPRESS)))
70205+ {
70206+ gr_log_fs_rbac_mode3(GR_DONT_AUDIT, GR_ACCESS_ACL_MSG, dentry, mnt,
70207+ reqmode & GR_READ ? " reading" : "",
70208+ reqmode & GR_WRITE ? " writing" : "",
70209+ reqmode & GR_EXEC ? " executing" : "");
70210+ return 0;
70211+ } else if (unlikely((mode & reqmode) != reqmode))
70212+ return 0;
70213+
70214+ return reqmode;
70215+}
70216+
70217+static __u32 generic_fs_handler(const struct dentry *dentry, const struct vfsmount *mnt, __u32 reqmode, const char *fmt)
70218+{
70219+ __u32 mode;
70220+
70221+ mode = gr_search_file(dentry, reqmode | to_gr_audit(reqmode) | GR_SUPPRESS, mnt);
70222+
70223+ if (unlikely(((mode & (reqmode)) == (reqmode)) && mode & GR_AUDITS)) {
70224+ gr_log_fs_rbac_generic(GR_DO_AUDIT, fmt, dentry, mnt);
70225+ return mode;
70226+ } else if (unlikely((mode & (reqmode)) != (reqmode) && !(mode & GR_SUPPRESS))) {
70227+ gr_log_fs_rbac_generic(GR_DONT_AUDIT, fmt, dentry, mnt);
70228+ return 0;
70229+ } else if (unlikely((mode & (reqmode)) != (reqmode)))
70230+ return 0;
70231+
70232+ return (reqmode);
70233+}
70234+
70235+__u32
70236+gr_acl_handle_rmdir(const struct dentry * dentry, const struct vfsmount * mnt)
70237+{
70238+ return generic_fs_handler(dentry, mnt, GR_WRITE | GR_DELETE , GR_RMDIR_ACL_MSG);
70239+}
70240+
70241+__u32
70242+gr_acl_handle_unlink(const struct dentry *dentry, const struct vfsmount *mnt)
70243+{
70244+ return generic_fs_handler(dentry, mnt, GR_WRITE | GR_DELETE , GR_UNLINK_ACL_MSG);
70245+}
70246+
70247+__u32
70248+gr_acl_handle_truncate(const struct dentry *dentry, const struct vfsmount *mnt)
70249+{
70250+ return generic_fs_handler(dentry, mnt, GR_WRITE, GR_TRUNCATE_ACL_MSG);
70251+}
70252+
70253+__u32
70254+gr_acl_handle_utime(const struct dentry *dentry, const struct vfsmount *mnt)
70255+{
70256+ return generic_fs_handler(dentry, mnt, GR_WRITE, GR_ATIME_ACL_MSG);
70257+}
70258+
70259+__u32
70260+gr_acl_handle_chmod(const struct dentry *dentry, const struct vfsmount *mnt,
70261+ umode_t *modeptr)
70262+{
70263+ umode_t mode;
70264+
70265+ *modeptr &= ~gr_acl_umask();
70266+ mode = *modeptr;
70267+
70268+ if (unlikely(dentry->d_inode && S_ISSOCK(dentry->d_inode->i_mode)))
70269+ return 1;
70270+
70271+ if (unlikely(dentry->d_inode && !S_ISDIR(dentry->d_inode->i_mode) &&
70272+ ((mode & S_ISUID) || ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP))))) {
70273+ return generic_fs_handler(dentry, mnt, GR_WRITE | GR_SETID,
70274+ GR_CHMOD_ACL_MSG);
70275+ } else {
70276+ return generic_fs_handler(dentry, mnt, GR_WRITE, GR_CHMOD_ACL_MSG);
70277+ }
70278+}
70279+
70280+__u32
70281+gr_acl_handle_chown(const struct dentry *dentry, const struct vfsmount *mnt)
70282+{
70283+ return generic_fs_handler(dentry, mnt, GR_WRITE, GR_CHOWN_ACL_MSG);
70284+}
70285+
70286+__u32
70287+gr_acl_handle_setxattr(const struct dentry *dentry, const struct vfsmount *mnt)
70288+{
70289+ return generic_fs_handler(dentry, mnt, GR_WRITE, GR_SETXATTR_ACL_MSG);
70290+}
70291+
70292+__u32
70293+gr_acl_handle_removexattr(const struct dentry *dentry, const struct vfsmount *mnt)
70294+{
70295+ return generic_fs_handler(dentry, mnt, GR_WRITE, GR_REMOVEXATTR_ACL_MSG);
70296+}
70297+
70298+__u32
70299+gr_acl_handle_execve(const struct dentry *dentry, const struct vfsmount *mnt)
70300+{
70301+ return generic_fs_handler(dentry, mnt, GR_EXEC, GR_EXEC_ACL_MSG);
70302+}
70303+
70304+__u32
70305+gr_acl_handle_unix(const struct dentry *dentry, const struct vfsmount *mnt)
70306+{
70307+ return generic_fs_handler(dentry, mnt, GR_READ | GR_WRITE,
70308+ GR_UNIXCONNECT_ACL_MSG);
70309+}
70310+
70311+/* hardlinks require at minimum create and link permission,
70312+ any additional privilege required is based on the
70313+ privilege of the file being linked to
70314+*/
70315+__u32
70316+gr_acl_handle_link(const struct dentry * new_dentry,
70317+ const struct dentry * parent_dentry,
70318+ const struct vfsmount * parent_mnt,
70319+ const struct dentry * old_dentry,
70320+ const struct vfsmount * old_mnt, const struct filename *to)
70321+{
70322+ __u32 mode;
70323+ __u32 needmode = GR_CREATE | GR_LINK;
70324+ __u32 needaudit = GR_AUDIT_CREATE | GR_AUDIT_LINK;
70325+
70326+ mode =
70327+ gr_check_link(new_dentry, parent_dentry, parent_mnt, old_dentry,
70328+ old_mnt);
70329+
70330+ if (unlikely(((mode & needmode) == needmode) && (mode & needaudit))) {
70331+ gr_log_fs_rbac_str(GR_DO_AUDIT, GR_LINK_ACL_MSG, old_dentry, old_mnt, to->name);
70332+ return mode;
70333+ } else if (unlikely(((mode & needmode) != needmode) && !(mode & GR_SUPPRESS))) {
70334+ gr_log_fs_rbac_str(GR_DONT_AUDIT, GR_LINK_ACL_MSG, old_dentry, old_mnt, to->name);
70335+ return 0;
70336+ } else if (unlikely((mode & needmode) != needmode))
70337+ return 0;
70338+
70339+ return 1;
70340+}
70341+
70342+__u32
70343+gr_acl_handle_symlink(const struct dentry * new_dentry,
70344+ const struct dentry * parent_dentry,
70345+ const struct vfsmount * parent_mnt, const struct filename *from)
70346+{
70347+ __u32 needmode = GR_WRITE | GR_CREATE;
70348+ __u32 mode;
70349+
70350+ mode =
70351+ gr_check_create(new_dentry, parent_dentry, parent_mnt,
70352+ GR_CREATE | GR_AUDIT_CREATE |
70353+ GR_WRITE | GR_AUDIT_WRITE | GR_SUPPRESS);
70354+
70355+ if (unlikely(mode & GR_WRITE && mode & GR_AUDITS)) {
70356+ gr_log_fs_str_rbac(GR_DO_AUDIT, GR_SYMLINK_ACL_MSG, from->name, new_dentry, parent_mnt);
70357+ return mode;
70358+ } else if (unlikely(((mode & needmode) != needmode) && !(mode & GR_SUPPRESS))) {
70359+ gr_log_fs_str_rbac(GR_DONT_AUDIT, GR_SYMLINK_ACL_MSG, from->name, new_dentry, parent_mnt);
70360+ return 0;
70361+ } else if (unlikely((mode & needmode) != needmode))
70362+ return 0;
70363+
70364+ return (GR_WRITE | GR_CREATE);
70365+}
70366+
70367+static __u32 generic_fs_create_handler(const struct dentry *new_dentry, const struct dentry *parent_dentry, const struct vfsmount *parent_mnt, __u32 reqmode, const char *fmt)
70368+{
70369+ __u32 mode;
70370+
70371+ mode = gr_check_create(new_dentry, parent_dentry, parent_mnt, reqmode | to_gr_audit(reqmode) | GR_SUPPRESS);
70372+
70373+ if (unlikely(((mode & (reqmode)) == (reqmode)) && mode & GR_AUDITS)) {
70374+ gr_log_fs_rbac_generic(GR_DO_AUDIT, fmt, new_dentry, parent_mnt);
70375+ return mode;
70376+ } else if (unlikely((mode & (reqmode)) != (reqmode) && !(mode & GR_SUPPRESS))) {
70377+ gr_log_fs_rbac_generic(GR_DONT_AUDIT, fmt, new_dentry, parent_mnt);
70378+ return 0;
70379+ } else if (unlikely((mode & (reqmode)) != (reqmode)))
70380+ return 0;
70381+
70382+ return (reqmode);
70383+}
70384+
70385+__u32
70386+gr_acl_handle_mknod(const struct dentry * new_dentry,
70387+ const struct dentry * parent_dentry,
70388+ const struct vfsmount * parent_mnt,
70389+ const int mode)
70390+{
70391+ __u32 reqmode = GR_WRITE | GR_CREATE;
70392+ if (unlikely((mode & S_ISUID) || ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP))))
70393+ reqmode |= GR_SETID;
70394+
70395+ return generic_fs_create_handler(new_dentry, parent_dentry, parent_mnt,
70396+ reqmode, GR_MKNOD_ACL_MSG);
70397+}
70398+
70399+__u32
70400+gr_acl_handle_mkdir(const struct dentry *new_dentry,
70401+ const struct dentry *parent_dentry,
70402+ const struct vfsmount *parent_mnt)
70403+{
70404+ return generic_fs_create_handler(new_dentry, parent_dentry, parent_mnt,
70405+ GR_WRITE | GR_CREATE, GR_MKDIR_ACL_MSG);
70406+}
70407+
70408+#define RENAME_CHECK_SUCCESS(old, new) \
70409+ (((old & (GR_WRITE | GR_READ)) == (GR_WRITE | GR_READ)) && \
70410+ ((new & (GR_WRITE | GR_READ)) == (GR_WRITE | GR_READ)))
70411+
70412+int
70413+gr_acl_handle_rename(struct dentry *new_dentry,
70414+ struct dentry *parent_dentry,
70415+ const struct vfsmount *parent_mnt,
70416+ struct dentry *old_dentry,
70417+ struct inode *old_parent_inode,
70418+ struct vfsmount *old_mnt, const struct filename *newname, unsigned int flags)
70419+{
70420+ __u32 comp1, comp2;
70421+ int error = 0;
70422+
70423+ if (unlikely(!gr_acl_is_enabled()))
70424+ return 0;
70425+
70426+ if (flags & RENAME_EXCHANGE) {
70427+ comp1 = gr_search_file(new_dentry, GR_READ | GR_WRITE |
70428+ GR_AUDIT_READ | GR_AUDIT_WRITE |
70429+ GR_SUPPRESS, parent_mnt);
70430+ comp2 =
70431+ gr_search_file(old_dentry,
70432+ GR_READ | GR_WRITE | GR_AUDIT_READ |
70433+ GR_AUDIT_WRITE | GR_SUPPRESS, old_mnt);
70434+ } else if (d_is_negative(new_dentry)) {
70435+ comp1 = gr_check_create(new_dentry, parent_dentry, parent_mnt,
70436+ GR_READ | GR_WRITE | GR_CREATE | GR_AUDIT_READ |
70437+ GR_AUDIT_WRITE | GR_AUDIT_CREATE | GR_SUPPRESS);
70438+ comp2 = gr_search_file(old_dentry, GR_READ | GR_WRITE |
70439+ GR_DELETE | GR_AUDIT_DELETE |
70440+ GR_AUDIT_READ | GR_AUDIT_WRITE |
70441+ GR_SUPPRESS, old_mnt);
70442+ } else {
70443+ comp1 = gr_search_file(new_dentry, GR_READ | GR_WRITE |
70444+ GR_CREATE | GR_DELETE |
70445+ GR_AUDIT_CREATE | GR_AUDIT_DELETE |
70446+ GR_AUDIT_READ | GR_AUDIT_WRITE |
70447+ GR_SUPPRESS, parent_mnt);
70448+ comp2 =
70449+ gr_search_file(old_dentry,
70450+ GR_READ | GR_WRITE | GR_AUDIT_READ |
70451+ GR_DELETE | GR_AUDIT_DELETE |
70452+ GR_AUDIT_WRITE | GR_SUPPRESS, old_mnt);
70453+ }
70454+
70455+ if (RENAME_CHECK_SUCCESS(comp1, comp2) &&
70456+ ((comp1 & GR_AUDITS) || (comp2 & GR_AUDITS)))
70457+ gr_log_fs_rbac_str(GR_DO_AUDIT, GR_RENAME_ACL_MSG, old_dentry, old_mnt, newname->name);
70458+ else if (!RENAME_CHECK_SUCCESS(comp1, comp2) && !(comp1 & GR_SUPPRESS)
70459+ && !(comp2 & GR_SUPPRESS)) {
70460+ gr_log_fs_rbac_str(GR_DONT_AUDIT, GR_RENAME_ACL_MSG, old_dentry, old_mnt, newname->name);
70461+ error = -EACCES;
70462+ } else if (unlikely(!RENAME_CHECK_SUCCESS(comp1, comp2)))
70463+ error = -EACCES;
70464+
70465+ return error;
70466+}
70467+
70468+void
70469+gr_acl_handle_exit(void)
70470+{
70471+ u16 id;
70472+ char *rolename;
70473+
70474+ if (unlikely(current->acl_sp_role && gr_acl_is_enabled() &&
70475+ !(current->role->roletype & GR_ROLE_PERSIST))) {
70476+ id = current->acl_role_id;
70477+ rolename = current->role->rolename;
70478+ gr_set_acls(1);
70479+ gr_log_str_int(GR_DONT_AUDIT_GOOD, GR_SPROLEL_ACL_MSG, rolename, id);
70480+ }
70481+
70482+ gr_put_exec_file(current);
70483+ return;
70484+}
70485+
70486+int
70487+gr_acl_handle_procpidmem(const struct task_struct *task)
70488+{
70489+ if (unlikely(!gr_acl_is_enabled()))
70490+ return 0;
70491+
70492+ if (task != current && task->acl->mode & GR_PROTPROCFD)
70493+ return -EACCES;
70494+
70495+ return 0;
70496+}
70497diff --git a/grsecurity/gracl_ip.c b/grsecurity/gracl_ip.c
70498new file mode 100644
70499index 0000000..f056b81
70500--- /dev/null
70501+++ b/grsecurity/gracl_ip.c
70502@@ -0,0 +1,386 @@
70503+#include <linux/kernel.h>
70504+#include <asm/uaccess.h>
70505+#include <asm/errno.h>
70506+#include <net/sock.h>
70507+#include <linux/file.h>
70508+#include <linux/fs.h>
70509+#include <linux/net.h>
70510+#include <linux/in.h>
70511+#include <linux/skbuff.h>
70512+#include <linux/ip.h>
70513+#include <linux/udp.h>
70514+#include <linux/types.h>
70515+#include <linux/sched.h>
70516+#include <linux/netdevice.h>
70517+#include <linux/inetdevice.h>
70518+#include <linux/gracl.h>
70519+#include <linux/grsecurity.h>
70520+#include <linux/grinternal.h>
70521+
70522+#define GR_BIND 0x01
70523+#define GR_CONNECT 0x02
70524+#define GR_INVERT 0x04
70525+#define GR_BINDOVERRIDE 0x08
70526+#define GR_CONNECTOVERRIDE 0x10
70527+#define GR_SOCK_FAMILY 0x20
70528+
70529+static const char * gr_protocols[IPPROTO_MAX] = {
70530+ "ip", "icmp", "igmp", "ggp", "ipencap", "st", "tcp", "cbt",
70531+ "egp", "igp", "bbn-rcc", "nvp", "pup", "argus", "emcon", "xnet",
70532+ "chaos", "udp", "mux", "dcn", "hmp", "prm", "xns-idp", "trunk-1",
70533+ "trunk-2", "leaf-1", "leaf-2", "rdp", "irtp", "iso-tp4", "netblt", "mfe-nsp",
70534+ "merit-inp", "sep", "3pc", "idpr", "xtp", "ddp", "idpr-cmtp", "tp++",
70535+ "il", "ipv6", "sdrp", "ipv6-route", "ipv6-frag", "idrp", "rsvp", "gre",
70536+ "mhrp", "bna", "ipv6-crypt", "ipv6-auth", "i-nlsp", "swipe", "narp", "mobile",
70537+ "tlsp", "skip", "ipv6-icmp", "ipv6-nonxt", "ipv6-opts", "unknown:61", "cftp", "unknown:63",
70538+ "sat-expak", "kryptolan", "rvd", "ippc", "unknown:68", "sat-mon", "visa", "ipcv",
70539+ "cpnx", "cphb", "wsn", "pvp", "br-sat-mon", "sun-nd", "wb-mon", "wb-expak",
70540+ "iso-ip", "vmtp", "secure-vmtp", "vines", "ttp", "nfsnet-igp", "dgp", "tcf",
70541+ "eigrp", "ospf", "sprite-rpc", "larp", "mtp", "ax.25", "ipip", "micp",
70542+ "scc-sp", "etherip", "encap", "unknown:99", "gmtp", "ifmp", "pnni", "pim",
70543+ "aris", "scps", "qnx", "a/n", "ipcomp", "snp", "compaq-peer", "ipx-in-ip",
70544+ "vrrp", "pgm", "unknown:114", "l2tp", "ddx", "iatp", "stp", "srp",
70545+ "uti", "smp", "sm", "ptp", "isis", "fire", "crtp", "crdup",
70546+ "sscopmce", "iplt", "sps", "pipe", "sctp", "fc", "unkown:134", "unknown:135",
70547+ "unknown:136", "unknown:137", "unknown:138", "unknown:139", "unknown:140", "unknown:141", "unknown:142", "unknown:143",
70548+ "unknown:144", "unknown:145", "unknown:146", "unknown:147", "unknown:148", "unknown:149", "unknown:150", "unknown:151",
70549+ "unknown:152", "unknown:153", "unknown:154", "unknown:155", "unknown:156", "unknown:157", "unknown:158", "unknown:159",
70550+ "unknown:160", "unknown:161", "unknown:162", "unknown:163", "unknown:164", "unknown:165", "unknown:166", "unknown:167",
70551+ "unknown:168", "unknown:169", "unknown:170", "unknown:171", "unknown:172", "unknown:173", "unknown:174", "unknown:175",
70552+ "unknown:176", "unknown:177", "unknown:178", "unknown:179", "unknown:180", "unknown:181", "unknown:182", "unknown:183",
70553+ "unknown:184", "unknown:185", "unknown:186", "unknown:187", "unknown:188", "unknown:189", "unknown:190", "unknown:191",
70554+ "unknown:192", "unknown:193", "unknown:194", "unknown:195", "unknown:196", "unknown:197", "unknown:198", "unknown:199",
70555+ "unknown:200", "unknown:201", "unknown:202", "unknown:203", "unknown:204", "unknown:205", "unknown:206", "unknown:207",
70556+ "unknown:208", "unknown:209", "unknown:210", "unknown:211", "unknown:212", "unknown:213", "unknown:214", "unknown:215",
70557+ "unknown:216", "unknown:217", "unknown:218", "unknown:219", "unknown:220", "unknown:221", "unknown:222", "unknown:223",
70558+ "unknown:224", "unknown:225", "unknown:226", "unknown:227", "unknown:228", "unknown:229", "unknown:230", "unknown:231",
70559+ "unknown:232", "unknown:233", "unknown:234", "unknown:235", "unknown:236", "unknown:237", "unknown:238", "unknown:239",
70560+ "unknown:240", "unknown:241", "unknown:242", "unknown:243", "unknown:244", "unknown:245", "unknown:246", "unknown:247",
70561+ "unknown:248", "unknown:249", "unknown:250", "unknown:251", "unknown:252", "unknown:253", "unknown:254", "unknown:255",
70562+ };
70563+
70564+static const char * gr_socktypes[SOCK_MAX] = {
70565+ "unknown:0", "stream", "dgram", "raw", "rdm", "seqpacket", "unknown:6",
70566+ "unknown:7", "unknown:8", "unknown:9", "packet"
70567+ };
70568+
70569+static const char * gr_sockfamilies[AF_MAX+1] = {
70570+ "unspec", "unix", "inet", "ax25", "ipx", "appletalk", "netrom", "bridge", "atmpvc", "x25",
70571+ "inet6", "rose", "decnet", "netbeui", "security", "key", "netlink", "packet", "ash",
70572+ "econet", "atmsvc", "rds", "sna", "irda", "ppox", "wanpipe", "llc", "fam_27", "fam_28",
70573+ "tipc", "bluetooth", "iucv", "rxrpc", "isdn", "phonet", "ieee802154", "ciaf"
70574+ };
70575+
70576+const char *
70577+gr_proto_to_name(unsigned char proto)
70578+{
70579+ return gr_protocols[proto];
70580+}
70581+
70582+const char *
70583+gr_socktype_to_name(unsigned char type)
70584+{
70585+ return gr_socktypes[type];
70586+}
70587+
70588+const char *
70589+gr_sockfamily_to_name(unsigned char family)
70590+{
70591+ return gr_sockfamilies[family];
70592+}
70593+
70594+extern const struct net_proto_family __rcu *net_families[NPROTO] __read_mostly;
70595+
70596+int
70597+gr_search_socket(const int domain, const int type, const int protocol)
70598+{
70599+ struct acl_subject_label *curr;
70600+ const struct cred *cred = current_cred();
70601+
70602+ if (unlikely(!gr_acl_is_enabled()))
70603+ goto exit;
70604+
70605+ if ((domain < 0) || (type < 0) || (protocol < 0) ||
70606+ (domain >= AF_MAX) || (type >= SOCK_MAX) || (protocol >= IPPROTO_MAX))
70607+ goto exit; // let the kernel handle it
70608+
70609+ curr = current->acl;
70610+
70611+ if (curr->sock_families[domain / 32] & (1U << (domain % 32))) {
70612+ /* the family is allowed, if this is PF_INET allow it only if
70613+ the extra sock type/protocol checks pass */
70614+ if (domain == PF_INET)
70615+ goto inet_check;
70616+ goto exit;
70617+ } else {
70618+ if (curr->mode & (GR_LEARN | GR_INHERITLEARN)) {
70619+ __u32 fakeip = 0;
70620+ security_learn(GR_IP_LEARN_MSG, current->role->rolename,
70621+ current->role->roletype, GR_GLOBAL_UID(cred->uid),
70622+ GR_GLOBAL_GID(cred->gid), current->exec_file ?
70623+ gr_to_filename(current->exec_file->f_path.dentry,
70624+ current->exec_file->f_path.mnt) :
70625+ curr->filename, curr->filename,
70626+ &fakeip, domain, 0, 0, GR_SOCK_FAMILY,
70627+ &current->signal->saved_ip);
70628+ goto exit;
70629+ }
70630+ goto exit_fail;
70631+ }
70632+
70633+inet_check:
70634+ /* the rest of this checking is for IPv4 only */
70635+ if (!curr->ips)
70636+ goto exit;
70637+
70638+ if ((curr->ip_type & (1U << type)) &&
70639+ (curr->ip_proto[protocol / 32] & (1U << (protocol % 32))))
70640+ goto exit;
70641+
70642+ if (curr->mode & (GR_LEARN | GR_INHERITLEARN)) {
70643+ /* we don't place acls on raw sockets , and sometimes
70644+ dgram/ip sockets are opened for ioctl and not
70645+ bind/connect, so we'll fake a bind learn log */
70646+ if (type == SOCK_RAW || type == SOCK_PACKET) {
70647+ __u32 fakeip = 0;
70648+ security_learn(GR_IP_LEARN_MSG, current->role->rolename,
70649+ current->role->roletype, GR_GLOBAL_UID(cred->uid),
70650+ GR_GLOBAL_GID(cred->gid), current->exec_file ?
70651+ gr_to_filename(current->exec_file->f_path.dentry,
70652+ current->exec_file->f_path.mnt) :
70653+ curr->filename, curr->filename,
70654+ &fakeip, 0, type,
70655+ protocol, GR_CONNECT, &current->signal->saved_ip);
70656+ } else if ((type == SOCK_DGRAM) && (protocol == IPPROTO_IP)) {
70657+ __u32 fakeip = 0;
70658+ security_learn(GR_IP_LEARN_MSG, current->role->rolename,
70659+ current->role->roletype, GR_GLOBAL_UID(cred->uid),
70660+ GR_GLOBAL_GID(cred->gid), current->exec_file ?
70661+ gr_to_filename(current->exec_file->f_path.dentry,
70662+ current->exec_file->f_path.mnt) :
70663+ curr->filename, curr->filename,
70664+ &fakeip, 0, type,
70665+ protocol, GR_BIND, &current->signal->saved_ip);
70666+ }
70667+ /* we'll log when they use connect or bind */
70668+ goto exit;
70669+ }
70670+
70671+exit_fail:
70672+ if (domain == PF_INET)
70673+ gr_log_str3(GR_DONT_AUDIT, GR_SOCK_MSG, gr_sockfamily_to_name(domain),
70674+ gr_socktype_to_name(type), gr_proto_to_name(protocol));
70675+ else if (rcu_access_pointer(net_families[domain]) != NULL)
70676+ gr_log_str2_int(GR_DONT_AUDIT, GR_SOCK_NOINET_MSG, gr_sockfamily_to_name(domain),
70677+ gr_socktype_to_name(type), protocol);
70678+
70679+ return 0;
70680+exit:
70681+ return 1;
70682+}
70683+
70684+int check_ip_policy(struct acl_ip_label *ip, __u32 ip_addr, __u16 ip_port, __u8 protocol, const int mode, const int type, __u32 our_addr, __u32 our_netmask)
70685+{
70686+ if ((ip->mode & mode) &&
70687+ (ip_port >= ip->low) &&
70688+ (ip_port <= ip->high) &&
70689+ ((ntohl(ip_addr) & our_netmask) ==
70690+ (ntohl(our_addr) & our_netmask))
70691+ && (ip->proto[protocol / 32] & (1U << (protocol % 32)))
70692+ && (ip->type & (1U << type))) {
70693+ if (ip->mode & GR_INVERT)
70694+ return 2; // specifically denied
70695+ else
70696+ return 1; // allowed
70697+ }
70698+
70699+ return 0; // not specifically allowed, may continue parsing
70700+}
70701+
70702+static int
70703+gr_search_connectbind(const int full_mode, struct sock *sk,
70704+ struct sockaddr_in *addr, const int type)
70705+{
70706+ char iface[IFNAMSIZ] = {0};
70707+ struct acl_subject_label *curr;
70708+ struct acl_ip_label *ip;
70709+ struct inet_sock *isk;
70710+ struct net_device *dev;
70711+ struct in_device *idev;
70712+ unsigned long i;
70713+ int ret;
70714+ int mode = full_mode & (GR_BIND | GR_CONNECT);
70715+ __u32 ip_addr = 0;
70716+ __u32 our_addr;
70717+ __u32 our_netmask;
70718+ char *p;
70719+ __u16 ip_port = 0;
70720+ const struct cred *cred = current_cred();
70721+
70722+ if (unlikely(!gr_acl_is_enabled() || sk->sk_family != PF_INET))
70723+ return 0;
70724+
70725+ curr = current->acl;
70726+ isk = inet_sk(sk);
70727+
70728+ /* INADDR_ANY overriding for binds, inaddr_any_override is already in network order */
70729+ if ((full_mode & GR_BINDOVERRIDE) && addr->sin_addr.s_addr == htonl(INADDR_ANY) && curr->inaddr_any_override != 0)
70730+ addr->sin_addr.s_addr = curr->inaddr_any_override;
70731+ if ((full_mode & GR_CONNECT) && isk->inet_saddr == htonl(INADDR_ANY) && curr->inaddr_any_override != 0) {
70732+ struct sockaddr_in saddr;
70733+ int err;
70734+
70735+ saddr.sin_family = AF_INET;
70736+ saddr.sin_addr.s_addr = curr->inaddr_any_override;
70737+ saddr.sin_port = isk->inet_sport;
70738+
70739+ err = security_socket_bind(sk->sk_socket, (struct sockaddr *)&saddr, sizeof(struct sockaddr_in));
70740+ if (err)
70741+ return err;
70742+
70743+ err = sk->sk_socket->ops->bind(sk->sk_socket, (struct sockaddr *)&saddr, sizeof(struct sockaddr_in));
70744+ if (err)
70745+ return err;
70746+ }
70747+
70748+ if (!curr->ips)
70749+ return 0;
70750+
70751+ ip_addr = addr->sin_addr.s_addr;
70752+ ip_port = ntohs(addr->sin_port);
70753+
70754+ if (curr->mode & (GR_LEARN | GR_INHERITLEARN)) {
70755+ security_learn(GR_IP_LEARN_MSG, current->role->rolename,
70756+ current->role->roletype, GR_GLOBAL_UID(cred->uid),
70757+ GR_GLOBAL_GID(cred->gid), current->exec_file ?
70758+ gr_to_filename(current->exec_file->f_path.dentry,
70759+ current->exec_file->f_path.mnt) :
70760+ curr->filename, curr->filename,
70761+ &ip_addr, ip_port, type,
70762+ sk->sk_protocol, mode, &current->signal->saved_ip);
70763+ return 0;
70764+ }
70765+
70766+ for (i = 0; i < curr->ip_num; i++) {
70767+ ip = *(curr->ips + i);
70768+ if (ip->iface != NULL) {
70769+ strncpy(iface, ip->iface, IFNAMSIZ - 1);
70770+ p = strchr(iface, ':');
70771+ if (p != NULL)
70772+ *p = '\0';
70773+ dev = dev_get_by_name(sock_net(sk), iface);
70774+ if (dev == NULL)
70775+ continue;
70776+ idev = in_dev_get(dev);
70777+ if (idev == NULL) {
70778+ dev_put(dev);
70779+ continue;
70780+ }
70781+ rcu_read_lock();
70782+ for_ifa(idev) {
70783+ if (!strcmp(ip->iface, ifa->ifa_label)) {
70784+ our_addr = ifa->ifa_address;
70785+ our_netmask = 0xffffffff;
70786+ ret = check_ip_policy(ip, ip_addr, ip_port, sk->sk_protocol, mode, type, our_addr, our_netmask);
70787+ if (ret == 1) {
70788+ rcu_read_unlock();
70789+ in_dev_put(idev);
70790+ dev_put(dev);
70791+ return 0;
70792+ } else if (ret == 2) {
70793+ rcu_read_unlock();
70794+ in_dev_put(idev);
70795+ dev_put(dev);
70796+ goto denied;
70797+ }
70798+ }
70799+ } endfor_ifa(idev);
70800+ rcu_read_unlock();
70801+ in_dev_put(idev);
70802+ dev_put(dev);
70803+ } else {
70804+ our_addr = ip->addr;
70805+ our_netmask = ip->netmask;
70806+ ret = check_ip_policy(ip, ip_addr, ip_port, sk->sk_protocol, mode, type, our_addr, our_netmask);
70807+ if (ret == 1)
70808+ return 0;
70809+ else if (ret == 2)
70810+ goto denied;
70811+ }
70812+ }
70813+
70814+denied:
70815+ if (mode == GR_BIND)
70816+ gr_log_int5_str2(GR_DONT_AUDIT, GR_BIND_ACL_MSG, &ip_addr, ip_port, gr_socktype_to_name(type), gr_proto_to_name(sk->sk_protocol));
70817+ else if (mode == GR_CONNECT)
70818+ gr_log_int5_str2(GR_DONT_AUDIT, GR_CONNECT_ACL_MSG, &ip_addr, ip_port, gr_socktype_to_name(type), gr_proto_to_name(sk->sk_protocol));
70819+
70820+ return -EACCES;
70821+}
70822+
70823+int
70824+gr_search_connect(struct socket *sock, struct sockaddr_in *addr)
70825+{
70826+ /* always allow disconnection of dgram sockets with connect */
70827+ if (addr->sin_family == AF_UNSPEC)
70828+ return 0;
70829+ return gr_search_connectbind(GR_CONNECT | GR_CONNECTOVERRIDE, sock->sk, addr, sock->type);
70830+}
70831+
70832+int
70833+gr_search_bind(struct socket *sock, struct sockaddr_in *addr)
70834+{
70835+ return gr_search_connectbind(GR_BIND | GR_BINDOVERRIDE, sock->sk, addr, sock->type);
70836+}
70837+
70838+int gr_search_listen(struct socket *sock)
70839+{
70840+ struct sock *sk = sock->sk;
70841+ struct sockaddr_in addr;
70842+
70843+ addr.sin_addr.s_addr = inet_sk(sk)->inet_saddr;
70844+ addr.sin_port = inet_sk(sk)->inet_sport;
70845+
70846+ return gr_search_connectbind(GR_BIND | GR_CONNECTOVERRIDE, sock->sk, &addr, sock->type);
70847+}
70848+
70849+int gr_search_accept(struct socket *sock)
70850+{
70851+ struct sock *sk = sock->sk;
70852+ struct sockaddr_in addr;
70853+
70854+ addr.sin_addr.s_addr = inet_sk(sk)->inet_saddr;
70855+ addr.sin_port = inet_sk(sk)->inet_sport;
70856+
70857+ return gr_search_connectbind(GR_BIND | GR_CONNECTOVERRIDE, sock->sk, &addr, sock->type);
70858+}
70859+
70860+int
70861+gr_search_udp_sendmsg(struct sock *sk, struct sockaddr_in *addr)
70862+{
70863+ if (addr)
70864+ return gr_search_connectbind(GR_CONNECT, sk, addr, SOCK_DGRAM);
70865+ else {
70866+ struct sockaddr_in sin;
70867+ const struct inet_sock *inet = inet_sk(sk);
70868+
70869+ sin.sin_addr.s_addr = inet->inet_daddr;
70870+ sin.sin_port = inet->inet_dport;
70871+
70872+ return gr_search_connectbind(GR_CONNECT | GR_CONNECTOVERRIDE, sk, &sin, SOCK_DGRAM);
70873+ }
70874+}
70875+
70876+int
70877+gr_search_udp_recvmsg(struct sock *sk, const struct sk_buff *skb)
70878+{
70879+ struct sockaddr_in sin;
70880+
70881+ if (unlikely(skb->len < sizeof (struct udphdr)))
70882+ return 0; // skip this packet
70883+
70884+ sin.sin_addr.s_addr = ip_hdr(skb)->saddr;
70885+ sin.sin_port = udp_hdr(skb)->source;
70886+
70887+ return gr_search_connectbind(GR_CONNECT | GR_CONNECTOVERRIDE, sk, &sin, SOCK_DGRAM);
70888+}
70889diff --git a/grsecurity/gracl_learn.c b/grsecurity/gracl_learn.c
70890new file mode 100644
70891index 0000000..25f54ef
70892--- /dev/null
70893+++ b/grsecurity/gracl_learn.c
70894@@ -0,0 +1,207 @@
70895+#include <linux/kernel.h>
70896+#include <linux/mm.h>
70897+#include <linux/sched.h>
70898+#include <linux/poll.h>
70899+#include <linux/string.h>
70900+#include <linux/file.h>
70901+#include <linux/types.h>
70902+#include <linux/vmalloc.h>
70903+#include <linux/grinternal.h>
70904+
70905+extern ssize_t write_grsec_handler(struct file * file, const char __user * buf,
70906+ size_t count, loff_t *ppos);
70907+extern int gr_acl_is_enabled(void);
70908+
70909+static DECLARE_WAIT_QUEUE_HEAD(learn_wait);
70910+static int gr_learn_attached;
70911+
70912+/* use a 512k buffer */
70913+#define LEARN_BUFFER_SIZE (512 * 1024)
70914+
70915+static DEFINE_SPINLOCK(gr_learn_lock);
70916+static DEFINE_MUTEX(gr_learn_user_mutex);
70917+
70918+/* we need to maintain two buffers, so that the kernel context of grlearn
70919+ uses a semaphore around the userspace copying, and the other kernel contexts
70920+ use a spinlock when copying into the buffer, since they cannot sleep
70921+*/
70922+static char *learn_buffer;
70923+static char *learn_buffer_user;
70924+static int learn_buffer_len;
70925+static int learn_buffer_user_len;
70926+
70927+static ssize_t
70928+read_learn(struct file *file, char __user * buf, size_t count, loff_t * ppos)
70929+{
70930+ DECLARE_WAITQUEUE(wait, current);
70931+ ssize_t retval = 0;
70932+
70933+ add_wait_queue(&learn_wait, &wait);
70934+ set_current_state(TASK_INTERRUPTIBLE);
70935+ do {
70936+ mutex_lock(&gr_learn_user_mutex);
70937+ spin_lock(&gr_learn_lock);
70938+ if (learn_buffer_len)
70939+ break;
70940+ spin_unlock(&gr_learn_lock);
70941+ mutex_unlock(&gr_learn_user_mutex);
70942+ if (file->f_flags & O_NONBLOCK) {
70943+ retval = -EAGAIN;
70944+ goto out;
70945+ }
70946+ if (signal_pending(current)) {
70947+ retval = -ERESTARTSYS;
70948+ goto out;
70949+ }
70950+
70951+ schedule();
70952+ } while (1);
70953+
70954+ memcpy(learn_buffer_user, learn_buffer, learn_buffer_len);
70955+ learn_buffer_user_len = learn_buffer_len;
70956+ retval = learn_buffer_len;
70957+ learn_buffer_len = 0;
70958+
70959+ spin_unlock(&gr_learn_lock);
70960+
70961+ if (copy_to_user(buf, learn_buffer_user, learn_buffer_user_len))
70962+ retval = -EFAULT;
70963+
70964+ mutex_unlock(&gr_learn_user_mutex);
70965+out:
70966+ set_current_state(TASK_RUNNING);
70967+ remove_wait_queue(&learn_wait, &wait);
70968+ return retval;
70969+}
70970+
70971+static unsigned int
70972+poll_learn(struct file * file, poll_table * wait)
70973+{
70974+ poll_wait(file, &learn_wait, wait);
70975+
70976+ if (learn_buffer_len)
70977+ return (POLLIN | POLLRDNORM);
70978+
70979+ return 0;
70980+}
70981+
70982+void
70983+gr_clear_learn_entries(void)
70984+{
70985+ char *tmp;
70986+
70987+ mutex_lock(&gr_learn_user_mutex);
70988+ spin_lock(&gr_learn_lock);
70989+ tmp = learn_buffer;
70990+ learn_buffer = NULL;
70991+ spin_unlock(&gr_learn_lock);
70992+ if (tmp)
70993+ vfree(tmp);
70994+ if (learn_buffer_user != NULL) {
70995+ vfree(learn_buffer_user);
70996+ learn_buffer_user = NULL;
70997+ }
70998+ learn_buffer_len = 0;
70999+ mutex_unlock(&gr_learn_user_mutex);
71000+
71001+ return;
71002+}
71003+
71004+void
71005+gr_add_learn_entry(const char *fmt, ...)
71006+{
71007+ va_list args;
71008+ unsigned int len;
71009+
71010+ if (!gr_learn_attached)
71011+ return;
71012+
71013+ spin_lock(&gr_learn_lock);
71014+
71015+ /* leave a gap at the end so we know when it's "full" but don't have to
71016+ compute the exact length of the string we're trying to append
71017+ */
71018+ if (learn_buffer_len > LEARN_BUFFER_SIZE - 16384) {
71019+ spin_unlock(&gr_learn_lock);
71020+ wake_up_interruptible(&learn_wait);
71021+ return;
71022+ }
71023+ if (learn_buffer == NULL) {
71024+ spin_unlock(&gr_learn_lock);
71025+ return;
71026+ }
71027+
71028+ va_start(args, fmt);
71029+ len = vsnprintf(learn_buffer + learn_buffer_len, LEARN_BUFFER_SIZE - learn_buffer_len, fmt, args);
71030+ va_end(args);
71031+
71032+ learn_buffer_len += len + 1;
71033+
71034+ spin_unlock(&gr_learn_lock);
71035+ wake_up_interruptible(&learn_wait);
71036+
71037+ return;
71038+}
71039+
71040+static int
71041+open_learn(struct inode *inode, struct file *file)
71042+{
71043+ if (file->f_mode & FMODE_READ && gr_learn_attached)
71044+ return -EBUSY;
71045+ if (file->f_mode & FMODE_READ) {
71046+ int retval = 0;
71047+ mutex_lock(&gr_learn_user_mutex);
71048+ if (learn_buffer == NULL)
71049+ learn_buffer = vmalloc(LEARN_BUFFER_SIZE);
71050+ if (learn_buffer_user == NULL)
71051+ learn_buffer_user = vmalloc(LEARN_BUFFER_SIZE);
71052+ if (learn_buffer == NULL) {
71053+ retval = -ENOMEM;
71054+ goto out_error;
71055+ }
71056+ if (learn_buffer_user == NULL) {
71057+ retval = -ENOMEM;
71058+ goto out_error;
71059+ }
71060+ learn_buffer_len = 0;
71061+ learn_buffer_user_len = 0;
71062+ gr_learn_attached = 1;
71063+out_error:
71064+ mutex_unlock(&gr_learn_user_mutex);
71065+ return retval;
71066+ }
71067+ return 0;
71068+}
71069+
71070+static int
71071+close_learn(struct inode *inode, struct file *file)
71072+{
71073+ if (file->f_mode & FMODE_READ) {
71074+ char *tmp = NULL;
71075+ mutex_lock(&gr_learn_user_mutex);
71076+ spin_lock(&gr_learn_lock);
71077+ tmp = learn_buffer;
71078+ learn_buffer = NULL;
71079+ spin_unlock(&gr_learn_lock);
71080+ if (tmp)
71081+ vfree(tmp);
71082+ if (learn_buffer_user != NULL) {
71083+ vfree(learn_buffer_user);
71084+ learn_buffer_user = NULL;
71085+ }
71086+ learn_buffer_len = 0;
71087+ learn_buffer_user_len = 0;
71088+ gr_learn_attached = 0;
71089+ mutex_unlock(&gr_learn_user_mutex);
71090+ }
71091+
71092+ return 0;
71093+}
71094+
71095+const struct file_operations grsec_fops = {
71096+ .read = read_learn,
71097+ .write = write_grsec_handler,
71098+ .open = open_learn,
71099+ .release = close_learn,
71100+ .poll = poll_learn,
71101+};
71102diff --git a/grsecurity/gracl_policy.c b/grsecurity/gracl_policy.c
71103new file mode 100644
71104index 0000000..361a099
71105--- /dev/null
71106+++ b/grsecurity/gracl_policy.c
71107@@ -0,0 +1,1782 @@
71108+#include <linux/kernel.h>
71109+#include <linux/module.h>
71110+#include <linux/sched.h>
71111+#include <linux/mm.h>
71112+#include <linux/file.h>
71113+#include <linux/fs.h>
71114+#include <linux/namei.h>
71115+#include <linux/mount.h>
71116+#include <linux/tty.h>
71117+#include <linux/proc_fs.h>
71118+#include <linux/lglock.h>
71119+#include <linux/slab.h>
71120+#include <linux/vmalloc.h>
71121+#include <linux/types.h>
71122+#include <linux/sysctl.h>
71123+#include <linux/netdevice.h>
71124+#include <linux/ptrace.h>
71125+#include <linux/gracl.h>
71126+#include <linux/gralloc.h>
71127+#include <linux/security.h>
71128+#include <linux/grinternal.h>
71129+#include <linux/pid_namespace.h>
71130+#include <linux/stop_machine.h>
71131+#include <linux/fdtable.h>
71132+#include <linux/percpu.h>
71133+#include <linux/lglock.h>
71134+#include <linux/hugetlb.h>
71135+#include <linux/posix-timers.h>
71136+#include "../fs/mount.h"
71137+
71138+#include <asm/uaccess.h>
71139+#include <asm/errno.h>
71140+#include <asm/mman.h>
71141+
71142+extern struct gr_policy_state *polstate;
71143+
71144+#define FOR_EACH_ROLE_START(role) \
71145+ role = polstate->role_list; \
71146+ while (role) {
71147+
71148+#define FOR_EACH_ROLE_END(role) \
71149+ role = role->prev; \
71150+ }
71151+
71152+struct path gr_real_root;
71153+
71154+extern struct gr_alloc_state *current_alloc_state;
71155+
71156+u16 acl_sp_role_value;
71157+
71158+static DEFINE_MUTEX(gr_dev_mutex);
71159+
71160+extern int chkpw(struct gr_arg *entry, unsigned char *salt, unsigned char *sum);
71161+extern void gr_clear_learn_entries(void);
71162+
71163+static struct gr_arg gr_usermode;
71164+static unsigned char gr_system_salt[GR_SALT_LEN];
71165+static unsigned char gr_system_sum[GR_SHA_LEN];
71166+
71167+static unsigned int gr_auth_attempts = 0;
71168+static unsigned long gr_auth_expires = 0UL;
71169+
71170+struct acl_object_label *fakefs_obj_rw;
71171+struct acl_object_label *fakefs_obj_rwx;
71172+
71173+extern int gr_init_uidset(void);
71174+extern void gr_free_uidset(void);
71175+extern void gr_remove_uid(uid_t uid);
71176+extern int gr_find_uid(uid_t uid);
71177+
71178+extern struct acl_subject_label *__gr_get_subject_for_task(const struct gr_policy_state *state, struct task_struct *task, const char *filename);
71179+extern void __gr_apply_subject_to_task(struct gr_policy_state *state, struct task_struct *task, struct acl_subject_label *subj);
71180+extern int gr_streq(const char *a, const char *b, const unsigned int lena, const unsigned int lenb);
71181+extern void __insert_inodev_entry(const struct gr_policy_state *state, struct inodev_entry *entry);
71182+extern struct acl_role_label *__lookup_acl_role_label(const struct gr_policy_state *state, const struct task_struct *task, const uid_t uid, const gid_t gid);
71183+extern void insert_acl_obj_label(struct acl_object_label *obj, struct acl_subject_label *subj);
71184+extern void insert_acl_subj_label(struct acl_subject_label *obj, struct acl_role_label *role);
71185+extern struct name_entry * __lookup_name_entry(const struct gr_policy_state *state, const char *name);
71186+extern char *gr_to_filename_rbac(const struct dentry *dentry, const struct vfsmount *mnt);
71187+extern struct acl_subject_label *lookup_acl_subj_label(const ino_t ino, const dev_t dev, const struct acl_role_label *role);
71188+extern struct acl_subject_label *lookup_acl_subj_label_deleted(const ino_t ino, const dev_t dev, const struct acl_role_label *role);
71189+extern void assign_special_role(const char *rolename);
71190+extern struct acl_subject_label *chk_subj_label(const struct dentry *l_dentry, const struct vfsmount *l_mnt, const struct acl_role_label *role);
71191+extern int gr_rbac_disable(void *unused);
71192+extern void gr_enable_rbac_system(void);
71193+
71194+static int copy_acl_object_label_normal(struct acl_object_label *obj, const struct acl_object_label *userp)
71195+{
71196+ if (copy_from_user(obj, userp, sizeof(struct acl_object_label)))
71197+ return -EFAULT;
71198+
71199+ return 0;
71200+}
71201+
71202+static int copy_acl_ip_label_normal(struct acl_ip_label *ip, const struct acl_ip_label *userp)
71203+{
71204+ if (copy_from_user(ip, userp, sizeof(struct acl_ip_label)))
71205+ return -EFAULT;
71206+
71207+ return 0;
71208+}
71209+
71210+static int copy_acl_subject_label_normal(struct acl_subject_label *subj, const struct acl_subject_label *userp)
71211+{
71212+ if (copy_from_user(subj, userp, sizeof(struct acl_subject_label)))
71213+ return -EFAULT;
71214+
71215+ return 0;
71216+}
71217+
71218+static int copy_acl_role_label_normal(struct acl_role_label *role, const struct acl_role_label *userp)
71219+{
71220+ if (copy_from_user(role, userp, sizeof(struct acl_role_label)))
71221+ return -EFAULT;
71222+
71223+ return 0;
71224+}
71225+
71226+static int copy_role_allowed_ip_normal(struct role_allowed_ip *roleip, const struct role_allowed_ip *userp)
71227+{
71228+ if (copy_from_user(roleip, userp, sizeof(struct role_allowed_ip)))
71229+ return -EFAULT;
71230+
71231+ return 0;
71232+}
71233+
71234+static int copy_sprole_pw_normal(struct sprole_pw *pw, unsigned long idx, const struct sprole_pw *userp)
71235+{
71236+ if (copy_from_user(pw, userp + idx, sizeof(struct sprole_pw)))
71237+ return -EFAULT;
71238+
71239+ return 0;
71240+}
71241+
71242+static int copy_gr_hash_struct_normal(struct gr_hash_struct *hash, const struct gr_hash_struct *userp)
71243+{
71244+ if (copy_from_user(hash, userp, sizeof(struct gr_hash_struct)))
71245+ return -EFAULT;
71246+
71247+ return 0;
71248+}
71249+
71250+static int copy_role_transition_normal(struct role_transition *trans, const struct role_transition *userp)
71251+{
71252+ if (copy_from_user(trans, userp, sizeof(struct role_transition)))
71253+ return -EFAULT;
71254+
71255+ return 0;
71256+}
71257+
71258+int copy_pointer_from_array_normal(void *ptr, unsigned long idx, const void *userp)
71259+{
71260+ if (copy_from_user(ptr, userp + (idx * sizeof(void *)), sizeof(void *)))
71261+ return -EFAULT;
71262+
71263+ return 0;
71264+}
71265+
71266+static int copy_gr_arg_wrapper_normal(const char __user *buf, struct gr_arg_wrapper *uwrap)
71267+{
71268+ if (copy_from_user(uwrap, buf, sizeof (struct gr_arg_wrapper)))
71269+ return -EFAULT;
71270+
71271+ if (((uwrap->version != GRSECURITY_VERSION) &&
71272+ (uwrap->version != 0x2901)) ||
71273+ (uwrap->size != sizeof(struct gr_arg)))
71274+ return -EINVAL;
71275+
71276+ return 0;
71277+}
71278+
71279+static int copy_gr_arg_normal(const struct gr_arg __user *buf, struct gr_arg *arg)
71280+{
71281+ if (copy_from_user(arg, buf, sizeof (struct gr_arg)))
71282+ return -EFAULT;
71283+
71284+ return 0;
71285+}
71286+
71287+static size_t get_gr_arg_wrapper_size_normal(void)
71288+{
71289+ return sizeof(struct gr_arg_wrapper);
71290+}
71291+
71292+#ifdef CONFIG_COMPAT
71293+extern int copy_gr_arg_wrapper_compat(const char *buf, struct gr_arg_wrapper *uwrap);
71294+extern int copy_gr_arg_compat(const struct gr_arg __user *buf, struct gr_arg *arg);
71295+extern int copy_acl_object_label_compat(struct acl_object_label *obj, const struct acl_object_label *userp);
71296+extern int copy_acl_subject_label_compat(struct acl_subject_label *subj, const struct acl_subject_label *userp);
71297+extern int copy_acl_role_label_compat(struct acl_role_label *role, const struct acl_role_label *userp);
71298+extern int copy_role_allowed_ip_compat(struct role_allowed_ip *roleip, const struct role_allowed_ip *userp);
71299+extern int copy_role_transition_compat(struct role_transition *trans, const struct role_transition *userp);
71300+extern int copy_gr_hash_struct_compat(struct gr_hash_struct *hash, const struct gr_hash_struct *userp);
71301+extern int copy_pointer_from_array_compat(void *ptr, unsigned long idx, const void *userp);
71302+extern int copy_acl_ip_label_compat(struct acl_ip_label *ip, const struct acl_ip_label *userp);
71303+extern int copy_sprole_pw_compat(struct sprole_pw *pw, unsigned long idx, const struct sprole_pw *userp);
71304+extern size_t get_gr_arg_wrapper_size_compat(void);
71305+
71306+int (* copy_gr_arg_wrapper)(const char *buf, struct gr_arg_wrapper *uwrap) __read_only;
71307+int (* copy_gr_arg)(const struct gr_arg *buf, struct gr_arg *arg) __read_only;
71308+int (* copy_acl_object_label)(struct acl_object_label *obj, const struct acl_object_label *userp) __read_only;
71309+int (* copy_acl_subject_label)(struct acl_subject_label *subj, const struct acl_subject_label *userp) __read_only;
71310+int (* copy_acl_role_label)(struct acl_role_label *role, const struct acl_role_label *userp) __read_only;
71311+int (* copy_acl_ip_label)(struct acl_ip_label *ip, const struct acl_ip_label *userp) __read_only;
71312+int (* copy_pointer_from_array)(void *ptr, unsigned long idx, const void *userp) __read_only;
71313+int (* copy_sprole_pw)(struct sprole_pw *pw, unsigned long idx, const struct sprole_pw *userp) __read_only;
71314+int (* copy_gr_hash_struct)(struct gr_hash_struct *hash, const struct gr_hash_struct *userp) __read_only;
71315+int (* copy_role_transition)(struct role_transition *trans, const struct role_transition *userp) __read_only;
71316+int (* copy_role_allowed_ip)(struct role_allowed_ip *roleip, const struct role_allowed_ip *userp) __read_only;
71317+size_t (* get_gr_arg_wrapper_size)(void) __read_only;
71318+
71319+#else
71320+#define copy_gr_arg_wrapper copy_gr_arg_wrapper_normal
71321+#define copy_gr_arg copy_gr_arg_normal
71322+#define copy_gr_hash_struct copy_gr_hash_struct_normal
71323+#define copy_acl_object_label copy_acl_object_label_normal
71324+#define copy_acl_subject_label copy_acl_subject_label_normal
71325+#define copy_acl_role_label copy_acl_role_label_normal
71326+#define copy_acl_ip_label copy_acl_ip_label_normal
71327+#define copy_pointer_from_array copy_pointer_from_array_normal
71328+#define copy_sprole_pw copy_sprole_pw_normal
71329+#define copy_role_transition copy_role_transition_normal
71330+#define copy_role_allowed_ip copy_role_allowed_ip_normal
71331+#define get_gr_arg_wrapper_size get_gr_arg_wrapper_size_normal
71332+#endif
71333+
71334+static struct acl_subject_label *
71335+lookup_subject_map(const struct acl_subject_label *userp)
71336+{
71337+ unsigned int index = gr_shash(userp, polstate->subj_map_set.s_size);
71338+ struct subject_map *match;
71339+
71340+ match = polstate->subj_map_set.s_hash[index];
71341+
71342+ while (match && match->user != userp)
71343+ match = match->next;
71344+
71345+ if (match != NULL)
71346+ return match->kernel;
71347+ else
71348+ return NULL;
71349+}
71350+
71351+static void
71352+insert_subj_map_entry(struct subject_map *subjmap)
71353+{
71354+ unsigned int index = gr_shash(subjmap->user, polstate->subj_map_set.s_size);
71355+ struct subject_map **curr;
71356+
71357+ subjmap->prev = NULL;
71358+
71359+ curr = &polstate->subj_map_set.s_hash[index];
71360+ if (*curr != NULL)
71361+ (*curr)->prev = subjmap;
71362+
71363+ subjmap->next = *curr;
71364+ *curr = subjmap;
71365+
71366+ return;
71367+}
71368+
71369+static void
71370+__insert_acl_role_label(struct acl_role_label *role, uid_t uidgid)
71371+{
71372+ unsigned int index =
71373+ gr_rhash(uidgid, role->roletype & (GR_ROLE_USER | GR_ROLE_GROUP), polstate->acl_role_set.r_size);
71374+ struct acl_role_label **curr;
71375+ struct acl_role_label *tmp, *tmp2;
71376+
71377+ curr = &polstate->acl_role_set.r_hash[index];
71378+
71379+ /* simple case, slot is empty, just set it to our role */
71380+ if (*curr == NULL) {
71381+ *curr = role;
71382+ } else {
71383+ /* example:
71384+ 1 -> 2 -> 3 (adding 2 -> 3 to here)
71385+ 2 -> 3
71386+ */
71387+ /* first check to see if we can already be reached via this slot */
71388+ tmp = *curr;
71389+ while (tmp && tmp != role)
71390+ tmp = tmp->next;
71391+ if (tmp == role) {
71392+ /* we don't need to add ourselves to this slot's chain */
71393+ return;
71394+ }
71395+ /* we need to add ourselves to this chain, two cases */
71396+ if (role->next == NULL) {
71397+ /* simple case, append the current chain to our role */
71398+ role->next = *curr;
71399+ *curr = role;
71400+ } else {
71401+ /* 1 -> 2 -> 3 -> 4
71402+ 2 -> 3 -> 4
71403+ 3 -> 4 (adding 1 -> 2 -> 3 -> 4 to here)
71404+ */
71405+ /* trickier case: walk our role's chain until we find
71406+ the role for the start of the current slot's chain */
71407+ tmp = role;
71408+ tmp2 = *curr;
71409+ while (tmp->next && tmp->next != tmp2)
71410+ tmp = tmp->next;
71411+ if (tmp->next == tmp2) {
71412+ /* from example above, we found 3, so just
71413+ replace this slot's chain with ours */
71414+ *curr = role;
71415+ } else {
71416+ /* we didn't find a subset of our role's chain
71417+ in the current slot's chain, so append their
71418+ chain to ours, and set us as the first role in
71419+ the slot's chain
71420+
71421+ we could fold this case with the case above,
71422+ but making it explicit for clarity
71423+ */
71424+ tmp->next = tmp2;
71425+ *curr = role;
71426+ }
71427+ }
71428+ }
71429+
71430+ return;
71431+}
71432+
71433+static void
71434+insert_acl_role_label(struct acl_role_label *role)
71435+{
71436+ int i;
71437+
71438+ if (polstate->role_list == NULL) {
71439+ polstate->role_list = role;
71440+ role->prev = NULL;
71441+ } else {
71442+ role->prev = polstate->role_list;
71443+ polstate->role_list = role;
71444+ }
71445+
71446+ /* used for hash chains */
71447+ role->next = NULL;
71448+
71449+ if (role->roletype & GR_ROLE_DOMAIN) {
71450+ for (i = 0; i < role->domain_child_num; i++)
71451+ __insert_acl_role_label(role, role->domain_children[i]);
71452+ } else
71453+ __insert_acl_role_label(role, role->uidgid);
71454+}
71455+
71456+static int
71457+insert_name_entry(char *name, const ino_t inode, const dev_t device, __u8 deleted)
71458+{
71459+ struct name_entry **curr, *nentry;
71460+ struct inodev_entry *ientry;
71461+ unsigned int len = strlen(name);
71462+ unsigned int key = full_name_hash(name, len);
71463+ unsigned int index = key % polstate->name_set.n_size;
71464+
71465+ curr = &polstate->name_set.n_hash[index];
71466+
71467+ while (*curr && ((*curr)->key != key || !gr_streq((*curr)->name, name, (*curr)->len, len)))
71468+ curr = &((*curr)->next);
71469+
71470+ if (*curr != NULL)
71471+ return 1;
71472+
71473+ nentry = acl_alloc(sizeof (struct name_entry));
71474+ if (nentry == NULL)
71475+ return 0;
71476+ ientry = acl_alloc(sizeof (struct inodev_entry));
71477+ if (ientry == NULL)
71478+ return 0;
71479+ ientry->nentry = nentry;
71480+
71481+ nentry->key = key;
71482+ nentry->name = name;
71483+ nentry->inode = inode;
71484+ nentry->device = device;
71485+ nentry->len = len;
71486+ nentry->deleted = deleted;
71487+
71488+ nentry->prev = NULL;
71489+ curr = &polstate->name_set.n_hash[index];
71490+ if (*curr != NULL)
71491+ (*curr)->prev = nentry;
71492+ nentry->next = *curr;
71493+ *curr = nentry;
71494+
71495+ /* insert us into the table searchable by inode/dev */
71496+ __insert_inodev_entry(polstate, ientry);
71497+
71498+ return 1;
71499+}
71500+
71501+/* allocating chained hash tables, so optimal size is where lambda ~ 1 */
71502+
71503+static void *
71504+create_table(__u32 * len, int elementsize)
71505+{
71506+ unsigned int table_sizes[] = {
71507+ 7, 13, 31, 61, 127, 251, 509, 1021, 2039, 4093, 8191, 16381,
71508+ 32749, 65521, 131071, 262139, 524287, 1048573, 2097143,
71509+ 4194301, 8388593, 16777213, 33554393, 67108859
71510+ };
71511+ void *newtable = NULL;
71512+ unsigned int pwr = 0;
71513+
71514+ while ((pwr < ((sizeof (table_sizes) / sizeof (table_sizes[0])) - 1)) &&
71515+ table_sizes[pwr] <= *len)
71516+ pwr++;
71517+
71518+ if (table_sizes[pwr] <= *len || (table_sizes[pwr] > ULONG_MAX / elementsize))
71519+ return newtable;
71520+
71521+ if ((table_sizes[pwr] * elementsize) <= PAGE_SIZE)
71522+ newtable =
71523+ kmalloc(table_sizes[pwr] * elementsize, GFP_KERNEL);
71524+ else
71525+ newtable = vmalloc(table_sizes[pwr] * elementsize);
71526+
71527+ *len = table_sizes[pwr];
71528+
71529+ return newtable;
71530+}
71531+
71532+static int
71533+init_variables(const struct gr_arg *arg, bool reload)
71534+{
71535+ struct task_struct *reaper = init_pid_ns.child_reaper;
71536+ unsigned int stacksize;
71537+
71538+ polstate->subj_map_set.s_size = arg->role_db.num_subjects;
71539+ polstate->acl_role_set.r_size = arg->role_db.num_roles + arg->role_db.num_domain_children;
71540+ polstate->name_set.n_size = arg->role_db.num_objects;
71541+ polstate->inodev_set.i_size = arg->role_db.num_objects;
71542+
71543+ if (!polstate->subj_map_set.s_size || !polstate->acl_role_set.r_size ||
71544+ !polstate->name_set.n_size || !polstate->inodev_set.i_size)
71545+ return 1;
71546+
71547+ if (!reload) {
71548+ if (!gr_init_uidset())
71549+ return 1;
71550+ }
71551+
71552+ /* set up the stack that holds allocation info */
71553+
71554+ stacksize = arg->role_db.num_pointers + 5;
71555+
71556+ if (!acl_alloc_stack_init(stacksize))
71557+ return 1;
71558+
71559+ if (!reload) {
71560+ /* grab reference for the real root dentry and vfsmount */
71561+ get_fs_root(reaper->fs, &gr_real_root);
71562+
71563+#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG
71564+ printk(KERN_ALERT "Obtained real root device=%d, inode=%lu\n", __get_dev(gr_real_root.dentry), gr_real_root.dentry->d_inode->i_ino);
71565+#endif
71566+
71567+ fakefs_obj_rw = kzalloc(sizeof(struct acl_object_label), GFP_KERNEL);
71568+ if (fakefs_obj_rw == NULL)
71569+ return 1;
71570+ fakefs_obj_rw->mode = GR_FIND | GR_READ | GR_WRITE;
71571+
71572+ fakefs_obj_rwx = kzalloc(sizeof(struct acl_object_label), GFP_KERNEL);
71573+ if (fakefs_obj_rwx == NULL)
71574+ return 1;
71575+ fakefs_obj_rwx->mode = GR_FIND | GR_READ | GR_WRITE | GR_EXEC;
71576+ }
71577+
71578+ polstate->subj_map_set.s_hash =
71579+ (struct subject_map **) create_table(&polstate->subj_map_set.s_size, sizeof(void *));
71580+ polstate->acl_role_set.r_hash =
71581+ (struct acl_role_label **) create_table(&polstate->acl_role_set.r_size, sizeof(void *));
71582+ polstate->name_set.n_hash = (struct name_entry **) create_table(&polstate->name_set.n_size, sizeof(void *));
71583+ polstate->inodev_set.i_hash =
71584+ (struct inodev_entry **) create_table(&polstate->inodev_set.i_size, sizeof(void *));
71585+
71586+ if (!polstate->subj_map_set.s_hash || !polstate->acl_role_set.r_hash ||
71587+ !polstate->name_set.n_hash || !polstate->inodev_set.i_hash)
71588+ return 1;
71589+
71590+ memset(polstate->subj_map_set.s_hash, 0,
71591+ sizeof(struct subject_map *) * polstate->subj_map_set.s_size);
71592+ memset(polstate->acl_role_set.r_hash, 0,
71593+ sizeof (struct acl_role_label *) * polstate->acl_role_set.r_size);
71594+ memset(polstate->name_set.n_hash, 0,
71595+ sizeof (struct name_entry *) * polstate->name_set.n_size);
71596+ memset(polstate->inodev_set.i_hash, 0,
71597+ sizeof (struct inodev_entry *) * polstate->inodev_set.i_size);
71598+
71599+ return 0;
71600+}
71601+
71602+/* free information not needed after startup
71603+ currently contains user->kernel pointer mappings for subjects
71604+*/
71605+
71606+static void
71607+free_init_variables(void)
71608+{
71609+ __u32 i;
71610+
71611+ if (polstate->subj_map_set.s_hash) {
71612+ for (i = 0; i < polstate->subj_map_set.s_size; i++) {
71613+ if (polstate->subj_map_set.s_hash[i]) {
71614+ kfree(polstate->subj_map_set.s_hash[i]);
71615+ polstate->subj_map_set.s_hash[i] = NULL;
71616+ }
71617+ }
71618+
71619+ if ((polstate->subj_map_set.s_size * sizeof (struct subject_map *)) <=
71620+ PAGE_SIZE)
71621+ kfree(polstate->subj_map_set.s_hash);
71622+ else
71623+ vfree(polstate->subj_map_set.s_hash);
71624+ }
71625+
71626+ return;
71627+}
71628+
71629+static void
71630+free_variables(bool reload)
71631+{
71632+ struct acl_subject_label *s;
71633+ struct acl_role_label *r;
71634+ struct task_struct *task, *task2;
71635+ unsigned int x;
71636+
71637+ if (!reload) {
71638+ gr_clear_learn_entries();
71639+
71640+ read_lock(&tasklist_lock);
71641+ do_each_thread(task2, task) {
71642+ task->acl_sp_role = 0;
71643+ task->acl_role_id = 0;
71644+ task->inherited = 0;
71645+ task->acl = NULL;
71646+ task->role = NULL;
71647+ } while_each_thread(task2, task);
71648+ read_unlock(&tasklist_lock);
71649+
71650+ kfree(fakefs_obj_rw);
71651+ fakefs_obj_rw = NULL;
71652+ kfree(fakefs_obj_rwx);
71653+ fakefs_obj_rwx = NULL;
71654+
71655+ /* release the reference to the real root dentry and vfsmount */
71656+ path_put(&gr_real_root);
71657+ memset(&gr_real_root, 0, sizeof(gr_real_root));
71658+ }
71659+
71660+ /* free all object hash tables */
71661+
71662+ FOR_EACH_ROLE_START(r)
71663+ if (r->subj_hash == NULL)
71664+ goto next_role;
71665+ FOR_EACH_SUBJECT_START(r, s, x)
71666+ if (s->obj_hash == NULL)
71667+ break;
71668+ if ((s->obj_hash_size * sizeof (struct acl_object_label *)) <= PAGE_SIZE)
71669+ kfree(s->obj_hash);
71670+ else
71671+ vfree(s->obj_hash);
71672+ FOR_EACH_SUBJECT_END(s, x)
71673+ FOR_EACH_NESTED_SUBJECT_START(r, s)
71674+ if (s->obj_hash == NULL)
71675+ break;
71676+ if ((s->obj_hash_size * sizeof (struct acl_object_label *)) <= PAGE_SIZE)
71677+ kfree(s->obj_hash);
71678+ else
71679+ vfree(s->obj_hash);
71680+ FOR_EACH_NESTED_SUBJECT_END(s)
71681+ if ((r->subj_hash_size * sizeof (struct acl_subject_label *)) <= PAGE_SIZE)
71682+ kfree(r->subj_hash);
71683+ else
71684+ vfree(r->subj_hash);
71685+ r->subj_hash = NULL;
71686+next_role:
71687+ FOR_EACH_ROLE_END(r)
71688+
71689+ acl_free_all();
71690+
71691+ if (polstate->acl_role_set.r_hash) {
71692+ if ((polstate->acl_role_set.r_size * sizeof (struct acl_role_label *)) <=
71693+ PAGE_SIZE)
71694+ kfree(polstate->acl_role_set.r_hash);
71695+ else
71696+ vfree(polstate->acl_role_set.r_hash);
71697+ }
71698+ if (polstate->name_set.n_hash) {
71699+ if ((polstate->name_set.n_size * sizeof (struct name_entry *)) <=
71700+ PAGE_SIZE)
71701+ kfree(polstate->name_set.n_hash);
71702+ else
71703+ vfree(polstate->name_set.n_hash);
71704+ }
71705+
71706+ if (polstate->inodev_set.i_hash) {
71707+ if ((polstate->inodev_set.i_size * sizeof (struct inodev_entry *)) <=
71708+ PAGE_SIZE)
71709+ kfree(polstate->inodev_set.i_hash);
71710+ else
71711+ vfree(polstate->inodev_set.i_hash);
71712+ }
71713+
71714+ if (!reload)
71715+ gr_free_uidset();
71716+
71717+ memset(&polstate->name_set, 0, sizeof (struct name_db));
71718+ memset(&polstate->inodev_set, 0, sizeof (struct inodev_db));
71719+ memset(&polstate->acl_role_set, 0, sizeof (struct acl_role_db));
71720+ memset(&polstate->subj_map_set, 0, sizeof (struct acl_subj_map_db));
71721+
71722+ polstate->default_role = NULL;
71723+ polstate->kernel_role = NULL;
71724+ polstate->role_list = NULL;
71725+
71726+ return;
71727+}
71728+
71729+static struct acl_subject_label *
71730+do_copy_user_subj(struct acl_subject_label *userp, struct acl_role_label *role, int *already_copied);
71731+
71732+static int alloc_and_copy_string(char **name, unsigned int maxlen)
71733+{
71734+ unsigned int len = strnlen_user(*name, maxlen);
71735+ char *tmp;
71736+
71737+ if (!len || len >= maxlen)
71738+ return -EINVAL;
71739+
71740+ if ((tmp = (char *) acl_alloc(len)) == NULL)
71741+ return -ENOMEM;
71742+
71743+ if (copy_from_user(tmp, *name, len))
71744+ return -EFAULT;
71745+
71746+ tmp[len-1] = '\0';
71747+ *name = tmp;
71748+
71749+ return 0;
71750+}
71751+
71752+static int
71753+copy_user_glob(struct acl_object_label *obj)
71754+{
71755+ struct acl_object_label *g_tmp, **guser;
71756+ int error;
71757+
71758+ if (obj->globbed == NULL)
71759+ return 0;
71760+
71761+ guser = &obj->globbed;
71762+ while (*guser) {
71763+ g_tmp = (struct acl_object_label *)
71764+ acl_alloc(sizeof (struct acl_object_label));
71765+ if (g_tmp == NULL)
71766+ return -ENOMEM;
71767+
71768+ if (copy_acl_object_label(g_tmp, *guser))
71769+ return -EFAULT;
71770+
71771+ error = alloc_and_copy_string(&g_tmp->filename, PATH_MAX);
71772+ if (error)
71773+ return error;
71774+
71775+ *guser = g_tmp;
71776+ guser = &(g_tmp->next);
71777+ }
71778+
71779+ return 0;
71780+}
71781+
71782+static int
71783+copy_user_objs(struct acl_object_label *userp, struct acl_subject_label *subj,
71784+ struct acl_role_label *role)
71785+{
71786+ struct acl_object_label *o_tmp;
71787+ int ret;
71788+
71789+ while (userp) {
71790+ if ((o_tmp = (struct acl_object_label *)
71791+ acl_alloc(sizeof (struct acl_object_label))) == NULL)
71792+ return -ENOMEM;
71793+
71794+ if (copy_acl_object_label(o_tmp, userp))
71795+ return -EFAULT;
71796+
71797+ userp = o_tmp->prev;
71798+
71799+ ret = alloc_and_copy_string(&o_tmp->filename, PATH_MAX);
71800+ if (ret)
71801+ return ret;
71802+
71803+ insert_acl_obj_label(o_tmp, subj);
71804+ if (!insert_name_entry(o_tmp->filename, o_tmp->inode,
71805+ o_tmp->device, (o_tmp->mode & GR_DELETED) ? 1 : 0))
71806+ return -ENOMEM;
71807+
71808+ ret = copy_user_glob(o_tmp);
71809+ if (ret)
71810+ return ret;
71811+
71812+ if (o_tmp->nested) {
71813+ int already_copied;
71814+
71815+ o_tmp->nested = do_copy_user_subj(o_tmp->nested, role, &already_copied);
71816+ if (IS_ERR(o_tmp->nested))
71817+ return PTR_ERR(o_tmp->nested);
71818+
71819+ /* insert into nested subject list if we haven't copied this one yet
71820+ to prevent duplicate entries */
71821+ if (!already_copied) {
71822+ o_tmp->nested->next = role->hash->first;
71823+ role->hash->first = o_tmp->nested;
71824+ }
71825+ }
71826+ }
71827+
71828+ return 0;
71829+}
71830+
71831+static __u32
71832+count_user_subjs(struct acl_subject_label *userp)
71833+{
71834+ struct acl_subject_label s_tmp;
71835+ __u32 num = 0;
71836+
71837+ while (userp) {
71838+ if (copy_acl_subject_label(&s_tmp, userp))
71839+ break;
71840+
71841+ userp = s_tmp.prev;
71842+ }
71843+
71844+ return num;
71845+}
71846+
71847+static int
71848+copy_user_allowedips(struct acl_role_label *rolep)
71849+{
71850+ struct role_allowed_ip *ruserip, *rtmp = NULL, *rlast;
71851+
71852+ ruserip = rolep->allowed_ips;
71853+
71854+ while (ruserip) {
71855+ rlast = rtmp;
71856+
71857+ if ((rtmp = (struct role_allowed_ip *)
71858+ acl_alloc(sizeof (struct role_allowed_ip))) == NULL)
71859+ return -ENOMEM;
71860+
71861+ if (copy_role_allowed_ip(rtmp, ruserip))
71862+ return -EFAULT;
71863+
71864+ ruserip = rtmp->prev;
71865+
71866+ if (!rlast) {
71867+ rtmp->prev = NULL;
71868+ rolep->allowed_ips = rtmp;
71869+ } else {
71870+ rlast->next = rtmp;
71871+ rtmp->prev = rlast;
71872+ }
71873+
71874+ if (!ruserip)
71875+ rtmp->next = NULL;
71876+ }
71877+
71878+ return 0;
71879+}
71880+
71881+static int
71882+copy_user_transitions(struct acl_role_label *rolep)
71883+{
71884+ struct role_transition *rusertp, *rtmp = NULL, *rlast;
71885+ int error;
71886+
71887+ rusertp = rolep->transitions;
71888+
71889+ while (rusertp) {
71890+ rlast = rtmp;
71891+
71892+ if ((rtmp = (struct role_transition *)
71893+ acl_alloc(sizeof (struct role_transition))) == NULL)
71894+ return -ENOMEM;
71895+
71896+ if (copy_role_transition(rtmp, rusertp))
71897+ return -EFAULT;
71898+
71899+ rusertp = rtmp->prev;
71900+
71901+ error = alloc_and_copy_string(&rtmp->rolename, GR_SPROLE_LEN);
71902+ if (error)
71903+ return error;
71904+
71905+ if (!rlast) {
71906+ rtmp->prev = NULL;
71907+ rolep->transitions = rtmp;
71908+ } else {
71909+ rlast->next = rtmp;
71910+ rtmp->prev = rlast;
71911+ }
71912+
71913+ if (!rusertp)
71914+ rtmp->next = NULL;
71915+ }
71916+
71917+ return 0;
71918+}
71919+
71920+static __u32 count_user_objs(const struct acl_object_label __user *userp)
71921+{
71922+ struct acl_object_label o_tmp;
71923+ __u32 num = 0;
71924+
71925+ while (userp) {
71926+ if (copy_acl_object_label(&o_tmp, userp))
71927+ break;
71928+
71929+ userp = o_tmp.prev;
71930+ num++;
71931+ }
71932+
71933+ return num;
71934+}
71935+
71936+static struct acl_subject_label *
71937+do_copy_user_subj(struct acl_subject_label *userp, struct acl_role_label *role, int *already_copied)
71938+{
71939+ struct acl_subject_label *s_tmp = NULL, *s_tmp2;
71940+ __u32 num_objs;
71941+ struct acl_ip_label **i_tmp, *i_utmp2;
71942+ struct gr_hash_struct ghash;
71943+ struct subject_map *subjmap;
71944+ unsigned int i_num;
71945+ int err;
71946+
71947+ if (already_copied != NULL)
71948+ *already_copied = 0;
71949+
71950+ s_tmp = lookup_subject_map(userp);
71951+
71952+ /* we've already copied this subject into the kernel, just return
71953+ the reference to it, and don't copy it over again
71954+ */
71955+ if (s_tmp) {
71956+ if (already_copied != NULL)
71957+ *already_copied = 1;
71958+ return(s_tmp);
71959+ }
71960+
71961+ if ((s_tmp = (struct acl_subject_label *)
71962+ acl_alloc(sizeof (struct acl_subject_label))) == NULL)
71963+ return ERR_PTR(-ENOMEM);
71964+
71965+ subjmap = (struct subject_map *)kmalloc(sizeof (struct subject_map), GFP_KERNEL);
71966+ if (subjmap == NULL)
71967+ return ERR_PTR(-ENOMEM);
71968+
71969+ subjmap->user = userp;
71970+ subjmap->kernel = s_tmp;
71971+ insert_subj_map_entry(subjmap);
71972+
71973+ if (copy_acl_subject_label(s_tmp, userp))
71974+ return ERR_PTR(-EFAULT);
71975+
71976+ err = alloc_and_copy_string(&s_tmp->filename, PATH_MAX);
71977+ if (err)
71978+ return ERR_PTR(err);
71979+
71980+ if (!strcmp(s_tmp->filename, "/"))
71981+ role->root_label = s_tmp;
71982+
71983+ if (copy_gr_hash_struct(&ghash, s_tmp->hash))
71984+ return ERR_PTR(-EFAULT);
71985+
71986+ /* copy user and group transition tables */
71987+
71988+ if (s_tmp->user_trans_num) {
71989+ uid_t *uidlist;
71990+
71991+ uidlist = (uid_t *)acl_alloc_num(s_tmp->user_trans_num, sizeof(uid_t));
71992+ if (uidlist == NULL)
71993+ return ERR_PTR(-ENOMEM);
71994+ if (copy_from_user(uidlist, s_tmp->user_transitions, s_tmp->user_trans_num * sizeof(uid_t)))
71995+ return ERR_PTR(-EFAULT);
71996+
71997+ s_tmp->user_transitions = uidlist;
71998+ }
71999+
72000+ if (s_tmp->group_trans_num) {
72001+ gid_t *gidlist;
72002+
72003+ gidlist = (gid_t *)acl_alloc_num(s_tmp->group_trans_num, sizeof(gid_t));
72004+ if (gidlist == NULL)
72005+ return ERR_PTR(-ENOMEM);
72006+ if (copy_from_user(gidlist, s_tmp->group_transitions, s_tmp->group_trans_num * sizeof(gid_t)))
72007+ return ERR_PTR(-EFAULT);
72008+
72009+ s_tmp->group_transitions = gidlist;
72010+ }
72011+
72012+ /* set up object hash table */
72013+ num_objs = count_user_objs(ghash.first);
72014+
72015+ s_tmp->obj_hash_size = num_objs;
72016+ s_tmp->obj_hash =
72017+ (struct acl_object_label **)
72018+ create_table(&(s_tmp->obj_hash_size), sizeof(void *));
72019+
72020+ if (!s_tmp->obj_hash)
72021+ return ERR_PTR(-ENOMEM);
72022+
72023+ memset(s_tmp->obj_hash, 0,
72024+ s_tmp->obj_hash_size *
72025+ sizeof (struct acl_object_label *));
72026+
72027+ /* add in objects */
72028+ err = copy_user_objs(ghash.first, s_tmp, role);
72029+
72030+ if (err)
72031+ return ERR_PTR(err);
72032+
72033+ /* set pointer for parent subject */
72034+ if (s_tmp->parent_subject) {
72035+ s_tmp2 = do_copy_user_subj(s_tmp->parent_subject, role, NULL);
72036+
72037+ if (IS_ERR(s_tmp2))
72038+ return s_tmp2;
72039+
72040+ s_tmp->parent_subject = s_tmp2;
72041+ }
72042+
72043+ /* add in ip acls */
72044+
72045+ if (!s_tmp->ip_num) {
72046+ s_tmp->ips = NULL;
72047+ goto insert;
72048+ }
72049+
72050+ i_tmp =
72051+ (struct acl_ip_label **) acl_alloc_num(s_tmp->ip_num,
72052+ sizeof (struct acl_ip_label *));
72053+
72054+ if (!i_tmp)
72055+ return ERR_PTR(-ENOMEM);
72056+
72057+ for (i_num = 0; i_num < s_tmp->ip_num; i_num++) {
72058+ *(i_tmp + i_num) =
72059+ (struct acl_ip_label *)
72060+ acl_alloc(sizeof (struct acl_ip_label));
72061+ if (!*(i_tmp + i_num))
72062+ return ERR_PTR(-ENOMEM);
72063+
72064+ if (copy_pointer_from_array(&i_utmp2, i_num, s_tmp->ips))
72065+ return ERR_PTR(-EFAULT);
72066+
72067+ if (copy_acl_ip_label(*(i_tmp + i_num), i_utmp2))
72068+ return ERR_PTR(-EFAULT);
72069+
72070+ if ((*(i_tmp + i_num))->iface == NULL)
72071+ continue;
72072+
72073+ err = alloc_and_copy_string(&(*(i_tmp + i_num))->iface, IFNAMSIZ);
72074+ if (err)
72075+ return ERR_PTR(err);
72076+ }
72077+
72078+ s_tmp->ips = i_tmp;
72079+
72080+insert:
72081+ if (!insert_name_entry(s_tmp->filename, s_tmp->inode,
72082+ s_tmp->device, (s_tmp->mode & GR_DELETED) ? 1 : 0))
72083+ return ERR_PTR(-ENOMEM);
72084+
72085+ return s_tmp;
72086+}
72087+
72088+static int
72089+copy_user_subjs(struct acl_subject_label *userp, struct acl_role_label *role)
72090+{
72091+ struct acl_subject_label s_pre;
72092+ struct acl_subject_label * ret;
72093+ int err;
72094+
72095+ while (userp) {
72096+ if (copy_acl_subject_label(&s_pre, userp))
72097+ return -EFAULT;
72098+
72099+ ret = do_copy_user_subj(userp, role, NULL);
72100+
72101+ err = PTR_ERR(ret);
72102+ if (IS_ERR(ret))
72103+ return err;
72104+
72105+ insert_acl_subj_label(ret, role);
72106+
72107+ userp = s_pre.prev;
72108+ }
72109+
72110+ return 0;
72111+}
72112+
72113+static int
72114+copy_user_acl(struct gr_arg *arg)
72115+{
72116+ struct acl_role_label *r_tmp = NULL, **r_utmp, *r_utmp2;
72117+ struct acl_subject_label *subj_list;
72118+ struct sprole_pw *sptmp;
72119+ struct gr_hash_struct *ghash;
72120+ uid_t *domainlist;
72121+ unsigned int r_num;
72122+ int err = 0;
72123+ __u16 i;
72124+ __u32 num_subjs;
72125+
72126+ /* we need a default and kernel role */
72127+ if (arg->role_db.num_roles < 2)
72128+ return -EINVAL;
72129+
72130+ /* copy special role authentication info from userspace */
72131+
72132+ polstate->num_sprole_pws = arg->num_sprole_pws;
72133+ polstate->acl_special_roles = (struct sprole_pw **) acl_alloc_num(polstate->num_sprole_pws, sizeof(struct sprole_pw *));
72134+
72135+ if (!polstate->acl_special_roles && polstate->num_sprole_pws)
72136+ return -ENOMEM;
72137+
72138+ for (i = 0; i < polstate->num_sprole_pws; i++) {
72139+ sptmp = (struct sprole_pw *) acl_alloc(sizeof(struct sprole_pw));
72140+ if (!sptmp)
72141+ return -ENOMEM;
72142+ if (copy_sprole_pw(sptmp, i, arg->sprole_pws))
72143+ return -EFAULT;
72144+
72145+ err = alloc_and_copy_string((char **)&sptmp->rolename, GR_SPROLE_LEN);
72146+ if (err)
72147+ return err;
72148+
72149+#ifdef CONFIG_GRKERNSEC_RBAC_DEBUG
72150+ printk(KERN_ALERT "Copying special role %s\n", sptmp->rolename);
72151+#endif
72152+
72153+ polstate->acl_special_roles[i] = sptmp;
72154+ }
72155+
72156+ r_utmp = (struct acl_role_label **) arg->role_db.r_table;
72157+
72158+ for (r_num = 0; r_num < arg->role_db.num_roles; r_num++) {
72159+ r_tmp = acl_alloc(sizeof (struct acl_role_label));
72160+
72161+ if (!r_tmp)
72162+ return -ENOMEM;
72163+
72164+ if (copy_pointer_from_array(&r_utmp2, r_num, r_utmp))
72165+ return -EFAULT;
72166+
72167+ if (copy_acl_role_label(r_tmp, r_utmp2))
72168+ return -EFAULT;
72169+
72170+ err = alloc_and_copy_string(&r_tmp->rolename, GR_SPROLE_LEN);
72171+ if (err)
72172+ return err;
72173+
72174+ if (!strcmp(r_tmp->rolename, "default")
72175+ && (r_tmp->roletype & GR_ROLE_DEFAULT)) {
72176+ polstate->default_role = r_tmp;
72177+ } else if (!strcmp(r_tmp->rolename, ":::kernel:::")) {
72178+ polstate->kernel_role = r_tmp;
72179+ }
72180+
72181+ if ((ghash = (struct gr_hash_struct *) acl_alloc(sizeof(struct gr_hash_struct))) == NULL)
72182+ return -ENOMEM;
72183+
72184+ if (copy_gr_hash_struct(ghash, r_tmp->hash))
72185+ return -EFAULT;
72186+
72187+ r_tmp->hash = ghash;
72188+
72189+ num_subjs = count_user_subjs(r_tmp->hash->first);
72190+
72191+ r_tmp->subj_hash_size = num_subjs;
72192+ r_tmp->subj_hash =
72193+ (struct acl_subject_label **)
72194+ create_table(&(r_tmp->subj_hash_size), sizeof(void *));
72195+
72196+ if (!r_tmp->subj_hash)
72197+ return -ENOMEM;
72198+
72199+ err = copy_user_allowedips(r_tmp);
72200+ if (err)
72201+ return err;
72202+
72203+ /* copy domain info */
72204+ if (r_tmp->domain_children != NULL) {
72205+ domainlist = acl_alloc_num(r_tmp->domain_child_num, sizeof(uid_t));
72206+ if (domainlist == NULL)
72207+ return -ENOMEM;
72208+
72209+ if (copy_from_user(domainlist, r_tmp->domain_children, r_tmp->domain_child_num * sizeof(uid_t)))
72210+ return -EFAULT;
72211+
72212+ r_tmp->domain_children = domainlist;
72213+ }
72214+
72215+ err = copy_user_transitions(r_tmp);
72216+ if (err)
72217+ return err;
72218+
72219+ memset(r_tmp->subj_hash, 0,
72220+ r_tmp->subj_hash_size *
72221+ sizeof (struct acl_subject_label *));
72222+
72223+ /* acquire the list of subjects, then NULL out
72224+ the list prior to parsing the subjects for this role,
72225+ as during this parsing the list is replaced with a list
72226+ of *nested* subjects for the role
72227+ */
72228+ subj_list = r_tmp->hash->first;
72229+
72230+ /* set nested subject list to null */
72231+ r_tmp->hash->first = NULL;
72232+
72233+ err = copy_user_subjs(subj_list, r_tmp);
72234+
72235+ if (err)
72236+ return err;
72237+
72238+ insert_acl_role_label(r_tmp);
72239+ }
72240+
72241+ if (polstate->default_role == NULL || polstate->kernel_role == NULL)
72242+ return -EINVAL;
72243+
72244+ return err;
72245+}
72246+
72247+static int gracl_reload_apply_policies(void *reload)
72248+{
72249+ struct gr_reload_state *reload_state = (struct gr_reload_state *)reload;
72250+ struct task_struct *task, *task2;
72251+ struct acl_role_label *role, *rtmp;
72252+ struct acl_subject_label *subj;
72253+ const struct cred *cred;
72254+ int role_applied;
72255+ int ret = 0;
72256+
72257+ memcpy(&reload_state->oldpolicy, reload_state->oldpolicy_ptr, sizeof(struct gr_policy_state));
72258+ memcpy(&reload_state->oldalloc, reload_state->oldalloc_ptr, sizeof(struct gr_alloc_state));
72259+
72260+ /* first make sure we'll be able to apply the new policy cleanly */
72261+ do_each_thread(task2, task) {
72262+ if (task->exec_file == NULL)
72263+ continue;
72264+ role_applied = 0;
72265+ if (!reload_state->oldmode && task->role->roletype & GR_ROLE_SPECIAL) {
72266+ /* preserve special roles */
72267+ FOR_EACH_ROLE_START(role)
72268+ if ((role->roletype & GR_ROLE_SPECIAL) && !strcmp(task->role->rolename, role->rolename)) {
72269+ rtmp = task->role;
72270+ task->role = role;
72271+ role_applied = 1;
72272+ break;
72273+ }
72274+ FOR_EACH_ROLE_END(role)
72275+ }
72276+ if (!role_applied) {
72277+ cred = __task_cred(task);
72278+ rtmp = task->role;
72279+ task->role = __lookup_acl_role_label(polstate, task, GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid));
72280+ }
72281+ /* this handles non-nested inherited subjects, nested subjects will still
72282+ be dropped currently */
72283+ subj = __gr_get_subject_for_task(polstate, task, task->acl->filename);
72284+ task->tmpacl = __gr_get_subject_for_task(polstate, task, NULL);
72285+ /* change the role back so that we've made no modifications to the policy */
72286+ task->role = rtmp;
72287+
72288+ if (subj == NULL || task->tmpacl == NULL) {
72289+ ret = -EINVAL;
72290+ goto out;
72291+ }
72292+ } while_each_thread(task2, task);
72293+
72294+ /* now actually apply the policy */
72295+
72296+ do_each_thread(task2, task) {
72297+ if (task->exec_file) {
72298+ role_applied = 0;
72299+ if (!reload_state->oldmode && task->role->roletype & GR_ROLE_SPECIAL) {
72300+ /* preserve special roles */
72301+ FOR_EACH_ROLE_START(role)
72302+ if ((role->roletype & GR_ROLE_SPECIAL) && !strcmp(task->role->rolename, role->rolename)) {
72303+ task->role = role;
72304+ role_applied = 1;
72305+ break;
72306+ }
72307+ FOR_EACH_ROLE_END(role)
72308+ }
72309+ if (!role_applied) {
72310+ cred = __task_cred(task);
72311+ task->role = __lookup_acl_role_label(polstate, task, GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid));
72312+ }
72313+ /* this handles non-nested inherited subjects, nested subjects will still
72314+ be dropped currently */
72315+ if (!reload_state->oldmode && task->inherited)
72316+ subj = __gr_get_subject_for_task(polstate, task, task->acl->filename);
72317+ else {
72318+ /* looked up and tagged to the task previously */
72319+ subj = task->tmpacl;
72320+ }
72321+ /* subj will be non-null */
72322+ __gr_apply_subject_to_task(polstate, task, subj);
72323+ if (reload_state->oldmode) {
72324+ task->acl_role_id = 0;
72325+ task->acl_sp_role = 0;
72326+ task->inherited = 0;
72327+ }
72328+ } else {
72329+ // it's a kernel process
72330+ task->role = polstate->kernel_role;
72331+ task->acl = polstate->kernel_role->root_label;
72332+#ifdef CONFIG_GRKERNSEC_ACL_HIDEKERN
72333+ task->acl->mode &= ~GR_PROCFIND;
72334+#endif
72335+ }
72336+ } while_each_thread(task2, task);
72337+
72338+ memcpy(reload_state->oldpolicy_ptr, &reload_state->newpolicy, sizeof(struct gr_policy_state));
72339+ memcpy(reload_state->oldalloc_ptr, &reload_state->newalloc, sizeof(struct gr_alloc_state));
72340+
72341+out:
72342+
72343+ return ret;
72344+}
72345+
72346+static int gracl_reload(struct gr_arg *args, unsigned char oldmode)
72347+{
72348+ struct gr_reload_state new_reload_state = { };
72349+ int err;
72350+
72351+ new_reload_state.oldpolicy_ptr = polstate;
72352+ new_reload_state.oldalloc_ptr = current_alloc_state;
72353+ new_reload_state.oldmode = oldmode;
72354+
72355+ current_alloc_state = &new_reload_state.newalloc;
72356+ polstate = &new_reload_state.newpolicy;
72357+
72358+ /* everything relevant is now saved off, copy in the new policy */
72359+ if (init_variables(args, true)) {
72360+ gr_log_str(GR_DONT_AUDIT_GOOD, GR_INITF_ACL_MSG, GR_VERSION);
72361+ err = -ENOMEM;
72362+ goto error;
72363+ }
72364+
72365+ err = copy_user_acl(args);
72366+ free_init_variables();
72367+ if (err)
72368+ goto error;
72369+ /* the new policy is copied in, with the old policy available via saved_state
72370+ first go through applying roles, making sure to preserve special roles
72371+ then apply new subjects, making sure to preserve inherited and nested subjects,
72372+ though currently only inherited subjects will be preserved
72373+ */
72374+ err = stop_machine(gracl_reload_apply_policies, &new_reload_state, NULL);
72375+ if (err)
72376+ goto error;
72377+
72378+ /* we've now applied the new policy, so restore the old policy state to free it */
72379+ polstate = &new_reload_state.oldpolicy;
72380+ current_alloc_state = &new_reload_state.oldalloc;
72381+ free_variables(true);
72382+
72383+ /* oldpolicy/oldalloc_ptr point to the new policy/alloc states as they were copied
72384+ to running_polstate/current_alloc_state inside stop_machine
72385+ */
72386+ err = 0;
72387+ goto out;
72388+error:
72389+ /* on error of loading the new policy, we'll just keep the previous
72390+ policy set around
72391+ */
72392+ free_variables(true);
72393+
72394+ /* doesn't affect runtime, but maintains consistent state */
72395+out:
72396+ polstate = new_reload_state.oldpolicy_ptr;
72397+ current_alloc_state = new_reload_state.oldalloc_ptr;
72398+
72399+ return err;
72400+}
72401+
72402+static int
72403+gracl_init(struct gr_arg *args)
72404+{
72405+ int error = 0;
72406+
72407+ memcpy(&gr_system_salt, args->salt, sizeof(gr_system_salt));
72408+ memcpy(&gr_system_sum, args->sum, sizeof(gr_system_sum));
72409+
72410+ if (init_variables(args, false)) {
72411+ gr_log_str(GR_DONT_AUDIT_GOOD, GR_INITF_ACL_MSG, GR_VERSION);
72412+ error = -ENOMEM;
72413+ goto out;
72414+ }
72415+
72416+ error = copy_user_acl(args);
72417+ free_init_variables();
72418+ if (error)
72419+ goto out;
72420+
72421+ error = gr_set_acls(0);
72422+ if (error)
72423+ goto out;
72424+
72425+ gr_enable_rbac_system();
72426+
72427+ return 0;
72428+
72429+out:
72430+ free_variables(false);
72431+ return error;
72432+}
72433+
72434+static int
72435+lookup_special_role_auth(__u16 mode, const char *rolename, unsigned char **salt,
72436+ unsigned char **sum)
72437+{
72438+ struct acl_role_label *r;
72439+ struct role_allowed_ip *ipp;
72440+ struct role_transition *trans;
72441+ unsigned int i;
72442+ int found = 0;
72443+ u32 curr_ip = current->signal->curr_ip;
72444+
72445+ current->signal->saved_ip = curr_ip;
72446+
72447+ /* check transition table */
72448+
72449+ for (trans = current->role->transitions; trans; trans = trans->next) {
72450+ if (!strcmp(rolename, trans->rolename)) {
72451+ found = 1;
72452+ break;
72453+ }
72454+ }
72455+
72456+ if (!found)
72457+ return 0;
72458+
72459+ /* handle special roles that do not require authentication
72460+ and check ip */
72461+
72462+ FOR_EACH_ROLE_START(r)
72463+ if (!strcmp(rolename, r->rolename) &&
72464+ (r->roletype & GR_ROLE_SPECIAL)) {
72465+ found = 0;
72466+ if (r->allowed_ips != NULL) {
72467+ for (ipp = r->allowed_ips; ipp; ipp = ipp->next) {
72468+ if ((ntohl(curr_ip) & ipp->netmask) ==
72469+ (ntohl(ipp->addr) & ipp->netmask))
72470+ found = 1;
72471+ }
72472+ } else
72473+ found = 2;
72474+ if (!found)
72475+ return 0;
72476+
72477+ if (((mode == GR_SPROLE) && (r->roletype & GR_ROLE_NOPW)) ||
72478+ ((mode == GR_SPROLEPAM) && (r->roletype & GR_ROLE_PAM))) {
72479+ *salt = NULL;
72480+ *sum = NULL;
72481+ return 1;
72482+ }
72483+ }
72484+ FOR_EACH_ROLE_END(r)
72485+
72486+ for (i = 0; i < polstate->num_sprole_pws; i++) {
72487+ if (!strcmp(rolename, polstate->acl_special_roles[i]->rolename)) {
72488+ *salt = polstate->acl_special_roles[i]->salt;
72489+ *sum = polstate->acl_special_roles[i]->sum;
72490+ return 1;
72491+ }
72492+ }
72493+
72494+ return 0;
72495+}
72496+
72497+int gr_check_secure_terminal(struct task_struct *task)
72498+{
72499+ struct task_struct *p, *p2, *p3;
72500+ struct files_struct *files;
72501+ struct fdtable *fdt;
72502+ struct file *our_file = NULL, *file;
72503+ int i;
72504+
72505+ if (task->signal->tty == NULL)
72506+ return 1;
72507+
72508+ files = get_files_struct(task);
72509+ if (files != NULL) {
72510+ rcu_read_lock();
72511+ fdt = files_fdtable(files);
72512+ for (i=0; i < fdt->max_fds; i++) {
72513+ file = fcheck_files(files, i);
72514+ if (file && (our_file == NULL) && (file->private_data == task->signal->tty)) {
72515+ get_file(file);
72516+ our_file = file;
72517+ }
72518+ }
72519+ rcu_read_unlock();
72520+ put_files_struct(files);
72521+ }
72522+
72523+ if (our_file == NULL)
72524+ return 1;
72525+
72526+ read_lock(&tasklist_lock);
72527+ do_each_thread(p2, p) {
72528+ files = get_files_struct(p);
72529+ if (files == NULL ||
72530+ (p->signal && p->signal->tty == task->signal->tty)) {
72531+ if (files != NULL)
72532+ put_files_struct(files);
72533+ continue;
72534+ }
72535+ rcu_read_lock();
72536+ fdt = files_fdtable(files);
72537+ for (i=0; i < fdt->max_fds; i++) {
72538+ file = fcheck_files(files, i);
72539+ if (file && S_ISCHR(file->f_path.dentry->d_inode->i_mode) &&
72540+ file->f_path.dentry->d_inode->i_rdev == our_file->f_path.dentry->d_inode->i_rdev) {
72541+ p3 = task;
72542+ while (task_pid_nr(p3) > 0) {
72543+ if (p3 == p)
72544+ break;
72545+ p3 = p3->real_parent;
72546+ }
72547+ if (p3 == p)
72548+ break;
72549+ gr_log_ttysniff(GR_DONT_AUDIT_GOOD, GR_TTYSNIFF_ACL_MSG, p);
72550+ gr_handle_alertkill(p);
72551+ rcu_read_unlock();
72552+ put_files_struct(files);
72553+ read_unlock(&tasklist_lock);
72554+ fput(our_file);
72555+ return 0;
72556+ }
72557+ }
72558+ rcu_read_unlock();
72559+ put_files_struct(files);
72560+ } while_each_thread(p2, p);
72561+ read_unlock(&tasklist_lock);
72562+
72563+ fput(our_file);
72564+ return 1;
72565+}
72566+
72567+ssize_t
72568+write_grsec_handler(struct file *file, const char __user * buf, size_t count, loff_t *ppos)
72569+{
72570+ struct gr_arg_wrapper uwrap;
72571+ unsigned char *sprole_salt = NULL;
72572+ unsigned char *sprole_sum = NULL;
72573+ int error = 0;
72574+ int error2 = 0;
72575+ size_t req_count = 0;
72576+ unsigned char oldmode = 0;
72577+
72578+ mutex_lock(&gr_dev_mutex);
72579+
72580+ if (gr_acl_is_enabled() && !(current->acl->mode & GR_KERNELAUTH)) {
72581+ error = -EPERM;
72582+ goto out;
72583+ }
72584+
72585+#ifdef CONFIG_COMPAT
72586+ pax_open_kernel();
72587+ if (is_compat_task()) {
72588+ copy_gr_arg_wrapper = &copy_gr_arg_wrapper_compat;
72589+ copy_gr_arg = &copy_gr_arg_compat;
72590+ copy_acl_object_label = &copy_acl_object_label_compat;
72591+ copy_acl_subject_label = &copy_acl_subject_label_compat;
72592+ copy_acl_role_label = &copy_acl_role_label_compat;
72593+ copy_acl_ip_label = &copy_acl_ip_label_compat;
72594+ copy_role_allowed_ip = &copy_role_allowed_ip_compat;
72595+ copy_role_transition = &copy_role_transition_compat;
72596+ copy_sprole_pw = &copy_sprole_pw_compat;
72597+ copy_gr_hash_struct = &copy_gr_hash_struct_compat;
72598+ copy_pointer_from_array = &copy_pointer_from_array_compat;
72599+ get_gr_arg_wrapper_size = &get_gr_arg_wrapper_size_compat;
72600+ } else {
72601+ copy_gr_arg_wrapper = &copy_gr_arg_wrapper_normal;
72602+ copy_gr_arg = &copy_gr_arg_normal;
72603+ copy_acl_object_label = &copy_acl_object_label_normal;
72604+ copy_acl_subject_label = &copy_acl_subject_label_normal;
72605+ copy_acl_role_label = &copy_acl_role_label_normal;
72606+ copy_acl_ip_label = &copy_acl_ip_label_normal;
72607+ copy_role_allowed_ip = &copy_role_allowed_ip_normal;
72608+ copy_role_transition = &copy_role_transition_normal;
72609+ copy_sprole_pw = &copy_sprole_pw_normal;
72610+ copy_gr_hash_struct = &copy_gr_hash_struct_normal;
72611+ copy_pointer_from_array = &copy_pointer_from_array_normal;
72612+ get_gr_arg_wrapper_size = &get_gr_arg_wrapper_size_normal;
72613+ }
72614+ pax_close_kernel();
72615+#endif
72616+
72617+ req_count = get_gr_arg_wrapper_size();
72618+
72619+ if (count != req_count) {
72620+ gr_log_int_int(GR_DONT_AUDIT_GOOD, GR_DEV_ACL_MSG, (int)count, (int)req_count);
72621+ error = -EINVAL;
72622+ goto out;
72623+ }
72624+
72625+
72626+ if (gr_auth_expires && time_after_eq(get_seconds(), gr_auth_expires)) {
72627+ gr_auth_expires = 0;
72628+ gr_auth_attempts = 0;
72629+ }
72630+
72631+ error = copy_gr_arg_wrapper(buf, &uwrap);
72632+ if (error)
72633+ goto out;
72634+
72635+ error = copy_gr_arg(uwrap.arg, &gr_usermode);
72636+ if (error)
72637+ goto out;
72638+
72639+ if (gr_usermode.mode != GR_SPROLE && gr_usermode.mode != GR_SPROLEPAM &&
72640+ gr_auth_attempts >= CONFIG_GRKERNSEC_ACL_MAXTRIES &&
72641+ time_after(gr_auth_expires, get_seconds())) {
72642+ error = -EBUSY;
72643+ goto out;
72644+ }
72645+
72646+ /* if non-root trying to do anything other than use a special role,
72647+ do not attempt authentication, do not count towards authentication
72648+ locking
72649+ */
72650+
72651+ if (gr_usermode.mode != GR_SPROLE && gr_usermode.mode != GR_STATUS &&
72652+ gr_usermode.mode != GR_UNSPROLE && gr_usermode.mode != GR_SPROLEPAM &&
72653+ gr_is_global_nonroot(current_uid())) {
72654+ error = -EPERM;
72655+ goto out;
72656+ }
72657+
72658+ /* ensure pw and special role name are null terminated */
72659+
72660+ gr_usermode.pw[GR_PW_LEN - 1] = '\0';
72661+ gr_usermode.sp_role[GR_SPROLE_LEN - 1] = '\0';
72662+
72663+ /* Okay.
72664+ * We have our enough of the argument structure..(we have yet
72665+ * to copy_from_user the tables themselves) . Copy the tables
72666+ * only if we need them, i.e. for loading operations. */
72667+
72668+ switch (gr_usermode.mode) {
72669+ case GR_STATUS:
72670+ if (gr_acl_is_enabled()) {
72671+ error = 1;
72672+ if (!gr_check_secure_terminal(current))
72673+ error = 3;
72674+ } else
72675+ error = 2;
72676+ goto out;
72677+ case GR_SHUTDOWN:
72678+ if (gr_acl_is_enabled() && !(chkpw(&gr_usermode, (unsigned char *)&gr_system_salt, (unsigned char *)&gr_system_sum))) {
72679+ stop_machine(gr_rbac_disable, NULL, NULL);
72680+ free_variables(false);
72681+ memset(&gr_usermode, 0, sizeof(gr_usermode));
72682+ memset(&gr_system_salt, 0, sizeof(gr_system_salt));
72683+ memset(&gr_system_sum, 0, sizeof(gr_system_sum));
72684+ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SHUTS_ACL_MSG);
72685+ } else if (gr_acl_is_enabled()) {
72686+ gr_log_noargs(GR_DONT_AUDIT, GR_SHUTF_ACL_MSG);
72687+ error = -EPERM;
72688+ } else {
72689+ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SHUTI_ACL_MSG);
72690+ error = -EAGAIN;
72691+ }
72692+ break;
72693+ case GR_ENABLE:
72694+ if (!gr_acl_is_enabled() && !(error2 = gracl_init(&gr_usermode)))
72695+ gr_log_str(GR_DONT_AUDIT_GOOD, GR_ENABLE_ACL_MSG, GR_VERSION);
72696+ else {
72697+ if (gr_acl_is_enabled())
72698+ error = -EAGAIN;
72699+ else
72700+ error = error2;
72701+ gr_log_str(GR_DONT_AUDIT, GR_ENABLEF_ACL_MSG, GR_VERSION);
72702+ }
72703+ break;
72704+ case GR_OLDRELOAD:
72705+ oldmode = 1;
72706+ case GR_RELOAD:
72707+ if (!gr_acl_is_enabled()) {
72708+ gr_log_str(GR_DONT_AUDIT_GOOD, GR_RELOADI_ACL_MSG, GR_VERSION);
72709+ error = -EAGAIN;
72710+ } else if (!(chkpw(&gr_usermode, (unsigned char *)&gr_system_salt, (unsigned char *)&gr_system_sum))) {
72711+ error2 = gracl_reload(&gr_usermode, oldmode);
72712+ if (!error2)
72713+ gr_log_str(GR_DONT_AUDIT_GOOD, GR_RELOAD_ACL_MSG, GR_VERSION);
72714+ else {
72715+ gr_log_str(GR_DONT_AUDIT, GR_RELOADF_ACL_MSG, GR_VERSION);
72716+ error = error2;
72717+ }
72718+ } else {
72719+ gr_log_str(GR_DONT_AUDIT, GR_RELOADF_ACL_MSG, GR_VERSION);
72720+ error = -EPERM;
72721+ }
72722+ break;
72723+ case GR_SEGVMOD:
72724+ if (unlikely(!gr_acl_is_enabled())) {
72725+ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SEGVMODI_ACL_MSG);
72726+ error = -EAGAIN;
72727+ break;
72728+ }
72729+
72730+ if (!(chkpw(&gr_usermode, (unsigned char *)&gr_system_salt, (unsigned char *)&gr_system_sum))) {
72731+ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SEGVMODS_ACL_MSG);
72732+ if (gr_usermode.segv_device && gr_usermode.segv_inode) {
72733+ struct acl_subject_label *segvacl;
72734+ segvacl =
72735+ lookup_acl_subj_label(gr_usermode.segv_inode,
72736+ gr_usermode.segv_device,
72737+ current->role);
72738+ if (segvacl) {
72739+ segvacl->crashes = 0;
72740+ segvacl->expires = 0;
72741+ }
72742+ } else if (gr_find_uid(gr_usermode.segv_uid) >= 0) {
72743+ gr_remove_uid(gr_usermode.segv_uid);
72744+ }
72745+ } else {
72746+ gr_log_noargs(GR_DONT_AUDIT, GR_SEGVMODF_ACL_MSG);
72747+ error = -EPERM;
72748+ }
72749+ break;
72750+ case GR_SPROLE:
72751+ case GR_SPROLEPAM:
72752+ if (unlikely(!gr_acl_is_enabled())) {
72753+ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_SPROLEI_ACL_MSG);
72754+ error = -EAGAIN;
72755+ break;
72756+ }
72757+
72758+ if (current->role->expires && time_after_eq(get_seconds(), current->role->expires)) {
72759+ current->role->expires = 0;
72760+ current->role->auth_attempts = 0;
72761+ }
72762+
72763+ if (current->role->auth_attempts >= CONFIG_GRKERNSEC_ACL_MAXTRIES &&
72764+ time_after(current->role->expires, get_seconds())) {
72765+ error = -EBUSY;
72766+ goto out;
72767+ }
72768+
72769+ if (lookup_special_role_auth
72770+ (gr_usermode.mode, gr_usermode.sp_role, &sprole_salt, &sprole_sum)
72771+ && ((!sprole_salt && !sprole_sum)
72772+ || !(chkpw(&gr_usermode, sprole_salt, sprole_sum)))) {
72773+ char *p = "";
72774+ assign_special_role(gr_usermode.sp_role);
72775+ read_lock(&tasklist_lock);
72776+ if (current->real_parent)
72777+ p = current->real_parent->role->rolename;
72778+ read_unlock(&tasklist_lock);
72779+ gr_log_str_int(GR_DONT_AUDIT_GOOD, GR_SPROLES_ACL_MSG,
72780+ p, acl_sp_role_value);
72781+ } else {
72782+ gr_log_str(GR_DONT_AUDIT, GR_SPROLEF_ACL_MSG, gr_usermode.sp_role);
72783+ error = -EPERM;
72784+ if(!(current->role->auth_attempts++))
72785+ current->role->expires = get_seconds() + CONFIG_GRKERNSEC_ACL_TIMEOUT;
72786+
72787+ goto out;
72788+ }
72789+ break;
72790+ case GR_UNSPROLE:
72791+ if (unlikely(!gr_acl_is_enabled())) {
72792+ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_UNSPROLEI_ACL_MSG);
72793+ error = -EAGAIN;
72794+ break;
72795+ }
72796+
72797+ if (current->role->roletype & GR_ROLE_SPECIAL) {
72798+ char *p = "";
72799+ int i = 0;
72800+
72801+ read_lock(&tasklist_lock);
72802+ if (current->real_parent) {
72803+ p = current->real_parent->role->rolename;
72804+ i = current->real_parent->acl_role_id;
72805+ }
72806+ read_unlock(&tasklist_lock);
72807+
72808+ gr_log_str_int(GR_DONT_AUDIT_GOOD, GR_UNSPROLES_ACL_MSG, p, i);
72809+ gr_set_acls(1);
72810+ } else {
72811+ error = -EPERM;
72812+ goto out;
72813+ }
72814+ break;
72815+ default:
72816+ gr_log_int(GR_DONT_AUDIT, GR_INVMODE_ACL_MSG, gr_usermode.mode);
72817+ error = -EINVAL;
72818+ break;
72819+ }
72820+
72821+ if (error != -EPERM)
72822+ goto out;
72823+
72824+ if(!(gr_auth_attempts++))
72825+ gr_auth_expires = get_seconds() + CONFIG_GRKERNSEC_ACL_TIMEOUT;
72826+
72827+ out:
72828+ mutex_unlock(&gr_dev_mutex);
72829+
72830+ if (!error)
72831+ error = req_count;
72832+
72833+ return error;
72834+}
72835+
72836+int
72837+gr_set_acls(const int type)
72838+{
72839+ struct task_struct *task, *task2;
72840+ struct acl_role_label *role = current->role;
72841+ struct acl_subject_label *subj;
72842+ __u16 acl_role_id = current->acl_role_id;
72843+ const struct cred *cred;
72844+ int ret;
72845+
72846+ rcu_read_lock();
72847+ read_lock(&tasklist_lock);
72848+ read_lock(&grsec_exec_file_lock);
72849+ do_each_thread(task2, task) {
72850+ /* check to see if we're called from the exit handler,
72851+ if so, only replace ACLs that have inherited the admin
72852+ ACL */
72853+
72854+ if (type && (task->role != role ||
72855+ task->acl_role_id != acl_role_id))
72856+ continue;
72857+
72858+ task->acl_role_id = 0;
72859+ task->acl_sp_role = 0;
72860+ task->inherited = 0;
72861+
72862+ if (task->exec_file) {
72863+ cred = __task_cred(task);
72864+ task->role = __lookup_acl_role_label(polstate, task, GR_GLOBAL_UID(cred->uid), GR_GLOBAL_GID(cred->gid));
72865+ subj = __gr_get_subject_for_task(polstate, task, NULL);
72866+ if (subj == NULL) {
72867+ ret = -EINVAL;
72868+ read_unlock(&grsec_exec_file_lock);
72869+ read_unlock(&tasklist_lock);
72870+ rcu_read_unlock();
72871+ gr_log_str_int(GR_DONT_AUDIT_GOOD, GR_DEFACL_MSG, task->comm, task_pid_nr(task));
72872+ return ret;
72873+ }
72874+ __gr_apply_subject_to_task(polstate, task, subj);
72875+ } else {
72876+ // it's a kernel process
72877+ task->role = polstate->kernel_role;
72878+ task->acl = polstate->kernel_role->root_label;
72879+#ifdef CONFIG_GRKERNSEC_ACL_HIDEKERN
72880+ task->acl->mode &= ~GR_PROCFIND;
72881+#endif
72882+ }
72883+ } while_each_thread(task2, task);
72884+ read_unlock(&grsec_exec_file_lock);
72885+ read_unlock(&tasklist_lock);
72886+ rcu_read_unlock();
72887+
72888+ return 0;
72889+}
72890diff --git a/grsecurity/gracl_res.c b/grsecurity/gracl_res.c
72891new file mode 100644
72892index 0000000..39645c9
72893--- /dev/null
72894+++ b/grsecurity/gracl_res.c
72895@@ -0,0 +1,68 @@
72896+#include <linux/kernel.h>
72897+#include <linux/sched.h>
72898+#include <linux/gracl.h>
72899+#include <linux/grinternal.h>
72900+
72901+static const char *restab_log[] = {
72902+ [RLIMIT_CPU] = "RLIMIT_CPU",
72903+ [RLIMIT_FSIZE] = "RLIMIT_FSIZE",
72904+ [RLIMIT_DATA] = "RLIMIT_DATA",
72905+ [RLIMIT_STACK] = "RLIMIT_STACK",
72906+ [RLIMIT_CORE] = "RLIMIT_CORE",
72907+ [RLIMIT_RSS] = "RLIMIT_RSS",
72908+ [RLIMIT_NPROC] = "RLIMIT_NPROC",
72909+ [RLIMIT_NOFILE] = "RLIMIT_NOFILE",
72910+ [RLIMIT_MEMLOCK] = "RLIMIT_MEMLOCK",
72911+ [RLIMIT_AS] = "RLIMIT_AS",
72912+ [RLIMIT_LOCKS] = "RLIMIT_LOCKS",
72913+ [RLIMIT_SIGPENDING] = "RLIMIT_SIGPENDING",
72914+ [RLIMIT_MSGQUEUE] = "RLIMIT_MSGQUEUE",
72915+ [RLIMIT_NICE] = "RLIMIT_NICE",
72916+ [RLIMIT_RTPRIO] = "RLIMIT_RTPRIO",
72917+ [RLIMIT_RTTIME] = "RLIMIT_RTTIME",
72918+ [GR_CRASH_RES] = "RLIMIT_CRASH"
72919+};
72920+
72921+void
72922+gr_log_resource(const struct task_struct *task,
72923+ const int res, const unsigned long wanted, const int gt)
72924+{
72925+ const struct cred *cred;
72926+ unsigned long rlim;
72927+
72928+ if (!gr_acl_is_enabled() && !grsec_resource_logging)
72929+ return;
72930+
72931+ // not yet supported resource
72932+ if (unlikely(!restab_log[res]))
72933+ return;
72934+
72935+ if (res == RLIMIT_CPU || res == RLIMIT_RTTIME)
72936+ rlim = task_rlimit_max(task, res);
72937+ else
72938+ rlim = task_rlimit(task, res);
72939+
72940+ if (likely((rlim == RLIM_INFINITY) || (gt && wanted <= rlim) || (!gt && wanted < rlim)))
72941+ return;
72942+
72943+ rcu_read_lock();
72944+ cred = __task_cred(task);
72945+
72946+ if (res == RLIMIT_NPROC &&
72947+ (cap_raised(cred->cap_effective, CAP_SYS_ADMIN) ||
72948+ cap_raised(cred->cap_effective, CAP_SYS_RESOURCE)))
72949+ goto out_rcu_unlock;
72950+ else if (res == RLIMIT_MEMLOCK &&
72951+ cap_raised(cred->cap_effective, CAP_IPC_LOCK))
72952+ goto out_rcu_unlock;
72953+ else if (res == RLIMIT_NICE && cap_raised(cred->cap_effective, CAP_SYS_NICE))
72954+ goto out_rcu_unlock;
72955+ rcu_read_unlock();
72956+
72957+ gr_log_res_ulong2_str(GR_DONT_AUDIT, GR_RESOURCE_MSG, task, wanted, restab_log[res], rlim);
72958+
72959+ return;
72960+out_rcu_unlock:
72961+ rcu_read_unlock();
72962+ return;
72963+}
72964diff --git a/grsecurity/gracl_segv.c b/grsecurity/gracl_segv.c
72965new file mode 100644
72966index 0000000..2040e61
72967--- /dev/null
72968+++ b/grsecurity/gracl_segv.c
72969@@ -0,0 +1,313 @@
72970+#include <linux/kernel.h>
72971+#include <linux/mm.h>
72972+#include <asm/uaccess.h>
72973+#include <asm/errno.h>
72974+#include <asm/mman.h>
72975+#include <net/sock.h>
72976+#include <linux/file.h>
72977+#include <linux/fs.h>
72978+#include <linux/net.h>
72979+#include <linux/in.h>
72980+#include <linux/slab.h>
72981+#include <linux/types.h>
72982+#include <linux/sched.h>
72983+#include <linux/timer.h>
72984+#include <linux/gracl.h>
72985+#include <linux/grsecurity.h>
72986+#include <linux/grinternal.h>
72987+#if defined(CONFIG_BTRFS_FS) || defined(CONFIG_BTRFS_FS_MODULE)
72988+#include <linux/magic.h>
72989+#include <linux/pagemap.h>
72990+#include "../fs/btrfs/async-thread.h"
72991+#include "../fs/btrfs/ctree.h"
72992+#include "../fs/btrfs/btrfs_inode.h"
72993+#endif
72994+
72995+static struct crash_uid *uid_set;
72996+static unsigned short uid_used;
72997+static DEFINE_SPINLOCK(gr_uid_lock);
72998+extern rwlock_t gr_inode_lock;
72999+extern struct acl_subject_label *
73000+ lookup_acl_subj_label(const ino_t inode, const dev_t dev,
73001+ struct acl_role_label *role);
73002+
73003+static inline dev_t __get_dev(const struct dentry *dentry)
73004+{
73005+#if defined(CONFIG_BTRFS_FS) || defined(CONFIG_BTRFS_FS_MODULE)
73006+ if (dentry->d_sb->s_magic == BTRFS_SUPER_MAGIC)
73007+ return BTRFS_I(dentry->d_inode)->root->anon_dev;
73008+ else
73009+#endif
73010+ return dentry->d_sb->s_dev;
73011+}
73012+
73013+int
73014+gr_init_uidset(void)
73015+{
73016+ uid_set =
73017+ kmalloc(GR_UIDTABLE_MAX * sizeof (struct crash_uid), GFP_KERNEL);
73018+ uid_used = 0;
73019+
73020+ return uid_set ? 1 : 0;
73021+}
73022+
73023+void
73024+gr_free_uidset(void)
73025+{
73026+ if (uid_set) {
73027+ struct crash_uid *tmpset;
73028+ spin_lock(&gr_uid_lock);
73029+ tmpset = uid_set;
73030+ uid_set = NULL;
73031+ uid_used = 0;
73032+ spin_unlock(&gr_uid_lock);
73033+ if (tmpset)
73034+ kfree(tmpset);
73035+ }
73036+
73037+ return;
73038+}
73039+
73040+int
73041+gr_find_uid(const uid_t uid)
73042+{
73043+ struct crash_uid *tmp = uid_set;
73044+ uid_t buid;
73045+ int low = 0, high = uid_used - 1, mid;
73046+
73047+ while (high >= low) {
73048+ mid = (low + high) >> 1;
73049+ buid = tmp[mid].uid;
73050+ if (buid == uid)
73051+ return mid;
73052+ if (buid > uid)
73053+ high = mid - 1;
73054+ if (buid < uid)
73055+ low = mid + 1;
73056+ }
73057+
73058+ return -1;
73059+}
73060+
73061+static __inline__ void
73062+gr_insertsort(void)
73063+{
73064+ unsigned short i, j;
73065+ struct crash_uid index;
73066+
73067+ for (i = 1; i < uid_used; i++) {
73068+ index = uid_set[i];
73069+ j = i;
73070+ while ((j > 0) && uid_set[j - 1].uid > index.uid) {
73071+ uid_set[j] = uid_set[j - 1];
73072+ j--;
73073+ }
73074+ uid_set[j] = index;
73075+ }
73076+
73077+ return;
73078+}
73079+
73080+static __inline__ void
73081+gr_insert_uid(const kuid_t kuid, const unsigned long expires)
73082+{
73083+ int loc;
73084+ uid_t uid = GR_GLOBAL_UID(kuid);
73085+
73086+ if (uid_used == GR_UIDTABLE_MAX)
73087+ return;
73088+
73089+ loc = gr_find_uid(uid);
73090+
73091+ if (loc >= 0) {
73092+ uid_set[loc].expires = expires;
73093+ return;
73094+ }
73095+
73096+ uid_set[uid_used].uid = uid;
73097+ uid_set[uid_used].expires = expires;
73098+ uid_used++;
73099+
73100+ gr_insertsort();
73101+
73102+ return;
73103+}
73104+
73105+void
73106+gr_remove_uid(const unsigned short loc)
73107+{
73108+ unsigned short i;
73109+
73110+ for (i = loc + 1; i < uid_used; i++)
73111+ uid_set[i - 1] = uid_set[i];
73112+
73113+ uid_used--;
73114+
73115+ return;
73116+}
73117+
73118+int
73119+gr_check_crash_uid(const kuid_t kuid)
73120+{
73121+ int loc;
73122+ int ret = 0;
73123+ uid_t uid;
73124+
73125+ if (unlikely(!gr_acl_is_enabled()))
73126+ return 0;
73127+
73128+ uid = GR_GLOBAL_UID(kuid);
73129+
73130+ spin_lock(&gr_uid_lock);
73131+ loc = gr_find_uid(uid);
73132+
73133+ if (loc < 0)
73134+ goto out_unlock;
73135+
73136+ if (time_before_eq(uid_set[loc].expires, get_seconds()))
73137+ gr_remove_uid(loc);
73138+ else
73139+ ret = 1;
73140+
73141+out_unlock:
73142+ spin_unlock(&gr_uid_lock);
73143+ return ret;
73144+}
73145+
73146+static __inline__ int
73147+proc_is_setxid(const struct cred *cred)
73148+{
73149+ if (!uid_eq(cred->uid, cred->euid) || !uid_eq(cred->uid, cred->suid) ||
73150+ !uid_eq(cred->uid, cred->fsuid))
73151+ return 1;
73152+ if (!gid_eq(cred->gid, cred->egid) || !gid_eq(cred->gid, cred->sgid) ||
73153+ !gid_eq(cred->gid, cred->fsgid))
73154+ return 1;
73155+
73156+ return 0;
73157+}
73158+
73159+extern int gr_fake_force_sig(int sig, struct task_struct *t);
73160+
73161+void
73162+gr_handle_crash(struct task_struct *task, const int sig)
73163+{
73164+ struct acl_subject_label *curr;
73165+ struct task_struct *tsk, *tsk2;
73166+ const struct cred *cred;
73167+ const struct cred *cred2;
73168+
73169+ if (sig != SIGSEGV && sig != SIGKILL && sig != SIGBUS && sig != SIGILL)
73170+ return;
73171+
73172+ if (unlikely(!gr_acl_is_enabled()))
73173+ return;
73174+
73175+ curr = task->acl;
73176+
73177+ if (!(curr->resmask & (1U << GR_CRASH_RES)))
73178+ return;
73179+
73180+ if (time_before_eq(curr->expires, get_seconds())) {
73181+ curr->expires = 0;
73182+ curr->crashes = 0;
73183+ }
73184+
73185+ curr->crashes++;
73186+
73187+ if (!curr->expires)
73188+ curr->expires = get_seconds() + curr->res[GR_CRASH_RES].rlim_max;
73189+
73190+ if ((curr->crashes >= curr->res[GR_CRASH_RES].rlim_cur) &&
73191+ time_after(curr->expires, get_seconds())) {
73192+ rcu_read_lock();
73193+ cred = __task_cred(task);
73194+ if (gr_is_global_nonroot(cred->uid) && proc_is_setxid(cred)) {
73195+ gr_log_crash1(GR_DONT_AUDIT, GR_SEGVSTART_ACL_MSG, task, curr->res[GR_CRASH_RES].rlim_max);
73196+ spin_lock(&gr_uid_lock);
73197+ gr_insert_uid(cred->uid, curr->expires);
73198+ spin_unlock(&gr_uid_lock);
73199+ curr->expires = 0;
73200+ curr->crashes = 0;
73201+ read_lock(&tasklist_lock);
73202+ do_each_thread(tsk2, tsk) {
73203+ cred2 = __task_cred(tsk);
73204+ if (tsk != task && uid_eq(cred2->uid, cred->uid))
73205+ gr_fake_force_sig(SIGKILL, tsk);
73206+ } while_each_thread(tsk2, tsk);
73207+ read_unlock(&tasklist_lock);
73208+ } else {
73209+ gr_log_crash2(GR_DONT_AUDIT, GR_SEGVNOSUID_ACL_MSG, task, curr->res[GR_CRASH_RES].rlim_max);
73210+ read_lock(&tasklist_lock);
73211+ read_lock(&grsec_exec_file_lock);
73212+ do_each_thread(tsk2, tsk) {
73213+ if (likely(tsk != task)) {
73214+ // if this thread has the same subject as the one that triggered
73215+ // RES_CRASH and it's the same binary, kill it
73216+ if (tsk->acl == task->acl && gr_is_same_file(tsk->exec_file, task->exec_file))
73217+ gr_fake_force_sig(SIGKILL, tsk);
73218+ }
73219+ } while_each_thread(tsk2, tsk);
73220+ read_unlock(&grsec_exec_file_lock);
73221+ read_unlock(&tasklist_lock);
73222+ }
73223+ rcu_read_unlock();
73224+ }
73225+
73226+ return;
73227+}
73228+
73229+int
73230+gr_check_crash_exec(const struct file *filp)
73231+{
73232+ struct acl_subject_label *curr;
73233+
73234+ if (unlikely(!gr_acl_is_enabled()))
73235+ return 0;
73236+
73237+ read_lock(&gr_inode_lock);
73238+ curr = lookup_acl_subj_label(filp->f_path.dentry->d_inode->i_ino,
73239+ __get_dev(filp->f_path.dentry),
73240+ current->role);
73241+ read_unlock(&gr_inode_lock);
73242+
73243+ if (!curr || !(curr->resmask & (1U << GR_CRASH_RES)) ||
73244+ (!curr->crashes && !curr->expires))
73245+ return 0;
73246+
73247+ if ((curr->crashes >= curr->res[GR_CRASH_RES].rlim_cur) &&
73248+ time_after(curr->expires, get_seconds()))
73249+ return 1;
73250+ else if (time_before_eq(curr->expires, get_seconds())) {
73251+ curr->crashes = 0;
73252+ curr->expires = 0;
73253+ }
73254+
73255+ return 0;
73256+}
73257+
73258+void
73259+gr_handle_alertkill(struct task_struct *task)
73260+{
73261+ struct acl_subject_label *curracl;
73262+ __u32 curr_ip;
73263+ struct task_struct *p, *p2;
73264+
73265+ if (unlikely(!gr_acl_is_enabled()))
73266+ return;
73267+
73268+ curracl = task->acl;
73269+ curr_ip = task->signal->curr_ip;
73270+
73271+ if ((curracl->mode & GR_KILLIPPROC) && curr_ip) {
73272+ read_lock(&tasklist_lock);
73273+ do_each_thread(p2, p) {
73274+ if (p->signal->curr_ip == curr_ip)
73275+ gr_fake_force_sig(SIGKILL, p);
73276+ } while_each_thread(p2, p);
73277+ read_unlock(&tasklist_lock);
73278+ } else if (curracl->mode & GR_KILLPROC)
73279+ gr_fake_force_sig(SIGKILL, task);
73280+
73281+ return;
73282+}
73283diff --git a/grsecurity/gracl_shm.c b/grsecurity/gracl_shm.c
73284new file mode 100644
73285index 0000000..98011b0
73286--- /dev/null
73287+++ b/grsecurity/gracl_shm.c
73288@@ -0,0 +1,40 @@
73289+#include <linux/kernel.h>
73290+#include <linux/mm.h>
73291+#include <linux/sched.h>
73292+#include <linux/file.h>
73293+#include <linux/ipc.h>
73294+#include <linux/gracl.h>
73295+#include <linux/grsecurity.h>
73296+#include <linux/grinternal.h>
73297+
73298+int
73299+gr_handle_shmat(const pid_t shm_cprid, const pid_t shm_lapid,
73300+ const time_t shm_createtime, const kuid_t cuid, const int shmid)
73301+{
73302+ struct task_struct *task;
73303+
73304+ if (!gr_acl_is_enabled())
73305+ return 1;
73306+
73307+ rcu_read_lock();
73308+ read_lock(&tasklist_lock);
73309+
73310+ task = find_task_by_vpid(shm_cprid);
73311+
73312+ if (unlikely(!task))
73313+ task = find_task_by_vpid(shm_lapid);
73314+
73315+ if (unlikely(task && (time_before_eq((unsigned long)task->start_time.tv_sec, (unsigned long)shm_createtime) ||
73316+ (task_pid_nr(task) == shm_lapid)) &&
73317+ (task->acl->mode & GR_PROTSHM) &&
73318+ (task->acl != current->acl))) {
73319+ read_unlock(&tasklist_lock);
73320+ rcu_read_unlock();
73321+ gr_log_int3(GR_DONT_AUDIT, GR_SHMAT_ACL_MSG, GR_GLOBAL_UID(cuid), shm_cprid, shmid);
73322+ return 0;
73323+ }
73324+ read_unlock(&tasklist_lock);
73325+ rcu_read_unlock();
73326+
73327+ return 1;
73328+}
73329diff --git a/grsecurity/grsec_chdir.c b/grsecurity/grsec_chdir.c
73330new file mode 100644
73331index 0000000..bc0be01
73332--- /dev/null
73333+++ b/grsecurity/grsec_chdir.c
73334@@ -0,0 +1,19 @@
73335+#include <linux/kernel.h>
73336+#include <linux/sched.h>
73337+#include <linux/fs.h>
73338+#include <linux/file.h>
73339+#include <linux/grsecurity.h>
73340+#include <linux/grinternal.h>
73341+
73342+void
73343+gr_log_chdir(const struct dentry *dentry, const struct vfsmount *mnt)
73344+{
73345+#ifdef CONFIG_GRKERNSEC_AUDIT_CHDIR
73346+ if ((grsec_enable_chdir && grsec_enable_group &&
73347+ in_group_p(grsec_audit_gid)) || (grsec_enable_chdir &&
73348+ !grsec_enable_group)) {
73349+ gr_log_fs_generic(GR_DO_AUDIT, GR_CHDIR_AUDIT_MSG, dentry, mnt);
73350+ }
73351+#endif
73352+ return;
73353+}
73354diff --git a/grsecurity/grsec_chroot.c b/grsecurity/grsec_chroot.c
73355new file mode 100644
73356index 0000000..baa635c
73357--- /dev/null
73358+++ b/grsecurity/grsec_chroot.c
73359@@ -0,0 +1,387 @@
73360+#include <linux/kernel.h>
73361+#include <linux/module.h>
73362+#include <linux/sched.h>
73363+#include <linux/file.h>
73364+#include <linux/fs.h>
73365+#include <linux/mount.h>
73366+#include <linux/types.h>
73367+#include "../fs/mount.h"
73368+#include <linux/grsecurity.h>
73369+#include <linux/grinternal.h>
73370+
73371+#ifdef CONFIG_GRKERNSEC_CHROOT_INITRD
73372+int gr_init_ran;
73373+#endif
73374+
73375+void gr_set_chroot_entries(struct task_struct *task, const struct path *path)
73376+{
73377+#ifdef CONFIG_GRKERNSEC
73378+ if (task_pid_nr(task) > 1 && path->dentry != init_task.fs->root.dentry &&
73379+ path->dentry != task->nsproxy->mnt_ns->root->mnt.mnt_root
73380+#ifdef CONFIG_GRKERNSEC_CHROOT_INITRD
73381+ && gr_init_ran
73382+#endif
73383+ )
73384+ task->gr_is_chrooted = 1;
73385+ else {
73386+#ifdef CONFIG_GRKERNSEC_CHROOT_INITRD
73387+ if (task_pid_nr(task) == 1 && !gr_init_ran)
73388+ gr_init_ran = 1;
73389+#endif
73390+ task->gr_is_chrooted = 0;
73391+ }
73392+
73393+ task->gr_chroot_dentry = path->dentry;
73394+#endif
73395+ return;
73396+}
73397+
73398+void gr_clear_chroot_entries(struct task_struct *task)
73399+{
73400+#ifdef CONFIG_GRKERNSEC
73401+ task->gr_is_chrooted = 0;
73402+ task->gr_chroot_dentry = NULL;
73403+#endif
73404+ return;
73405+}
73406+
73407+int
73408+gr_handle_chroot_unix(const pid_t pid)
73409+{
73410+#ifdef CONFIG_GRKERNSEC_CHROOT_UNIX
73411+ struct task_struct *p;
73412+
73413+ if (unlikely(!grsec_enable_chroot_unix))
73414+ return 1;
73415+
73416+ if (likely(!proc_is_chrooted(current)))
73417+ return 1;
73418+
73419+ rcu_read_lock();
73420+ read_lock(&tasklist_lock);
73421+ p = find_task_by_vpid_unrestricted(pid);
73422+ if (unlikely(p && !have_same_root(current, p))) {
73423+ read_unlock(&tasklist_lock);
73424+ rcu_read_unlock();
73425+ gr_log_noargs(GR_DONT_AUDIT, GR_UNIX_CHROOT_MSG);
73426+ return 0;
73427+ }
73428+ read_unlock(&tasklist_lock);
73429+ rcu_read_unlock();
73430+#endif
73431+ return 1;
73432+}
73433+
73434+int
73435+gr_handle_chroot_nice(void)
73436+{
73437+#ifdef CONFIG_GRKERNSEC_CHROOT_NICE
73438+ if (grsec_enable_chroot_nice && proc_is_chrooted(current)) {
73439+ gr_log_noargs(GR_DONT_AUDIT, GR_NICE_CHROOT_MSG);
73440+ return -EPERM;
73441+ }
73442+#endif
73443+ return 0;
73444+}
73445+
73446+int
73447+gr_handle_chroot_setpriority(struct task_struct *p, const int niceval)
73448+{
73449+#ifdef CONFIG_GRKERNSEC_CHROOT_NICE
73450+ if (grsec_enable_chroot_nice && (niceval < task_nice(p))
73451+ && proc_is_chrooted(current)) {
73452+ gr_log_str_int(GR_DONT_AUDIT, GR_PRIORITY_CHROOT_MSG, p->comm, task_pid_nr(p));
73453+ return -EACCES;
73454+ }
73455+#endif
73456+ return 0;
73457+}
73458+
73459+int
73460+gr_handle_chroot_fowner(struct pid *pid, enum pid_type type)
73461+{
73462+#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK
73463+ struct task_struct *p;
73464+ int ret = 0;
73465+ if (!grsec_enable_chroot_findtask || !proc_is_chrooted(current) || !pid)
73466+ return ret;
73467+
73468+ read_lock(&tasklist_lock);
73469+ do_each_pid_task(pid, type, p) {
73470+ if (!have_same_root(current, p)) {
73471+ ret = 1;
73472+ goto out;
73473+ }
73474+ } while_each_pid_task(pid, type, p);
73475+out:
73476+ read_unlock(&tasklist_lock);
73477+ return ret;
73478+#endif
73479+ return 0;
73480+}
73481+
73482+int
73483+gr_pid_is_chrooted(struct task_struct *p)
73484+{
73485+#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK
73486+ if (!grsec_enable_chroot_findtask || !proc_is_chrooted(current) || p == NULL)
73487+ return 0;
73488+
73489+ if ((p->exit_state & (EXIT_ZOMBIE | EXIT_DEAD)) ||
73490+ !have_same_root(current, p)) {
73491+ return 1;
73492+ }
73493+#endif
73494+ return 0;
73495+}
73496+
73497+EXPORT_SYMBOL_GPL(gr_pid_is_chrooted);
73498+
73499+#if defined(CONFIG_GRKERNSEC_CHROOT_DOUBLE) || defined(CONFIG_GRKERNSEC_CHROOT_FCHDIR)
73500+int gr_is_outside_chroot(const struct dentry *u_dentry, const struct vfsmount *u_mnt)
73501+{
73502+ struct path path, currentroot;
73503+ int ret = 0;
73504+
73505+ path.dentry = (struct dentry *)u_dentry;
73506+ path.mnt = (struct vfsmount *)u_mnt;
73507+ get_fs_root(current->fs, &currentroot);
73508+ if (path_is_under(&path, &currentroot))
73509+ ret = 1;
73510+ path_put(&currentroot);
73511+
73512+ return ret;
73513+}
73514+#endif
73515+
73516+int
73517+gr_chroot_fchdir(struct dentry *u_dentry, struct vfsmount *u_mnt)
73518+{
73519+#ifdef CONFIG_GRKERNSEC_CHROOT_FCHDIR
73520+ if (!grsec_enable_chroot_fchdir)
73521+ return 1;
73522+
73523+ if (!proc_is_chrooted(current))
73524+ return 1;
73525+ else if (!gr_is_outside_chroot(u_dentry, u_mnt)) {
73526+ gr_log_fs_generic(GR_DONT_AUDIT, GR_CHROOT_FCHDIR_MSG, u_dentry, u_mnt);
73527+ return 0;
73528+ }
73529+#endif
73530+ return 1;
73531+}
73532+
73533+int
73534+gr_chroot_fhandle(void)
73535+{
73536+#ifdef CONFIG_GRKERNSEC_CHROOT_FCHDIR
73537+ if (!grsec_enable_chroot_fchdir)
73538+ return 1;
73539+
73540+ if (!proc_is_chrooted(current))
73541+ return 1;
73542+ else {
73543+ gr_log_noargs(GR_DONT_AUDIT, GR_CHROOT_FHANDLE_MSG);
73544+ return 0;
73545+ }
73546+#endif
73547+ return 1;
73548+}
73549+
73550+int
73551+gr_chroot_shmat(const pid_t shm_cprid, const pid_t shm_lapid,
73552+ const time_t shm_createtime)
73553+{
73554+#ifdef CONFIG_GRKERNSEC_CHROOT_SHMAT
73555+ struct task_struct *p;
73556+ time_t starttime;
73557+
73558+ if (unlikely(!grsec_enable_chroot_shmat))
73559+ return 1;
73560+
73561+ if (likely(!proc_is_chrooted(current)))
73562+ return 1;
73563+
73564+ rcu_read_lock();
73565+ read_lock(&tasklist_lock);
73566+
73567+ if ((p = find_task_by_vpid_unrestricted(shm_cprid))) {
73568+ starttime = p->start_time.tv_sec;
73569+ if (time_before_eq((unsigned long)starttime, (unsigned long)shm_createtime)) {
73570+ if (have_same_root(current, p)) {
73571+ goto allow;
73572+ } else {
73573+ read_unlock(&tasklist_lock);
73574+ rcu_read_unlock();
73575+ gr_log_noargs(GR_DONT_AUDIT, GR_SHMAT_CHROOT_MSG);
73576+ return 0;
73577+ }
73578+ }
73579+ /* creator exited, pid reuse, fall through to next check */
73580+ }
73581+ if ((p = find_task_by_vpid_unrestricted(shm_lapid))) {
73582+ if (unlikely(!have_same_root(current, p))) {
73583+ read_unlock(&tasklist_lock);
73584+ rcu_read_unlock();
73585+ gr_log_noargs(GR_DONT_AUDIT, GR_SHMAT_CHROOT_MSG);
73586+ return 0;
73587+ }
73588+ }
73589+
73590+allow:
73591+ read_unlock(&tasklist_lock);
73592+ rcu_read_unlock();
73593+#endif
73594+ return 1;
73595+}
73596+
73597+void
73598+gr_log_chroot_exec(const struct dentry *dentry, const struct vfsmount *mnt)
73599+{
73600+#ifdef CONFIG_GRKERNSEC_CHROOT_EXECLOG
73601+ if (grsec_enable_chroot_execlog && proc_is_chrooted(current))
73602+ gr_log_fs_generic(GR_DO_AUDIT, GR_EXEC_CHROOT_MSG, dentry, mnt);
73603+#endif
73604+ return;
73605+}
73606+
73607+int
73608+gr_handle_chroot_mknod(const struct dentry *dentry,
73609+ const struct vfsmount *mnt, const int mode)
73610+{
73611+#ifdef CONFIG_GRKERNSEC_CHROOT_MKNOD
73612+ if (grsec_enable_chroot_mknod && !S_ISFIFO(mode) && !S_ISREG(mode) &&
73613+ proc_is_chrooted(current)) {
73614+ gr_log_fs_generic(GR_DONT_AUDIT, GR_MKNOD_CHROOT_MSG, dentry, mnt);
73615+ return -EPERM;
73616+ }
73617+#endif
73618+ return 0;
73619+}
73620+
73621+int
73622+gr_handle_chroot_mount(const struct dentry *dentry,
73623+ const struct vfsmount *mnt, const char *dev_name)
73624+{
73625+#ifdef CONFIG_GRKERNSEC_CHROOT_MOUNT
73626+ if (grsec_enable_chroot_mount && proc_is_chrooted(current)) {
73627+ gr_log_str_fs(GR_DONT_AUDIT, GR_MOUNT_CHROOT_MSG, dev_name ? dev_name : "none", dentry, mnt);
73628+ return -EPERM;
73629+ }
73630+#endif
73631+ return 0;
73632+}
73633+
73634+int
73635+gr_handle_chroot_pivot(void)
73636+{
73637+#ifdef CONFIG_GRKERNSEC_CHROOT_PIVOT
73638+ if (grsec_enable_chroot_pivot && proc_is_chrooted(current)) {
73639+ gr_log_noargs(GR_DONT_AUDIT, GR_PIVOT_CHROOT_MSG);
73640+ return -EPERM;
73641+ }
73642+#endif
73643+ return 0;
73644+}
73645+
73646+int
73647+gr_handle_chroot_chroot(const struct dentry *dentry, const struct vfsmount *mnt)
73648+{
73649+#ifdef CONFIG_GRKERNSEC_CHROOT_DOUBLE
73650+ if (grsec_enable_chroot_double && proc_is_chrooted(current) &&
73651+ !gr_is_outside_chroot(dentry, mnt)) {
73652+ gr_log_fs_generic(GR_DONT_AUDIT, GR_CHROOT_CHROOT_MSG, dentry, mnt);
73653+ return -EPERM;
73654+ }
73655+#endif
73656+ return 0;
73657+}
73658+
73659+extern const char *captab_log[];
73660+extern int captab_log_entries;
73661+
73662+int
73663+gr_task_chroot_is_capable(const struct task_struct *task, const struct cred *cred, const int cap)
73664+{
73665+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
73666+ if (grsec_enable_chroot_caps && proc_is_chrooted(task)) {
73667+ kernel_cap_t chroot_caps = GR_CHROOT_CAPS;
73668+ if (cap_raised(chroot_caps, cap)) {
73669+ if (cap_raised(cred->cap_effective, cap) && cap < captab_log_entries) {
73670+ gr_log_cap(GR_DONT_AUDIT, GR_CAP_CHROOT_MSG, task, captab_log[cap]);
73671+ }
73672+ return 0;
73673+ }
73674+ }
73675+#endif
73676+ return 1;
73677+}
73678+
73679+int
73680+gr_chroot_is_capable(const int cap)
73681+{
73682+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
73683+ return gr_task_chroot_is_capable(current, current_cred(), cap);
73684+#endif
73685+ return 1;
73686+}
73687+
73688+int
73689+gr_task_chroot_is_capable_nolog(const struct task_struct *task, const int cap)
73690+{
73691+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
73692+ if (grsec_enable_chroot_caps && proc_is_chrooted(task)) {
73693+ kernel_cap_t chroot_caps = GR_CHROOT_CAPS;
73694+ if (cap_raised(chroot_caps, cap)) {
73695+ return 0;
73696+ }
73697+ }
73698+#endif
73699+ return 1;
73700+}
73701+
73702+int
73703+gr_chroot_is_capable_nolog(const int cap)
73704+{
73705+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
73706+ return gr_task_chroot_is_capable_nolog(current, cap);
73707+#endif
73708+ return 1;
73709+}
73710+
73711+int
73712+gr_handle_chroot_sysctl(const int op)
73713+{
73714+#ifdef CONFIG_GRKERNSEC_CHROOT_SYSCTL
73715+ if (grsec_enable_chroot_sysctl && (op & MAY_WRITE) &&
73716+ proc_is_chrooted(current))
73717+ return -EACCES;
73718+#endif
73719+ return 0;
73720+}
73721+
73722+void
73723+gr_handle_chroot_chdir(const struct path *path)
73724+{
73725+#ifdef CONFIG_GRKERNSEC_CHROOT_CHDIR
73726+ if (grsec_enable_chroot_chdir)
73727+ set_fs_pwd(current->fs, path);
73728+#endif
73729+ return;
73730+}
73731+
73732+int
73733+gr_handle_chroot_chmod(const struct dentry *dentry,
73734+ const struct vfsmount *mnt, const int mode)
73735+{
73736+#ifdef CONFIG_GRKERNSEC_CHROOT_CHMOD
73737+ /* allow chmod +s on directories, but not files */
73738+ if (grsec_enable_chroot_chmod && !S_ISDIR(dentry->d_inode->i_mode) &&
73739+ ((mode & S_ISUID) || ((mode & (S_ISGID | S_IXGRP)) == (S_ISGID | S_IXGRP))) &&
73740+ proc_is_chrooted(current)) {
73741+ gr_log_fs_generic(GR_DONT_AUDIT, GR_CHMOD_CHROOT_MSG, dentry, mnt);
73742+ return -EPERM;
73743+ }
73744+#endif
73745+ return 0;
73746+}
73747diff --git a/grsecurity/grsec_disabled.c b/grsecurity/grsec_disabled.c
73748new file mode 100644
73749index 0000000..de31e65
73750--- /dev/null
73751+++ b/grsecurity/grsec_disabled.c
73752@@ -0,0 +1,434 @@
73753+#include <linux/kernel.h>
73754+#include <linux/module.h>
73755+#include <linux/sched.h>
73756+#include <linux/file.h>
73757+#include <linux/fs.h>
73758+#include <linux/kdev_t.h>
73759+#include <linux/net.h>
73760+#include <linux/in.h>
73761+#include <linux/ip.h>
73762+#include <linux/skbuff.h>
73763+#include <linux/sysctl.h>
73764+
73765+#ifdef CONFIG_PAX_HAVE_ACL_FLAGS
73766+void
73767+pax_set_initial_flags(struct linux_binprm *bprm)
73768+{
73769+ return;
73770+}
73771+#endif
73772+
73773+#ifdef CONFIG_SYSCTL
73774+__u32
73775+gr_handle_sysctl(const struct ctl_table * table, const int op)
73776+{
73777+ return 0;
73778+}
73779+#endif
73780+
73781+#ifdef CONFIG_TASKSTATS
73782+int gr_is_taskstats_denied(int pid)
73783+{
73784+ return 0;
73785+}
73786+#endif
73787+
73788+int
73789+gr_acl_is_enabled(void)
73790+{
73791+ return 0;
73792+}
73793+
73794+void
73795+gr_handle_proc_create(const struct dentry *dentry, const struct inode *inode)
73796+{
73797+ return;
73798+}
73799+
73800+int
73801+gr_handle_rawio(const struct inode *inode)
73802+{
73803+ return 0;
73804+}
73805+
73806+void
73807+gr_acl_handle_psacct(struct task_struct *task, const long code)
73808+{
73809+ return;
73810+}
73811+
73812+int
73813+gr_handle_ptrace(struct task_struct *task, const long request)
73814+{
73815+ return 0;
73816+}
73817+
73818+int
73819+gr_handle_proc_ptrace(struct task_struct *task)
73820+{
73821+ return 0;
73822+}
73823+
73824+int
73825+gr_set_acls(const int type)
73826+{
73827+ return 0;
73828+}
73829+
73830+int
73831+gr_check_hidden_task(const struct task_struct *tsk)
73832+{
73833+ return 0;
73834+}
73835+
73836+int
73837+gr_check_protected_task(const struct task_struct *task)
73838+{
73839+ return 0;
73840+}
73841+
73842+int
73843+gr_check_protected_task_fowner(struct pid *pid, enum pid_type type)
73844+{
73845+ return 0;
73846+}
73847+
73848+void
73849+gr_copy_label(struct task_struct *tsk)
73850+{
73851+ return;
73852+}
73853+
73854+void
73855+gr_set_pax_flags(struct task_struct *task)
73856+{
73857+ return;
73858+}
73859+
73860+int
73861+gr_set_proc_label(const struct dentry *dentry, const struct vfsmount *mnt,
73862+ const int unsafe_share)
73863+{
73864+ return 0;
73865+}
73866+
73867+void
73868+gr_handle_delete(const ino_t ino, const dev_t dev)
73869+{
73870+ return;
73871+}
73872+
73873+void
73874+gr_handle_create(const struct dentry *dentry, const struct vfsmount *mnt)
73875+{
73876+ return;
73877+}
73878+
73879+void
73880+gr_handle_crash(struct task_struct *task, const int sig)
73881+{
73882+ return;
73883+}
73884+
73885+int
73886+gr_check_crash_exec(const struct file *filp)
73887+{
73888+ return 0;
73889+}
73890+
73891+int
73892+gr_check_crash_uid(const kuid_t uid)
73893+{
73894+ return 0;
73895+}
73896+
73897+void
73898+gr_handle_rename(struct inode *old_dir, struct inode *new_dir,
73899+ struct dentry *old_dentry,
73900+ struct dentry *new_dentry,
73901+ struct vfsmount *mnt, const __u8 replace, unsigned int flags)
73902+{
73903+ return;
73904+}
73905+
73906+int
73907+gr_search_socket(const int family, const int type, const int protocol)
73908+{
73909+ return 1;
73910+}
73911+
73912+int
73913+gr_search_connectbind(const int mode, const struct socket *sock,
73914+ const struct sockaddr_in *addr)
73915+{
73916+ return 0;
73917+}
73918+
73919+void
73920+gr_handle_alertkill(struct task_struct *task)
73921+{
73922+ return;
73923+}
73924+
73925+__u32
73926+gr_acl_handle_execve(const struct dentry * dentry, const struct vfsmount * mnt)
73927+{
73928+ return 1;
73929+}
73930+
73931+__u32
73932+gr_acl_handle_hidden_file(const struct dentry * dentry,
73933+ const struct vfsmount * mnt)
73934+{
73935+ return 1;
73936+}
73937+
73938+__u32
73939+gr_acl_handle_open(const struct dentry * dentry, const struct vfsmount * mnt,
73940+ int acc_mode)
73941+{
73942+ return 1;
73943+}
73944+
73945+__u32
73946+gr_acl_handle_rmdir(const struct dentry * dentry, const struct vfsmount * mnt)
73947+{
73948+ return 1;
73949+}
73950+
73951+__u32
73952+gr_acl_handle_unlink(const struct dentry * dentry, const struct vfsmount * mnt)
73953+{
73954+ return 1;
73955+}
73956+
73957+int
73958+gr_acl_handle_mmap(const struct file *file, const unsigned long prot,
73959+ unsigned int *vm_flags)
73960+{
73961+ return 1;
73962+}
73963+
73964+__u32
73965+gr_acl_handle_truncate(const struct dentry * dentry,
73966+ const struct vfsmount * mnt)
73967+{
73968+ return 1;
73969+}
73970+
73971+__u32
73972+gr_acl_handle_utime(const struct dentry * dentry, const struct vfsmount * mnt)
73973+{
73974+ return 1;
73975+}
73976+
73977+__u32
73978+gr_acl_handle_access(const struct dentry * dentry,
73979+ const struct vfsmount * mnt, const int fmode)
73980+{
73981+ return 1;
73982+}
73983+
73984+__u32
73985+gr_acl_handle_chmod(const struct dentry * dentry, const struct vfsmount * mnt,
73986+ umode_t *mode)
73987+{
73988+ return 1;
73989+}
73990+
73991+__u32
73992+gr_acl_handle_chown(const struct dentry * dentry, const struct vfsmount * mnt)
73993+{
73994+ return 1;
73995+}
73996+
73997+__u32
73998+gr_acl_handle_setxattr(const struct dentry * dentry, const struct vfsmount * mnt)
73999+{
74000+ return 1;
74001+}
74002+
74003+__u32
74004+gr_acl_handle_removexattr(const struct dentry * dentry, const struct vfsmount * mnt)
74005+{
74006+ return 1;
74007+}
74008+
74009+void
74010+grsecurity_init(void)
74011+{
74012+ return;
74013+}
74014+
74015+umode_t gr_acl_umask(void)
74016+{
74017+ return 0;
74018+}
74019+
74020+__u32
74021+gr_acl_handle_mknod(const struct dentry * new_dentry,
74022+ const struct dentry * parent_dentry,
74023+ const struct vfsmount * parent_mnt,
74024+ const int mode)
74025+{
74026+ return 1;
74027+}
74028+
74029+__u32
74030+gr_acl_handle_mkdir(const struct dentry * new_dentry,
74031+ const struct dentry * parent_dentry,
74032+ const struct vfsmount * parent_mnt)
74033+{
74034+ return 1;
74035+}
74036+
74037+__u32
74038+gr_acl_handle_symlink(const struct dentry * new_dentry,
74039+ const struct dentry * parent_dentry,
74040+ const struct vfsmount * parent_mnt, const struct filename *from)
74041+{
74042+ return 1;
74043+}
74044+
74045+__u32
74046+gr_acl_handle_link(const struct dentry * new_dentry,
74047+ const struct dentry * parent_dentry,
74048+ const struct vfsmount * parent_mnt,
74049+ const struct dentry * old_dentry,
74050+ const struct vfsmount * old_mnt, const struct filename *to)
74051+{
74052+ return 1;
74053+}
74054+
74055+int
74056+gr_acl_handle_rename(const struct dentry *new_dentry,
74057+ const struct dentry *parent_dentry,
74058+ const struct vfsmount *parent_mnt,
74059+ const struct dentry *old_dentry,
74060+ const struct inode *old_parent_inode,
74061+ const struct vfsmount *old_mnt, const struct filename *newname,
74062+ unsigned int flags)
74063+{
74064+ return 0;
74065+}
74066+
74067+int
74068+gr_acl_handle_filldir(const struct file *file, const char *name,
74069+ const int namelen, const ino_t ino)
74070+{
74071+ return 1;
74072+}
74073+
74074+int
74075+gr_handle_shmat(const pid_t shm_cprid, const pid_t shm_lapid,
74076+ const time_t shm_createtime, const kuid_t cuid, const int shmid)
74077+{
74078+ return 1;
74079+}
74080+
74081+int
74082+gr_search_bind(const struct socket *sock, const struct sockaddr_in *addr)
74083+{
74084+ return 0;
74085+}
74086+
74087+int
74088+gr_search_accept(const struct socket *sock)
74089+{
74090+ return 0;
74091+}
74092+
74093+int
74094+gr_search_listen(const struct socket *sock)
74095+{
74096+ return 0;
74097+}
74098+
74099+int
74100+gr_search_connect(const struct socket *sock, const struct sockaddr_in *addr)
74101+{
74102+ return 0;
74103+}
74104+
74105+__u32
74106+gr_acl_handle_unix(const struct dentry * dentry, const struct vfsmount * mnt)
74107+{
74108+ return 1;
74109+}
74110+
74111+__u32
74112+gr_acl_handle_creat(const struct dentry * dentry,
74113+ const struct dentry * p_dentry,
74114+ const struct vfsmount * p_mnt, int open_flags, int acc_mode,
74115+ const int imode)
74116+{
74117+ return 1;
74118+}
74119+
74120+void
74121+gr_acl_handle_exit(void)
74122+{
74123+ return;
74124+}
74125+
74126+int
74127+gr_acl_handle_mprotect(const struct file *file, const unsigned long prot)
74128+{
74129+ return 1;
74130+}
74131+
74132+void
74133+gr_set_role_label(const kuid_t uid, const kgid_t gid)
74134+{
74135+ return;
74136+}
74137+
74138+int
74139+gr_acl_handle_procpidmem(const struct task_struct *task)
74140+{
74141+ return 0;
74142+}
74143+
74144+int
74145+gr_search_udp_recvmsg(const struct sock *sk, const struct sk_buff *skb)
74146+{
74147+ return 0;
74148+}
74149+
74150+int
74151+gr_search_udp_sendmsg(const struct sock *sk, const struct sockaddr_in *addr)
74152+{
74153+ return 0;
74154+}
74155+
74156+int
74157+gr_check_user_change(kuid_t real, kuid_t effective, kuid_t fs)
74158+{
74159+ return 0;
74160+}
74161+
74162+int
74163+gr_check_group_change(kgid_t real, kgid_t effective, kgid_t fs)
74164+{
74165+ return 0;
74166+}
74167+
74168+int gr_acl_enable_at_secure(void)
74169+{
74170+ return 0;
74171+}
74172+
74173+dev_t gr_get_dev_from_dentry(struct dentry *dentry)
74174+{
74175+ return dentry->d_sb->s_dev;
74176+}
74177+
74178+void gr_put_exec_file(struct task_struct *task)
74179+{
74180+ return;
74181+}
74182+
74183+#ifdef CONFIG_SECURITY
74184+EXPORT_SYMBOL_GPL(gr_check_user_change);
74185+EXPORT_SYMBOL_GPL(gr_check_group_change);
74186+#endif
74187diff --git a/grsecurity/grsec_exec.c b/grsecurity/grsec_exec.c
74188new file mode 100644
74189index 0000000..f35f454
74190--- /dev/null
74191+++ b/grsecurity/grsec_exec.c
74192@@ -0,0 +1,187 @@
74193+#include <linux/kernel.h>
74194+#include <linux/sched.h>
74195+#include <linux/file.h>
74196+#include <linux/binfmts.h>
74197+#include <linux/fs.h>
74198+#include <linux/types.h>
74199+#include <linux/grdefs.h>
74200+#include <linux/grsecurity.h>
74201+#include <linux/grinternal.h>
74202+#include <linux/capability.h>
74203+#include <linux/module.h>
74204+#include <linux/compat.h>
74205+
74206+#include <asm/uaccess.h>
74207+
74208+#ifdef CONFIG_GRKERNSEC_EXECLOG
74209+static char gr_exec_arg_buf[132];
74210+static DEFINE_MUTEX(gr_exec_arg_mutex);
74211+#endif
74212+
74213+struct user_arg_ptr {
74214+#ifdef CONFIG_COMPAT
74215+ bool is_compat;
74216+#endif
74217+ union {
74218+ const char __user *const __user *native;
74219+#ifdef CONFIG_COMPAT
74220+ const compat_uptr_t __user *compat;
74221+#endif
74222+ } ptr;
74223+};
74224+
74225+extern const char __user *get_user_arg_ptr(struct user_arg_ptr argv, int nr);
74226+
74227+void
74228+gr_handle_exec_args(struct linux_binprm *bprm, struct user_arg_ptr argv)
74229+{
74230+#ifdef CONFIG_GRKERNSEC_EXECLOG
74231+ char *grarg = gr_exec_arg_buf;
74232+ unsigned int i, x, execlen = 0;
74233+ char c;
74234+
74235+ if (!((grsec_enable_execlog && grsec_enable_group &&
74236+ in_group_p(grsec_audit_gid))
74237+ || (grsec_enable_execlog && !grsec_enable_group)))
74238+ return;
74239+
74240+ mutex_lock(&gr_exec_arg_mutex);
74241+ memset(grarg, 0, sizeof(gr_exec_arg_buf));
74242+
74243+ for (i = 0; i < bprm->argc && execlen < 128; i++) {
74244+ const char __user *p;
74245+ unsigned int len;
74246+
74247+ p = get_user_arg_ptr(argv, i);
74248+ if (IS_ERR(p))
74249+ goto log;
74250+
74251+ len = strnlen_user(p, 128 - execlen);
74252+ if (len > 128 - execlen)
74253+ len = 128 - execlen;
74254+ else if (len > 0)
74255+ len--;
74256+ if (copy_from_user(grarg + execlen, p, len))
74257+ goto log;
74258+
74259+ /* rewrite unprintable characters */
74260+ for (x = 0; x < len; x++) {
74261+ c = *(grarg + execlen + x);
74262+ if (c < 32 || c > 126)
74263+ *(grarg + execlen + x) = ' ';
74264+ }
74265+
74266+ execlen += len;
74267+ *(grarg + execlen) = ' ';
74268+ *(grarg + execlen + 1) = '\0';
74269+ execlen++;
74270+ }
74271+
74272+ log:
74273+ gr_log_fs_str(GR_DO_AUDIT, GR_EXEC_AUDIT_MSG, bprm->file->f_path.dentry,
74274+ bprm->file->f_path.mnt, grarg);
74275+ mutex_unlock(&gr_exec_arg_mutex);
74276+#endif
74277+ return;
74278+}
74279+
74280+#ifdef CONFIG_GRKERNSEC
74281+extern int gr_acl_is_capable(const int cap);
74282+extern int gr_acl_is_capable_nolog(const int cap);
74283+extern int gr_task_acl_is_capable(const struct task_struct *task, const struct cred *cred, const int cap);
74284+extern int gr_task_acl_is_capable_nolog(const struct task_struct *task, const int cap);
74285+extern int gr_chroot_is_capable(const int cap);
74286+extern int gr_chroot_is_capable_nolog(const int cap);
74287+extern int gr_task_chroot_is_capable(const struct task_struct *task, const struct cred *cred, const int cap);
74288+extern int gr_task_chroot_is_capable_nolog(const struct task_struct *task, const int cap);
74289+#endif
74290+
74291+const char *captab_log[] = {
74292+ "CAP_CHOWN",
74293+ "CAP_DAC_OVERRIDE",
74294+ "CAP_DAC_READ_SEARCH",
74295+ "CAP_FOWNER",
74296+ "CAP_FSETID",
74297+ "CAP_KILL",
74298+ "CAP_SETGID",
74299+ "CAP_SETUID",
74300+ "CAP_SETPCAP",
74301+ "CAP_LINUX_IMMUTABLE",
74302+ "CAP_NET_BIND_SERVICE",
74303+ "CAP_NET_BROADCAST",
74304+ "CAP_NET_ADMIN",
74305+ "CAP_NET_RAW",
74306+ "CAP_IPC_LOCK",
74307+ "CAP_IPC_OWNER",
74308+ "CAP_SYS_MODULE",
74309+ "CAP_SYS_RAWIO",
74310+ "CAP_SYS_CHROOT",
74311+ "CAP_SYS_PTRACE",
74312+ "CAP_SYS_PACCT",
74313+ "CAP_SYS_ADMIN",
74314+ "CAP_SYS_BOOT",
74315+ "CAP_SYS_NICE",
74316+ "CAP_SYS_RESOURCE",
74317+ "CAP_SYS_TIME",
74318+ "CAP_SYS_TTY_CONFIG",
74319+ "CAP_MKNOD",
74320+ "CAP_LEASE",
74321+ "CAP_AUDIT_WRITE",
74322+ "CAP_AUDIT_CONTROL",
74323+ "CAP_SETFCAP",
74324+ "CAP_MAC_OVERRIDE",
74325+ "CAP_MAC_ADMIN",
74326+ "CAP_SYSLOG",
74327+ "CAP_WAKE_ALARM"
74328+};
74329+
74330+int captab_log_entries = sizeof(captab_log)/sizeof(captab_log[0]);
74331+
74332+int gr_is_capable(const int cap)
74333+{
74334+#ifdef CONFIG_GRKERNSEC
74335+ if (gr_acl_is_capable(cap) && gr_chroot_is_capable(cap))
74336+ return 1;
74337+ return 0;
74338+#else
74339+ return 1;
74340+#endif
74341+}
74342+
74343+int gr_task_is_capable(const struct task_struct *task, const struct cred *cred, const int cap)
74344+{
74345+#ifdef CONFIG_GRKERNSEC
74346+ if (gr_task_acl_is_capable(task, cred, cap) && gr_task_chroot_is_capable(task, cred, cap))
74347+ return 1;
74348+ return 0;
74349+#else
74350+ return 1;
74351+#endif
74352+}
74353+
74354+int gr_is_capable_nolog(const int cap)
74355+{
74356+#ifdef CONFIG_GRKERNSEC
74357+ if (gr_acl_is_capable_nolog(cap) && gr_chroot_is_capable_nolog(cap))
74358+ return 1;
74359+ return 0;
74360+#else
74361+ return 1;
74362+#endif
74363+}
74364+
74365+int gr_task_is_capable_nolog(const struct task_struct *task, const int cap)
74366+{
74367+#ifdef CONFIG_GRKERNSEC
74368+ if (gr_task_acl_is_capable_nolog(task, cap) && gr_task_chroot_is_capable_nolog(task, cap))
74369+ return 1;
74370+ return 0;
74371+#else
74372+ return 1;
74373+#endif
74374+}
74375+
74376+EXPORT_SYMBOL_GPL(gr_is_capable);
74377+EXPORT_SYMBOL_GPL(gr_is_capable_nolog);
74378+EXPORT_SYMBOL_GPL(gr_task_is_capable);
74379+EXPORT_SYMBOL_GPL(gr_task_is_capable_nolog);
74380diff --git a/grsecurity/grsec_fifo.c b/grsecurity/grsec_fifo.c
74381new file mode 100644
74382index 0000000..06cc6ea
74383--- /dev/null
74384+++ b/grsecurity/grsec_fifo.c
74385@@ -0,0 +1,24 @@
74386+#include <linux/kernel.h>
74387+#include <linux/sched.h>
74388+#include <linux/fs.h>
74389+#include <linux/file.h>
74390+#include <linux/grinternal.h>
74391+
74392+int
74393+gr_handle_fifo(const struct dentry *dentry, const struct vfsmount *mnt,
74394+ const struct dentry *dir, const int flag, const int acc_mode)
74395+{
74396+#ifdef CONFIG_GRKERNSEC_FIFO
74397+ const struct cred *cred = current_cred();
74398+
74399+ if (grsec_enable_fifo && S_ISFIFO(dentry->d_inode->i_mode) &&
74400+ !(flag & O_EXCL) && (dir->d_inode->i_mode & S_ISVTX) &&
74401+ !uid_eq(dentry->d_inode->i_uid, dir->d_inode->i_uid) &&
74402+ !uid_eq(cred->fsuid, dentry->d_inode->i_uid)) {
74403+ if (!inode_permission(dentry->d_inode, acc_mode))
74404+ gr_log_fs_int2(GR_DONT_AUDIT, GR_FIFO_MSG, dentry, mnt, GR_GLOBAL_UID(dentry->d_inode->i_uid), GR_GLOBAL_GID(dentry->d_inode->i_gid));
74405+ return -EACCES;
74406+ }
74407+#endif
74408+ return 0;
74409+}
74410diff --git a/grsecurity/grsec_fork.c b/grsecurity/grsec_fork.c
74411new file mode 100644
74412index 0000000..8ca18bf
74413--- /dev/null
74414+++ b/grsecurity/grsec_fork.c
74415@@ -0,0 +1,23 @@
74416+#include <linux/kernel.h>
74417+#include <linux/sched.h>
74418+#include <linux/grsecurity.h>
74419+#include <linux/grinternal.h>
74420+#include <linux/errno.h>
74421+
74422+void
74423+gr_log_forkfail(const int retval)
74424+{
74425+#ifdef CONFIG_GRKERNSEC_FORKFAIL
74426+ if (grsec_enable_forkfail && (retval == -EAGAIN || retval == -ENOMEM)) {
74427+ switch (retval) {
74428+ case -EAGAIN:
74429+ gr_log_str(GR_DONT_AUDIT, GR_FAILFORK_MSG, "EAGAIN");
74430+ break;
74431+ case -ENOMEM:
74432+ gr_log_str(GR_DONT_AUDIT, GR_FAILFORK_MSG, "ENOMEM");
74433+ break;
74434+ }
74435+ }
74436+#endif
74437+ return;
74438+}
74439diff --git a/grsecurity/grsec_init.c b/grsecurity/grsec_init.c
74440new file mode 100644
74441index 0000000..ae6c028
74442--- /dev/null
74443+++ b/grsecurity/grsec_init.c
74444@@ -0,0 +1,272 @@
74445+#include <linux/kernel.h>
74446+#include <linux/sched.h>
74447+#include <linux/mm.h>
74448+#include <linux/gracl.h>
74449+#include <linux/slab.h>
74450+#include <linux/vmalloc.h>
74451+#include <linux/percpu.h>
74452+#include <linux/module.h>
74453+
74454+int grsec_enable_ptrace_readexec;
74455+int grsec_enable_setxid;
74456+int grsec_enable_symlinkown;
74457+kgid_t grsec_symlinkown_gid;
74458+int grsec_enable_brute;
74459+int grsec_enable_link;
74460+int grsec_enable_dmesg;
74461+int grsec_enable_harden_ptrace;
74462+int grsec_enable_harden_ipc;
74463+int grsec_enable_fifo;
74464+int grsec_enable_execlog;
74465+int grsec_enable_signal;
74466+int grsec_enable_forkfail;
74467+int grsec_enable_audit_ptrace;
74468+int grsec_enable_time;
74469+int grsec_enable_group;
74470+kgid_t grsec_audit_gid;
74471+int grsec_enable_chdir;
74472+int grsec_enable_mount;
74473+int grsec_enable_rofs;
74474+int grsec_deny_new_usb;
74475+int grsec_enable_chroot_findtask;
74476+int grsec_enable_chroot_mount;
74477+int grsec_enable_chroot_shmat;
74478+int grsec_enable_chroot_fchdir;
74479+int grsec_enable_chroot_double;
74480+int grsec_enable_chroot_pivot;
74481+int grsec_enable_chroot_chdir;
74482+int grsec_enable_chroot_chmod;
74483+int grsec_enable_chroot_mknod;
74484+int grsec_enable_chroot_nice;
74485+int grsec_enable_chroot_execlog;
74486+int grsec_enable_chroot_caps;
74487+int grsec_enable_chroot_sysctl;
74488+int grsec_enable_chroot_unix;
74489+int grsec_enable_tpe;
74490+kgid_t grsec_tpe_gid;
74491+int grsec_enable_blackhole;
74492+#ifdef CONFIG_IPV6_MODULE
74493+EXPORT_SYMBOL_GPL(grsec_enable_blackhole);
74494+#endif
74495+int grsec_lastack_retries;
74496+int grsec_enable_tpe_all;
74497+int grsec_enable_tpe_invert;
74498+int grsec_enable_socket_all;
74499+kgid_t grsec_socket_all_gid;
74500+int grsec_enable_socket_client;
74501+kgid_t grsec_socket_client_gid;
74502+int grsec_enable_socket_server;
74503+kgid_t grsec_socket_server_gid;
74504+int grsec_resource_logging;
74505+int grsec_disable_privio;
74506+int grsec_enable_log_rwxmaps;
74507+int grsec_lock;
74508+
74509+DEFINE_SPINLOCK(grsec_alert_lock);
74510+unsigned long grsec_alert_wtime = 0;
74511+unsigned long grsec_alert_fyet = 0;
74512+
74513+DEFINE_SPINLOCK(grsec_audit_lock);
74514+
74515+DEFINE_RWLOCK(grsec_exec_file_lock);
74516+
74517+char *gr_shared_page[4];
74518+
74519+char *gr_alert_log_fmt;
74520+char *gr_audit_log_fmt;
74521+char *gr_alert_log_buf;
74522+char *gr_audit_log_buf;
74523+
74524+void __init
74525+grsecurity_init(void)
74526+{
74527+ int j;
74528+ /* create the per-cpu shared pages */
74529+
74530+#ifdef CONFIG_X86
74531+ memset((char *)(0x41a + PAGE_OFFSET), 0, 36);
74532+#endif
74533+
74534+ for (j = 0; j < 4; j++) {
74535+ gr_shared_page[j] = (char *)__alloc_percpu(PAGE_SIZE, __alignof__(unsigned long long));
74536+ if (gr_shared_page[j] == NULL) {
74537+ panic("Unable to allocate grsecurity shared page");
74538+ return;
74539+ }
74540+ }
74541+
74542+ /* allocate log buffers */
74543+ gr_alert_log_fmt = kmalloc(512, GFP_KERNEL);
74544+ if (!gr_alert_log_fmt) {
74545+ panic("Unable to allocate grsecurity alert log format buffer");
74546+ return;
74547+ }
74548+ gr_audit_log_fmt = kmalloc(512, GFP_KERNEL);
74549+ if (!gr_audit_log_fmt) {
74550+ panic("Unable to allocate grsecurity audit log format buffer");
74551+ return;
74552+ }
74553+ gr_alert_log_buf = (char *) get_zeroed_page(GFP_KERNEL);
74554+ if (!gr_alert_log_buf) {
74555+ panic("Unable to allocate grsecurity alert log buffer");
74556+ return;
74557+ }
74558+ gr_audit_log_buf = (char *) get_zeroed_page(GFP_KERNEL);
74559+ if (!gr_audit_log_buf) {
74560+ panic("Unable to allocate grsecurity audit log buffer");
74561+ return;
74562+ }
74563+
74564+#ifdef CONFIG_GRKERNSEC_IO
74565+#if !defined(CONFIG_GRKERNSEC_SYSCTL_DISTRO)
74566+ grsec_disable_privio = 1;
74567+#elif defined(CONFIG_GRKERNSEC_SYSCTL_ON)
74568+ grsec_disable_privio = 1;
74569+#else
74570+ grsec_disable_privio = 0;
74571+#endif
74572+#endif
74573+
74574+#ifdef CONFIG_GRKERNSEC_TPE_INVERT
74575+ /* for backward compatibility, tpe_invert always defaults to on if
74576+ enabled in the kernel
74577+ */
74578+ grsec_enable_tpe_invert = 1;
74579+#endif
74580+
74581+#if !defined(CONFIG_GRKERNSEC_SYSCTL) || defined(CONFIG_GRKERNSEC_SYSCTL_ON)
74582+#ifndef CONFIG_GRKERNSEC_SYSCTL
74583+ grsec_lock = 1;
74584+#endif
74585+
74586+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
74587+ grsec_enable_log_rwxmaps = 1;
74588+#endif
74589+#ifdef CONFIG_GRKERNSEC_AUDIT_GROUP
74590+ grsec_enable_group = 1;
74591+ grsec_audit_gid = KGIDT_INIT(CONFIG_GRKERNSEC_AUDIT_GID);
74592+#endif
74593+#ifdef CONFIG_GRKERNSEC_PTRACE_READEXEC
74594+ grsec_enable_ptrace_readexec = 1;
74595+#endif
74596+#ifdef CONFIG_GRKERNSEC_AUDIT_CHDIR
74597+ grsec_enable_chdir = 1;
74598+#endif
74599+#ifdef CONFIG_GRKERNSEC_HARDEN_PTRACE
74600+ grsec_enable_harden_ptrace = 1;
74601+#endif
74602+#ifdef CONFIG_GRKERNSEC_HARDEN_IPC
74603+ grsec_enable_harden_ipc = 1;
74604+#endif
74605+#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
74606+ grsec_enable_mount = 1;
74607+#endif
74608+#ifdef CONFIG_GRKERNSEC_LINK
74609+ grsec_enable_link = 1;
74610+#endif
74611+#ifdef CONFIG_GRKERNSEC_BRUTE
74612+ grsec_enable_brute = 1;
74613+#endif
74614+#ifdef CONFIG_GRKERNSEC_DMESG
74615+ grsec_enable_dmesg = 1;
74616+#endif
74617+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
74618+ grsec_enable_blackhole = 1;
74619+ grsec_lastack_retries = 4;
74620+#endif
74621+#ifdef CONFIG_GRKERNSEC_FIFO
74622+ grsec_enable_fifo = 1;
74623+#endif
74624+#ifdef CONFIG_GRKERNSEC_EXECLOG
74625+ grsec_enable_execlog = 1;
74626+#endif
74627+#ifdef CONFIG_GRKERNSEC_SETXID
74628+ grsec_enable_setxid = 1;
74629+#endif
74630+#ifdef CONFIG_GRKERNSEC_SIGNAL
74631+ grsec_enable_signal = 1;
74632+#endif
74633+#ifdef CONFIG_GRKERNSEC_FORKFAIL
74634+ grsec_enable_forkfail = 1;
74635+#endif
74636+#ifdef CONFIG_GRKERNSEC_TIME
74637+ grsec_enable_time = 1;
74638+#endif
74639+#ifdef CONFIG_GRKERNSEC_RESLOG
74640+ grsec_resource_logging = 1;
74641+#endif
74642+#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK
74643+ grsec_enable_chroot_findtask = 1;
74644+#endif
74645+#ifdef CONFIG_GRKERNSEC_CHROOT_UNIX
74646+ grsec_enable_chroot_unix = 1;
74647+#endif
74648+#ifdef CONFIG_GRKERNSEC_CHROOT_MOUNT
74649+ grsec_enable_chroot_mount = 1;
74650+#endif
74651+#ifdef CONFIG_GRKERNSEC_CHROOT_FCHDIR
74652+ grsec_enable_chroot_fchdir = 1;
74653+#endif
74654+#ifdef CONFIG_GRKERNSEC_CHROOT_SHMAT
74655+ grsec_enable_chroot_shmat = 1;
74656+#endif
74657+#ifdef CONFIG_GRKERNSEC_AUDIT_PTRACE
74658+ grsec_enable_audit_ptrace = 1;
74659+#endif
74660+#ifdef CONFIG_GRKERNSEC_CHROOT_DOUBLE
74661+ grsec_enable_chroot_double = 1;
74662+#endif
74663+#ifdef CONFIG_GRKERNSEC_CHROOT_PIVOT
74664+ grsec_enable_chroot_pivot = 1;
74665+#endif
74666+#ifdef CONFIG_GRKERNSEC_CHROOT_CHDIR
74667+ grsec_enable_chroot_chdir = 1;
74668+#endif
74669+#ifdef CONFIG_GRKERNSEC_CHROOT_CHMOD
74670+ grsec_enable_chroot_chmod = 1;
74671+#endif
74672+#ifdef CONFIG_GRKERNSEC_CHROOT_MKNOD
74673+ grsec_enable_chroot_mknod = 1;
74674+#endif
74675+#ifdef CONFIG_GRKERNSEC_CHROOT_NICE
74676+ grsec_enable_chroot_nice = 1;
74677+#endif
74678+#ifdef CONFIG_GRKERNSEC_CHROOT_EXECLOG
74679+ grsec_enable_chroot_execlog = 1;
74680+#endif
74681+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
74682+ grsec_enable_chroot_caps = 1;
74683+#endif
74684+#ifdef CONFIG_GRKERNSEC_CHROOT_SYSCTL
74685+ grsec_enable_chroot_sysctl = 1;
74686+#endif
74687+#ifdef CONFIG_GRKERNSEC_SYMLINKOWN
74688+ grsec_enable_symlinkown = 1;
74689+ grsec_symlinkown_gid = KGIDT_INIT(CONFIG_GRKERNSEC_SYMLINKOWN_GID);
74690+#endif
74691+#ifdef CONFIG_GRKERNSEC_TPE
74692+ grsec_enable_tpe = 1;
74693+ grsec_tpe_gid = KGIDT_INIT(CONFIG_GRKERNSEC_TPE_GID);
74694+#ifdef CONFIG_GRKERNSEC_TPE_ALL
74695+ grsec_enable_tpe_all = 1;
74696+#endif
74697+#endif
74698+#ifdef CONFIG_GRKERNSEC_SOCKET_ALL
74699+ grsec_enable_socket_all = 1;
74700+ grsec_socket_all_gid = KGIDT_INIT(CONFIG_GRKERNSEC_SOCKET_ALL_GID);
74701+#endif
74702+#ifdef CONFIG_GRKERNSEC_SOCKET_CLIENT
74703+ grsec_enable_socket_client = 1;
74704+ grsec_socket_client_gid = KGIDT_INIT(CONFIG_GRKERNSEC_SOCKET_CLIENT_GID);
74705+#endif
74706+#ifdef CONFIG_GRKERNSEC_SOCKET_SERVER
74707+ grsec_enable_socket_server = 1;
74708+ grsec_socket_server_gid = KGIDT_INIT(CONFIG_GRKERNSEC_SOCKET_SERVER_GID);
74709+#endif
74710+#endif
74711+#ifdef CONFIG_GRKERNSEC_DENYUSB_FORCE
74712+ grsec_deny_new_usb = 1;
74713+#endif
74714+
74715+ return;
74716+}
74717diff --git a/grsecurity/grsec_ipc.c b/grsecurity/grsec_ipc.c
74718new file mode 100644
74719index 0000000..1773300
74720--- /dev/null
74721+++ b/grsecurity/grsec_ipc.c
74722@@ -0,0 +1,48 @@
74723+#include <linux/kernel.h>
74724+#include <linux/mm.h>
74725+#include <linux/sched.h>
74726+#include <linux/file.h>
74727+#include <linux/ipc.h>
74728+#include <linux/ipc_namespace.h>
74729+#include <linux/grsecurity.h>
74730+#include <linux/grinternal.h>
74731+
74732+int
74733+gr_ipc_permitted(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp, int requested_mode, int granted_mode)
74734+{
74735+#ifdef CONFIG_GRKERNSEC_HARDEN_IPC
74736+ int write;
74737+ int orig_granted_mode;
74738+ kuid_t euid;
74739+ kgid_t egid;
74740+
74741+ if (!grsec_enable_harden_ipc)
74742+ return 1;
74743+
74744+ euid = current_euid();
74745+ egid = current_egid();
74746+
74747+ write = requested_mode & 00002;
74748+ orig_granted_mode = ipcp->mode;
74749+
74750+ if (uid_eq(euid, ipcp->cuid) || uid_eq(euid, ipcp->uid))
74751+ orig_granted_mode >>= 6;
74752+ else {
74753+ /* if likely wrong permissions, lock to user */
74754+ if (orig_granted_mode & 0007)
74755+ orig_granted_mode = 0;
74756+ /* otherwise do a egid-only check */
74757+ else if (gid_eq(egid, ipcp->cgid) || gid_eq(egid, ipcp->gid))
74758+ orig_granted_mode >>= 3;
74759+ /* otherwise, no access */
74760+ else
74761+ orig_granted_mode = 0;
74762+ }
74763+ if (!(requested_mode & ~granted_mode & 0007) && (requested_mode & ~orig_granted_mode & 0007) &&
74764+ !ns_capable_nolog(ns->user_ns, CAP_IPC_OWNER)) {
74765+ gr_log_str_int(GR_DONT_AUDIT, GR_IPC_DENIED_MSG, write ? "write" : "read", GR_GLOBAL_UID(ipcp->cuid));
74766+ return 0;
74767+ }
74768+#endif
74769+ return 1;
74770+}
74771diff --git a/grsecurity/grsec_link.c b/grsecurity/grsec_link.c
74772new file mode 100644
74773index 0000000..5e05e20
74774--- /dev/null
74775+++ b/grsecurity/grsec_link.c
74776@@ -0,0 +1,58 @@
74777+#include <linux/kernel.h>
74778+#include <linux/sched.h>
74779+#include <linux/fs.h>
74780+#include <linux/file.h>
74781+#include <linux/grinternal.h>
74782+
74783+int gr_handle_symlink_owner(const struct path *link, const struct inode *target)
74784+{
74785+#ifdef CONFIG_GRKERNSEC_SYMLINKOWN
74786+ const struct inode *link_inode = link->dentry->d_inode;
74787+
74788+ if (grsec_enable_symlinkown && in_group_p(grsec_symlinkown_gid) &&
74789+ /* ignore root-owned links, e.g. /proc/self */
74790+ gr_is_global_nonroot(link_inode->i_uid) && target &&
74791+ !uid_eq(link_inode->i_uid, target->i_uid)) {
74792+ gr_log_fs_int2(GR_DONT_AUDIT, GR_SYMLINKOWNER_MSG, link->dentry, link->mnt, link_inode->i_uid, target->i_uid);
74793+ return 1;
74794+ }
74795+#endif
74796+ return 0;
74797+}
74798+
74799+int
74800+gr_handle_follow_link(const struct inode *parent,
74801+ const struct inode *inode,
74802+ const struct dentry *dentry, const struct vfsmount *mnt)
74803+{
74804+#ifdef CONFIG_GRKERNSEC_LINK
74805+ const struct cred *cred = current_cred();
74806+
74807+ if (grsec_enable_link && S_ISLNK(inode->i_mode) &&
74808+ (parent->i_mode & S_ISVTX) && !uid_eq(parent->i_uid, inode->i_uid) &&
74809+ (parent->i_mode & S_IWOTH) && !uid_eq(cred->fsuid, inode->i_uid)) {
74810+ gr_log_fs_int2(GR_DONT_AUDIT, GR_SYMLINK_MSG, dentry, mnt, inode->i_uid, inode->i_gid);
74811+ return -EACCES;
74812+ }
74813+#endif
74814+ return 0;
74815+}
74816+
74817+int
74818+gr_handle_hardlink(const struct dentry *dentry,
74819+ const struct vfsmount *mnt,
74820+ struct inode *inode, const int mode, const struct filename *to)
74821+{
74822+#ifdef CONFIG_GRKERNSEC_LINK
74823+ const struct cred *cred = current_cred();
74824+
74825+ if (grsec_enable_link && !uid_eq(cred->fsuid, inode->i_uid) &&
74826+ (!S_ISREG(mode) || is_privileged_binary(dentry) ||
74827+ (inode_permission(inode, MAY_READ | MAY_WRITE))) &&
74828+ !capable(CAP_FOWNER) && gr_is_global_nonroot(cred->uid)) {
74829+ gr_log_fs_int2_str(GR_DONT_AUDIT, GR_HARDLINK_MSG, dentry, mnt, inode->i_uid, inode->i_gid, to->name);
74830+ return -EPERM;
74831+ }
74832+#endif
74833+ return 0;
74834+}
74835diff --git a/grsecurity/grsec_log.c b/grsecurity/grsec_log.c
74836new file mode 100644
74837index 0000000..dbe0a6b
74838--- /dev/null
74839+++ b/grsecurity/grsec_log.c
74840@@ -0,0 +1,341 @@
74841+#include <linux/kernel.h>
74842+#include <linux/sched.h>
74843+#include <linux/file.h>
74844+#include <linux/tty.h>
74845+#include <linux/fs.h>
74846+#include <linux/mm.h>
74847+#include <linux/grinternal.h>
74848+
74849+#ifdef CONFIG_TREE_PREEMPT_RCU
74850+#define DISABLE_PREEMPT() preempt_disable()
74851+#define ENABLE_PREEMPT() preempt_enable()
74852+#else
74853+#define DISABLE_PREEMPT()
74854+#define ENABLE_PREEMPT()
74855+#endif
74856+
74857+#define BEGIN_LOCKS(x) \
74858+ DISABLE_PREEMPT(); \
74859+ rcu_read_lock(); \
74860+ read_lock(&tasklist_lock); \
74861+ read_lock(&grsec_exec_file_lock); \
74862+ if (x != GR_DO_AUDIT) \
74863+ spin_lock(&grsec_alert_lock); \
74864+ else \
74865+ spin_lock(&grsec_audit_lock)
74866+
74867+#define END_LOCKS(x) \
74868+ if (x != GR_DO_AUDIT) \
74869+ spin_unlock(&grsec_alert_lock); \
74870+ else \
74871+ spin_unlock(&grsec_audit_lock); \
74872+ read_unlock(&grsec_exec_file_lock); \
74873+ read_unlock(&tasklist_lock); \
74874+ rcu_read_unlock(); \
74875+ ENABLE_PREEMPT(); \
74876+ if (x == GR_DONT_AUDIT) \
74877+ gr_handle_alertkill(current)
74878+
74879+enum {
74880+ FLOODING,
74881+ NO_FLOODING
74882+};
74883+
74884+extern char *gr_alert_log_fmt;
74885+extern char *gr_audit_log_fmt;
74886+extern char *gr_alert_log_buf;
74887+extern char *gr_audit_log_buf;
74888+
74889+static int gr_log_start(int audit)
74890+{
74891+ char *loglevel = (audit == GR_DO_AUDIT) ? KERN_INFO : KERN_ALERT;
74892+ char *fmt = (audit == GR_DO_AUDIT) ? gr_audit_log_fmt : gr_alert_log_fmt;
74893+ char *buf = (audit == GR_DO_AUDIT) ? gr_audit_log_buf : gr_alert_log_buf;
74894+#if (CONFIG_GRKERNSEC_FLOODTIME > 0 && CONFIG_GRKERNSEC_FLOODBURST > 0)
74895+ unsigned long curr_secs = get_seconds();
74896+
74897+ if (audit == GR_DO_AUDIT)
74898+ goto set_fmt;
74899+
74900+ if (!grsec_alert_wtime || time_after(curr_secs, grsec_alert_wtime + CONFIG_GRKERNSEC_FLOODTIME)) {
74901+ grsec_alert_wtime = curr_secs;
74902+ grsec_alert_fyet = 0;
74903+ } else if (time_before_eq(curr_secs, grsec_alert_wtime + CONFIG_GRKERNSEC_FLOODTIME)
74904+ && (grsec_alert_fyet < CONFIG_GRKERNSEC_FLOODBURST)) {
74905+ grsec_alert_fyet++;
74906+ } else if (grsec_alert_fyet == CONFIG_GRKERNSEC_FLOODBURST) {
74907+ grsec_alert_wtime = curr_secs;
74908+ grsec_alert_fyet++;
74909+ printk(KERN_ALERT "grsec: more alerts, logging disabled for %d seconds\n", CONFIG_GRKERNSEC_FLOODTIME);
74910+ return FLOODING;
74911+ }
74912+ else return FLOODING;
74913+
74914+set_fmt:
74915+#endif
74916+ memset(buf, 0, PAGE_SIZE);
74917+ if (current->signal->curr_ip && gr_acl_is_enabled()) {
74918+ sprintf(fmt, "%s%s", loglevel, "grsec: From %pI4: (%.64s:%c:%.950s) ");
74919+ snprintf(buf, PAGE_SIZE - 1, fmt, &current->signal->curr_ip, current->role->rolename, gr_roletype_to_char(), current->acl->filename);
74920+ } else if (current->signal->curr_ip) {
74921+ sprintf(fmt, "%s%s", loglevel, "grsec: From %pI4: ");
74922+ snprintf(buf, PAGE_SIZE - 1, fmt, &current->signal->curr_ip);
74923+ } else if (gr_acl_is_enabled()) {
74924+ sprintf(fmt, "%s%s", loglevel, "grsec: (%.64s:%c:%.950s) ");
74925+ snprintf(buf, PAGE_SIZE - 1, fmt, current->role->rolename, gr_roletype_to_char(), current->acl->filename);
74926+ } else {
74927+ sprintf(fmt, "%s%s", loglevel, "grsec: ");
74928+ strcpy(buf, fmt);
74929+ }
74930+
74931+ return NO_FLOODING;
74932+}
74933+
74934+static void gr_log_middle(int audit, const char *msg, va_list ap)
74935+ __attribute__ ((format (printf, 2, 0)));
74936+
74937+static void gr_log_middle(int audit, const char *msg, va_list ap)
74938+{
74939+ char *buf = (audit == GR_DO_AUDIT) ? gr_audit_log_buf : gr_alert_log_buf;
74940+ unsigned int len = strlen(buf);
74941+
74942+ vsnprintf(buf + len, PAGE_SIZE - len - 1, msg, ap);
74943+
74944+ return;
74945+}
74946+
74947+static void gr_log_middle_varargs(int audit, const char *msg, ...)
74948+ __attribute__ ((format (printf, 2, 3)));
74949+
74950+static void gr_log_middle_varargs(int audit, const char *msg, ...)
74951+{
74952+ char *buf = (audit == GR_DO_AUDIT) ? gr_audit_log_buf : gr_alert_log_buf;
74953+ unsigned int len = strlen(buf);
74954+ va_list ap;
74955+
74956+ va_start(ap, msg);
74957+ vsnprintf(buf + len, PAGE_SIZE - len - 1, msg, ap);
74958+ va_end(ap);
74959+
74960+ return;
74961+}
74962+
74963+static void gr_log_end(int audit, int append_default)
74964+{
74965+ char *buf = (audit == GR_DO_AUDIT) ? gr_audit_log_buf : gr_alert_log_buf;
74966+ if (append_default) {
74967+ struct task_struct *task = current;
74968+ struct task_struct *parent = task->real_parent;
74969+ const struct cred *cred = __task_cred(task);
74970+ const struct cred *pcred = __task_cred(parent);
74971+ unsigned int len = strlen(buf);
74972+
74973+ snprintf(buf + len, PAGE_SIZE - len - 1, DEFAULTSECMSG, gr_task_fullpath(task), task->comm, task_pid_nr(task), GR_GLOBAL_UID(cred->uid), GR_GLOBAL_UID(cred->euid), GR_GLOBAL_GID(cred->gid), GR_GLOBAL_GID(cred->egid), gr_parent_task_fullpath(task), parent->comm, task_pid_nr(task->real_parent), GR_GLOBAL_UID(pcred->uid), GR_GLOBAL_UID(pcred->euid), GR_GLOBAL_GID(pcred->gid), GR_GLOBAL_GID(pcred->egid));
74974+ }
74975+
74976+ printk("%s\n", buf);
74977+
74978+ return;
74979+}
74980+
74981+void gr_log_varargs(int audit, const char *msg, int argtypes, ...)
74982+{
74983+ int logtype;
74984+ char *result = (audit == GR_DO_AUDIT) ? "successful" : "denied";
74985+ char *str1 = NULL, *str2 = NULL, *str3 = NULL;
74986+ void *voidptr = NULL;
74987+ int num1 = 0, num2 = 0;
74988+ unsigned long ulong1 = 0, ulong2 = 0;
74989+ struct dentry *dentry = NULL;
74990+ struct vfsmount *mnt = NULL;
74991+ struct file *file = NULL;
74992+ struct task_struct *task = NULL;
74993+ struct vm_area_struct *vma = NULL;
74994+ const struct cred *cred, *pcred;
74995+ va_list ap;
74996+
74997+ BEGIN_LOCKS(audit);
74998+ logtype = gr_log_start(audit);
74999+ if (logtype == FLOODING) {
75000+ END_LOCKS(audit);
75001+ return;
75002+ }
75003+ va_start(ap, argtypes);
75004+ switch (argtypes) {
75005+ case GR_TTYSNIFF:
75006+ task = va_arg(ap, struct task_struct *);
75007+ gr_log_middle_varargs(audit, msg, &task->signal->curr_ip, gr_task_fullpath0(task), task->comm, task_pid_nr(task), gr_parent_task_fullpath0(task), task->real_parent->comm, task_pid_nr(task->real_parent));
75008+ break;
75009+ case GR_SYSCTL_HIDDEN:
75010+ str1 = va_arg(ap, char *);
75011+ gr_log_middle_varargs(audit, msg, result, str1);
75012+ break;
75013+ case GR_RBAC:
75014+ dentry = va_arg(ap, struct dentry *);
75015+ mnt = va_arg(ap, struct vfsmount *);
75016+ gr_log_middle_varargs(audit, msg, result, gr_to_filename(dentry, mnt));
75017+ break;
75018+ case GR_RBAC_STR:
75019+ dentry = va_arg(ap, struct dentry *);
75020+ mnt = va_arg(ap, struct vfsmount *);
75021+ str1 = va_arg(ap, char *);
75022+ gr_log_middle_varargs(audit, msg, result, gr_to_filename(dentry, mnt), str1);
75023+ break;
75024+ case GR_STR_RBAC:
75025+ str1 = va_arg(ap, char *);
75026+ dentry = va_arg(ap, struct dentry *);
75027+ mnt = va_arg(ap, struct vfsmount *);
75028+ gr_log_middle_varargs(audit, msg, result, str1, gr_to_filename(dentry, mnt));
75029+ break;
75030+ case GR_RBAC_MODE2:
75031+ dentry = va_arg(ap, struct dentry *);
75032+ mnt = va_arg(ap, struct vfsmount *);
75033+ str1 = va_arg(ap, char *);
75034+ str2 = va_arg(ap, char *);
75035+ gr_log_middle_varargs(audit, msg, result, gr_to_filename(dentry, mnt), str1, str2);
75036+ break;
75037+ case GR_RBAC_MODE3:
75038+ dentry = va_arg(ap, struct dentry *);
75039+ mnt = va_arg(ap, struct vfsmount *);
75040+ str1 = va_arg(ap, char *);
75041+ str2 = va_arg(ap, char *);
75042+ str3 = va_arg(ap, char *);
75043+ gr_log_middle_varargs(audit, msg, result, gr_to_filename(dentry, mnt), str1, str2, str3);
75044+ break;
75045+ case GR_FILENAME:
75046+ dentry = va_arg(ap, struct dentry *);
75047+ mnt = va_arg(ap, struct vfsmount *);
75048+ gr_log_middle_varargs(audit, msg, gr_to_filename(dentry, mnt));
75049+ break;
75050+ case GR_STR_FILENAME:
75051+ str1 = va_arg(ap, char *);
75052+ dentry = va_arg(ap, struct dentry *);
75053+ mnt = va_arg(ap, struct vfsmount *);
75054+ gr_log_middle_varargs(audit, msg, str1, gr_to_filename(dentry, mnt));
75055+ break;
75056+ case GR_FILENAME_STR:
75057+ dentry = va_arg(ap, struct dentry *);
75058+ mnt = va_arg(ap, struct vfsmount *);
75059+ str1 = va_arg(ap, char *);
75060+ gr_log_middle_varargs(audit, msg, gr_to_filename(dentry, mnt), str1);
75061+ break;
75062+ case GR_FILENAME_TWO_INT:
75063+ dentry = va_arg(ap, struct dentry *);
75064+ mnt = va_arg(ap, struct vfsmount *);
75065+ num1 = va_arg(ap, int);
75066+ num2 = va_arg(ap, int);
75067+ gr_log_middle_varargs(audit, msg, gr_to_filename(dentry, mnt), num1, num2);
75068+ break;
75069+ case GR_FILENAME_TWO_INT_STR:
75070+ dentry = va_arg(ap, struct dentry *);
75071+ mnt = va_arg(ap, struct vfsmount *);
75072+ num1 = va_arg(ap, int);
75073+ num2 = va_arg(ap, int);
75074+ str1 = va_arg(ap, char *);
75075+ gr_log_middle_varargs(audit, msg, gr_to_filename(dentry, mnt), num1, num2, str1);
75076+ break;
75077+ case GR_TEXTREL:
75078+ file = va_arg(ap, struct file *);
75079+ ulong1 = va_arg(ap, unsigned long);
75080+ ulong2 = va_arg(ap, unsigned long);
75081+ gr_log_middle_varargs(audit, msg, file ? gr_to_filename(file->f_path.dentry, file->f_path.mnt) : "<anonymous mapping>", ulong1, ulong2);
75082+ break;
75083+ case GR_PTRACE:
75084+ task = va_arg(ap, struct task_struct *);
75085+ gr_log_middle_varargs(audit, msg, task->exec_file ? gr_to_filename(task->exec_file->f_path.dentry, task->exec_file->f_path.mnt) : "(none)", task->comm, task_pid_nr(task));
75086+ break;
75087+ case GR_RESOURCE:
75088+ task = va_arg(ap, struct task_struct *);
75089+ cred = __task_cred(task);
75090+ pcred = __task_cred(task->real_parent);
75091+ ulong1 = va_arg(ap, unsigned long);
75092+ str1 = va_arg(ap, char *);
75093+ ulong2 = va_arg(ap, unsigned long);
75094+ gr_log_middle_varargs(audit, msg, ulong1, str1, ulong2, gr_task_fullpath(task), task->comm, task_pid_nr(task), GR_GLOBAL_UID(cred->uid), GR_GLOBAL_UID(cred->euid), GR_GLOBAL_GID(cred->gid), GR_GLOBAL_GID(cred->egid), gr_parent_task_fullpath(task), task->real_parent->comm, task_pid_nr(task->real_parent), GR_GLOBAL_UID(pcred->uid), GR_GLOBAL_UID(pcred->euid), GR_GLOBAL_GID(pcred->gid), GR_GLOBAL_GID(pcred->egid));
75095+ break;
75096+ case GR_CAP:
75097+ task = va_arg(ap, struct task_struct *);
75098+ cred = __task_cred(task);
75099+ pcred = __task_cred(task->real_parent);
75100+ str1 = va_arg(ap, char *);
75101+ gr_log_middle_varargs(audit, msg, str1, gr_task_fullpath(task), task->comm, task_pid_nr(task), GR_GLOBAL_UID(cred->uid), GR_GLOBAL_UID(cred->euid), GR_GLOBAL_GID(cred->gid), GR_GLOBAL_GID(cred->egid), gr_parent_task_fullpath(task), task->real_parent->comm, task_pid_nr(task->real_parent), GR_GLOBAL_UID(pcred->uid), GR_GLOBAL_UID(pcred->euid), GR_GLOBAL_GID(pcred->gid), GR_GLOBAL_GID(pcred->egid));
75102+ break;
75103+ case GR_SIG:
75104+ str1 = va_arg(ap, char *);
75105+ voidptr = va_arg(ap, void *);
75106+ gr_log_middle_varargs(audit, msg, str1, voidptr);
75107+ break;
75108+ case GR_SIG2:
75109+ task = va_arg(ap, struct task_struct *);
75110+ cred = __task_cred(task);
75111+ pcred = __task_cred(task->real_parent);
75112+ num1 = va_arg(ap, int);
75113+ gr_log_middle_varargs(audit, msg, num1, gr_task_fullpath0(task), task->comm, task_pid_nr(task), GR_GLOBAL_UID(cred->uid), GR_GLOBAL_UID(cred->euid), GR_GLOBAL_GID(cred->gid), GR_GLOBAL_GID(cred->egid), gr_parent_task_fullpath0(task), task->real_parent->comm, task_pid_nr(task->real_parent), GR_GLOBAL_UID(pcred->uid), GR_GLOBAL_UID(pcred->euid), GR_GLOBAL_GID(pcred->gid), GR_GLOBAL_GID(pcred->egid));
75114+ break;
75115+ case GR_CRASH1:
75116+ task = va_arg(ap, struct task_struct *);
75117+ cred = __task_cred(task);
75118+ pcred = __task_cred(task->real_parent);
75119+ ulong1 = va_arg(ap, unsigned long);
75120+ gr_log_middle_varargs(audit, msg, gr_task_fullpath(task), task->comm, task_pid_nr(task), GR_GLOBAL_UID(cred->uid), GR_GLOBAL_UID(cred->euid), GR_GLOBAL_GID(cred->gid), GR_GLOBAL_GID(cred->egid), gr_parent_task_fullpath(task), task->real_parent->comm, task_pid_nr(task->real_parent), GR_GLOBAL_UID(pcred->uid), GR_GLOBAL_UID(pcred->euid), GR_GLOBAL_GID(pcred->gid), GR_GLOBAL_GID(pcred->egid), GR_GLOBAL_UID(cred->uid), ulong1);
75121+ break;
75122+ case GR_CRASH2:
75123+ task = va_arg(ap, struct task_struct *);
75124+ cred = __task_cred(task);
75125+ pcred = __task_cred(task->real_parent);
75126+ ulong1 = va_arg(ap, unsigned long);
75127+ gr_log_middle_varargs(audit, msg, gr_task_fullpath(task), task->comm, task_pid_nr(task), GR_GLOBAL_UID(cred->uid), GR_GLOBAL_UID(cred->euid), GR_GLOBAL_GID(cred->gid), GR_GLOBAL_GID(cred->egid), gr_parent_task_fullpath(task), task->real_parent->comm, task_pid_nr(task->real_parent), GR_GLOBAL_UID(pcred->uid), GR_GLOBAL_UID(pcred->euid), GR_GLOBAL_GID(pcred->gid), GR_GLOBAL_GID(pcred->egid), ulong1);
75128+ break;
75129+ case GR_RWXMAP:
75130+ file = va_arg(ap, struct file *);
75131+ gr_log_middle_varargs(audit, msg, file ? gr_to_filename(file->f_path.dentry, file->f_path.mnt) : "<anonymous mapping>");
75132+ break;
75133+ case GR_RWXMAPVMA:
75134+ vma = va_arg(ap, struct vm_area_struct *);
75135+ if (vma->vm_file)
75136+ str1 = gr_to_filename(vma->vm_file->f_path.dentry, vma->vm_file->f_path.mnt);
75137+ else if (vma->vm_flags & (VM_GROWSDOWN | VM_GROWSUP))
75138+ str1 = "<stack>";
75139+ else if (vma->vm_start <= current->mm->brk &&
75140+ vma->vm_end >= current->mm->start_brk)
75141+ str1 = "<heap>";
75142+ else
75143+ str1 = "<anonymous mapping>";
75144+ gr_log_middle_varargs(audit, msg, str1);
75145+ break;
75146+ case GR_PSACCT:
75147+ {
75148+ unsigned int wday, cday;
75149+ __u8 whr, chr;
75150+ __u8 wmin, cmin;
75151+ __u8 wsec, csec;
75152+ char cur_tty[64] = { 0 };
75153+ char parent_tty[64] = { 0 };
75154+
75155+ task = va_arg(ap, struct task_struct *);
75156+ wday = va_arg(ap, unsigned int);
75157+ cday = va_arg(ap, unsigned int);
75158+ whr = va_arg(ap, int);
75159+ chr = va_arg(ap, int);
75160+ wmin = va_arg(ap, int);
75161+ cmin = va_arg(ap, int);
75162+ wsec = va_arg(ap, int);
75163+ csec = va_arg(ap, int);
75164+ ulong1 = va_arg(ap, unsigned long);
75165+ cred = __task_cred(task);
75166+ pcred = __task_cred(task->real_parent);
75167+
75168+ gr_log_middle_varargs(audit, msg, gr_task_fullpath(task), task->comm, task_pid_nr(task), &task->signal->curr_ip, tty_name(task->signal->tty, cur_tty), GR_GLOBAL_UID(cred->uid), GR_GLOBAL_UID(cred->euid), GR_GLOBAL_GID(cred->gid), GR_GLOBAL_GID(cred->egid), wday, whr, wmin, wsec, cday, chr, cmin, csec, (task->flags & PF_SIGNALED) ? "killed by signal" : "exited", ulong1, gr_parent_task_fullpath(task), task->real_parent->comm, task_pid_nr(task->real_parent), &task->real_parent->signal->curr_ip, tty_name(task->real_parent->signal->tty, parent_tty), GR_GLOBAL_UID(pcred->uid), GR_GLOBAL_UID(pcred->euid), GR_GLOBAL_GID(pcred->gid), GR_GLOBAL_GID(pcred->egid));
75169+ }
75170+ break;
75171+ default:
75172+ gr_log_middle(audit, msg, ap);
75173+ }
75174+ va_end(ap);
75175+ // these don't need DEFAULTSECARGS printed on the end
75176+ if (argtypes == GR_CRASH1 || argtypes == GR_CRASH2)
75177+ gr_log_end(audit, 0);
75178+ else
75179+ gr_log_end(audit, 1);
75180+ END_LOCKS(audit);
75181+}
75182diff --git a/grsecurity/grsec_mem.c b/grsecurity/grsec_mem.c
75183new file mode 100644
75184index 0000000..0e39d8c
75185--- /dev/null
75186+++ b/grsecurity/grsec_mem.c
75187@@ -0,0 +1,48 @@
75188+#include <linux/kernel.h>
75189+#include <linux/sched.h>
75190+#include <linux/mm.h>
75191+#include <linux/mman.h>
75192+#include <linux/module.h>
75193+#include <linux/grinternal.h>
75194+
75195+void gr_handle_msr_write(void)
75196+{
75197+ gr_log_noargs(GR_DONT_AUDIT, GR_MSRWRITE_MSG);
75198+ return;
75199+}
75200+EXPORT_SYMBOL_GPL(gr_handle_msr_write);
75201+
75202+void
75203+gr_handle_ioperm(void)
75204+{
75205+ gr_log_noargs(GR_DONT_AUDIT, GR_IOPERM_MSG);
75206+ return;
75207+}
75208+
75209+void
75210+gr_handle_iopl(void)
75211+{
75212+ gr_log_noargs(GR_DONT_AUDIT, GR_IOPL_MSG);
75213+ return;
75214+}
75215+
75216+void
75217+gr_handle_mem_readwrite(u64 from, u64 to)
75218+{
75219+ gr_log_two_u64(GR_DONT_AUDIT, GR_MEM_READWRITE_MSG, from, to);
75220+ return;
75221+}
75222+
75223+void
75224+gr_handle_vm86(void)
75225+{
75226+ gr_log_noargs(GR_DONT_AUDIT, GR_VM86_MSG);
75227+ return;
75228+}
75229+
75230+void
75231+gr_log_badprocpid(const char *entry)
75232+{
75233+ gr_log_str(GR_DONT_AUDIT, GR_BADPROCPID_MSG, entry);
75234+ return;
75235+}
75236diff --git a/grsecurity/grsec_mount.c b/grsecurity/grsec_mount.c
75237new file mode 100644
75238index 0000000..cd9e124
75239--- /dev/null
75240+++ b/grsecurity/grsec_mount.c
75241@@ -0,0 +1,65 @@
75242+#include <linux/kernel.h>
75243+#include <linux/sched.h>
75244+#include <linux/mount.h>
75245+#include <linux/major.h>
75246+#include <linux/grsecurity.h>
75247+#include <linux/grinternal.h>
75248+
75249+void
75250+gr_log_remount(const char *devname, const int retval)
75251+{
75252+#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
75253+ if (grsec_enable_mount && (retval >= 0))
75254+ gr_log_str(GR_DO_AUDIT, GR_REMOUNT_AUDIT_MSG, devname ? devname : "none");
75255+#endif
75256+ return;
75257+}
75258+
75259+void
75260+gr_log_unmount(const char *devname, const int retval)
75261+{
75262+#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
75263+ if (grsec_enable_mount && (retval >= 0))
75264+ gr_log_str(GR_DO_AUDIT, GR_UNMOUNT_AUDIT_MSG, devname ? devname : "none");
75265+#endif
75266+ return;
75267+}
75268+
75269+void
75270+gr_log_mount(const char *from, const char *to, const int retval)
75271+{
75272+#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
75273+ if (grsec_enable_mount && (retval >= 0))
75274+ gr_log_str_str(GR_DO_AUDIT, GR_MOUNT_AUDIT_MSG, from ? from : "none", to);
75275+#endif
75276+ return;
75277+}
75278+
75279+int
75280+gr_handle_rofs_mount(struct dentry *dentry, struct vfsmount *mnt, int mnt_flags)
75281+{
75282+#ifdef CONFIG_GRKERNSEC_ROFS
75283+ if (grsec_enable_rofs && !(mnt_flags & MNT_READONLY)) {
75284+ gr_log_fs_generic(GR_DO_AUDIT, GR_ROFS_MOUNT_MSG, dentry, mnt);
75285+ return -EPERM;
75286+ } else
75287+ return 0;
75288+#endif
75289+ return 0;
75290+}
75291+
75292+int
75293+gr_handle_rofs_blockwrite(struct dentry *dentry, struct vfsmount *mnt, int acc_mode)
75294+{
75295+#ifdef CONFIG_GRKERNSEC_ROFS
75296+ struct inode *inode = dentry->d_inode;
75297+
75298+ if (grsec_enable_rofs && (acc_mode & MAY_WRITE) &&
75299+ inode && (S_ISBLK(inode->i_mode) || (S_ISCHR(inode->i_mode) && imajor(inode) == RAW_MAJOR))) {
75300+ gr_log_fs_generic(GR_DO_AUDIT, GR_ROFS_BLOCKWRITE_MSG, dentry, mnt);
75301+ return -EPERM;
75302+ } else
75303+ return 0;
75304+#endif
75305+ return 0;
75306+}
75307diff --git a/grsecurity/grsec_pax.c b/grsecurity/grsec_pax.c
75308new file mode 100644
75309index 0000000..6ee9d50
75310--- /dev/null
75311+++ b/grsecurity/grsec_pax.c
75312@@ -0,0 +1,45 @@
75313+#include <linux/kernel.h>
75314+#include <linux/sched.h>
75315+#include <linux/mm.h>
75316+#include <linux/file.h>
75317+#include <linux/grinternal.h>
75318+#include <linux/grsecurity.h>
75319+
75320+void
75321+gr_log_textrel(struct vm_area_struct * vma)
75322+{
75323+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
75324+ if (grsec_enable_log_rwxmaps)
75325+ gr_log_textrel_ulong_ulong(GR_DONT_AUDIT, GR_TEXTREL_AUDIT_MSG, vma->vm_file, vma->vm_start, vma->vm_pgoff);
75326+#endif
75327+ return;
75328+}
75329+
75330+void gr_log_ptgnustack(struct file *file)
75331+{
75332+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
75333+ if (grsec_enable_log_rwxmaps)
75334+ gr_log_rwxmap(GR_DONT_AUDIT, GR_PTGNUSTACK_MSG, file);
75335+#endif
75336+ return;
75337+}
75338+
75339+void
75340+gr_log_rwxmmap(struct file *file)
75341+{
75342+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
75343+ if (grsec_enable_log_rwxmaps)
75344+ gr_log_rwxmap(GR_DONT_AUDIT, GR_RWXMMAP_MSG, file);
75345+#endif
75346+ return;
75347+}
75348+
75349+void
75350+gr_log_rwxmprotect(struct vm_area_struct *vma)
75351+{
75352+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
75353+ if (grsec_enable_log_rwxmaps)
75354+ gr_log_rwxmap_vma(GR_DONT_AUDIT, GR_RWXMPROTECT_MSG, vma);
75355+#endif
75356+ return;
75357+}
75358diff --git a/grsecurity/grsec_proc.c b/grsecurity/grsec_proc.c
75359new file mode 100644
75360index 0000000..2005a3a
75361--- /dev/null
75362+++ b/grsecurity/grsec_proc.c
75363@@ -0,0 +1,20 @@
75364+#include <linux/kernel.h>
75365+#include <linux/sched.h>
75366+#include <linux/grsecurity.h>
75367+#include <linux/grinternal.h>
75368+
75369+int gr_proc_is_restricted(void)
75370+{
75371+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
75372+ const struct cred *cred = current_cred();
75373+#endif
75374+
75375+#ifdef CONFIG_GRKERNSEC_PROC_USER
75376+ if (!uid_eq(cred->fsuid, GLOBAL_ROOT_UID))
75377+ return -EACCES;
75378+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
75379+ if (!uid_eq(cred->fsuid, GLOBAL_ROOT_UID) && !in_group_p(grsec_proc_gid))
75380+ return -EACCES;
75381+#endif
75382+ return 0;
75383+}
75384diff --git a/grsecurity/grsec_ptrace.c b/grsecurity/grsec_ptrace.c
75385new file mode 100644
75386index 0000000..f7f29aa
75387--- /dev/null
75388+++ b/grsecurity/grsec_ptrace.c
75389@@ -0,0 +1,30 @@
75390+#include <linux/kernel.h>
75391+#include <linux/sched.h>
75392+#include <linux/grinternal.h>
75393+#include <linux/security.h>
75394+
75395+void
75396+gr_audit_ptrace(struct task_struct *task)
75397+{
75398+#ifdef CONFIG_GRKERNSEC_AUDIT_PTRACE
75399+ if (grsec_enable_audit_ptrace)
75400+ gr_log_ptrace(GR_DO_AUDIT, GR_PTRACE_AUDIT_MSG, task);
75401+#endif
75402+ return;
75403+}
75404+
75405+int
75406+gr_ptrace_readexec(struct file *file, int unsafe_flags)
75407+{
75408+#ifdef CONFIG_GRKERNSEC_PTRACE_READEXEC
75409+ const struct dentry *dentry = file->f_path.dentry;
75410+ const struct vfsmount *mnt = file->f_path.mnt;
75411+
75412+ if (grsec_enable_ptrace_readexec && (unsafe_flags & LSM_UNSAFE_PTRACE) &&
75413+ (inode_permission(dentry->d_inode, MAY_READ) || !gr_acl_handle_open(dentry, mnt, MAY_READ))) {
75414+ gr_log_fs_generic(GR_DONT_AUDIT, GR_PTRACE_READEXEC_MSG, dentry, mnt);
75415+ return -EACCES;
75416+ }
75417+#endif
75418+ return 0;
75419+}
75420diff --git a/grsecurity/grsec_sig.c b/grsecurity/grsec_sig.c
75421new file mode 100644
75422index 0000000..3860c7e
75423--- /dev/null
75424+++ b/grsecurity/grsec_sig.c
75425@@ -0,0 +1,236 @@
75426+#include <linux/kernel.h>
75427+#include <linux/sched.h>
75428+#include <linux/fs.h>
75429+#include <linux/delay.h>
75430+#include <linux/grsecurity.h>
75431+#include <linux/grinternal.h>
75432+#include <linux/hardirq.h>
75433+
75434+char *signames[] = {
75435+ [SIGSEGV] = "Segmentation fault",
75436+ [SIGILL] = "Illegal instruction",
75437+ [SIGABRT] = "Abort",
75438+ [SIGBUS] = "Invalid alignment/Bus error"
75439+};
75440+
75441+void
75442+gr_log_signal(const int sig, const void *addr, const struct task_struct *t)
75443+{
75444+#ifdef CONFIG_GRKERNSEC_SIGNAL
75445+ if (grsec_enable_signal && ((sig == SIGSEGV) || (sig == SIGILL) ||
75446+ (sig == SIGABRT) || (sig == SIGBUS))) {
75447+ if (task_pid_nr(t) == task_pid_nr(current)) {
75448+ gr_log_sig_addr(GR_DONT_AUDIT_GOOD, GR_UNISIGLOG_MSG, signames[sig], addr);
75449+ } else {
75450+ gr_log_sig_task(GR_DONT_AUDIT_GOOD, GR_DUALSIGLOG_MSG, t, sig);
75451+ }
75452+ }
75453+#endif
75454+ return;
75455+}
75456+
75457+int
75458+gr_handle_signal(const struct task_struct *p, const int sig)
75459+{
75460+#ifdef CONFIG_GRKERNSEC
75461+ /* ignore the 0 signal for protected task checks */
75462+ if (task_pid_nr(current) > 1 && sig && gr_check_protected_task(p)) {
75463+ gr_log_sig_task(GR_DONT_AUDIT, GR_SIG_ACL_MSG, p, sig);
75464+ return -EPERM;
75465+ } else if (gr_pid_is_chrooted((struct task_struct *)p)) {
75466+ return -EPERM;
75467+ }
75468+#endif
75469+ return 0;
75470+}
75471+
75472+#ifdef CONFIG_GRKERNSEC
75473+extern int specific_send_sig_info(int sig, struct siginfo *info, struct task_struct *t);
75474+
75475+int gr_fake_force_sig(int sig, struct task_struct *t)
75476+{
75477+ unsigned long int flags;
75478+ int ret, blocked, ignored;
75479+ struct k_sigaction *action;
75480+
75481+ spin_lock_irqsave(&t->sighand->siglock, flags);
75482+ action = &t->sighand->action[sig-1];
75483+ ignored = action->sa.sa_handler == SIG_IGN;
75484+ blocked = sigismember(&t->blocked, sig);
75485+ if (blocked || ignored) {
75486+ action->sa.sa_handler = SIG_DFL;
75487+ if (blocked) {
75488+ sigdelset(&t->blocked, sig);
75489+ recalc_sigpending_and_wake(t);
75490+ }
75491+ }
75492+ if (action->sa.sa_handler == SIG_DFL)
75493+ t->signal->flags &= ~SIGNAL_UNKILLABLE;
75494+ ret = specific_send_sig_info(sig, SEND_SIG_PRIV, t);
75495+
75496+ spin_unlock_irqrestore(&t->sighand->siglock, flags);
75497+
75498+ return ret;
75499+}
75500+#endif
75501+
75502+#define GR_USER_BAN_TIME (15 * 60)
75503+#define GR_DAEMON_BRUTE_TIME (30 * 60)
75504+
75505+void gr_handle_brute_attach(int dumpable)
75506+{
75507+#ifdef CONFIG_GRKERNSEC_BRUTE
75508+ struct task_struct *p = current;
75509+ kuid_t uid = GLOBAL_ROOT_UID;
75510+ int daemon = 0;
75511+
75512+ if (!grsec_enable_brute)
75513+ return;
75514+
75515+ rcu_read_lock();
75516+ read_lock(&tasklist_lock);
75517+ read_lock(&grsec_exec_file_lock);
75518+ if (p->real_parent && gr_is_same_file(p->real_parent->exec_file, p->exec_file)) {
75519+ p->real_parent->brute_expires = get_seconds() + GR_DAEMON_BRUTE_TIME;
75520+ p->real_parent->brute = 1;
75521+ daemon = 1;
75522+ } else {
75523+ const struct cred *cred = __task_cred(p), *cred2;
75524+ struct task_struct *tsk, *tsk2;
75525+
75526+ if (dumpable != SUID_DUMP_USER && gr_is_global_nonroot(cred->uid)) {
75527+ struct user_struct *user;
75528+
75529+ uid = cred->uid;
75530+
75531+ /* this is put upon execution past expiration */
75532+ user = find_user(uid);
75533+ if (user == NULL)
75534+ goto unlock;
75535+ user->suid_banned = 1;
75536+ user->suid_ban_expires = get_seconds() + GR_USER_BAN_TIME;
75537+ if (user->suid_ban_expires == ~0UL)
75538+ user->suid_ban_expires--;
75539+
75540+ /* only kill other threads of the same binary, from the same user */
75541+ do_each_thread(tsk2, tsk) {
75542+ cred2 = __task_cred(tsk);
75543+ if (tsk != p && uid_eq(cred2->uid, uid) && gr_is_same_file(tsk->exec_file, p->exec_file))
75544+ gr_fake_force_sig(SIGKILL, tsk);
75545+ } while_each_thread(tsk2, tsk);
75546+ }
75547+ }
75548+unlock:
75549+ read_unlock(&grsec_exec_file_lock);
75550+ read_unlock(&tasklist_lock);
75551+ rcu_read_unlock();
75552+
75553+ if (gr_is_global_nonroot(uid))
75554+ gr_log_fs_int2(GR_DONT_AUDIT, GR_BRUTE_SUID_MSG, p->exec_file->f_path.dentry, p->exec_file->f_path.mnt, GR_GLOBAL_UID(uid), GR_USER_BAN_TIME / 60);
75555+ else if (daemon)
75556+ gr_log_noargs(GR_DONT_AUDIT, GR_BRUTE_DAEMON_MSG);
75557+
75558+#endif
75559+ return;
75560+}
75561+
75562+void gr_handle_brute_check(void)
75563+{
75564+#ifdef CONFIG_GRKERNSEC_BRUTE
75565+ struct task_struct *p = current;
75566+
75567+ if (unlikely(p->brute)) {
75568+ if (!grsec_enable_brute)
75569+ p->brute = 0;
75570+ else if (time_before(get_seconds(), p->brute_expires))
75571+ msleep(30 * 1000);
75572+ }
75573+#endif
75574+ return;
75575+}
75576+
75577+void gr_handle_kernel_exploit(void)
75578+{
75579+#ifdef CONFIG_GRKERNSEC_KERN_LOCKOUT
75580+ const struct cred *cred;
75581+ struct task_struct *tsk, *tsk2;
75582+ struct user_struct *user;
75583+ kuid_t uid;
75584+
75585+ if (in_irq() || in_serving_softirq() || in_nmi())
75586+ panic("grsec: halting the system due to suspicious kernel crash caused in interrupt context");
75587+
75588+ uid = current_uid();
75589+
75590+ if (gr_is_global_root(uid))
75591+ panic("grsec: halting the system due to suspicious kernel crash caused by root");
75592+ else {
75593+ /* kill all the processes of this user, hold a reference
75594+ to their creds struct, and prevent them from creating
75595+ another process until system reset
75596+ */
75597+ printk(KERN_ALERT "grsec: banning user with uid %u until system restart for suspicious kernel crash\n",
75598+ GR_GLOBAL_UID(uid));
75599+ /* we intentionally leak this ref */
75600+ user = get_uid(current->cred->user);
75601+ if (user)
75602+ user->kernel_banned = 1;
75603+
75604+ /* kill all processes of this user */
75605+ read_lock(&tasklist_lock);
75606+ do_each_thread(tsk2, tsk) {
75607+ cred = __task_cred(tsk);
75608+ if (uid_eq(cred->uid, uid))
75609+ gr_fake_force_sig(SIGKILL, tsk);
75610+ } while_each_thread(tsk2, tsk);
75611+ read_unlock(&tasklist_lock);
75612+ }
75613+#endif
75614+}
75615+
75616+#ifdef CONFIG_GRKERNSEC_BRUTE
75617+static bool suid_ban_expired(struct user_struct *user)
75618+{
75619+ if (user->suid_ban_expires != ~0UL && time_after_eq(get_seconds(), user->suid_ban_expires)) {
75620+ user->suid_banned = 0;
75621+ user->suid_ban_expires = 0;
75622+ free_uid(user);
75623+ return true;
75624+ }
75625+
75626+ return false;
75627+}
75628+#endif
75629+
75630+int gr_process_kernel_exec_ban(void)
75631+{
75632+#ifdef CONFIG_GRKERNSEC_KERN_LOCKOUT
75633+ if (unlikely(current->cred->user->kernel_banned))
75634+ return -EPERM;
75635+#endif
75636+ return 0;
75637+}
75638+
75639+int gr_process_kernel_setuid_ban(struct user_struct *user)
75640+{
75641+#ifdef CONFIG_GRKERNSEC_KERN_LOCKOUT
75642+ if (unlikely(user->kernel_banned))
75643+ gr_fake_force_sig(SIGKILL, current);
75644+#endif
75645+ return 0;
75646+}
75647+
75648+int gr_process_suid_exec_ban(const struct linux_binprm *bprm)
75649+{
75650+#ifdef CONFIG_GRKERNSEC_BRUTE
75651+ struct user_struct *user = current->cred->user;
75652+ if (unlikely(user->suid_banned)) {
75653+ if (suid_ban_expired(user))
75654+ return 0;
75655+ /* disallow execution of suid binaries only */
75656+ else if (!uid_eq(bprm->cred->euid, current->cred->uid))
75657+ return -EPERM;
75658+ }
75659+#endif
75660+ return 0;
75661+}
75662diff --git a/grsecurity/grsec_sock.c b/grsecurity/grsec_sock.c
75663new file mode 100644
75664index 0000000..c0aef3a
75665--- /dev/null
75666+++ b/grsecurity/grsec_sock.c
75667@@ -0,0 +1,244 @@
75668+#include <linux/kernel.h>
75669+#include <linux/module.h>
75670+#include <linux/sched.h>
75671+#include <linux/file.h>
75672+#include <linux/net.h>
75673+#include <linux/in.h>
75674+#include <linux/ip.h>
75675+#include <net/sock.h>
75676+#include <net/inet_sock.h>
75677+#include <linux/grsecurity.h>
75678+#include <linux/grinternal.h>
75679+#include <linux/gracl.h>
75680+
75681+extern int gr_search_udp_recvmsg(const struct sock *sk, const struct sk_buff *skb);
75682+extern int gr_search_udp_sendmsg(const struct sock *sk, const struct sockaddr_in *addr);
75683+
75684+EXPORT_SYMBOL_GPL(gr_search_udp_recvmsg);
75685+EXPORT_SYMBOL_GPL(gr_search_udp_sendmsg);
75686+
75687+#ifdef CONFIG_UNIX_MODULE
75688+EXPORT_SYMBOL_GPL(gr_acl_handle_unix);
75689+EXPORT_SYMBOL_GPL(gr_acl_handle_mknod);
75690+EXPORT_SYMBOL_GPL(gr_handle_chroot_unix);
75691+EXPORT_SYMBOL_GPL(gr_handle_create);
75692+#endif
75693+
75694+#ifdef CONFIG_GRKERNSEC
75695+#define gr_conn_table_size 32749
75696+struct conn_table_entry {
75697+ struct conn_table_entry *next;
75698+ struct signal_struct *sig;
75699+};
75700+
75701+struct conn_table_entry *gr_conn_table[gr_conn_table_size];
75702+DEFINE_SPINLOCK(gr_conn_table_lock);
75703+
75704+extern const char * gr_socktype_to_name(unsigned char type);
75705+extern const char * gr_proto_to_name(unsigned char proto);
75706+extern const char * gr_sockfamily_to_name(unsigned char family);
75707+
75708+static __inline__ int
75709+conn_hash(__u32 saddr, __u32 daddr, __u16 sport, __u16 dport, unsigned int size)
75710+{
75711+ return ((daddr + saddr + (sport << 8) + (dport << 16)) % size);
75712+}
75713+
75714+static __inline__ int
75715+conn_match(const struct signal_struct *sig, __u32 saddr, __u32 daddr,
75716+ __u16 sport, __u16 dport)
75717+{
75718+ if (unlikely(sig->gr_saddr == saddr && sig->gr_daddr == daddr &&
75719+ sig->gr_sport == sport && sig->gr_dport == dport))
75720+ return 1;
75721+ else
75722+ return 0;
75723+}
75724+
75725+static void gr_add_to_task_ip_table_nolock(struct signal_struct *sig, struct conn_table_entry *newent)
75726+{
75727+ struct conn_table_entry **match;
75728+ unsigned int index;
75729+
75730+ index = conn_hash(sig->gr_saddr, sig->gr_daddr,
75731+ sig->gr_sport, sig->gr_dport,
75732+ gr_conn_table_size);
75733+
75734+ newent->sig = sig;
75735+
75736+ match = &gr_conn_table[index];
75737+ newent->next = *match;
75738+ *match = newent;
75739+
75740+ return;
75741+}
75742+
75743+static void gr_del_task_from_ip_table_nolock(struct signal_struct *sig)
75744+{
75745+ struct conn_table_entry *match, *last = NULL;
75746+ unsigned int index;
75747+
75748+ index = conn_hash(sig->gr_saddr, sig->gr_daddr,
75749+ sig->gr_sport, sig->gr_dport,
75750+ gr_conn_table_size);
75751+
75752+ match = gr_conn_table[index];
75753+ while (match && !conn_match(match->sig,
75754+ sig->gr_saddr, sig->gr_daddr, sig->gr_sport,
75755+ sig->gr_dport)) {
75756+ last = match;
75757+ match = match->next;
75758+ }
75759+
75760+ if (match) {
75761+ if (last)
75762+ last->next = match->next;
75763+ else
75764+ gr_conn_table[index] = NULL;
75765+ kfree(match);
75766+ }
75767+
75768+ return;
75769+}
75770+
75771+static struct signal_struct * gr_lookup_task_ip_table(__u32 saddr, __u32 daddr,
75772+ __u16 sport, __u16 dport)
75773+{
75774+ struct conn_table_entry *match;
75775+ unsigned int index;
75776+
75777+ index = conn_hash(saddr, daddr, sport, dport, gr_conn_table_size);
75778+
75779+ match = gr_conn_table[index];
75780+ while (match && !conn_match(match->sig, saddr, daddr, sport, dport))
75781+ match = match->next;
75782+
75783+ if (match)
75784+ return match->sig;
75785+ else
75786+ return NULL;
75787+}
75788+
75789+#endif
75790+
75791+void gr_update_task_in_ip_table(struct task_struct *task, const struct inet_sock *inet)
75792+{
75793+#ifdef CONFIG_GRKERNSEC
75794+ struct signal_struct *sig = task->signal;
75795+ struct conn_table_entry *newent;
75796+
75797+ newent = kmalloc(sizeof(struct conn_table_entry), GFP_ATOMIC);
75798+ if (newent == NULL)
75799+ return;
75800+ /* no bh lock needed since we are called with bh disabled */
75801+ spin_lock(&gr_conn_table_lock);
75802+ gr_del_task_from_ip_table_nolock(sig);
75803+ sig->gr_saddr = inet->inet_rcv_saddr;
75804+ sig->gr_daddr = inet->inet_daddr;
75805+ sig->gr_sport = inet->inet_sport;
75806+ sig->gr_dport = inet->inet_dport;
75807+ gr_add_to_task_ip_table_nolock(sig, newent);
75808+ spin_unlock(&gr_conn_table_lock);
75809+#endif
75810+ return;
75811+}
75812+
75813+void gr_del_task_from_ip_table(struct task_struct *task)
75814+{
75815+#ifdef CONFIG_GRKERNSEC
75816+ spin_lock_bh(&gr_conn_table_lock);
75817+ gr_del_task_from_ip_table_nolock(task->signal);
75818+ spin_unlock_bh(&gr_conn_table_lock);
75819+#endif
75820+ return;
75821+}
75822+
75823+void
75824+gr_attach_curr_ip(const struct sock *sk)
75825+{
75826+#ifdef CONFIG_GRKERNSEC
75827+ struct signal_struct *p, *set;
75828+ const struct inet_sock *inet = inet_sk(sk);
75829+
75830+ if (unlikely(sk->sk_protocol != IPPROTO_TCP))
75831+ return;
75832+
75833+ set = current->signal;
75834+
75835+ spin_lock_bh(&gr_conn_table_lock);
75836+ p = gr_lookup_task_ip_table(inet->inet_daddr, inet->inet_rcv_saddr,
75837+ inet->inet_dport, inet->inet_sport);
75838+ if (unlikely(p != NULL)) {
75839+ set->curr_ip = p->curr_ip;
75840+ set->used_accept = 1;
75841+ gr_del_task_from_ip_table_nolock(p);
75842+ spin_unlock_bh(&gr_conn_table_lock);
75843+ return;
75844+ }
75845+ spin_unlock_bh(&gr_conn_table_lock);
75846+
75847+ set->curr_ip = inet->inet_daddr;
75848+ set->used_accept = 1;
75849+#endif
75850+ return;
75851+}
75852+
75853+int
75854+gr_handle_sock_all(const int family, const int type, const int protocol)
75855+{
75856+#ifdef CONFIG_GRKERNSEC_SOCKET_ALL
75857+ if (grsec_enable_socket_all && in_group_p(grsec_socket_all_gid) &&
75858+ (family != AF_UNIX)) {
75859+ if (family == AF_INET)
75860+ gr_log_str3(GR_DONT_AUDIT, GR_SOCK_MSG, gr_sockfamily_to_name(family), gr_socktype_to_name(type), gr_proto_to_name(protocol));
75861+ else
75862+ gr_log_str2_int(GR_DONT_AUDIT, GR_SOCK_NOINET_MSG, gr_sockfamily_to_name(family), gr_socktype_to_name(type), protocol);
75863+ return -EACCES;
75864+ }
75865+#endif
75866+ return 0;
75867+}
75868+
75869+int
75870+gr_handle_sock_server(const struct sockaddr *sck)
75871+{
75872+#ifdef CONFIG_GRKERNSEC_SOCKET_SERVER
75873+ if (grsec_enable_socket_server &&
75874+ in_group_p(grsec_socket_server_gid) &&
75875+ sck && (sck->sa_family != AF_UNIX) &&
75876+ (sck->sa_family != AF_LOCAL)) {
75877+ gr_log_noargs(GR_DONT_AUDIT, GR_BIND_MSG);
75878+ return -EACCES;
75879+ }
75880+#endif
75881+ return 0;
75882+}
75883+
75884+int
75885+gr_handle_sock_server_other(const struct sock *sck)
75886+{
75887+#ifdef CONFIG_GRKERNSEC_SOCKET_SERVER
75888+ if (grsec_enable_socket_server &&
75889+ in_group_p(grsec_socket_server_gid) &&
75890+ sck && (sck->sk_family != AF_UNIX) &&
75891+ (sck->sk_family != AF_LOCAL)) {
75892+ gr_log_noargs(GR_DONT_AUDIT, GR_BIND_MSG);
75893+ return -EACCES;
75894+ }
75895+#endif
75896+ return 0;
75897+}
75898+
75899+int
75900+gr_handle_sock_client(const struct sockaddr *sck)
75901+{
75902+#ifdef CONFIG_GRKERNSEC_SOCKET_CLIENT
75903+ if (grsec_enable_socket_client && in_group_p(grsec_socket_client_gid) &&
75904+ sck && (sck->sa_family != AF_UNIX) &&
75905+ (sck->sa_family != AF_LOCAL)) {
75906+ gr_log_noargs(GR_DONT_AUDIT, GR_CONNECT_MSG);
75907+ return -EACCES;
75908+ }
75909+#endif
75910+ return 0;
75911+}
75912diff --git a/grsecurity/grsec_sysctl.c b/grsecurity/grsec_sysctl.c
75913new file mode 100644
75914index 0000000..8159888
75915--- /dev/null
75916+++ b/grsecurity/grsec_sysctl.c
75917@@ -0,0 +1,479 @@
75918+#include <linux/kernel.h>
75919+#include <linux/sched.h>
75920+#include <linux/sysctl.h>
75921+#include <linux/grsecurity.h>
75922+#include <linux/grinternal.h>
75923+
75924+int
75925+gr_handle_sysctl_mod(const char *dirname, const char *name, const int op)
75926+{
75927+#ifdef CONFIG_GRKERNSEC_SYSCTL
75928+ if (dirname == NULL || name == NULL)
75929+ return 0;
75930+ if (!strcmp(dirname, "grsecurity") && grsec_lock && (op & MAY_WRITE)) {
75931+ gr_log_str(GR_DONT_AUDIT, GR_SYSCTL_MSG, name);
75932+ return -EACCES;
75933+ }
75934+#endif
75935+ return 0;
75936+}
75937+
75938+#if defined(CONFIG_GRKERNSEC_ROFS) || defined(CONFIG_GRKERNSEC_DENYUSB)
75939+static int __maybe_unused __read_only one = 1;
75940+#endif
75941+
75942+#if defined(CONFIG_GRKERNSEC_SYSCTL) || defined(CONFIG_GRKERNSEC_ROFS) || \
75943+ defined(CONFIG_GRKERNSEC_DENYUSB)
75944+struct ctl_table grsecurity_table[] = {
75945+#ifdef CONFIG_GRKERNSEC_SYSCTL
75946+#ifdef CONFIG_GRKERNSEC_SYSCTL_DISTRO
75947+#ifdef CONFIG_GRKERNSEC_IO
75948+ {
75949+ .procname = "disable_priv_io",
75950+ .data = &grsec_disable_privio,
75951+ .maxlen = sizeof(int),
75952+ .mode = 0600,
75953+ .proc_handler = &proc_dointvec,
75954+ },
75955+#endif
75956+#endif
75957+#ifdef CONFIG_GRKERNSEC_LINK
75958+ {
75959+ .procname = "linking_restrictions",
75960+ .data = &grsec_enable_link,
75961+ .maxlen = sizeof(int),
75962+ .mode = 0600,
75963+ .proc_handler = &proc_dointvec,
75964+ },
75965+#endif
75966+#ifdef CONFIG_GRKERNSEC_SYMLINKOWN
75967+ {
75968+ .procname = "enforce_symlinksifowner",
75969+ .data = &grsec_enable_symlinkown,
75970+ .maxlen = sizeof(int),
75971+ .mode = 0600,
75972+ .proc_handler = &proc_dointvec,
75973+ },
75974+ {
75975+ .procname = "symlinkown_gid",
75976+ .data = &grsec_symlinkown_gid,
75977+ .maxlen = sizeof(int),
75978+ .mode = 0600,
75979+ .proc_handler = &proc_dointvec,
75980+ },
75981+#endif
75982+#ifdef CONFIG_GRKERNSEC_BRUTE
75983+ {
75984+ .procname = "deter_bruteforce",
75985+ .data = &grsec_enable_brute,
75986+ .maxlen = sizeof(int),
75987+ .mode = 0600,
75988+ .proc_handler = &proc_dointvec,
75989+ },
75990+#endif
75991+#ifdef CONFIG_GRKERNSEC_FIFO
75992+ {
75993+ .procname = "fifo_restrictions",
75994+ .data = &grsec_enable_fifo,
75995+ .maxlen = sizeof(int),
75996+ .mode = 0600,
75997+ .proc_handler = &proc_dointvec,
75998+ },
75999+#endif
76000+#ifdef CONFIG_GRKERNSEC_PTRACE_READEXEC
76001+ {
76002+ .procname = "ptrace_readexec",
76003+ .data = &grsec_enable_ptrace_readexec,
76004+ .maxlen = sizeof(int),
76005+ .mode = 0600,
76006+ .proc_handler = &proc_dointvec,
76007+ },
76008+#endif
76009+#ifdef CONFIG_GRKERNSEC_SETXID
76010+ {
76011+ .procname = "consistent_setxid",
76012+ .data = &grsec_enable_setxid,
76013+ .maxlen = sizeof(int),
76014+ .mode = 0600,
76015+ .proc_handler = &proc_dointvec,
76016+ },
76017+#endif
76018+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
76019+ {
76020+ .procname = "ip_blackhole",
76021+ .data = &grsec_enable_blackhole,
76022+ .maxlen = sizeof(int),
76023+ .mode = 0600,
76024+ .proc_handler = &proc_dointvec,
76025+ },
76026+ {
76027+ .procname = "lastack_retries",
76028+ .data = &grsec_lastack_retries,
76029+ .maxlen = sizeof(int),
76030+ .mode = 0600,
76031+ .proc_handler = &proc_dointvec,
76032+ },
76033+#endif
76034+#ifdef CONFIG_GRKERNSEC_EXECLOG
76035+ {
76036+ .procname = "exec_logging",
76037+ .data = &grsec_enable_execlog,
76038+ .maxlen = sizeof(int),
76039+ .mode = 0600,
76040+ .proc_handler = &proc_dointvec,
76041+ },
76042+#endif
76043+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
76044+ {
76045+ .procname = "rwxmap_logging",
76046+ .data = &grsec_enable_log_rwxmaps,
76047+ .maxlen = sizeof(int),
76048+ .mode = 0600,
76049+ .proc_handler = &proc_dointvec,
76050+ },
76051+#endif
76052+#ifdef CONFIG_GRKERNSEC_SIGNAL
76053+ {
76054+ .procname = "signal_logging",
76055+ .data = &grsec_enable_signal,
76056+ .maxlen = sizeof(int),
76057+ .mode = 0600,
76058+ .proc_handler = &proc_dointvec,
76059+ },
76060+#endif
76061+#ifdef CONFIG_GRKERNSEC_FORKFAIL
76062+ {
76063+ .procname = "forkfail_logging",
76064+ .data = &grsec_enable_forkfail,
76065+ .maxlen = sizeof(int),
76066+ .mode = 0600,
76067+ .proc_handler = &proc_dointvec,
76068+ },
76069+#endif
76070+#ifdef CONFIG_GRKERNSEC_TIME
76071+ {
76072+ .procname = "timechange_logging",
76073+ .data = &grsec_enable_time,
76074+ .maxlen = sizeof(int),
76075+ .mode = 0600,
76076+ .proc_handler = &proc_dointvec,
76077+ },
76078+#endif
76079+#ifdef CONFIG_GRKERNSEC_CHROOT_SHMAT
76080+ {
76081+ .procname = "chroot_deny_shmat",
76082+ .data = &grsec_enable_chroot_shmat,
76083+ .maxlen = sizeof(int),
76084+ .mode = 0600,
76085+ .proc_handler = &proc_dointvec,
76086+ },
76087+#endif
76088+#ifdef CONFIG_GRKERNSEC_CHROOT_UNIX
76089+ {
76090+ .procname = "chroot_deny_unix",
76091+ .data = &grsec_enable_chroot_unix,
76092+ .maxlen = sizeof(int),
76093+ .mode = 0600,
76094+ .proc_handler = &proc_dointvec,
76095+ },
76096+#endif
76097+#ifdef CONFIG_GRKERNSEC_CHROOT_MOUNT
76098+ {
76099+ .procname = "chroot_deny_mount",
76100+ .data = &grsec_enable_chroot_mount,
76101+ .maxlen = sizeof(int),
76102+ .mode = 0600,
76103+ .proc_handler = &proc_dointvec,
76104+ },
76105+#endif
76106+#ifdef CONFIG_GRKERNSEC_CHROOT_FCHDIR
76107+ {
76108+ .procname = "chroot_deny_fchdir",
76109+ .data = &grsec_enable_chroot_fchdir,
76110+ .maxlen = sizeof(int),
76111+ .mode = 0600,
76112+ .proc_handler = &proc_dointvec,
76113+ },
76114+#endif
76115+#ifdef CONFIG_GRKERNSEC_CHROOT_DOUBLE
76116+ {
76117+ .procname = "chroot_deny_chroot",
76118+ .data = &grsec_enable_chroot_double,
76119+ .maxlen = sizeof(int),
76120+ .mode = 0600,
76121+ .proc_handler = &proc_dointvec,
76122+ },
76123+#endif
76124+#ifdef CONFIG_GRKERNSEC_CHROOT_PIVOT
76125+ {
76126+ .procname = "chroot_deny_pivot",
76127+ .data = &grsec_enable_chroot_pivot,
76128+ .maxlen = sizeof(int),
76129+ .mode = 0600,
76130+ .proc_handler = &proc_dointvec,
76131+ },
76132+#endif
76133+#ifdef CONFIG_GRKERNSEC_CHROOT_CHDIR
76134+ {
76135+ .procname = "chroot_enforce_chdir",
76136+ .data = &grsec_enable_chroot_chdir,
76137+ .maxlen = sizeof(int),
76138+ .mode = 0600,
76139+ .proc_handler = &proc_dointvec,
76140+ },
76141+#endif
76142+#ifdef CONFIG_GRKERNSEC_CHROOT_CHMOD
76143+ {
76144+ .procname = "chroot_deny_chmod",
76145+ .data = &grsec_enable_chroot_chmod,
76146+ .maxlen = sizeof(int),
76147+ .mode = 0600,
76148+ .proc_handler = &proc_dointvec,
76149+ },
76150+#endif
76151+#ifdef CONFIG_GRKERNSEC_CHROOT_MKNOD
76152+ {
76153+ .procname = "chroot_deny_mknod",
76154+ .data = &grsec_enable_chroot_mknod,
76155+ .maxlen = sizeof(int),
76156+ .mode = 0600,
76157+ .proc_handler = &proc_dointvec,
76158+ },
76159+#endif
76160+#ifdef CONFIG_GRKERNSEC_CHROOT_NICE
76161+ {
76162+ .procname = "chroot_restrict_nice",
76163+ .data = &grsec_enable_chroot_nice,
76164+ .maxlen = sizeof(int),
76165+ .mode = 0600,
76166+ .proc_handler = &proc_dointvec,
76167+ },
76168+#endif
76169+#ifdef CONFIG_GRKERNSEC_CHROOT_EXECLOG
76170+ {
76171+ .procname = "chroot_execlog",
76172+ .data = &grsec_enable_chroot_execlog,
76173+ .maxlen = sizeof(int),
76174+ .mode = 0600,
76175+ .proc_handler = &proc_dointvec,
76176+ },
76177+#endif
76178+#ifdef CONFIG_GRKERNSEC_CHROOT_CAPS
76179+ {
76180+ .procname = "chroot_caps",
76181+ .data = &grsec_enable_chroot_caps,
76182+ .maxlen = sizeof(int),
76183+ .mode = 0600,
76184+ .proc_handler = &proc_dointvec,
76185+ },
76186+#endif
76187+#ifdef CONFIG_GRKERNSEC_CHROOT_SYSCTL
76188+ {
76189+ .procname = "chroot_deny_sysctl",
76190+ .data = &grsec_enable_chroot_sysctl,
76191+ .maxlen = sizeof(int),
76192+ .mode = 0600,
76193+ .proc_handler = &proc_dointvec,
76194+ },
76195+#endif
76196+#ifdef CONFIG_GRKERNSEC_TPE
76197+ {
76198+ .procname = "tpe",
76199+ .data = &grsec_enable_tpe,
76200+ .maxlen = sizeof(int),
76201+ .mode = 0600,
76202+ .proc_handler = &proc_dointvec,
76203+ },
76204+ {
76205+ .procname = "tpe_gid",
76206+ .data = &grsec_tpe_gid,
76207+ .maxlen = sizeof(int),
76208+ .mode = 0600,
76209+ .proc_handler = &proc_dointvec,
76210+ },
76211+#endif
76212+#ifdef CONFIG_GRKERNSEC_TPE_INVERT
76213+ {
76214+ .procname = "tpe_invert",
76215+ .data = &grsec_enable_tpe_invert,
76216+ .maxlen = sizeof(int),
76217+ .mode = 0600,
76218+ .proc_handler = &proc_dointvec,
76219+ },
76220+#endif
76221+#ifdef CONFIG_GRKERNSEC_TPE_ALL
76222+ {
76223+ .procname = "tpe_restrict_all",
76224+ .data = &grsec_enable_tpe_all,
76225+ .maxlen = sizeof(int),
76226+ .mode = 0600,
76227+ .proc_handler = &proc_dointvec,
76228+ },
76229+#endif
76230+#ifdef CONFIG_GRKERNSEC_SOCKET_ALL
76231+ {
76232+ .procname = "socket_all",
76233+ .data = &grsec_enable_socket_all,
76234+ .maxlen = sizeof(int),
76235+ .mode = 0600,
76236+ .proc_handler = &proc_dointvec,
76237+ },
76238+ {
76239+ .procname = "socket_all_gid",
76240+ .data = &grsec_socket_all_gid,
76241+ .maxlen = sizeof(int),
76242+ .mode = 0600,
76243+ .proc_handler = &proc_dointvec,
76244+ },
76245+#endif
76246+#ifdef CONFIG_GRKERNSEC_SOCKET_CLIENT
76247+ {
76248+ .procname = "socket_client",
76249+ .data = &grsec_enable_socket_client,
76250+ .maxlen = sizeof(int),
76251+ .mode = 0600,
76252+ .proc_handler = &proc_dointvec,
76253+ },
76254+ {
76255+ .procname = "socket_client_gid",
76256+ .data = &grsec_socket_client_gid,
76257+ .maxlen = sizeof(int),
76258+ .mode = 0600,
76259+ .proc_handler = &proc_dointvec,
76260+ },
76261+#endif
76262+#ifdef CONFIG_GRKERNSEC_SOCKET_SERVER
76263+ {
76264+ .procname = "socket_server",
76265+ .data = &grsec_enable_socket_server,
76266+ .maxlen = sizeof(int),
76267+ .mode = 0600,
76268+ .proc_handler = &proc_dointvec,
76269+ },
76270+ {
76271+ .procname = "socket_server_gid",
76272+ .data = &grsec_socket_server_gid,
76273+ .maxlen = sizeof(int),
76274+ .mode = 0600,
76275+ .proc_handler = &proc_dointvec,
76276+ },
76277+#endif
76278+#ifdef CONFIG_GRKERNSEC_AUDIT_GROUP
76279+ {
76280+ .procname = "audit_group",
76281+ .data = &grsec_enable_group,
76282+ .maxlen = sizeof(int),
76283+ .mode = 0600,
76284+ .proc_handler = &proc_dointvec,
76285+ },
76286+ {
76287+ .procname = "audit_gid",
76288+ .data = &grsec_audit_gid,
76289+ .maxlen = sizeof(int),
76290+ .mode = 0600,
76291+ .proc_handler = &proc_dointvec,
76292+ },
76293+#endif
76294+#ifdef CONFIG_GRKERNSEC_AUDIT_CHDIR
76295+ {
76296+ .procname = "audit_chdir",
76297+ .data = &grsec_enable_chdir,
76298+ .maxlen = sizeof(int),
76299+ .mode = 0600,
76300+ .proc_handler = &proc_dointvec,
76301+ },
76302+#endif
76303+#ifdef CONFIG_GRKERNSEC_AUDIT_MOUNT
76304+ {
76305+ .procname = "audit_mount",
76306+ .data = &grsec_enable_mount,
76307+ .maxlen = sizeof(int),
76308+ .mode = 0600,
76309+ .proc_handler = &proc_dointvec,
76310+ },
76311+#endif
76312+#ifdef CONFIG_GRKERNSEC_DMESG
76313+ {
76314+ .procname = "dmesg",
76315+ .data = &grsec_enable_dmesg,
76316+ .maxlen = sizeof(int),
76317+ .mode = 0600,
76318+ .proc_handler = &proc_dointvec,
76319+ },
76320+#endif
76321+#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK
76322+ {
76323+ .procname = "chroot_findtask",
76324+ .data = &grsec_enable_chroot_findtask,
76325+ .maxlen = sizeof(int),
76326+ .mode = 0600,
76327+ .proc_handler = &proc_dointvec,
76328+ },
76329+#endif
76330+#ifdef CONFIG_GRKERNSEC_RESLOG
76331+ {
76332+ .procname = "resource_logging",
76333+ .data = &grsec_resource_logging,
76334+ .maxlen = sizeof(int),
76335+ .mode = 0600,
76336+ .proc_handler = &proc_dointvec,
76337+ },
76338+#endif
76339+#ifdef CONFIG_GRKERNSEC_AUDIT_PTRACE
76340+ {
76341+ .procname = "audit_ptrace",
76342+ .data = &grsec_enable_audit_ptrace,
76343+ .maxlen = sizeof(int),
76344+ .mode = 0600,
76345+ .proc_handler = &proc_dointvec,
76346+ },
76347+#endif
76348+#ifdef CONFIG_GRKERNSEC_HARDEN_PTRACE
76349+ {
76350+ .procname = "harden_ptrace",
76351+ .data = &grsec_enable_harden_ptrace,
76352+ .maxlen = sizeof(int),
76353+ .mode = 0600,
76354+ .proc_handler = &proc_dointvec,
76355+ },
76356+#endif
76357+#ifdef CONFIG_GRKERNSEC_HARDEN_IPC
76358+ {
76359+ .procname = "harden_ipc",
76360+ .data = &grsec_enable_harden_ipc,
76361+ .maxlen = sizeof(int),
76362+ .mode = 0600,
76363+ .proc_handler = &proc_dointvec,
76364+ },
76365+#endif
76366+ {
76367+ .procname = "grsec_lock",
76368+ .data = &grsec_lock,
76369+ .maxlen = sizeof(int),
76370+ .mode = 0600,
76371+ .proc_handler = &proc_dointvec,
76372+ },
76373+#endif
76374+#ifdef CONFIG_GRKERNSEC_ROFS
76375+ {
76376+ .procname = "romount_protect",
76377+ .data = &grsec_enable_rofs,
76378+ .maxlen = sizeof(int),
76379+ .mode = 0600,
76380+ .proc_handler = &proc_dointvec_minmax,
76381+ .extra1 = &one,
76382+ .extra2 = &one,
76383+ },
76384+#endif
76385+#if defined(CONFIG_GRKERNSEC_DENYUSB) && !defined(CONFIG_GRKERNSEC_DENYUSB_FORCE)
76386+ {
76387+ .procname = "deny_new_usb",
76388+ .data = &grsec_deny_new_usb,
76389+ .maxlen = sizeof(int),
76390+ .mode = 0600,
76391+ .proc_handler = &proc_dointvec,
76392+ },
76393+#endif
76394+ { }
76395+};
76396+#endif
76397diff --git a/grsecurity/grsec_time.c b/grsecurity/grsec_time.c
76398new file mode 100644
76399index 0000000..61b514e
76400--- /dev/null
76401+++ b/grsecurity/grsec_time.c
76402@@ -0,0 +1,16 @@
76403+#include <linux/kernel.h>
76404+#include <linux/sched.h>
76405+#include <linux/grinternal.h>
76406+#include <linux/module.h>
76407+
76408+void
76409+gr_log_timechange(void)
76410+{
76411+#ifdef CONFIG_GRKERNSEC_TIME
76412+ if (grsec_enable_time)
76413+ gr_log_noargs(GR_DONT_AUDIT_GOOD, GR_TIME_MSG);
76414+#endif
76415+ return;
76416+}
76417+
76418+EXPORT_SYMBOL_GPL(gr_log_timechange);
76419diff --git a/grsecurity/grsec_tpe.c b/grsecurity/grsec_tpe.c
76420new file mode 100644
76421index 0000000..d1953de
76422--- /dev/null
76423+++ b/grsecurity/grsec_tpe.c
76424@@ -0,0 +1,78 @@
76425+#include <linux/kernel.h>
76426+#include <linux/sched.h>
76427+#include <linux/file.h>
76428+#include <linux/fs.h>
76429+#include <linux/grinternal.h>
76430+
76431+extern int gr_acl_tpe_check(void);
76432+
76433+int
76434+gr_tpe_allow(const struct file *file)
76435+{
76436+#ifdef CONFIG_GRKERNSEC
76437+ struct inode *inode = file->f_path.dentry->d_parent->d_inode;
76438+ struct inode *file_inode = file->f_path.dentry->d_inode;
76439+ const struct cred *cred = current_cred();
76440+ char *msg = NULL;
76441+ char *msg2 = NULL;
76442+
76443+ // never restrict root
76444+ if (gr_is_global_root(cred->uid))
76445+ return 1;
76446+
76447+ if (grsec_enable_tpe) {
76448+#ifdef CONFIG_GRKERNSEC_TPE_INVERT
76449+ if (grsec_enable_tpe_invert && !in_group_p(grsec_tpe_gid))
76450+ msg = "not being in trusted group";
76451+ else if (!grsec_enable_tpe_invert && in_group_p(grsec_tpe_gid))
76452+ msg = "being in untrusted group";
76453+#else
76454+ if (in_group_p(grsec_tpe_gid))
76455+ msg = "being in untrusted group";
76456+#endif
76457+ }
76458+ if (!msg && gr_acl_tpe_check())
76459+ msg = "being in untrusted role";
76460+
76461+ // not in any affected group/role
76462+ if (!msg)
76463+ goto next_check;
76464+
76465+ if (gr_is_global_nonroot(inode->i_uid))
76466+ msg2 = "file in non-root-owned directory";
76467+ else if (inode->i_mode & S_IWOTH)
76468+ msg2 = "file in world-writable directory";
76469+ else if (inode->i_mode & S_IWGRP)
76470+ msg2 = "file in group-writable directory";
76471+ else if (file_inode->i_mode & S_IWOTH)
76472+ msg2 = "file is world-writable";
76473+
76474+ if (msg && msg2) {
76475+ char fullmsg[70] = {0};
76476+ snprintf(fullmsg, sizeof(fullmsg)-1, "%s and %s", msg, msg2);
76477+ gr_log_str_fs(GR_DONT_AUDIT, GR_EXEC_TPE_MSG, fullmsg, file->f_path.dentry, file->f_path.mnt);
76478+ return 0;
76479+ }
76480+ msg = NULL;
76481+next_check:
76482+#ifdef CONFIG_GRKERNSEC_TPE_ALL
76483+ if (!grsec_enable_tpe || !grsec_enable_tpe_all)
76484+ return 1;
76485+
76486+ if (gr_is_global_nonroot(inode->i_uid) && !uid_eq(inode->i_uid, cred->uid))
76487+ msg = "directory not owned by user";
76488+ else if (inode->i_mode & S_IWOTH)
76489+ msg = "file in world-writable directory";
76490+ else if (inode->i_mode & S_IWGRP)
76491+ msg = "file in group-writable directory";
76492+ else if (file_inode->i_mode & S_IWOTH)
76493+ msg = "file is world-writable";
76494+
76495+ if (msg) {
76496+ gr_log_str_fs(GR_DONT_AUDIT, GR_EXEC_TPE_MSG, msg, file->f_path.dentry, file->f_path.mnt);
76497+ return 0;
76498+ }
76499+#endif
76500+#endif
76501+ return 1;
76502+}
76503diff --git a/grsecurity/grsec_usb.c b/grsecurity/grsec_usb.c
76504new file mode 100644
76505index 0000000..ae02d8e
76506--- /dev/null
76507+++ b/grsecurity/grsec_usb.c
76508@@ -0,0 +1,15 @@
76509+#include <linux/kernel.h>
76510+#include <linux/grinternal.h>
76511+#include <linux/module.h>
76512+
76513+int gr_handle_new_usb(void)
76514+{
76515+#ifdef CONFIG_GRKERNSEC_DENYUSB
76516+ if (grsec_deny_new_usb) {
76517+ printk(KERN_ALERT "grsec: denied insert of new USB device\n");
76518+ return 1;
76519+ }
76520+#endif
76521+ return 0;
76522+}
76523+EXPORT_SYMBOL_GPL(gr_handle_new_usb);
76524diff --git a/grsecurity/grsum.c b/grsecurity/grsum.c
76525new file mode 100644
76526index 0000000..9f7b1ac
76527--- /dev/null
76528+++ b/grsecurity/grsum.c
76529@@ -0,0 +1,61 @@
76530+#include <linux/err.h>
76531+#include <linux/kernel.h>
76532+#include <linux/sched.h>
76533+#include <linux/mm.h>
76534+#include <linux/scatterlist.h>
76535+#include <linux/crypto.h>
76536+#include <linux/gracl.h>
76537+
76538+
76539+#if !defined(CONFIG_CRYPTO) || defined(CONFIG_CRYPTO_MODULE) || !defined(CONFIG_CRYPTO_SHA256) || defined(CONFIG_CRYPTO_SHA256_MODULE)
76540+#error "crypto and sha256 must be built into the kernel"
76541+#endif
76542+
76543+int
76544+chkpw(struct gr_arg *entry, unsigned char *salt, unsigned char *sum)
76545+{
76546+ char *p;
76547+ struct crypto_hash *tfm;
76548+ struct hash_desc desc;
76549+ struct scatterlist sg;
76550+ unsigned char temp_sum[GR_SHA_LEN];
76551+ volatile int retval = 0;
76552+ volatile int dummy = 0;
76553+ unsigned int i;
76554+
76555+ sg_init_table(&sg, 1);
76556+
76557+ tfm = crypto_alloc_hash("sha256", 0, CRYPTO_ALG_ASYNC);
76558+ if (IS_ERR(tfm)) {
76559+ /* should never happen, since sha256 should be built in */
76560+ return 1;
76561+ }
76562+
76563+ desc.tfm = tfm;
76564+ desc.flags = 0;
76565+
76566+ crypto_hash_init(&desc);
76567+
76568+ p = salt;
76569+ sg_set_buf(&sg, p, GR_SALT_LEN);
76570+ crypto_hash_update(&desc, &sg, sg.length);
76571+
76572+ p = entry->pw;
76573+ sg_set_buf(&sg, p, strlen(p));
76574+
76575+ crypto_hash_update(&desc, &sg, sg.length);
76576+
76577+ crypto_hash_final(&desc, temp_sum);
76578+
76579+ memset(entry->pw, 0, GR_PW_LEN);
76580+
76581+ for (i = 0; i < GR_SHA_LEN; i++)
76582+ if (sum[i] != temp_sum[i])
76583+ retval = 1;
76584+ else
76585+ dummy = 1; // waste a cycle
76586+
76587+ crypto_free_hash(tfm);
76588+
76589+ return retval;
76590+}
76591diff --git a/include/asm-generic/4level-fixup.h b/include/asm-generic/4level-fixup.h
76592index 77ff547..181834f 100644
76593--- a/include/asm-generic/4level-fixup.h
76594+++ b/include/asm-generic/4level-fixup.h
76595@@ -13,8 +13,10 @@
76596 #define pmd_alloc(mm, pud, address) \
76597 ((unlikely(pgd_none(*(pud))) && __pmd_alloc(mm, pud, address))? \
76598 NULL: pmd_offset(pud, address))
76599+#define pmd_alloc_kernel(mm, pud, address) pmd_alloc((mm), (pud), (address))
76600
76601 #define pud_alloc(mm, pgd, address) (pgd)
76602+#define pud_alloc_kernel(mm, pgd, address) pud_alloc((mm), (pgd), (address))
76603 #define pud_offset(pgd, start) (pgd)
76604 #define pud_none(pud) 0
76605 #define pud_bad(pud) 0
76606diff --git a/include/asm-generic/atomic-long.h b/include/asm-generic/atomic-long.h
76607index b7babf0..97f4c4f 100644
76608--- a/include/asm-generic/atomic-long.h
76609+++ b/include/asm-generic/atomic-long.h
76610@@ -22,6 +22,12 @@
76611
76612 typedef atomic64_t atomic_long_t;
76613
76614+#ifdef CONFIG_PAX_REFCOUNT
76615+typedef atomic64_unchecked_t atomic_long_unchecked_t;
76616+#else
76617+typedef atomic64_t atomic_long_unchecked_t;
76618+#endif
76619+
76620 #define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i)
76621
76622 static inline long atomic_long_read(atomic_long_t *l)
76623@@ -31,6 +37,15 @@ static inline long atomic_long_read(atomic_long_t *l)
76624 return (long)atomic64_read(v);
76625 }
76626
76627+#ifdef CONFIG_PAX_REFCOUNT
76628+static inline long atomic_long_read_unchecked(atomic_long_unchecked_t *l)
76629+{
76630+ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
76631+
76632+ return (long)atomic64_read_unchecked(v);
76633+}
76634+#endif
76635+
76636 static inline void atomic_long_set(atomic_long_t *l, long i)
76637 {
76638 atomic64_t *v = (atomic64_t *)l;
76639@@ -38,6 +53,15 @@ static inline void atomic_long_set(atomic_long_t *l, long i)
76640 atomic64_set(v, i);
76641 }
76642
76643+#ifdef CONFIG_PAX_REFCOUNT
76644+static inline void atomic_long_set_unchecked(atomic_long_unchecked_t *l, long i)
76645+{
76646+ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
76647+
76648+ atomic64_set_unchecked(v, i);
76649+}
76650+#endif
76651+
76652 static inline void atomic_long_inc(atomic_long_t *l)
76653 {
76654 atomic64_t *v = (atomic64_t *)l;
76655@@ -45,6 +69,15 @@ static inline void atomic_long_inc(atomic_long_t *l)
76656 atomic64_inc(v);
76657 }
76658
76659+#ifdef CONFIG_PAX_REFCOUNT
76660+static inline void atomic_long_inc_unchecked(atomic_long_unchecked_t *l)
76661+{
76662+ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
76663+
76664+ atomic64_inc_unchecked(v);
76665+}
76666+#endif
76667+
76668 static inline void atomic_long_dec(atomic_long_t *l)
76669 {
76670 atomic64_t *v = (atomic64_t *)l;
76671@@ -52,6 +85,15 @@ static inline void atomic_long_dec(atomic_long_t *l)
76672 atomic64_dec(v);
76673 }
76674
76675+#ifdef CONFIG_PAX_REFCOUNT
76676+static inline void atomic_long_dec_unchecked(atomic_long_unchecked_t *l)
76677+{
76678+ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
76679+
76680+ atomic64_dec_unchecked(v);
76681+}
76682+#endif
76683+
76684 static inline void atomic_long_add(long i, atomic_long_t *l)
76685 {
76686 atomic64_t *v = (atomic64_t *)l;
76687@@ -59,6 +101,15 @@ static inline void atomic_long_add(long i, atomic_long_t *l)
76688 atomic64_add(i, v);
76689 }
76690
76691+#ifdef CONFIG_PAX_REFCOUNT
76692+static inline void atomic_long_add_unchecked(long i, atomic_long_unchecked_t *l)
76693+{
76694+ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
76695+
76696+ atomic64_add_unchecked(i, v);
76697+}
76698+#endif
76699+
76700 static inline void atomic_long_sub(long i, atomic_long_t *l)
76701 {
76702 atomic64_t *v = (atomic64_t *)l;
76703@@ -66,6 +117,15 @@ static inline void atomic_long_sub(long i, atomic_long_t *l)
76704 atomic64_sub(i, v);
76705 }
76706
76707+#ifdef CONFIG_PAX_REFCOUNT
76708+static inline void atomic_long_sub_unchecked(long i, atomic_long_unchecked_t *l)
76709+{
76710+ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
76711+
76712+ atomic64_sub_unchecked(i, v);
76713+}
76714+#endif
76715+
76716 static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
76717 {
76718 atomic64_t *v = (atomic64_t *)l;
76719@@ -94,13 +154,22 @@ static inline int atomic_long_add_negative(long i, atomic_long_t *l)
76720 return atomic64_add_negative(i, v);
76721 }
76722
76723-static inline long atomic_long_add_return(long i, atomic_long_t *l)
76724+static inline long __intentional_overflow(-1) atomic_long_add_return(long i, atomic_long_t *l)
76725 {
76726 atomic64_t *v = (atomic64_t *)l;
76727
76728 return (long)atomic64_add_return(i, v);
76729 }
76730
76731+#ifdef CONFIG_PAX_REFCOUNT
76732+static inline long atomic_long_add_return_unchecked(long i, atomic_long_unchecked_t *l)
76733+{
76734+ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
76735+
76736+ return (long)atomic64_add_return_unchecked(i, v);
76737+}
76738+#endif
76739+
76740 static inline long atomic_long_sub_return(long i, atomic_long_t *l)
76741 {
76742 atomic64_t *v = (atomic64_t *)l;
76743@@ -115,6 +184,15 @@ static inline long atomic_long_inc_return(atomic_long_t *l)
76744 return (long)atomic64_inc_return(v);
76745 }
76746
76747+#ifdef CONFIG_PAX_REFCOUNT
76748+static inline long atomic_long_inc_return_unchecked(atomic_long_unchecked_t *l)
76749+{
76750+ atomic64_unchecked_t *v = (atomic64_unchecked_t *)l;
76751+
76752+ return (long)atomic64_inc_return_unchecked(v);
76753+}
76754+#endif
76755+
76756 static inline long atomic_long_dec_return(atomic_long_t *l)
76757 {
76758 atomic64_t *v = (atomic64_t *)l;
76759@@ -140,6 +218,12 @@ static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
76760
76761 typedef atomic_t atomic_long_t;
76762
76763+#ifdef CONFIG_PAX_REFCOUNT
76764+typedef atomic_unchecked_t atomic_long_unchecked_t;
76765+#else
76766+typedef atomic_t atomic_long_unchecked_t;
76767+#endif
76768+
76769 #define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i)
76770 static inline long atomic_long_read(atomic_long_t *l)
76771 {
76772@@ -148,6 +232,15 @@ static inline long atomic_long_read(atomic_long_t *l)
76773 return (long)atomic_read(v);
76774 }
76775
76776+#ifdef CONFIG_PAX_REFCOUNT
76777+static inline long atomic_long_read_unchecked(atomic_long_unchecked_t *l)
76778+{
76779+ atomic_unchecked_t *v = (atomic_unchecked_t *)l;
76780+
76781+ return (long)atomic_read_unchecked(v);
76782+}
76783+#endif
76784+
76785 static inline void atomic_long_set(atomic_long_t *l, long i)
76786 {
76787 atomic_t *v = (atomic_t *)l;
76788@@ -155,6 +248,15 @@ static inline void atomic_long_set(atomic_long_t *l, long i)
76789 atomic_set(v, i);
76790 }
76791
76792+#ifdef CONFIG_PAX_REFCOUNT
76793+static inline void atomic_long_set_unchecked(atomic_long_unchecked_t *l, long i)
76794+{
76795+ atomic_unchecked_t *v = (atomic_unchecked_t *)l;
76796+
76797+ atomic_set_unchecked(v, i);
76798+}
76799+#endif
76800+
76801 static inline void atomic_long_inc(atomic_long_t *l)
76802 {
76803 atomic_t *v = (atomic_t *)l;
76804@@ -162,6 +264,15 @@ static inline void atomic_long_inc(atomic_long_t *l)
76805 atomic_inc(v);
76806 }
76807
76808+#ifdef CONFIG_PAX_REFCOUNT
76809+static inline void atomic_long_inc_unchecked(atomic_long_unchecked_t *l)
76810+{
76811+ atomic_unchecked_t *v = (atomic_unchecked_t *)l;
76812+
76813+ atomic_inc_unchecked(v);
76814+}
76815+#endif
76816+
76817 static inline void atomic_long_dec(atomic_long_t *l)
76818 {
76819 atomic_t *v = (atomic_t *)l;
76820@@ -169,6 +280,15 @@ static inline void atomic_long_dec(atomic_long_t *l)
76821 atomic_dec(v);
76822 }
76823
76824+#ifdef CONFIG_PAX_REFCOUNT
76825+static inline void atomic_long_dec_unchecked(atomic_long_unchecked_t *l)
76826+{
76827+ atomic_unchecked_t *v = (atomic_unchecked_t *)l;
76828+
76829+ atomic_dec_unchecked(v);
76830+}
76831+#endif
76832+
76833 static inline void atomic_long_add(long i, atomic_long_t *l)
76834 {
76835 atomic_t *v = (atomic_t *)l;
76836@@ -176,6 +296,15 @@ static inline void atomic_long_add(long i, atomic_long_t *l)
76837 atomic_add(i, v);
76838 }
76839
76840+#ifdef CONFIG_PAX_REFCOUNT
76841+static inline void atomic_long_add_unchecked(long i, atomic_long_unchecked_t *l)
76842+{
76843+ atomic_unchecked_t *v = (atomic_unchecked_t *)l;
76844+
76845+ atomic_add_unchecked(i, v);
76846+}
76847+#endif
76848+
76849 static inline void atomic_long_sub(long i, atomic_long_t *l)
76850 {
76851 atomic_t *v = (atomic_t *)l;
76852@@ -183,6 +312,15 @@ static inline void atomic_long_sub(long i, atomic_long_t *l)
76853 atomic_sub(i, v);
76854 }
76855
76856+#ifdef CONFIG_PAX_REFCOUNT
76857+static inline void atomic_long_sub_unchecked(long i, atomic_long_unchecked_t *l)
76858+{
76859+ atomic_unchecked_t *v = (atomic_unchecked_t *)l;
76860+
76861+ atomic_sub_unchecked(i, v);
76862+}
76863+#endif
76864+
76865 static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
76866 {
76867 atomic_t *v = (atomic_t *)l;
76868@@ -218,6 +356,16 @@ static inline long atomic_long_add_return(long i, atomic_long_t *l)
76869 return (long)atomic_add_return(i, v);
76870 }
76871
76872+#ifdef CONFIG_PAX_REFCOUNT
76873+static inline long atomic_long_add_return_unchecked(long i, atomic_long_unchecked_t *l)
76874+{
76875+ atomic_unchecked_t *v = (atomic_unchecked_t *)l;
76876+
76877+ return (long)atomic_add_return_unchecked(i, v);
76878+}
76879+
76880+#endif
76881+
76882 static inline long atomic_long_sub_return(long i, atomic_long_t *l)
76883 {
76884 atomic_t *v = (atomic_t *)l;
76885@@ -232,6 +380,15 @@ static inline long atomic_long_inc_return(atomic_long_t *l)
76886 return (long)atomic_inc_return(v);
76887 }
76888
76889+#ifdef CONFIG_PAX_REFCOUNT
76890+static inline long atomic_long_inc_return_unchecked(atomic_long_unchecked_t *l)
76891+{
76892+ atomic_unchecked_t *v = (atomic_unchecked_t *)l;
76893+
76894+ return (long)atomic_inc_return_unchecked(v);
76895+}
76896+#endif
76897+
76898 static inline long atomic_long_dec_return(atomic_long_t *l)
76899 {
76900 atomic_t *v = (atomic_t *)l;
76901@@ -255,4 +412,57 @@ static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
76902
76903 #endif /* BITS_PER_LONG == 64 */
76904
76905+#ifdef CONFIG_PAX_REFCOUNT
76906+static inline void pax_refcount_needs_these_functions(void)
76907+{
76908+ atomic_read_unchecked((atomic_unchecked_t *)NULL);
76909+ atomic_set_unchecked((atomic_unchecked_t *)NULL, 0);
76910+ atomic_add_unchecked(0, (atomic_unchecked_t *)NULL);
76911+ atomic_sub_unchecked(0, (atomic_unchecked_t *)NULL);
76912+ atomic_inc_unchecked((atomic_unchecked_t *)NULL);
76913+ (void)atomic_inc_and_test_unchecked((atomic_unchecked_t *)NULL);
76914+ atomic_inc_return_unchecked((atomic_unchecked_t *)NULL);
76915+ atomic_add_return_unchecked(0, (atomic_unchecked_t *)NULL);
76916+ atomic_dec_unchecked((atomic_unchecked_t *)NULL);
76917+ atomic_cmpxchg_unchecked((atomic_unchecked_t *)NULL, 0, 0);
76918+ (void)atomic_xchg_unchecked((atomic_unchecked_t *)NULL, 0);
76919+#ifdef CONFIG_X86
76920+ atomic_clear_mask_unchecked(0, NULL);
76921+ atomic_set_mask_unchecked(0, NULL);
76922+#endif
76923+
76924+ atomic_long_read_unchecked((atomic_long_unchecked_t *)NULL);
76925+ atomic_long_set_unchecked((atomic_long_unchecked_t *)NULL, 0);
76926+ atomic_long_add_unchecked(0, (atomic_long_unchecked_t *)NULL);
76927+ atomic_long_sub_unchecked(0, (atomic_long_unchecked_t *)NULL);
76928+ atomic_long_inc_unchecked((atomic_long_unchecked_t *)NULL);
76929+ atomic_long_add_return_unchecked(0, (atomic_long_unchecked_t *)NULL);
76930+ atomic_long_inc_return_unchecked((atomic_long_unchecked_t *)NULL);
76931+ atomic_long_dec_unchecked((atomic_long_unchecked_t *)NULL);
76932+}
76933+#else
76934+#define atomic_read_unchecked(v) atomic_read(v)
76935+#define atomic_set_unchecked(v, i) atomic_set((v), (i))
76936+#define atomic_add_unchecked(i, v) atomic_add((i), (v))
76937+#define atomic_sub_unchecked(i, v) atomic_sub((i), (v))
76938+#define atomic_inc_unchecked(v) atomic_inc(v)
76939+#define atomic_inc_and_test_unchecked(v) atomic_inc_and_test(v)
76940+#define atomic_inc_return_unchecked(v) atomic_inc_return(v)
76941+#define atomic_add_return_unchecked(i, v) atomic_add_return((i), (v))
76942+#define atomic_dec_unchecked(v) atomic_dec(v)
76943+#define atomic_cmpxchg_unchecked(v, o, n) atomic_cmpxchg((v), (o), (n))
76944+#define atomic_xchg_unchecked(v, i) atomic_xchg((v), (i))
76945+#define atomic_clear_mask_unchecked(mask, v) atomic_clear_mask((mask), (v))
76946+#define atomic_set_mask_unchecked(mask, v) atomic_set_mask((mask), (v))
76947+
76948+#define atomic_long_read_unchecked(v) atomic_long_read(v)
76949+#define atomic_long_set_unchecked(v, i) atomic_long_set((v), (i))
76950+#define atomic_long_add_unchecked(i, v) atomic_long_add((i), (v))
76951+#define atomic_long_sub_unchecked(i, v) atomic_long_sub((i), (v))
76952+#define atomic_long_inc_unchecked(v) atomic_long_inc(v)
76953+#define atomic_long_add_return_unchecked(i, v) atomic_long_add_return((i), (v))
76954+#define atomic_long_inc_return_unchecked(v) atomic_long_inc_return(v)
76955+#define atomic_long_dec_unchecked(v) atomic_long_dec(v)
76956+#endif
76957+
76958 #endif /* _ASM_GENERIC_ATOMIC_LONG_H */
76959diff --git a/include/asm-generic/atomic.h b/include/asm-generic/atomic.h
76960index 33bd2de..f31bff97 100644
76961--- a/include/asm-generic/atomic.h
76962+++ b/include/asm-generic/atomic.h
76963@@ -153,7 +153,7 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
76964 * Atomically clears the bits set in @mask from @v
76965 */
76966 #ifndef atomic_clear_mask
76967-static inline void atomic_clear_mask(unsigned long mask, atomic_t *v)
76968+static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
76969 {
76970 unsigned long flags;
76971
76972diff --git a/include/asm-generic/atomic64.h b/include/asm-generic/atomic64.h
76973index b18ce4f..2ee2843 100644
76974--- a/include/asm-generic/atomic64.h
76975+++ b/include/asm-generic/atomic64.h
76976@@ -16,6 +16,8 @@ typedef struct {
76977 long long counter;
76978 } atomic64_t;
76979
76980+typedef atomic64_t atomic64_unchecked_t;
76981+
76982 #define ATOMIC64_INIT(i) { (i) }
76983
76984 extern long long atomic64_read(const atomic64_t *v);
76985@@ -39,4 +41,14 @@ extern int atomic64_add_unless(atomic64_t *v, long long a, long long u);
76986 #define atomic64_dec_and_test(v) (atomic64_dec_return((v)) == 0)
76987 #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1LL, 0LL)
76988
76989+#define atomic64_read_unchecked(v) atomic64_read(v)
76990+#define atomic64_set_unchecked(v, i) atomic64_set((v), (i))
76991+#define atomic64_add_unchecked(a, v) atomic64_add((a), (v))
76992+#define atomic64_add_return_unchecked(a, v) atomic64_add_return((a), (v))
76993+#define atomic64_sub_unchecked(a, v) atomic64_sub((a), (v))
76994+#define atomic64_inc_unchecked(v) atomic64_inc(v)
76995+#define atomic64_inc_return_unchecked(v) atomic64_inc_return(v)
76996+#define atomic64_dec_unchecked(v) atomic64_dec(v)
76997+#define atomic64_cmpxchg_unchecked(v, o, n) atomic64_cmpxchg((v), (o), (n))
76998+
76999 #endif /* _ASM_GENERIC_ATOMIC64_H */
77000diff --git a/include/asm-generic/barrier.h b/include/asm-generic/barrier.h
77001index 6f692f8..2ad9dd2 100644
77002--- a/include/asm-generic/barrier.h
77003+++ b/include/asm-generic/barrier.h
77004@@ -66,7 +66,7 @@
77005 do { \
77006 compiletime_assert_atomic_type(*p); \
77007 smp_mb(); \
77008- ACCESS_ONCE(*p) = (v); \
77009+ ACCESS_ONCE_RW(*p) = (v); \
77010 } while (0)
77011
77012 #define smp_load_acquire(p) \
77013diff --git a/include/asm-generic/bitops/__fls.h b/include/asm-generic/bitops/__fls.h
77014index a60a7cc..0fe12f2 100644
77015--- a/include/asm-generic/bitops/__fls.h
77016+++ b/include/asm-generic/bitops/__fls.h
77017@@ -9,7 +9,7 @@
77018 *
77019 * Undefined if no set bit exists, so code should check against 0 first.
77020 */
77021-static __always_inline unsigned long __fls(unsigned long word)
77022+static __always_inline unsigned long __intentional_overflow(-1) __fls(unsigned long word)
77023 {
77024 int num = BITS_PER_LONG - 1;
77025
77026diff --git a/include/asm-generic/bitops/fls.h b/include/asm-generic/bitops/fls.h
77027index 0576d1f..dad6c71 100644
77028--- a/include/asm-generic/bitops/fls.h
77029+++ b/include/asm-generic/bitops/fls.h
77030@@ -9,7 +9,7 @@
77031 * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
77032 */
77033
77034-static __always_inline int fls(int x)
77035+static __always_inline int __intentional_overflow(-1) fls(int x)
77036 {
77037 int r = 32;
77038
77039diff --git a/include/asm-generic/bitops/fls64.h b/include/asm-generic/bitops/fls64.h
77040index b097cf8..3d40e14 100644
77041--- a/include/asm-generic/bitops/fls64.h
77042+++ b/include/asm-generic/bitops/fls64.h
77043@@ -15,7 +15,7 @@
77044 * at position 64.
77045 */
77046 #if BITS_PER_LONG == 32
77047-static __always_inline int fls64(__u64 x)
77048+static __always_inline int __intentional_overflow(-1) fls64(__u64 x)
77049 {
77050 __u32 h = x >> 32;
77051 if (h)
77052@@ -23,7 +23,7 @@ static __always_inline int fls64(__u64 x)
77053 return fls(x);
77054 }
77055 #elif BITS_PER_LONG == 64
77056-static __always_inline int fls64(__u64 x)
77057+static __always_inline int __intentional_overflow(-1) fls64(__u64 x)
77058 {
77059 if (x == 0)
77060 return 0;
77061diff --git a/include/asm-generic/cache.h b/include/asm-generic/cache.h
77062index 1bfcfe5..e04c5c9 100644
77063--- a/include/asm-generic/cache.h
77064+++ b/include/asm-generic/cache.h
77065@@ -6,7 +6,7 @@
77066 * cache lines need to provide their own cache.h.
77067 */
77068
77069-#define L1_CACHE_SHIFT 5
77070-#define L1_CACHE_BYTES (1 << L1_CACHE_SHIFT)
77071+#define L1_CACHE_SHIFT 5UL
77072+#define L1_CACHE_BYTES (1UL << L1_CACHE_SHIFT)
77073
77074 #endif /* __ASM_GENERIC_CACHE_H */
77075diff --git a/include/asm-generic/emergency-restart.h b/include/asm-generic/emergency-restart.h
77076index 0d68a1e..b74a761 100644
77077--- a/include/asm-generic/emergency-restart.h
77078+++ b/include/asm-generic/emergency-restart.h
77079@@ -1,7 +1,7 @@
77080 #ifndef _ASM_GENERIC_EMERGENCY_RESTART_H
77081 #define _ASM_GENERIC_EMERGENCY_RESTART_H
77082
77083-static inline void machine_emergency_restart(void)
77084+static inline __noreturn void machine_emergency_restart(void)
77085 {
77086 machine_restart(NULL);
77087 }
77088diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h
77089index 975e1cc..0b8a083 100644
77090--- a/include/asm-generic/io.h
77091+++ b/include/asm-generic/io.h
77092@@ -289,7 +289,7 @@ static inline void pci_iounmap(struct pci_dev *dev, void __iomem *p)
77093 * These are pretty trivial
77094 */
77095 #ifndef virt_to_phys
77096-static inline unsigned long virt_to_phys(volatile void *address)
77097+static inline unsigned long __intentional_overflow(-1) virt_to_phys(volatile void *address)
77098 {
77099 return __pa((unsigned long)address);
77100 }
77101diff --git a/include/asm-generic/kmap_types.h b/include/asm-generic/kmap_types.h
77102index 90f99c7..00ce236 100644
77103--- a/include/asm-generic/kmap_types.h
77104+++ b/include/asm-generic/kmap_types.h
77105@@ -2,9 +2,9 @@
77106 #define _ASM_GENERIC_KMAP_TYPES_H
77107
77108 #ifdef __WITH_KM_FENCE
77109-# define KM_TYPE_NR 41
77110+# define KM_TYPE_NR 42
77111 #else
77112-# define KM_TYPE_NR 20
77113+# define KM_TYPE_NR 21
77114 #endif
77115
77116 #endif
77117diff --git a/include/asm-generic/local.h b/include/asm-generic/local.h
77118index 9ceb03b..62b0b8f 100644
77119--- a/include/asm-generic/local.h
77120+++ b/include/asm-generic/local.h
77121@@ -23,24 +23,37 @@ typedef struct
77122 atomic_long_t a;
77123 } local_t;
77124
77125+typedef struct {
77126+ atomic_long_unchecked_t a;
77127+} local_unchecked_t;
77128+
77129 #define LOCAL_INIT(i) { ATOMIC_LONG_INIT(i) }
77130
77131 #define local_read(l) atomic_long_read(&(l)->a)
77132+#define local_read_unchecked(l) atomic_long_read_unchecked(&(l)->a)
77133 #define local_set(l,i) atomic_long_set((&(l)->a),(i))
77134+#define local_set_unchecked(l,i) atomic_long_set_unchecked((&(l)->a),(i))
77135 #define local_inc(l) atomic_long_inc(&(l)->a)
77136+#define local_inc_unchecked(l) atomic_long_inc_unchecked(&(l)->a)
77137 #define local_dec(l) atomic_long_dec(&(l)->a)
77138+#define local_dec_unchecked(l) atomic_long_dec_unchecked(&(l)->a)
77139 #define local_add(i,l) atomic_long_add((i),(&(l)->a))
77140+#define local_add_unchecked(i,l) atomic_long_add_unchecked((i),(&(l)->a))
77141 #define local_sub(i,l) atomic_long_sub((i),(&(l)->a))
77142+#define local_sub_unchecked(i,l) atomic_long_sub_unchecked((i),(&(l)->a))
77143
77144 #define local_sub_and_test(i, l) atomic_long_sub_and_test((i), (&(l)->a))
77145 #define local_dec_and_test(l) atomic_long_dec_and_test(&(l)->a)
77146 #define local_inc_and_test(l) atomic_long_inc_and_test(&(l)->a)
77147 #define local_add_negative(i, l) atomic_long_add_negative((i), (&(l)->a))
77148 #define local_add_return(i, l) atomic_long_add_return((i), (&(l)->a))
77149+#define local_add_return_unchecked(i, l) atomic_long_add_return_unchecked((i), (&(l)->a))
77150 #define local_sub_return(i, l) atomic_long_sub_return((i), (&(l)->a))
77151 #define local_inc_return(l) atomic_long_inc_return(&(l)->a)
77152+#define local_dec_return(l) atomic_long_dec_return(&(l)->a)
77153
77154 #define local_cmpxchg(l, o, n) atomic_long_cmpxchg((&(l)->a), (o), (n))
77155+#define local_cmpxchg_unchecked(l, o, n) atomic_long_cmpxchg((&(l)->a), (o), (n))
77156 #define local_xchg(l, n) atomic_long_xchg((&(l)->a), (n))
77157 #define local_add_unless(l, _a, u) atomic_long_add_unless((&(l)->a), (_a), (u))
77158 #define local_inc_not_zero(l) atomic_long_inc_not_zero(&(l)->a)
77159diff --git a/include/asm-generic/pgtable-nopmd.h b/include/asm-generic/pgtable-nopmd.h
77160index 725612b..9cc513a 100644
77161--- a/include/asm-generic/pgtable-nopmd.h
77162+++ b/include/asm-generic/pgtable-nopmd.h
77163@@ -1,14 +1,19 @@
77164 #ifndef _PGTABLE_NOPMD_H
77165 #define _PGTABLE_NOPMD_H
77166
77167-#ifndef __ASSEMBLY__
77168-
77169 #include <asm-generic/pgtable-nopud.h>
77170
77171-struct mm_struct;
77172-
77173 #define __PAGETABLE_PMD_FOLDED
77174
77175+#define PMD_SHIFT PUD_SHIFT
77176+#define PTRS_PER_PMD 1
77177+#define PMD_SIZE (_AC(1,UL) << PMD_SHIFT)
77178+#define PMD_MASK (~(PMD_SIZE-1))
77179+
77180+#ifndef __ASSEMBLY__
77181+
77182+struct mm_struct;
77183+
77184 /*
77185 * Having the pmd type consist of a pud gets the size right, and allows
77186 * us to conceptually access the pud entry that this pmd is folded into
77187@@ -16,11 +21,6 @@ struct mm_struct;
77188 */
77189 typedef struct { pud_t pud; } pmd_t;
77190
77191-#define PMD_SHIFT PUD_SHIFT
77192-#define PTRS_PER_PMD 1
77193-#define PMD_SIZE (1UL << PMD_SHIFT)
77194-#define PMD_MASK (~(PMD_SIZE-1))
77195-
77196 /*
77197 * The "pud_xxx()" functions here are trivial for a folded two-level
77198 * setup: the pmd is never bad, and a pmd always exists (as it's folded
77199diff --git a/include/asm-generic/pgtable-nopud.h b/include/asm-generic/pgtable-nopud.h
77200index 810431d..0ec4804f 100644
77201--- a/include/asm-generic/pgtable-nopud.h
77202+++ b/include/asm-generic/pgtable-nopud.h
77203@@ -1,10 +1,15 @@
77204 #ifndef _PGTABLE_NOPUD_H
77205 #define _PGTABLE_NOPUD_H
77206
77207-#ifndef __ASSEMBLY__
77208-
77209 #define __PAGETABLE_PUD_FOLDED
77210
77211+#define PUD_SHIFT PGDIR_SHIFT
77212+#define PTRS_PER_PUD 1
77213+#define PUD_SIZE (_AC(1,UL) << PUD_SHIFT)
77214+#define PUD_MASK (~(PUD_SIZE-1))
77215+
77216+#ifndef __ASSEMBLY__
77217+
77218 /*
77219 * Having the pud type consist of a pgd gets the size right, and allows
77220 * us to conceptually access the pgd entry that this pud is folded into
77221@@ -12,11 +17,6 @@
77222 */
77223 typedef struct { pgd_t pgd; } pud_t;
77224
77225-#define PUD_SHIFT PGDIR_SHIFT
77226-#define PTRS_PER_PUD 1
77227-#define PUD_SIZE (1UL << PUD_SHIFT)
77228-#define PUD_MASK (~(PUD_SIZE-1))
77229-
77230 /*
77231 * The "pgd_xxx()" functions here are trivial for a folded two-level
77232 * setup: the pud is never bad, and a pud always exists (as it's folded
77233@@ -29,6 +29,7 @@ static inline void pgd_clear(pgd_t *pgd) { }
77234 #define pud_ERROR(pud) (pgd_ERROR((pud).pgd))
77235
77236 #define pgd_populate(mm, pgd, pud) do { } while (0)
77237+#define pgd_populate_kernel(mm, pgd, pud) do { } while (0)
77238 /*
77239 * (puds are folded into pgds so this doesn't get actually called,
77240 * but the define is needed for a generic inline function.)
77241diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
77242index a8015a7..7a4407b 100644
77243--- a/include/asm-generic/pgtable.h
77244+++ b/include/asm-generic/pgtable.h
77245@@ -815,6 +815,22 @@ static inline void pmdp_set_numa(struct mm_struct *mm, unsigned long addr,
77246 }
77247 #endif /* CONFIG_NUMA_BALANCING */
77248
77249+#ifndef __HAVE_ARCH_PAX_OPEN_KERNEL
77250+#ifdef CONFIG_PAX_KERNEXEC
77251+#error KERNEXEC requires pax_open_kernel
77252+#else
77253+static inline unsigned long pax_open_kernel(void) { return 0; }
77254+#endif
77255+#endif
77256+
77257+#ifndef __HAVE_ARCH_PAX_CLOSE_KERNEL
77258+#ifdef CONFIG_PAX_KERNEXEC
77259+#error KERNEXEC requires pax_close_kernel
77260+#else
77261+static inline unsigned long pax_close_kernel(void) { return 0; }
77262+#endif
77263+#endif
77264+
77265 #endif /* CONFIG_MMU */
77266
77267 #endif /* !__ASSEMBLY__ */
77268diff --git a/include/asm-generic/uaccess.h b/include/asm-generic/uaccess.h
77269index 72d8803..cb9749c 100644
77270--- a/include/asm-generic/uaccess.h
77271+++ b/include/asm-generic/uaccess.h
77272@@ -343,4 +343,20 @@ clear_user(void __user *to, unsigned long n)
77273 return __clear_user(to, n);
77274 }
77275
77276+#ifndef __HAVE_ARCH_PAX_OPEN_USERLAND
77277+#ifdef CONFIG_PAX_MEMORY_UDEREF
77278+#error UDEREF requires pax_open_userland
77279+#else
77280+static inline unsigned long pax_open_userland(void) { return 0; }
77281+#endif
77282+#endif
77283+
77284+#ifndef __HAVE_ARCH_PAX_CLOSE_USERLAND
77285+#ifdef CONFIG_PAX_MEMORY_UDEREF
77286+#error UDEREF requires pax_close_userland
77287+#else
77288+static inline unsigned long pax_close_userland(void) { return 0; }
77289+#endif
77290+#endif
77291+
77292 #endif /* __ASM_GENERIC_UACCESS_H */
77293diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
77294index 146e4ff..f4f9609 100644
77295--- a/include/asm-generic/vmlinux.lds.h
77296+++ b/include/asm-generic/vmlinux.lds.h
77297@@ -251,6 +251,7 @@
77298 .rodata : AT(ADDR(.rodata) - LOAD_OFFSET) { \
77299 VMLINUX_SYMBOL(__start_rodata) = .; \
77300 *(.rodata) *(.rodata.*) \
77301+ *(.data..read_only) \
77302 *(__vermagic) /* Kernel version magic */ \
77303 . = ALIGN(8); \
77304 VMLINUX_SYMBOL(__start___tracepoints_ptrs) = .; \
77305@@ -737,17 +738,18 @@
77306 * section in the linker script will go there too. @phdr should have
77307 * a leading colon.
77308 *
77309- * Note that this macros defines __per_cpu_load as an absolute symbol.
77310+ * Note that this macros defines per_cpu_load as an absolute symbol.
77311 * If there is no need to put the percpu section at a predetermined
77312 * address, use PERCPU_SECTION.
77313 */
77314 #define PERCPU_VADDR(cacheline, vaddr, phdr) \
77315- VMLINUX_SYMBOL(__per_cpu_load) = .; \
77316- .data..percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load) \
77317+ per_cpu_load = .; \
77318+ .data..percpu vaddr : AT(VMLINUX_SYMBOL(per_cpu_load) \
77319 - LOAD_OFFSET) { \
77320+ VMLINUX_SYMBOL(__per_cpu_load) = . + per_cpu_load; \
77321 PERCPU_INPUT(cacheline) \
77322 } phdr \
77323- . = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data..percpu);
77324+ . = VMLINUX_SYMBOL(per_cpu_load) + SIZEOF(.data..percpu);
77325
77326 /**
77327 * PERCPU_SECTION - define output section for percpu area, simple version
77328diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h
77329index 016c2f1..c4baa98 100644
77330--- a/include/crypto/algapi.h
77331+++ b/include/crypto/algapi.h
77332@@ -34,7 +34,7 @@ struct crypto_type {
77333 unsigned int maskclear;
77334 unsigned int maskset;
77335 unsigned int tfmsize;
77336-};
77337+} __do_const;
77338
77339 struct crypto_instance {
77340 struct crypto_alg alg;
77341diff --git a/include/drm/drmP.h b/include/drm/drmP.h
77342index a7c2a86..078f1b6 100644
77343--- a/include/drm/drmP.h
77344+++ b/include/drm/drmP.h
77345@@ -68,6 +68,7 @@
77346 #include <linux/workqueue.h>
77347 #include <linux/poll.h>
77348 #include <asm/pgalloc.h>
77349+#include <asm/local.h>
77350 #include <drm/drm.h>
77351 #include <drm/drm_sarea.h>
77352 #include <drm/drm_vma_manager.h>
77353@@ -268,10 +269,12 @@ do { \
77354 * \param cmd command.
77355 * \param arg argument.
77356 */
77357-typedef int drm_ioctl_t(struct drm_device *dev, void *data,
77358+typedef int (* const drm_ioctl_t)(struct drm_device *dev, void *data,
77359+ struct drm_file *file_priv);
77360+typedef int (* drm_ioctl_no_const_t)(struct drm_device *dev, void *data,
77361 struct drm_file *file_priv);
77362
77363-typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
77364+typedef int (* const drm_ioctl_compat_t)(struct file *filp, unsigned int cmd,
77365 unsigned long arg);
77366
77367 #define DRM_IOCTL_NR(n) _IOC_NR(n)
77368@@ -287,10 +290,10 @@ typedef int drm_ioctl_compat_t(struct file *filp, unsigned int cmd,
77369 struct drm_ioctl_desc {
77370 unsigned int cmd;
77371 int flags;
77372- drm_ioctl_t *func;
77373+ drm_ioctl_t func;
77374 unsigned int cmd_drv;
77375 const char *name;
77376-};
77377+} __do_const;
77378
77379 /**
77380 * Creates a driver or general drm_ioctl_desc array entry for the given
77381@@ -1001,7 +1004,8 @@ struct drm_info_list {
77382 int (*show)(struct seq_file*, void*); /** show callback */
77383 u32 driver_features; /**< Required driver features for this entry */
77384 void *data;
77385-};
77386+} __do_const;
77387+typedef struct drm_info_list __no_const drm_info_list_no_const;
77388
77389 /**
77390 * debugfs node structure. This structure represents a debugfs file.
77391@@ -1083,7 +1087,7 @@ struct drm_device {
77392
77393 /** \name Usage Counters */
77394 /*@{ */
77395- int open_count; /**< Outstanding files open */
77396+ local_t open_count; /**< Outstanding files open */
77397 int buf_use; /**< Buffers in use -- cannot alloc */
77398 atomic_t buf_alloc; /**< Buffer allocation in progress */
77399 /*@} */
77400diff --git a/include/drm/drm_crtc_helper.h b/include/drm/drm_crtc_helper.h
77401index 36a5feb..d9f01aa 100644
77402--- a/include/drm/drm_crtc_helper.h
77403+++ b/include/drm/drm_crtc_helper.h
77404@@ -109,7 +109,7 @@ struct drm_encoder_helper_funcs {
77405 struct drm_connector *connector);
77406 /* disable encoder when not in use - more explicit than dpms off */
77407 void (*disable)(struct drm_encoder *encoder);
77408-};
77409+} __no_const;
77410
77411 /**
77412 * drm_connector_helper_funcs - helper operations for connectors
77413diff --git a/include/drm/i915_pciids.h b/include/drm/i915_pciids.h
77414index 012d58f..d0a0642 100644
77415--- a/include/drm/i915_pciids.h
77416+++ b/include/drm/i915_pciids.h
77417@@ -37,7 +37,7 @@
77418 */
77419 #define INTEL_VGA_DEVICE(id, info) { \
77420 0x8086, id, \
77421- ~0, ~0, \
77422+ PCI_ANY_ID, PCI_ANY_ID, \
77423 0x030000, 0xff0000, \
77424 (unsigned long) info }
77425
77426diff --git a/include/drm/ttm/ttm_memory.h b/include/drm/ttm/ttm_memory.h
77427index 72dcbe8..8db58d7 100644
77428--- a/include/drm/ttm/ttm_memory.h
77429+++ b/include/drm/ttm/ttm_memory.h
77430@@ -48,7 +48,7 @@
77431
77432 struct ttm_mem_shrink {
77433 int (*do_shrink) (struct ttm_mem_shrink *);
77434-};
77435+} __no_const;
77436
77437 /**
77438 * struct ttm_mem_global - Global memory accounting structure.
77439diff --git a/include/drm/ttm/ttm_page_alloc.h b/include/drm/ttm/ttm_page_alloc.h
77440index 49a8284..9643967 100644
77441--- a/include/drm/ttm/ttm_page_alloc.h
77442+++ b/include/drm/ttm/ttm_page_alloc.h
77443@@ -80,6 +80,7 @@ void ttm_dma_page_alloc_fini(void);
77444 */
77445 extern int ttm_dma_page_alloc_debugfs(struct seq_file *m, void *data);
77446
77447+struct device;
77448 extern int ttm_dma_populate(struct ttm_dma_tt *ttm_dma, struct device *dev);
77449 extern void ttm_dma_unpopulate(struct ttm_dma_tt *ttm_dma, struct device *dev);
77450
77451diff --git a/include/keys/asymmetric-subtype.h b/include/keys/asymmetric-subtype.h
77452index 4b840e8..155d235 100644
77453--- a/include/keys/asymmetric-subtype.h
77454+++ b/include/keys/asymmetric-subtype.h
77455@@ -37,7 +37,7 @@ struct asymmetric_key_subtype {
77456 /* Verify the signature on a key of this subtype (optional) */
77457 int (*verify_signature)(const struct key *key,
77458 const struct public_key_signature *sig);
77459-};
77460+} __do_const;
77461
77462 /**
77463 * asymmetric_key_subtype - Get the subtype from an asymmetric key
77464diff --git a/include/linux/atmdev.h b/include/linux/atmdev.h
77465index c1da539..1dcec55 100644
77466--- a/include/linux/atmdev.h
77467+++ b/include/linux/atmdev.h
77468@@ -28,7 +28,7 @@ struct compat_atm_iobuf {
77469 #endif
77470
77471 struct k_atm_aal_stats {
77472-#define __HANDLE_ITEM(i) atomic_t i
77473+#define __HANDLE_ITEM(i) atomic_unchecked_t i
77474 __AAL_STAT_ITEMS
77475 #undef __HANDLE_ITEM
77476 };
77477@@ -200,7 +200,7 @@ struct atmdev_ops { /* only send is required */
77478 int (*change_qos)(struct atm_vcc *vcc,struct atm_qos *qos,int flags);
77479 int (*proc_read)(struct atm_dev *dev,loff_t *pos,char *page);
77480 struct module *owner;
77481-};
77482+} __do_const ;
77483
77484 struct atmphy_ops {
77485 int (*start)(struct atm_dev *dev);
77486diff --git a/include/linux/audit.h b/include/linux/audit.h
77487index 22cfddb..ab759e8 100644
77488--- a/include/linux/audit.h
77489+++ b/include/linux/audit.h
77490@@ -210,7 +210,7 @@ static inline void audit_ptrace(struct task_struct *t)
77491 extern unsigned int audit_serial(void);
77492 extern int auditsc_get_stamp(struct audit_context *ctx,
77493 struct timespec *t, unsigned int *serial);
77494-extern int audit_set_loginuid(kuid_t loginuid);
77495+extern int __intentional_overflow(-1) audit_set_loginuid(kuid_t loginuid);
77496
77497 static inline kuid_t audit_get_loginuid(struct task_struct *tsk)
77498 {
77499diff --git a/include/linux/binfmts.h b/include/linux/binfmts.h
77500index 61f29e5..e67c658 100644
77501--- a/include/linux/binfmts.h
77502+++ b/include/linux/binfmts.h
77503@@ -44,7 +44,7 @@ struct linux_binprm {
77504 unsigned interp_flags;
77505 unsigned interp_data;
77506 unsigned long loader, exec;
77507-};
77508+} __randomize_layout;
77509
77510 #define BINPRM_FLAGS_ENFORCE_NONDUMP_BIT 0
77511 #define BINPRM_FLAGS_ENFORCE_NONDUMP (1 << BINPRM_FLAGS_ENFORCE_NONDUMP_BIT)
77512@@ -73,8 +73,10 @@ struct linux_binfmt {
77513 int (*load_binary)(struct linux_binprm *);
77514 int (*load_shlib)(struct file *);
77515 int (*core_dump)(struct coredump_params *cprm);
77516+ void (*handle_mprotect)(struct vm_area_struct *vma, unsigned long newflags);
77517+ void (*handle_mmap)(struct file *);
77518 unsigned long min_coredump; /* minimal dump size */
77519-};
77520+} __do_const __randomize_layout;
77521
77522 extern void __register_binfmt(struct linux_binfmt *fmt, int insert);
77523
77524diff --git a/include/linux/bitops.h b/include/linux/bitops.h
77525index be5fd38..d71192a 100644
77526--- a/include/linux/bitops.h
77527+++ b/include/linux/bitops.h
77528@@ -102,7 +102,7 @@ static inline __u64 ror64(__u64 word, unsigned int shift)
77529 * @word: value to rotate
77530 * @shift: bits to roll
77531 */
77532-static inline __u32 rol32(__u32 word, unsigned int shift)
77533+static inline __u32 __intentional_overflow(-1) rol32(__u32 word, unsigned int shift)
77534 {
77535 return (word << shift) | (word >> (32 - shift));
77536 }
77537@@ -112,7 +112,7 @@ static inline __u32 rol32(__u32 word, unsigned int shift)
77538 * @word: value to rotate
77539 * @shift: bits to roll
77540 */
77541-static inline __u32 ror32(__u32 word, unsigned int shift)
77542+static inline __u32 __intentional_overflow(-1) ror32(__u32 word, unsigned int shift)
77543 {
77544 return (word >> shift) | (word << (32 - shift));
77545 }
77546@@ -168,7 +168,7 @@ static inline __s32 sign_extend32(__u32 value, int index)
77547 return (__s32)(value << shift) >> shift;
77548 }
77549
77550-static inline unsigned fls_long(unsigned long l)
77551+static inline unsigned __intentional_overflow(-1) fls_long(unsigned long l)
77552 {
77553 if (sizeof(l) == 4)
77554 return fls(l);
77555diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
77556index 0d84981..bb741c0 100644
77557--- a/include/linux/blkdev.h
77558+++ b/include/linux/blkdev.h
77559@@ -1584,7 +1584,7 @@ struct block_device_operations {
77560 /* this callback is with swap_lock and sometimes page table lock held */
77561 void (*swap_slot_free_notify) (struct block_device *, unsigned long);
77562 struct module *owner;
77563-};
77564+} __do_const;
77565
77566 extern int __blkdev_driver_ioctl(struct block_device *, fmode_t, unsigned int,
77567 unsigned long);
77568diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
77569index afc1343..9735539 100644
77570--- a/include/linux/blktrace_api.h
77571+++ b/include/linux/blktrace_api.h
77572@@ -25,7 +25,7 @@ struct blk_trace {
77573 struct dentry *dropped_file;
77574 struct dentry *msg_file;
77575 struct list_head running_list;
77576- atomic_t dropped;
77577+ atomic_unchecked_t dropped;
77578 };
77579
77580 extern int blk_trace_ioctl(struct block_device *, unsigned, char __user *);
77581diff --git a/include/linux/cache.h b/include/linux/cache.h
77582index 17e7e82..1d7da26 100644
77583--- a/include/linux/cache.h
77584+++ b/include/linux/cache.h
77585@@ -16,6 +16,14 @@
77586 #define __read_mostly
77587 #endif
77588
77589+#ifndef __read_only
77590+#ifdef CONFIG_PAX_KERNEXEC
77591+#error KERNEXEC requires __read_only
77592+#else
77593+#define __read_only __read_mostly
77594+#endif
77595+#endif
77596+
77597 #ifndef ____cacheline_aligned
77598 #define ____cacheline_aligned __attribute__((__aligned__(SMP_CACHE_BYTES)))
77599 #endif
77600diff --git a/include/linux/capability.h b/include/linux/capability.h
77601index 84b13ad..172cdee 100644
77602--- a/include/linux/capability.h
77603+++ b/include/linux/capability.h
77604@@ -211,9 +211,14 @@ extern bool has_ns_capability_noaudit(struct task_struct *t,
77605 extern bool capable(int cap);
77606 extern bool ns_capable(struct user_namespace *ns, int cap);
77607 extern bool capable_wrt_inode_uidgid(const struct inode *inode, int cap);
77608+extern bool capable_wrt_inode_uidgid_nolog(const struct inode *inode, int cap);
77609 extern bool file_ns_capable(const struct file *file, struct user_namespace *ns, int cap);
77610+extern bool capable_nolog(int cap);
77611+extern bool ns_capable_nolog(struct user_namespace *ns, int cap);
77612
77613 /* audit system wants to get cap info from files as well */
77614 extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps);
77615
77616+extern int is_privileged_binary(const struct dentry *dentry);
77617+
77618 #endif /* !_LINUX_CAPABILITY_H */
77619diff --git a/include/linux/cdrom.h b/include/linux/cdrom.h
77620index 8609d57..86e4d79 100644
77621--- a/include/linux/cdrom.h
77622+++ b/include/linux/cdrom.h
77623@@ -87,7 +87,6 @@ struct cdrom_device_ops {
77624
77625 /* driver specifications */
77626 const int capability; /* capability flags */
77627- int n_minors; /* number of active minor devices */
77628 /* handle uniform packets for scsi type devices (scsi,atapi) */
77629 int (*generic_packet) (struct cdrom_device_info *,
77630 struct packet_command *);
77631diff --git a/include/linux/cleancache.h b/include/linux/cleancache.h
77632index 4ce9056..86caac6 100644
77633--- a/include/linux/cleancache.h
77634+++ b/include/linux/cleancache.h
77635@@ -31,7 +31,7 @@ struct cleancache_ops {
77636 void (*invalidate_page)(int, struct cleancache_filekey, pgoff_t);
77637 void (*invalidate_inode)(int, struct cleancache_filekey);
77638 void (*invalidate_fs)(int);
77639-};
77640+} __no_const;
77641
77642 extern struct cleancache_ops *
77643 cleancache_register_ops(struct cleancache_ops *ops);
77644diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
77645index 5119174..8e264f8 100644
77646--- a/include/linux/clk-provider.h
77647+++ b/include/linux/clk-provider.h
77648@@ -174,6 +174,7 @@ struct clk_ops {
77649 void (*init)(struct clk_hw *hw);
77650 int (*debug_init)(struct clk_hw *hw, struct dentry *dentry);
77651 };
77652+typedef struct clk_ops __no_const clk_ops_no_const;
77653
77654 /**
77655 * struct clk_init_data - holds init data that's common to all clocks and is
77656diff --git a/include/linux/compat.h b/include/linux/compat.h
77657index e649426..a74047b 100644
77658--- a/include/linux/compat.h
77659+++ b/include/linux/compat.h
77660@@ -316,7 +316,7 @@ compat_sys_get_robust_list(int pid, compat_uptr_t __user *head_ptr,
77661 compat_size_t __user *len_ptr);
77662
77663 asmlinkage long compat_sys_ipc(u32, int, int, u32, compat_uptr_t, u32);
77664-asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg);
77665+asmlinkage long compat_sys_shmat(int shmid, compat_uptr_t shmaddr, int shmflg) __intentional_overflow(0);
77666 asmlinkage long compat_sys_semctl(int semid, int semnum, int cmd, int arg);
77667 asmlinkage long compat_sys_msgsnd(int msqid, compat_uptr_t msgp,
77668 compat_ssize_t msgsz, int msgflg);
77669@@ -436,7 +436,7 @@ extern int compat_ptrace_request(struct task_struct *child,
77670 extern long compat_arch_ptrace(struct task_struct *child, compat_long_t request,
77671 compat_ulong_t addr, compat_ulong_t data);
77672 asmlinkage long compat_sys_ptrace(compat_long_t request, compat_long_t pid,
77673- compat_long_t addr, compat_long_t data);
77674+ compat_ulong_t addr, compat_ulong_t data);
77675
77676 asmlinkage long compat_sys_lookup_dcookie(u32, u32, char __user *, compat_size_t);
77677 /*
77678diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
77679index 2507fd2..55203f8 100644
77680--- a/include/linux/compiler-gcc4.h
77681+++ b/include/linux/compiler-gcc4.h
77682@@ -39,9 +39,34 @@
77683 # define __compiletime_warning(message) __attribute__((warning(message)))
77684 # define __compiletime_error(message) __attribute__((error(message)))
77685 #endif /* __CHECKER__ */
77686+
77687+#define __alloc_size(...) __attribute((alloc_size(__VA_ARGS__)))
77688+#define __bos(ptr, arg) __builtin_object_size((ptr), (arg))
77689+#define __bos0(ptr) __bos((ptr), 0)
77690+#define __bos1(ptr) __bos((ptr), 1)
77691 #endif /* GCC_VERSION >= 40300 */
77692
77693 #if GCC_VERSION >= 40500
77694+
77695+#ifdef RANDSTRUCT_PLUGIN
77696+#define __randomize_layout __attribute__((randomize_layout))
77697+#define __no_randomize_layout __attribute__((no_randomize_layout))
77698+#endif
77699+
77700+#ifdef CONSTIFY_PLUGIN
77701+#define __no_const __attribute__((no_const))
77702+#define __do_const __attribute__((do_const))
77703+#endif
77704+
77705+#ifdef SIZE_OVERFLOW_PLUGIN
77706+#define __size_overflow(...) __attribute__((size_overflow(__VA_ARGS__)))
77707+#define __intentional_overflow(...) __attribute__((intentional_overflow(__VA_ARGS__)))
77708+#endif
77709+
77710+#ifdef LATENT_ENTROPY_PLUGIN
77711+#define __latent_entropy __attribute__((latent_entropy))
77712+#endif
77713+
77714 /*
77715 * Mark a position in code as unreachable. This can be used to
77716 * suppress control flow warnings after asm blocks that transfer
77717diff --git a/include/linux/compiler.h b/include/linux/compiler.h
77718index ee7239e..7c11769 100644
77719--- a/include/linux/compiler.h
77720+++ b/include/linux/compiler.h
77721@@ -5,11 +5,14 @@
77722
77723 #ifdef __CHECKER__
77724 # define __user __attribute__((noderef, address_space(1)))
77725+# define __force_user __force __user
77726 # define __kernel __attribute__((address_space(0)))
77727+# define __force_kernel __force __kernel
77728 # define __safe __attribute__((safe))
77729 # define __force __attribute__((force))
77730 # define __nocast __attribute__((nocast))
77731 # define __iomem __attribute__((noderef, address_space(2)))
77732+# define __force_iomem __force __iomem
77733 # define __must_hold(x) __attribute__((context(x,1,1)))
77734 # define __acquires(x) __attribute__((context(x,0,1)))
77735 # define __releases(x) __attribute__((context(x,1,0)))
77736@@ -17,20 +20,37 @@
77737 # define __release(x) __context__(x,-1)
77738 # define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0)
77739 # define __percpu __attribute__((noderef, address_space(3)))
77740+# define __force_percpu __force __percpu
77741 #ifdef CONFIG_SPARSE_RCU_POINTER
77742 # define __rcu __attribute__((noderef, address_space(4)))
77743+# define __force_rcu __force __rcu
77744 #else
77745 # define __rcu
77746+# define __force_rcu
77747 #endif
77748 extern void __chk_user_ptr(const volatile void __user *);
77749 extern void __chk_io_ptr(const volatile void __iomem *);
77750 #else
77751-# define __user
77752-# define __kernel
77753+# ifdef CHECKER_PLUGIN
77754+//# define __user
77755+//# define __force_user
77756+//# define __kernel
77757+//# define __force_kernel
77758+# else
77759+# ifdef STRUCTLEAK_PLUGIN
77760+# define __user __attribute__((user))
77761+# else
77762+# define __user
77763+# endif
77764+# define __force_user
77765+# define __kernel
77766+# define __force_kernel
77767+# endif
77768 # define __safe
77769 # define __force
77770 # define __nocast
77771 # define __iomem
77772+# define __force_iomem
77773 # define __chk_user_ptr(x) (void)0
77774 # define __chk_io_ptr(x) (void)0
77775 # define __builtin_warning(x, y...) (1)
77776@@ -41,7 +61,9 @@ extern void __chk_io_ptr(const volatile void __iomem *);
77777 # define __release(x) (void)0
77778 # define __cond_lock(x,c) (c)
77779 # define __percpu
77780+# define __force_percpu
77781 # define __rcu
77782+# define __force_rcu
77783 #endif
77784
77785 /* Indirect macros required for expanded argument pasting, eg. __LINE__. */
77786@@ -286,6 +308,34 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
77787 # define __attribute_const__ /* unimplemented */
77788 #endif
77789
77790+#ifndef __randomize_layout
77791+# define __randomize_layout
77792+#endif
77793+
77794+#ifndef __no_randomize_layout
77795+# define __no_randomize_layout
77796+#endif
77797+
77798+#ifndef __no_const
77799+# define __no_const
77800+#endif
77801+
77802+#ifndef __do_const
77803+# define __do_const
77804+#endif
77805+
77806+#ifndef __size_overflow
77807+# define __size_overflow(...)
77808+#endif
77809+
77810+#ifndef __intentional_overflow
77811+# define __intentional_overflow(...)
77812+#endif
77813+
77814+#ifndef __latent_entropy
77815+# define __latent_entropy
77816+#endif
77817+
77818 /*
77819 * Tell gcc if a function is cold. The compiler will assume any path
77820 * directly leading to the call is unlikely.
77821@@ -295,6 +345,22 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
77822 #define __cold
77823 #endif
77824
77825+#ifndef __alloc_size
77826+#define __alloc_size(...)
77827+#endif
77828+
77829+#ifndef __bos
77830+#define __bos(ptr, arg)
77831+#endif
77832+
77833+#ifndef __bos0
77834+#define __bos0(ptr)
77835+#endif
77836+
77837+#ifndef __bos1
77838+#define __bos1(ptr)
77839+#endif
77840+
77841 /* Simple shorthand for a section definition */
77842 #ifndef __section
77843 # define __section(S) __attribute__ ((__section__(#S)))
77844@@ -369,7 +435,8 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
77845 * use is to mediate communication between process-level code and irq/NMI
77846 * handlers, all running on the same CPU.
77847 */
77848-#define ACCESS_ONCE(x) (*(volatile typeof(x) *)&(x))
77849+#define ACCESS_ONCE(x) (*(volatile const typeof(x) *)&(x))
77850+#define ACCESS_ONCE_RW(x) (*(volatile typeof(x) *)&(x))
77851
77852 /* Ignore/forbid kprobes attach on very low level functions marked by this attribute: */
77853 #ifdef CONFIG_KPROBES
77854diff --git a/include/linux/completion.h b/include/linux/completion.h
77855index 5d5aaae..0ea9b84 100644
77856--- a/include/linux/completion.h
77857+++ b/include/linux/completion.h
77858@@ -90,16 +90,16 @@ static inline void reinit_completion(struct completion *x)
77859
77860 extern void wait_for_completion(struct completion *);
77861 extern void wait_for_completion_io(struct completion *);
77862-extern int wait_for_completion_interruptible(struct completion *x);
77863-extern int wait_for_completion_killable(struct completion *x);
77864+extern int wait_for_completion_interruptible(struct completion *x) __intentional_overflow(-1);
77865+extern int wait_for_completion_killable(struct completion *x) __intentional_overflow(-1);
77866 extern unsigned long wait_for_completion_timeout(struct completion *x,
77867- unsigned long timeout);
77868+ unsigned long timeout) __intentional_overflow(-1);
77869 extern unsigned long wait_for_completion_io_timeout(struct completion *x,
77870- unsigned long timeout);
77871+ unsigned long timeout) __intentional_overflow(-1);
77872 extern long wait_for_completion_interruptible_timeout(
77873- struct completion *x, unsigned long timeout);
77874+ struct completion *x, unsigned long timeout) __intentional_overflow(-1);
77875 extern long wait_for_completion_killable_timeout(
77876- struct completion *x, unsigned long timeout);
77877+ struct completion *x, unsigned long timeout) __intentional_overflow(-1);
77878 extern bool try_wait_for_completion(struct completion *x);
77879 extern bool completion_done(struct completion *x);
77880
77881diff --git a/include/linux/configfs.h b/include/linux/configfs.h
77882index 34025df..d94bbbc 100644
77883--- a/include/linux/configfs.h
77884+++ b/include/linux/configfs.h
77885@@ -125,7 +125,7 @@ struct configfs_attribute {
77886 const char *ca_name;
77887 struct module *ca_owner;
77888 umode_t ca_mode;
77889-};
77890+} __do_const;
77891
77892 /*
77893 * Users often need to create attribute structures for their configurable
77894diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
77895index 5ae5100..b809662 100644
77896--- a/include/linux/cpufreq.h
77897+++ b/include/linux/cpufreq.h
77898@@ -200,6 +200,7 @@ struct global_attr {
77899 ssize_t (*store)(struct kobject *a, struct attribute *b,
77900 const char *c, size_t count);
77901 };
77902+typedef struct global_attr __no_const global_attr_no_const;
77903
77904 #define define_one_global_ro(_name) \
77905 static struct global_attr _name = \
77906@@ -242,7 +243,7 @@ struct cpufreq_driver {
77907 bool boost_supported;
77908 bool boost_enabled;
77909 int (*set_boost) (int state);
77910-};
77911+} __do_const;
77912
77913 /* flags */
77914 #define CPUFREQ_STICKY (1 << 0) /* driver isn't removed even if
77915diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
77916index b0238cb..db89e1e 100644
77917--- a/include/linux/cpuidle.h
77918+++ b/include/linux/cpuidle.h
77919@@ -50,7 +50,8 @@ struct cpuidle_state {
77920 int index);
77921
77922 int (*enter_dead) (struct cpuidle_device *dev, int index);
77923-};
77924+} __do_const;
77925+typedef struct cpuidle_state __no_const cpuidle_state_no_const;
77926
77927 /* Idle State Flags */
77928 #define CPUIDLE_FLAG_TIME_VALID (0x01) /* is residency time measurable? */
77929@@ -211,7 +212,7 @@ struct cpuidle_governor {
77930 void (*reflect) (struct cpuidle_device *dev, int index);
77931
77932 struct module *owner;
77933-};
77934+} __do_const;
77935
77936 #ifdef CONFIG_CPU_IDLE
77937 extern int cpuidle_register_governor(struct cpuidle_governor *gov);
77938diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
77939index d08e4d2..95fad61 100644
77940--- a/include/linux/cpumask.h
77941+++ b/include/linux/cpumask.h
77942@@ -118,17 +118,17 @@ static inline unsigned int cpumask_first(const struct cpumask *srcp)
77943 }
77944
77945 /* Valid inputs for n are -1 and 0. */
77946-static inline unsigned int cpumask_next(int n, const struct cpumask *srcp)
77947+static inline unsigned int __intentional_overflow(-1) cpumask_next(int n, const struct cpumask *srcp)
77948 {
77949 return n+1;
77950 }
77951
77952-static inline unsigned int cpumask_next_zero(int n, const struct cpumask *srcp)
77953+static inline unsigned int __intentional_overflow(-1) cpumask_next_zero(int n, const struct cpumask *srcp)
77954 {
77955 return n+1;
77956 }
77957
77958-static inline unsigned int cpumask_next_and(int n,
77959+static inline unsigned int __intentional_overflow(-1) cpumask_next_and(int n,
77960 const struct cpumask *srcp,
77961 const struct cpumask *andp)
77962 {
77963@@ -167,7 +167,7 @@ static inline unsigned int cpumask_first(const struct cpumask *srcp)
77964 *
77965 * Returns >= nr_cpu_ids if no further cpus set.
77966 */
77967-static inline unsigned int cpumask_next(int n, const struct cpumask *srcp)
77968+static inline unsigned int __intentional_overflow(-1) cpumask_next(int n, const struct cpumask *srcp)
77969 {
77970 /* -1 is a legal arg here. */
77971 if (n != -1)
77972@@ -182,7 +182,7 @@ static inline unsigned int cpumask_next(int n, const struct cpumask *srcp)
77973 *
77974 * Returns >= nr_cpu_ids if no further cpus unset.
77975 */
77976-static inline unsigned int cpumask_next_zero(int n, const struct cpumask *srcp)
77977+static inline unsigned int __intentional_overflow(-1) cpumask_next_zero(int n, const struct cpumask *srcp)
77978 {
77979 /* -1 is a legal arg here. */
77980 if (n != -1)
77981@@ -190,7 +190,7 @@ static inline unsigned int cpumask_next_zero(int n, const struct cpumask *srcp)
77982 return find_next_zero_bit(cpumask_bits(srcp), nr_cpumask_bits, n+1);
77983 }
77984
77985-int cpumask_next_and(int n, const struct cpumask *, const struct cpumask *);
77986+int cpumask_next_and(int n, const struct cpumask *, const struct cpumask *) __intentional_overflow(-1);
77987 int cpumask_any_but(const struct cpumask *mask, unsigned int cpu);
77988
77989 /**
77990diff --git a/include/linux/cred.h b/include/linux/cred.h
77991index f61d6c8..d372d95 100644
77992--- a/include/linux/cred.h
77993+++ b/include/linux/cred.h
77994@@ -35,7 +35,7 @@ struct group_info {
77995 int nblocks;
77996 kgid_t small_block[NGROUPS_SMALL];
77997 kgid_t *blocks[0];
77998-};
77999+} __randomize_layout;
78000
78001 /**
78002 * get_group_info - Get a reference to a group info structure
78003@@ -136,7 +136,7 @@ struct cred {
78004 struct user_namespace *user_ns; /* user_ns the caps and keyrings are relative to. */
78005 struct group_info *group_info; /* supplementary groups for euid/fsgid */
78006 struct rcu_head rcu; /* RCU deletion hook */
78007-};
78008+} __randomize_layout;
78009
78010 extern void __put_cred(struct cred *);
78011 extern void exit_creds(struct task_struct *);
78012@@ -194,6 +194,9 @@ static inline void validate_creds_for_do_exit(struct task_struct *tsk)
78013 static inline void validate_process_creds(void)
78014 {
78015 }
78016+static inline void validate_task_creds(struct task_struct *task)
78017+{
78018+}
78019 #endif
78020
78021 /**
78022@@ -322,6 +325,7 @@ static inline void put_cred(const struct cred *_cred)
78023
78024 #define task_uid(task) (task_cred_xxx((task), uid))
78025 #define task_euid(task) (task_cred_xxx((task), euid))
78026+#define task_securebits(task) (task_cred_xxx((task), securebits))
78027
78028 #define current_cred_xxx(xxx) \
78029 ({ \
78030diff --git a/include/linux/crypto.h b/include/linux/crypto.h
78031index b92eadf..b4ecdc1 100644
78032--- a/include/linux/crypto.h
78033+++ b/include/linux/crypto.h
78034@@ -373,7 +373,7 @@ struct cipher_tfm {
78035 const u8 *key, unsigned int keylen);
78036 void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
78037 void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
78038-};
78039+} __no_const;
78040
78041 struct hash_tfm {
78042 int (*init)(struct hash_desc *desc);
78043@@ -394,13 +394,13 @@ struct compress_tfm {
78044 int (*cot_decompress)(struct crypto_tfm *tfm,
78045 const u8 *src, unsigned int slen,
78046 u8 *dst, unsigned int *dlen);
78047-};
78048+} __no_const;
78049
78050 struct rng_tfm {
78051 int (*rng_gen_random)(struct crypto_rng *tfm, u8 *rdata,
78052 unsigned int dlen);
78053 int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
78054-};
78055+} __no_const;
78056
78057 #define crt_ablkcipher crt_u.ablkcipher
78058 #define crt_aead crt_u.aead
78059diff --git a/include/linux/ctype.h b/include/linux/ctype.h
78060index 653589e..4ef254a 100644
78061--- a/include/linux/ctype.h
78062+++ b/include/linux/ctype.h
78063@@ -56,7 +56,7 @@ static inline unsigned char __toupper(unsigned char c)
78064 * Fast implementation of tolower() for internal usage. Do not use in your
78065 * code.
78066 */
78067-static inline char _tolower(const char c)
78068+static inline unsigned char _tolower(const unsigned char c)
78069 {
78070 return c | 0x20;
78071 }
78072diff --git a/include/linux/dcache.h b/include/linux/dcache.h
78073index 3c7ec32..4ca97cc 100644
78074--- a/include/linux/dcache.h
78075+++ b/include/linux/dcache.h
78076@@ -133,7 +133,7 @@ struct dentry {
78077 } d_u;
78078 struct list_head d_subdirs; /* our children */
78079 struct hlist_node d_alias; /* inode alias list */
78080-};
78081+} __randomize_layout;
78082
78083 /*
78084 * dentry->d_lock spinlock nesting subclasses:
78085diff --git a/include/linux/decompress/mm.h b/include/linux/decompress/mm.h
78086index 7925bf0..d5143d2 100644
78087--- a/include/linux/decompress/mm.h
78088+++ b/include/linux/decompress/mm.h
78089@@ -77,7 +77,7 @@ static void free(void *where)
78090 * warnings when not needed (indeed large_malloc / large_free are not
78091 * needed by inflate */
78092
78093-#define malloc(a) kmalloc(a, GFP_KERNEL)
78094+#define malloc(a) kmalloc((a), GFP_KERNEL)
78095 #define free(a) kfree(a)
78096
78097 #define large_malloc(a) vmalloc(a)
78098diff --git a/include/linux/devfreq.h b/include/linux/devfreq.h
78099index d48dc00..211ee54 100644
78100--- a/include/linux/devfreq.h
78101+++ b/include/linux/devfreq.h
78102@@ -114,7 +114,7 @@ struct devfreq_governor {
78103 int (*get_target_freq)(struct devfreq *this, unsigned long *freq);
78104 int (*event_handler)(struct devfreq *devfreq,
78105 unsigned int event, void *data);
78106-};
78107+} __do_const;
78108
78109 /**
78110 * struct devfreq - Device devfreq structure
78111diff --git a/include/linux/device.h b/include/linux/device.h
78112index d1d1c05..a90fdb0 100644
78113--- a/include/linux/device.h
78114+++ b/include/linux/device.h
78115@@ -310,7 +310,7 @@ struct subsys_interface {
78116 struct list_head node;
78117 int (*add_dev)(struct device *dev, struct subsys_interface *sif);
78118 int (*remove_dev)(struct device *dev, struct subsys_interface *sif);
78119-};
78120+} __do_const;
78121
78122 int subsys_interface_register(struct subsys_interface *sif);
78123 void subsys_interface_unregister(struct subsys_interface *sif);
78124@@ -506,7 +506,7 @@ struct device_type {
78125 void (*release)(struct device *dev);
78126
78127 const struct dev_pm_ops *pm;
78128-};
78129+} __do_const;
78130
78131 /* interface for exporting device attributes */
78132 struct device_attribute {
78133@@ -516,11 +516,12 @@ struct device_attribute {
78134 ssize_t (*store)(struct device *dev, struct device_attribute *attr,
78135 const char *buf, size_t count);
78136 };
78137+typedef struct device_attribute __no_const device_attribute_no_const;
78138
78139 struct dev_ext_attribute {
78140 struct device_attribute attr;
78141 void *var;
78142-};
78143+} __do_const;
78144
78145 ssize_t device_show_ulong(struct device *dev, struct device_attribute *attr,
78146 char *buf);
78147diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
78148index fd4aee2..1f28db9 100644
78149--- a/include/linux/dma-mapping.h
78150+++ b/include/linux/dma-mapping.h
78151@@ -54,7 +54,7 @@ struct dma_map_ops {
78152 u64 (*get_required_mask)(struct device *dev);
78153 #endif
78154 int is_phys;
78155-};
78156+} __do_const;
78157
78158 #define DMA_BIT_MASK(n) (((n) == 64) ? ~0ULL : ((1ULL<<(n))-1))
78159
78160diff --git a/include/linux/dmaengine.h b/include/linux/dmaengine.h
78161index 72cb0dd..7fe9a4b 100644
78162--- a/include/linux/dmaengine.h
78163+++ b/include/linux/dmaengine.h
78164@@ -1147,9 +1147,9 @@ struct dma_pinned_list {
78165 struct dma_pinned_list *dma_pin_iovec_pages(struct iovec *iov, size_t len);
78166 void dma_unpin_iovec_pages(struct dma_pinned_list* pinned_list);
78167
78168-dma_cookie_t dma_memcpy_to_iovec(struct dma_chan *chan, struct iovec *iov,
78169+dma_cookie_t __intentional_overflow(0) dma_memcpy_to_iovec(struct dma_chan *chan, struct iovec *iov,
78170 struct dma_pinned_list *pinned_list, unsigned char *kdata, size_t len);
78171-dma_cookie_t dma_memcpy_pg_to_iovec(struct dma_chan *chan, struct iovec *iov,
78172+dma_cookie_t __intentional_overflow(0) dma_memcpy_pg_to_iovec(struct dma_chan *chan, struct iovec *iov,
78173 struct dma_pinned_list *pinned_list, struct page *page,
78174 unsigned int offset, size_t len);
78175
78176diff --git a/include/linux/efi.h b/include/linux/efi.h
78177index 6c100ff..e3289b4 100644
78178--- a/include/linux/efi.h
78179+++ b/include/linux/efi.h
78180@@ -1009,6 +1009,7 @@ struct efivar_operations {
78181 efi_set_variable_t *set_variable;
78182 efi_query_variable_store_t *query_variable_store;
78183 };
78184+typedef struct efivar_operations __no_const efivar_operations_no_const;
78185
78186 struct efivars {
78187 /*
78188diff --git a/include/linux/elf.h b/include/linux/elf.h
78189index 67a5fa7..b817372 100644
78190--- a/include/linux/elf.h
78191+++ b/include/linux/elf.h
78192@@ -24,6 +24,7 @@ extern Elf32_Dyn _DYNAMIC [];
78193 #define elf_note elf32_note
78194 #define elf_addr_t Elf32_Off
78195 #define Elf_Half Elf32_Half
78196+#define elf_dyn Elf32_Dyn
78197
78198 #else
78199
78200@@ -34,6 +35,7 @@ extern Elf64_Dyn _DYNAMIC [];
78201 #define elf_note elf64_note
78202 #define elf_addr_t Elf64_Off
78203 #define Elf_Half Elf64_Half
78204+#define elf_dyn Elf64_Dyn
78205
78206 #endif
78207
78208diff --git a/include/linux/err.h b/include/linux/err.h
78209index a729120..6ede2c9 100644
78210--- a/include/linux/err.h
78211+++ b/include/linux/err.h
78212@@ -20,12 +20,12 @@
78213
78214 #define IS_ERR_VALUE(x) unlikely((x) >= (unsigned long)-MAX_ERRNO)
78215
78216-static inline void * __must_check ERR_PTR(long error)
78217+static inline void * __must_check __intentional_overflow(-1) ERR_PTR(long error)
78218 {
78219 return (void *) error;
78220 }
78221
78222-static inline long __must_check PTR_ERR(__force const void *ptr)
78223+static inline long __must_check __intentional_overflow(-1) PTR_ERR(__force const void *ptr)
78224 {
78225 return (long) ptr;
78226 }
78227diff --git a/include/linux/extcon.h b/include/linux/extcon.h
78228index f488145..3b6b04e 100644
78229--- a/include/linux/extcon.h
78230+++ b/include/linux/extcon.h
78231@@ -135,7 +135,7 @@ struct extcon_dev {
78232 /* /sys/class/extcon/.../mutually_exclusive/... */
78233 struct attribute_group attr_g_muex;
78234 struct attribute **attrs_muex;
78235- struct device_attribute *d_attrs_muex;
78236+ device_attribute_no_const *d_attrs_muex;
78237 };
78238
78239 /**
78240diff --git a/include/linux/fb.h b/include/linux/fb.h
78241index fe6ac95..898d41d 100644
78242--- a/include/linux/fb.h
78243+++ b/include/linux/fb.h
78244@@ -304,7 +304,7 @@ struct fb_ops {
78245 /* called at KDB enter and leave time to prepare the console */
78246 int (*fb_debug_enter)(struct fb_info *info);
78247 int (*fb_debug_leave)(struct fb_info *info);
78248-};
78249+} __do_const;
78250
78251 #ifdef CONFIG_FB_TILEBLITTING
78252 #define FB_TILE_CURSOR_NONE 0
78253diff --git a/include/linux/fdtable.h b/include/linux/fdtable.h
78254index 230f87b..1fd0485 100644
78255--- a/include/linux/fdtable.h
78256+++ b/include/linux/fdtable.h
78257@@ -100,7 +100,7 @@ struct files_struct *get_files_struct(struct task_struct *);
78258 void put_files_struct(struct files_struct *fs);
78259 void reset_files_struct(struct files_struct *);
78260 int unshare_files(struct files_struct **);
78261-struct files_struct *dup_fd(struct files_struct *, int *);
78262+struct files_struct *dup_fd(struct files_struct *, int *) __latent_entropy;
78263 void do_close_on_exec(struct files_struct *);
78264 int iterate_fd(struct files_struct *, unsigned,
78265 int (*)(const void *, struct file *, unsigned),
78266diff --git a/include/linux/frontswap.h b/include/linux/frontswap.h
78267index 8293262..2b3b8bd 100644
78268--- a/include/linux/frontswap.h
78269+++ b/include/linux/frontswap.h
78270@@ -11,7 +11,7 @@ struct frontswap_ops {
78271 int (*load)(unsigned, pgoff_t, struct page *);
78272 void (*invalidate_page)(unsigned, pgoff_t);
78273 void (*invalidate_area)(unsigned);
78274-};
78275+} __no_const;
78276
78277 extern bool frontswap_enabled;
78278 extern struct frontswap_ops *
78279diff --git a/include/linux/fs.h b/include/linux/fs.h
78280index 8780312..425cc22 100644
78281--- a/include/linux/fs.h
78282+++ b/include/linux/fs.h
78283@@ -398,7 +398,7 @@ struct address_space {
78284 spinlock_t private_lock; /* for use by the address_space */
78285 struct list_head private_list; /* ditto */
78286 void *private_data; /* ditto */
78287-} __attribute__((aligned(sizeof(long))));
78288+} __attribute__((aligned(sizeof(long)))) __randomize_layout;
78289 /*
78290 * On most architectures that alignment is already the case; but
78291 * must be enforced here for CRIS, to let the least significant bit
78292@@ -441,7 +441,7 @@ struct block_device {
78293 int bd_fsfreeze_count;
78294 /* Mutex for freeze */
78295 struct mutex bd_fsfreeze_mutex;
78296-};
78297+} __randomize_layout;
78298
78299 /*
78300 * Radix-tree tags, for tagging dirty and writeback pages within the pagecache
78301@@ -585,7 +585,7 @@ struct inode {
78302 #endif
78303
78304 void *i_private; /* fs or device private pointer */
78305-};
78306+} __randomize_layout;
78307
78308 static inline int inode_unhashed(struct inode *inode)
78309 {
78310@@ -778,7 +778,7 @@ struct file {
78311 struct list_head f_tfile_llink;
78312 #endif /* #ifdef CONFIG_EPOLL */
78313 struct address_space *f_mapping;
78314-} __attribute__((aligned(4))); /* lest something weird decides that 2 is OK */
78315+} __attribute__((aligned(4))) __randomize_layout; /* lest something weird decides that 2 is OK */
78316
78317 struct file_handle {
78318 __u32 handle_bytes;
78319@@ -906,7 +906,7 @@ struct file_lock {
78320 int state; /* state of grant or error if -ve */
78321 } afs;
78322 } fl_u;
78323-};
78324+} __randomize_layout;
78325
78326 /* The following constant reflects the upper bound of the file/locking space */
78327 #ifndef OFFSET_MAX
78328@@ -1255,7 +1255,7 @@ struct super_block {
78329 struct list_lru s_dentry_lru ____cacheline_aligned_in_smp;
78330 struct list_lru s_inode_lru ____cacheline_aligned_in_smp;
78331 struct rcu_head rcu;
78332-};
78333+} __randomize_layout;
78334
78335 extern struct timespec current_fs_time(struct super_block *sb);
78336
78337@@ -1477,7 +1477,8 @@ struct file_operations {
78338 long (*fallocate)(struct file *file, int mode, loff_t offset,
78339 loff_t len);
78340 int (*show_fdinfo)(struct seq_file *m, struct file *f);
78341-};
78342+} __do_const __randomize_layout;
78343+typedef struct file_operations __no_const file_operations_no_const;
78344
78345 struct inode_operations {
78346 struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int);
78347@@ -2757,4 +2758,14 @@ static inline bool dir_relax(struct inode *inode)
78348 return !IS_DEADDIR(inode);
78349 }
78350
78351+static inline bool is_sidechannel_device(const struct inode *inode)
78352+{
78353+#ifdef CONFIG_GRKERNSEC_DEVICE_SIDECHANNEL
78354+ umode_t mode = inode->i_mode;
78355+ return ((S_ISCHR(mode) || S_ISBLK(mode)) && (mode & (S_IROTH | S_IWOTH)));
78356+#else
78357+ return false;
78358+#endif
78359+}
78360+
78361 #endif /* _LINUX_FS_H */
78362diff --git a/include/linux/fs_struct.h b/include/linux/fs_struct.h
78363index 0efc3e6..fd23610 100644
78364--- a/include/linux/fs_struct.h
78365+++ b/include/linux/fs_struct.h
78366@@ -6,13 +6,13 @@
78367 #include <linux/seqlock.h>
78368
78369 struct fs_struct {
78370- int users;
78371+ atomic_t users;
78372 spinlock_t lock;
78373 seqcount_t seq;
78374 int umask;
78375 int in_exec;
78376 struct path root, pwd;
78377-};
78378+} __randomize_layout;
78379
78380 extern struct kmem_cache *fs_cachep;
78381
78382diff --git a/include/linux/fscache-cache.h b/include/linux/fscache-cache.h
78383index 7714849..a4a5c7a 100644
78384--- a/include/linux/fscache-cache.h
78385+++ b/include/linux/fscache-cache.h
78386@@ -113,7 +113,7 @@ struct fscache_operation {
78387 fscache_operation_release_t release;
78388 };
78389
78390-extern atomic_t fscache_op_debug_id;
78391+extern atomic_unchecked_t fscache_op_debug_id;
78392 extern void fscache_op_work_func(struct work_struct *work);
78393
78394 extern void fscache_enqueue_operation(struct fscache_operation *);
78395@@ -135,7 +135,7 @@ static inline void fscache_operation_init(struct fscache_operation *op,
78396 INIT_WORK(&op->work, fscache_op_work_func);
78397 atomic_set(&op->usage, 1);
78398 op->state = FSCACHE_OP_ST_INITIALISED;
78399- op->debug_id = atomic_inc_return(&fscache_op_debug_id);
78400+ op->debug_id = atomic_inc_return_unchecked(&fscache_op_debug_id);
78401 op->processor = processor;
78402 op->release = release;
78403 INIT_LIST_HEAD(&op->pend_link);
78404diff --git a/include/linux/fscache.h b/include/linux/fscache.h
78405index 115bb81..e7b812b 100644
78406--- a/include/linux/fscache.h
78407+++ b/include/linux/fscache.h
78408@@ -152,7 +152,7 @@ struct fscache_cookie_def {
78409 * - this is mandatory for any object that may have data
78410 */
78411 void (*now_uncached)(void *cookie_netfs_data);
78412-};
78413+} __do_const;
78414
78415 /*
78416 * fscache cached network filesystem type
78417diff --git a/include/linux/fsnotify.h b/include/linux/fsnotify.h
78418index 1c804b0..1432c2b 100644
78419--- a/include/linux/fsnotify.h
78420+++ b/include/linux/fsnotify.h
78421@@ -195,6 +195,9 @@ static inline void fsnotify_access(struct file *file)
78422 struct inode *inode = file_inode(file);
78423 __u32 mask = FS_ACCESS;
78424
78425+ if (is_sidechannel_device(inode))
78426+ return;
78427+
78428 if (S_ISDIR(inode->i_mode))
78429 mask |= FS_ISDIR;
78430
78431@@ -213,6 +216,9 @@ static inline void fsnotify_modify(struct file *file)
78432 struct inode *inode = file_inode(file);
78433 __u32 mask = FS_MODIFY;
78434
78435+ if (is_sidechannel_device(inode))
78436+ return;
78437+
78438 if (S_ISDIR(inode->i_mode))
78439 mask |= FS_ISDIR;
78440
78441@@ -315,7 +321,7 @@ static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
78442 */
78443 static inline const unsigned char *fsnotify_oldname_init(const unsigned char *name)
78444 {
78445- return kstrdup(name, GFP_KERNEL);
78446+ return (const unsigned char *)kstrdup((const char *)name, GFP_KERNEL);
78447 }
78448
78449 /*
78450diff --git a/include/linux/genhd.h b/include/linux/genhd.h
78451index 9f3c275..8bdff5d 100644
78452--- a/include/linux/genhd.h
78453+++ b/include/linux/genhd.h
78454@@ -194,7 +194,7 @@ struct gendisk {
78455 struct kobject *slave_dir;
78456
78457 struct timer_rand_state *random;
78458- atomic_t sync_io; /* RAID */
78459+ atomic_unchecked_t sync_io; /* RAID */
78460 struct disk_events *ev;
78461 #ifdef CONFIG_BLK_DEV_INTEGRITY
78462 struct blk_integrity *integrity;
78463@@ -435,7 +435,7 @@ extern void disk_flush_events(struct gendisk *disk, unsigned int mask);
78464 extern unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask);
78465
78466 /* drivers/char/random.c */
78467-extern void add_disk_randomness(struct gendisk *disk);
78468+extern void add_disk_randomness(struct gendisk *disk) __latent_entropy;
78469 extern void rand_initialize_disk(struct gendisk *disk);
78470
78471 static inline sector_t get_start_sect(struct block_device *bdev)
78472diff --git a/include/linux/genl_magic_func.h b/include/linux/genl_magic_func.h
78473index c0894dd..2fbf10c 100644
78474--- a/include/linux/genl_magic_func.h
78475+++ b/include/linux/genl_magic_func.h
78476@@ -246,7 +246,7 @@ const char *CONCAT_(GENL_MAGIC_FAMILY, _genl_cmd_to_str)(__u8 cmd)
78477 },
78478
78479 #define ZZZ_genl_ops CONCAT_(GENL_MAGIC_FAMILY, _genl_ops)
78480-static struct genl_ops ZZZ_genl_ops[] __read_mostly = {
78481+static struct genl_ops ZZZ_genl_ops[] = {
78482 #include GENL_MAGIC_INCLUDE_FILE
78483 };
78484
78485diff --git a/include/linux/gfp.h b/include/linux/gfp.h
78486index 39b81dc..819dc51 100644
78487--- a/include/linux/gfp.h
78488+++ b/include/linux/gfp.h
78489@@ -36,6 +36,13 @@ struct vm_area_struct;
78490 #define ___GFP_NO_KSWAPD 0x400000u
78491 #define ___GFP_OTHER_NODE 0x800000u
78492 #define ___GFP_WRITE 0x1000000u
78493+
78494+#ifdef CONFIG_PAX_USERCOPY_SLABS
78495+#define ___GFP_USERCOPY 0x2000000u
78496+#else
78497+#define ___GFP_USERCOPY 0
78498+#endif
78499+
78500 /* If the above are modified, __GFP_BITS_SHIFT may need updating */
78501
78502 /*
78503@@ -93,6 +100,7 @@ struct vm_area_struct;
78504 #define __GFP_OTHER_NODE ((__force gfp_t)___GFP_OTHER_NODE) /* On behalf of other node */
78505 #define __GFP_KMEMCG ((__force gfp_t)___GFP_KMEMCG) /* Allocation comes from a memcg-accounted resource */
78506 #define __GFP_WRITE ((__force gfp_t)___GFP_WRITE) /* Allocator intends to dirty page */
78507+#define __GFP_USERCOPY ((__force gfp_t)___GFP_USERCOPY)/* Allocator intends to copy page to/from userland */
78508
78509 /*
78510 * This may seem redundant, but it's a way of annotating false positives vs.
78511@@ -100,7 +108,7 @@ struct vm_area_struct;
78512 */
78513 #define __GFP_NOTRACK_FALSE_POSITIVE (__GFP_NOTRACK)
78514
78515-#define __GFP_BITS_SHIFT 25 /* Room for N __GFP_FOO bits */
78516+#define __GFP_BITS_SHIFT 26 /* Room for N __GFP_FOO bits */
78517 #define __GFP_BITS_MASK ((__force gfp_t)((1 << __GFP_BITS_SHIFT) - 1))
78518
78519 /* This equals 0, but use constants in case they ever change */
78520@@ -158,6 +166,8 @@ struct vm_area_struct;
78521 /* 4GB DMA on some platforms */
78522 #define GFP_DMA32 __GFP_DMA32
78523
78524+#define GFP_USERCOPY __GFP_USERCOPY
78525+
78526 /* Convert GFP flags to their corresponding migrate type */
78527 static inline int allocflags_to_migratetype(gfp_t gfp_flags)
78528 {
78529diff --git a/include/linux/gracl.h b/include/linux/gracl.h
78530new file mode 100644
78531index 0000000..edb2cb6
78532--- /dev/null
78533+++ b/include/linux/gracl.h
78534@@ -0,0 +1,340 @@
78535+#ifndef GR_ACL_H
78536+#define GR_ACL_H
78537+
78538+#include <linux/grdefs.h>
78539+#include <linux/resource.h>
78540+#include <linux/capability.h>
78541+#include <linux/dcache.h>
78542+#include <asm/resource.h>
78543+
78544+/* Major status information */
78545+
78546+#define GR_VERSION "grsecurity 3.0"
78547+#define GRSECURITY_VERSION 0x3000
78548+
78549+enum {
78550+ GR_SHUTDOWN = 0,
78551+ GR_ENABLE = 1,
78552+ GR_SPROLE = 2,
78553+ GR_OLDRELOAD = 3,
78554+ GR_SEGVMOD = 4,
78555+ GR_STATUS = 5,
78556+ GR_UNSPROLE = 6,
78557+ GR_PASSSET = 7,
78558+ GR_SPROLEPAM = 8,
78559+ GR_RELOAD = 9,
78560+};
78561+
78562+/* Password setup definitions
78563+ * kernel/grhash.c */
78564+enum {
78565+ GR_PW_LEN = 128,
78566+ GR_SALT_LEN = 16,
78567+ GR_SHA_LEN = 32,
78568+};
78569+
78570+enum {
78571+ GR_SPROLE_LEN = 64,
78572+};
78573+
78574+enum {
78575+ GR_NO_GLOB = 0,
78576+ GR_REG_GLOB,
78577+ GR_CREATE_GLOB
78578+};
78579+
78580+#define GR_NLIMITS 32
78581+
78582+/* Begin Data Structures */
78583+
78584+struct sprole_pw {
78585+ unsigned char *rolename;
78586+ unsigned char salt[GR_SALT_LEN];
78587+ unsigned char sum[GR_SHA_LEN]; /* 256-bit SHA hash of the password */
78588+};
78589+
78590+struct name_entry {
78591+ __u32 key;
78592+ ino_t inode;
78593+ dev_t device;
78594+ char *name;
78595+ __u16 len;
78596+ __u8 deleted;
78597+ struct name_entry *prev;
78598+ struct name_entry *next;
78599+};
78600+
78601+struct inodev_entry {
78602+ struct name_entry *nentry;
78603+ struct inodev_entry *prev;
78604+ struct inodev_entry *next;
78605+};
78606+
78607+struct acl_role_db {
78608+ struct acl_role_label **r_hash;
78609+ __u32 r_size;
78610+};
78611+
78612+struct inodev_db {
78613+ struct inodev_entry **i_hash;
78614+ __u32 i_size;
78615+};
78616+
78617+struct name_db {
78618+ struct name_entry **n_hash;
78619+ __u32 n_size;
78620+};
78621+
78622+struct crash_uid {
78623+ uid_t uid;
78624+ unsigned long expires;
78625+};
78626+
78627+struct gr_hash_struct {
78628+ void **table;
78629+ void **nametable;
78630+ void *first;
78631+ __u32 table_size;
78632+ __u32 used_size;
78633+ int type;
78634+};
78635+
78636+/* Userspace Grsecurity ACL data structures */
78637+
78638+struct acl_subject_label {
78639+ char *filename;
78640+ ino_t inode;
78641+ dev_t device;
78642+ __u32 mode;
78643+ kernel_cap_t cap_mask;
78644+ kernel_cap_t cap_lower;
78645+ kernel_cap_t cap_invert_audit;
78646+
78647+ struct rlimit res[GR_NLIMITS];
78648+ __u32 resmask;
78649+
78650+ __u8 user_trans_type;
78651+ __u8 group_trans_type;
78652+ uid_t *user_transitions;
78653+ gid_t *group_transitions;
78654+ __u16 user_trans_num;
78655+ __u16 group_trans_num;
78656+
78657+ __u32 sock_families[2];
78658+ __u32 ip_proto[8];
78659+ __u32 ip_type;
78660+ struct acl_ip_label **ips;
78661+ __u32 ip_num;
78662+ __u32 inaddr_any_override;
78663+
78664+ __u32 crashes;
78665+ unsigned long expires;
78666+
78667+ struct acl_subject_label *parent_subject;
78668+ struct gr_hash_struct *hash;
78669+ struct acl_subject_label *prev;
78670+ struct acl_subject_label *next;
78671+
78672+ struct acl_object_label **obj_hash;
78673+ __u32 obj_hash_size;
78674+ __u16 pax_flags;
78675+};
78676+
78677+struct role_allowed_ip {
78678+ __u32 addr;
78679+ __u32 netmask;
78680+
78681+ struct role_allowed_ip *prev;
78682+ struct role_allowed_ip *next;
78683+};
78684+
78685+struct role_transition {
78686+ char *rolename;
78687+
78688+ struct role_transition *prev;
78689+ struct role_transition *next;
78690+};
78691+
78692+struct acl_role_label {
78693+ char *rolename;
78694+ uid_t uidgid;
78695+ __u16 roletype;
78696+
78697+ __u16 auth_attempts;
78698+ unsigned long expires;
78699+
78700+ struct acl_subject_label *root_label;
78701+ struct gr_hash_struct *hash;
78702+
78703+ struct acl_role_label *prev;
78704+ struct acl_role_label *next;
78705+
78706+ struct role_transition *transitions;
78707+ struct role_allowed_ip *allowed_ips;
78708+ uid_t *domain_children;
78709+ __u16 domain_child_num;
78710+
78711+ umode_t umask;
78712+
78713+ struct acl_subject_label **subj_hash;
78714+ __u32 subj_hash_size;
78715+};
78716+
78717+struct user_acl_role_db {
78718+ struct acl_role_label **r_table;
78719+ __u32 num_pointers; /* Number of allocations to track */
78720+ __u32 num_roles; /* Number of roles */
78721+ __u32 num_domain_children; /* Number of domain children */
78722+ __u32 num_subjects; /* Number of subjects */
78723+ __u32 num_objects; /* Number of objects */
78724+};
78725+
78726+struct acl_object_label {
78727+ char *filename;
78728+ ino_t inode;
78729+ dev_t device;
78730+ __u32 mode;
78731+
78732+ struct acl_subject_label *nested;
78733+ struct acl_object_label *globbed;
78734+
78735+ /* next two structures not used */
78736+
78737+ struct acl_object_label *prev;
78738+ struct acl_object_label *next;
78739+};
78740+
78741+struct acl_ip_label {
78742+ char *iface;
78743+ __u32 addr;
78744+ __u32 netmask;
78745+ __u16 low, high;
78746+ __u8 mode;
78747+ __u32 type;
78748+ __u32 proto[8];
78749+
78750+ /* next two structures not used */
78751+
78752+ struct acl_ip_label *prev;
78753+ struct acl_ip_label *next;
78754+};
78755+
78756+struct gr_arg {
78757+ struct user_acl_role_db role_db;
78758+ unsigned char pw[GR_PW_LEN];
78759+ unsigned char salt[GR_SALT_LEN];
78760+ unsigned char sum[GR_SHA_LEN];
78761+ unsigned char sp_role[GR_SPROLE_LEN];
78762+ struct sprole_pw *sprole_pws;
78763+ dev_t segv_device;
78764+ ino_t segv_inode;
78765+ uid_t segv_uid;
78766+ __u16 num_sprole_pws;
78767+ __u16 mode;
78768+};
78769+
78770+struct gr_arg_wrapper {
78771+ struct gr_arg *arg;
78772+ __u32 version;
78773+ __u32 size;
78774+};
78775+
78776+struct subject_map {
78777+ struct acl_subject_label *user;
78778+ struct acl_subject_label *kernel;
78779+ struct subject_map *prev;
78780+ struct subject_map *next;
78781+};
78782+
78783+struct acl_subj_map_db {
78784+ struct subject_map **s_hash;
78785+ __u32 s_size;
78786+};
78787+
78788+struct gr_policy_state {
78789+ struct sprole_pw **acl_special_roles;
78790+ __u16 num_sprole_pws;
78791+ struct acl_role_label *kernel_role;
78792+ struct acl_role_label *role_list;
78793+ struct acl_role_label *default_role;
78794+ struct acl_role_db acl_role_set;
78795+ struct acl_subj_map_db subj_map_set;
78796+ struct name_db name_set;
78797+ struct inodev_db inodev_set;
78798+};
78799+
78800+struct gr_alloc_state {
78801+ unsigned long alloc_stack_next;
78802+ unsigned long alloc_stack_size;
78803+ void **alloc_stack;
78804+};
78805+
78806+struct gr_reload_state {
78807+ struct gr_policy_state oldpolicy;
78808+ struct gr_alloc_state oldalloc;
78809+ struct gr_policy_state newpolicy;
78810+ struct gr_alloc_state newalloc;
78811+ struct gr_policy_state *oldpolicy_ptr;
78812+ struct gr_alloc_state *oldalloc_ptr;
78813+ unsigned char oldmode;
78814+};
78815+
78816+/* End Data Structures Section */
78817+
78818+/* Hash functions generated by empirical testing by Brad Spengler
78819+ Makes good use of the low bits of the inode. Generally 0-1 times
78820+ in loop for successful match. 0-3 for unsuccessful match.
78821+ Shift/add algorithm with modulus of table size and an XOR*/
78822+
78823+static __inline__ unsigned int
78824+gr_rhash(const uid_t uid, const __u16 type, const unsigned int sz)
78825+{
78826+ return ((((uid + type) << (16 + type)) ^ uid) % sz);
78827+}
78828+
78829+ static __inline__ unsigned int
78830+gr_shash(const struct acl_subject_label *userp, const unsigned int sz)
78831+{
78832+ return ((const unsigned long)userp % sz);
78833+}
78834+
78835+static __inline__ unsigned int
78836+gr_fhash(const ino_t ino, const dev_t dev, const unsigned int sz)
78837+{
78838+ return (((ino + dev) ^ ((ino << 13) + (ino << 23) + (dev << 9))) % sz);
78839+}
78840+
78841+static __inline__ unsigned int
78842+gr_nhash(const char *name, const __u16 len, const unsigned int sz)
78843+{
78844+ return full_name_hash((const unsigned char *)name, len) % sz;
78845+}
78846+
78847+#define FOR_EACH_SUBJECT_START(role,subj,iter) \
78848+ subj = NULL; \
78849+ iter = 0; \
78850+ while (iter < role->subj_hash_size) { \
78851+ if (subj == NULL) \
78852+ subj = role->subj_hash[iter]; \
78853+ if (subj == NULL) { \
78854+ iter++; \
78855+ continue; \
78856+ }
78857+
78858+#define FOR_EACH_SUBJECT_END(subj,iter) \
78859+ subj = subj->next; \
78860+ if (subj == NULL) \
78861+ iter++; \
78862+ }
78863+
78864+
78865+#define FOR_EACH_NESTED_SUBJECT_START(role,subj) \
78866+ subj = role->hash->first; \
78867+ while (subj != NULL) {
78868+
78869+#define FOR_EACH_NESTED_SUBJECT_END(subj) \
78870+ subj = subj->next; \
78871+ }
78872+
78873+#endif
78874+
78875diff --git a/include/linux/gracl_compat.h b/include/linux/gracl_compat.h
78876new file mode 100644
78877index 0000000..33ebd1f
78878--- /dev/null
78879+++ b/include/linux/gracl_compat.h
78880@@ -0,0 +1,156 @@
78881+#ifndef GR_ACL_COMPAT_H
78882+#define GR_ACL_COMPAT_H
78883+
78884+#include <linux/resource.h>
78885+#include <asm/resource.h>
78886+
78887+struct sprole_pw_compat {
78888+ compat_uptr_t rolename;
78889+ unsigned char salt[GR_SALT_LEN];
78890+ unsigned char sum[GR_SHA_LEN];
78891+};
78892+
78893+struct gr_hash_struct_compat {
78894+ compat_uptr_t table;
78895+ compat_uptr_t nametable;
78896+ compat_uptr_t first;
78897+ __u32 table_size;
78898+ __u32 used_size;
78899+ int type;
78900+};
78901+
78902+struct acl_subject_label_compat {
78903+ compat_uptr_t filename;
78904+ compat_ino_t inode;
78905+ __u32 device;
78906+ __u32 mode;
78907+ kernel_cap_t cap_mask;
78908+ kernel_cap_t cap_lower;
78909+ kernel_cap_t cap_invert_audit;
78910+
78911+ struct compat_rlimit res[GR_NLIMITS];
78912+ __u32 resmask;
78913+
78914+ __u8 user_trans_type;
78915+ __u8 group_trans_type;
78916+ compat_uptr_t user_transitions;
78917+ compat_uptr_t group_transitions;
78918+ __u16 user_trans_num;
78919+ __u16 group_trans_num;
78920+
78921+ __u32 sock_families[2];
78922+ __u32 ip_proto[8];
78923+ __u32 ip_type;
78924+ compat_uptr_t ips;
78925+ __u32 ip_num;
78926+ __u32 inaddr_any_override;
78927+
78928+ __u32 crashes;
78929+ compat_ulong_t expires;
78930+
78931+ compat_uptr_t parent_subject;
78932+ compat_uptr_t hash;
78933+ compat_uptr_t prev;
78934+ compat_uptr_t next;
78935+
78936+ compat_uptr_t obj_hash;
78937+ __u32 obj_hash_size;
78938+ __u16 pax_flags;
78939+};
78940+
78941+struct role_allowed_ip_compat {
78942+ __u32 addr;
78943+ __u32 netmask;
78944+
78945+ compat_uptr_t prev;
78946+ compat_uptr_t next;
78947+};
78948+
78949+struct role_transition_compat {
78950+ compat_uptr_t rolename;
78951+
78952+ compat_uptr_t prev;
78953+ compat_uptr_t next;
78954+};
78955+
78956+struct acl_role_label_compat {
78957+ compat_uptr_t rolename;
78958+ uid_t uidgid;
78959+ __u16 roletype;
78960+
78961+ __u16 auth_attempts;
78962+ compat_ulong_t expires;
78963+
78964+ compat_uptr_t root_label;
78965+ compat_uptr_t hash;
78966+
78967+ compat_uptr_t prev;
78968+ compat_uptr_t next;
78969+
78970+ compat_uptr_t transitions;
78971+ compat_uptr_t allowed_ips;
78972+ compat_uptr_t domain_children;
78973+ __u16 domain_child_num;
78974+
78975+ umode_t umask;
78976+
78977+ compat_uptr_t subj_hash;
78978+ __u32 subj_hash_size;
78979+};
78980+
78981+struct user_acl_role_db_compat {
78982+ compat_uptr_t r_table;
78983+ __u32 num_pointers;
78984+ __u32 num_roles;
78985+ __u32 num_domain_children;
78986+ __u32 num_subjects;
78987+ __u32 num_objects;
78988+};
78989+
78990+struct acl_object_label_compat {
78991+ compat_uptr_t filename;
78992+ compat_ino_t inode;
78993+ __u32 device;
78994+ __u32 mode;
78995+
78996+ compat_uptr_t nested;
78997+ compat_uptr_t globbed;
78998+
78999+ compat_uptr_t prev;
79000+ compat_uptr_t next;
79001+};
79002+
79003+struct acl_ip_label_compat {
79004+ compat_uptr_t iface;
79005+ __u32 addr;
79006+ __u32 netmask;
79007+ __u16 low, high;
79008+ __u8 mode;
79009+ __u32 type;
79010+ __u32 proto[8];
79011+
79012+ compat_uptr_t prev;
79013+ compat_uptr_t next;
79014+};
79015+
79016+struct gr_arg_compat {
79017+ struct user_acl_role_db_compat role_db;
79018+ unsigned char pw[GR_PW_LEN];
79019+ unsigned char salt[GR_SALT_LEN];
79020+ unsigned char sum[GR_SHA_LEN];
79021+ unsigned char sp_role[GR_SPROLE_LEN];
79022+ compat_uptr_t sprole_pws;
79023+ __u32 segv_device;
79024+ compat_ino_t segv_inode;
79025+ uid_t segv_uid;
79026+ __u16 num_sprole_pws;
79027+ __u16 mode;
79028+};
79029+
79030+struct gr_arg_wrapper_compat {
79031+ compat_uptr_t arg;
79032+ __u32 version;
79033+ __u32 size;
79034+};
79035+
79036+#endif
79037diff --git a/include/linux/gralloc.h b/include/linux/gralloc.h
79038new file mode 100644
79039index 0000000..323ecf2
79040--- /dev/null
79041+++ b/include/linux/gralloc.h
79042@@ -0,0 +1,9 @@
79043+#ifndef __GRALLOC_H
79044+#define __GRALLOC_H
79045+
79046+void acl_free_all(void);
79047+int acl_alloc_stack_init(unsigned long size);
79048+void *acl_alloc(unsigned long len);
79049+void *acl_alloc_num(unsigned long num, unsigned long len);
79050+
79051+#endif
79052diff --git a/include/linux/grdefs.h b/include/linux/grdefs.h
79053new file mode 100644
79054index 0000000..be66033
79055--- /dev/null
79056+++ b/include/linux/grdefs.h
79057@@ -0,0 +1,140 @@
79058+#ifndef GRDEFS_H
79059+#define GRDEFS_H
79060+
79061+/* Begin grsecurity status declarations */
79062+
79063+enum {
79064+ GR_READY = 0x01,
79065+ GR_STATUS_INIT = 0x00 // disabled state
79066+};
79067+
79068+/* Begin ACL declarations */
79069+
79070+/* Role flags */
79071+
79072+enum {
79073+ GR_ROLE_USER = 0x0001,
79074+ GR_ROLE_GROUP = 0x0002,
79075+ GR_ROLE_DEFAULT = 0x0004,
79076+ GR_ROLE_SPECIAL = 0x0008,
79077+ GR_ROLE_AUTH = 0x0010,
79078+ GR_ROLE_NOPW = 0x0020,
79079+ GR_ROLE_GOD = 0x0040,
79080+ GR_ROLE_LEARN = 0x0080,
79081+ GR_ROLE_TPE = 0x0100,
79082+ GR_ROLE_DOMAIN = 0x0200,
79083+ GR_ROLE_PAM = 0x0400,
79084+ GR_ROLE_PERSIST = 0x0800
79085+};
79086+
79087+/* ACL Subject and Object mode flags */
79088+enum {
79089+ GR_DELETED = 0x80000000
79090+};
79091+
79092+/* ACL Object-only mode flags */
79093+enum {
79094+ GR_READ = 0x00000001,
79095+ GR_APPEND = 0x00000002,
79096+ GR_WRITE = 0x00000004,
79097+ GR_EXEC = 0x00000008,
79098+ GR_FIND = 0x00000010,
79099+ GR_INHERIT = 0x00000020,
79100+ GR_SETID = 0x00000040,
79101+ GR_CREATE = 0x00000080,
79102+ GR_DELETE = 0x00000100,
79103+ GR_LINK = 0x00000200,
79104+ GR_AUDIT_READ = 0x00000400,
79105+ GR_AUDIT_APPEND = 0x00000800,
79106+ GR_AUDIT_WRITE = 0x00001000,
79107+ GR_AUDIT_EXEC = 0x00002000,
79108+ GR_AUDIT_FIND = 0x00004000,
79109+ GR_AUDIT_INHERIT= 0x00008000,
79110+ GR_AUDIT_SETID = 0x00010000,
79111+ GR_AUDIT_CREATE = 0x00020000,
79112+ GR_AUDIT_DELETE = 0x00040000,
79113+ GR_AUDIT_LINK = 0x00080000,
79114+ GR_PTRACERD = 0x00100000,
79115+ GR_NOPTRACE = 0x00200000,
79116+ GR_SUPPRESS = 0x00400000,
79117+ GR_NOLEARN = 0x00800000,
79118+ GR_INIT_TRANSFER= 0x01000000
79119+};
79120+
79121+#define GR_AUDITS (GR_AUDIT_READ | GR_AUDIT_WRITE | GR_AUDIT_APPEND | GR_AUDIT_EXEC | \
79122+ GR_AUDIT_FIND | GR_AUDIT_INHERIT | GR_AUDIT_SETID | \
79123+ GR_AUDIT_CREATE | GR_AUDIT_DELETE | GR_AUDIT_LINK)
79124+
79125+/* ACL subject-only mode flags */
79126+enum {
79127+ GR_KILL = 0x00000001,
79128+ GR_VIEW = 0x00000002,
79129+ GR_PROTECTED = 0x00000004,
79130+ GR_LEARN = 0x00000008,
79131+ GR_OVERRIDE = 0x00000010,
79132+ /* just a placeholder, this mode is only used in userspace */
79133+ GR_DUMMY = 0x00000020,
79134+ GR_PROTSHM = 0x00000040,
79135+ GR_KILLPROC = 0x00000080,
79136+ GR_KILLIPPROC = 0x00000100,
79137+ /* just a placeholder, this mode is only used in userspace */
79138+ GR_NOTROJAN = 0x00000200,
79139+ GR_PROTPROCFD = 0x00000400,
79140+ GR_PROCACCT = 0x00000800,
79141+ GR_RELAXPTRACE = 0x00001000,
79142+ //GR_NESTED = 0x00002000,
79143+ GR_INHERITLEARN = 0x00004000,
79144+ GR_PROCFIND = 0x00008000,
79145+ GR_POVERRIDE = 0x00010000,
79146+ GR_KERNELAUTH = 0x00020000,
79147+ GR_ATSECURE = 0x00040000,
79148+ GR_SHMEXEC = 0x00080000
79149+};
79150+
79151+enum {
79152+ GR_PAX_ENABLE_SEGMEXEC = 0x0001,
79153+ GR_PAX_ENABLE_PAGEEXEC = 0x0002,
79154+ GR_PAX_ENABLE_MPROTECT = 0x0004,
79155+ GR_PAX_ENABLE_RANDMMAP = 0x0008,
79156+ GR_PAX_ENABLE_EMUTRAMP = 0x0010,
79157+ GR_PAX_DISABLE_SEGMEXEC = 0x0100,
79158+ GR_PAX_DISABLE_PAGEEXEC = 0x0200,
79159+ GR_PAX_DISABLE_MPROTECT = 0x0400,
79160+ GR_PAX_DISABLE_RANDMMAP = 0x0800,
79161+ GR_PAX_DISABLE_EMUTRAMP = 0x1000,
79162+};
79163+
79164+enum {
79165+ GR_ID_USER = 0x01,
79166+ GR_ID_GROUP = 0x02,
79167+};
79168+
79169+enum {
79170+ GR_ID_ALLOW = 0x01,
79171+ GR_ID_DENY = 0x02,
79172+};
79173+
79174+#define GR_CRASH_RES 31
79175+#define GR_UIDTABLE_MAX 500
79176+
79177+/* begin resource learning section */
79178+enum {
79179+ GR_RLIM_CPU_BUMP = 60,
79180+ GR_RLIM_FSIZE_BUMP = 50000,
79181+ GR_RLIM_DATA_BUMP = 10000,
79182+ GR_RLIM_STACK_BUMP = 1000,
79183+ GR_RLIM_CORE_BUMP = 10000,
79184+ GR_RLIM_RSS_BUMP = 500000,
79185+ GR_RLIM_NPROC_BUMP = 1,
79186+ GR_RLIM_NOFILE_BUMP = 5,
79187+ GR_RLIM_MEMLOCK_BUMP = 50000,
79188+ GR_RLIM_AS_BUMP = 500000,
79189+ GR_RLIM_LOCKS_BUMP = 2,
79190+ GR_RLIM_SIGPENDING_BUMP = 5,
79191+ GR_RLIM_MSGQUEUE_BUMP = 10000,
79192+ GR_RLIM_NICE_BUMP = 1,
79193+ GR_RLIM_RTPRIO_BUMP = 1,
79194+ GR_RLIM_RTTIME_BUMP = 1000000
79195+};
79196+
79197+#endif
79198diff --git a/include/linux/grinternal.h b/include/linux/grinternal.h
79199new file mode 100644
79200index 0000000..d25522e
79201--- /dev/null
79202+++ b/include/linux/grinternal.h
79203@@ -0,0 +1,229 @@
79204+#ifndef __GRINTERNAL_H
79205+#define __GRINTERNAL_H
79206+
79207+#ifdef CONFIG_GRKERNSEC
79208+
79209+#include <linux/fs.h>
79210+#include <linux/mnt_namespace.h>
79211+#include <linux/nsproxy.h>
79212+#include <linux/gracl.h>
79213+#include <linux/grdefs.h>
79214+#include <linux/grmsg.h>
79215+
79216+void gr_add_learn_entry(const char *fmt, ...)
79217+ __attribute__ ((format (printf, 1, 2)));
79218+__u32 gr_search_file(const struct dentry *dentry, const __u32 mode,
79219+ const struct vfsmount *mnt);
79220+__u32 gr_check_create(const struct dentry *new_dentry,
79221+ const struct dentry *parent,
79222+ const struct vfsmount *mnt, const __u32 mode);
79223+int gr_check_protected_task(const struct task_struct *task);
79224+__u32 to_gr_audit(const __u32 reqmode);
79225+int gr_set_acls(const int type);
79226+int gr_acl_is_enabled(void);
79227+char gr_roletype_to_char(void);
79228+
79229+void gr_handle_alertkill(struct task_struct *task);
79230+char *gr_to_filename(const struct dentry *dentry,
79231+ const struct vfsmount *mnt);
79232+char *gr_to_filename1(const struct dentry *dentry,
79233+ const struct vfsmount *mnt);
79234+char *gr_to_filename2(const struct dentry *dentry,
79235+ const struct vfsmount *mnt);
79236+char *gr_to_filename3(const struct dentry *dentry,
79237+ const struct vfsmount *mnt);
79238+
79239+extern int grsec_enable_ptrace_readexec;
79240+extern int grsec_enable_harden_ptrace;
79241+extern int grsec_enable_link;
79242+extern int grsec_enable_fifo;
79243+extern int grsec_enable_execve;
79244+extern int grsec_enable_shm;
79245+extern int grsec_enable_execlog;
79246+extern int grsec_enable_signal;
79247+extern int grsec_enable_audit_ptrace;
79248+extern int grsec_enable_forkfail;
79249+extern int grsec_enable_time;
79250+extern int grsec_enable_rofs;
79251+extern int grsec_deny_new_usb;
79252+extern int grsec_enable_chroot_shmat;
79253+extern int grsec_enable_chroot_mount;
79254+extern int grsec_enable_chroot_double;
79255+extern int grsec_enable_chroot_pivot;
79256+extern int grsec_enable_chroot_chdir;
79257+extern int grsec_enable_chroot_chmod;
79258+extern int grsec_enable_chroot_mknod;
79259+extern int grsec_enable_chroot_fchdir;
79260+extern int grsec_enable_chroot_nice;
79261+extern int grsec_enable_chroot_execlog;
79262+extern int grsec_enable_chroot_caps;
79263+extern int grsec_enable_chroot_sysctl;
79264+extern int grsec_enable_chroot_unix;
79265+extern int grsec_enable_symlinkown;
79266+extern kgid_t grsec_symlinkown_gid;
79267+extern int grsec_enable_tpe;
79268+extern kgid_t grsec_tpe_gid;
79269+extern int grsec_enable_tpe_all;
79270+extern int grsec_enable_tpe_invert;
79271+extern int grsec_enable_socket_all;
79272+extern kgid_t grsec_socket_all_gid;
79273+extern int grsec_enable_socket_client;
79274+extern kgid_t grsec_socket_client_gid;
79275+extern int grsec_enable_socket_server;
79276+extern kgid_t grsec_socket_server_gid;
79277+extern kgid_t grsec_audit_gid;
79278+extern int grsec_enable_group;
79279+extern int grsec_enable_log_rwxmaps;
79280+extern int grsec_enable_mount;
79281+extern int grsec_enable_chdir;
79282+extern int grsec_resource_logging;
79283+extern int grsec_enable_blackhole;
79284+extern int grsec_lastack_retries;
79285+extern int grsec_enable_brute;
79286+extern int grsec_enable_harden_ipc;
79287+extern int grsec_lock;
79288+
79289+extern spinlock_t grsec_alert_lock;
79290+extern unsigned long grsec_alert_wtime;
79291+extern unsigned long grsec_alert_fyet;
79292+
79293+extern spinlock_t grsec_audit_lock;
79294+
79295+extern rwlock_t grsec_exec_file_lock;
79296+
79297+#define gr_task_fullpath(tsk) ((tsk)->exec_file ? \
79298+ gr_to_filename2((tsk)->exec_file->f_path.dentry, \
79299+ (tsk)->exec_file->f_path.mnt) : "/")
79300+
79301+#define gr_parent_task_fullpath(tsk) ((tsk)->real_parent->exec_file ? \
79302+ gr_to_filename3((tsk)->real_parent->exec_file->f_path.dentry, \
79303+ (tsk)->real_parent->exec_file->f_path.mnt) : "/")
79304+
79305+#define gr_task_fullpath0(tsk) ((tsk)->exec_file ? \
79306+ gr_to_filename((tsk)->exec_file->f_path.dentry, \
79307+ (tsk)->exec_file->f_path.mnt) : "/")
79308+
79309+#define gr_parent_task_fullpath0(tsk) ((tsk)->real_parent->exec_file ? \
79310+ gr_to_filename1((tsk)->real_parent->exec_file->f_path.dentry, \
79311+ (tsk)->real_parent->exec_file->f_path.mnt) : "/")
79312+
79313+#define proc_is_chrooted(tsk_a) ((tsk_a)->gr_is_chrooted)
79314+
79315+#define have_same_root(tsk_a,tsk_b) ((tsk_a)->gr_chroot_dentry == (tsk_b)->gr_chroot_dentry)
79316+
79317+static inline bool gr_is_same_file(const struct file *file1, const struct file *file2)
79318+{
79319+ if (file1 && file2) {
79320+ const struct inode *inode1 = file1->f_path.dentry->d_inode;
79321+ const struct inode *inode2 = file2->f_path.dentry->d_inode;
79322+ if (inode1->i_ino == inode2->i_ino && inode1->i_sb->s_dev == inode2->i_sb->s_dev)
79323+ return true;
79324+ }
79325+
79326+ return false;
79327+}
79328+
79329+#define GR_CHROOT_CAPS {{ \
79330+ CAP_TO_MASK(CAP_LINUX_IMMUTABLE) | CAP_TO_MASK(CAP_NET_ADMIN) | \
79331+ CAP_TO_MASK(CAP_SYS_MODULE) | CAP_TO_MASK(CAP_SYS_RAWIO) | \
79332+ CAP_TO_MASK(CAP_SYS_PACCT) | CAP_TO_MASK(CAP_SYS_ADMIN) | \
79333+ CAP_TO_MASK(CAP_SYS_BOOT) | CAP_TO_MASK(CAP_SYS_TIME) | \
79334+ CAP_TO_MASK(CAP_NET_RAW) | CAP_TO_MASK(CAP_SYS_TTY_CONFIG) | \
79335+ CAP_TO_MASK(CAP_IPC_OWNER) | CAP_TO_MASK(CAP_SETFCAP), \
79336+ CAP_TO_MASK(CAP_SYSLOG) | CAP_TO_MASK(CAP_MAC_ADMIN) }}
79337+
79338+#define security_learn(normal_msg,args...) \
79339+({ \
79340+ read_lock(&grsec_exec_file_lock); \
79341+ gr_add_learn_entry(normal_msg "\n", ## args); \
79342+ read_unlock(&grsec_exec_file_lock); \
79343+})
79344+
79345+enum {
79346+ GR_DO_AUDIT,
79347+ GR_DONT_AUDIT,
79348+ /* used for non-audit messages that we shouldn't kill the task on */
79349+ GR_DONT_AUDIT_GOOD
79350+};
79351+
79352+enum {
79353+ GR_TTYSNIFF,
79354+ GR_RBAC,
79355+ GR_RBAC_STR,
79356+ GR_STR_RBAC,
79357+ GR_RBAC_MODE2,
79358+ GR_RBAC_MODE3,
79359+ GR_FILENAME,
79360+ GR_SYSCTL_HIDDEN,
79361+ GR_NOARGS,
79362+ GR_ONE_INT,
79363+ GR_ONE_INT_TWO_STR,
79364+ GR_ONE_STR,
79365+ GR_STR_INT,
79366+ GR_TWO_STR_INT,
79367+ GR_TWO_INT,
79368+ GR_TWO_U64,
79369+ GR_THREE_INT,
79370+ GR_FIVE_INT_TWO_STR,
79371+ GR_TWO_STR,
79372+ GR_THREE_STR,
79373+ GR_FOUR_STR,
79374+ GR_STR_FILENAME,
79375+ GR_FILENAME_STR,
79376+ GR_FILENAME_TWO_INT,
79377+ GR_FILENAME_TWO_INT_STR,
79378+ GR_TEXTREL,
79379+ GR_PTRACE,
79380+ GR_RESOURCE,
79381+ GR_CAP,
79382+ GR_SIG,
79383+ GR_SIG2,
79384+ GR_CRASH1,
79385+ GR_CRASH2,
79386+ GR_PSACCT,
79387+ GR_RWXMAP,
79388+ GR_RWXMAPVMA
79389+};
79390+
79391+#define gr_log_hidden_sysctl(audit, msg, str) gr_log_varargs(audit, msg, GR_SYSCTL_HIDDEN, str)
79392+#define gr_log_ttysniff(audit, msg, task) gr_log_varargs(audit, msg, GR_TTYSNIFF, task)
79393+#define gr_log_fs_rbac_generic(audit, msg, dentry, mnt) gr_log_varargs(audit, msg, GR_RBAC, dentry, mnt)
79394+#define gr_log_fs_rbac_str(audit, msg, dentry, mnt, str) gr_log_varargs(audit, msg, GR_RBAC_STR, dentry, mnt, str)
79395+#define gr_log_fs_str_rbac(audit, msg, str, dentry, mnt) gr_log_varargs(audit, msg, GR_STR_RBAC, str, dentry, mnt)
79396+#define gr_log_fs_rbac_mode2(audit, msg, dentry, mnt, str1, str2) gr_log_varargs(audit, msg, GR_RBAC_MODE2, dentry, mnt, str1, str2)
79397+#define gr_log_fs_rbac_mode3(audit, msg, dentry, mnt, str1, str2, str3) gr_log_varargs(audit, msg, GR_RBAC_MODE3, dentry, mnt, str1, str2, str3)
79398+#define gr_log_fs_generic(audit, msg, dentry, mnt) gr_log_varargs(audit, msg, GR_FILENAME, dentry, mnt)
79399+#define gr_log_noargs(audit, msg) gr_log_varargs(audit, msg, GR_NOARGS)
79400+#define gr_log_int(audit, msg, num) gr_log_varargs(audit, msg, GR_ONE_INT, num)
79401+#define gr_log_int_str2(audit, msg, num, str1, str2) gr_log_varargs(audit, msg, GR_ONE_INT_TWO_STR, num, str1, str2)
79402+#define gr_log_str(audit, msg, str) gr_log_varargs(audit, msg, GR_ONE_STR, str)
79403+#define gr_log_str_int(audit, msg, str, num) gr_log_varargs(audit, msg, GR_STR_INT, str, num)
79404+#define gr_log_int_int(audit, msg, num1, num2) gr_log_varargs(audit, msg, GR_TWO_INT, num1, num2)
79405+#define gr_log_two_u64(audit, msg, num1, num2) gr_log_varargs(audit, msg, GR_TWO_U64, num1, num2)
79406+#define gr_log_int3(audit, msg, num1, num2, num3) gr_log_varargs(audit, msg, GR_THREE_INT, num1, num2, num3)
79407+#define gr_log_int5_str2(audit, msg, num1, num2, str1, str2) gr_log_varargs(audit, msg, GR_FIVE_INT_TWO_STR, num1, num2, str1, str2)
79408+#define gr_log_str_str(audit, msg, str1, str2) gr_log_varargs(audit, msg, GR_TWO_STR, str1, str2)
79409+#define gr_log_str2_int(audit, msg, str1, str2, num) gr_log_varargs(audit, msg, GR_TWO_STR_INT, str1, str2, num)
79410+#define gr_log_str3(audit, msg, str1, str2, str3) gr_log_varargs(audit, msg, GR_THREE_STR, str1, str2, str3)
79411+#define gr_log_str4(audit, msg, str1, str2, str3, str4) gr_log_varargs(audit, msg, GR_FOUR_STR, str1, str2, str3, str4)
79412+#define gr_log_str_fs(audit, msg, str, dentry, mnt) gr_log_varargs(audit, msg, GR_STR_FILENAME, str, dentry, mnt)
79413+#define gr_log_fs_str(audit, msg, dentry, mnt, str) gr_log_varargs(audit, msg, GR_FILENAME_STR, dentry, mnt, str)
79414+#define gr_log_fs_int2(audit, msg, dentry, mnt, num1, num2) gr_log_varargs(audit, msg, GR_FILENAME_TWO_INT, dentry, mnt, num1, num2)
79415+#define gr_log_fs_int2_str(audit, msg, dentry, mnt, num1, num2, str) gr_log_varargs(audit, msg, GR_FILENAME_TWO_INT_STR, dentry, mnt, num1, num2, str)
79416+#define gr_log_textrel_ulong_ulong(audit, msg, file, ulong1, ulong2) gr_log_varargs(audit, msg, GR_TEXTREL, file, ulong1, ulong2)
79417+#define gr_log_ptrace(audit, msg, task) gr_log_varargs(audit, msg, GR_PTRACE, task)
79418+#define gr_log_res_ulong2_str(audit, msg, task, ulong1, str, ulong2) gr_log_varargs(audit, msg, GR_RESOURCE, task, ulong1, str, ulong2)
79419+#define gr_log_cap(audit, msg, task, str) gr_log_varargs(audit, msg, GR_CAP, task, str)
79420+#define gr_log_sig_addr(audit, msg, str, addr) gr_log_varargs(audit, msg, GR_SIG, str, addr)
79421+#define gr_log_sig_task(audit, msg, task, num) gr_log_varargs(audit, msg, GR_SIG2, task, num)
79422+#define gr_log_crash1(audit, msg, task, ulong) gr_log_varargs(audit, msg, GR_CRASH1, task, ulong)
79423+#define gr_log_crash2(audit, msg, task, ulong1) gr_log_varargs(audit, msg, GR_CRASH2, task, ulong1)
79424+#define gr_log_procacct(audit, msg, task, num1, num2, num3, num4, num5, num6, num7, num8, num9) gr_log_varargs(audit, msg, GR_PSACCT, task, num1, num2, num3, num4, num5, num6, num7, num8, num9)
79425+#define gr_log_rwxmap(audit, msg, str) gr_log_varargs(audit, msg, GR_RWXMAP, str)
79426+#define gr_log_rwxmap_vma(audit, msg, str) gr_log_varargs(audit, msg, GR_RWXMAPVMA, str)
79427+
79428+void gr_log_varargs(int audit, const char *msg, int argtypes, ...);
79429+
79430+#endif
79431+
79432+#endif
79433diff --git a/include/linux/grmsg.h b/include/linux/grmsg.h
79434new file mode 100644
79435index 0000000..b02ba9d
79436--- /dev/null
79437+++ b/include/linux/grmsg.h
79438@@ -0,0 +1,117 @@
79439+#define DEFAULTSECMSG "%.256s[%.16s:%d] uid/euid:%u/%u gid/egid:%u/%u, parent %.256s[%.16s:%d] uid/euid:%u/%u gid/egid:%u/%u"
79440+#define GR_ACL_PROCACCT_MSG "%.256s[%.16s:%d] IP:%pI4 TTY:%.64s uid/euid:%u/%u gid/egid:%u/%u run time:[%ud %uh %um %us] cpu time:[%ud %uh %um %us] %s with exit code %ld, parent %.256s[%.16s:%d] IP:%pI4 TTY:%.64s uid/euid:%u/%u gid/egid:%u/%u"
79441+#define GR_PTRACE_ACL_MSG "denied ptrace of %.950s(%.16s:%d) by "
79442+#define GR_STOPMOD_MSG "denied modification of module state by "
79443+#define GR_ROFS_BLOCKWRITE_MSG "denied write to block device %.950s by "
79444+#define GR_ROFS_MOUNT_MSG "denied writable mount of %.950s by "
79445+#define GR_IOPERM_MSG "denied use of ioperm() by "
79446+#define GR_IOPL_MSG "denied use of iopl() by "
79447+#define GR_SHMAT_ACL_MSG "denied attach of shared memory of UID %u, PID %d, ID %u by "
79448+#define GR_UNIX_CHROOT_MSG "denied connect() to abstract AF_UNIX socket outside of chroot by "
79449+#define GR_SHMAT_CHROOT_MSG "denied attach of shared memory outside of chroot by "
79450+#define GR_MEM_READWRITE_MSG "denied access of range %Lx -> %Lx in /dev/mem by "
79451+#define GR_SYMLINK_MSG "not following symlink %.950s owned by %d.%d by "
79452+#define GR_LEARN_AUDIT_MSG "%s\t%u\t%u\t%u\t%.4095s\t%.4095s\t%lu\t%lu\t%.4095s\t%lu\t%pI4"
79453+#define GR_ID_LEARN_MSG "%s\t%u\t%u\t%u\t%.4095s\t%.4095s\t%c\t%d\t%d\t%d\t%pI4"
79454+#define GR_HIDDEN_ACL_MSG "%s access to hidden file %.950s by "
79455+#define GR_OPEN_ACL_MSG "%s open of %.950s for%s%s by "
79456+#define GR_CREATE_ACL_MSG "%s create of %.950s for%s%s by "
79457+#define GR_FIFO_MSG "denied writing FIFO %.950s of %d.%d by "
79458+#define GR_MKNOD_CHROOT_MSG "denied mknod of %.950s from chroot by "
79459+#define GR_MKNOD_ACL_MSG "%s mknod of %.950s by "
79460+#define GR_UNIXCONNECT_ACL_MSG "%s connect() to the unix domain socket %.950s by "
79461+#define GR_TTYSNIFF_ACL_MSG "terminal being sniffed by IP:%pI4 %.480s[%.16s:%d], parent %.480s[%.16s:%d] against "
79462+#define GR_MKDIR_ACL_MSG "%s mkdir of %.950s by "
79463+#define GR_RMDIR_ACL_MSG "%s rmdir of %.950s by "
79464+#define GR_UNLINK_ACL_MSG "%s unlink of %.950s by "
79465+#define GR_SYMLINK_ACL_MSG "%s symlink from %.480s to %.480s by "
79466+#define GR_HARDLINK_MSG "denied hardlink of %.930s (owned by %d.%d) to %.30s for "
79467+#define GR_LINK_ACL_MSG "%s link of %.480s to %.480s by "
79468+#define GR_INHERIT_ACL_MSG "successful inherit of %.480s's ACL for %.480s by "
79469+#define GR_RENAME_ACL_MSG "%s rename of %.480s to %.480s by "
79470+#define GR_UNSAFESHARE_EXEC_ACL_MSG "denied exec with cloned fs of %.950s by "
79471+#define GR_PTRACE_EXEC_ACL_MSG "denied ptrace of %.950s by "
79472+#define GR_EXEC_ACL_MSG "%s execution of %.950s by "
79473+#define GR_EXEC_TPE_MSG "denied untrusted exec (due to %.70s) of %.950s by "
79474+#define GR_SEGVSTART_ACL_MSG "possible exploit bruteforcing on " DEFAULTSECMSG " banning uid %u from login for %lu seconds"
79475+#define GR_SEGVNOSUID_ACL_MSG "possible exploit bruteforcing on " DEFAULTSECMSG " banning execution for %lu seconds"
79476+#define GR_MOUNT_CHROOT_MSG "denied mount of %.256s as %.930s from chroot by "
79477+#define GR_PIVOT_CHROOT_MSG "denied pivot_root from chroot by "
79478+#define GR_TRUNCATE_ACL_MSG "%s truncate of %.950s by "
79479+#define GR_ATIME_ACL_MSG "%s access time change of %.950s by "
79480+#define GR_ACCESS_ACL_MSG "%s access of %.950s for%s%s%s by "
79481+#define GR_CHROOT_CHROOT_MSG "denied double chroot to %.950s by "
79482+#define GR_CHMOD_CHROOT_MSG "denied chmod +s of %.950s by "
79483+#define GR_CHMOD_ACL_MSG "%s chmod of %.950s by "
79484+#define GR_CHROOT_FCHDIR_MSG "denied fchdir outside of chroot to %.950s by "
79485+#define GR_CHROOT_FHANDLE_MSG "denied use of file handles inside chroot by "
79486+#define GR_CHOWN_ACL_MSG "%s chown of %.950s by "
79487+#define GR_SETXATTR_ACL_MSG "%s setting extended attribute of %.950s by "
79488+#define GR_REMOVEXATTR_ACL_MSG "%s removing extended attribute of %.950s by "
79489+#define GR_WRITLIB_ACL_MSG "denied load of writable library %.950s by "
79490+#define GR_INITF_ACL_MSG "init_variables() failed %s by "
79491+#define GR_DISABLED_ACL_MSG "Error loading %s, trying to run kernel with acls disabled. To disable acls at startup use <kernel image name> gracl=off from your boot loader"
79492+#define GR_DEV_ACL_MSG "/dev/grsec: %d bytes sent %d required, being fed garbage by "
79493+#define GR_SHUTS_ACL_MSG "shutdown auth success for "
79494+#define GR_SHUTF_ACL_MSG "shutdown auth failure for "
79495+#define GR_SHUTI_ACL_MSG "ignoring shutdown for disabled RBAC system for "
79496+#define GR_SEGVMODS_ACL_MSG "segvmod auth success for "
79497+#define GR_SEGVMODF_ACL_MSG "segvmod auth failure for "
79498+#define GR_SEGVMODI_ACL_MSG "ignoring segvmod for disabled RBAC system for "
79499+#define GR_ENABLE_ACL_MSG "%s RBAC system loaded by "
79500+#define GR_ENABLEF_ACL_MSG "unable to load %s for "
79501+#define GR_RELOADI_ACL_MSG "ignoring reload request for disabled RBAC system"
79502+#define GR_RELOAD_ACL_MSG "%s RBAC system reloaded by "
79503+#define GR_RELOADF_ACL_MSG "failed reload of %s for "
79504+#define GR_SPROLEI_ACL_MSG "ignoring change to special role for disabled RBAC system for "
79505+#define GR_SPROLES_ACL_MSG "successful change to special role %s (id %d) by "
79506+#define GR_SPROLEL_ACL_MSG "special role %s (id %d) exited by "
79507+#define GR_SPROLEF_ACL_MSG "special role %s failure for "
79508+#define GR_UNSPROLEI_ACL_MSG "ignoring unauth of special role for disabled RBAC system for "
79509+#define GR_UNSPROLES_ACL_MSG "successful unauth of special role %s (id %d) by "
79510+#define GR_INVMODE_ACL_MSG "invalid mode %d by "
79511+#define GR_PRIORITY_CHROOT_MSG "denied priority change of process (%.16s:%d) by "
79512+#define GR_FAILFORK_MSG "failed fork with errno %s by "
79513+#define GR_NICE_CHROOT_MSG "denied priority change by "
79514+#define GR_UNISIGLOG_MSG "%.32s occurred at %p in "
79515+#define GR_DUALSIGLOG_MSG "signal %d sent to " DEFAULTSECMSG " by "
79516+#define GR_SIG_ACL_MSG "denied send of signal %d to protected task " DEFAULTSECMSG " by "
79517+#define GR_SYSCTL_MSG "denied modification of grsecurity sysctl value : %.32s by "
79518+#define GR_SYSCTL_ACL_MSG "%s sysctl of %.950s for%s%s by "
79519+#define GR_TIME_MSG "time set by "
79520+#define GR_DEFACL_MSG "fatal: unable to find subject for (%.16s:%d), loaded by "
79521+#define GR_MMAP_ACL_MSG "%s executable mmap of %.950s by "
79522+#define GR_MPROTECT_ACL_MSG "%s executable mprotect of %.950s by "
79523+#define GR_SOCK_MSG "denied socket(%.16s,%.16s,%.16s) by "
79524+#define GR_SOCK_NOINET_MSG "denied socket(%.16s,%.16s,%d) by "
79525+#define GR_BIND_MSG "denied bind() by "
79526+#define GR_CONNECT_MSG "denied connect() by "
79527+#define GR_BIND_ACL_MSG "denied bind() to %pI4 port %u sock type %.16s protocol %.16s by "
79528+#define GR_CONNECT_ACL_MSG "denied connect() to %pI4 port %u sock type %.16s protocol %.16s by "
79529+#define GR_IP_LEARN_MSG "%s\t%u\t%u\t%u\t%.4095s\t%.4095s\t%pI4\t%u\t%u\t%u\t%u\t%pI4"
79530+#define GR_EXEC_CHROOT_MSG "exec of %.980s within chroot by process "
79531+#define GR_CAP_ACL_MSG "use of %s denied for "
79532+#define GR_CAP_CHROOT_MSG "use of %s in chroot denied for "
79533+#define GR_CAP_ACL_MSG2 "use of %s permitted for "
79534+#define GR_USRCHANGE_ACL_MSG "change to uid %u denied for "
79535+#define GR_GRPCHANGE_ACL_MSG "change to gid %u denied for "
79536+#define GR_REMOUNT_AUDIT_MSG "remount of %.256s by "
79537+#define GR_UNMOUNT_AUDIT_MSG "unmount of %.256s by "
79538+#define GR_MOUNT_AUDIT_MSG "mount of %.256s to %.256s by "
79539+#define GR_CHDIR_AUDIT_MSG "chdir to %.980s by "
79540+#define GR_EXEC_AUDIT_MSG "exec of %.930s (%.128s) by "
79541+#define GR_RESOURCE_MSG "denied resource overstep by requesting %lu for %.16s against limit %lu for "
79542+#define GR_RWXMMAP_MSG "denied RWX mmap of %.950s by "
79543+#define GR_RWXMPROTECT_MSG "denied RWX mprotect of %.950s by "
79544+#define GR_TEXTREL_AUDIT_MSG "denied text relocation in %.950s, VMA:0x%08lx 0x%08lx by "
79545+#define GR_PTGNUSTACK_MSG "denied marking stack executable as requested by PT_GNU_STACK marking in %.950s by "
79546+#define GR_VM86_MSG "denied use of vm86 by "
79547+#define GR_PTRACE_AUDIT_MSG "process %.950s(%.16s:%d) attached to via ptrace by "
79548+#define GR_PTRACE_READEXEC_MSG "denied ptrace of unreadable binary %.950s by "
79549+#define GR_INIT_TRANSFER_MSG "persistent special role transferred privilege to init by "
79550+#define GR_BADPROCPID_MSG "denied read of sensitive /proc/pid/%s entry via fd passed across exec by "
79551+#define GR_SYMLINKOWNER_MSG "denied following symlink %.950s since symlink owner %u does not match target owner %u, by "
79552+#define GR_BRUTE_DAEMON_MSG "bruteforce prevention initiated for the next 30 minutes or until service restarted, stalling each fork 30 seconds. Please investigate the crash report for "
79553+#define GR_BRUTE_SUID_MSG "bruteforce prevention initiated due to crash of %.950s against uid %u, banning suid/sgid execs for %u minutes. Please investigate the crash report for "
79554+#define GR_IPC_DENIED_MSG "denied %s of overly-permissive IPC object with creator uid %u by "
79555+#define GR_MSRWRITE_MSG "denied write to CPU MSR by "
79556diff --git a/include/linux/grsecurity.h b/include/linux/grsecurity.h
79557new file mode 100644
79558index 0000000..13ac2e2
79559--- /dev/null
79560+++ b/include/linux/grsecurity.h
79561@@ -0,0 +1,249 @@
79562+#ifndef GR_SECURITY_H
79563+#define GR_SECURITY_H
79564+#include <linux/fs.h>
79565+#include <linux/fs_struct.h>
79566+#include <linux/binfmts.h>
79567+#include <linux/gracl.h>
79568+
79569+/* notify of brain-dead configs */
79570+#if defined(CONFIG_GRKERNSEC_PROC_USER) && defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
79571+#error "CONFIG_GRKERNSEC_PROC_USER and CONFIG_GRKERNSEC_PROC_USERGROUP cannot both be enabled."
79572+#endif
79573+#if defined(CONFIG_PAX_NOEXEC) && !defined(CONFIG_PAX_PAGEEXEC) && !defined(CONFIG_PAX_SEGMEXEC) && !defined(CONFIG_PAX_KERNEXEC)
79574+#error "CONFIG_PAX_NOEXEC enabled, but PAGEEXEC, SEGMEXEC, and KERNEXEC are disabled."
79575+#endif
79576+#if defined(CONFIG_PAX_ASLR) && !defined(CONFIG_PAX_RANDKSTACK) && !defined(CONFIG_PAX_RANDUSTACK) && !defined(CONFIG_PAX_RANDMMAP)
79577+#error "CONFIG_PAX_ASLR enabled, but RANDKSTACK, RANDUSTACK, and RANDMMAP are disabled."
79578+#endif
79579+#if defined(CONFIG_PAX) && !defined(CONFIG_PAX_NOEXEC) && !defined(CONFIG_PAX_ASLR)
79580+#error "CONFIG_PAX enabled, but no PaX options are enabled."
79581+#endif
79582+
79583+int gr_handle_new_usb(void);
79584+
79585+void gr_handle_brute_attach(int dumpable);
79586+void gr_handle_brute_check(void);
79587+void gr_handle_kernel_exploit(void);
79588+
79589+char gr_roletype_to_char(void);
79590+
79591+int gr_proc_is_restricted(void);
79592+
79593+int gr_acl_enable_at_secure(void);
79594+
79595+int gr_check_user_change(kuid_t real, kuid_t effective, kuid_t fs);
79596+int gr_check_group_change(kgid_t real, kgid_t effective, kgid_t fs);
79597+
79598+void gr_del_task_from_ip_table(struct task_struct *p);
79599+
79600+int gr_pid_is_chrooted(struct task_struct *p);
79601+int gr_handle_chroot_fowner(struct pid *pid, enum pid_type type);
79602+int gr_handle_chroot_nice(void);
79603+int gr_handle_chroot_sysctl(const int op);
79604+int gr_handle_chroot_setpriority(struct task_struct *p,
79605+ const int niceval);
79606+int gr_chroot_fchdir(struct dentry *u_dentry, struct vfsmount *u_mnt);
79607+int gr_chroot_fhandle(void);
79608+int gr_handle_chroot_chroot(const struct dentry *dentry,
79609+ const struct vfsmount *mnt);
79610+void gr_handle_chroot_chdir(const struct path *path);
79611+int gr_handle_chroot_chmod(const struct dentry *dentry,
79612+ const struct vfsmount *mnt, const int mode);
79613+int gr_handle_chroot_mknod(const struct dentry *dentry,
79614+ const struct vfsmount *mnt, const int mode);
79615+int gr_handle_chroot_mount(const struct dentry *dentry,
79616+ const struct vfsmount *mnt,
79617+ const char *dev_name);
79618+int gr_handle_chroot_pivot(void);
79619+int gr_handle_chroot_unix(const pid_t pid);
79620+
79621+int gr_handle_rawio(const struct inode *inode);
79622+
79623+void gr_handle_ioperm(void);
79624+void gr_handle_iopl(void);
79625+void gr_handle_msr_write(void);
79626+
79627+umode_t gr_acl_umask(void);
79628+
79629+int gr_tpe_allow(const struct file *file);
79630+
79631+void gr_set_chroot_entries(struct task_struct *task, const struct path *path);
79632+void gr_clear_chroot_entries(struct task_struct *task);
79633+
79634+void gr_log_forkfail(const int retval);
79635+void gr_log_timechange(void);
79636+void gr_log_signal(const int sig, const void *addr, const struct task_struct *t);
79637+void gr_log_chdir(const struct dentry *dentry,
79638+ const struct vfsmount *mnt);
79639+void gr_log_chroot_exec(const struct dentry *dentry,
79640+ const struct vfsmount *mnt);
79641+void gr_log_remount(const char *devname, const int retval);
79642+void gr_log_unmount(const char *devname, const int retval);
79643+void gr_log_mount(const char *from, const char *to, const int retval);
79644+void gr_log_textrel(struct vm_area_struct *vma);
79645+void gr_log_ptgnustack(struct file *file);
79646+void gr_log_rwxmmap(struct file *file);
79647+void gr_log_rwxmprotect(struct vm_area_struct *vma);
79648+
79649+int gr_handle_follow_link(const struct inode *parent,
79650+ const struct inode *inode,
79651+ const struct dentry *dentry,
79652+ const struct vfsmount *mnt);
79653+int gr_handle_fifo(const struct dentry *dentry,
79654+ const struct vfsmount *mnt,
79655+ const struct dentry *dir, const int flag,
79656+ const int acc_mode);
79657+int gr_handle_hardlink(const struct dentry *dentry,
79658+ const struct vfsmount *mnt,
79659+ struct inode *inode,
79660+ const int mode, const struct filename *to);
79661+
79662+int gr_is_capable(const int cap);
79663+int gr_is_capable_nolog(const int cap);
79664+int gr_task_is_capable(const struct task_struct *task, const struct cred *cred, const int cap);
79665+int gr_task_is_capable_nolog(const struct task_struct *task, const int cap);
79666+
79667+void gr_copy_label(struct task_struct *tsk);
79668+void gr_handle_crash(struct task_struct *task, const int sig);
79669+int gr_handle_signal(const struct task_struct *p, const int sig);
79670+int gr_check_crash_uid(const kuid_t uid);
79671+int gr_check_protected_task(const struct task_struct *task);
79672+int gr_check_protected_task_fowner(struct pid *pid, enum pid_type type);
79673+int gr_acl_handle_mmap(const struct file *file,
79674+ const unsigned long prot);
79675+int gr_acl_handle_mprotect(const struct file *file,
79676+ const unsigned long prot);
79677+int gr_check_hidden_task(const struct task_struct *tsk);
79678+__u32 gr_acl_handle_truncate(const struct dentry *dentry,
79679+ const struct vfsmount *mnt);
79680+__u32 gr_acl_handle_utime(const struct dentry *dentry,
79681+ const struct vfsmount *mnt);
79682+__u32 gr_acl_handle_access(const struct dentry *dentry,
79683+ const struct vfsmount *mnt, const int fmode);
79684+__u32 gr_acl_handle_chmod(const struct dentry *dentry,
79685+ const struct vfsmount *mnt, umode_t *mode);
79686+__u32 gr_acl_handle_chown(const struct dentry *dentry,
79687+ const struct vfsmount *mnt);
79688+__u32 gr_acl_handle_setxattr(const struct dentry *dentry,
79689+ const struct vfsmount *mnt);
79690+__u32 gr_acl_handle_removexattr(const struct dentry *dentry,
79691+ const struct vfsmount *mnt);
79692+int gr_handle_ptrace(struct task_struct *task, const long request);
79693+int gr_handle_proc_ptrace(struct task_struct *task);
79694+__u32 gr_acl_handle_execve(const struct dentry *dentry,
79695+ const struct vfsmount *mnt);
79696+int gr_check_crash_exec(const struct file *filp);
79697+int gr_acl_is_enabled(void);
79698+void gr_set_role_label(struct task_struct *task, const kuid_t uid,
79699+ const kgid_t gid);
79700+int gr_set_proc_label(const struct dentry *dentry,
79701+ const struct vfsmount *mnt,
79702+ const int unsafe_flags);
79703+__u32 gr_acl_handle_hidden_file(const struct dentry *dentry,
79704+ const struct vfsmount *mnt);
79705+__u32 gr_acl_handle_open(const struct dentry *dentry,
79706+ const struct vfsmount *mnt, int acc_mode);
79707+__u32 gr_acl_handle_creat(const struct dentry *dentry,
79708+ const struct dentry *p_dentry,
79709+ const struct vfsmount *p_mnt,
79710+ int open_flags, int acc_mode, const int imode);
79711+void gr_handle_create(const struct dentry *dentry,
79712+ const struct vfsmount *mnt);
79713+void gr_handle_proc_create(const struct dentry *dentry,
79714+ const struct inode *inode);
79715+__u32 gr_acl_handle_mknod(const struct dentry *new_dentry,
79716+ const struct dentry *parent_dentry,
79717+ const struct vfsmount *parent_mnt,
79718+ const int mode);
79719+__u32 gr_acl_handle_mkdir(const struct dentry *new_dentry,
79720+ const struct dentry *parent_dentry,
79721+ const struct vfsmount *parent_mnt);
79722+__u32 gr_acl_handle_rmdir(const struct dentry *dentry,
79723+ const struct vfsmount *mnt);
79724+void gr_handle_delete(const ino_t ino, const dev_t dev);
79725+__u32 gr_acl_handle_unlink(const struct dentry *dentry,
79726+ const struct vfsmount *mnt);
79727+__u32 gr_acl_handle_symlink(const struct dentry *new_dentry,
79728+ const struct dentry *parent_dentry,
79729+ const struct vfsmount *parent_mnt,
79730+ const struct filename *from);
79731+__u32 gr_acl_handle_link(const struct dentry *new_dentry,
79732+ const struct dentry *parent_dentry,
79733+ const struct vfsmount *parent_mnt,
79734+ const struct dentry *old_dentry,
79735+ const struct vfsmount *old_mnt, const struct filename *to);
79736+int gr_handle_symlink_owner(const struct path *link, const struct inode *target);
79737+int gr_acl_handle_rename(struct dentry *new_dentry,
79738+ struct dentry *parent_dentry,
79739+ const struct vfsmount *parent_mnt,
79740+ struct dentry *old_dentry,
79741+ struct inode *old_parent_inode,
79742+ struct vfsmount *old_mnt, const struct filename *newname, unsigned int flags);
79743+void gr_handle_rename(struct inode *old_dir, struct inode *new_dir,
79744+ struct dentry *old_dentry,
79745+ struct dentry *new_dentry,
79746+ struct vfsmount *mnt, const __u8 replace, unsigned int flags);
79747+__u32 gr_check_link(const struct dentry *new_dentry,
79748+ const struct dentry *parent_dentry,
79749+ const struct vfsmount *parent_mnt,
79750+ const struct dentry *old_dentry,
79751+ const struct vfsmount *old_mnt);
79752+int gr_acl_handle_filldir(const struct file *file, const char *name,
79753+ const unsigned int namelen, const ino_t ino);
79754+
79755+__u32 gr_acl_handle_unix(const struct dentry *dentry,
79756+ const struct vfsmount *mnt);
79757+void gr_acl_handle_exit(void);
79758+void gr_acl_handle_psacct(struct task_struct *task, const long code);
79759+int gr_acl_handle_procpidmem(const struct task_struct *task);
79760+int gr_handle_rofs_mount(struct dentry *dentry, struct vfsmount *mnt, int mnt_flags);
79761+int gr_handle_rofs_blockwrite(struct dentry *dentry, struct vfsmount *mnt, int acc_mode);
79762+void gr_audit_ptrace(struct task_struct *task);
79763+dev_t gr_get_dev_from_dentry(struct dentry *dentry);
79764+void gr_put_exec_file(struct task_struct *task);
79765+
79766+int gr_ptrace_readexec(struct file *file, int unsafe_flags);
79767+
79768+#if defined(CONFIG_GRKERNSEC) && (defined(CONFIG_GRKERNSEC_RESLOG) || !defined(CONFIG_GRKERNSEC_NO_RBAC))
79769+extern void gr_learn_resource(const struct task_struct *task, const int res,
79770+ const unsigned long wanted, const int gt);
79771+#else
79772+static inline void gr_learn_resource(const struct task_struct *task, const int res,
79773+ const unsigned long wanted, const int gt)
79774+{
79775+}
79776+#endif
79777+
79778+#ifdef CONFIG_GRKERNSEC_RESLOG
79779+extern void gr_log_resource(const struct task_struct *task, const int res,
79780+ const unsigned long wanted, const int gt);
79781+#else
79782+static inline void gr_log_resource(const struct task_struct *task, const int res,
79783+ const unsigned long wanted, const int gt)
79784+{
79785+}
79786+#endif
79787+
79788+#ifdef CONFIG_GRKERNSEC
79789+void task_grsec_rbac(struct seq_file *m, struct task_struct *p);
79790+void gr_handle_vm86(void);
79791+void gr_handle_mem_readwrite(u64 from, u64 to);
79792+
79793+void gr_log_badprocpid(const char *entry);
79794+
79795+extern int grsec_enable_dmesg;
79796+extern int grsec_disable_privio;
79797+
79798+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
79799+extern kgid_t grsec_proc_gid;
79800+#endif
79801+
79802+#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK
79803+extern int grsec_enable_chroot_findtask;
79804+#endif
79805+#ifdef CONFIG_GRKERNSEC_SETXID
79806+extern int grsec_enable_setxid;
79807+#endif
79808+#endif
79809+
79810+#endif
79811diff --git a/include/linux/grsock.h b/include/linux/grsock.h
79812new file mode 100644
79813index 0000000..e7ffaaf
79814--- /dev/null
79815+++ b/include/linux/grsock.h
79816@@ -0,0 +1,19 @@
79817+#ifndef __GRSOCK_H
79818+#define __GRSOCK_H
79819+
79820+extern void gr_attach_curr_ip(const struct sock *sk);
79821+extern int gr_handle_sock_all(const int family, const int type,
79822+ const int protocol);
79823+extern int gr_handle_sock_server(const struct sockaddr *sck);
79824+extern int gr_handle_sock_server_other(const struct sock *sck);
79825+extern int gr_handle_sock_client(const struct sockaddr *sck);
79826+extern int gr_search_connect(struct socket * sock,
79827+ struct sockaddr_in * addr);
79828+extern int gr_search_bind(struct socket * sock,
79829+ struct sockaddr_in * addr);
79830+extern int gr_search_listen(struct socket * sock);
79831+extern int gr_search_accept(struct socket * sock);
79832+extern int gr_search_socket(const int domain, const int type,
79833+ const int protocol);
79834+
79835+#endif
79836diff --git a/include/linux/hash.h b/include/linux/hash.h
79837index bd1754c..8240892 100644
79838--- a/include/linux/hash.h
79839+++ b/include/linux/hash.h
79840@@ -83,7 +83,7 @@ static inline u32 hash32_ptr(const void *ptr)
79841 struct fast_hash_ops {
79842 u32 (*hash)(const void *data, u32 len, u32 seed);
79843 u32 (*hash2)(const u32 *data, u32 len, u32 seed);
79844-};
79845+} __no_const;
79846
79847 /**
79848 * arch_fast_hash - Caclulates a hash over a given buffer that can have
79849diff --git a/include/linux/highmem.h b/include/linux/highmem.h
79850index 7fb31da..08b5114 100644
79851--- a/include/linux/highmem.h
79852+++ b/include/linux/highmem.h
79853@@ -189,6 +189,18 @@ static inline void clear_highpage(struct page *page)
79854 kunmap_atomic(kaddr);
79855 }
79856
79857+static inline void sanitize_highpage(struct page *page)
79858+{
79859+ void *kaddr;
79860+ unsigned long flags;
79861+
79862+ local_irq_save(flags);
79863+ kaddr = kmap_atomic(page);
79864+ clear_page(kaddr);
79865+ kunmap_atomic(kaddr);
79866+ local_irq_restore(flags);
79867+}
79868+
79869 static inline void zero_user_segments(struct page *page,
79870 unsigned start1, unsigned end1,
79871 unsigned start2, unsigned end2)
79872diff --git a/include/linux/hwmon-sysfs.h b/include/linux/hwmon-sysfs.h
79873index 1c7b89a..7dda400 100644
79874--- a/include/linux/hwmon-sysfs.h
79875+++ b/include/linux/hwmon-sysfs.h
79876@@ -25,7 +25,8 @@
79877 struct sensor_device_attribute{
79878 struct device_attribute dev_attr;
79879 int index;
79880-};
79881+} __do_const;
79882+typedef struct sensor_device_attribute __no_const sensor_device_attribute_no_const;
79883 #define to_sensor_dev_attr(_dev_attr) \
79884 container_of(_dev_attr, struct sensor_device_attribute, dev_attr)
79885
79886@@ -41,7 +42,8 @@ struct sensor_device_attribute_2 {
79887 struct device_attribute dev_attr;
79888 u8 index;
79889 u8 nr;
79890-};
79891+} __do_const;
79892+typedef struct sensor_device_attribute_2 __no_const sensor_device_attribute_2_no_const;
79893 #define to_sensor_dev_attr_2(_dev_attr) \
79894 container_of(_dev_attr, struct sensor_device_attribute_2, dev_attr)
79895
79896diff --git a/include/linux/i2c.h b/include/linux/i2c.h
79897index b556e0a..c10a515 100644
79898--- a/include/linux/i2c.h
79899+++ b/include/linux/i2c.h
79900@@ -378,6 +378,7 @@ struct i2c_algorithm {
79901 /* To determine what the adapter supports */
79902 u32 (*functionality) (struct i2c_adapter *);
79903 };
79904+typedef struct i2c_algorithm __no_const i2c_algorithm_no_const;
79905
79906 /**
79907 * struct i2c_bus_recovery_info - I2C bus recovery information
79908diff --git a/include/linux/i2o.h b/include/linux/i2o.h
79909index d23c3c2..eb63c81 100644
79910--- a/include/linux/i2o.h
79911+++ b/include/linux/i2o.h
79912@@ -565,7 +565,7 @@ struct i2o_controller {
79913 struct i2o_device *exec; /* Executive */
79914 #if BITS_PER_LONG == 64
79915 spinlock_t context_list_lock; /* lock for context_list */
79916- atomic_t context_list_counter; /* needed for unique contexts */
79917+ atomic_unchecked_t context_list_counter; /* needed for unique contexts */
79918 struct list_head context_list; /* list of context id's
79919 and pointers */
79920 #endif
79921diff --git a/include/linux/if_pppox.h b/include/linux/if_pppox.h
79922index aff7ad8..3942bbd 100644
79923--- a/include/linux/if_pppox.h
79924+++ b/include/linux/if_pppox.h
79925@@ -76,7 +76,7 @@ struct pppox_proto {
79926 int (*ioctl)(struct socket *sock, unsigned int cmd,
79927 unsigned long arg);
79928 struct module *owner;
79929-};
79930+} __do_const;
79931
79932 extern int register_pppox_proto(int proto_num, const struct pppox_proto *pp);
79933 extern void unregister_pppox_proto(int proto_num);
79934diff --git a/include/linux/init.h b/include/linux/init.h
79935index a3ba270..a1b6604 100644
79936--- a/include/linux/init.h
79937+++ b/include/linux/init.h
79938@@ -37,9 +37,17 @@
79939 * section.
79940 */
79941
79942+#define add_init_latent_entropy __latent_entropy
79943+
79944+#ifdef CONFIG_MEMORY_HOTPLUG
79945+#define add_meminit_latent_entropy
79946+#else
79947+#define add_meminit_latent_entropy __latent_entropy
79948+#endif
79949+
79950 /* These are for everybody (although not all archs will actually
79951 discard it in modules) */
79952-#define __init __section(.init.text) __cold notrace
79953+#define __init __section(.init.text) __cold notrace add_init_latent_entropy
79954 #define __initdata __section(.init.data)
79955 #define __initconst __constsection(.init.rodata)
79956 #define __exitdata __section(.exit.data)
79957@@ -100,7 +108,7 @@
79958 #define __cpuexitconst
79959
79960 /* Used for MEMORY_HOTPLUG */
79961-#define __meminit __section(.meminit.text) __cold notrace
79962+#define __meminit __section(.meminit.text) __cold notrace add_meminit_latent_entropy
79963 #define __meminitdata __section(.meminit.data)
79964 #define __meminitconst __constsection(.meminit.rodata)
79965 #define __memexit __section(.memexit.text) __exitused __cold notrace
79966diff --git a/include/linux/init_task.h b/include/linux/init_task.h
79967index 6df7f9f..d0bf699 100644
79968--- a/include/linux/init_task.h
79969+++ b/include/linux/init_task.h
79970@@ -156,6 +156,12 @@ extern struct task_group root_task_group;
79971
79972 #define INIT_TASK_COMM "swapper"
79973
79974+#ifdef CONFIG_X86
79975+#define INIT_TASK_THREAD_INFO .tinfo = INIT_THREAD_INFO,
79976+#else
79977+#define INIT_TASK_THREAD_INFO
79978+#endif
79979+
79980 #ifdef CONFIG_RT_MUTEXES
79981 # define INIT_RT_MUTEXES(tsk) \
79982 .pi_waiters = RB_ROOT, \
79983@@ -203,6 +209,7 @@ extern struct task_group root_task_group;
79984 RCU_POINTER_INITIALIZER(cred, &init_cred), \
79985 .comm = INIT_TASK_COMM, \
79986 .thread = INIT_THREAD, \
79987+ INIT_TASK_THREAD_INFO \
79988 .fs = &init_fs, \
79989 .files = &init_files, \
79990 .signal = &init_signals, \
79991diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
79992index 051c850..431f83a 100644
79993--- a/include/linux/interrupt.h
79994+++ b/include/linux/interrupt.h
79995@@ -412,8 +412,8 @@ extern const char * const softirq_to_name[NR_SOFTIRQS];
79996
79997 struct softirq_action
79998 {
79999- void (*action)(struct softirq_action *);
80000-};
80001+ void (*action)(void);
80002+} __no_const;
80003
80004 asmlinkage void do_softirq(void);
80005 asmlinkage void __do_softirq(void);
80006@@ -427,7 +427,7 @@ static inline void do_softirq_own_stack(void)
80007 }
80008 #endif
80009
80010-extern void open_softirq(int nr, void (*action)(struct softirq_action *));
80011+extern void open_softirq(int nr, void (*action)(void));
80012 extern void softirq_init(void);
80013 extern void __raise_softirq_irqoff(unsigned int nr);
80014
80015diff --git a/include/linux/iommu.h b/include/linux/iommu.h
80016index b96a5b2..2732d1c 100644
80017--- a/include/linux/iommu.h
80018+++ b/include/linux/iommu.h
80019@@ -131,7 +131,7 @@ struct iommu_ops {
80020 u32 (*domain_get_windows)(struct iommu_domain *domain);
80021
80022 unsigned long pgsize_bitmap;
80023-};
80024+} __do_const;
80025
80026 #define IOMMU_GROUP_NOTIFY_ADD_DEVICE 1 /* Device added */
80027 #define IOMMU_GROUP_NOTIFY_DEL_DEVICE 2 /* Pre Device removed */
80028diff --git a/include/linux/ioport.h b/include/linux/ioport.h
80029index 5e3a906..3131d0f 100644
80030--- a/include/linux/ioport.h
80031+++ b/include/linux/ioport.h
80032@@ -161,7 +161,7 @@ struct resource *lookup_resource(struct resource *root, resource_size_t start);
80033 int adjust_resource(struct resource *res, resource_size_t start,
80034 resource_size_t size);
80035 resource_size_t resource_alignment(struct resource *res);
80036-static inline resource_size_t resource_size(const struct resource *res)
80037+static inline resource_size_t __intentional_overflow(-1) resource_size(const struct resource *res)
80038 {
80039 return res->end - res->start + 1;
80040 }
80041diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
80042index 35e7eca..6afb7ad 100644
80043--- a/include/linux/ipc_namespace.h
80044+++ b/include/linux/ipc_namespace.h
80045@@ -69,7 +69,7 @@ struct ipc_namespace {
80046 struct user_namespace *user_ns;
80047
80048 unsigned int proc_inum;
80049-};
80050+} __randomize_layout;
80051
80052 extern struct ipc_namespace init_ipc_ns;
80053 extern atomic_t nr_ipc_ns;
80054diff --git a/include/linux/irq.h b/include/linux/irq.h
80055index 5c57efb..965a62b 100644
80056--- a/include/linux/irq.h
80057+++ b/include/linux/irq.h
80058@@ -344,7 +344,8 @@ struct irq_chip {
80059 void (*irq_release_resources)(struct irq_data *data);
80060
80061 unsigned long flags;
80062-};
80063+} __do_const;
80064+typedef struct irq_chip __no_const irq_chip_no_const;
80065
80066 /*
80067 * irq_chip specific flags
80068diff --git a/include/linux/irqchip/arm-gic.h b/include/linux/irqchip/arm-gic.h
80069index 7ed92d0..589abf5 100644
80070--- a/include/linux/irqchip/arm-gic.h
80071+++ b/include/linux/irqchip/arm-gic.h
80072@@ -73,9 +73,11 @@
80073
80074 #ifndef __ASSEMBLY__
80075
80076+#include <linux/irq.h>
80077+
80078 struct device_node;
80079
80080-extern struct irq_chip gic_arch_extn;
80081+extern irq_chip_no_const gic_arch_extn;
80082
80083 void gic_init_bases(unsigned int, int, void __iomem *, void __iomem *,
80084 u32 offset, struct device_node *);
80085diff --git a/include/linux/jiffies.h b/include/linux/jiffies.h
80086index 1f44466..b481806 100644
80087--- a/include/linux/jiffies.h
80088+++ b/include/linux/jiffies.h
80089@@ -292,20 +292,20 @@ extern unsigned long preset_lpj;
80090 /*
80091 * Convert various time units to each other:
80092 */
80093-extern unsigned int jiffies_to_msecs(const unsigned long j);
80094-extern unsigned int jiffies_to_usecs(const unsigned long j);
80095+extern unsigned int jiffies_to_msecs(const unsigned long j) __intentional_overflow(-1);
80096+extern unsigned int jiffies_to_usecs(const unsigned long j) __intentional_overflow(-1);
80097
80098-static inline u64 jiffies_to_nsecs(const unsigned long j)
80099+static inline u64 __intentional_overflow(-1) jiffies_to_nsecs(const unsigned long j)
80100 {
80101 return (u64)jiffies_to_usecs(j) * NSEC_PER_USEC;
80102 }
80103
80104-extern unsigned long msecs_to_jiffies(const unsigned int m);
80105-extern unsigned long usecs_to_jiffies(const unsigned int u);
80106+extern unsigned long msecs_to_jiffies(const unsigned int m) __intentional_overflow(-1);
80107+extern unsigned long usecs_to_jiffies(const unsigned int u) __intentional_overflow(-1);
80108 extern unsigned long timespec_to_jiffies(const struct timespec *value);
80109 extern void jiffies_to_timespec(const unsigned long jiffies,
80110- struct timespec *value);
80111-extern unsigned long timeval_to_jiffies(const struct timeval *value);
80112+ struct timespec *value) __intentional_overflow(-1);
80113+extern unsigned long timeval_to_jiffies(const struct timeval *value) __intentional_overflow(-1);
80114 extern void jiffies_to_timeval(const unsigned long jiffies,
80115 struct timeval *value);
80116
80117diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h
80118index 6883e19..e854fcb 100644
80119--- a/include/linux/kallsyms.h
80120+++ b/include/linux/kallsyms.h
80121@@ -15,7 +15,8 @@
80122
80123 struct module;
80124
80125-#ifdef CONFIG_KALLSYMS
80126+#if !defined(__INCLUDED_BY_HIDESYM) || !defined(CONFIG_KALLSYMS)
80127+#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM)
80128 /* Lookup the address for a symbol. Returns 0 if not found. */
80129 unsigned long kallsyms_lookup_name(const char *name);
80130
80131@@ -106,6 +107,21 @@ static inline int lookup_symbol_attrs(unsigned long addr, unsigned long *size, u
80132 /* Stupid that this does nothing, but I didn't create this mess. */
80133 #define __print_symbol(fmt, addr)
80134 #endif /*CONFIG_KALLSYMS*/
80135+#else /* when included by kallsyms.c, vsnprintf.c, kprobes.c, or
80136+ arch/x86/kernel/dumpstack.c, with HIDESYM enabled */
80137+extern unsigned long kallsyms_lookup_name(const char *name);
80138+extern void __print_symbol(const char *fmt, unsigned long address);
80139+extern int sprint_backtrace(char *buffer, unsigned long address);
80140+extern int sprint_symbol(char *buffer, unsigned long address);
80141+extern int sprint_symbol_no_offset(char *buffer, unsigned long address);
80142+const char *kallsyms_lookup(unsigned long addr,
80143+ unsigned long *symbolsize,
80144+ unsigned long *offset,
80145+ char **modname, char *namebuf);
80146+extern int kallsyms_lookup_size_offset(unsigned long addr,
80147+ unsigned long *symbolsize,
80148+ unsigned long *offset);
80149+#endif
80150
80151 /* This macro allows us to keep printk typechecking */
80152 static __printf(1, 2)
80153diff --git a/include/linux/key-type.h b/include/linux/key-type.h
80154index a74c3a8..28d3f21 100644
80155--- a/include/linux/key-type.h
80156+++ b/include/linux/key-type.h
80157@@ -131,7 +131,7 @@ struct key_type {
80158 /* internal fields */
80159 struct list_head link; /* link in types list */
80160 struct lock_class_key lock_class; /* key->sem lock class */
80161-};
80162+} __do_const;
80163
80164 extern struct key_type key_type_keyring;
80165
80166diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h
80167index 6b06d37..c134867 100644
80168--- a/include/linux/kgdb.h
80169+++ b/include/linux/kgdb.h
80170@@ -52,7 +52,7 @@ extern int kgdb_connected;
80171 extern int kgdb_io_module_registered;
80172
80173 extern atomic_t kgdb_setting_breakpoint;
80174-extern atomic_t kgdb_cpu_doing_single_step;
80175+extern atomic_unchecked_t kgdb_cpu_doing_single_step;
80176
80177 extern struct task_struct *kgdb_usethread;
80178 extern struct task_struct *kgdb_contthread;
80179@@ -254,7 +254,7 @@ struct kgdb_arch {
80180 void (*correct_hw_break)(void);
80181
80182 void (*enable_nmi)(bool on);
80183-};
80184+} __do_const;
80185
80186 /**
80187 * struct kgdb_io - Describe the interface for an I/O driver to talk with KGDB.
80188@@ -279,7 +279,7 @@ struct kgdb_io {
80189 void (*pre_exception) (void);
80190 void (*post_exception) (void);
80191 int is_console;
80192-};
80193+} __do_const;
80194
80195 extern struct kgdb_arch arch_kgdb_ops;
80196
80197diff --git a/include/linux/kmod.h b/include/linux/kmod.h
80198index 0555cc6..40116ce 100644
80199--- a/include/linux/kmod.h
80200+++ b/include/linux/kmod.h
80201@@ -34,6 +34,8 @@ extern char modprobe_path[]; /* for sysctl */
80202 * usually useless though. */
80203 extern __printf(2, 3)
80204 int __request_module(bool wait, const char *name, ...);
80205+extern __printf(3, 4)
80206+int ___request_module(bool wait, char *param_name, const char *name, ...);
80207 #define request_module(mod...) __request_module(true, mod)
80208 #define request_module_nowait(mod...) __request_module(false, mod)
80209 #define try_then_request_module(x, mod...) \
80210@@ -57,6 +59,9 @@ struct subprocess_info {
80211 struct work_struct work;
80212 struct completion *complete;
80213 char *path;
80214+#ifdef CONFIG_GRKERNSEC
80215+ char *origpath;
80216+#endif
80217 char **argv;
80218 char **envp;
80219 int wait;
80220diff --git a/include/linux/kobject.h b/include/linux/kobject.h
80221index f896a33..f2eb10f 100644
80222--- a/include/linux/kobject.h
80223+++ b/include/linux/kobject.h
80224@@ -116,7 +116,7 @@ struct kobj_type {
80225 struct attribute **default_attrs;
80226 const struct kobj_ns_type_operations *(*child_ns_type)(struct kobject *kobj);
80227 const void *(*namespace)(struct kobject *kobj);
80228-};
80229+} __do_const;
80230
80231 struct kobj_uevent_env {
80232 char *argv[3];
80233@@ -140,6 +140,7 @@ struct kobj_attribute {
80234 ssize_t (*store)(struct kobject *kobj, struct kobj_attribute *attr,
80235 const char *buf, size_t count);
80236 };
80237+typedef struct kobj_attribute __no_const kobj_attribute_no_const;
80238
80239 extern const struct sysfs_ops kobj_sysfs_ops;
80240
80241@@ -167,7 +168,7 @@ struct kset {
80242 spinlock_t list_lock;
80243 struct kobject kobj;
80244 const struct kset_uevent_ops *uevent_ops;
80245-};
80246+} __randomize_layout;
80247
80248 extern void kset_init(struct kset *kset);
80249 extern int __must_check kset_register(struct kset *kset);
80250diff --git a/include/linux/kobject_ns.h b/include/linux/kobject_ns.h
80251index df32d25..fb52e27 100644
80252--- a/include/linux/kobject_ns.h
80253+++ b/include/linux/kobject_ns.h
80254@@ -44,7 +44,7 @@ struct kobj_ns_type_operations {
80255 const void *(*netlink_ns)(struct sock *sk);
80256 const void *(*initial_ns)(void);
80257 void (*drop_ns)(void *);
80258-};
80259+} __do_const;
80260
80261 int kobj_ns_type_register(const struct kobj_ns_type_operations *ops);
80262 int kobj_ns_type_registered(enum kobj_ns_type type);
80263diff --git a/include/linux/kref.h b/include/linux/kref.h
80264index 484604d..0f6c5b6 100644
80265--- a/include/linux/kref.h
80266+++ b/include/linux/kref.h
80267@@ -68,7 +68,7 @@ static inline void kref_get(struct kref *kref)
80268 static inline int kref_sub(struct kref *kref, unsigned int count,
80269 void (*release)(struct kref *kref))
80270 {
80271- WARN_ON(release == NULL);
80272+ BUG_ON(release == NULL);
80273
80274 if (atomic_sub_and_test((int) count, &kref->refcount)) {
80275 release(kref);
80276diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
80277index 7d21cf9..bc0c81f 100644
80278--- a/include/linux/kvm_host.h
80279+++ b/include/linux/kvm_host.h
80280@@ -466,7 +466,7 @@ static inline void kvm_irqfd_exit(void)
80281 {
80282 }
80283 #endif
80284-int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
80285+int kvm_init(const void *opaque, unsigned vcpu_size, unsigned vcpu_align,
80286 struct module *module);
80287 void kvm_exit(void);
80288
80289@@ -632,7 +632,7 @@ int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
80290 struct kvm_guest_debug *dbg);
80291 int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run);
80292
80293-int kvm_arch_init(void *opaque);
80294+int kvm_arch_init(const void *opaque);
80295 void kvm_arch_exit(void);
80296
80297 int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
80298diff --git a/include/linux/libata.h b/include/linux/libata.h
80299index 5ab4e3a..2fe237b 100644
80300--- a/include/linux/libata.h
80301+++ b/include/linux/libata.h
80302@@ -975,7 +975,7 @@ struct ata_port_operations {
80303 * fields must be pointers.
80304 */
80305 const struct ata_port_operations *inherits;
80306-};
80307+} __do_const;
80308
80309 struct ata_port_info {
80310 unsigned long flags;
80311diff --git a/include/linux/linkage.h b/include/linux/linkage.h
80312index a6a42dd..6c5ebce 100644
80313--- a/include/linux/linkage.h
80314+++ b/include/linux/linkage.h
80315@@ -36,6 +36,7 @@
80316 #endif
80317
80318 #define __page_aligned_data __section(.data..page_aligned) __aligned(PAGE_SIZE)
80319+#define __page_aligned_rodata __read_only __aligned(PAGE_SIZE)
80320 #define __page_aligned_bss __section(.bss..page_aligned) __aligned(PAGE_SIZE)
80321
80322 /*
80323diff --git a/include/linux/list.h b/include/linux/list.h
80324index ef95941..82db65a 100644
80325--- a/include/linux/list.h
80326+++ b/include/linux/list.h
80327@@ -112,6 +112,19 @@ extern void __list_del_entry(struct list_head *entry);
80328 extern void list_del(struct list_head *entry);
80329 #endif
80330
80331+extern void __pax_list_add(struct list_head *new,
80332+ struct list_head *prev,
80333+ struct list_head *next);
80334+static inline void pax_list_add(struct list_head *new, struct list_head *head)
80335+{
80336+ __pax_list_add(new, head, head->next);
80337+}
80338+static inline void pax_list_add_tail(struct list_head *new, struct list_head *head)
80339+{
80340+ __pax_list_add(new, head->prev, head);
80341+}
80342+extern void pax_list_del(struct list_head *entry);
80343+
80344 /**
80345 * list_replace - replace old entry by new one
80346 * @old : the element to be replaced
80347@@ -145,6 +158,8 @@ static inline void list_del_init(struct list_head *entry)
80348 INIT_LIST_HEAD(entry);
80349 }
80350
80351+extern void pax_list_del_init(struct list_head *entry);
80352+
80353 /**
80354 * list_move - delete from one list and add as another's head
80355 * @list: the entry to move
80356diff --git a/include/linux/math64.h b/include/linux/math64.h
80357index c45c089..298841c 100644
80358--- a/include/linux/math64.h
80359+++ b/include/linux/math64.h
80360@@ -15,7 +15,7 @@
80361 * This is commonly provided by 32bit archs to provide an optimized 64bit
80362 * divide.
80363 */
80364-static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
80365+static inline u64 __intentional_overflow(-1) div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
80366 {
80367 *remainder = dividend % divisor;
80368 return dividend / divisor;
80369@@ -42,7 +42,7 @@ static inline u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder)
80370 /**
80371 * div64_u64 - unsigned 64bit divide with 64bit divisor
80372 */
80373-static inline u64 div64_u64(u64 dividend, u64 divisor)
80374+static inline u64 __intentional_overflow(-1) div64_u64(u64 dividend, u64 divisor)
80375 {
80376 return dividend / divisor;
80377 }
80378@@ -61,7 +61,7 @@ static inline s64 div64_s64(s64 dividend, s64 divisor)
80379 #define div64_ul(x, y) div_u64((x), (y))
80380
80381 #ifndef div_u64_rem
80382-static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
80383+static inline u64 __intentional_overflow(-1) div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
80384 {
80385 *remainder = do_div(dividend, divisor);
80386 return dividend;
80387@@ -77,7 +77,7 @@ extern u64 div64_u64_rem(u64 dividend, u64 divisor, u64 *remainder);
80388 #endif
80389
80390 #ifndef div64_u64
80391-extern u64 div64_u64(u64 dividend, u64 divisor);
80392+extern u64 __intentional_overflow(-1) div64_u64(u64 dividend, u64 divisor);
80393 #endif
80394
80395 #ifndef div64_s64
80396@@ -94,7 +94,7 @@ extern s64 div64_s64(s64 dividend, s64 divisor);
80397 * divide.
80398 */
80399 #ifndef div_u64
80400-static inline u64 div_u64(u64 dividend, u32 divisor)
80401+static inline u64 __intentional_overflow(-1) div_u64(u64 dividend, u32 divisor)
80402 {
80403 u32 remainder;
80404 return div_u64_rem(dividend, divisor, &remainder);
80405diff --git a/include/linux/mempolicy.h b/include/linux/mempolicy.h
80406index f230a97..714c006 100644
80407--- a/include/linux/mempolicy.h
80408+++ b/include/linux/mempolicy.h
80409@@ -91,6 +91,10 @@ static inline struct mempolicy *mpol_dup(struct mempolicy *pol)
80410 }
80411
80412 #define vma_policy(vma) ((vma)->vm_policy)
80413+static inline void set_vma_policy(struct vm_area_struct *vma, struct mempolicy *pol)
80414+{
80415+ vma->vm_policy = pol;
80416+}
80417
80418 static inline void mpol_get(struct mempolicy *pol)
80419 {
80420@@ -228,6 +232,9 @@ static inline void mpol_free_shared_policy(struct shared_policy *p)
80421 }
80422
80423 #define vma_policy(vma) NULL
80424+static inline void set_vma_policy(struct vm_area_struct *vma, struct mempolicy *pol)
80425+{
80426+}
80427
80428 static inline int
80429 vma_dup_policy(struct vm_area_struct *src, struct vm_area_struct *dst)
80430diff --git a/include/linux/mm.h b/include/linux/mm.h
80431index d677706..673408c 100644
80432--- a/include/linux/mm.h
80433+++ b/include/linux/mm.h
80434@@ -127,6 +127,11 @@ extern unsigned int kobjsize(const void *objp);
80435 #define VM_HUGETLB 0x00400000 /* Huge TLB Page VM */
80436 #define VM_NONLINEAR 0x00800000 /* Is non-linear (remap_file_pages) */
80437 #define VM_ARCH_1 0x01000000 /* Architecture-specific flag */
80438+
80439+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_X86_32)
80440+#define VM_PAGEEXEC 0x02000000 /* vma->vm_page_prot needs special handling */
80441+#endif
80442+
80443 #define VM_DONTDUMP 0x04000000 /* Do not include in the core dump */
80444
80445 #ifdef CONFIG_MEM_SOFT_DIRTY
80446@@ -237,8 +242,8 @@ struct vm_operations_struct {
80447 /* called by access_process_vm when get_user_pages() fails, typically
80448 * for use by special VMAs that can switch between memory and hardware
80449 */
80450- int (*access)(struct vm_area_struct *vma, unsigned long addr,
80451- void *buf, int len, int write);
80452+ ssize_t (*access)(struct vm_area_struct *vma, unsigned long addr,
80453+ void *buf, size_t len, int write);
80454 #ifdef CONFIG_NUMA
80455 /*
80456 * set_policy() op must add a reference to any non-NULL @new mempolicy
80457@@ -268,6 +273,7 @@ struct vm_operations_struct {
80458 int (*remap_pages)(struct vm_area_struct *vma, unsigned long addr,
80459 unsigned long size, pgoff_t pgoff);
80460 };
80461+typedef struct vm_operations_struct __no_const vm_operations_struct_no_const;
80462
80463 struct mmu_gather;
80464 struct inode;
80465@@ -1133,8 +1139,8 @@ int follow_pfn(struct vm_area_struct *vma, unsigned long address,
80466 unsigned long *pfn);
80467 int follow_phys(struct vm_area_struct *vma, unsigned long address,
80468 unsigned int flags, unsigned long *prot, resource_size_t *phys);
80469-int generic_access_phys(struct vm_area_struct *vma, unsigned long addr,
80470- void *buf, int len, int write);
80471+ssize_t generic_access_phys(struct vm_area_struct *vma, unsigned long addr,
80472+ void *buf, size_t len, int write);
80473
80474 static inline void unmap_shared_mapping_range(struct address_space *mapping,
80475 loff_t const holebegin, loff_t const holelen)
80476@@ -1173,9 +1179,9 @@ static inline int fixup_user_fault(struct task_struct *tsk,
80477 }
80478 #endif
80479
80480-extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write);
80481-extern int access_remote_vm(struct mm_struct *mm, unsigned long addr,
80482- void *buf, int len, int write);
80483+extern ssize_t access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, size_t len, int write);
80484+extern ssize_t access_remote_vm(struct mm_struct *mm, unsigned long addr,
80485+ void *buf, size_t len, int write);
80486
80487 long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
80488 unsigned long start, unsigned long nr_pages,
80489@@ -1208,34 +1214,6 @@ int set_page_dirty_lock(struct page *page);
80490 int clear_page_dirty_for_io(struct page *page);
80491 int get_cmdline(struct task_struct *task, char *buffer, int buflen);
80492
80493-/* Is the vma a continuation of the stack vma above it? */
80494-static inline int vma_growsdown(struct vm_area_struct *vma, unsigned long addr)
80495-{
80496- return vma && (vma->vm_end == addr) && (vma->vm_flags & VM_GROWSDOWN);
80497-}
80498-
80499-static inline int stack_guard_page_start(struct vm_area_struct *vma,
80500- unsigned long addr)
80501-{
80502- return (vma->vm_flags & VM_GROWSDOWN) &&
80503- (vma->vm_start == addr) &&
80504- !vma_growsdown(vma->vm_prev, addr);
80505-}
80506-
80507-/* Is the vma a continuation of the stack vma below it? */
80508-static inline int vma_growsup(struct vm_area_struct *vma, unsigned long addr)
80509-{
80510- return vma && (vma->vm_start == addr) && (vma->vm_flags & VM_GROWSUP);
80511-}
80512-
80513-static inline int stack_guard_page_end(struct vm_area_struct *vma,
80514- unsigned long addr)
80515-{
80516- return (vma->vm_flags & VM_GROWSUP) &&
80517- (vma->vm_end == addr) &&
80518- !vma_growsup(vma->vm_next, addr);
80519-}
80520-
80521 extern pid_t
80522 vm_is_stack(struct task_struct *task, struct vm_area_struct *vma, int in_group);
80523
80524@@ -1335,6 +1313,15 @@ static inline void sync_mm_rss(struct mm_struct *mm)
80525 }
80526 #endif
80527
80528+#ifdef CONFIG_MMU
80529+pgprot_t vm_get_page_prot(vm_flags_t vm_flags);
80530+#else
80531+static inline pgprot_t vm_get_page_prot(vm_flags_t vm_flags)
80532+{
80533+ return __pgprot(0);
80534+}
80535+#endif
80536+
80537 int vma_wants_writenotify(struct vm_area_struct *vma);
80538
80539 extern pte_t *__get_locked_pte(struct mm_struct *mm, unsigned long addr,
80540@@ -1353,8 +1340,15 @@ static inline int __pud_alloc(struct mm_struct *mm, pgd_t *pgd,
80541 {
80542 return 0;
80543 }
80544+
80545+static inline int __pud_alloc_kernel(struct mm_struct *mm, pgd_t *pgd,
80546+ unsigned long address)
80547+{
80548+ return 0;
80549+}
80550 #else
80551 int __pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address);
80552+int __pud_alloc_kernel(struct mm_struct *mm, pgd_t *pgd, unsigned long address);
80553 #endif
80554
80555 #ifdef __PAGETABLE_PMD_FOLDED
80556@@ -1363,8 +1357,15 @@ static inline int __pmd_alloc(struct mm_struct *mm, pud_t *pud,
80557 {
80558 return 0;
80559 }
80560+
80561+static inline int __pmd_alloc_kernel(struct mm_struct *mm, pud_t *pud,
80562+ unsigned long address)
80563+{
80564+ return 0;
80565+}
80566 #else
80567 int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address);
80568+int __pmd_alloc_kernel(struct mm_struct *mm, pud_t *pud, unsigned long address);
80569 #endif
80570
80571 int __pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma,
80572@@ -1382,11 +1383,23 @@ static inline pud_t *pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long a
80573 NULL: pud_offset(pgd, address);
80574 }
80575
80576+static inline pud_t *pud_alloc_kernel(struct mm_struct *mm, pgd_t *pgd, unsigned long address)
80577+{
80578+ return (unlikely(pgd_none(*pgd)) && __pud_alloc_kernel(mm, pgd, address))?
80579+ NULL: pud_offset(pgd, address);
80580+}
80581+
80582 static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address)
80583 {
80584 return (unlikely(pud_none(*pud)) && __pmd_alloc(mm, pud, address))?
80585 NULL: pmd_offset(pud, address);
80586 }
80587+
80588+static inline pmd_t *pmd_alloc_kernel(struct mm_struct *mm, pud_t *pud, unsigned long address)
80589+{
80590+ return (unlikely(pud_none(*pud)) && __pmd_alloc_kernel(mm, pud, address))?
80591+ NULL: pmd_offset(pud, address);
80592+}
80593 #endif /* CONFIG_MMU && !__ARCH_HAS_4LEVEL_HACK */
80594
80595 #if USE_SPLIT_PTE_PTLOCKS
80596@@ -1783,7 +1796,7 @@ extern int install_special_mapping(struct mm_struct *mm,
80597 unsigned long addr, unsigned long len,
80598 unsigned long flags, struct page **pages);
80599
80600-extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
80601+extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned long, unsigned long, unsigned long) __intentional_overflow(-1);
80602
80603 extern unsigned long mmap_region(struct file *file, unsigned long addr,
80604 unsigned long len, vm_flags_t vm_flags, unsigned long pgoff);
80605@@ -1791,6 +1804,7 @@ extern unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
80606 unsigned long len, unsigned long prot, unsigned long flags,
80607 unsigned long pgoff, unsigned long *populate);
80608 extern int do_munmap(struct mm_struct *, unsigned long, size_t);
80609+extern int __do_munmap(struct mm_struct *, unsigned long, size_t);
80610
80611 #ifdef CONFIG_MMU
80612 extern int __mm_populate(unsigned long addr, unsigned long len,
80613@@ -1819,10 +1833,11 @@ struct vm_unmapped_area_info {
80614 unsigned long high_limit;
80615 unsigned long align_mask;
80616 unsigned long align_offset;
80617+ unsigned long threadstack_offset;
80618 };
80619
80620-extern unsigned long unmapped_area(struct vm_unmapped_area_info *info);
80621-extern unsigned long unmapped_area_topdown(struct vm_unmapped_area_info *info);
80622+extern unsigned long unmapped_area(const struct vm_unmapped_area_info *info);
80623+extern unsigned long unmapped_area_topdown(const struct vm_unmapped_area_info *info);
80624
80625 /*
80626 * Search for an unmapped address range.
80627@@ -1834,7 +1849,7 @@ extern unsigned long unmapped_area_topdown(struct vm_unmapped_area_info *info);
80628 * - satisfies (begin_addr & align_mask) == (align_offset & align_mask)
80629 */
80630 static inline unsigned long
80631-vm_unmapped_area(struct vm_unmapped_area_info *info)
80632+vm_unmapped_area(const struct vm_unmapped_area_info *info)
80633 {
80634 if (!(info->flags & VM_UNMAPPED_AREA_TOPDOWN))
80635 return unmapped_area(info);
80636@@ -1896,6 +1911,10 @@ extern struct vm_area_struct * find_vma(struct mm_struct * mm, unsigned long add
80637 extern struct vm_area_struct * find_vma_prev(struct mm_struct * mm, unsigned long addr,
80638 struct vm_area_struct **pprev);
80639
80640+extern struct vm_area_struct *pax_find_mirror_vma(struct vm_area_struct *vma);
80641+extern __must_check long pax_mirror_vma(struct vm_area_struct *vma_m, struct vm_area_struct *vma);
80642+extern void pax_mirror_file_pte(struct vm_area_struct *vma, unsigned long address, struct page *page_m, spinlock_t *ptl);
80643+
80644 /* Look up the first VMA which intersects the interval start_addr..end_addr-1,
80645 NULL if none. Assume start_addr < end_addr. */
80646 static inline struct vm_area_struct * find_vma_intersection(struct mm_struct * mm, unsigned long start_addr, unsigned long end_addr)
80647@@ -1924,15 +1943,6 @@ static inline struct vm_area_struct *find_exact_vma(struct mm_struct *mm,
80648 return vma;
80649 }
80650
80651-#ifdef CONFIG_MMU
80652-pgprot_t vm_get_page_prot(unsigned long vm_flags);
80653-#else
80654-static inline pgprot_t vm_get_page_prot(unsigned long vm_flags)
80655-{
80656- return __pgprot(0);
80657-}
80658-#endif
80659-
80660 #ifdef CONFIG_NUMA_BALANCING
80661 unsigned long change_prot_numa(struct vm_area_struct *vma,
80662 unsigned long start, unsigned long end);
80663@@ -1984,6 +1994,11 @@ void vm_stat_account(struct mm_struct *, unsigned long, struct file *, long);
80664 static inline void vm_stat_account(struct mm_struct *mm,
80665 unsigned long flags, struct file *file, long pages)
80666 {
80667+
80668+#ifdef CONFIG_PAX_RANDMMAP
80669+ if (!(mm->pax_flags & MF_PAX_RANDMMAP) || (flags & (VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)))
80670+#endif
80671+
80672 mm->total_vm += pages;
80673 }
80674 #endif /* CONFIG_PROC_FS */
80675@@ -2065,7 +2080,7 @@ extern int unpoison_memory(unsigned long pfn);
80676 extern int sysctl_memory_failure_early_kill;
80677 extern int sysctl_memory_failure_recovery;
80678 extern void shake_page(struct page *p, int access);
80679-extern atomic_long_t num_poisoned_pages;
80680+extern atomic_long_unchecked_t num_poisoned_pages;
80681 extern int soft_offline_page(struct page *page, int flags);
80682
80683 #if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLBFS)
80684@@ -2100,5 +2115,11 @@ void __init setup_nr_node_ids(void);
80685 static inline void setup_nr_node_ids(void) {}
80686 #endif
80687
80688+#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT
80689+extern void track_exec_limit(struct mm_struct *mm, unsigned long start, unsigned long end, unsigned long prot);
80690+#else
80691+static inline void track_exec_limit(struct mm_struct *mm, unsigned long start, unsigned long end, unsigned long prot) {}
80692+#endif
80693+
80694 #endif /* __KERNEL__ */
80695 #endif /* _LINUX_MM_H */
80696diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
80697index 8967e20..61f7900 100644
80698--- a/include/linux/mm_types.h
80699+++ b/include/linux/mm_types.h
80700@@ -308,7 +308,9 @@ struct vm_area_struct {
80701 #ifdef CONFIG_NUMA
80702 struct mempolicy *vm_policy; /* NUMA policy for the VMA */
80703 #endif
80704-};
80705+
80706+ struct vm_area_struct *vm_mirror;/* PaX: mirror vma or NULL */
80707+} __randomize_layout;
80708
80709 struct core_thread {
80710 struct task_struct *task;
80711@@ -454,7 +456,25 @@ struct mm_struct {
80712 bool tlb_flush_pending;
80713 #endif
80714 struct uprobes_state uprobes_state;
80715-};
80716+
80717+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
80718+ unsigned long pax_flags;
80719+#endif
80720+
80721+#ifdef CONFIG_PAX_DLRESOLVE
80722+ unsigned long call_dl_resolve;
80723+#endif
80724+
80725+#if defined(CONFIG_PPC32) && defined(CONFIG_PAX_EMUSIGRT)
80726+ unsigned long call_syscall;
80727+#endif
80728+
80729+#ifdef CONFIG_PAX_ASLR
80730+ unsigned long delta_mmap; /* randomized offset */
80731+ unsigned long delta_stack; /* randomized offset */
80732+#endif
80733+
80734+} __randomize_layout;
80735
80736 static inline void mm_init_cpumask(struct mm_struct *mm)
80737 {
80738diff --git a/include/linux/mmiotrace.h b/include/linux/mmiotrace.h
80739index c5d5278..f0b68c8 100644
80740--- a/include/linux/mmiotrace.h
80741+++ b/include/linux/mmiotrace.h
80742@@ -46,7 +46,7 @@ extern int kmmio_handler(struct pt_regs *regs, unsigned long addr);
80743 /* Called from ioremap.c */
80744 extern void mmiotrace_ioremap(resource_size_t offset, unsigned long size,
80745 void __iomem *addr);
80746-extern void mmiotrace_iounmap(volatile void __iomem *addr);
80747+extern void mmiotrace_iounmap(const volatile void __iomem *addr);
80748
80749 /* For anyone to insert markers. Remember trailing newline. */
80750 extern __printf(1, 2) int mmiotrace_printk(const char *fmt, ...);
80751@@ -66,7 +66,7 @@ static inline void mmiotrace_ioremap(resource_size_t offset,
80752 {
80753 }
80754
80755-static inline void mmiotrace_iounmap(volatile void __iomem *addr)
80756+static inline void mmiotrace_iounmap(const volatile void __iomem *addr)
80757 {
80758 }
80759
80760diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
80761index 835aa3d..676b387 100644
80762--- a/include/linux/mmzone.h
80763+++ b/include/linux/mmzone.h
80764@@ -406,7 +406,7 @@ struct zone {
80765 unsigned long flags; /* zone flags, see below */
80766
80767 /* Zone statistics */
80768- atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS];
80769+ atomic_long_unchecked_t vm_stat[NR_VM_ZONE_STAT_ITEMS];
80770
80771 /*
80772 * The target ratio of ACTIVE_ANON to INACTIVE_ANON pages on
80773diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
80774index 44eeef0..a92d3f9 100644
80775--- a/include/linux/mod_devicetable.h
80776+++ b/include/linux/mod_devicetable.h
80777@@ -139,7 +139,7 @@ struct usb_device_id {
80778 #define USB_DEVICE_ID_MATCH_INT_PROTOCOL 0x0200
80779 #define USB_DEVICE_ID_MATCH_INT_NUMBER 0x0400
80780
80781-#define HID_ANY_ID (~0)
80782+#define HID_ANY_ID (~0U)
80783 #define HID_BUS_ANY 0xffff
80784 #define HID_GROUP_ANY 0x0000
80785
80786@@ -475,7 +475,7 @@ struct dmi_system_id {
80787 const char *ident;
80788 struct dmi_strmatch matches[4];
80789 void *driver_data;
80790-};
80791+} __do_const;
80792 /*
80793 * struct dmi_device_id appears during expansion of
80794 * "MODULE_DEVICE_TABLE(dmi, x)". Compiler doesn't look inside it
80795diff --git a/include/linux/module.h b/include/linux/module.h
80796index f520a76..5f898ef 100644
80797--- a/include/linux/module.h
80798+++ b/include/linux/module.h
80799@@ -17,9 +17,11 @@
80800 #include <linux/moduleparam.h>
80801 #include <linux/jump_label.h>
80802 #include <linux/export.h>
80803+#include <linux/fs.h>
80804
80805 #include <linux/percpu.h>
80806 #include <asm/module.h>
80807+#include <asm/pgtable.h>
80808
80809 /* In stripped ARM and x86-64 modules, ~ is surprisingly rare. */
80810 #define MODULE_SIG_STRING "~Module signature appended~\n"
80811@@ -42,7 +44,7 @@ struct module_kobject {
80812 struct kobject *drivers_dir;
80813 struct module_param_attrs *mp;
80814 struct completion *kobj_completion;
80815-};
80816+} __randomize_layout;
80817
80818 struct module_attribute {
80819 struct attribute attr;
80820@@ -54,12 +56,13 @@ struct module_attribute {
80821 int (*test)(struct module *);
80822 void (*free)(struct module *);
80823 };
80824+typedef struct module_attribute __no_const module_attribute_no_const;
80825
80826 struct module_version_attribute {
80827 struct module_attribute mattr;
80828 const char *module_name;
80829 const char *version;
80830-} __attribute__ ((__aligned__(sizeof(void *))));
80831+} __do_const __attribute__ ((__aligned__(sizeof(void *))));
80832
80833 extern ssize_t __modver_version_show(struct module_attribute *,
80834 struct module_kobject *, char *);
80835@@ -235,7 +238,7 @@ struct module {
80836
80837 /* Sysfs stuff. */
80838 struct module_kobject mkobj;
80839- struct module_attribute *modinfo_attrs;
80840+ module_attribute_no_const *modinfo_attrs;
80841 const char *version;
80842 const char *srcversion;
80843 struct kobject *holders_dir;
80844@@ -284,19 +287,16 @@ struct module {
80845 int (*init)(void);
80846
80847 /* If this is non-NULL, vfree after init() returns */
80848- void *module_init;
80849+ void *module_init_rx, *module_init_rw;
80850
80851 /* Here is the actual code + data, vfree'd on unload. */
80852- void *module_core;
80853+ void *module_core_rx, *module_core_rw;
80854
80855 /* Here are the sizes of the init and core sections */
80856- unsigned int init_size, core_size;
80857+ unsigned int init_size_rw, core_size_rw;
80858
80859 /* The size of the executable code in each section. */
80860- unsigned int init_text_size, core_text_size;
80861-
80862- /* Size of RO sections of the module (text+rodata) */
80863- unsigned int init_ro_size, core_ro_size;
80864+ unsigned int init_size_rx, core_size_rx;
80865
80866 /* Arch-specific module values */
80867 struct mod_arch_specific arch;
80868@@ -352,6 +352,10 @@ struct module {
80869 #ifdef CONFIG_EVENT_TRACING
80870 struct ftrace_event_call **trace_events;
80871 unsigned int num_trace_events;
80872+ struct file_operations trace_id;
80873+ struct file_operations trace_enable;
80874+ struct file_operations trace_format;
80875+ struct file_operations trace_filter;
80876 #endif
80877 #ifdef CONFIG_FTRACE_MCOUNT_RECORD
80878 unsigned int num_ftrace_callsites;
80879@@ -375,7 +379,7 @@ struct module {
80880 ctor_fn_t *ctors;
80881 unsigned int num_ctors;
80882 #endif
80883-};
80884+} __randomize_layout;
80885 #ifndef MODULE_ARCH_INIT
80886 #define MODULE_ARCH_INIT {}
80887 #endif
80888@@ -396,16 +400,46 @@ bool is_module_address(unsigned long addr);
80889 bool is_module_percpu_address(unsigned long addr);
80890 bool is_module_text_address(unsigned long addr);
80891
80892+static inline int within_module_range(unsigned long addr, void *start, unsigned long size)
80893+{
80894+
80895+#ifdef CONFIG_PAX_KERNEXEC
80896+ if (ktla_ktva(addr) >= (unsigned long)start &&
80897+ ktla_ktva(addr) < (unsigned long)start + size)
80898+ return 1;
80899+#endif
80900+
80901+ return ((void *)addr >= start && (void *)addr < start + size);
80902+}
80903+
80904+static inline int within_module_core_rx(unsigned long addr, const struct module *mod)
80905+{
80906+ return within_module_range(addr, mod->module_core_rx, mod->core_size_rx);
80907+}
80908+
80909+static inline int within_module_core_rw(unsigned long addr, const struct module *mod)
80910+{
80911+ return within_module_range(addr, mod->module_core_rw, mod->core_size_rw);
80912+}
80913+
80914+static inline int within_module_init_rx(unsigned long addr, const struct module *mod)
80915+{
80916+ return within_module_range(addr, mod->module_init_rx, mod->init_size_rx);
80917+}
80918+
80919+static inline int within_module_init_rw(unsigned long addr, const struct module *mod)
80920+{
80921+ return within_module_range(addr, mod->module_init_rw, mod->init_size_rw);
80922+}
80923+
80924 static inline int within_module_core(unsigned long addr, const struct module *mod)
80925 {
80926- return (unsigned long)mod->module_core <= addr &&
80927- addr < (unsigned long)mod->module_core + mod->core_size;
80928+ return within_module_core_rx(addr, mod) || within_module_core_rw(addr, mod);
80929 }
80930
80931 static inline int within_module_init(unsigned long addr, const struct module *mod)
80932 {
80933- return (unsigned long)mod->module_init <= addr &&
80934- addr < (unsigned long)mod->module_init + mod->init_size;
80935+ return within_module_init_rx(addr, mod) || within_module_init_rw(addr, mod);
80936 }
80937
80938 /* Search for module by name: must hold module_mutex. */
80939diff --git a/include/linux/moduleloader.h b/include/linux/moduleloader.h
80940index 560ca53..ef621ef 100644
80941--- a/include/linux/moduleloader.h
80942+++ b/include/linux/moduleloader.h
80943@@ -25,9 +25,21 @@ unsigned int arch_mod_section_prepend(struct module *mod, unsigned int section);
80944 sections. Returns NULL on failure. */
80945 void *module_alloc(unsigned long size);
80946
80947+#ifdef CONFIG_PAX_KERNEXEC
80948+void *module_alloc_exec(unsigned long size);
80949+#else
80950+#define module_alloc_exec(x) module_alloc(x)
80951+#endif
80952+
80953 /* Free memory returned from module_alloc. */
80954 void module_free(struct module *mod, void *module_region);
80955
80956+#ifdef CONFIG_PAX_KERNEXEC
80957+void module_free_exec(struct module *mod, void *module_region);
80958+#else
80959+#define module_free_exec(x, y) module_free((x), (y))
80960+#endif
80961+
80962 /*
80963 * Apply the given relocation to the (simplified) ELF. Return -error
80964 * or 0.
80965@@ -45,7 +57,9 @@ static inline int apply_relocate(Elf_Shdr *sechdrs,
80966 unsigned int relsec,
80967 struct module *me)
80968 {
80969+#ifdef CONFIG_MODULES
80970 printk(KERN_ERR "module %s: REL relocation unsupported\n", me->name);
80971+#endif
80972 return -ENOEXEC;
80973 }
80974 #endif
80975@@ -67,7 +81,9 @@ static inline int apply_relocate_add(Elf_Shdr *sechdrs,
80976 unsigned int relsec,
80977 struct module *me)
80978 {
80979+#ifdef CONFIG_MODULES
80980 printk(KERN_ERR "module %s: REL relocation unsupported\n", me->name);
80981+#endif
80982 return -ENOEXEC;
80983 }
80984 #endif
80985diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
80986index 204a677..e9b486a 100644
80987--- a/include/linux/moduleparam.h
80988+++ b/include/linux/moduleparam.h
80989@@ -293,7 +293,7 @@ static inline void __kernel_param_unlock(void)
80990 * @len is usually just sizeof(string).
80991 */
80992 #define module_param_string(name, string, len, perm) \
80993- static const struct kparam_string __param_string_##name \
80994+ static const struct kparam_string __param_string_##name __used \
80995 = { len, string }; \
80996 __module_param_call(MODULE_PARAM_PREFIX, name, \
80997 &param_ops_string, \
80998@@ -432,7 +432,7 @@ extern int param_set_bint(const char *val, const struct kernel_param *kp);
80999 */
81000 #define module_param_array_named(name, array, type, nump, perm) \
81001 param_check_##type(name, &(array)[0]); \
81002- static const struct kparam_array __param_arr_##name \
81003+ static const struct kparam_array __param_arr_##name __used \
81004 = { .max = ARRAY_SIZE(array), .num = nump, \
81005 .ops = &param_ops_##type, \
81006 .elemsize = sizeof(array[0]), .elem = array }; \
81007diff --git a/include/linux/mount.h b/include/linux/mount.h
81008index 839bac2..a96b37c 100644
81009--- a/include/linux/mount.h
81010+++ b/include/linux/mount.h
81011@@ -59,7 +59,7 @@ struct vfsmount {
81012 struct dentry *mnt_root; /* root of the mounted tree */
81013 struct super_block *mnt_sb; /* pointer to superblock */
81014 int mnt_flags;
81015-};
81016+} __randomize_layout;
81017
81018 struct file; /* forward dec */
81019
81020diff --git a/include/linux/namei.h b/include/linux/namei.h
81021index 492de72..1bddcd4 100644
81022--- a/include/linux/namei.h
81023+++ b/include/linux/namei.h
81024@@ -19,7 +19,7 @@ struct nameidata {
81025 unsigned seq, m_seq;
81026 int last_type;
81027 unsigned depth;
81028- char *saved_names[MAX_NESTED_LINKS + 1];
81029+ const char *saved_names[MAX_NESTED_LINKS + 1];
81030 };
81031
81032 /*
81033@@ -83,12 +83,12 @@ extern void unlock_rename(struct dentry *, struct dentry *);
81034
81035 extern void nd_jump_link(struct nameidata *nd, struct path *path);
81036
81037-static inline void nd_set_link(struct nameidata *nd, char *path)
81038+static inline void nd_set_link(struct nameidata *nd, const char *path)
81039 {
81040 nd->saved_names[nd->depth] = path;
81041 }
81042
81043-static inline char *nd_get_link(struct nameidata *nd)
81044+static inline const char *nd_get_link(const struct nameidata *nd)
81045 {
81046 return nd->saved_names[nd->depth];
81047 }
81048diff --git a/include/linux/net.h b/include/linux/net.h
81049index 17d8339..81656c0 100644
81050--- a/include/linux/net.h
81051+++ b/include/linux/net.h
81052@@ -192,7 +192,7 @@ struct net_proto_family {
81053 int (*create)(struct net *net, struct socket *sock,
81054 int protocol, int kern);
81055 struct module *owner;
81056-};
81057+} __do_const;
81058
81059 struct iovec;
81060 struct kvec;
81061diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
81062index b42d07b..7f45ae2 100644
81063--- a/include/linux/netdevice.h
81064+++ b/include/linux/netdevice.h
81065@@ -1146,6 +1146,7 @@ struct net_device_ops {
81066 void *priv);
81067 int (*ndo_get_lock_subclass)(struct net_device *dev);
81068 };
81069+typedef struct net_device_ops __no_const net_device_ops_no_const;
81070
81071 /**
81072 * enum net_device_priv_flags - &struct net_device priv_flags
81073@@ -1313,11 +1314,11 @@ struct net_device {
81074 struct net_device_stats stats;
81075
81076 /* dropped packets by core network, Do not use this in drivers */
81077- atomic_long_t rx_dropped;
81078- atomic_long_t tx_dropped;
81079+ atomic_long_unchecked_t rx_dropped;
81080+ atomic_long_unchecked_t tx_dropped;
81081
81082 /* Stats to monitor carrier on<->off transitions */
81083- atomic_t carrier_changes;
81084+ atomic_unchecked_t carrier_changes;
81085
81086 #ifdef CONFIG_WIRELESS_EXT
81087 /* List of functions to handle Wireless Extensions (instead of ioctl).
81088diff --git a/include/linux/netfilter.h b/include/linux/netfilter.h
81089index 2077489..a15e561 100644
81090--- a/include/linux/netfilter.h
81091+++ b/include/linux/netfilter.h
81092@@ -84,7 +84,7 @@ struct nf_sockopt_ops {
81093 #endif
81094 /* Use the module struct to lock set/get code in place */
81095 struct module *owner;
81096-};
81097+} __do_const;
81098
81099 /* Function to register/unregister hook points. */
81100 int nf_register_hook(struct nf_hook_ops *reg);
81101diff --git a/include/linux/netfilter/nfnetlink.h b/include/linux/netfilter/nfnetlink.h
81102index e955d47..04a5338 100644
81103--- a/include/linux/netfilter/nfnetlink.h
81104+++ b/include/linux/netfilter/nfnetlink.h
81105@@ -19,7 +19,7 @@ struct nfnl_callback {
81106 const struct nlattr * const cda[]);
81107 const struct nla_policy *policy; /* netlink attribute policy */
81108 const u_int16_t attr_count; /* number of nlattr's */
81109-};
81110+} __do_const;
81111
81112 struct nfnetlink_subsystem {
81113 const char *name;
81114diff --git a/include/linux/netfilter/xt_gradm.h b/include/linux/netfilter/xt_gradm.h
81115new file mode 100644
81116index 0000000..33f4af8
81117--- /dev/null
81118+++ b/include/linux/netfilter/xt_gradm.h
81119@@ -0,0 +1,9 @@
81120+#ifndef _LINUX_NETFILTER_XT_GRADM_H
81121+#define _LINUX_NETFILTER_XT_GRADM_H 1
81122+
81123+struct xt_gradm_mtinfo {
81124+ __u16 flags;
81125+ __u16 invflags;
81126+};
81127+
81128+#endif
81129diff --git a/include/linux/nls.h b/include/linux/nls.h
81130index 520681b..1d67ed2 100644
81131--- a/include/linux/nls.h
81132+++ b/include/linux/nls.h
81133@@ -31,7 +31,7 @@ struct nls_table {
81134 const unsigned char *charset2upper;
81135 struct module *owner;
81136 struct nls_table *next;
81137-};
81138+} __do_const;
81139
81140 /* this value hold the maximum octet of charset */
81141 #define NLS_MAX_CHARSET_SIZE 6 /* for UTF-8 */
81142diff --git a/include/linux/notifier.h b/include/linux/notifier.h
81143index d14a4c3..a078786 100644
81144--- a/include/linux/notifier.h
81145+++ b/include/linux/notifier.h
81146@@ -54,7 +54,8 @@ struct notifier_block {
81147 notifier_fn_t notifier_call;
81148 struct notifier_block __rcu *next;
81149 int priority;
81150-};
81151+} __do_const;
81152+typedef struct notifier_block __no_const notifier_block_no_const;
81153
81154 struct atomic_notifier_head {
81155 spinlock_t lock;
81156diff --git a/include/linux/oprofile.h b/include/linux/oprofile.h
81157index b2a0f15..4d7da32 100644
81158--- a/include/linux/oprofile.h
81159+++ b/include/linux/oprofile.h
81160@@ -138,9 +138,9 @@ int oprofilefs_create_ulong(struct dentry * root,
81161 int oprofilefs_create_ro_ulong(struct dentry * root,
81162 char const * name, ulong * val);
81163
81164-/** Create a file for read-only access to an atomic_t. */
81165+/** Create a file for read-only access to an atomic_unchecked_t. */
81166 int oprofilefs_create_ro_atomic(struct dentry * root,
81167- char const * name, atomic_t * val);
81168+ char const * name, atomic_unchecked_t * val);
81169
81170 /** create a directory */
81171 struct dentry *oprofilefs_mkdir(struct dentry *parent, char const *name);
81172diff --git a/include/linux/padata.h b/include/linux/padata.h
81173index 4386946..f50c615 100644
81174--- a/include/linux/padata.h
81175+++ b/include/linux/padata.h
81176@@ -129,7 +129,7 @@ struct parallel_data {
81177 struct padata_serial_queue __percpu *squeue;
81178 atomic_t reorder_objects;
81179 atomic_t refcnt;
81180- atomic_t seq_nr;
81181+ atomic_unchecked_t seq_nr;
81182 struct padata_cpumask cpumask;
81183 spinlock_t lock ____cacheline_aligned;
81184 unsigned int processed;
81185diff --git a/include/linux/path.h b/include/linux/path.h
81186index d137218..be0c176 100644
81187--- a/include/linux/path.h
81188+++ b/include/linux/path.h
81189@@ -1,13 +1,15 @@
81190 #ifndef _LINUX_PATH_H
81191 #define _LINUX_PATH_H
81192
81193+#include <linux/compiler.h>
81194+
81195 struct dentry;
81196 struct vfsmount;
81197
81198 struct path {
81199 struct vfsmount *mnt;
81200 struct dentry *dentry;
81201-};
81202+} __randomize_layout;
81203
81204 extern void path_get(const struct path *);
81205 extern void path_put(const struct path *);
81206diff --git a/include/linux/pci_hotplug.h b/include/linux/pci_hotplug.h
81207index 5f2e559..7d59314 100644
81208--- a/include/linux/pci_hotplug.h
81209+++ b/include/linux/pci_hotplug.h
81210@@ -71,7 +71,8 @@ struct hotplug_slot_ops {
81211 int (*get_latch_status) (struct hotplug_slot *slot, u8 *value);
81212 int (*get_adapter_status) (struct hotplug_slot *slot, u8 *value);
81213 int (*reset_slot) (struct hotplug_slot *slot, int probe);
81214-};
81215+} __do_const;
81216+typedef struct hotplug_slot_ops __no_const hotplug_slot_ops_no_const;
81217
81218 /**
81219 * struct hotplug_slot_info - used to notify the hotplug pci core of the state of the slot
81220diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
81221index 3ef6ea1..ed1a248 100644
81222--- a/include/linux/perf_event.h
81223+++ b/include/linux/perf_event.h
81224@@ -328,8 +328,8 @@ struct perf_event {
81225
81226 enum perf_event_active_state state;
81227 unsigned int attach_state;
81228- local64_t count;
81229- atomic64_t child_count;
81230+ local64_t count; /* PaX: fix it one day */
81231+ atomic64_unchecked_t child_count;
81232
81233 /*
81234 * These are the total time in nanoseconds that the event
81235@@ -380,8 +380,8 @@ struct perf_event {
81236 * These accumulate total time (in nanoseconds) that children
81237 * events have been enabled and running, respectively.
81238 */
81239- atomic64_t child_total_time_enabled;
81240- atomic64_t child_total_time_running;
81241+ atomic64_unchecked_t child_total_time_enabled;
81242+ atomic64_unchecked_t child_total_time_running;
81243
81244 /*
81245 * Protect attach/detach and child_list:
81246@@ -710,7 +710,7 @@ static inline void perf_callchain_store(struct perf_callchain_entry *entry, u64
81247 entry->ip[entry->nr++] = ip;
81248 }
81249
81250-extern int sysctl_perf_event_paranoid;
81251+extern int sysctl_perf_event_legitimately_concerned;
81252 extern int sysctl_perf_event_mlock;
81253 extern int sysctl_perf_event_sample_rate;
81254 extern int sysctl_perf_cpu_time_max_percent;
81255@@ -725,19 +725,24 @@ extern int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write,
81256 loff_t *ppos);
81257
81258
81259+static inline bool perf_paranoid_any(void)
81260+{
81261+ return sysctl_perf_event_legitimately_concerned > 2;
81262+}
81263+
81264 static inline bool perf_paranoid_tracepoint_raw(void)
81265 {
81266- return sysctl_perf_event_paranoid > -1;
81267+ return sysctl_perf_event_legitimately_concerned > -1;
81268 }
81269
81270 static inline bool perf_paranoid_cpu(void)
81271 {
81272- return sysctl_perf_event_paranoid > 0;
81273+ return sysctl_perf_event_legitimately_concerned > 0;
81274 }
81275
81276 static inline bool perf_paranoid_kernel(void)
81277 {
81278- return sysctl_perf_event_paranoid > 1;
81279+ return sysctl_perf_event_legitimately_concerned > 1;
81280 }
81281
81282 extern void perf_event_init(void);
81283@@ -867,7 +872,7 @@ struct perf_pmu_events_attr {
81284 struct device_attribute attr;
81285 u64 id;
81286 const char *event_str;
81287-};
81288+} __do_const;
81289
81290 #define PMU_EVENT_ATTR(_name, _var, _id, _show) \
81291 static struct perf_pmu_events_attr _var = { \
81292diff --git a/include/linux/pid_namespace.h b/include/linux/pid_namespace.h
81293index 7246ef3..1539ea4 100644
81294--- a/include/linux/pid_namespace.h
81295+++ b/include/linux/pid_namespace.h
81296@@ -43,7 +43,7 @@ struct pid_namespace {
81297 int hide_pid;
81298 int reboot; /* group exit code if this pidns was rebooted */
81299 unsigned int proc_inum;
81300-};
81301+} __randomize_layout;
81302
81303 extern struct pid_namespace init_pid_ns;
81304
81305diff --git a/include/linux/pipe_fs_i.h b/include/linux/pipe_fs_i.h
81306index eb8b8ac..62649e1 100644
81307--- a/include/linux/pipe_fs_i.h
81308+++ b/include/linux/pipe_fs_i.h
81309@@ -47,10 +47,10 @@ struct pipe_inode_info {
81310 struct mutex mutex;
81311 wait_queue_head_t wait;
81312 unsigned int nrbufs, curbuf, buffers;
81313- unsigned int readers;
81314- unsigned int writers;
81315- unsigned int files;
81316- unsigned int waiting_writers;
81317+ atomic_t readers;
81318+ atomic_t writers;
81319+ atomic_t files;
81320+ atomic_t waiting_writers;
81321 unsigned int r_counter;
81322 unsigned int w_counter;
81323 struct page *tmp_page;
81324diff --git a/include/linux/pm.h b/include/linux/pm.h
81325index d915d03..0531037 100644
81326--- a/include/linux/pm.h
81327+++ b/include/linux/pm.h
81328@@ -600,6 +600,7 @@ extern int dev_pm_put_subsys_data(struct device *dev);
81329 struct dev_pm_domain {
81330 struct dev_pm_ops ops;
81331 };
81332+typedef struct dev_pm_domain __no_const dev_pm_domain_no_const;
81333
81334 /*
81335 * The PM_EVENT_ messages are also used by drivers implementing the legacy
81336diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h
81337index 7c1d252..0e7061d 100644
81338--- a/include/linux/pm_domain.h
81339+++ b/include/linux/pm_domain.h
81340@@ -44,11 +44,11 @@ struct gpd_dev_ops {
81341 int (*thaw_early)(struct device *dev);
81342 int (*thaw)(struct device *dev);
81343 bool (*active_wakeup)(struct device *dev);
81344-};
81345+} __no_const;
81346
81347 struct gpd_cpu_data {
81348 unsigned int saved_exit_latency;
81349- struct cpuidle_state *idle_state;
81350+ cpuidle_state_no_const *idle_state;
81351 };
81352
81353 struct generic_pm_domain {
81354diff --git a/include/linux/pm_runtime.h b/include/linux/pm_runtime.h
81355index 2a5897a..4f9af63 100644
81356--- a/include/linux/pm_runtime.h
81357+++ b/include/linux/pm_runtime.h
81358@@ -113,7 +113,7 @@ static inline bool pm_runtime_callbacks_present(struct device *dev)
81359
81360 static inline void pm_runtime_mark_last_busy(struct device *dev)
81361 {
81362- ACCESS_ONCE(dev->power.last_busy) = jiffies;
81363+ ACCESS_ONCE_RW(dev->power.last_busy) = jiffies;
81364 }
81365
81366 #else /* !CONFIG_PM_RUNTIME */
81367diff --git a/include/linux/pnp.h b/include/linux/pnp.h
81368index 195aafc..49a7bc2 100644
81369--- a/include/linux/pnp.h
81370+++ b/include/linux/pnp.h
81371@@ -297,7 +297,7 @@ static inline void pnp_set_drvdata(struct pnp_dev *pdev, void *data)
81372 struct pnp_fixup {
81373 char id[7];
81374 void (*quirk_function) (struct pnp_dev * dev); /* fixup function */
81375-};
81376+} __do_const;
81377
81378 /* config parameters */
81379 #define PNP_CONFIG_NORMAL 0x0001
81380diff --git a/include/linux/poison.h b/include/linux/poison.h
81381index 2110a81..13a11bb 100644
81382--- a/include/linux/poison.h
81383+++ b/include/linux/poison.h
81384@@ -19,8 +19,8 @@
81385 * under normal circumstances, used to verify that nobody uses
81386 * non-initialized list entries.
81387 */
81388-#define LIST_POISON1 ((void *) 0x00100100 + POISON_POINTER_DELTA)
81389-#define LIST_POISON2 ((void *) 0x00200200 + POISON_POINTER_DELTA)
81390+#define LIST_POISON1 ((void *) (long)0xFFFFFF01)
81391+#define LIST_POISON2 ((void *) (long)0xFFFFFF02)
81392
81393 /********** include/linux/timer.h **********/
81394 /*
81395diff --git a/include/linux/power/smartreflex.h b/include/linux/power/smartreflex.h
81396index d8b187c3..9a9257a 100644
81397--- a/include/linux/power/smartreflex.h
81398+++ b/include/linux/power/smartreflex.h
81399@@ -238,7 +238,7 @@ struct omap_sr_class_data {
81400 int (*notify)(struct omap_sr *sr, u32 status);
81401 u8 notify_flags;
81402 u8 class_type;
81403-};
81404+} __do_const;
81405
81406 /**
81407 * struct omap_sr_nvalue_table - Smartreflex n-target value info
81408diff --git a/include/linux/ppp-comp.h b/include/linux/ppp-comp.h
81409index 4ea1d37..80f4b33 100644
81410--- a/include/linux/ppp-comp.h
81411+++ b/include/linux/ppp-comp.h
81412@@ -84,7 +84,7 @@ struct compressor {
81413 struct module *owner;
81414 /* Extra skb space needed by the compressor algorithm */
81415 unsigned int comp_extra;
81416-};
81417+} __do_const;
81418
81419 /*
81420 * The return value from decompress routine is the length of the
81421diff --git a/include/linux/preempt.h b/include/linux/preempt.h
81422index de83b4e..c4b997d 100644
81423--- a/include/linux/preempt.h
81424+++ b/include/linux/preempt.h
81425@@ -27,11 +27,16 @@ extern void preempt_count_sub(int val);
81426 #define preempt_count_dec_and_test() __preempt_count_dec_and_test()
81427 #endif
81428
81429+#define raw_preempt_count_add(val) __preempt_count_add(val)
81430+#define raw_preempt_count_sub(val) __preempt_count_sub(val)
81431+
81432 #define __preempt_count_inc() __preempt_count_add(1)
81433 #define __preempt_count_dec() __preempt_count_sub(1)
81434
81435 #define preempt_count_inc() preempt_count_add(1)
81436+#define raw_preempt_count_inc() raw_preempt_count_add(1)
81437 #define preempt_count_dec() preempt_count_sub(1)
81438+#define raw_preempt_count_dec() raw_preempt_count_sub(1)
81439
81440 #ifdef CONFIG_PREEMPT_COUNT
81441
81442@@ -41,6 +46,12 @@ do { \
81443 barrier(); \
81444 } while (0)
81445
81446+#define raw_preempt_disable() \
81447+do { \
81448+ raw_preempt_count_inc(); \
81449+ barrier(); \
81450+} while (0)
81451+
81452 #define sched_preempt_enable_no_resched() \
81453 do { \
81454 barrier(); \
81455@@ -49,6 +60,12 @@ do { \
81456
81457 #define preempt_enable_no_resched() sched_preempt_enable_no_resched()
81458
81459+#define raw_preempt_enable_no_resched() \
81460+do { \
81461+ barrier(); \
81462+ raw_preempt_count_dec(); \
81463+} while (0)
81464+
81465 #ifdef CONFIG_PREEMPT
81466 #define preempt_enable() \
81467 do { \
81468@@ -113,8 +130,10 @@ do { \
81469 * region.
81470 */
81471 #define preempt_disable() barrier()
81472+#define raw_preempt_disable() barrier()
81473 #define sched_preempt_enable_no_resched() barrier()
81474 #define preempt_enable_no_resched() barrier()
81475+#define raw_preempt_enable_no_resched() barrier()
81476 #define preempt_enable() barrier()
81477 #define preempt_check_resched() do { } while (0)
81478
81479@@ -128,11 +147,13 @@ do { \
81480 /*
81481 * Modules have no business playing preemption tricks.
81482 */
81483+#ifndef CONFIG_PAX_KERNEXEC
81484 #undef sched_preempt_enable_no_resched
81485 #undef preempt_enable_no_resched
81486 #undef preempt_enable_no_resched_notrace
81487 #undef preempt_check_resched
81488 #endif
81489+#endif
81490
81491 #define preempt_set_need_resched() \
81492 do { \
81493diff --git a/include/linux/printk.h b/include/linux/printk.h
81494index 8752f75..2b80c0f 100644
81495--- a/include/linux/printk.h
81496+++ b/include/linux/printk.h
81497@@ -110,6 +110,8 @@ static inline __printf(1, 2) __cold
81498 void early_printk(const char *s, ...) { }
81499 #endif
81500
81501+extern int kptr_restrict;
81502+
81503 #ifdef CONFIG_PRINTK
81504 asmlinkage __printf(5, 0)
81505 int vprintk_emit(int facility, int level,
81506@@ -144,7 +146,6 @@ extern bool printk_timed_ratelimit(unsigned long *caller_jiffies,
81507
81508 extern int printk_delay_msec;
81509 extern int dmesg_restrict;
81510-extern int kptr_restrict;
81511
81512 extern void wake_up_klogd(void);
81513
81514diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
81515index 608e60a..79cfb18 100644
81516--- a/include/linux/proc_fs.h
81517+++ b/include/linux/proc_fs.h
81518@@ -17,8 +17,11 @@ extern void proc_flush_task(struct task_struct *);
81519 extern struct proc_dir_entry *proc_symlink(const char *,
81520 struct proc_dir_entry *, const char *);
81521 extern struct proc_dir_entry *proc_mkdir(const char *, struct proc_dir_entry *);
81522+extern struct proc_dir_entry *proc_mkdir_restrict(const char *, struct proc_dir_entry *);
81523 extern struct proc_dir_entry *proc_mkdir_data(const char *, umode_t,
81524 struct proc_dir_entry *, void *);
81525+extern struct proc_dir_entry *proc_mkdir_data_restrict(const char *, umode_t,
81526+ struct proc_dir_entry *, void *);
81527 extern struct proc_dir_entry *proc_mkdir_mode(const char *, umode_t,
81528 struct proc_dir_entry *);
81529
81530@@ -34,6 +37,19 @@ static inline struct proc_dir_entry *proc_create(
81531 return proc_create_data(name, mode, parent, proc_fops, NULL);
81532 }
81533
81534+static inline struct proc_dir_entry *proc_create_grsec(const char *name, umode_t mode,
81535+ struct proc_dir_entry *parent, const struct file_operations *proc_fops)
81536+{
81537+#ifdef CONFIG_GRKERNSEC_PROC_USER
81538+ return proc_create_data(name, S_IRUSR, parent, proc_fops, NULL);
81539+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
81540+ return proc_create_data(name, S_IRUSR | S_IRGRP, parent, proc_fops, NULL);
81541+#else
81542+ return proc_create_data(name, mode, parent, proc_fops, NULL);
81543+#endif
81544+}
81545+
81546+
81547 extern void proc_set_size(struct proc_dir_entry *, loff_t);
81548 extern void proc_set_user(struct proc_dir_entry *, kuid_t, kgid_t);
81549 extern void *PDE_DATA(const struct inode *);
81550@@ -52,8 +68,12 @@ static inline struct proc_dir_entry *proc_symlink(const char *name,
81551 struct proc_dir_entry *parent,const char *dest) { return NULL;}
81552 static inline struct proc_dir_entry *proc_mkdir(const char *name,
81553 struct proc_dir_entry *parent) {return NULL;}
81554+static inline struct proc_dir_entry *proc_mkdir_restrict(const char *name,
81555+ struct proc_dir_entry *parent) { return NULL; }
81556 static inline struct proc_dir_entry *proc_mkdir_data(const char *name,
81557 umode_t mode, struct proc_dir_entry *parent, void *data) { return NULL; }
81558+static inline struct proc_dir_entry *proc_mkdir_data_restrict(const char *name,
81559+ umode_t mode, struct proc_dir_entry *parent, void *data) { return NULL; }
81560 static inline struct proc_dir_entry *proc_mkdir_mode(const char *name,
81561 umode_t mode, struct proc_dir_entry *parent) { return NULL; }
81562 #define proc_create(name, mode, parent, proc_fops) ({NULL;})
81563@@ -73,7 +93,7 @@ static inline int remove_proc_subtree(const char *name, struct proc_dir_entry *p
81564 static inline struct proc_dir_entry *proc_net_mkdir(
81565 struct net *net, const char *name, struct proc_dir_entry *parent)
81566 {
81567- return proc_mkdir_data(name, 0, parent, net);
81568+ return proc_mkdir_data_restrict(name, 0, parent, net);
81569 }
81570
81571 #endif /* _LINUX_PROC_FS_H */
81572diff --git a/include/linux/proc_ns.h b/include/linux/proc_ns.h
81573index 34a1e10..70f6bde 100644
81574--- a/include/linux/proc_ns.h
81575+++ b/include/linux/proc_ns.h
81576@@ -14,7 +14,7 @@ struct proc_ns_operations {
81577 void (*put)(void *ns);
81578 int (*install)(struct nsproxy *nsproxy, void *ns);
81579 unsigned int (*inum)(void *ns);
81580-};
81581+} __do_const __randomize_layout;
81582
81583 struct proc_ns {
81584 void *ns;
81585diff --git a/include/linux/quota.h b/include/linux/quota.h
81586index cc7494a..1e27036 100644
81587--- a/include/linux/quota.h
81588+++ b/include/linux/quota.h
81589@@ -70,7 +70,7 @@ struct kqid { /* Type in which we store the quota identifier */
81590
81591 extern bool qid_eq(struct kqid left, struct kqid right);
81592 extern bool qid_lt(struct kqid left, struct kqid right);
81593-extern qid_t from_kqid(struct user_namespace *to, struct kqid qid);
81594+extern qid_t from_kqid(struct user_namespace *to, struct kqid qid) __intentional_overflow(-1);
81595 extern qid_t from_kqid_munged(struct user_namespace *to, struct kqid qid);
81596 extern bool qid_valid(struct kqid qid);
81597
81598diff --git a/include/linux/random.h b/include/linux/random.h
81599index 57fbbff..2331f3f 100644
81600--- a/include/linux/random.h
81601+++ b/include/linux/random.h
81602@@ -9,9 +9,19 @@
81603 #include <uapi/linux/random.h>
81604
81605 extern void add_device_randomness(const void *, unsigned int);
81606+
81607+static inline void add_latent_entropy(void)
81608+{
81609+
81610+#ifdef LATENT_ENTROPY_PLUGIN
81611+ add_device_randomness((const void *)&latent_entropy, sizeof(latent_entropy));
81612+#endif
81613+
81614+}
81615+
81616 extern void add_input_randomness(unsigned int type, unsigned int code,
81617- unsigned int value);
81618-extern void add_interrupt_randomness(int irq, int irq_flags);
81619+ unsigned int value) __latent_entropy;
81620+extern void add_interrupt_randomness(int irq, int irq_flags) __latent_entropy;
81621
81622 extern void get_random_bytes(void *buf, int nbytes);
81623 extern void get_random_bytes_arch(void *buf, int nbytes);
81624@@ -22,10 +32,10 @@ extern int random_int_secret_init(void);
81625 extern const struct file_operations random_fops, urandom_fops;
81626 #endif
81627
81628-unsigned int get_random_int(void);
81629+unsigned int __intentional_overflow(-1) get_random_int(void);
81630 unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len);
81631
81632-u32 prandom_u32(void);
81633+u32 prandom_u32(void) __intentional_overflow(-1);
81634 void prandom_bytes(void *buf, int nbytes);
81635 void prandom_seed(u32 seed);
81636 void prandom_reseed_late(void);
81637@@ -37,6 +47,11 @@ struct rnd_state {
81638 u32 prandom_u32_state(struct rnd_state *state);
81639 void prandom_bytes_state(struct rnd_state *state, void *buf, int nbytes);
81640
81641+static inline unsigned long __intentional_overflow(-1) pax_get_random_long(void)
81642+{
81643+ return prandom_u32() + (sizeof(long) > 4 ? (unsigned long)prandom_u32() << 32 : 0);
81644+}
81645+
81646 /**
81647 * prandom_u32_max - returns a pseudo-random number in interval [0, ep_ro)
81648 * @ep_ro: right open interval endpoint
81649diff --git a/include/linux/rbtree_augmented.h b/include/linux/rbtree_augmented.h
81650index fea49b5..2ac22bb 100644
81651--- a/include/linux/rbtree_augmented.h
81652+++ b/include/linux/rbtree_augmented.h
81653@@ -80,7 +80,9 @@ rbname ## _rotate(struct rb_node *rb_old, struct rb_node *rb_new) \
81654 old->rbaugmented = rbcompute(old); \
81655 } \
81656 rbstatic const struct rb_augment_callbacks rbname = { \
81657- rbname ## _propagate, rbname ## _copy, rbname ## _rotate \
81658+ .propagate = rbname ## _propagate, \
81659+ .copy = rbname ## _copy, \
81660+ .rotate = rbname ## _rotate \
81661 };
81662
81663
81664diff --git a/include/linux/rculist.h b/include/linux/rculist.h
81665index 8183b46..a388711 100644
81666--- a/include/linux/rculist.h
81667+++ b/include/linux/rculist.h
81668@@ -29,8 +29,8 @@
81669 */
81670 static inline void INIT_LIST_HEAD_RCU(struct list_head *list)
81671 {
81672- ACCESS_ONCE(list->next) = list;
81673- ACCESS_ONCE(list->prev) = list;
81674+ ACCESS_ONCE_RW(list->next) = list;
81675+ ACCESS_ONCE_RW(list->prev) = list;
81676 }
81677
81678 /*
81679@@ -59,6 +59,9 @@ void __list_add_rcu(struct list_head *new,
81680 struct list_head *prev, struct list_head *next);
81681 #endif
81682
81683+void __pax_list_add_rcu(struct list_head *new,
81684+ struct list_head *prev, struct list_head *next);
81685+
81686 /**
81687 * list_add_rcu - add a new entry to rcu-protected list
81688 * @new: new entry to be added
81689@@ -80,6 +83,11 @@ static inline void list_add_rcu(struct list_head *new, struct list_head *head)
81690 __list_add_rcu(new, head, head->next);
81691 }
81692
81693+static inline void pax_list_add_rcu(struct list_head *new, struct list_head *head)
81694+{
81695+ __pax_list_add_rcu(new, head, head->next);
81696+}
81697+
81698 /**
81699 * list_add_tail_rcu - add a new entry to rcu-protected list
81700 * @new: new entry to be added
81701@@ -102,6 +110,12 @@ static inline void list_add_tail_rcu(struct list_head *new,
81702 __list_add_rcu(new, head->prev, head);
81703 }
81704
81705+static inline void pax_list_add_tail_rcu(struct list_head *new,
81706+ struct list_head *head)
81707+{
81708+ __pax_list_add_rcu(new, head->prev, head);
81709+}
81710+
81711 /**
81712 * list_del_rcu - deletes entry from list without re-initialization
81713 * @entry: the element to delete from the list.
81714@@ -132,6 +146,8 @@ static inline void list_del_rcu(struct list_head *entry)
81715 entry->prev = LIST_POISON2;
81716 }
81717
81718+extern void pax_list_del_rcu(struct list_head *entry);
81719+
81720 /**
81721 * hlist_del_init_rcu - deletes entry from hash list with re-initialization
81722 * @n: the element to delete from the hash list.
81723diff --git a/include/linux/reboot.h b/include/linux/reboot.h
81724index 48bf152..d38b785 100644
81725--- a/include/linux/reboot.h
81726+++ b/include/linux/reboot.h
81727@@ -44,9 +44,9 @@ extern int unregister_reboot_notifier(struct notifier_block *);
81728 */
81729
81730 extern void migrate_to_reboot_cpu(void);
81731-extern void machine_restart(char *cmd);
81732-extern void machine_halt(void);
81733-extern void machine_power_off(void);
81734+extern void machine_restart(char *cmd) __noreturn;
81735+extern void machine_halt(void) __noreturn;
81736+extern void machine_power_off(void) __noreturn;
81737
81738 extern void machine_shutdown(void);
81739 struct pt_regs;
81740@@ -57,9 +57,9 @@ extern void machine_crash_shutdown(struct pt_regs *);
81741 */
81742
81743 extern void kernel_restart_prepare(char *cmd);
81744-extern void kernel_restart(char *cmd);
81745-extern void kernel_halt(void);
81746-extern void kernel_power_off(void);
81747+extern void kernel_restart(char *cmd) __noreturn;
81748+extern void kernel_halt(void) __noreturn;
81749+extern void kernel_power_off(void) __noreturn;
81750
81751 extern int C_A_D; /* for sysctl */
81752 void ctrl_alt_del(void);
81753@@ -73,7 +73,7 @@ extern int orderly_poweroff(bool force);
81754 * Emergency restart, callable from an interrupt handler.
81755 */
81756
81757-extern void emergency_restart(void);
81758+extern void emergency_restart(void) __noreturn;
81759 #include <asm/emergency-restart.h>
81760
81761 #endif /* _LINUX_REBOOT_H */
81762diff --git a/include/linux/regset.h b/include/linux/regset.h
81763index 8e0c9fe..ac4d221 100644
81764--- a/include/linux/regset.h
81765+++ b/include/linux/regset.h
81766@@ -161,7 +161,8 @@ struct user_regset {
81767 unsigned int align;
81768 unsigned int bias;
81769 unsigned int core_note_type;
81770-};
81771+} __do_const;
81772+typedef struct user_regset __no_const user_regset_no_const;
81773
81774 /**
81775 * struct user_regset_view - available regsets
81776diff --git a/include/linux/relay.h b/include/linux/relay.h
81777index d7c8359..818daf5 100644
81778--- a/include/linux/relay.h
81779+++ b/include/linux/relay.h
81780@@ -157,7 +157,7 @@ struct rchan_callbacks
81781 * The callback should return 0 if successful, negative if not.
81782 */
81783 int (*remove_buf_file)(struct dentry *dentry);
81784-};
81785+} __no_const;
81786
81787 /*
81788 * CONFIG_RELAY kernel API, kernel/relay.c
81789diff --git a/include/linux/rio.h b/include/linux/rio.h
81790index 6bda06f..bf39a9b 100644
81791--- a/include/linux/rio.h
81792+++ b/include/linux/rio.h
81793@@ -358,7 +358,7 @@ struct rio_ops {
81794 int (*map_inb)(struct rio_mport *mport, dma_addr_t lstart,
81795 u64 rstart, u32 size, u32 flags);
81796 void (*unmap_inb)(struct rio_mport *mport, dma_addr_t lstart);
81797-};
81798+} __no_const;
81799
81800 #define RIO_RESOURCE_MEM 0x00000100
81801 #define RIO_RESOURCE_DOORBELL 0x00000200
81802diff --git a/include/linux/rmap.h b/include/linux/rmap.h
81803index b66c211..13d2915 100644
81804--- a/include/linux/rmap.h
81805+++ b/include/linux/rmap.h
81806@@ -145,8 +145,8 @@ static inline void anon_vma_unlock_read(struct anon_vma *anon_vma)
81807 void anon_vma_init(void); /* create anon_vma_cachep */
81808 int anon_vma_prepare(struct vm_area_struct *);
81809 void unlink_anon_vmas(struct vm_area_struct *);
81810-int anon_vma_clone(struct vm_area_struct *, struct vm_area_struct *);
81811-int anon_vma_fork(struct vm_area_struct *, struct vm_area_struct *);
81812+int anon_vma_clone(struct vm_area_struct *, const struct vm_area_struct *);
81813+int anon_vma_fork(struct vm_area_struct *, const struct vm_area_struct *);
81814
81815 static inline void anon_vma_merge(struct vm_area_struct *vma,
81816 struct vm_area_struct *next)
81817diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h
81818index a964f72..b475afb 100644
81819--- a/include/linux/scatterlist.h
81820+++ b/include/linux/scatterlist.h
81821@@ -1,6 +1,7 @@
81822 #ifndef _LINUX_SCATTERLIST_H
81823 #define _LINUX_SCATTERLIST_H
81824
81825+#include <linux/sched.h>
81826 #include <linux/string.h>
81827 #include <linux/bug.h>
81828 #include <linux/mm.h>
81829@@ -114,6 +115,12 @@ static inline void sg_set_buf(struct scatterlist *sg, const void *buf,
81830 #ifdef CONFIG_DEBUG_SG
81831 BUG_ON(!virt_addr_valid(buf));
81832 #endif
81833+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
81834+ if (object_starts_on_stack(buf)) {
81835+ void *adjbuf = buf - current->stack + current->lowmem_stack;
81836+ sg_set_page(sg, virt_to_page(adjbuf), buflen, offset_in_page(adjbuf));
81837+ } else
81838+#endif
81839 sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf));
81840 }
81841
81842diff --git a/include/linux/sched.h b/include/linux/sched.h
81843index 221b2bd..e2e5f82 100644
81844--- a/include/linux/sched.h
81845+++ b/include/linux/sched.h
81846@@ -131,6 +131,7 @@ struct fs_struct;
81847 struct perf_event_context;
81848 struct blk_plug;
81849 struct filename;
81850+struct linux_binprm;
81851
81852 #define VMACACHE_BITS 2
81853 #define VMACACHE_SIZE (1U << VMACACHE_BITS)
81854@@ -380,7 +381,7 @@ extern char __sched_text_start[], __sched_text_end[];
81855 extern int in_sched_functions(unsigned long addr);
81856
81857 #define MAX_SCHEDULE_TIMEOUT LONG_MAX
81858-extern signed long schedule_timeout(signed long timeout);
81859+extern signed long schedule_timeout(signed long timeout) __intentional_overflow(-1);
81860 extern signed long schedule_timeout_interruptible(signed long timeout);
81861 extern signed long schedule_timeout_killable(signed long timeout);
81862 extern signed long schedule_timeout_uninterruptible(signed long timeout);
81863@@ -391,6 +392,19 @@ struct nsproxy;
81864 struct user_namespace;
81865
81866 #ifdef CONFIG_MMU
81867+
81868+#ifdef CONFIG_GRKERNSEC_RAND_THREADSTACK
81869+extern unsigned long gr_rand_threadstack_offset(const struct mm_struct *mm, const struct file *filp, unsigned long flags);
81870+#else
81871+static inline unsigned long gr_rand_threadstack_offset(const struct mm_struct *mm, const struct file *filp, unsigned long flags)
81872+{
81873+ return 0;
81874+}
81875+#endif
81876+
81877+extern bool check_heap_stack_gap(const struct vm_area_struct *vma, unsigned long addr, unsigned long len, unsigned long offset);
81878+extern unsigned long skip_heap_stack_gap(const struct vm_area_struct *vma, unsigned long len, unsigned long offset);
81879+
81880 extern void arch_pick_mmap_layout(struct mm_struct *mm);
81881 extern unsigned long
81882 arch_get_unmapped_area(struct file *, unsigned long, unsigned long,
81883@@ -688,6 +702,17 @@ struct signal_struct {
81884 #ifdef CONFIG_TASKSTATS
81885 struct taskstats *stats;
81886 #endif
81887+
81888+#ifdef CONFIG_GRKERNSEC
81889+ u32 curr_ip;
81890+ u32 saved_ip;
81891+ u32 gr_saddr;
81892+ u32 gr_daddr;
81893+ u16 gr_sport;
81894+ u16 gr_dport;
81895+ u8 used_accept:1;
81896+#endif
81897+
81898 #ifdef CONFIG_AUDIT
81899 unsigned audit_tty;
81900 unsigned audit_tty_log_passwd;
81901@@ -714,7 +739,7 @@ struct signal_struct {
81902 struct mutex cred_guard_mutex; /* guard against foreign influences on
81903 * credential calculations
81904 * (notably. ptrace) */
81905-};
81906+} __randomize_layout;
81907
81908 /*
81909 * Bits in flags field of signal_struct.
81910@@ -768,6 +793,14 @@ struct user_struct {
81911 struct key *session_keyring; /* UID's default session keyring */
81912 #endif
81913
81914+#ifdef CONFIG_GRKERNSEC_KERN_LOCKOUT
81915+ unsigned char kernel_banned;
81916+#endif
81917+#ifdef CONFIG_GRKERNSEC_BRUTE
81918+ unsigned char suid_banned;
81919+ unsigned long suid_ban_expires;
81920+#endif
81921+
81922 /* Hash table maintenance information */
81923 struct hlist_node uidhash_node;
81924 kuid_t uid;
81925@@ -775,7 +808,7 @@ struct user_struct {
81926 #ifdef CONFIG_PERF_EVENTS
81927 atomic_long_t locked_vm;
81928 #endif
81929-};
81930+} __randomize_layout;
81931
81932 extern int uids_sysfs_init(void);
81933
81934@@ -1179,6 +1212,9 @@ enum perf_event_task_context {
81935 struct task_struct {
81936 volatile long state; /* -1 unrunnable, 0 runnable, >0 stopped */
81937 void *stack;
81938+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
81939+ void *lowmem_stack;
81940+#endif
81941 atomic_t usage;
81942 unsigned int flags; /* per process flags, defined below */
81943 unsigned int ptrace;
81944@@ -1304,8 +1340,8 @@ struct task_struct {
81945 struct list_head thread_node;
81946
81947 struct completion *vfork_done; /* for vfork() */
81948- int __user *set_child_tid; /* CLONE_CHILD_SETTID */
81949- int __user *clear_child_tid; /* CLONE_CHILD_CLEARTID */
81950+ pid_t __user *set_child_tid; /* CLONE_CHILD_SETTID */
81951+ pid_t __user *clear_child_tid; /* CLONE_CHILD_CLEARTID */
81952
81953 cputime_t utime, stime, utimescaled, stimescaled;
81954 cputime_t gtime;
81955@@ -1330,11 +1366,6 @@ struct task_struct {
81956 struct task_cputime cputime_expires;
81957 struct list_head cpu_timers[3];
81958
81959-/* process credentials */
81960- const struct cred __rcu *real_cred; /* objective and real subjective task
81961- * credentials (COW) */
81962- const struct cred __rcu *cred; /* effective (overridable) subjective task
81963- * credentials (COW) */
81964 char comm[TASK_COMM_LEN]; /* executable name excluding path
81965 - access with [gs]et_task_comm (which lock
81966 it with task_lock())
81967@@ -1351,6 +1382,10 @@ struct task_struct {
81968 #endif
81969 /* CPU-specific state of this task */
81970 struct thread_struct thread;
81971+/* thread_info moved to task_struct */
81972+#ifdef CONFIG_X86
81973+ struct thread_info tinfo;
81974+#endif
81975 /* filesystem information */
81976 struct fs_struct *fs;
81977 /* open file information */
81978@@ -1427,6 +1462,10 @@ struct task_struct {
81979 gfp_t lockdep_reclaim_gfp;
81980 #endif
81981
81982+/* process credentials */
81983+ const struct cred __rcu *real_cred; /* objective and real subjective task
81984+ * credentials (COW) */
81985+
81986 /* journalling filesystem info */
81987 void *journal_info;
81988
81989@@ -1465,6 +1504,10 @@ struct task_struct {
81990 /* cg_list protected by css_set_lock and tsk->alloc_lock */
81991 struct list_head cg_list;
81992 #endif
81993+
81994+ const struct cred __rcu *cred; /* effective (overridable) subjective task
81995+ * credentials (COW) */
81996+
81997 #ifdef CONFIG_FUTEX
81998 struct robust_list_head __user *robust_list;
81999 #ifdef CONFIG_COMPAT
82000@@ -1610,7 +1653,78 @@ struct task_struct {
82001 unsigned int sequential_io;
82002 unsigned int sequential_io_avg;
82003 #endif
82004-};
82005+
82006+#ifdef CONFIG_GRKERNSEC
82007+ /* grsecurity */
82008+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
82009+ u64 exec_id;
82010+#endif
82011+#ifdef CONFIG_GRKERNSEC_SETXID
82012+ const struct cred *delayed_cred;
82013+#endif
82014+ struct dentry *gr_chroot_dentry;
82015+ struct acl_subject_label *acl;
82016+ struct acl_subject_label *tmpacl;
82017+ struct acl_role_label *role;
82018+ struct file *exec_file;
82019+ unsigned long brute_expires;
82020+ u16 acl_role_id;
82021+ u8 inherited;
82022+ /* is this the task that authenticated to the special role */
82023+ u8 acl_sp_role;
82024+ u8 is_writable;
82025+ u8 brute;
82026+ u8 gr_is_chrooted;
82027+#endif
82028+
82029+} __randomize_layout;
82030+
82031+#define MF_PAX_PAGEEXEC 0x01000000 /* Paging based non-executable pages */
82032+#define MF_PAX_EMUTRAMP 0x02000000 /* Emulate trampolines */
82033+#define MF_PAX_MPROTECT 0x04000000 /* Restrict mprotect() */
82034+#define MF_PAX_RANDMMAP 0x08000000 /* Randomize mmap() base */
82035+/*#define MF_PAX_RANDEXEC 0x10000000*/ /* Randomize ET_EXEC base */
82036+#define MF_PAX_SEGMEXEC 0x20000000 /* Segmentation based non-executable pages */
82037+
82038+#ifdef CONFIG_PAX_SOFTMODE
82039+extern int pax_softmode;
82040+#endif
82041+
82042+extern int pax_check_flags(unsigned long *);
82043+#define PAX_PARSE_FLAGS_FALLBACK (~0UL)
82044+
82045+/* if tsk != current then task_lock must be held on it */
82046+#if defined(CONFIG_PAX_NOEXEC) || defined(CONFIG_PAX_ASLR)
82047+static inline unsigned long pax_get_flags(struct task_struct *tsk)
82048+{
82049+ if (likely(tsk->mm))
82050+ return tsk->mm->pax_flags;
82051+ else
82052+ return 0UL;
82053+}
82054+
82055+/* if tsk != current then task_lock must be held on it */
82056+static inline long pax_set_flags(struct task_struct *tsk, unsigned long flags)
82057+{
82058+ if (likely(tsk->mm)) {
82059+ tsk->mm->pax_flags = flags;
82060+ return 0;
82061+ }
82062+ return -EINVAL;
82063+}
82064+#endif
82065+
82066+#ifdef CONFIG_PAX_HAVE_ACL_FLAGS
82067+extern void pax_set_initial_flags(struct linux_binprm *bprm);
82068+#elif defined(CONFIG_PAX_HOOK_ACL_FLAGS)
82069+extern void (*pax_set_initial_flags_func)(struct linux_binprm *bprm);
82070+#endif
82071+
82072+struct path;
82073+extern char *pax_get_path(const struct path *path, char *buf, int buflen);
82074+extern void pax_report_fault(struct pt_regs *regs, void *pc, void *sp);
82075+extern void pax_report_insns(struct pt_regs *regs, void *pc, void *sp);
82076+extern void pax_report_refcount_overflow(struct pt_regs *regs);
82077
82078 /* Future-safe accessor for struct task_struct's cpus_allowed. */
82079 #define tsk_cpus_allowed(tsk) (&(tsk)->cpus_allowed)
82080@@ -1692,7 +1806,7 @@ struct pid_namespace;
82081 pid_t __task_pid_nr_ns(struct task_struct *task, enum pid_type type,
82082 struct pid_namespace *ns);
82083
82084-static inline pid_t task_pid_nr(struct task_struct *tsk)
82085+static inline pid_t task_pid_nr(const struct task_struct *tsk)
82086 {
82087 return tsk->pid;
82088 }
82089@@ -2039,6 +2153,25 @@ extern u64 sched_clock_cpu(int cpu);
82090
82091 extern void sched_clock_init(void);
82092
82093+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
82094+static inline void populate_stack(void)
82095+{
82096+ struct task_struct *curtask = current;
82097+ int c;
82098+ int *ptr = curtask->stack;
82099+ int *end = curtask->stack + THREAD_SIZE;
82100+
82101+ while (ptr < end) {
82102+ c = *(volatile int *)ptr;
82103+ ptr += PAGE_SIZE/sizeof(int);
82104+ }
82105+}
82106+#else
82107+static inline void populate_stack(void)
82108+{
82109+}
82110+#endif
82111+
82112 #ifndef CONFIG_HAVE_UNSTABLE_SCHED_CLOCK
82113 static inline void sched_clock_tick(void)
82114 {
82115@@ -2172,7 +2305,9 @@ void yield(void);
82116 extern struct exec_domain default_exec_domain;
82117
82118 union thread_union {
82119+#ifndef CONFIG_X86
82120 struct thread_info thread_info;
82121+#endif
82122 unsigned long stack[THREAD_SIZE/sizeof(long)];
82123 };
82124
82125@@ -2205,6 +2340,7 @@ extern struct pid_namespace init_pid_ns;
82126 */
82127
82128 extern struct task_struct *find_task_by_vpid(pid_t nr);
82129+extern struct task_struct *find_task_by_vpid_unrestricted(pid_t nr);
82130 extern struct task_struct *find_task_by_pid_ns(pid_t nr,
82131 struct pid_namespace *ns);
82132
82133@@ -2367,7 +2503,7 @@ extern void __cleanup_sighand(struct sighand_struct *);
82134 extern void exit_itimers(struct signal_struct *);
82135 extern void flush_itimer_signals(void);
82136
82137-extern void do_group_exit(int);
82138+extern __noreturn void do_group_exit(int);
82139
82140 extern int allow_signal(int);
82141 extern int disallow_signal(int);
82142@@ -2568,9 +2704,9 @@ static inline unsigned long *end_of_stack(struct task_struct *p)
82143
82144 #endif
82145
82146-static inline int object_is_on_stack(void *obj)
82147+static inline int object_starts_on_stack(const void *obj)
82148 {
82149- void *stack = task_stack_page(current);
82150+ const void *stack = task_stack_page(current);
82151
82152 return (obj >= stack) && (obj < (stack + THREAD_SIZE));
82153 }
82154diff --git a/include/linux/sched/sysctl.h b/include/linux/sched/sysctl.h
82155index 8045a55..c959cd5 100644
82156--- a/include/linux/sched/sysctl.h
82157+++ b/include/linux/sched/sysctl.h
82158@@ -30,6 +30,7 @@ enum { sysctl_hung_task_timeout_secs = 0 };
82159 #define DEFAULT_MAX_MAP_COUNT (USHRT_MAX - MAPCOUNT_ELF_CORE_MARGIN)
82160
82161 extern int sysctl_max_map_count;
82162+extern unsigned long sysctl_heap_stack_gap;
82163
82164 extern unsigned int sysctl_sched_latency;
82165 extern unsigned int sysctl_sched_min_granularity;
82166diff --git a/include/linux/security.h b/include/linux/security.h
82167index 6478ce3..5e6ad6e 100644
82168--- a/include/linux/security.h
82169+++ b/include/linux/security.h
82170@@ -27,6 +27,7 @@
82171 #include <linux/slab.h>
82172 #include <linux/err.h>
82173 #include <linux/string.h>
82174+#include <linux/grsecurity.h>
82175
82176 struct linux_binprm;
82177 struct cred;
82178@@ -116,8 +117,6 @@ struct seq_file;
82179
82180 extern int cap_netlink_send(struct sock *sk, struct sk_buff *skb);
82181
82182-void reset_security_ops(void);
82183-
82184 #ifdef CONFIG_MMU
82185 extern unsigned long mmap_min_addr;
82186 extern unsigned long dac_mmap_min_addr;
82187@@ -1719,7 +1718,7 @@ struct security_operations {
82188 struct audit_context *actx);
82189 void (*audit_rule_free) (void *lsmrule);
82190 #endif /* CONFIG_AUDIT */
82191-};
82192+} __randomize_layout;
82193
82194 /* prototypes */
82195 extern int security_init(void);
82196diff --git a/include/linux/semaphore.h b/include/linux/semaphore.h
82197index dc368b8..e895209 100644
82198--- a/include/linux/semaphore.h
82199+++ b/include/linux/semaphore.h
82200@@ -37,7 +37,7 @@ static inline void sema_init(struct semaphore *sem, int val)
82201 }
82202
82203 extern void down(struct semaphore *sem);
82204-extern int __must_check down_interruptible(struct semaphore *sem);
82205+extern int __must_check down_interruptible(struct semaphore *sem) __intentional_overflow(-1);
82206 extern int __must_check down_killable(struct semaphore *sem);
82207 extern int __must_check down_trylock(struct semaphore *sem);
82208 extern int __must_check down_timeout(struct semaphore *sem, long jiffies);
82209diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
82210index 52e0097..383f21d 100644
82211--- a/include/linux/seq_file.h
82212+++ b/include/linux/seq_file.h
82213@@ -27,6 +27,9 @@ struct seq_file {
82214 struct mutex lock;
82215 const struct seq_operations *op;
82216 int poll_event;
82217+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
82218+ u64 exec_id;
82219+#endif
82220 #ifdef CONFIG_USER_NS
82221 struct user_namespace *user_ns;
82222 #endif
82223@@ -39,6 +42,7 @@ struct seq_operations {
82224 void * (*next) (struct seq_file *m, void *v, loff_t *pos);
82225 int (*show) (struct seq_file *m, void *v);
82226 };
82227+typedef struct seq_operations __no_const seq_operations_no_const;
82228
82229 #define SEQ_SKIP 1
82230
82231@@ -96,6 +100,7 @@ void seq_pad(struct seq_file *m, char c);
82232
82233 char *mangle_path(char *s, const char *p, const char *esc);
82234 int seq_open(struct file *, const struct seq_operations *);
82235+int seq_open_restrict(struct file *, const struct seq_operations *);
82236 ssize_t seq_read(struct file *, char __user *, size_t, loff_t *);
82237 loff_t seq_lseek(struct file *, loff_t, int);
82238 int seq_release(struct inode *, struct file *);
82239@@ -138,6 +143,7 @@ static inline int seq_nodemask_list(struct seq_file *m, nodemask_t *mask)
82240 }
82241
82242 int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
82243+int single_open_restrict(struct file *, int (*)(struct seq_file *, void *), void *);
82244 int single_open_size(struct file *, int (*)(struct seq_file *, void *), void *, size_t);
82245 int single_release(struct inode *, struct file *);
82246 void *__seq_open_private(struct file *, const struct seq_operations *, int);
82247diff --git a/include/linux/shm.h b/include/linux/shm.h
82248index 1e2cd2e..0288750 100644
82249--- a/include/linux/shm.h
82250+++ b/include/linux/shm.h
82251@@ -21,6 +21,10 @@ struct shmid_kernel /* private to the kernel */
82252
82253 /* The task created the shm object. NULL if the task is dead. */
82254 struct task_struct *shm_creator;
82255+#ifdef CONFIG_GRKERNSEC
82256+ time_t shm_createtime;
82257+ pid_t shm_lapid;
82258+#endif
82259 };
82260
82261 /* shm_mode upper byte flags */
82262diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
82263index 08074a8..e2ae280 100644
82264--- a/include/linux/skbuff.h
82265+++ b/include/linux/skbuff.h
82266@@ -717,7 +717,7 @@ bool skb_try_coalesce(struct sk_buff *to, struct sk_buff *from,
82267 struct sk_buff *__alloc_skb(unsigned int size, gfp_t priority, int flags,
82268 int node);
82269 struct sk_buff *build_skb(void *data, unsigned int frag_size);
82270-static inline struct sk_buff *alloc_skb(unsigned int size,
82271+static inline struct sk_buff * __intentional_overflow(0) alloc_skb(unsigned int size,
82272 gfp_t priority)
82273 {
82274 return __alloc_skb(size, priority, 0, NUMA_NO_NODE);
82275@@ -1825,7 +1825,7 @@ static inline u32 skb_inner_network_header_len(const struct sk_buff *skb)
82276 return skb->inner_transport_header - skb->inner_network_header;
82277 }
82278
82279-static inline int skb_network_offset(const struct sk_buff *skb)
82280+static inline int __intentional_overflow(0) skb_network_offset(const struct sk_buff *skb)
82281 {
82282 return skb_network_header(skb) - skb->data;
82283 }
82284@@ -1885,7 +1885,7 @@ static inline int pskb_network_may_pull(struct sk_buff *skb, unsigned int len)
82285 * NET_IP_ALIGN(2) + ethernet_header(14) + IP_header(20/40) + ports(8)
82286 */
82287 #ifndef NET_SKB_PAD
82288-#define NET_SKB_PAD max(32, L1_CACHE_BYTES)
82289+#define NET_SKB_PAD max(_AC(32,UL), L1_CACHE_BYTES)
82290 #endif
82291
82292 int ___pskb_trim(struct sk_buff *skb, unsigned int len);
82293@@ -2484,7 +2484,7 @@ struct sk_buff *skb_recv_datagram(struct sock *sk, unsigned flags, int noblock,
82294 int *err);
82295 unsigned int datagram_poll(struct file *file, struct socket *sock,
82296 struct poll_table_struct *wait);
82297-int skb_copy_datagram_iovec(const struct sk_buff *from, int offset,
82298+int __intentional_overflow(0) skb_copy_datagram_iovec(const struct sk_buff *from, int offset,
82299 struct iovec *to, int size);
82300 int skb_copy_and_csum_datagram_iovec(struct sk_buff *skb, int hlen,
82301 struct iovec *iov);
82302@@ -2776,6 +2776,9 @@ static inline void nf_reset(struct sk_buff *skb)
82303 nf_bridge_put(skb->nf_bridge);
82304 skb->nf_bridge = NULL;
82305 #endif
82306+#if IS_ENABLED(CONFIG_NETFILTER_XT_TARGET_TRACE)
82307+ skb->nf_trace = 0;
82308+#endif
82309 }
82310
82311 static inline void nf_reset_trace(struct sk_buff *skb)
82312diff --git a/include/linux/slab.h b/include/linux/slab.h
82313index 307bfbe..a999cf3 100644
82314--- a/include/linux/slab.h
82315+++ b/include/linux/slab.h
82316@@ -14,15 +14,29 @@
82317 #include <linux/gfp.h>
82318 #include <linux/types.h>
82319 #include <linux/workqueue.h>
82320-
82321+#include <linux/err.h>
82322
82323 /*
82324 * Flags to pass to kmem_cache_create().
82325 * The ones marked DEBUG are only valid if CONFIG_SLAB_DEBUG is set.
82326 */
82327 #define SLAB_DEBUG_FREE 0x00000100UL /* DEBUG: Perform (expensive) checks on free */
82328+
82329+#ifdef CONFIG_PAX_USERCOPY_SLABS
82330+#define SLAB_USERCOPY 0x00000200UL /* PaX: Allow copying objs to/from userland */
82331+#else
82332+#define SLAB_USERCOPY 0x00000000UL
82333+#endif
82334+
82335 #define SLAB_RED_ZONE 0x00000400UL /* DEBUG: Red zone objs in a cache */
82336 #define SLAB_POISON 0x00000800UL /* DEBUG: Poison objects */
82337+
82338+#ifdef CONFIG_PAX_MEMORY_SANITIZE
82339+#define SLAB_NO_SANITIZE 0x00001000UL /* PaX: Do not sanitize objs on free */
82340+#else
82341+#define SLAB_NO_SANITIZE 0x00000000UL
82342+#endif
82343+
82344 #define SLAB_HWCACHE_ALIGN 0x00002000UL /* Align objs on cache lines */
82345 #define SLAB_CACHE_DMA 0x00004000UL /* Use GFP_DMA memory */
82346 #define SLAB_STORE_USER 0x00010000UL /* DEBUG: Store the last owner for bug hunting */
82347@@ -98,10 +112,13 @@
82348 * ZERO_SIZE_PTR can be passed to kfree though in the same way that NULL can.
82349 * Both make kfree a no-op.
82350 */
82351-#define ZERO_SIZE_PTR ((void *)16)
82352+#define ZERO_SIZE_PTR \
82353+({ \
82354+ BUILD_BUG_ON(!(MAX_ERRNO & ~PAGE_MASK));\
82355+ (void *)(-MAX_ERRNO-1L); \
82356+})
82357
82358-#define ZERO_OR_NULL_PTR(x) ((unsigned long)(x) <= \
82359- (unsigned long)ZERO_SIZE_PTR)
82360+#define ZERO_OR_NULL_PTR(x) ((unsigned long)(x) - 1 >= (unsigned long)ZERO_SIZE_PTR - 1)
82361
82362 #include <linux/kmemleak.h>
82363
82364@@ -142,6 +159,8 @@ void * __must_check krealloc(const void *, size_t, gfp_t);
82365 void kfree(const void *);
82366 void kzfree(const void *);
82367 size_t ksize(const void *);
82368+const char *check_heap_object(const void *ptr, unsigned long n);
82369+bool is_usercopy_object(const void *ptr);
82370
82371 /*
82372 * Some archs want to perform DMA into kmalloc caches and need a guaranteed
82373@@ -174,7 +193,7 @@ struct kmem_cache {
82374 unsigned int align; /* Alignment as calculated */
82375 unsigned long flags; /* Active flags on the slab */
82376 const char *name; /* Slab name for sysfs */
82377- int refcount; /* Use counter */
82378+ atomic_t refcount; /* Use counter */
82379 void (*ctor)(void *); /* Called on object slot creation */
82380 struct list_head list; /* List of all slab caches on the system */
82381 };
82382@@ -259,6 +278,10 @@ extern struct kmem_cache *kmalloc_caches[KMALLOC_SHIFT_HIGH + 1];
82383 extern struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1];
82384 #endif
82385
82386+#ifdef CONFIG_PAX_USERCOPY_SLABS
82387+extern struct kmem_cache *kmalloc_usercopy_caches[KMALLOC_SHIFT_HIGH + 1];
82388+#endif
82389+
82390 /*
82391 * Figure out which kmalloc slab an allocation of a certain size
82392 * belongs to.
82393@@ -267,7 +290,7 @@ extern struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1];
82394 * 2 = 120 .. 192 bytes
82395 * n = 2^(n-1) .. 2^n -1
82396 */
82397-static __always_inline int kmalloc_index(size_t size)
82398+static __always_inline __size_overflow(1) int kmalloc_index(size_t size)
82399 {
82400 if (!size)
82401 return 0;
82402@@ -310,11 +333,11 @@ static __always_inline int kmalloc_index(size_t size)
82403 }
82404 #endif /* !CONFIG_SLOB */
82405
82406-void *__kmalloc(size_t size, gfp_t flags);
82407+void *__kmalloc(size_t size, gfp_t flags) __alloc_size(1);
82408 void *kmem_cache_alloc(struct kmem_cache *, gfp_t flags);
82409
82410 #ifdef CONFIG_NUMA
82411-void *__kmalloc_node(size_t size, gfp_t flags, int node);
82412+void *__kmalloc_node(size_t size, gfp_t flags, int node) __alloc_size(1);
82413 void *kmem_cache_alloc_node(struct kmem_cache *, gfp_t flags, int node);
82414 #else
82415 static __always_inline void *__kmalloc_node(size_t size, gfp_t flags, int node)
82416diff --git a/include/linux/slab_def.h b/include/linux/slab_def.h
82417index 8235dfb..47ce586 100644
82418--- a/include/linux/slab_def.h
82419+++ b/include/linux/slab_def.h
82420@@ -38,7 +38,7 @@ struct kmem_cache {
82421 /* 4) cache creation/removal */
82422 const char *name;
82423 struct list_head list;
82424- int refcount;
82425+ atomic_t refcount;
82426 int object_size;
82427 int align;
82428
82429@@ -54,10 +54,14 @@ struct kmem_cache {
82430 unsigned long node_allocs;
82431 unsigned long node_frees;
82432 unsigned long node_overflow;
82433- atomic_t allochit;
82434- atomic_t allocmiss;
82435- atomic_t freehit;
82436- atomic_t freemiss;
82437+ atomic_unchecked_t allochit;
82438+ atomic_unchecked_t allocmiss;
82439+ atomic_unchecked_t freehit;
82440+ atomic_unchecked_t freemiss;
82441+#ifdef CONFIG_PAX_MEMORY_SANITIZE
82442+ atomic_unchecked_t sanitized;
82443+ atomic_unchecked_t not_sanitized;
82444+#endif
82445
82446 /*
82447 * If debugging is enabled, then the allocator can add additional
82448diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
82449index d82abd4..408c3a0 100644
82450--- a/include/linux/slub_def.h
82451+++ b/include/linux/slub_def.h
82452@@ -74,7 +74,7 @@ struct kmem_cache {
82453 struct kmem_cache_order_objects max;
82454 struct kmem_cache_order_objects min;
82455 gfp_t allocflags; /* gfp flags to use on each alloc */
82456- int refcount; /* Refcount for slab cache destroy */
82457+ atomic_t refcount; /* Refcount for slab cache destroy */
82458 void (*ctor)(void *);
82459 int inuse; /* Offset to metadata */
82460 int align; /* Alignment */
82461diff --git a/include/linux/smp.h b/include/linux/smp.h
82462index 633f5ed..6c3dc3f 100644
82463--- a/include/linux/smp.h
82464+++ b/include/linux/smp.h
82465@@ -176,7 +176,9 @@ static inline void kick_all_cpus_sync(void) { }
82466 #endif
82467
82468 #define get_cpu() ({ preempt_disable(); smp_processor_id(); })
82469+#define raw_get_cpu() ({ raw_preempt_disable(); raw_smp_processor_id(); })
82470 #define put_cpu() preempt_enable()
82471+#define raw_put_cpu_no_resched() raw_preempt_enable_no_resched()
82472
82473 /*
82474 * Callback to arch code if there's nosmp or maxcpus=0 on the
82475diff --git a/include/linux/sock_diag.h b/include/linux/sock_diag.h
82476index 46cca4c..3323536 100644
82477--- a/include/linux/sock_diag.h
82478+++ b/include/linux/sock_diag.h
82479@@ -11,7 +11,7 @@ struct sock;
82480 struct sock_diag_handler {
82481 __u8 family;
82482 int (*dump)(struct sk_buff *skb, struct nlmsghdr *nlh);
82483-};
82484+} __do_const;
82485
82486 int sock_diag_register(const struct sock_diag_handler *h);
82487 void sock_diag_unregister(const struct sock_diag_handler *h);
82488diff --git a/include/linux/sonet.h b/include/linux/sonet.h
82489index 680f9a3..f13aeb0 100644
82490--- a/include/linux/sonet.h
82491+++ b/include/linux/sonet.h
82492@@ -7,7 +7,7 @@
82493 #include <uapi/linux/sonet.h>
82494
82495 struct k_sonet_stats {
82496-#define __HANDLE_ITEM(i) atomic_t i
82497+#define __HANDLE_ITEM(i) atomic_unchecked_t i
82498 __SONET_ITEMS
82499 #undef __HANDLE_ITEM
82500 };
82501diff --git a/include/linux/sunrpc/addr.h b/include/linux/sunrpc/addr.h
82502index 07d8e53..dc934c9 100644
82503--- a/include/linux/sunrpc/addr.h
82504+++ b/include/linux/sunrpc/addr.h
82505@@ -23,9 +23,9 @@ static inline unsigned short rpc_get_port(const struct sockaddr *sap)
82506 {
82507 switch (sap->sa_family) {
82508 case AF_INET:
82509- return ntohs(((struct sockaddr_in *)sap)->sin_port);
82510+ return ntohs(((const struct sockaddr_in *)sap)->sin_port);
82511 case AF_INET6:
82512- return ntohs(((struct sockaddr_in6 *)sap)->sin6_port);
82513+ return ntohs(((const struct sockaddr_in6 *)sap)->sin6_port);
82514 }
82515 return 0;
82516 }
82517@@ -58,7 +58,7 @@ static inline bool __rpc_cmp_addr4(const struct sockaddr *sap1,
82518 static inline bool __rpc_copy_addr4(struct sockaddr *dst,
82519 const struct sockaddr *src)
82520 {
82521- const struct sockaddr_in *ssin = (struct sockaddr_in *) src;
82522+ const struct sockaddr_in *ssin = (const struct sockaddr_in *) src;
82523 struct sockaddr_in *dsin = (struct sockaddr_in *) dst;
82524
82525 dsin->sin_family = ssin->sin_family;
82526@@ -164,7 +164,7 @@ static inline u32 rpc_get_scope_id(const struct sockaddr *sa)
82527 if (sa->sa_family != AF_INET6)
82528 return 0;
82529
82530- return ((struct sockaddr_in6 *) sa)->sin6_scope_id;
82531+ return ((const struct sockaddr_in6 *) sa)->sin6_scope_id;
82532 }
82533
82534 #endif /* _LINUX_SUNRPC_ADDR_H */
82535diff --git a/include/linux/sunrpc/clnt.h b/include/linux/sunrpc/clnt.h
82536index 70736b9..37f33db 100644
82537--- a/include/linux/sunrpc/clnt.h
82538+++ b/include/linux/sunrpc/clnt.h
82539@@ -97,7 +97,7 @@ struct rpc_procinfo {
82540 unsigned int p_timer; /* Which RTT timer to use */
82541 u32 p_statidx; /* Which procedure to account */
82542 const char * p_name; /* name of procedure */
82543-};
82544+} __do_const;
82545
82546 #ifdef __KERNEL__
82547
82548diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
82549index 04e7632..2e2a8a3 100644
82550--- a/include/linux/sunrpc/svc.h
82551+++ b/include/linux/sunrpc/svc.h
82552@@ -412,7 +412,7 @@ struct svc_procedure {
82553 unsigned int pc_count; /* call count */
82554 unsigned int pc_cachetype; /* cache info (NFS) */
82555 unsigned int pc_xdrressize; /* maximum size of XDR reply */
82556-};
82557+} __do_const;
82558
82559 /*
82560 * Function prototypes.
82561diff --git a/include/linux/sunrpc/svc_rdma.h b/include/linux/sunrpc/svc_rdma.h
82562index 0b8e3e6..33e0a01 100644
82563--- a/include/linux/sunrpc/svc_rdma.h
82564+++ b/include/linux/sunrpc/svc_rdma.h
82565@@ -53,15 +53,15 @@ extern unsigned int svcrdma_ord;
82566 extern unsigned int svcrdma_max_requests;
82567 extern unsigned int svcrdma_max_req_size;
82568
82569-extern atomic_t rdma_stat_recv;
82570-extern atomic_t rdma_stat_read;
82571-extern atomic_t rdma_stat_write;
82572-extern atomic_t rdma_stat_sq_starve;
82573-extern atomic_t rdma_stat_rq_starve;
82574-extern atomic_t rdma_stat_rq_poll;
82575-extern atomic_t rdma_stat_rq_prod;
82576-extern atomic_t rdma_stat_sq_poll;
82577-extern atomic_t rdma_stat_sq_prod;
82578+extern atomic_unchecked_t rdma_stat_recv;
82579+extern atomic_unchecked_t rdma_stat_read;
82580+extern atomic_unchecked_t rdma_stat_write;
82581+extern atomic_unchecked_t rdma_stat_sq_starve;
82582+extern atomic_unchecked_t rdma_stat_rq_starve;
82583+extern atomic_unchecked_t rdma_stat_rq_poll;
82584+extern atomic_unchecked_t rdma_stat_rq_prod;
82585+extern atomic_unchecked_t rdma_stat_sq_poll;
82586+extern atomic_unchecked_t rdma_stat_sq_prod;
82587
82588 #define RPCRDMA_VERSION 1
82589
82590diff --git a/include/linux/sunrpc/svcauth.h b/include/linux/sunrpc/svcauth.h
82591index 8d71d65..f79586e 100644
82592--- a/include/linux/sunrpc/svcauth.h
82593+++ b/include/linux/sunrpc/svcauth.h
82594@@ -120,7 +120,7 @@ struct auth_ops {
82595 int (*release)(struct svc_rqst *rq);
82596 void (*domain_release)(struct auth_domain *);
82597 int (*set_client)(struct svc_rqst *rq);
82598-};
82599+} __do_const;
82600
82601 #define SVC_GARBAGE 1
82602 #define SVC_SYSERR 2
82603diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
82604index a5ffd32..0935dea 100644
82605--- a/include/linux/swiotlb.h
82606+++ b/include/linux/swiotlb.h
82607@@ -60,7 +60,8 @@ extern void
82608
82609 extern void
82610 swiotlb_free_coherent(struct device *hwdev, size_t size,
82611- void *vaddr, dma_addr_t dma_handle);
82612+ void *vaddr, dma_addr_t dma_handle,
82613+ struct dma_attrs *attrs);
82614
82615 extern dma_addr_t swiotlb_map_page(struct device *dev, struct page *page,
82616 unsigned long offset, size_t size,
82617diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
82618index a4a0588..752870e 100644
82619--- a/include/linux/syscalls.h
82620+++ b/include/linux/syscalls.h
82621@@ -98,10 +98,16 @@ struct sigaltstack;
82622 #define __MAP(n,...) __MAP##n(__VA_ARGS__)
82623
82624 #define __SC_DECL(t, a) t a
82625+#define __TYPE_IS_U(t) (__same_type((t)0, 0UL) || __same_type((t)0, 0U) || __same_type((t)0, (unsigned short)0) || __same_type((t)0, (unsigned char)0))
82626 #define __TYPE_IS_L(t) (__same_type((t)0, 0L))
82627 #define __TYPE_IS_UL(t) (__same_type((t)0, 0UL))
82628 #define __TYPE_IS_LL(t) (__same_type((t)0, 0LL) || __same_type((t)0, 0ULL))
82629-#define __SC_LONG(t, a) __typeof(__builtin_choose_expr(__TYPE_IS_LL(t), 0LL, 0L)) a
82630+#define __SC_LONG(t, a) __typeof( \
82631+ __builtin_choose_expr( \
82632+ sizeof(t) > sizeof(int), \
82633+ (t) 0, \
82634+ __builtin_choose_expr(__TYPE_IS_U(t), 0UL, 0L) \
82635+ )) a
82636 #define __SC_CAST(t, a) (t) a
82637 #define __SC_ARGS(t, a) a
82638 #define __SC_TEST(t, a) (void)BUILD_BUG_ON_ZERO(!__TYPE_IS_LL(t) && sizeof(t) > sizeof(long))
82639@@ -379,11 +385,11 @@ asmlinkage long sys_sync(void);
82640 asmlinkage long sys_fsync(unsigned int fd);
82641 asmlinkage long sys_fdatasync(unsigned int fd);
82642 asmlinkage long sys_bdflush(int func, long data);
82643-asmlinkage long sys_mount(char __user *dev_name, char __user *dir_name,
82644- char __user *type, unsigned long flags,
82645+asmlinkage long sys_mount(const char __user *dev_name, const char __user *dir_name,
82646+ const char __user *type, unsigned long flags,
82647 void __user *data);
82648-asmlinkage long sys_umount(char __user *name, int flags);
82649-asmlinkage long sys_oldumount(char __user *name);
82650+asmlinkage long sys_umount(const char __user *name, int flags);
82651+asmlinkage long sys_oldumount(const char __user *name);
82652 asmlinkage long sys_truncate(const char __user *path, long length);
82653 asmlinkage long sys_ftruncate(unsigned int fd, unsigned long length);
82654 asmlinkage long sys_stat(const char __user *filename,
82655@@ -595,7 +601,7 @@ asmlinkage long sys_getsockname(int, struct sockaddr __user *, int __user *);
82656 asmlinkage long sys_getpeername(int, struct sockaddr __user *, int __user *);
82657 asmlinkage long sys_send(int, void __user *, size_t, unsigned);
82658 asmlinkage long sys_sendto(int, void __user *, size_t, unsigned,
82659- struct sockaddr __user *, int);
82660+ struct sockaddr __user *, int) __intentional_overflow(0);
82661 asmlinkage long sys_sendmsg(int fd, struct msghdr __user *msg, unsigned flags);
82662 asmlinkage long sys_sendmmsg(int fd, struct mmsghdr __user *msg,
82663 unsigned int vlen, unsigned flags);
82664diff --git a/include/linux/syscore_ops.h b/include/linux/syscore_ops.h
82665index 27b3b0b..e093dd9 100644
82666--- a/include/linux/syscore_ops.h
82667+++ b/include/linux/syscore_ops.h
82668@@ -16,7 +16,7 @@ struct syscore_ops {
82669 int (*suspend)(void);
82670 void (*resume)(void);
82671 void (*shutdown)(void);
82672-};
82673+} __do_const;
82674
82675 extern void register_syscore_ops(struct syscore_ops *ops);
82676 extern void unregister_syscore_ops(struct syscore_ops *ops);
82677diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
82678index 14a8ff2..fa95f3a 100644
82679--- a/include/linux/sysctl.h
82680+++ b/include/linux/sysctl.h
82681@@ -34,13 +34,13 @@ struct ctl_table_root;
82682 struct ctl_table_header;
82683 struct ctl_dir;
82684
82685-typedef struct ctl_table ctl_table;
82686-
82687 typedef int proc_handler (struct ctl_table *ctl, int write,
82688 void __user *buffer, size_t *lenp, loff_t *ppos);
82689
82690 extern int proc_dostring(struct ctl_table *, int,
82691 void __user *, size_t *, loff_t *);
82692+extern int proc_dostring_modpriv(struct ctl_table *, int,
82693+ void __user *, size_t *, loff_t *);
82694 extern int proc_dointvec(struct ctl_table *, int,
82695 void __user *, size_t *, loff_t *);
82696 extern int proc_dointvec_minmax(struct ctl_table *, int,
82697@@ -115,7 +115,9 @@ struct ctl_table
82698 struct ctl_table_poll *poll;
82699 void *extra1;
82700 void *extra2;
82701-};
82702+} __do_const __randomize_layout;
82703+typedef struct ctl_table __no_const ctl_table_no_const;
82704+typedef struct ctl_table ctl_table;
82705
82706 struct ctl_node {
82707 struct rb_node node;
82708diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
82709index 5ffaa34..fe3e31c 100644
82710--- a/include/linux/sysfs.h
82711+++ b/include/linux/sysfs.h
82712@@ -34,7 +34,8 @@ struct attribute {
82713 struct lock_class_key *key;
82714 struct lock_class_key skey;
82715 #endif
82716-};
82717+} __do_const;
82718+typedef struct attribute __no_const attribute_no_const;
82719
82720 /**
82721 * sysfs_attr_init - initialize a dynamically allocated sysfs attribute
82722@@ -63,7 +64,8 @@ struct attribute_group {
82723 struct attribute *, int);
82724 struct attribute **attrs;
82725 struct bin_attribute **bin_attrs;
82726-};
82727+} __do_const;
82728+typedef struct attribute_group __no_const attribute_group_no_const;
82729
82730 /**
82731 * Use these macros to make defining attributes easier. See include/linux/device.h
82732@@ -128,7 +130,8 @@ struct bin_attribute {
82733 char *, loff_t, size_t);
82734 int (*mmap)(struct file *, struct kobject *, struct bin_attribute *attr,
82735 struct vm_area_struct *vma);
82736-};
82737+} __do_const;
82738+typedef struct bin_attribute __no_const bin_attribute_no_const;
82739
82740 /**
82741 * sysfs_bin_attr_init - initialize a dynamically allocated bin_attribute
82742diff --git a/include/linux/sysrq.h b/include/linux/sysrq.h
82743index 387fa7d..3fcde6b 100644
82744--- a/include/linux/sysrq.h
82745+++ b/include/linux/sysrq.h
82746@@ -16,6 +16,7 @@
82747
82748 #include <linux/errno.h>
82749 #include <linux/types.h>
82750+#include <linux/compiler.h>
82751
82752 /* Possible values of bitmask for enabling sysrq functions */
82753 /* 0x0001 is reserved for enable everything */
82754@@ -33,7 +34,7 @@ struct sysrq_key_op {
82755 char *help_msg;
82756 char *action_msg;
82757 int enable_mask;
82758-};
82759+} __do_const;
82760
82761 #ifdef CONFIG_MAGIC_SYSRQ
82762
82763diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
82764index fddbe20..a0e76ab 100644
82765--- a/include/linux/thread_info.h
82766+++ b/include/linux/thread_info.h
82767@@ -161,6 +161,13 @@ static inline bool test_and_clear_restore_sigmask(void)
82768 #error "no set_restore_sigmask() provided and default one won't work"
82769 #endif
82770
82771+extern void __check_object_size(const void *ptr, unsigned long n, bool to_user, bool const_size);
82772+
82773+static inline void check_object_size(const void *ptr, unsigned long n, bool to_user)
82774+{
82775+ __check_object_size(ptr, n, to_user, __builtin_constant_p(n));
82776+}
82777+
82778 #endif /* __KERNEL__ */
82779
82780 #endif /* _LINUX_THREAD_INFO_H */
82781diff --git a/include/linux/tty.h b/include/linux/tty.h
82782index 1c3316a..ae83b9f 100644
82783--- a/include/linux/tty.h
82784+++ b/include/linux/tty.h
82785@@ -202,7 +202,7 @@ struct tty_port {
82786 const struct tty_port_operations *ops; /* Port operations */
82787 spinlock_t lock; /* Lock protecting tty field */
82788 int blocked_open; /* Waiting to open */
82789- int count; /* Usage count */
82790+ atomic_t count; /* Usage count */
82791 wait_queue_head_t open_wait; /* Open waiters */
82792 wait_queue_head_t close_wait; /* Close waiters */
82793 wait_queue_head_t delta_msr_wait; /* Modem status change */
82794@@ -284,7 +284,7 @@ struct tty_struct {
82795 /* If the tty has a pending do_SAK, queue it here - akpm */
82796 struct work_struct SAK_work;
82797 struct tty_port *port;
82798-};
82799+} __randomize_layout;
82800
82801 /* Each of a tty's open files has private_data pointing to tty_file_private */
82802 struct tty_file_private {
82803@@ -550,7 +550,7 @@ extern int tty_port_open(struct tty_port *port,
82804 struct tty_struct *tty, struct file *filp);
82805 static inline int tty_port_users(struct tty_port *port)
82806 {
82807- return port->count + port->blocked_open;
82808+ return atomic_read(&port->count) + port->blocked_open;
82809 }
82810
82811 extern int tty_register_ldisc(int disc, struct tty_ldisc_ops *new_ldisc);
82812diff --git a/include/linux/tty_driver.h b/include/linux/tty_driver.h
82813index 756a609..89db85e 100644
82814--- a/include/linux/tty_driver.h
82815+++ b/include/linux/tty_driver.h
82816@@ -285,7 +285,7 @@ struct tty_operations {
82817 void (*poll_put_char)(struct tty_driver *driver, int line, char ch);
82818 #endif
82819 const struct file_operations *proc_fops;
82820-};
82821+} __do_const __randomize_layout;
82822
82823 struct tty_driver {
82824 int magic; /* magic number for this structure */
82825@@ -319,7 +319,7 @@ struct tty_driver {
82826
82827 const struct tty_operations *ops;
82828 struct list_head tty_drivers;
82829-};
82830+} __randomize_layout;
82831
82832 extern struct list_head tty_drivers;
82833
82834diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h
82835index add26da..22c00bef 100644
82836--- a/include/linux/tty_ldisc.h
82837+++ b/include/linux/tty_ldisc.h
82838@@ -212,7 +212,7 @@ struct tty_ldisc_ops {
82839
82840 struct module *owner;
82841
82842- int refcount;
82843+ atomic_t refcount;
82844 };
82845
82846 struct tty_ldisc {
82847diff --git a/include/linux/types.h b/include/linux/types.h
82848index 4d118ba..c3ee9bf 100644
82849--- a/include/linux/types.h
82850+++ b/include/linux/types.h
82851@@ -176,10 +176,26 @@ typedef struct {
82852 int counter;
82853 } atomic_t;
82854
82855+#ifdef CONFIG_PAX_REFCOUNT
82856+typedef struct {
82857+ int counter;
82858+} atomic_unchecked_t;
82859+#else
82860+typedef atomic_t atomic_unchecked_t;
82861+#endif
82862+
82863 #ifdef CONFIG_64BIT
82864 typedef struct {
82865 long counter;
82866 } atomic64_t;
82867+
82868+#ifdef CONFIG_PAX_REFCOUNT
82869+typedef struct {
82870+ long counter;
82871+} atomic64_unchecked_t;
82872+#else
82873+typedef atomic64_t atomic64_unchecked_t;
82874+#endif
82875 #endif
82876
82877 struct list_head {
82878diff --git a/include/linux/uaccess.h b/include/linux/uaccess.h
82879index ecd3319..8a36ded 100644
82880--- a/include/linux/uaccess.h
82881+++ b/include/linux/uaccess.h
82882@@ -75,11 +75,11 @@ static inline unsigned long __copy_from_user_nocache(void *to,
82883 long ret; \
82884 mm_segment_t old_fs = get_fs(); \
82885 \
82886- set_fs(KERNEL_DS); \
82887 pagefault_disable(); \
82888- ret = __copy_from_user_inatomic(&(retval), (__force typeof(retval) __user *)(addr), sizeof(retval)); \
82889- pagefault_enable(); \
82890+ set_fs(KERNEL_DS); \
82891+ ret = __copy_from_user_inatomic(&(retval), (typeof(retval) __force_user *)(addr), sizeof(retval)); \
82892 set_fs(old_fs); \
82893+ pagefault_enable(); \
82894 ret; \
82895 })
82896
82897diff --git a/include/linux/uidgid.h b/include/linux/uidgid.h
82898index 2d1f9b6..d7a9fce 100644
82899--- a/include/linux/uidgid.h
82900+++ b/include/linux/uidgid.h
82901@@ -175,4 +175,9 @@ static inline bool kgid_has_mapping(struct user_namespace *ns, kgid_t gid)
82902
82903 #endif /* CONFIG_USER_NS */
82904
82905+#define GR_GLOBAL_UID(x) from_kuid_munged(&init_user_ns, (x))
82906+#define GR_GLOBAL_GID(x) from_kgid_munged(&init_user_ns, (x))
82907+#define gr_is_global_root(x) uid_eq((x), GLOBAL_ROOT_UID)
82908+#define gr_is_global_nonroot(x) (!uid_eq((x), GLOBAL_ROOT_UID))
82909+
82910 #endif /* _LINUX_UIDGID_H */
82911diff --git a/include/linux/unaligned/access_ok.h b/include/linux/unaligned/access_ok.h
82912index 99c1b4d..562e6f3 100644
82913--- a/include/linux/unaligned/access_ok.h
82914+++ b/include/linux/unaligned/access_ok.h
82915@@ -4,34 +4,34 @@
82916 #include <linux/kernel.h>
82917 #include <asm/byteorder.h>
82918
82919-static inline u16 get_unaligned_le16(const void *p)
82920+static inline u16 __intentional_overflow(-1) get_unaligned_le16(const void *p)
82921 {
82922- return le16_to_cpup((__le16 *)p);
82923+ return le16_to_cpup((const __le16 *)p);
82924 }
82925
82926-static inline u32 get_unaligned_le32(const void *p)
82927+static inline u32 __intentional_overflow(-1) get_unaligned_le32(const void *p)
82928 {
82929- return le32_to_cpup((__le32 *)p);
82930+ return le32_to_cpup((const __le32 *)p);
82931 }
82932
82933-static inline u64 get_unaligned_le64(const void *p)
82934+static inline u64 __intentional_overflow(-1) get_unaligned_le64(const void *p)
82935 {
82936- return le64_to_cpup((__le64 *)p);
82937+ return le64_to_cpup((const __le64 *)p);
82938 }
82939
82940-static inline u16 get_unaligned_be16(const void *p)
82941+static inline u16 __intentional_overflow(-1) get_unaligned_be16(const void *p)
82942 {
82943- return be16_to_cpup((__be16 *)p);
82944+ return be16_to_cpup((const __be16 *)p);
82945 }
82946
82947-static inline u32 get_unaligned_be32(const void *p)
82948+static inline u32 __intentional_overflow(-1) get_unaligned_be32(const void *p)
82949 {
82950- return be32_to_cpup((__be32 *)p);
82951+ return be32_to_cpup((const __be32 *)p);
82952 }
82953
82954-static inline u64 get_unaligned_be64(const void *p)
82955+static inline u64 __intentional_overflow(-1) get_unaligned_be64(const void *p)
82956 {
82957- return be64_to_cpup((__be64 *)p);
82958+ return be64_to_cpup((const __be64 *)p);
82959 }
82960
82961 static inline void put_unaligned_le16(u16 val, void *p)
82962diff --git a/include/linux/usb.h b/include/linux/usb.h
82963index 6b7ec37..4428419 100644
82964--- a/include/linux/usb.h
82965+++ b/include/linux/usb.h
82966@@ -569,7 +569,7 @@ struct usb_device {
82967 int maxchild;
82968
82969 u32 quirks;
82970- atomic_t urbnum;
82971+ atomic_unchecked_t urbnum;
82972
82973 unsigned long active_duration;
82974
82975@@ -1653,7 +1653,7 @@ void usb_buffer_unmap_sg(const struct usb_device *dev, int is_in,
82976
82977 extern int usb_control_msg(struct usb_device *dev, unsigned int pipe,
82978 __u8 request, __u8 requesttype, __u16 value, __u16 index,
82979- void *data, __u16 size, int timeout);
82980+ void *data, __u16 size, int timeout) __intentional_overflow(-1);
82981 extern int usb_interrupt_msg(struct usb_device *usb_dev, unsigned int pipe,
82982 void *data, int len, int *actual_length, int timeout);
82983 extern int usb_bulk_msg(struct usb_device *usb_dev, unsigned int pipe,
82984diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h
82985index e452ba6..78f8e80 100644
82986--- a/include/linux/usb/renesas_usbhs.h
82987+++ b/include/linux/usb/renesas_usbhs.h
82988@@ -39,7 +39,7 @@ enum {
82989 */
82990 struct renesas_usbhs_driver_callback {
82991 int (*notify_hotplug)(struct platform_device *pdev);
82992-};
82993+} __no_const;
82994
82995 /*
82996 * callback functions for platform
82997diff --git a/include/linux/user_namespace.h b/include/linux/user_namespace.h
82998index 4836ba3..603f6ee 100644
82999--- a/include/linux/user_namespace.h
83000+++ b/include/linux/user_namespace.h
83001@@ -33,7 +33,7 @@ struct user_namespace {
83002 struct key *persistent_keyring_register;
83003 struct rw_semaphore persistent_keyring_register_sem;
83004 #endif
83005-};
83006+} __randomize_layout;
83007
83008 extern struct user_namespace init_user_ns;
83009
83010diff --git a/include/linux/utsname.h b/include/linux/utsname.h
83011index 239e277..22a5cf5 100644
83012--- a/include/linux/utsname.h
83013+++ b/include/linux/utsname.h
83014@@ -24,7 +24,7 @@ struct uts_namespace {
83015 struct new_utsname name;
83016 struct user_namespace *user_ns;
83017 unsigned int proc_inum;
83018-};
83019+} __randomize_layout;
83020 extern struct uts_namespace init_uts_ns;
83021
83022 #ifdef CONFIG_UTS_NS
83023diff --git a/include/linux/vermagic.h b/include/linux/vermagic.h
83024index 6f8fbcf..4efc177 100644
83025--- a/include/linux/vermagic.h
83026+++ b/include/linux/vermagic.h
83027@@ -25,9 +25,42 @@
83028 #define MODULE_ARCH_VERMAGIC ""
83029 #endif
83030
83031+#ifdef CONFIG_PAX_REFCOUNT
83032+#define MODULE_PAX_REFCOUNT "REFCOUNT "
83033+#else
83034+#define MODULE_PAX_REFCOUNT ""
83035+#endif
83036+
83037+#ifdef CONSTIFY_PLUGIN
83038+#define MODULE_CONSTIFY_PLUGIN "CONSTIFY_PLUGIN "
83039+#else
83040+#define MODULE_CONSTIFY_PLUGIN ""
83041+#endif
83042+
83043+#ifdef STACKLEAK_PLUGIN
83044+#define MODULE_STACKLEAK_PLUGIN "STACKLEAK_PLUGIN "
83045+#else
83046+#define MODULE_STACKLEAK_PLUGIN ""
83047+#endif
83048+
83049+#ifdef RANDSTRUCT_PLUGIN
83050+#include <generated/randomize_layout_hash.h>
83051+#define MODULE_RANDSTRUCT_PLUGIN "RANDSTRUCT_PLUGIN_" RANDSTRUCT_HASHED_SEED
83052+#else
83053+#define MODULE_RANDSTRUCT_PLUGIN
83054+#endif
83055+
83056+#ifdef CONFIG_GRKERNSEC
83057+#define MODULE_GRSEC "GRSEC "
83058+#else
83059+#define MODULE_GRSEC ""
83060+#endif
83061+
83062 #define VERMAGIC_STRING \
83063 UTS_RELEASE " " \
83064 MODULE_VERMAGIC_SMP MODULE_VERMAGIC_PREEMPT \
83065 MODULE_VERMAGIC_MODULE_UNLOAD MODULE_VERMAGIC_MODVERSIONS \
83066- MODULE_ARCH_VERMAGIC
83067+ MODULE_ARCH_VERMAGIC \
83068+ MODULE_PAX_REFCOUNT MODULE_CONSTIFY_PLUGIN MODULE_STACKLEAK_PLUGIN \
83069+ MODULE_GRSEC MODULE_RANDSTRUCT_PLUGIN
83070
83071diff --git a/include/linux/vga_switcheroo.h b/include/linux/vga_switcheroo.h
83072index 502073a..a7de024 100644
83073--- a/include/linux/vga_switcheroo.h
83074+++ b/include/linux/vga_switcheroo.h
83075@@ -63,8 +63,8 @@ int vga_switcheroo_get_client_state(struct pci_dev *dev);
83076
83077 void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic);
83078
83079-int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain);
83080-int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain);
83081+int vga_switcheroo_init_domain_pm_ops(struct device *dev, dev_pm_domain_no_const *domain);
83082+int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, dev_pm_domain_no_const *domain);
83083 #else
83084
83085 static inline void vga_switcheroo_unregister_client(struct pci_dev *dev) {}
83086@@ -81,8 +81,8 @@ static inline int vga_switcheroo_get_client_state(struct pci_dev *dev) { return
83087
83088 static inline void vga_switcheroo_set_dynamic_switch(struct pci_dev *pdev, enum vga_switcheroo_state dynamic) {}
83089
83090-static inline int vga_switcheroo_init_domain_pm_ops(struct device *dev, struct dev_pm_domain *domain) { return -EINVAL; }
83091-static inline int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, struct dev_pm_domain *domain) { return -EINVAL; }
83092+static inline int vga_switcheroo_init_domain_pm_ops(struct device *dev, dev_pm_domain_no_const *domain) { return -EINVAL; }
83093+static inline int vga_switcheroo_init_domain_pm_optimus_hdmi_audio(struct device *dev, dev_pm_domain_no_const *domain) { return -EINVAL; }
83094
83095 #endif
83096 #endif /* _LINUX_VGA_SWITCHEROO_H_ */
83097diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
83098index 4b8a891..e9a2863 100644
83099--- a/include/linux/vmalloc.h
83100+++ b/include/linux/vmalloc.h
83101@@ -16,6 +16,11 @@ struct vm_area_struct; /* vma defining user mapping in mm_types.h */
83102 #define VM_USERMAP 0x00000008 /* suitable for remap_vmalloc_range */
83103 #define VM_VPAGES 0x00000010 /* buffer for pages was vmalloc'ed */
83104 #define VM_UNINITIALIZED 0x00000020 /* vm_struct is not fully initialized */
83105+
83106+#if defined(CONFIG_X86) && defined(CONFIG_PAX_KERNEXEC)
83107+#define VM_KERNEXEC 0x00000040 /* allocate from executable kernel memory range */
83108+#endif
83109+
83110 /* bits [20..32] reserved for arch specific ioremap internals */
83111
83112 /*
83113@@ -82,6 +87,10 @@ extern void *vmap(struct page **pages, unsigned int count,
83114 unsigned long flags, pgprot_t prot);
83115 extern void vunmap(const void *addr);
83116
83117+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
83118+extern void unmap_process_stacks(struct task_struct *task);
83119+#endif
83120+
83121 extern int remap_vmalloc_range_partial(struct vm_area_struct *vma,
83122 unsigned long uaddr, void *kaddr,
83123 unsigned long size);
83124@@ -142,7 +151,7 @@ extern void free_vm_area(struct vm_struct *area);
83125
83126 /* for /dev/kmem */
83127 extern long vread(char *buf, char *addr, unsigned long count);
83128-extern long vwrite(char *buf, char *addr, unsigned long count);
83129+extern long vwrite(char *buf, char *addr, unsigned long count) __size_overflow(3);
83130
83131 /*
83132 * Internals. Dont't use..
83133diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
83134index 45c9cd1..20bd0bf 100644
83135--- a/include/linux/vmstat.h
83136+++ b/include/linux/vmstat.h
83137@@ -102,18 +102,18 @@ static inline void vm_events_fold_cpu(int cpu)
83138 /*
83139 * Zone based page accounting with per cpu differentials.
83140 */
83141-extern atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS];
83142+extern atomic_long_unchecked_t vm_stat[NR_VM_ZONE_STAT_ITEMS];
83143
83144 static inline void zone_page_state_add(long x, struct zone *zone,
83145 enum zone_stat_item item)
83146 {
83147- atomic_long_add(x, &zone->vm_stat[item]);
83148- atomic_long_add(x, &vm_stat[item]);
83149+ atomic_long_add_unchecked(x, &zone->vm_stat[item]);
83150+ atomic_long_add_unchecked(x, &vm_stat[item]);
83151 }
83152
83153-static inline unsigned long global_page_state(enum zone_stat_item item)
83154+static inline unsigned long __intentional_overflow(-1) global_page_state(enum zone_stat_item item)
83155 {
83156- long x = atomic_long_read(&vm_stat[item]);
83157+ long x = atomic_long_read_unchecked(&vm_stat[item]);
83158 #ifdef CONFIG_SMP
83159 if (x < 0)
83160 x = 0;
83161@@ -121,10 +121,10 @@ static inline unsigned long global_page_state(enum zone_stat_item item)
83162 return x;
83163 }
83164
83165-static inline unsigned long zone_page_state(struct zone *zone,
83166+static inline unsigned long __intentional_overflow(-1) zone_page_state(struct zone *zone,
83167 enum zone_stat_item item)
83168 {
83169- long x = atomic_long_read(&zone->vm_stat[item]);
83170+ long x = atomic_long_read_unchecked(&zone->vm_stat[item]);
83171 #ifdef CONFIG_SMP
83172 if (x < 0)
83173 x = 0;
83174@@ -141,7 +141,7 @@ static inline unsigned long zone_page_state(struct zone *zone,
83175 static inline unsigned long zone_page_state_snapshot(struct zone *zone,
83176 enum zone_stat_item item)
83177 {
83178- long x = atomic_long_read(&zone->vm_stat[item]);
83179+ long x = atomic_long_read_unchecked(&zone->vm_stat[item]);
83180
83181 #ifdef CONFIG_SMP
83182 int cpu;
83183@@ -228,14 +228,14 @@ static inline void __mod_zone_page_state(struct zone *zone,
83184
83185 static inline void __inc_zone_state(struct zone *zone, enum zone_stat_item item)
83186 {
83187- atomic_long_inc(&zone->vm_stat[item]);
83188- atomic_long_inc(&vm_stat[item]);
83189+ atomic_long_inc_unchecked(&zone->vm_stat[item]);
83190+ atomic_long_inc_unchecked(&vm_stat[item]);
83191 }
83192
83193 static inline void __dec_zone_state(struct zone *zone, enum zone_stat_item item)
83194 {
83195- atomic_long_dec(&zone->vm_stat[item]);
83196- atomic_long_dec(&vm_stat[item]);
83197+ atomic_long_dec_unchecked(&zone->vm_stat[item]);
83198+ atomic_long_dec_unchecked(&vm_stat[item]);
83199 }
83200
83201 static inline void __inc_zone_page_state(struct page *page,
83202diff --git a/include/linux/xattr.h b/include/linux/xattr.h
83203index 91b0a68..0e9adf6 100644
83204--- a/include/linux/xattr.h
83205+++ b/include/linux/xattr.h
83206@@ -28,7 +28,7 @@ struct xattr_handler {
83207 size_t size, int handler_flags);
83208 int (*set)(struct dentry *dentry, const char *name, const void *buffer,
83209 size_t size, int flags, int handler_flags);
83210-};
83211+} __do_const;
83212
83213 struct xattr {
83214 const char *name;
83215@@ -37,6 +37,9 @@ struct xattr {
83216 };
83217
83218 ssize_t xattr_getsecurity(struct inode *, const char *, void *, size_t);
83219+#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
83220+ssize_t pax_getxattr(struct dentry *, void *, size_t);
83221+#endif
83222 ssize_t vfs_getxattr(struct dentry *, const char *, void *, size_t);
83223 ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
83224 int __vfs_setxattr_noperm(struct dentry *, const char *, const void *, size_t, int);
83225diff --git a/include/linux/zlib.h b/include/linux/zlib.h
83226index 9c5a6b4..09c9438 100644
83227--- a/include/linux/zlib.h
83228+++ b/include/linux/zlib.h
83229@@ -31,6 +31,7 @@
83230 #define _ZLIB_H
83231
83232 #include <linux/zconf.h>
83233+#include <linux/compiler.h>
83234
83235 /* zlib deflate based on ZLIB_VERSION "1.1.3" */
83236 /* zlib inflate based on ZLIB_VERSION "1.2.3" */
83237@@ -179,7 +180,7 @@ typedef z_stream *z_streamp;
83238
83239 /* basic functions */
83240
83241-extern int zlib_deflate_workspacesize (int windowBits, int memLevel);
83242+extern int zlib_deflate_workspacesize (int windowBits, int memLevel) __intentional_overflow(0);
83243 /*
83244 Returns the number of bytes that needs to be allocated for a per-
83245 stream workspace with the specified parameters. A pointer to this
83246diff --git a/include/media/v4l2-dev.h b/include/media/v4l2-dev.h
83247index eec6e46..82d5641 100644
83248--- a/include/media/v4l2-dev.h
83249+++ b/include/media/v4l2-dev.h
83250@@ -77,7 +77,7 @@ struct v4l2_file_operations {
83251 int (*mmap) (struct file *, struct vm_area_struct *);
83252 int (*open) (struct file *);
83253 int (*release) (struct file *);
83254-};
83255+} __do_const;
83256
83257 /*
83258 * Newer version of video_device, handled by videodev2.c
83259diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h
83260index c9b1593..a572459 100644
83261--- a/include/media/v4l2-device.h
83262+++ b/include/media/v4l2-device.h
83263@@ -95,7 +95,7 @@ int __must_check v4l2_device_register(struct device *dev, struct v4l2_device *v4
83264 this function returns 0. If the name ends with a digit (e.g. cx18),
83265 then the name will be set to cx18-0 since cx180 looks really odd. */
83266 int v4l2_device_set_name(struct v4l2_device *v4l2_dev, const char *basename,
83267- atomic_t *instance);
83268+ atomic_unchecked_t *instance);
83269
83270 /* Set v4l2_dev->dev to NULL. Call when the USB parent disconnects.
83271 Since the parent disappears this ensures that v4l2_dev doesn't have an
83272diff --git a/include/net/9p/transport.h b/include/net/9p/transport.h
83273index d9fa68f..45c88d1 100644
83274--- a/include/net/9p/transport.h
83275+++ b/include/net/9p/transport.h
83276@@ -63,7 +63,7 @@ struct p9_trans_module {
83277 int (*cancelled)(struct p9_client *, struct p9_req_t *req);
83278 int (*zc_request)(struct p9_client *, struct p9_req_t *,
83279 char *, char *, int , int, int, int);
83280-};
83281+} __do_const;
83282
83283 void v9fs_register_trans(struct p9_trans_module *m);
83284 void v9fs_unregister_trans(struct p9_trans_module *m);
83285diff --git a/include/net/af_unix.h b/include/net/af_unix.h
83286index a175ba4..196eb82 100644
83287--- a/include/net/af_unix.h
83288+++ b/include/net/af_unix.h
83289@@ -36,7 +36,7 @@ struct unix_skb_parms {
83290 u32 secid; /* Security ID */
83291 #endif
83292 u32 consumed;
83293-};
83294+} __randomize_layout;
83295
83296 #define UNIXCB(skb) (*(struct unix_skb_parms *)&((skb)->cb))
83297 #define UNIXSID(skb) (&UNIXCB((skb)).secid)
83298diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
83299index 4abdcb2..945c5cc 100644
83300--- a/include/net/bluetooth/l2cap.h
83301+++ b/include/net/bluetooth/l2cap.h
83302@@ -601,7 +601,7 @@ struct l2cap_ops {
83303 long (*get_sndtimeo) (struct l2cap_chan *chan);
83304 struct sk_buff *(*alloc_skb) (struct l2cap_chan *chan,
83305 unsigned long len, int nb);
83306-};
83307+} __do_const;
83308
83309 struct l2cap_conn {
83310 struct hci_conn *hcon;
83311diff --git a/include/net/caif/cfctrl.h b/include/net/caif/cfctrl.h
83312index f2ae33d..c457cf0 100644
83313--- a/include/net/caif/cfctrl.h
83314+++ b/include/net/caif/cfctrl.h
83315@@ -52,7 +52,7 @@ struct cfctrl_rsp {
83316 void (*radioset_rsp)(void);
83317 void (*reject_rsp)(struct cflayer *layer, u8 linkid,
83318 struct cflayer *client_layer);
83319-};
83320+} __no_const;
83321
83322 /* Link Setup Parameters for CAIF-Links. */
83323 struct cfctrl_link_param {
83324@@ -101,8 +101,8 @@ struct cfctrl_request_info {
83325 struct cfctrl {
83326 struct cfsrvl serv;
83327 struct cfctrl_rsp res;
83328- atomic_t req_seq_no;
83329- atomic_t rsp_seq_no;
83330+ atomic_unchecked_t req_seq_no;
83331+ atomic_unchecked_t rsp_seq_no;
83332 struct list_head list;
83333 /* Protects from simultaneous access to first_req list */
83334 spinlock_t info_list_lock;
83335diff --git a/include/net/flow.h b/include/net/flow.h
83336index 8109a15..504466d 100644
83337--- a/include/net/flow.h
83338+++ b/include/net/flow.h
83339@@ -231,6 +231,6 @@ void flow_cache_fini(struct net *net);
83340
83341 void flow_cache_flush(struct net *net);
83342 void flow_cache_flush_deferred(struct net *net);
83343-extern atomic_t flow_cache_genid;
83344+extern atomic_unchecked_t flow_cache_genid;
83345
83346 #endif
83347diff --git a/include/net/genetlink.h b/include/net/genetlink.h
83348index 93695f0..766d71c 100644
83349--- a/include/net/genetlink.h
83350+++ b/include/net/genetlink.h
83351@@ -120,7 +120,7 @@ struct genl_ops {
83352 u8 cmd;
83353 u8 internal_flags;
83354 u8 flags;
83355-};
83356+} __do_const;
83357
83358 int __genl_register_family(struct genl_family *family);
83359
83360diff --git a/include/net/gro_cells.h b/include/net/gro_cells.h
83361index 734d9b5..48a9a4b 100644
83362--- a/include/net/gro_cells.h
83363+++ b/include/net/gro_cells.h
83364@@ -29,7 +29,7 @@ static inline void gro_cells_receive(struct gro_cells *gcells, struct sk_buff *s
83365 cell += skb_get_rx_queue(skb) & gcells->gro_cells_mask;
83366
83367 if (skb_queue_len(&cell->napi_skbs) > netdev_max_backlog) {
83368- atomic_long_inc(&dev->rx_dropped);
83369+ atomic_long_inc_unchecked(&dev->rx_dropped);
83370 kfree_skb(skb);
83371 return;
83372 }
83373diff --git a/include/net/inet_connection_sock.h b/include/net/inet_connection_sock.h
83374index 7a43138..bc76865 100644
83375--- a/include/net/inet_connection_sock.h
83376+++ b/include/net/inet_connection_sock.h
83377@@ -62,7 +62,7 @@ struct inet_connection_sock_af_ops {
83378 void (*addr2sockaddr)(struct sock *sk, struct sockaddr *);
83379 int (*bind_conflict)(const struct sock *sk,
83380 const struct inet_bind_bucket *tb, bool relax);
83381-};
83382+} __do_const;
83383
83384 /** inet_connection_sock - INET connection oriented sock
83385 *
83386diff --git a/include/net/inetpeer.h b/include/net/inetpeer.h
83387index 058271b..1a44af7 100644
83388--- a/include/net/inetpeer.h
83389+++ b/include/net/inetpeer.h
83390@@ -47,8 +47,8 @@ struct inet_peer {
83391 */
83392 union {
83393 struct {
83394- atomic_t rid; /* Frag reception counter */
83395- atomic_t ip_id_count; /* IP ID for the next packet */
83396+ atomic_unchecked_t rid; /* Frag reception counter */
83397+ atomic_unchecked_t ip_id_count; /* IP ID for the next packet */
83398 };
83399 struct rcu_head rcu;
83400 struct inet_peer *gc_next;
83401@@ -179,7 +179,7 @@ static inline int inet_getid(struct inet_peer *p, int more)
83402 {
83403 more++;
83404 inet_peer_refcheck(p);
83405- return atomic_add_return(more, &p->ip_id_count) - more;
83406+ return atomic_add_return_unchecked(more, &p->ip_id_count) - more;
83407 }
83408
83409 #endif /* _NET_INETPEER_H */
83410diff --git a/include/net/ip.h b/include/net/ip.h
83411index 3ec2b0f..72435b6 100644
83412--- a/include/net/ip.h
83413+++ b/include/net/ip.h
83414@@ -220,7 +220,7 @@ static inline void snmp_mib_free(void __percpu *ptr[SNMP_ARRAY_SZ])
83415
83416 void inet_get_local_port_range(struct net *net, int *low, int *high);
83417
83418-extern unsigned long *sysctl_local_reserved_ports;
83419+extern unsigned long sysctl_local_reserved_ports[65536 / 8 / sizeof(unsigned long)];
83420 static inline int inet_is_reserved_local_port(int port)
83421 {
83422 return test_bit(port, sysctl_local_reserved_ports);
83423diff --git a/include/net/ip_fib.h b/include/net/ip_fib.h
83424index 9922093..a1755d6 100644
83425--- a/include/net/ip_fib.h
83426+++ b/include/net/ip_fib.h
83427@@ -169,7 +169,7 @@ __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh);
83428
83429 #define FIB_RES_SADDR(net, res) \
83430 ((FIB_RES_NH(res).nh_saddr_genid == \
83431- atomic_read(&(net)->ipv4.dev_addr_genid)) ? \
83432+ atomic_read_unchecked(&(net)->ipv4.dev_addr_genid)) ? \
83433 FIB_RES_NH(res).nh_saddr : \
83434 fib_info_update_nh_saddr((net), &FIB_RES_NH(res)))
83435 #define FIB_RES_GW(res) (FIB_RES_NH(res).nh_gw)
83436diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
83437index 5679d92..2e7a690 100644
83438--- a/include/net/ip_vs.h
83439+++ b/include/net/ip_vs.h
83440@@ -558,7 +558,7 @@ struct ip_vs_conn {
83441 struct ip_vs_conn *control; /* Master control connection */
83442 atomic_t n_control; /* Number of controlled ones */
83443 struct ip_vs_dest *dest; /* real server */
83444- atomic_t in_pkts; /* incoming packet counter */
83445+ atomic_unchecked_t in_pkts; /* incoming packet counter */
83446
83447 /* packet transmitter for different forwarding methods. If it
83448 mangles the packet, it must return NF_DROP or better NF_STOLEN,
83449@@ -705,7 +705,7 @@ struct ip_vs_dest {
83450 __be16 port; /* port number of the server */
83451 union nf_inet_addr addr; /* IP address of the server */
83452 volatile unsigned int flags; /* dest status flags */
83453- atomic_t conn_flags; /* flags to copy to conn */
83454+ atomic_unchecked_t conn_flags; /* flags to copy to conn */
83455 atomic_t weight; /* server weight */
83456
83457 atomic_t refcnt; /* reference counter */
83458@@ -960,11 +960,11 @@ struct netns_ipvs {
83459 /* ip_vs_lblc */
83460 int sysctl_lblc_expiration;
83461 struct ctl_table_header *lblc_ctl_header;
83462- struct ctl_table *lblc_ctl_table;
83463+ ctl_table_no_const *lblc_ctl_table;
83464 /* ip_vs_lblcr */
83465 int sysctl_lblcr_expiration;
83466 struct ctl_table_header *lblcr_ctl_header;
83467- struct ctl_table *lblcr_ctl_table;
83468+ ctl_table_no_const *lblcr_ctl_table;
83469 /* ip_vs_est */
83470 struct list_head est_list; /* estimator list */
83471 spinlock_t est_lock;
83472diff --git a/include/net/irda/ircomm_tty.h b/include/net/irda/ircomm_tty.h
83473index 8d4f588..2e37ad2 100644
83474--- a/include/net/irda/ircomm_tty.h
83475+++ b/include/net/irda/ircomm_tty.h
83476@@ -33,6 +33,7 @@
83477 #include <linux/termios.h>
83478 #include <linux/timer.h>
83479 #include <linux/tty.h> /* struct tty_struct */
83480+#include <asm/local.h>
83481
83482 #include <net/irda/irias_object.h>
83483 #include <net/irda/ircomm_core.h>
83484diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h
83485index 714cc9a..ea05f3e 100644
83486--- a/include/net/iucv/af_iucv.h
83487+++ b/include/net/iucv/af_iucv.h
83488@@ -149,7 +149,7 @@ struct iucv_skb_cb {
83489 struct iucv_sock_list {
83490 struct hlist_head head;
83491 rwlock_t lock;
83492- atomic_t autobind_name;
83493+ atomic_unchecked_t autobind_name;
83494 };
83495
83496 unsigned int iucv_sock_poll(struct file *file, struct socket *sock,
83497diff --git a/include/net/llc_c_ac.h b/include/net/llc_c_ac.h
83498index f3be818..bf46196 100644
83499--- a/include/net/llc_c_ac.h
83500+++ b/include/net/llc_c_ac.h
83501@@ -87,7 +87,7 @@
83502 #define LLC_CONN_AC_STOP_SENDACK_TMR 70
83503 #define LLC_CONN_AC_START_SENDACK_TMR_IF_NOT_RUNNING 71
83504
83505-typedef int (*llc_conn_action_t)(struct sock *sk, struct sk_buff *skb);
83506+typedef int (* const llc_conn_action_t)(struct sock *sk, struct sk_buff *skb);
83507
83508 int llc_conn_ac_clear_remote_busy(struct sock *sk, struct sk_buff *skb);
83509 int llc_conn_ac_conn_ind(struct sock *sk, struct sk_buff *skb);
83510diff --git a/include/net/llc_c_ev.h b/include/net/llc_c_ev.h
83511index 3948cf1..83b28c4 100644
83512--- a/include/net/llc_c_ev.h
83513+++ b/include/net/llc_c_ev.h
83514@@ -125,8 +125,8 @@ static __inline__ struct llc_conn_state_ev *llc_conn_ev(struct sk_buff *skb)
83515 return (struct llc_conn_state_ev *)skb->cb;
83516 }
83517
83518-typedef int (*llc_conn_ev_t)(struct sock *sk, struct sk_buff *skb);
83519-typedef int (*llc_conn_ev_qfyr_t)(struct sock *sk, struct sk_buff *skb);
83520+typedef int (* const llc_conn_ev_t)(struct sock *sk, struct sk_buff *skb);
83521+typedef int (* const llc_conn_ev_qfyr_t)(struct sock *sk, struct sk_buff *skb);
83522
83523 int llc_conn_ev_conn_req(struct sock *sk, struct sk_buff *skb);
83524 int llc_conn_ev_data_req(struct sock *sk, struct sk_buff *skb);
83525diff --git a/include/net/llc_c_st.h b/include/net/llc_c_st.h
83526index 0e79cfb..f46db31 100644
83527--- a/include/net/llc_c_st.h
83528+++ b/include/net/llc_c_st.h
83529@@ -37,7 +37,7 @@ struct llc_conn_state_trans {
83530 u8 next_state;
83531 llc_conn_ev_qfyr_t *ev_qualifiers;
83532 llc_conn_action_t *ev_actions;
83533-};
83534+} __do_const;
83535
83536 struct llc_conn_state {
83537 u8 current_state;
83538diff --git a/include/net/llc_s_ac.h b/include/net/llc_s_ac.h
83539index a61b98c..aade1eb 100644
83540--- a/include/net/llc_s_ac.h
83541+++ b/include/net/llc_s_ac.h
83542@@ -23,7 +23,7 @@
83543 #define SAP_ACT_TEST_IND 9
83544
83545 /* All action functions must look like this */
83546-typedef int (*llc_sap_action_t)(struct llc_sap *sap, struct sk_buff *skb);
83547+typedef int (* const llc_sap_action_t)(struct llc_sap *sap, struct sk_buff *skb);
83548
83549 int llc_sap_action_unitdata_ind(struct llc_sap *sap, struct sk_buff *skb);
83550 int llc_sap_action_send_ui(struct llc_sap *sap, struct sk_buff *skb);
83551diff --git a/include/net/llc_s_st.h b/include/net/llc_s_st.h
83552index 567c681..cd73ac02 100644
83553--- a/include/net/llc_s_st.h
83554+++ b/include/net/llc_s_st.h
83555@@ -20,7 +20,7 @@ struct llc_sap_state_trans {
83556 llc_sap_ev_t ev;
83557 u8 next_state;
83558 llc_sap_action_t *ev_actions;
83559-};
83560+} __do_const;
83561
83562 struct llc_sap_state {
83563 u8 curr_state;
83564diff --git a/include/net/mac80211.h b/include/net/mac80211.h
83565index 8248e39..7610eec 100644
83566--- a/include/net/mac80211.h
83567+++ b/include/net/mac80211.h
83568@@ -4467,7 +4467,7 @@ struct rate_control_ops {
83569 void (*add_sta_debugfs)(void *priv, void *priv_sta,
83570 struct dentry *dir);
83571 void (*remove_sta_debugfs)(void *priv, void *priv_sta);
83572-};
83573+} __do_const;
83574
83575 static inline int rate_supported(struct ieee80211_sta *sta,
83576 enum ieee80211_band band,
83577diff --git a/include/net/neighbour.h b/include/net/neighbour.h
83578index 7277caf..fd095bc 100644
83579--- a/include/net/neighbour.h
83580+++ b/include/net/neighbour.h
83581@@ -163,7 +163,7 @@ struct neigh_ops {
83582 void (*error_report)(struct neighbour *, struct sk_buff *);
83583 int (*output)(struct neighbour *, struct sk_buff *);
83584 int (*connected_output)(struct neighbour *, struct sk_buff *);
83585-};
83586+} __do_const;
83587
83588 struct pneigh_entry {
83589 struct pneigh_entry *next;
83590@@ -203,7 +203,6 @@ struct neigh_table {
83591 void (*proxy_redo)(struct sk_buff *skb);
83592 char *id;
83593 struct neigh_parms parms;
83594- /* HACK. gc_* should follow parms without a gap! */
83595 int gc_interval;
83596 int gc_thresh1;
83597 int gc_thresh2;
83598@@ -218,7 +217,7 @@ struct neigh_table {
83599 struct neigh_statistics __percpu *stats;
83600 struct neigh_hash_table __rcu *nht;
83601 struct pneigh_entry **phash_buckets;
83602-};
83603+} __randomize_layout;
83604
83605 static inline int neigh_parms_family(struct neigh_parms *p)
83606 {
83607diff --git a/include/net/net_namespace.h b/include/net/net_namespace.h
83608index 5f9eb26..85699c4 100644
83609--- a/include/net/net_namespace.h
83610+++ b/include/net/net_namespace.h
83611@@ -129,8 +129,8 @@ struct net {
83612 struct netns_ipvs *ipvs;
83613 #endif
83614 struct sock *diag_nlsk;
83615- atomic_t fnhe_genid;
83616-};
83617+ atomic_unchecked_t fnhe_genid;
83618+} __randomize_layout;
83619
83620 #include <linux/seq_file_net.h>
83621
83622@@ -286,7 +286,11 @@ static inline struct net *read_pnet(struct net * const *pnet)
83623 #define __net_init __init
83624 #define __net_exit __exit_refok
83625 #define __net_initdata __initdata
83626+#ifdef CONSTIFY_PLUGIN
83627 #define __net_initconst __initconst
83628+#else
83629+#define __net_initconst __initdata
83630+#endif
83631 #endif
83632
83633 struct pernet_operations {
83634@@ -296,7 +300,7 @@ struct pernet_operations {
83635 void (*exit_batch)(struct list_head *net_exit_list);
83636 int *id;
83637 size_t size;
83638-};
83639+} __do_const;
83640
83641 /*
83642 * Use these carefully. If you implement a network device and it
83643@@ -344,23 +348,23 @@ static inline void unregister_net_sysctl_table(struct ctl_table_header *header)
83644
83645 static inline int rt_genid_ipv4(struct net *net)
83646 {
83647- return atomic_read(&net->ipv4.rt_genid);
83648+ return atomic_read_unchecked(&net->ipv4.rt_genid);
83649 }
83650
83651 static inline void rt_genid_bump_ipv4(struct net *net)
83652 {
83653- atomic_inc(&net->ipv4.rt_genid);
83654+ atomic_inc_unchecked(&net->ipv4.rt_genid);
83655 }
83656
83657 #if IS_ENABLED(CONFIG_IPV6)
83658 static inline int rt_genid_ipv6(struct net *net)
83659 {
83660- return atomic_read(&net->ipv6.rt_genid);
83661+ return atomic_read_unchecked(&net->ipv6.rt_genid);
83662 }
83663
83664 static inline void rt_genid_bump_ipv6(struct net *net)
83665 {
83666- atomic_inc(&net->ipv6.rt_genid);
83667+ atomic_inc_unchecked(&net->ipv6.rt_genid);
83668 }
83669 #else
83670 static inline int rt_genid_ipv6(struct net *net)
83671@@ -382,12 +386,12 @@ static inline void rt_genid_bump_all(struct net *net)
83672
83673 static inline int fnhe_genid(struct net *net)
83674 {
83675- return atomic_read(&net->fnhe_genid);
83676+ return atomic_read_unchecked(&net->fnhe_genid);
83677 }
83678
83679 static inline void fnhe_genid_bump(struct net *net)
83680 {
83681- atomic_inc(&net->fnhe_genid);
83682+ atomic_inc_unchecked(&net->fnhe_genid);
83683 }
83684
83685 #endif /* __NET_NET_NAMESPACE_H */
83686diff --git a/include/net/netdma.h b/include/net/netdma.h
83687index 8ba8ce2..99b7fff 100644
83688--- a/include/net/netdma.h
83689+++ b/include/net/netdma.h
83690@@ -24,7 +24,7 @@
83691 #include <linux/dmaengine.h>
83692 #include <linux/skbuff.h>
83693
83694-int dma_skb_copy_datagram_iovec(struct dma_chan* chan,
83695+int __intentional_overflow(3,5) dma_skb_copy_datagram_iovec(struct dma_chan* chan,
83696 struct sk_buff *skb, int offset, struct iovec *to,
83697 size_t len, struct dma_pinned_list *pinned_list);
83698
83699diff --git a/include/net/netlink.h b/include/net/netlink.h
83700index 2b47eaa..6d5bcc2 100644
83701--- a/include/net/netlink.h
83702+++ b/include/net/netlink.h
83703@@ -521,7 +521,7 @@ static inline void *nlmsg_get_pos(struct sk_buff *skb)
83704 static inline void nlmsg_trim(struct sk_buff *skb, const void *mark)
83705 {
83706 if (mark)
83707- skb_trim(skb, (unsigned char *) mark - skb->data);
83708+ skb_trim(skb, (const unsigned char *) mark - skb->data);
83709 }
83710
83711 /**
83712diff --git a/include/net/netns/conntrack.h b/include/net/netns/conntrack.h
83713index 773cce3..6a11852 100644
83714--- a/include/net/netns/conntrack.h
83715+++ b/include/net/netns/conntrack.h
83716@@ -13,10 +13,10 @@ struct nf_conntrack_ecache;
83717 struct nf_proto_net {
83718 #ifdef CONFIG_SYSCTL
83719 struct ctl_table_header *ctl_table_header;
83720- struct ctl_table *ctl_table;
83721+ ctl_table_no_const *ctl_table;
83722 #ifdef CONFIG_NF_CONNTRACK_PROC_COMPAT
83723 struct ctl_table_header *ctl_compat_header;
83724- struct ctl_table *ctl_compat_table;
83725+ ctl_table_no_const *ctl_compat_table;
83726 #endif
83727 #endif
83728 unsigned int users;
83729@@ -59,7 +59,7 @@ struct nf_ip_net {
83730 struct nf_icmp_net icmpv6;
83731 #if defined(CONFIG_SYSCTL) && defined(CONFIG_NF_CONNTRACK_PROC_COMPAT)
83732 struct ctl_table_header *ctl_table_header;
83733- struct ctl_table *ctl_table;
83734+ ctl_table_no_const *ctl_table;
83735 #endif
83736 };
83737
83738diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
83739index b2704fd0..421d717 100644
83740--- a/include/net/netns/ipv4.h
83741+++ b/include/net/netns/ipv4.h
83742@@ -79,7 +79,7 @@ struct netns_ipv4 {
83743
83744 struct ping_group_range ping_group_range;
83745
83746- atomic_t dev_addr_genid;
83747+ atomic_unchecked_t dev_addr_genid;
83748
83749 #ifdef CONFIG_IP_MROUTE
83750 #ifndef CONFIG_IP_MROUTE_MULTIPLE_TABLES
83751@@ -89,6 +89,6 @@ struct netns_ipv4 {
83752 struct fib_rules_ops *mr_rules_ops;
83753 #endif
83754 #endif
83755- atomic_t rt_genid;
83756+ atomic_unchecked_t rt_genid;
83757 };
83758 #endif
83759diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
83760index 21edaf1..4c5faae 100644
83761--- a/include/net/netns/ipv6.h
83762+++ b/include/net/netns/ipv6.h
83763@@ -73,8 +73,8 @@ struct netns_ipv6 {
83764 struct fib_rules_ops *mr6_rules_ops;
83765 #endif
83766 #endif
83767- atomic_t dev_addr_genid;
83768- atomic_t rt_genid;
83769+ atomic_unchecked_t dev_addr_genid;
83770+ atomic_unchecked_t rt_genid;
83771 };
83772
83773 #if IS_ENABLED(CONFIG_NF_DEFRAG_IPV6)
83774diff --git a/include/net/netns/xfrm.h b/include/net/netns/xfrm.h
83775index 3492434..209f58c 100644
83776--- a/include/net/netns/xfrm.h
83777+++ b/include/net/netns/xfrm.h
83778@@ -64,7 +64,7 @@ struct netns_xfrm {
83779
83780 /* flow cache part */
83781 struct flow_cache flow_cache_global;
83782- atomic_t flow_cache_genid;
83783+ atomic_unchecked_t flow_cache_genid;
83784 struct list_head flow_cache_gc_list;
83785 spinlock_t flow_cache_gc_lock;
83786 struct work_struct flow_cache_gc_work;
83787diff --git a/include/net/ping.h b/include/net/ping.h
83788index 026479b..d9b2829 100644
83789--- a/include/net/ping.h
83790+++ b/include/net/ping.h
83791@@ -54,7 +54,7 @@ struct ping_iter_state {
83792
83793 extern struct proto ping_prot;
83794 #if IS_ENABLED(CONFIG_IPV6)
83795-extern struct pingv6_ops pingv6_ops;
83796+extern struct pingv6_ops *pingv6_ops;
83797 #endif
83798
83799 struct pingfakehdr {
83800diff --git a/include/net/protocol.h b/include/net/protocol.h
83801index a7e986b..dc67bce 100644
83802--- a/include/net/protocol.h
83803+++ b/include/net/protocol.h
83804@@ -49,7 +49,7 @@ struct net_protocol {
83805 * socket lookup?
83806 */
83807 icmp_strict_tag_validation:1;
83808-};
83809+} __do_const;
83810
83811 #if IS_ENABLED(CONFIG_IPV6)
83812 struct inet6_protocol {
83813@@ -62,7 +62,7 @@ struct inet6_protocol {
83814 u8 type, u8 code, int offset,
83815 __be32 info);
83816 unsigned int flags; /* INET6_PROTO_xxx */
83817-};
83818+} __do_const;
83819
83820 #define INET6_PROTO_NOPOLICY 0x1
83821 #define INET6_PROTO_FINAL 0x2
83822diff --git a/include/net/rtnetlink.h b/include/net/rtnetlink.h
83823index 72240e5..8c14bef 100644
83824--- a/include/net/rtnetlink.h
83825+++ b/include/net/rtnetlink.h
83826@@ -93,7 +93,7 @@ struct rtnl_link_ops {
83827 int (*fill_slave_info)(struct sk_buff *skb,
83828 const struct net_device *dev,
83829 const struct net_device *slave_dev);
83830-};
83831+} __do_const;
83832
83833 int __rtnl_link_register(struct rtnl_link_ops *ops);
83834 void __rtnl_link_unregister(struct rtnl_link_ops *ops);
83835diff --git a/include/net/sctp/checksum.h b/include/net/sctp/checksum.h
83836index 4a5b9a3..ca27d73 100644
83837--- a/include/net/sctp/checksum.h
83838+++ b/include/net/sctp/checksum.h
83839@@ -61,8 +61,8 @@ static inline __le32 sctp_compute_cksum(const struct sk_buff *skb,
83840 unsigned int offset)
83841 {
83842 struct sctphdr *sh = sctp_hdr(skb);
83843- __le32 ret, old = sh->checksum;
83844- const struct skb_checksum_ops ops = {
83845+ __le32 ret, old = sh->checksum;
83846+ static const struct skb_checksum_ops ops = {
83847 .update = sctp_csum_update,
83848 .combine = sctp_csum_combine,
83849 };
83850diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h
83851index 7f4eeb3..37e8fe1 100644
83852--- a/include/net/sctp/sm.h
83853+++ b/include/net/sctp/sm.h
83854@@ -80,7 +80,7 @@ typedef void (sctp_timer_event_t) (unsigned long);
83855 typedef struct {
83856 sctp_state_fn_t *fn;
83857 const char *name;
83858-} sctp_sm_table_entry_t;
83859+} __do_const sctp_sm_table_entry_t;
83860
83861 /* A naming convention of "sctp_sf_xxx" applies to all the state functions
83862 * currently in use.
83863@@ -292,7 +292,7 @@ __u32 sctp_generate_tag(const struct sctp_endpoint *);
83864 __u32 sctp_generate_tsn(const struct sctp_endpoint *);
83865
83866 /* Extern declarations for major data structures. */
83867-extern sctp_timer_event_t *sctp_timer_events[SCTP_NUM_TIMEOUT_TYPES];
83868+extern sctp_timer_event_t * const sctp_timer_events[SCTP_NUM_TIMEOUT_TYPES];
83869
83870
83871 /* Get the size of a DATA chunk payload. */
83872diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
83873index 0dfcc92..7967849 100644
83874--- a/include/net/sctp/structs.h
83875+++ b/include/net/sctp/structs.h
83876@@ -507,7 +507,7 @@ struct sctp_pf {
83877 struct sctp_association *asoc);
83878 void (*addr_v4map) (struct sctp_sock *, union sctp_addr *);
83879 struct sctp_af *af;
83880-};
83881+} __do_const;
83882
83883
83884 /* Structure to track chunk fragments that have been acked, but peer
83885diff --git a/include/net/sock.h b/include/net/sock.h
83886index 21569cf..dd60300 100644
83887--- a/include/net/sock.h
83888+++ b/include/net/sock.h
83889@@ -348,7 +348,7 @@ struct sock {
83890 unsigned int sk_napi_id;
83891 unsigned int sk_ll_usec;
83892 #endif
83893- atomic_t sk_drops;
83894+ atomic_unchecked_t sk_drops;
83895 int sk_rcvbuf;
83896
83897 struct sk_filter __rcu *sk_filter;
83898@@ -1036,7 +1036,7 @@ struct proto {
83899 void (*destroy_cgroup)(struct mem_cgroup *memcg);
83900 struct cg_proto *(*proto_cgroup)(struct mem_cgroup *memcg);
83901 #endif
83902-};
83903+} __randomize_layout;
83904
83905 /*
83906 * Bits in struct cg_proto.flags
83907@@ -1223,7 +1223,7 @@ static inline u64 memcg_memory_allocated_read(struct cg_proto *prot)
83908 return ret >> PAGE_SHIFT;
83909 }
83910
83911-static inline long
83912+static inline long __intentional_overflow(-1)
83913 sk_memory_allocated(const struct sock *sk)
83914 {
83915 struct proto *prot = sk->sk_prot;
83916@@ -1368,7 +1368,7 @@ struct sock_iocb {
83917 struct scm_cookie *scm;
83918 struct msghdr *msg, async_msg;
83919 struct kiocb *kiocb;
83920-};
83921+} __randomize_layout;
83922
83923 static inline struct sock_iocb *kiocb_to_siocb(struct kiocb *iocb)
83924 {
83925@@ -1728,8 +1728,8 @@ sk_dst_get(struct sock *sk)
83926
83927 rcu_read_lock();
83928 dst = rcu_dereference(sk->sk_dst_cache);
83929- if (dst)
83930- dst_hold(dst);
83931+ if (dst && !atomic_inc_not_zero(&dst->__refcnt))
83932+ dst = NULL;
83933 rcu_read_unlock();
83934 return dst;
83935 }
83936@@ -1803,7 +1803,7 @@ static inline void sk_nocaps_add(struct sock *sk, netdev_features_t flags)
83937 }
83938
83939 static inline int skb_do_copy_data_nocache(struct sock *sk, struct sk_buff *skb,
83940- char __user *from, char *to,
83941+ char __user *from, unsigned char *to,
83942 int copy, int offset)
83943 {
83944 if (skb->ip_summed == CHECKSUM_NONE) {
83945@@ -2065,7 +2065,7 @@ static inline void sk_stream_moderate_sndbuf(struct sock *sk)
83946 }
83947 }
83948
83949-struct sk_buff *sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp);
83950+struct sk_buff * __intentional_overflow(0) sk_stream_alloc_skb(struct sock *sk, int size, gfp_t gfp);
83951
83952 /**
83953 * sk_page_frag - return an appropriate page_frag
83954diff --git a/include/net/tcp.h b/include/net/tcp.h
83955index 87d8774..cf214f8 100644
83956--- a/include/net/tcp.h
83957+++ b/include/net/tcp.h
83958@@ -541,7 +541,7 @@ void tcp_retransmit_timer(struct sock *sk);
83959 void tcp_xmit_retransmit_queue(struct sock *);
83960 void tcp_simple_retransmit(struct sock *);
83961 int tcp_trim_head(struct sock *, struct sk_buff *, u32);
83962-int tcp_fragment(struct sock *, struct sk_buff *, u32, unsigned int);
83963+int __intentional_overflow(3) tcp_fragment(struct sock *, struct sk_buff *, u32, unsigned int);
83964
83965 void tcp_send_probe0(struct sock *);
83966 void tcp_send_partial(struct sock *);
83967@@ -715,8 +715,8 @@ struct tcp_skb_cb {
83968 struct inet6_skb_parm h6;
83969 #endif
83970 } header; /* For incoming frames */
83971- __u32 seq; /* Starting sequence number */
83972- __u32 end_seq; /* SEQ + FIN + SYN + datalen */
83973+ __u32 seq __intentional_overflow(0); /* Starting sequence number */
83974+ __u32 end_seq __intentional_overflow(0); /* SEQ + FIN + SYN + datalen */
83975 __u32 when; /* used to compute rtt's */
83976 __u8 tcp_flags; /* TCP header flags. (tcp[13]) */
83977
83978@@ -730,7 +730,7 @@ struct tcp_skb_cb {
83979
83980 __u8 ip_dsfield; /* IPv4 tos or IPv6 dsfield */
83981 /* 1 byte hole */
83982- __u32 ack_seq; /* Sequence number ACK'd */
83983+ __u32 ack_seq __intentional_overflow(0); /* Sequence number ACK'd */
83984 };
83985
83986 #define TCP_SKB_CB(__skb) ((struct tcp_skb_cb *)&((__skb)->cb[0]))
83987diff --git a/include/net/xfrm.h b/include/net/xfrm.h
83988index 116e9c7..3070537 100644
83989--- a/include/net/xfrm.h
83990+++ b/include/net/xfrm.h
83991@@ -285,7 +285,6 @@ struct xfrm_dst;
83992 struct xfrm_policy_afinfo {
83993 unsigned short family;
83994 struct dst_ops *dst_ops;
83995- void (*garbage_collect)(struct net *net);
83996 struct dst_entry *(*dst_lookup)(struct net *net, int tos,
83997 const xfrm_address_t *saddr,
83998 const xfrm_address_t *daddr);
83999@@ -303,7 +302,7 @@ struct xfrm_policy_afinfo {
84000 struct net_device *dev,
84001 const struct flowi *fl);
84002 struct dst_entry *(*blackhole_route)(struct net *net, struct dst_entry *orig);
84003-};
84004+} __do_const;
84005
84006 int xfrm_policy_register_afinfo(struct xfrm_policy_afinfo *afinfo);
84007 int xfrm_policy_unregister_afinfo(struct xfrm_policy_afinfo *afinfo);
84008@@ -342,7 +341,7 @@ struct xfrm_state_afinfo {
84009 int (*transport_finish)(struct sk_buff *skb,
84010 int async);
84011 void (*local_error)(struct sk_buff *skb, u32 mtu);
84012-};
84013+} __do_const;
84014
84015 int xfrm_state_register_afinfo(struct xfrm_state_afinfo *afinfo);
84016 int xfrm_state_unregister_afinfo(struct xfrm_state_afinfo *afinfo);
84017@@ -437,7 +436,7 @@ struct xfrm_mode {
84018 struct module *owner;
84019 unsigned int encap;
84020 int flags;
84021-};
84022+} __do_const;
84023
84024 /* Flags for xfrm_mode. */
84025 enum {
84026@@ -534,7 +533,7 @@ struct xfrm_policy {
84027 struct timer_list timer;
84028
84029 struct flow_cache_object flo;
84030- atomic_t genid;
84031+ atomic_unchecked_t genid;
84032 u32 priority;
84033 u32 index;
84034 struct xfrm_mark mark;
84035@@ -1180,6 +1179,7 @@ static inline void xfrm_sk_free_policy(struct sock *sk)
84036 }
84037
84038 void xfrm_garbage_collect(struct net *net);
84039+void xfrm_garbage_collect_deferred(struct net *net);
84040
84041 #else
84042
84043@@ -1218,6 +1218,9 @@ static inline int xfrm6_policy_check_reverse(struct sock *sk, int dir,
84044 static inline void xfrm_garbage_collect(struct net *net)
84045 {
84046 }
84047+static inline void xfrm_garbage_collect_deferred(struct net *net)
84048+{
84049+}
84050 #endif
84051
84052 static __inline__
84053diff --git a/include/rdma/iw_cm.h b/include/rdma/iw_cm.h
84054index 1017e0b..227aa4d 100644
84055--- a/include/rdma/iw_cm.h
84056+++ b/include/rdma/iw_cm.h
84057@@ -122,7 +122,7 @@ struct iw_cm_verbs {
84058 int backlog);
84059
84060 int (*destroy_listen)(struct iw_cm_id *cm_id);
84061-};
84062+} __no_const;
84063
84064 /**
84065 * iw_create_cm_id - Create an IW CM identifier.
84066diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
84067index 52beadf..598734c 100644
84068--- a/include/scsi/libfc.h
84069+++ b/include/scsi/libfc.h
84070@@ -771,6 +771,7 @@ struct libfc_function_template {
84071 */
84072 void (*disc_stop_final) (struct fc_lport *);
84073 };
84074+typedef struct libfc_function_template __no_const libfc_function_template_no_const;
84075
84076 /**
84077 * struct fc_disc - Discovery context
84078@@ -875,7 +876,7 @@ struct fc_lport {
84079 struct fc_vport *vport;
84080
84081 /* Operational Information */
84082- struct libfc_function_template tt;
84083+ libfc_function_template_no_const tt;
84084 u8 link_up;
84085 u8 qfull;
84086 enum fc_lport_state state;
84087diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h
84088index 5853c91..1e355a8 100644
84089--- a/include/scsi/scsi_device.h
84090+++ b/include/scsi/scsi_device.h
84091@@ -186,9 +186,9 @@ struct scsi_device {
84092 unsigned int max_device_blocked; /* what device_blocked counts down from */
84093 #define SCSI_DEFAULT_DEVICE_BLOCKED 3
84094
84095- atomic_t iorequest_cnt;
84096- atomic_t iodone_cnt;
84097- atomic_t ioerr_cnt;
84098+ atomic_unchecked_t iorequest_cnt;
84099+ atomic_unchecked_t iodone_cnt;
84100+ atomic_unchecked_t ioerr_cnt;
84101
84102 struct device sdev_gendev,
84103 sdev_dev;
84104diff --git a/include/scsi/scsi_transport_fc.h b/include/scsi/scsi_transport_fc.h
84105index 8c79980..723f6f9 100644
84106--- a/include/scsi/scsi_transport_fc.h
84107+++ b/include/scsi/scsi_transport_fc.h
84108@@ -752,7 +752,8 @@ struct fc_function_template {
84109 unsigned long show_host_system_hostname:1;
84110
84111 unsigned long disable_target_scan:1;
84112-};
84113+} __do_const;
84114+typedef struct fc_function_template __no_const fc_function_template_no_const;
84115
84116
84117 /**
84118diff --git a/include/sound/compress_driver.h b/include/sound/compress_driver.h
84119index ae6c3b8..fd748ac 100644
84120--- a/include/sound/compress_driver.h
84121+++ b/include/sound/compress_driver.h
84122@@ -128,7 +128,7 @@ struct snd_compr_ops {
84123 struct snd_compr_caps *caps);
84124 int (*get_codec_caps) (struct snd_compr_stream *stream,
84125 struct snd_compr_codec_caps *codec);
84126-};
84127+} __no_const;
84128
84129 /**
84130 * struct snd_compr: Compressed device
84131diff --git a/include/sound/soc.h b/include/sound/soc.h
84132index 0b83168..d67280a 100644
84133--- a/include/sound/soc.h
84134+++ b/include/sound/soc.h
84135@@ -782,7 +782,7 @@ struct snd_soc_codec_driver {
84136 /* probe ordering - for components with runtime dependencies */
84137 int probe_order;
84138 int remove_order;
84139-};
84140+} __do_const;
84141
84142 /* SoC platform interface */
84143 struct snd_soc_platform_driver {
84144@@ -828,7 +828,7 @@ struct snd_soc_platform_driver {
84145 unsigned int (*read)(struct snd_soc_platform *, unsigned int);
84146 int (*write)(struct snd_soc_platform *, unsigned int, unsigned int);
84147 int (*bespoke_trigger)(struct snd_pcm_substream *, int);
84148-};
84149+} __do_const;
84150
84151 struct snd_soc_platform {
84152 const char *name;
84153diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h
84154index 9ec9864..e2ee1ee 100644
84155--- a/include/target/target_core_base.h
84156+++ b/include/target/target_core_base.h
84157@@ -761,7 +761,7 @@ struct se_device {
84158 atomic_long_t write_bytes;
84159 /* Active commands on this virtual SE device */
84160 atomic_t simple_cmds;
84161- atomic_t dev_ordered_id;
84162+ atomic_unchecked_t dev_ordered_id;
84163 atomic_t dev_ordered_sync;
84164 atomic_t dev_qf_count;
84165 int export_count;
84166diff --git a/include/trace/events/fs.h b/include/trace/events/fs.h
84167new file mode 100644
84168index 0000000..fb634b7
84169--- /dev/null
84170+++ b/include/trace/events/fs.h
84171@@ -0,0 +1,53 @@
84172+#undef TRACE_SYSTEM
84173+#define TRACE_SYSTEM fs
84174+
84175+#if !defined(_TRACE_FS_H) || defined(TRACE_HEADER_MULTI_READ)
84176+#define _TRACE_FS_H
84177+
84178+#include <linux/fs.h>
84179+#include <linux/tracepoint.h>
84180+
84181+TRACE_EVENT(do_sys_open,
84182+
84183+ TP_PROTO(const char *filename, int flags, int mode),
84184+
84185+ TP_ARGS(filename, flags, mode),
84186+
84187+ TP_STRUCT__entry(
84188+ __string( filename, filename )
84189+ __field( int, flags )
84190+ __field( int, mode )
84191+ ),
84192+
84193+ TP_fast_assign(
84194+ __assign_str(filename, filename);
84195+ __entry->flags = flags;
84196+ __entry->mode = mode;
84197+ ),
84198+
84199+ TP_printk("\"%s\" %x %o",
84200+ __get_str(filename), __entry->flags, __entry->mode)
84201+);
84202+
84203+TRACE_EVENT(open_exec,
84204+
84205+ TP_PROTO(const char *filename),
84206+
84207+ TP_ARGS(filename),
84208+
84209+ TP_STRUCT__entry(
84210+ __string( filename, filename )
84211+ ),
84212+
84213+ TP_fast_assign(
84214+ __assign_str(filename, filename);
84215+ ),
84216+
84217+ TP_printk("\"%s\"",
84218+ __get_str(filename))
84219+);
84220+
84221+#endif /* _TRACE_FS_H */
84222+
84223+/* This part must be outside protection */
84224+#include <trace/define_trace.h>
84225diff --git a/include/trace/events/irq.h b/include/trace/events/irq.h
84226index 1c09820..7f5ec79 100644
84227--- a/include/trace/events/irq.h
84228+++ b/include/trace/events/irq.h
84229@@ -36,7 +36,7 @@ struct softirq_action;
84230 */
84231 TRACE_EVENT(irq_handler_entry,
84232
84233- TP_PROTO(int irq, struct irqaction *action),
84234+ TP_PROTO(int irq, const struct irqaction *action),
84235
84236 TP_ARGS(irq, action),
84237
84238@@ -66,7 +66,7 @@ TRACE_EVENT(irq_handler_entry,
84239 */
84240 TRACE_EVENT(irq_handler_exit,
84241
84242- TP_PROTO(int irq, struct irqaction *action, int ret),
84243+ TP_PROTO(int irq, const struct irqaction *action, int ret),
84244
84245 TP_ARGS(irq, action, ret),
84246
84247diff --git a/include/uapi/linux/a.out.h b/include/uapi/linux/a.out.h
84248index 7caf44c..23c6f27 100644
84249--- a/include/uapi/linux/a.out.h
84250+++ b/include/uapi/linux/a.out.h
84251@@ -39,6 +39,14 @@ enum machine_type {
84252 M_MIPS2 = 152 /* MIPS R6000/R4000 binary */
84253 };
84254
84255+/* Constants for the N_FLAGS field */
84256+#define F_PAX_PAGEEXEC 1 /* Paging based non-executable pages */
84257+#define F_PAX_EMUTRAMP 2 /* Emulate trampolines */
84258+#define F_PAX_MPROTECT 4 /* Restrict mprotect() */
84259+#define F_PAX_RANDMMAP 8 /* Randomize mmap() base */
84260+/*#define F_PAX_RANDEXEC 16*/ /* Randomize ET_EXEC base */
84261+#define F_PAX_SEGMEXEC 32 /* Segmentation based non-executable pages */
84262+
84263 #if !defined (N_MAGIC)
84264 #define N_MAGIC(exec) ((exec).a_info & 0xffff)
84265 #endif
84266diff --git a/include/uapi/linux/bcache.h b/include/uapi/linux/bcache.h
84267index 22b6ad3..aeba37e 100644
84268--- a/include/uapi/linux/bcache.h
84269+++ b/include/uapi/linux/bcache.h
84270@@ -5,6 +5,7 @@
84271 * Bcache on disk data structures
84272 */
84273
84274+#include <linux/compiler.h>
84275 #include <asm/types.h>
84276
84277 #define BITMASK(name, type, field, offset, size) \
84278@@ -20,8 +21,8 @@ static inline void SET_##name(type *k, __u64 v) \
84279 /* Btree keys - all units are in sectors */
84280
84281 struct bkey {
84282- __u64 high;
84283- __u64 low;
84284+ __u64 high __intentional_overflow(-1);
84285+ __u64 low __intentional_overflow(-1);
84286 __u64 ptr[];
84287 };
84288
84289diff --git a/include/uapi/linux/byteorder/little_endian.h b/include/uapi/linux/byteorder/little_endian.h
84290index d876736..ccce5c0 100644
84291--- a/include/uapi/linux/byteorder/little_endian.h
84292+++ b/include/uapi/linux/byteorder/little_endian.h
84293@@ -42,51 +42,51 @@
84294
84295 static inline __le64 __cpu_to_le64p(const __u64 *p)
84296 {
84297- return (__force __le64)*p;
84298+ return (__force const __le64)*p;
84299 }
84300-static inline __u64 __le64_to_cpup(const __le64 *p)
84301+static inline __u64 __intentional_overflow(-1) __le64_to_cpup(const __le64 *p)
84302 {
84303- return (__force __u64)*p;
84304+ return (__force const __u64)*p;
84305 }
84306 static inline __le32 __cpu_to_le32p(const __u32 *p)
84307 {
84308- return (__force __le32)*p;
84309+ return (__force const __le32)*p;
84310 }
84311 static inline __u32 __le32_to_cpup(const __le32 *p)
84312 {
84313- return (__force __u32)*p;
84314+ return (__force const __u32)*p;
84315 }
84316 static inline __le16 __cpu_to_le16p(const __u16 *p)
84317 {
84318- return (__force __le16)*p;
84319+ return (__force const __le16)*p;
84320 }
84321 static inline __u16 __le16_to_cpup(const __le16 *p)
84322 {
84323- return (__force __u16)*p;
84324+ return (__force const __u16)*p;
84325 }
84326 static inline __be64 __cpu_to_be64p(const __u64 *p)
84327 {
84328- return (__force __be64)__swab64p(p);
84329+ return (__force const __be64)__swab64p(p);
84330 }
84331 static inline __u64 __be64_to_cpup(const __be64 *p)
84332 {
84333- return __swab64p((__u64 *)p);
84334+ return __swab64p((const __u64 *)p);
84335 }
84336 static inline __be32 __cpu_to_be32p(const __u32 *p)
84337 {
84338- return (__force __be32)__swab32p(p);
84339+ return (__force const __be32)__swab32p(p);
84340 }
84341-static inline __u32 __be32_to_cpup(const __be32 *p)
84342+static inline __u32 __intentional_overflow(-1) __be32_to_cpup(const __be32 *p)
84343 {
84344- return __swab32p((__u32 *)p);
84345+ return __swab32p((const __u32 *)p);
84346 }
84347 static inline __be16 __cpu_to_be16p(const __u16 *p)
84348 {
84349- return (__force __be16)__swab16p(p);
84350+ return (__force const __be16)__swab16p(p);
84351 }
84352 static inline __u16 __be16_to_cpup(const __be16 *p)
84353 {
84354- return __swab16p((__u16 *)p);
84355+ return __swab16p((const __u16 *)p);
84356 }
84357 #define __cpu_to_le64s(x) do { (void)(x); } while (0)
84358 #define __le64_to_cpus(x) do { (void)(x); } while (0)
84359diff --git a/include/uapi/linux/elf.h b/include/uapi/linux/elf.h
84360index ef6103b..d4e65dd 100644
84361--- a/include/uapi/linux/elf.h
84362+++ b/include/uapi/linux/elf.h
84363@@ -37,6 +37,17 @@ typedef __s64 Elf64_Sxword;
84364 #define PT_GNU_EH_FRAME 0x6474e550
84365
84366 #define PT_GNU_STACK (PT_LOOS + 0x474e551)
84367+#define PT_GNU_RELRO (PT_LOOS + 0x474e552)
84368+
84369+#define PT_PAX_FLAGS (PT_LOOS + 0x5041580)
84370+
84371+/* Constants for the e_flags field */
84372+#define EF_PAX_PAGEEXEC 1 /* Paging based non-executable pages */
84373+#define EF_PAX_EMUTRAMP 2 /* Emulate trampolines */
84374+#define EF_PAX_MPROTECT 4 /* Restrict mprotect() */
84375+#define EF_PAX_RANDMMAP 8 /* Randomize mmap() base */
84376+/*#define EF_PAX_RANDEXEC 16*/ /* Randomize ET_EXEC base */
84377+#define EF_PAX_SEGMEXEC 32 /* Segmentation based non-executable pages */
84378
84379 /*
84380 * Extended Numbering
84381@@ -94,6 +105,8 @@ typedef __s64 Elf64_Sxword;
84382 #define DT_DEBUG 21
84383 #define DT_TEXTREL 22
84384 #define DT_JMPREL 23
84385+#define DT_FLAGS 30
84386+ #define DF_TEXTREL 0x00000004
84387 #define DT_ENCODING 32
84388 #define OLD_DT_LOOS 0x60000000
84389 #define DT_LOOS 0x6000000d
84390@@ -240,6 +253,19 @@ typedef struct elf64_hdr {
84391 #define PF_W 0x2
84392 #define PF_X 0x1
84393
84394+#define PF_PAGEEXEC (1U << 4) /* Enable PAGEEXEC */
84395+#define PF_NOPAGEEXEC (1U << 5) /* Disable PAGEEXEC */
84396+#define PF_SEGMEXEC (1U << 6) /* Enable SEGMEXEC */
84397+#define PF_NOSEGMEXEC (1U << 7) /* Disable SEGMEXEC */
84398+#define PF_MPROTECT (1U << 8) /* Enable MPROTECT */
84399+#define PF_NOMPROTECT (1U << 9) /* Disable MPROTECT */
84400+/*#define PF_RANDEXEC (1U << 10)*/ /* Enable RANDEXEC */
84401+/*#define PF_NORANDEXEC (1U << 11)*/ /* Disable RANDEXEC */
84402+#define PF_EMUTRAMP (1U << 12) /* Enable EMUTRAMP */
84403+#define PF_NOEMUTRAMP (1U << 13) /* Disable EMUTRAMP */
84404+#define PF_RANDMMAP (1U << 14) /* Enable RANDMMAP */
84405+#define PF_NORANDMMAP (1U << 15) /* Disable RANDMMAP */
84406+
84407 typedef struct elf32_phdr{
84408 Elf32_Word p_type;
84409 Elf32_Off p_offset;
84410@@ -332,6 +358,8 @@ typedef struct elf64_shdr {
84411 #define EI_OSABI 7
84412 #define EI_PAD 8
84413
84414+#define EI_PAX 14
84415+
84416 #define ELFMAG0 0x7f /* EI_MAG */
84417 #define ELFMAG1 'E'
84418 #define ELFMAG2 'L'
84419diff --git a/include/uapi/linux/personality.h b/include/uapi/linux/personality.h
84420index aa169c4..6a2771d 100644
84421--- a/include/uapi/linux/personality.h
84422+++ b/include/uapi/linux/personality.h
84423@@ -30,6 +30,7 @@ enum {
84424 #define PER_CLEAR_ON_SETID (READ_IMPLIES_EXEC | \
84425 ADDR_NO_RANDOMIZE | \
84426 ADDR_COMPAT_LAYOUT | \
84427+ ADDR_LIMIT_3GB | \
84428 MMAP_PAGE_ZERO)
84429
84430 /*
84431diff --git a/include/uapi/linux/screen_info.h b/include/uapi/linux/screen_info.h
84432index 7530e74..e714828 100644
84433--- a/include/uapi/linux/screen_info.h
84434+++ b/include/uapi/linux/screen_info.h
84435@@ -43,7 +43,8 @@ struct screen_info {
84436 __u16 pages; /* 0x32 */
84437 __u16 vesa_attributes; /* 0x34 */
84438 __u32 capabilities; /* 0x36 */
84439- __u8 _reserved[6]; /* 0x3a */
84440+ __u16 vesapm_size; /* 0x3a */
84441+ __u8 _reserved[4]; /* 0x3c */
84442 } __attribute__((packed));
84443
84444 #define VIDEO_TYPE_MDA 0x10 /* Monochrome Text Display */
84445diff --git a/include/uapi/linux/swab.h b/include/uapi/linux/swab.h
84446index 0e011eb..82681b1 100644
84447--- a/include/uapi/linux/swab.h
84448+++ b/include/uapi/linux/swab.h
84449@@ -43,7 +43,7 @@
84450 * ___swab16, ___swab32, ___swab64, ___swahw32, ___swahb32
84451 */
84452
84453-static inline __attribute_const__ __u16 __fswab16(__u16 val)
84454+static inline __intentional_overflow(-1) __attribute_const__ __u16 __fswab16(__u16 val)
84455 {
84456 #ifdef __HAVE_BUILTIN_BSWAP16__
84457 return __builtin_bswap16(val);
84458@@ -54,7 +54,7 @@ static inline __attribute_const__ __u16 __fswab16(__u16 val)
84459 #endif
84460 }
84461
84462-static inline __attribute_const__ __u32 __fswab32(__u32 val)
84463+static inline __intentional_overflow(-1) __attribute_const__ __u32 __fswab32(__u32 val)
84464 {
84465 #ifdef __HAVE_BUILTIN_BSWAP32__
84466 return __builtin_bswap32(val);
84467@@ -65,7 +65,7 @@ static inline __attribute_const__ __u32 __fswab32(__u32 val)
84468 #endif
84469 }
84470
84471-static inline __attribute_const__ __u64 __fswab64(__u64 val)
84472+static inline __intentional_overflow(-1) __attribute_const__ __u64 __fswab64(__u64 val)
84473 {
84474 #ifdef __HAVE_BUILTIN_BSWAP64__
84475 return __builtin_bswap64(val);
84476diff --git a/include/uapi/linux/sysctl.h b/include/uapi/linux/sysctl.h
84477index 6d67213..552fdd9 100644
84478--- a/include/uapi/linux/sysctl.h
84479+++ b/include/uapi/linux/sysctl.h
84480@@ -155,8 +155,6 @@ enum
84481 KERN_PANIC_ON_NMI=76, /* int: whether we will panic on an unrecovered */
84482 };
84483
84484-
84485-
84486 /* CTL_VM names: */
84487 enum
84488 {
84489diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
84490index ea468ee..4d367a5 100644
84491--- a/include/uapi/linux/videodev2.h
84492+++ b/include/uapi/linux/videodev2.h
84493@@ -1248,7 +1248,7 @@ struct v4l2_ext_control {
84494 union {
84495 __s32 value;
84496 __s64 value64;
84497- char *string;
84498+ char __user *string;
84499 };
84500 } __attribute__ ((packed));
84501
84502diff --git a/include/uapi/linux/xattr.h b/include/uapi/linux/xattr.h
84503index c38355c..17a57bc 100644
84504--- a/include/uapi/linux/xattr.h
84505+++ b/include/uapi/linux/xattr.h
84506@@ -73,5 +73,9 @@
84507 #define XATTR_POSIX_ACL_DEFAULT "posix_acl_default"
84508 #define XATTR_NAME_POSIX_ACL_DEFAULT XATTR_SYSTEM_PREFIX XATTR_POSIX_ACL_DEFAULT
84509
84510+/* User namespace */
84511+#define XATTR_PAX_PREFIX XATTR_USER_PREFIX "pax."
84512+#define XATTR_PAX_FLAGS_SUFFIX "flags"
84513+#define XATTR_NAME_PAX_FLAGS XATTR_PAX_PREFIX XATTR_PAX_FLAGS_SUFFIX
84514
84515 #endif /* _UAPI_LINUX_XATTR_H */
84516diff --git a/include/video/udlfb.h b/include/video/udlfb.h
84517index f9466fa..f4e2b81 100644
84518--- a/include/video/udlfb.h
84519+++ b/include/video/udlfb.h
84520@@ -53,10 +53,10 @@ struct dlfb_data {
84521 u32 pseudo_palette[256];
84522 int blank_mode; /*one of FB_BLANK_ */
84523 /* blit-only rendering path metrics, exposed through sysfs */
84524- atomic_t bytes_rendered; /* raw pixel-bytes driver asked to render */
84525- atomic_t bytes_identical; /* saved effort with backbuffer comparison */
84526- atomic_t bytes_sent; /* to usb, after compression including overhead */
84527- atomic_t cpu_kcycles_used; /* transpired during pixel processing */
84528+ atomic_unchecked_t bytes_rendered; /* raw pixel-bytes driver asked to render */
84529+ atomic_unchecked_t bytes_identical; /* saved effort with backbuffer comparison */
84530+ atomic_unchecked_t bytes_sent; /* to usb, after compression including overhead */
84531+ atomic_unchecked_t cpu_kcycles_used; /* transpired during pixel processing */
84532 };
84533
84534 #define NR_USB_REQUEST_I2C_SUB_IO 0x02
84535diff --git a/include/video/uvesafb.h b/include/video/uvesafb.h
84536index 30f5362..8ed8ac9 100644
84537--- a/include/video/uvesafb.h
84538+++ b/include/video/uvesafb.h
84539@@ -122,6 +122,7 @@ struct uvesafb_par {
84540 u8 ypan; /* 0 - nothing, 1 - ypan, 2 - ywrap */
84541 u8 pmi_setpal; /* PMI for palette changes */
84542 u16 *pmi_base; /* protected mode interface location */
84543+ u8 *pmi_code; /* protected mode code location */
84544 void *pmi_start;
84545 void *pmi_pal;
84546 u8 *vbe_state_orig; /*
84547diff --git a/init/Kconfig b/init/Kconfig
84548index 9d3585b..ad45d34 100644
84549--- a/init/Kconfig
84550+++ b/init/Kconfig
84551@@ -1093,6 +1093,7 @@ endif # CGROUPS
84552
84553 config CHECKPOINT_RESTORE
84554 bool "Checkpoint/restore support" if EXPERT
84555+ depends on !GRKERNSEC
84556 default n
84557 help
84558 Enables additional kernel features in a sake of checkpoint/restore.
84559@@ -1570,7 +1571,7 @@ config SLUB_DEBUG
84560
84561 config COMPAT_BRK
84562 bool "Disable heap randomization"
84563- default y
84564+ default n
84565 help
84566 Randomizing heap placement makes heap exploits harder, but it
84567 also breaks ancient binaries (including anything libc5 based).
84568@@ -1858,7 +1859,7 @@ config INIT_ALL_POSSIBLE
84569 config STOP_MACHINE
84570 bool
84571 default y
84572- depends on (SMP && MODULE_UNLOAD) || HOTPLUG_CPU
84573+ depends on (SMP && MODULE_UNLOAD) || HOTPLUG_CPU || GRKERNSEC
84574 help
84575 Need stop_machine() primitive.
84576
84577diff --git a/init/Makefile b/init/Makefile
84578index 7bc47ee..6da2dc7 100644
84579--- a/init/Makefile
84580+++ b/init/Makefile
84581@@ -2,6 +2,9 @@
84582 # Makefile for the linux kernel.
84583 #
84584
84585+ccflags-y := $(GCC_PLUGINS_CFLAGS)
84586+asflags-y := $(GCC_PLUGINS_AFLAGS)
84587+
84588 obj-y := main.o version.o mounts.o
84589 ifneq ($(CONFIG_BLK_DEV_INITRD),y)
84590 obj-y += noinitramfs.o
84591diff --git a/init/do_mounts.c b/init/do_mounts.c
84592index 82f2288..ea1430a 100644
84593--- a/init/do_mounts.c
84594+++ b/init/do_mounts.c
84595@@ -359,11 +359,11 @@ static void __init get_fs_names(char *page)
84596 static int __init do_mount_root(char *name, char *fs, int flags, void *data)
84597 {
84598 struct super_block *s;
84599- int err = sys_mount(name, "/root", fs, flags, data);
84600+ int err = sys_mount((char __force_user *)name, (char __force_user *)"/root", (char __force_user *)fs, flags, (void __force_user *)data);
84601 if (err)
84602 return err;
84603
84604- sys_chdir("/root");
84605+ sys_chdir((const char __force_user *)"/root");
84606 s = current->fs->pwd.dentry->d_sb;
84607 ROOT_DEV = s->s_dev;
84608 printk(KERN_INFO
84609@@ -484,18 +484,18 @@ void __init change_floppy(char *fmt, ...)
84610 va_start(args, fmt);
84611 vsprintf(buf, fmt, args);
84612 va_end(args);
84613- fd = sys_open("/dev/root", O_RDWR | O_NDELAY, 0);
84614+ fd = sys_open((char __user *)"/dev/root", O_RDWR | O_NDELAY, 0);
84615 if (fd >= 0) {
84616 sys_ioctl(fd, FDEJECT, 0);
84617 sys_close(fd);
84618 }
84619 printk(KERN_NOTICE "VFS: Insert %s and press ENTER\n", buf);
84620- fd = sys_open("/dev/console", O_RDWR, 0);
84621+ fd = sys_open((__force const char __user *)"/dev/console", O_RDWR, 0);
84622 if (fd >= 0) {
84623 sys_ioctl(fd, TCGETS, (long)&termios);
84624 termios.c_lflag &= ~ICANON;
84625 sys_ioctl(fd, TCSETSF, (long)&termios);
84626- sys_read(fd, &c, 1);
84627+ sys_read(fd, (char __user *)&c, 1);
84628 termios.c_lflag |= ICANON;
84629 sys_ioctl(fd, TCSETSF, (long)&termios);
84630 sys_close(fd);
84631@@ -589,8 +589,8 @@ void __init prepare_namespace(void)
84632 mount_root();
84633 out:
84634 devtmpfs_mount("dev");
84635- sys_mount(".", "/", NULL, MS_MOVE, NULL);
84636- sys_chroot(".");
84637+ sys_mount((char __force_user *)".", (char __force_user *)"/", NULL, MS_MOVE, NULL);
84638+ sys_chroot((const char __force_user *)".");
84639 }
84640
84641 static bool is_tmpfs;
84642diff --git a/init/do_mounts.h b/init/do_mounts.h
84643index f5b978a..69dbfe8 100644
84644--- a/init/do_mounts.h
84645+++ b/init/do_mounts.h
84646@@ -15,15 +15,15 @@ extern int root_mountflags;
84647
84648 static inline int create_dev(char *name, dev_t dev)
84649 {
84650- sys_unlink(name);
84651- return sys_mknod(name, S_IFBLK|0600, new_encode_dev(dev));
84652+ sys_unlink((char __force_user *)name);
84653+ return sys_mknod((char __force_user *)name, S_IFBLK|0600, new_encode_dev(dev));
84654 }
84655
84656 #if BITS_PER_LONG == 32
84657 static inline u32 bstat(char *name)
84658 {
84659 struct stat64 stat;
84660- if (sys_stat64(name, &stat) != 0)
84661+ if (sys_stat64((char __force_user *)name, (struct stat64 __force_user *)&stat) != 0)
84662 return 0;
84663 if (!S_ISBLK(stat.st_mode))
84664 return 0;
84665@@ -35,7 +35,7 @@ static inline u32 bstat(char *name)
84666 static inline u32 bstat(char *name)
84667 {
84668 struct stat stat;
84669- if (sys_newstat(name, &stat) != 0)
84670+ if (sys_newstat((const char __force_user *)name, (struct stat __force_user *)&stat) != 0)
84671 return 0;
84672 if (!S_ISBLK(stat.st_mode))
84673 return 0;
84674diff --git a/init/do_mounts_initrd.c b/init/do_mounts_initrd.c
84675index 3e0878e..8a9d7a0 100644
84676--- a/init/do_mounts_initrd.c
84677+++ b/init/do_mounts_initrd.c
84678@@ -37,13 +37,13 @@ static int init_linuxrc(struct subprocess_info *info, struct cred *new)
84679 {
84680 sys_unshare(CLONE_FS | CLONE_FILES);
84681 /* stdin/stdout/stderr for /linuxrc */
84682- sys_open("/dev/console", O_RDWR, 0);
84683+ sys_open((const char __force_user *)"/dev/console", O_RDWR, 0);
84684 sys_dup(0);
84685 sys_dup(0);
84686 /* move initrd over / and chdir/chroot in initrd root */
84687- sys_chdir("/root");
84688- sys_mount(".", "/", NULL, MS_MOVE, NULL);
84689- sys_chroot(".");
84690+ sys_chdir((const char __force_user *)"/root");
84691+ sys_mount((char __force_user *)".", (char __force_user *)"/", NULL, MS_MOVE, NULL);
84692+ sys_chroot((const char __force_user *)".");
84693 sys_setsid();
84694 return 0;
84695 }
84696@@ -59,8 +59,8 @@ static void __init handle_initrd(void)
84697 create_dev("/dev/root.old", Root_RAM0);
84698 /* mount initrd on rootfs' /root */
84699 mount_block_root("/dev/root.old", root_mountflags & ~MS_RDONLY);
84700- sys_mkdir("/old", 0700);
84701- sys_chdir("/old");
84702+ sys_mkdir((const char __force_user *)"/old", 0700);
84703+ sys_chdir((const char __force_user *)"/old");
84704
84705 /* try loading default modules from initrd */
84706 load_default_modules();
84707@@ -80,31 +80,31 @@ static void __init handle_initrd(void)
84708 current->flags &= ~PF_FREEZER_SKIP;
84709
84710 /* move initrd to rootfs' /old */
84711- sys_mount("..", ".", NULL, MS_MOVE, NULL);
84712+ sys_mount((char __force_user *)"..", (char __force_user *)".", NULL, MS_MOVE, NULL);
84713 /* switch root and cwd back to / of rootfs */
84714- sys_chroot("..");
84715+ sys_chroot((const char __force_user *)"..");
84716
84717 if (new_decode_dev(real_root_dev) == Root_RAM0) {
84718- sys_chdir("/old");
84719+ sys_chdir((const char __force_user *)"/old");
84720 return;
84721 }
84722
84723- sys_chdir("/");
84724+ sys_chdir((const char __force_user *)"/");
84725 ROOT_DEV = new_decode_dev(real_root_dev);
84726 mount_root();
84727
84728 printk(KERN_NOTICE "Trying to move old root to /initrd ... ");
84729- error = sys_mount("/old", "/root/initrd", NULL, MS_MOVE, NULL);
84730+ error = sys_mount((char __force_user *)"/old", (char __force_user *)"/root/initrd", NULL, MS_MOVE, NULL);
84731 if (!error)
84732 printk("okay\n");
84733 else {
84734- int fd = sys_open("/dev/root.old", O_RDWR, 0);
84735+ int fd = sys_open((const char __force_user *)"/dev/root.old", O_RDWR, 0);
84736 if (error == -ENOENT)
84737 printk("/initrd does not exist. Ignored.\n");
84738 else
84739 printk("failed\n");
84740 printk(KERN_NOTICE "Unmounting old root\n");
84741- sys_umount("/old", MNT_DETACH);
84742+ sys_umount((char __force_user *)"/old", MNT_DETACH);
84743 printk(KERN_NOTICE "Trying to free ramdisk memory ... ");
84744 if (fd < 0) {
84745 error = fd;
84746@@ -127,11 +127,11 @@ int __init initrd_load(void)
84747 * mounted in the normal path.
84748 */
84749 if (rd_load_image("/initrd.image") && ROOT_DEV != Root_RAM0) {
84750- sys_unlink("/initrd.image");
84751+ sys_unlink((const char __force_user *)"/initrd.image");
84752 handle_initrd();
84753 return 1;
84754 }
84755 }
84756- sys_unlink("/initrd.image");
84757+ sys_unlink((const char __force_user *)"/initrd.image");
84758 return 0;
84759 }
84760diff --git a/init/do_mounts_md.c b/init/do_mounts_md.c
84761index 8cb6db5..d729f50 100644
84762--- a/init/do_mounts_md.c
84763+++ b/init/do_mounts_md.c
84764@@ -180,7 +180,7 @@ static void __init md_setup_drive(void)
84765 partitioned ? "_d" : "", minor,
84766 md_setup_args[ent].device_names);
84767
84768- fd = sys_open(name, 0, 0);
84769+ fd = sys_open((char __force_user *)name, 0, 0);
84770 if (fd < 0) {
84771 printk(KERN_ERR "md: open failed - cannot start "
84772 "array %s\n", name);
84773@@ -243,7 +243,7 @@ static void __init md_setup_drive(void)
84774 * array without it
84775 */
84776 sys_close(fd);
84777- fd = sys_open(name, 0, 0);
84778+ fd = sys_open((char __force_user *)name, 0, 0);
84779 sys_ioctl(fd, BLKRRPART, 0);
84780 }
84781 sys_close(fd);
84782@@ -293,7 +293,7 @@ static void __init autodetect_raid(void)
84783
84784 wait_for_device_probe();
84785
84786- fd = sys_open("/dev/md0", 0, 0);
84787+ fd = sys_open((const char __force_user *) "/dev/md0", 0, 0);
84788 if (fd >= 0) {
84789 sys_ioctl(fd, RAID_AUTORUN, raid_autopart);
84790 sys_close(fd);
84791diff --git a/init/init_task.c b/init/init_task.c
84792index ba0a7f36..2bcf1d5 100644
84793--- a/init/init_task.c
84794+++ b/init/init_task.c
84795@@ -22,5 +22,9 @@ EXPORT_SYMBOL(init_task);
84796 * Initial thread structure. Alignment of this is handled by a special
84797 * linker map entry.
84798 */
84799+#ifdef CONFIG_X86
84800+union thread_union init_thread_union __init_task_data;
84801+#else
84802 union thread_union init_thread_union __init_task_data =
84803 { INIT_THREAD_INFO(init_task) };
84804+#endif
84805diff --git a/init/initramfs.c b/init/initramfs.c
84806index a8497fa..35b3c90 100644
84807--- a/init/initramfs.c
84808+++ b/init/initramfs.c
84809@@ -84,7 +84,7 @@ static void __init free_hash(void)
84810 }
84811 }
84812
84813-static long __init do_utime(char *filename, time_t mtime)
84814+static long __init do_utime(char __force_user *filename, time_t mtime)
84815 {
84816 struct timespec t[2];
84817
84818@@ -119,7 +119,7 @@ static void __init dir_utime(void)
84819 struct dir_entry *de, *tmp;
84820 list_for_each_entry_safe(de, tmp, &dir_list, list) {
84821 list_del(&de->list);
84822- do_utime(de->name, de->mtime);
84823+ do_utime((char __force_user *)de->name, de->mtime);
84824 kfree(de->name);
84825 kfree(de);
84826 }
84827@@ -281,7 +281,7 @@ static int __init maybe_link(void)
84828 if (nlink >= 2) {
84829 char *old = find_link(major, minor, ino, mode, collected);
84830 if (old)
84831- return (sys_link(old, collected) < 0) ? -1 : 1;
84832+ return (sys_link((char __force_user *)old, (char __force_user *)collected) < 0) ? -1 : 1;
84833 }
84834 return 0;
84835 }
84836@@ -290,11 +290,11 @@ static void __init clean_path(char *path, umode_t mode)
84837 {
84838 struct stat st;
84839
84840- if (!sys_newlstat(path, &st) && (st.st_mode^mode) & S_IFMT) {
84841+ if (!sys_newlstat((char __force_user *)path, (struct stat __force_user *)&st) && (st.st_mode^mode) & S_IFMT) {
84842 if (S_ISDIR(st.st_mode))
84843- sys_rmdir(path);
84844+ sys_rmdir((char __force_user *)path);
84845 else
84846- sys_unlink(path);
84847+ sys_unlink((char __force_user *)path);
84848 }
84849 }
84850
84851@@ -315,7 +315,7 @@ static int __init do_name(void)
84852 int openflags = O_WRONLY|O_CREAT;
84853 if (ml != 1)
84854 openflags |= O_TRUNC;
84855- wfd = sys_open(collected, openflags, mode);
84856+ wfd = sys_open((char __force_user *)collected, openflags, mode);
84857
84858 if (wfd >= 0) {
84859 sys_fchown(wfd, uid, gid);
84860@@ -327,17 +327,17 @@ static int __init do_name(void)
84861 }
84862 }
84863 } else if (S_ISDIR(mode)) {
84864- sys_mkdir(collected, mode);
84865- sys_chown(collected, uid, gid);
84866- sys_chmod(collected, mode);
84867+ sys_mkdir((char __force_user *)collected, mode);
84868+ sys_chown((char __force_user *)collected, uid, gid);
84869+ sys_chmod((char __force_user *)collected, mode);
84870 dir_add(collected, mtime);
84871 } else if (S_ISBLK(mode) || S_ISCHR(mode) ||
84872 S_ISFIFO(mode) || S_ISSOCK(mode)) {
84873 if (maybe_link() == 0) {
84874- sys_mknod(collected, mode, rdev);
84875- sys_chown(collected, uid, gid);
84876- sys_chmod(collected, mode);
84877- do_utime(collected, mtime);
84878+ sys_mknod((char __force_user *)collected, mode, rdev);
84879+ sys_chown((char __force_user *)collected, uid, gid);
84880+ sys_chmod((char __force_user *)collected, mode);
84881+ do_utime((char __force_user *)collected, mtime);
84882 }
84883 }
84884 return 0;
84885@@ -346,15 +346,15 @@ static int __init do_name(void)
84886 static int __init do_copy(void)
84887 {
84888 if (count >= body_len) {
84889- sys_write(wfd, victim, body_len);
84890+ sys_write(wfd, (char __force_user *)victim, body_len);
84891 sys_close(wfd);
84892- do_utime(vcollected, mtime);
84893+ do_utime((char __force_user *)vcollected, mtime);
84894 kfree(vcollected);
84895 eat(body_len);
84896 state = SkipIt;
84897 return 0;
84898 } else {
84899- sys_write(wfd, victim, count);
84900+ sys_write(wfd, (char __force_user *)victim, count);
84901 body_len -= count;
84902 eat(count);
84903 return 1;
84904@@ -365,9 +365,9 @@ static int __init do_symlink(void)
84905 {
84906 collected[N_ALIGN(name_len) + body_len] = '\0';
84907 clean_path(collected, 0);
84908- sys_symlink(collected + N_ALIGN(name_len), collected);
84909- sys_lchown(collected, uid, gid);
84910- do_utime(collected, mtime);
84911+ sys_symlink((char __force_user *)collected + N_ALIGN(name_len), (char __force_user *)collected);
84912+ sys_lchown((char __force_user *)collected, uid, gid);
84913+ do_utime((char __force_user *)collected, mtime);
84914 state = SkipIt;
84915 next_state = Reset;
84916 return 0;
84917diff --git a/init/main.c b/init/main.c
84918index 48655ce..d0113e4 100644
84919--- a/init/main.c
84920+++ b/init/main.c
84921@@ -97,6 +97,8 @@ extern void radix_tree_init(void);
84922 static inline void mark_rodata_ro(void) { }
84923 #endif
84924
84925+extern void grsecurity_init(void);
84926+
84927 /*
84928 * Debug helper: via this flag we know that we are in 'early bootup code'
84929 * where only the boot processor is running with IRQ disabled. This means
84930@@ -158,6 +160,75 @@ static int __init set_reset_devices(char *str)
84931
84932 __setup("reset_devices", set_reset_devices);
84933
84934+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
84935+kgid_t grsec_proc_gid = KGIDT_INIT(CONFIG_GRKERNSEC_PROC_GID);
84936+static int __init setup_grsec_proc_gid(char *str)
84937+{
84938+ grsec_proc_gid = KGIDT_INIT(simple_strtol(str, NULL, 0));
84939+ return 1;
84940+}
84941+__setup("grsec_proc_gid=", setup_grsec_proc_gid);
84942+#endif
84943+
84944+#if defined(CONFIG_X86_64) && defined(CONFIG_PAX_MEMORY_UDEREF)
84945+unsigned long pax_user_shadow_base __read_only;
84946+EXPORT_SYMBOL(pax_user_shadow_base);
84947+extern char pax_enter_kernel_user[];
84948+extern char pax_exit_kernel_user[];
84949+#endif
84950+
84951+#if defined(CONFIG_X86) && defined(CONFIG_PAX_MEMORY_UDEREF)
84952+static int __init setup_pax_nouderef(char *str)
84953+{
84954+#ifdef CONFIG_X86_32
84955+ unsigned int cpu;
84956+ struct desc_struct *gdt;
84957+
84958+ for (cpu = 0; cpu < nr_cpu_ids; cpu++) {
84959+ gdt = get_cpu_gdt_table(cpu);
84960+ gdt[GDT_ENTRY_KERNEL_DS].type = 3;
84961+ gdt[GDT_ENTRY_KERNEL_DS].limit = 0xf;
84962+ gdt[GDT_ENTRY_DEFAULT_USER_CS].limit = 0xf;
84963+ gdt[GDT_ENTRY_DEFAULT_USER_DS].limit = 0xf;
84964+ }
84965+ loadsegment(ds, __KERNEL_DS);
84966+ loadsegment(es, __KERNEL_DS);
84967+ loadsegment(ss, __KERNEL_DS);
84968+#else
84969+ memcpy(pax_enter_kernel_user, (unsigned char []){0xc3}, 1);
84970+ memcpy(pax_exit_kernel_user, (unsigned char []){0xc3}, 1);
84971+ clone_pgd_mask = ~(pgdval_t)0UL;
84972+ pax_user_shadow_base = 0UL;
84973+ setup_clear_cpu_cap(X86_FEATURE_PCID);
84974+ setup_clear_cpu_cap(X86_FEATURE_INVPCID);
84975+#endif
84976+
84977+ return 0;
84978+}
84979+early_param("pax_nouderef", setup_pax_nouderef);
84980+
84981+#ifdef CONFIG_X86_64
84982+static int __init setup_pax_weakuderef(char *str)
84983+{
84984+ if (clone_pgd_mask != ~(pgdval_t)0UL)
84985+ pax_user_shadow_base = 1UL << TASK_SIZE_MAX_SHIFT;
84986+ return 1;
84987+}
84988+__setup("pax_weakuderef", setup_pax_weakuderef);
84989+#endif
84990+#endif
84991+
84992+#ifdef CONFIG_PAX_SOFTMODE
84993+int pax_softmode;
84994+
84995+static int __init setup_pax_softmode(char *str)
84996+{
84997+ get_option(&str, &pax_softmode);
84998+ return 1;
84999+}
85000+__setup("pax_softmode=", setup_pax_softmode);
85001+#endif
85002+
85003 static const char * argv_init[MAX_INIT_ARGS+2] = { "init", NULL, };
85004 const char * envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, };
85005 static const char *panic_later, *panic_param;
85006@@ -688,25 +759,24 @@ int __init_or_module do_one_initcall(initcall_t fn)
85007 {
85008 int count = preempt_count();
85009 int ret;
85010- char msgbuf[64];
85011+ const char *msg1 = "", *msg2 = "";
85012
85013 if (initcall_debug)
85014 ret = do_one_initcall_debug(fn);
85015 else
85016 ret = fn();
85017
85018- msgbuf[0] = 0;
85019-
85020 if (preempt_count() != count) {
85021- sprintf(msgbuf, "preemption imbalance ");
85022+ msg1 = " preemption imbalance";
85023 preempt_count_set(count);
85024 }
85025 if (irqs_disabled()) {
85026- strlcat(msgbuf, "disabled interrupts ", sizeof(msgbuf));
85027+ msg2 = " disabled interrupts";
85028 local_irq_enable();
85029 }
85030- WARN(msgbuf[0], "initcall %pF returned with %s\n", fn, msgbuf);
85031+ WARN(*msg1 || *msg2, "initcall %pF returned with%s%s\n", fn, msg1, msg2);
85032
85033+ add_latent_entropy();
85034 return ret;
85035 }
85036
85037@@ -813,8 +883,8 @@ static int run_init_process(const char *init_filename)
85038 {
85039 argv_init[0] = init_filename;
85040 return do_execve(getname_kernel(init_filename),
85041- (const char __user *const __user *)argv_init,
85042- (const char __user *const __user *)envp_init);
85043+ (const char __user *const __force_user *)argv_init,
85044+ (const char __user *const __force_user *)envp_init);
85045 }
85046
85047 static int try_to_run_init_process(const char *init_filename)
85048@@ -831,6 +901,10 @@ static int try_to_run_init_process(const char *init_filename)
85049 return ret;
85050 }
85051
85052+#ifdef CONFIG_GRKERNSEC_CHROOT_INITRD
85053+extern int gr_init_ran;
85054+#endif
85055+
85056 static noinline void __init kernel_init_freeable(void);
85057
85058 static int __ref kernel_init(void *unused)
85059@@ -855,6 +929,11 @@ static int __ref kernel_init(void *unused)
85060 ramdisk_execute_command, ret);
85061 }
85062
85063+#ifdef CONFIG_GRKERNSEC_CHROOT_INITRD
85064+ /* if no initrd was used, be extra sure we enforce chroot restrictions */
85065+ gr_init_ran = 1;
85066+#endif
85067+
85068 /*
85069 * We try each of these until one succeeds.
85070 *
85071@@ -910,7 +989,7 @@ static noinline void __init kernel_init_freeable(void)
85072 do_basic_setup();
85073
85074 /* Open the /dev/console on the rootfs, this should never fail */
85075- if (sys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
85076+ if (sys_open((const char __force_user *) "/dev/console", O_RDWR, 0) < 0)
85077 pr_err("Warning: unable to open an initial console.\n");
85078
85079 (void) sys_dup(0);
85080@@ -923,11 +1002,13 @@ static noinline void __init kernel_init_freeable(void)
85081 if (!ramdisk_execute_command)
85082 ramdisk_execute_command = "/init";
85083
85084- if (sys_access((const char __user *) ramdisk_execute_command, 0) != 0) {
85085+ if (sys_access((const char __force_user *) ramdisk_execute_command, 0) != 0) {
85086 ramdisk_execute_command = NULL;
85087 prepare_namespace();
85088 }
85089
85090+ grsecurity_init();
85091+
85092 /*
85093 * Ok, we have completed the initial bootup, and
85094 * we're essentially up and running. Get rid of the
85095diff --git a/ipc/compat.c b/ipc/compat.c
85096index 45d035d..e4a7f99 100644
85097--- a/ipc/compat.c
85098+++ b/ipc/compat.c
85099@@ -396,7 +396,7 @@ COMPAT_SYSCALL_DEFINE6(ipc, u32, call, int, first, int, second,
85100 COMPAT_SHMLBA);
85101 if (err < 0)
85102 return err;
85103- return put_user(raddr, (compat_ulong_t *)compat_ptr(third));
85104+ return put_user(raddr, (compat_ulong_t __user *)compat_ptr(third));
85105 }
85106 case SHMDT:
85107 return sys_shmdt(compat_ptr(ptr));
85108diff --git a/ipc/ipc_sysctl.c b/ipc/ipc_sysctl.c
85109index 998d31b..30c24df 100644
85110--- a/ipc/ipc_sysctl.c
85111+++ b/ipc/ipc_sysctl.c
85112@@ -30,7 +30,7 @@ static void *get_ipc(ctl_table *table)
85113 static int proc_ipc_dointvec(ctl_table *table, int write,
85114 void __user *buffer, size_t *lenp, loff_t *ppos)
85115 {
85116- struct ctl_table ipc_table;
85117+ ctl_table_no_const ipc_table;
85118
85119 memcpy(&ipc_table, table, sizeof(ipc_table));
85120 ipc_table.data = get_ipc(table);
85121@@ -41,7 +41,7 @@ static int proc_ipc_dointvec(ctl_table *table, int write,
85122 static int proc_ipc_dointvec_minmax(ctl_table *table, int write,
85123 void __user *buffer, size_t *lenp, loff_t *ppos)
85124 {
85125- struct ctl_table ipc_table;
85126+ ctl_table_no_const ipc_table;
85127
85128 memcpy(&ipc_table, table, sizeof(ipc_table));
85129 ipc_table.data = get_ipc(table);
85130@@ -65,7 +65,7 @@ static int proc_ipc_dointvec_minmax_orphans(ctl_table *table, int write,
85131 static int proc_ipc_callback_dointvec_minmax(ctl_table *table, int write,
85132 void __user *buffer, size_t *lenp, loff_t *ppos)
85133 {
85134- struct ctl_table ipc_table;
85135+ ctl_table_no_const ipc_table;
85136 size_t lenp_bef = *lenp;
85137 int rc;
85138
85139@@ -88,7 +88,7 @@ static int proc_ipc_callback_dointvec_minmax(ctl_table *table, int write,
85140 static int proc_ipc_doulongvec_minmax(ctl_table *table, int write,
85141 void __user *buffer, size_t *lenp, loff_t *ppos)
85142 {
85143- struct ctl_table ipc_table;
85144+ ctl_table_no_const ipc_table;
85145 memcpy(&ipc_table, table, sizeof(ipc_table));
85146 ipc_table.data = get_ipc(table);
85147
85148@@ -122,7 +122,7 @@ static void ipc_auto_callback(int val)
85149 static int proc_ipcauto_dointvec_minmax(ctl_table *table, int write,
85150 void __user *buffer, size_t *lenp, loff_t *ppos)
85151 {
85152- struct ctl_table ipc_table;
85153+ ctl_table_no_const ipc_table;
85154 size_t lenp_bef = *lenp;
85155 int oldval;
85156 int rc;
85157diff --git a/ipc/mq_sysctl.c b/ipc/mq_sysctl.c
85158index 5bb8bfe..a38ec05 100644
85159--- a/ipc/mq_sysctl.c
85160+++ b/ipc/mq_sysctl.c
85161@@ -25,7 +25,7 @@ static void *get_mq(ctl_table *table)
85162 static int proc_mq_dointvec(ctl_table *table, int write,
85163 void __user *buffer, size_t *lenp, loff_t *ppos)
85164 {
85165- struct ctl_table mq_table;
85166+ ctl_table_no_const mq_table;
85167 memcpy(&mq_table, table, sizeof(mq_table));
85168 mq_table.data = get_mq(table);
85169
85170@@ -35,7 +35,7 @@ static int proc_mq_dointvec(ctl_table *table, int write,
85171 static int proc_mq_dointvec_minmax(ctl_table *table, int write,
85172 void __user *buffer, size_t *lenp, loff_t *ppos)
85173 {
85174- struct ctl_table mq_table;
85175+ ctl_table_no_const mq_table;
85176 memcpy(&mq_table, table, sizeof(mq_table));
85177 mq_table.data = get_mq(table);
85178
85179diff --git a/ipc/mqueue.c b/ipc/mqueue.c
85180index 4fcf39a..d3cc2ec 100644
85181--- a/ipc/mqueue.c
85182+++ b/ipc/mqueue.c
85183@@ -278,6 +278,7 @@ static struct inode *mqueue_get_inode(struct super_block *sb,
85184 mq_bytes = mq_treesize + (info->attr.mq_maxmsg *
85185 info->attr.mq_msgsize);
85186
85187+ gr_learn_resource(current, RLIMIT_MSGQUEUE, u->mq_bytes + mq_bytes, 1);
85188 spin_lock(&mq_lock);
85189 if (u->mq_bytes + mq_bytes < u->mq_bytes ||
85190 u->mq_bytes + mq_bytes > rlimit(RLIMIT_MSGQUEUE)) {
85191diff --git a/ipc/msg.c b/ipc/msg.c
85192index 6498531..b0ff3c8 100644
85193--- a/ipc/msg.c
85194+++ b/ipc/msg.c
85195@@ -303,18 +303,19 @@ static inline int msg_security(struct kern_ipc_perm *ipcp, int msgflg)
85196 return security_msg_queue_associate(msq, msgflg);
85197 }
85198
85199+static struct ipc_ops msg_ops = {
85200+ .getnew = newque,
85201+ .associate = msg_security,
85202+ .more_checks = NULL
85203+};
85204+
85205 SYSCALL_DEFINE2(msgget, key_t, key, int, msgflg)
85206 {
85207 struct ipc_namespace *ns;
85208- struct ipc_ops msg_ops;
85209 struct ipc_params msg_params;
85210
85211 ns = current->nsproxy->ipc_ns;
85212
85213- msg_ops.getnew = newque;
85214- msg_ops.associate = msg_security;
85215- msg_ops.more_checks = NULL;
85216-
85217 msg_params.key = key;
85218 msg_params.flg = msgflg;
85219
85220diff --git a/ipc/sem.c b/ipc/sem.c
85221index bee5554..e9af81dd 100644
85222--- a/ipc/sem.c
85223+++ b/ipc/sem.c
85224@@ -561,10 +561,15 @@ static inline int sem_more_checks(struct kern_ipc_perm *ipcp,
85225 return 0;
85226 }
85227
85228+static struct ipc_ops sem_ops = {
85229+ .getnew = newary,
85230+ .associate = sem_security,
85231+ .more_checks = sem_more_checks
85232+};
85233+
85234 SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg)
85235 {
85236 struct ipc_namespace *ns;
85237- struct ipc_ops sem_ops;
85238 struct ipc_params sem_params;
85239
85240 ns = current->nsproxy->ipc_ns;
85241@@ -572,10 +577,6 @@ SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg)
85242 if (nsems < 0 || nsems > ns->sc_semmsl)
85243 return -EINVAL;
85244
85245- sem_ops.getnew = newary;
85246- sem_ops.associate = sem_security;
85247- sem_ops.more_checks = sem_more_checks;
85248-
85249 sem_params.key = key;
85250 sem_params.flg = semflg;
85251 sem_params.u.nsems = nsems;
85252diff --git a/ipc/shm.c b/ipc/shm.c
85253index 7645961..afc7f02 100644
85254--- a/ipc/shm.c
85255+++ b/ipc/shm.c
85256@@ -72,6 +72,14 @@ static void shm_destroy(struct ipc_namespace *ns, struct shmid_kernel *shp);
85257 static int sysvipc_shm_proc_show(struct seq_file *s, void *it);
85258 #endif
85259
85260+#ifdef CONFIG_GRKERNSEC
85261+extern int gr_handle_shmat(const pid_t shm_cprid, const pid_t shm_lapid,
85262+ const time_t shm_createtime, const kuid_t cuid,
85263+ const int shmid);
85264+extern int gr_chroot_shmat(const pid_t shm_cprid, const pid_t shm_lapid,
85265+ const time_t shm_createtime);
85266+#endif
85267+
85268 void shm_init_ns(struct ipc_namespace *ns)
85269 {
85270 ns->shm_ctlmax = SHMMAX;
85271@@ -553,6 +561,14 @@ static int newseg(struct ipc_namespace *ns, struct ipc_params *params)
85272 shp->shm_lprid = 0;
85273 shp->shm_atim = shp->shm_dtim = 0;
85274 shp->shm_ctim = get_seconds();
85275+#ifdef CONFIG_GRKERNSEC
85276+ {
85277+ struct timespec timeval;
85278+ do_posix_clock_monotonic_gettime(&timeval);
85279+
85280+ shp->shm_createtime = timeval.tv_sec;
85281+ }
85282+#endif
85283 shp->shm_segsz = size;
85284 shp->shm_nattch = 0;
85285 shp->shm_file = file;
85286@@ -606,18 +622,19 @@ static inline int shm_more_checks(struct kern_ipc_perm *ipcp,
85287 return 0;
85288 }
85289
85290+static struct ipc_ops shm_ops = {
85291+ .getnew = newseg,
85292+ .associate = shm_security,
85293+ .more_checks = shm_more_checks
85294+};
85295+
85296 SYSCALL_DEFINE3(shmget, key_t, key, size_t, size, int, shmflg)
85297 {
85298 struct ipc_namespace *ns;
85299- struct ipc_ops shm_ops;
85300 struct ipc_params shm_params;
85301
85302 ns = current->nsproxy->ipc_ns;
85303
85304- shm_ops.getnew = newseg;
85305- shm_ops.associate = shm_security;
85306- shm_ops.more_checks = shm_more_checks;
85307-
85308 shm_params.key = key;
85309 shm_params.flg = shmflg;
85310 shm_params.u.size = size;
85311@@ -1088,6 +1105,12 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
85312 f_mode = FMODE_READ | FMODE_WRITE;
85313 }
85314 if (shmflg & SHM_EXEC) {
85315+
85316+#ifdef CONFIG_PAX_MPROTECT
85317+ if (current->mm->pax_flags & MF_PAX_MPROTECT)
85318+ goto out;
85319+#endif
85320+
85321 prot |= PROT_EXEC;
85322 acc_mode |= S_IXUGO;
85323 }
85324@@ -1112,6 +1135,15 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
85325 if (err)
85326 goto out_unlock;
85327
85328+#ifdef CONFIG_GRKERNSEC
85329+ if (!gr_handle_shmat(shp->shm_cprid, shp->shm_lapid, shp->shm_createtime,
85330+ shp->shm_perm.cuid, shmid) ||
85331+ !gr_chroot_shmat(shp->shm_cprid, shp->shm_lapid, shp->shm_createtime)) {
85332+ err = -EACCES;
85333+ goto out_unlock;
85334+ }
85335+#endif
85336+
85337 ipc_lock_object(&shp->shm_perm);
85338
85339 /* check if shm_destroy() is tearing down shp */
85340@@ -1124,6 +1156,9 @@ long do_shmat(int shmid, char __user *shmaddr, int shmflg, ulong *raddr,
85341 path = shp->shm_file->f_path;
85342 path_get(&path);
85343 shp->shm_nattch++;
85344+#ifdef CONFIG_GRKERNSEC
85345+ shp->shm_lapid = current->pid;
85346+#endif
85347 size = i_size_read(path.dentry->d_inode);
85348 ipc_unlock_object(&shp->shm_perm);
85349 rcu_read_unlock();
85350diff --git a/ipc/util.c b/ipc/util.c
85351index 2eb0d1e..0308564 100644
85352--- a/ipc/util.c
85353+++ b/ipc/util.c
85354@@ -71,6 +71,8 @@ struct ipc_proc_iface {
85355 int (*show)(struct seq_file *, void *);
85356 };
85357
85358+extern int gr_ipc_permitted(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp, int requested_mode, int granted_mode);
85359+
85360 static void ipc_memory_notifier(struct work_struct *work)
85361 {
85362 ipcns_notify(IPCNS_MEMCHANGED);
85363@@ -537,6 +539,10 @@ int ipcperms(struct ipc_namespace *ns, struct kern_ipc_perm *ipcp, short flag)
85364 granted_mode >>= 6;
85365 else if (in_group_p(ipcp->cgid) || in_group_p(ipcp->gid))
85366 granted_mode >>= 3;
85367+
85368+ if (!gr_ipc_permitted(ns, ipcp, requested_mode, granted_mode))
85369+ return -1;
85370+
85371 /* is there some bit set in requested_mode but not in granted_mode? */
85372 if ((requested_mode & ~granted_mode & 0007) &&
85373 !ns_capable(ns->user_ns, CAP_IPC_OWNER))
85374diff --git a/kernel/acct.c b/kernel/acct.c
85375index 8d6e145..33e0b1e 100644
85376--- a/kernel/acct.c
85377+++ b/kernel/acct.c
85378@@ -556,7 +556,7 @@ static void do_acct_process(struct bsd_acct_struct *acct,
85379 */
85380 flim = current->signal->rlim[RLIMIT_FSIZE].rlim_cur;
85381 current->signal->rlim[RLIMIT_FSIZE].rlim_cur = RLIM_INFINITY;
85382- file->f_op->write(file, (char *)&ac,
85383+ file->f_op->write(file, (char __force_user *)&ac,
85384 sizeof(acct_t), &file->f_pos);
85385 current->signal->rlim[RLIMIT_FSIZE].rlim_cur = flim;
85386 set_fs(fs);
85387diff --git a/kernel/audit.c b/kernel/audit.c
85388index 47845c5..bd9dd5b 100644
85389--- a/kernel/audit.c
85390+++ b/kernel/audit.c
85391@@ -122,7 +122,7 @@ u32 audit_sig_sid = 0;
85392 3) suppressed due to audit_rate_limit
85393 4) suppressed due to audit_backlog_limit
85394 */
85395-static atomic_t audit_lost = ATOMIC_INIT(0);
85396+static atomic_unchecked_t audit_lost = ATOMIC_INIT(0);
85397
85398 /* The netlink socket. */
85399 static struct sock *audit_sock;
85400@@ -256,7 +256,7 @@ void audit_log_lost(const char *message)
85401 unsigned long now;
85402 int print;
85403
85404- atomic_inc(&audit_lost);
85405+ atomic_inc_unchecked(&audit_lost);
85406
85407 print = (audit_failure == AUDIT_FAIL_PANIC || !audit_rate_limit);
85408
85409@@ -273,7 +273,7 @@ void audit_log_lost(const char *message)
85410 if (print) {
85411 if (printk_ratelimit())
85412 pr_warn("audit_lost=%u audit_rate_limit=%u audit_backlog_limit=%u\n",
85413- atomic_read(&audit_lost),
85414+ atomic_read_unchecked(&audit_lost),
85415 audit_rate_limit,
85416 audit_backlog_limit);
85417 audit_panic(message);
85418@@ -808,7 +808,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
85419 s.pid = audit_pid;
85420 s.rate_limit = audit_rate_limit;
85421 s.backlog_limit = audit_backlog_limit;
85422- s.lost = atomic_read(&audit_lost);
85423+ s.lost = atomic_read_unchecked(&audit_lost);
85424 s.backlog = skb_queue_len(&audit_skb_queue);
85425 s.version = AUDIT_VERSION_LATEST;
85426 s.backlog_wait_time = audit_backlog_wait_time;
85427diff --git a/kernel/auditsc.c b/kernel/auditsc.c
85428index 21eae3c..66db239 100644
85429--- a/kernel/auditsc.c
85430+++ b/kernel/auditsc.c
85431@@ -2023,7 +2023,7 @@ int auditsc_get_stamp(struct audit_context *ctx,
85432 }
85433
85434 /* global counter which is incremented every time something logs in */
85435-static atomic_t session_id = ATOMIC_INIT(0);
85436+static atomic_unchecked_t session_id = ATOMIC_INIT(0);
85437
85438 static int audit_set_loginuid_perm(kuid_t loginuid)
85439 {
85440@@ -2090,7 +2090,7 @@ int audit_set_loginuid(kuid_t loginuid)
85441
85442 /* are we setting or clearing? */
85443 if (uid_valid(loginuid))
85444- sessionid = (unsigned int)atomic_inc_return(&session_id);
85445+ sessionid = (unsigned int)atomic_inc_return_unchecked(&session_id);
85446
85447 task->sessionid = sessionid;
85448 task->loginuid = loginuid;
85449diff --git a/kernel/capability.c b/kernel/capability.c
85450index 24663b3..b926ae1 100644
85451--- a/kernel/capability.c
85452+++ b/kernel/capability.c
85453@@ -193,6 +193,9 @@ SYSCALL_DEFINE2(capget, cap_user_header_t, header, cap_user_data_t, dataptr)
85454 * before modification is attempted and the application
85455 * fails.
85456 */
85457+ if (tocopy > ARRAY_SIZE(kdata))
85458+ return -EFAULT;
85459+
85460 if (copy_to_user(dataptr, kdata, tocopy
85461 * sizeof(struct __user_cap_data_struct))) {
85462 return -EFAULT;
85463@@ -294,10 +297,11 @@ bool has_ns_capability(struct task_struct *t,
85464 int ret;
85465
85466 rcu_read_lock();
85467- ret = security_capable(__task_cred(t), ns, cap);
85468+ ret = security_capable(__task_cred(t), ns, cap) == 0 &&
85469+ gr_task_is_capable(t, __task_cred(t), cap);
85470 rcu_read_unlock();
85471
85472- return (ret == 0);
85473+ return ret;
85474 }
85475
85476 /**
85477@@ -334,10 +338,10 @@ bool has_ns_capability_noaudit(struct task_struct *t,
85478 int ret;
85479
85480 rcu_read_lock();
85481- ret = security_capable_noaudit(__task_cred(t), ns, cap);
85482+ ret = security_capable_noaudit(__task_cred(t), ns, cap) == 0 && gr_task_is_capable_nolog(t, cap);
85483 rcu_read_unlock();
85484
85485- return (ret == 0);
85486+ return ret;
85487 }
85488
85489 /**
85490@@ -375,7 +379,7 @@ bool ns_capable(struct user_namespace *ns, int cap)
85491 BUG();
85492 }
85493
85494- if (security_capable(current_cred(), ns, cap) == 0) {
85495+ if (security_capable(current_cred(), ns, cap) == 0 && gr_is_capable(cap)) {
85496 current->flags |= PF_SUPERPRIV;
85497 return true;
85498 }
85499@@ -383,6 +387,21 @@ bool ns_capable(struct user_namespace *ns, int cap)
85500 }
85501 EXPORT_SYMBOL(ns_capable);
85502
85503+bool ns_capable_nolog(struct user_namespace *ns, int cap)
85504+{
85505+ if (unlikely(!cap_valid(cap))) {
85506+ printk(KERN_CRIT "capable_nolog() called with invalid cap=%u\n", cap);
85507+ BUG();
85508+ }
85509+
85510+ if (security_capable_noaudit(current_cred(), ns, cap) == 0 && gr_is_capable_nolog(cap)) {
85511+ current->flags |= PF_SUPERPRIV;
85512+ return true;
85513+ }
85514+ return false;
85515+}
85516+EXPORT_SYMBOL(ns_capable_nolog);
85517+
85518 /**
85519 * file_ns_capable - Determine if the file's opener had a capability in effect
85520 * @file: The file we want to check
85521@@ -423,6 +442,12 @@ bool capable(int cap)
85522 }
85523 EXPORT_SYMBOL(capable);
85524
85525+bool capable_nolog(int cap)
85526+{
85527+ return ns_capable_nolog(&init_user_ns, cap);
85528+}
85529+EXPORT_SYMBOL(capable_nolog);
85530+
85531 /**
85532 * capable_wrt_inode_uidgid - Check nsown_capable and uid and gid mapped
85533 * @inode: The inode in question
85534@@ -440,3 +465,12 @@ bool capable_wrt_inode_uidgid(const struct inode *inode, int cap)
85535 kgid_has_mapping(ns, inode->i_gid);
85536 }
85537 EXPORT_SYMBOL(capable_wrt_inode_uidgid);
85538+
85539+bool capable_wrt_inode_uidgid_nolog(const struct inode *inode, int cap)
85540+{
85541+ struct user_namespace *ns = current_user_ns();
85542+
85543+ return ns_capable_nolog(ns, cap) && kuid_has_mapping(ns, inode->i_uid) &&
85544+ kgid_has_mapping(ns, inode->i_gid);
85545+}
85546+EXPORT_SYMBOL(capable_wrt_inode_uidgid_nolog);
85547diff --git a/kernel/cgroup.c b/kernel/cgroup.c
85548index ceee0c5..d6f81dd 100644
85549--- a/kernel/cgroup.c
85550+++ b/kernel/cgroup.c
85551@@ -4757,7 +4757,7 @@ static int cgroup_css_links_read(struct seq_file *seq, void *v)
85552 struct task_struct *task;
85553 int count = 0;
85554
85555- seq_printf(seq, "css_set %p\n", cset);
85556+ seq_printf(seq, "css_set %pK\n", cset);
85557
85558 list_for_each_entry(task, &cset->tasks, cg_list) {
85559 if (count++ > MAX_TASKS_SHOWN_PER_CSS)
85560diff --git a/kernel/compat.c b/kernel/compat.c
85561index e40b043..3da8f51 100644
85562--- a/kernel/compat.c
85563+++ b/kernel/compat.c
85564@@ -13,6 +13,7 @@
85565
85566 #include <linux/linkage.h>
85567 #include <linux/compat.h>
85568+#include <linux/module.h>
85569 #include <linux/errno.h>
85570 #include <linux/time.h>
85571 #include <linux/signal.h>
85572@@ -220,7 +221,7 @@ static long compat_nanosleep_restart(struct restart_block *restart)
85573 mm_segment_t oldfs;
85574 long ret;
85575
85576- restart->nanosleep.rmtp = (struct timespec __user *) &rmt;
85577+ restart->nanosleep.rmtp = (struct timespec __force_user *) &rmt;
85578 oldfs = get_fs();
85579 set_fs(KERNEL_DS);
85580 ret = hrtimer_nanosleep_restart(restart);
85581@@ -252,7 +253,7 @@ COMPAT_SYSCALL_DEFINE2(nanosleep, struct compat_timespec __user *, rqtp,
85582 oldfs = get_fs();
85583 set_fs(KERNEL_DS);
85584 ret = hrtimer_nanosleep(&tu,
85585- rmtp ? (struct timespec __user *)&rmt : NULL,
85586+ rmtp ? (struct timespec __force_user *)&rmt : NULL,
85587 HRTIMER_MODE_REL, CLOCK_MONOTONIC);
85588 set_fs(oldfs);
85589
85590@@ -361,7 +362,7 @@ COMPAT_SYSCALL_DEFINE1(sigpending, compat_old_sigset_t __user *, set)
85591 mm_segment_t old_fs = get_fs();
85592
85593 set_fs(KERNEL_DS);
85594- ret = sys_sigpending((old_sigset_t __user *) &s);
85595+ ret = sys_sigpending((old_sigset_t __force_user *) &s);
85596 set_fs(old_fs);
85597 if (ret == 0)
85598 ret = put_user(s, set);
85599@@ -451,7 +452,7 @@ COMPAT_SYSCALL_DEFINE2(old_getrlimit, unsigned int, resource,
85600 mm_segment_t old_fs = get_fs();
85601
85602 set_fs(KERNEL_DS);
85603- ret = sys_old_getrlimit(resource, (struct rlimit __user *)&r);
85604+ ret = sys_old_getrlimit(resource, (struct rlimit __force_user *)&r);
85605 set_fs(old_fs);
85606
85607 if (!ret) {
85608@@ -533,8 +534,8 @@ COMPAT_SYSCALL_DEFINE4(wait4,
85609 set_fs (KERNEL_DS);
85610 ret = sys_wait4(pid,
85611 (stat_addr ?
85612- (unsigned int __user *) &status : NULL),
85613- options, (struct rusage __user *) &r);
85614+ (unsigned int __force_user *) &status : NULL),
85615+ options, (struct rusage __force_user *) &r);
85616 set_fs (old_fs);
85617
85618 if (ret > 0) {
85619@@ -560,8 +561,8 @@ COMPAT_SYSCALL_DEFINE5(waitid,
85620 memset(&info, 0, sizeof(info));
85621
85622 set_fs(KERNEL_DS);
85623- ret = sys_waitid(which, pid, (siginfo_t __user *)&info, options,
85624- uru ? (struct rusage __user *)&ru : NULL);
85625+ ret = sys_waitid(which, pid, (siginfo_t __force_user *)&info, options,
85626+ uru ? (struct rusage __force_user *)&ru : NULL);
85627 set_fs(old_fs);
85628
85629 if ((ret < 0) || (info.si_signo == 0))
85630@@ -695,8 +696,8 @@ COMPAT_SYSCALL_DEFINE4(timer_settime, timer_t, timer_id, int, flags,
85631 oldfs = get_fs();
85632 set_fs(KERNEL_DS);
85633 err = sys_timer_settime(timer_id, flags,
85634- (struct itimerspec __user *) &newts,
85635- (struct itimerspec __user *) &oldts);
85636+ (struct itimerspec __force_user *) &newts,
85637+ (struct itimerspec __force_user *) &oldts);
85638 set_fs(oldfs);
85639 if (!err && old && put_compat_itimerspec(old, &oldts))
85640 return -EFAULT;
85641@@ -713,7 +714,7 @@ COMPAT_SYSCALL_DEFINE2(timer_gettime, timer_t, timer_id,
85642 oldfs = get_fs();
85643 set_fs(KERNEL_DS);
85644 err = sys_timer_gettime(timer_id,
85645- (struct itimerspec __user *) &ts);
85646+ (struct itimerspec __force_user *) &ts);
85647 set_fs(oldfs);
85648 if (!err && put_compat_itimerspec(setting, &ts))
85649 return -EFAULT;
85650@@ -732,7 +733,7 @@ COMPAT_SYSCALL_DEFINE2(clock_settime, clockid_t, which_clock,
85651 oldfs = get_fs();
85652 set_fs(KERNEL_DS);
85653 err = sys_clock_settime(which_clock,
85654- (struct timespec __user *) &ts);
85655+ (struct timespec __force_user *) &ts);
85656 set_fs(oldfs);
85657 return err;
85658 }
85659@@ -747,7 +748,7 @@ COMPAT_SYSCALL_DEFINE2(clock_gettime, clockid_t, which_clock,
85660 oldfs = get_fs();
85661 set_fs(KERNEL_DS);
85662 err = sys_clock_gettime(which_clock,
85663- (struct timespec __user *) &ts);
85664+ (struct timespec __force_user *) &ts);
85665 set_fs(oldfs);
85666 if (!err && compat_put_timespec(&ts, tp))
85667 return -EFAULT;
85668@@ -767,7 +768,7 @@ COMPAT_SYSCALL_DEFINE2(clock_adjtime, clockid_t, which_clock,
85669
85670 oldfs = get_fs();
85671 set_fs(KERNEL_DS);
85672- ret = sys_clock_adjtime(which_clock, (struct timex __user *) &txc);
85673+ ret = sys_clock_adjtime(which_clock, (struct timex __force_user *) &txc);
85674 set_fs(oldfs);
85675
85676 err = compat_put_timex(utp, &txc);
85677@@ -787,7 +788,7 @@ COMPAT_SYSCALL_DEFINE2(clock_getres, clockid_t, which_clock,
85678 oldfs = get_fs();
85679 set_fs(KERNEL_DS);
85680 err = sys_clock_getres(which_clock,
85681- (struct timespec __user *) &ts);
85682+ (struct timespec __force_user *) &ts);
85683 set_fs(oldfs);
85684 if (!err && tp && compat_put_timespec(&ts, tp))
85685 return -EFAULT;
85686@@ -801,7 +802,7 @@ static long compat_clock_nanosleep_restart(struct restart_block *restart)
85687 struct timespec tu;
85688 struct compat_timespec __user *rmtp = restart->nanosleep.compat_rmtp;
85689
85690- restart->nanosleep.rmtp = (struct timespec __user *) &tu;
85691+ restart->nanosleep.rmtp = (struct timespec __force_user *) &tu;
85692 oldfs = get_fs();
85693 set_fs(KERNEL_DS);
85694 err = clock_nanosleep_restart(restart);
85695@@ -833,8 +834,8 @@ COMPAT_SYSCALL_DEFINE4(clock_nanosleep, clockid_t, which_clock, int, flags,
85696 oldfs = get_fs();
85697 set_fs(KERNEL_DS);
85698 err = sys_clock_nanosleep(which_clock, flags,
85699- (struct timespec __user *) &in,
85700- (struct timespec __user *) &out);
85701+ (struct timespec __force_user *) &in,
85702+ (struct timespec __force_user *) &out);
85703 set_fs(oldfs);
85704
85705 if ((err == -ERESTART_RESTARTBLOCK) && rmtp &&
85706@@ -1128,7 +1129,7 @@ COMPAT_SYSCALL_DEFINE2(sched_rr_get_interval,
85707 mm_segment_t old_fs = get_fs();
85708
85709 set_fs(KERNEL_DS);
85710- ret = sys_sched_rr_get_interval(pid, (struct timespec __user *)&t);
85711+ ret = sys_sched_rr_get_interval(pid, (struct timespec __force_user *)&t);
85712 set_fs(old_fs);
85713 if (compat_put_timespec(&t, interval))
85714 return -EFAULT;
85715diff --git a/kernel/configs.c b/kernel/configs.c
85716index c18b1f1..b9a0132 100644
85717--- a/kernel/configs.c
85718+++ b/kernel/configs.c
85719@@ -74,8 +74,19 @@ static int __init ikconfig_init(void)
85720 struct proc_dir_entry *entry;
85721
85722 /* create the current config file */
85723+#if defined(CONFIG_GRKERNSEC_PROC_ADD) || defined(CONFIG_GRKERNSEC_HIDESYM)
85724+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_HIDESYM)
85725+ entry = proc_create("config.gz", S_IFREG | S_IRUSR, NULL,
85726+ &ikconfig_file_ops);
85727+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
85728+ entry = proc_create("config.gz", S_IFREG | S_IRUSR | S_IRGRP, NULL,
85729+ &ikconfig_file_ops);
85730+#endif
85731+#else
85732 entry = proc_create("config.gz", S_IFREG | S_IRUGO, NULL,
85733 &ikconfig_file_ops);
85734+#endif
85735+
85736 if (!entry)
85737 return -ENOMEM;
85738
85739diff --git a/kernel/cred.c b/kernel/cred.c
85740index e0573a4..26c0fd3 100644
85741--- a/kernel/cred.c
85742+++ b/kernel/cred.c
85743@@ -164,6 +164,16 @@ void exit_creds(struct task_struct *tsk)
85744 validate_creds(cred);
85745 alter_cred_subscribers(cred, -1);
85746 put_cred(cred);
85747+
85748+#ifdef CONFIG_GRKERNSEC_SETXID
85749+ cred = (struct cred *) tsk->delayed_cred;
85750+ if (cred != NULL) {
85751+ tsk->delayed_cred = NULL;
85752+ validate_creds(cred);
85753+ alter_cred_subscribers(cred, -1);
85754+ put_cred(cred);
85755+ }
85756+#endif
85757 }
85758
85759 /**
85760@@ -411,7 +421,7 @@ static bool cred_cap_issubset(const struct cred *set, const struct cred *subset)
85761 * Always returns 0 thus allowing this function to be tail-called at the end
85762 * of, say, sys_setgid().
85763 */
85764-int commit_creds(struct cred *new)
85765+static int __commit_creds(struct cred *new)
85766 {
85767 struct task_struct *task = current;
85768 const struct cred *old = task->real_cred;
85769@@ -430,6 +440,8 @@ int commit_creds(struct cred *new)
85770
85771 get_cred(new); /* we will require a ref for the subj creds too */
85772
85773+ gr_set_role_label(task, new->uid, new->gid);
85774+
85775 /* dumpability changes */
85776 if (!uid_eq(old->euid, new->euid) ||
85777 !gid_eq(old->egid, new->egid) ||
85778@@ -479,6 +491,105 @@ int commit_creds(struct cred *new)
85779 put_cred(old);
85780 return 0;
85781 }
85782+#ifdef CONFIG_GRKERNSEC_SETXID
85783+extern int set_user(struct cred *new);
85784+
85785+void gr_delayed_cred_worker(void)
85786+{
85787+ const struct cred *new = current->delayed_cred;
85788+ struct cred *ncred;
85789+
85790+ current->delayed_cred = NULL;
85791+
85792+ if (!uid_eq(current_uid(), GLOBAL_ROOT_UID) && new != NULL) {
85793+ // from doing get_cred on it when queueing this
85794+ put_cred(new);
85795+ return;
85796+ } else if (new == NULL)
85797+ return;
85798+
85799+ ncred = prepare_creds();
85800+ if (!ncred)
85801+ goto die;
85802+ // uids
85803+ ncred->uid = new->uid;
85804+ ncred->euid = new->euid;
85805+ ncred->suid = new->suid;
85806+ ncred->fsuid = new->fsuid;
85807+ // gids
85808+ ncred->gid = new->gid;
85809+ ncred->egid = new->egid;
85810+ ncred->sgid = new->sgid;
85811+ ncred->fsgid = new->fsgid;
85812+ // groups
85813+ set_groups(ncred, new->group_info);
85814+ // caps
85815+ ncred->securebits = new->securebits;
85816+ ncred->cap_inheritable = new->cap_inheritable;
85817+ ncred->cap_permitted = new->cap_permitted;
85818+ ncred->cap_effective = new->cap_effective;
85819+ ncred->cap_bset = new->cap_bset;
85820+
85821+ if (set_user(ncred)) {
85822+ abort_creds(ncred);
85823+ goto die;
85824+ }
85825+
85826+ // from doing get_cred on it when queueing this
85827+ put_cred(new);
85828+
85829+ __commit_creds(ncred);
85830+ return;
85831+die:
85832+ // from doing get_cred on it when queueing this
85833+ put_cred(new);
85834+ do_group_exit(SIGKILL);
85835+}
85836+#endif
85837+
85838+int commit_creds(struct cred *new)
85839+{
85840+#ifdef CONFIG_GRKERNSEC_SETXID
85841+ int ret;
85842+ int schedule_it = 0;
85843+ struct task_struct *t;
85844+ unsigned oldsecurebits = current_cred()->securebits;
85845+
85846+ /* we won't get called with tasklist_lock held for writing
85847+ and interrupts disabled as the cred struct in that case is
85848+ init_cred
85849+ */
85850+ if (grsec_enable_setxid && !current_is_single_threaded() &&
85851+ uid_eq(current_uid(), GLOBAL_ROOT_UID) &&
85852+ !uid_eq(new->uid, GLOBAL_ROOT_UID)) {
85853+ schedule_it = 1;
85854+ }
85855+ ret = __commit_creds(new);
85856+ if (schedule_it) {
85857+ rcu_read_lock();
85858+ read_lock(&tasklist_lock);
85859+ for (t = next_thread(current); t != current;
85860+ t = next_thread(t)) {
85861+ /* we'll check if the thread has uid 0 in
85862+ * the delayed worker routine
85863+ */
85864+ if (task_securebits(t) == oldsecurebits &&
85865+ t->delayed_cred == NULL) {
85866+ t->delayed_cred = get_cred(new);
85867+ set_tsk_thread_flag(t, TIF_GRSEC_SETXID);
85868+ set_tsk_need_resched(t);
85869+ }
85870+ }
85871+ read_unlock(&tasklist_lock);
85872+ rcu_read_unlock();
85873+ }
85874+
85875+ return ret;
85876+#else
85877+ return __commit_creds(new);
85878+#endif
85879+}
85880+
85881 EXPORT_SYMBOL(commit_creds);
85882
85883 /**
85884diff --git a/kernel/debug/debug_core.c b/kernel/debug/debug_core.c
85885index 2956c8d..cfe1e2e 100644
85886--- a/kernel/debug/debug_core.c
85887+++ b/kernel/debug/debug_core.c
85888@@ -124,7 +124,7 @@ static DEFINE_RAW_SPINLOCK(dbg_slave_lock);
85889 */
85890 static atomic_t masters_in_kgdb;
85891 static atomic_t slaves_in_kgdb;
85892-static atomic_t kgdb_break_tasklet_var;
85893+static atomic_unchecked_t kgdb_break_tasklet_var;
85894 atomic_t kgdb_setting_breakpoint;
85895
85896 struct task_struct *kgdb_usethread;
85897@@ -134,7 +134,7 @@ int kgdb_single_step;
85898 static pid_t kgdb_sstep_pid;
85899
85900 /* to keep track of the CPU which is doing the single stepping*/
85901-atomic_t kgdb_cpu_doing_single_step = ATOMIC_INIT(-1);
85902+atomic_unchecked_t kgdb_cpu_doing_single_step = ATOMIC_INIT(-1);
85903
85904 /*
85905 * If you are debugging a problem where roundup (the collection of
85906@@ -549,7 +549,7 @@ return_normal:
85907 * kernel will only try for the value of sstep_tries before
85908 * giving up and continuing on.
85909 */
85910- if (atomic_read(&kgdb_cpu_doing_single_step) != -1 &&
85911+ if (atomic_read_unchecked(&kgdb_cpu_doing_single_step) != -1 &&
85912 (kgdb_info[cpu].task &&
85913 kgdb_info[cpu].task->pid != kgdb_sstep_pid) && --sstep_tries) {
85914 atomic_set(&kgdb_active, -1);
85915@@ -647,8 +647,8 @@ cpu_master_loop:
85916 }
85917
85918 kgdb_restore:
85919- if (atomic_read(&kgdb_cpu_doing_single_step) != -1) {
85920- int sstep_cpu = atomic_read(&kgdb_cpu_doing_single_step);
85921+ if (atomic_read_unchecked(&kgdb_cpu_doing_single_step) != -1) {
85922+ int sstep_cpu = atomic_read_unchecked(&kgdb_cpu_doing_single_step);
85923 if (kgdb_info[sstep_cpu].task)
85924 kgdb_sstep_pid = kgdb_info[sstep_cpu].task->pid;
85925 else
85926@@ -925,18 +925,18 @@ static void kgdb_unregister_callbacks(void)
85927 static void kgdb_tasklet_bpt(unsigned long ing)
85928 {
85929 kgdb_breakpoint();
85930- atomic_set(&kgdb_break_tasklet_var, 0);
85931+ atomic_set_unchecked(&kgdb_break_tasklet_var, 0);
85932 }
85933
85934 static DECLARE_TASKLET(kgdb_tasklet_breakpoint, kgdb_tasklet_bpt, 0);
85935
85936 void kgdb_schedule_breakpoint(void)
85937 {
85938- if (atomic_read(&kgdb_break_tasklet_var) ||
85939+ if (atomic_read_unchecked(&kgdb_break_tasklet_var) ||
85940 atomic_read(&kgdb_active) != -1 ||
85941 atomic_read(&kgdb_setting_breakpoint))
85942 return;
85943- atomic_inc(&kgdb_break_tasklet_var);
85944+ atomic_inc_unchecked(&kgdb_break_tasklet_var);
85945 tasklet_schedule(&kgdb_tasklet_breakpoint);
85946 }
85947 EXPORT_SYMBOL_GPL(kgdb_schedule_breakpoint);
85948diff --git a/kernel/debug/kdb/kdb_main.c b/kernel/debug/kdb/kdb_main.c
85949index 0b097c8..11dd5c5 100644
85950--- a/kernel/debug/kdb/kdb_main.c
85951+++ b/kernel/debug/kdb/kdb_main.c
85952@@ -1977,7 +1977,7 @@ static int kdb_lsmod(int argc, const char **argv)
85953 continue;
85954
85955 kdb_printf("%-20s%8u 0x%p ", mod->name,
85956- mod->core_size, (void *)mod);
85957+ mod->core_size_rx + mod->core_size_rw, (void *)mod);
85958 #ifdef CONFIG_MODULE_UNLOAD
85959 kdb_printf("%4ld ", module_refcount(mod));
85960 #endif
85961@@ -1987,7 +1987,7 @@ static int kdb_lsmod(int argc, const char **argv)
85962 kdb_printf(" (Loading)");
85963 else
85964 kdb_printf(" (Live)");
85965- kdb_printf(" 0x%p", mod->module_core);
85966+ kdb_printf(" 0x%p 0x%p", mod->module_core_rx, mod->module_core_rw);
85967
85968 #ifdef CONFIG_MODULE_UNLOAD
85969 {
85970diff --git a/kernel/events/core.c b/kernel/events/core.c
85971index 440eefc..0909f02 100644
85972--- a/kernel/events/core.c
85973+++ b/kernel/events/core.c
85974@@ -158,8 +158,15 @@ static struct srcu_struct pmus_srcu;
85975 * 0 - disallow raw tracepoint access for unpriv
85976 * 1 - disallow cpu events for unpriv
85977 * 2 - disallow kernel profiling for unpriv
85978+ * 3 - disallow all unpriv perf event use
85979 */
85980-int sysctl_perf_event_paranoid __read_mostly = 1;
85981+#ifdef CONFIG_GRKERNSEC_PERF_HARDEN
85982+int sysctl_perf_event_legitimately_concerned __read_mostly = 3;
85983+#elif defined(CONFIG_GRKERNSEC_HIDESYM)
85984+int sysctl_perf_event_legitimately_concerned __read_mostly = 2;
85985+#else
85986+int sysctl_perf_event_legitimately_concerned __read_mostly = 1;
85987+#endif
85988
85989 /* Minimum for 512 kiB + 1 user control page */
85990 int sysctl_perf_event_mlock __read_mostly = 512 + (PAGE_SIZE / 1024); /* 'free' kiB per user */
85991@@ -185,7 +192,7 @@ void update_perf_cpu_limits(void)
85992
85993 tmp *= sysctl_perf_cpu_time_max_percent;
85994 do_div(tmp, 100);
85995- ACCESS_ONCE(perf_sample_allowed_ns) = tmp;
85996+ ACCESS_ONCE_RW(perf_sample_allowed_ns) = tmp;
85997 }
85998
85999 static int perf_rotate_context(struct perf_cpu_context *cpuctx);
86000@@ -291,7 +298,7 @@ void perf_sample_event_took(u64 sample_len_ns)
86001 }
86002 }
86003
86004-static atomic64_t perf_event_id;
86005+static atomic64_unchecked_t perf_event_id;
86006
86007 static void cpu_ctx_sched_out(struct perf_cpu_context *cpuctx,
86008 enum event_type_t event_type);
86009@@ -3002,7 +3009,7 @@ static void __perf_event_read(void *info)
86010
86011 static inline u64 perf_event_count(struct perf_event *event)
86012 {
86013- return local64_read(&event->count) + atomic64_read(&event->child_count);
86014+ return local64_read(&event->count) + atomic64_read_unchecked(&event->child_count);
86015 }
86016
86017 static u64 perf_event_read(struct perf_event *event)
86018@@ -3361,9 +3368,9 @@ u64 perf_event_read_value(struct perf_event *event, u64 *enabled, u64 *running)
86019 mutex_lock(&event->child_mutex);
86020 total += perf_event_read(event);
86021 *enabled += event->total_time_enabled +
86022- atomic64_read(&event->child_total_time_enabled);
86023+ atomic64_read_unchecked(&event->child_total_time_enabled);
86024 *running += event->total_time_running +
86025- atomic64_read(&event->child_total_time_running);
86026+ atomic64_read_unchecked(&event->child_total_time_running);
86027
86028 list_for_each_entry(child, &event->child_list, child_list) {
86029 total += perf_event_read(child);
86030@@ -3792,10 +3799,10 @@ void perf_event_update_userpage(struct perf_event *event)
86031 userpg->offset -= local64_read(&event->hw.prev_count);
86032
86033 userpg->time_enabled = enabled +
86034- atomic64_read(&event->child_total_time_enabled);
86035+ atomic64_read_unchecked(&event->child_total_time_enabled);
86036
86037 userpg->time_running = running +
86038- atomic64_read(&event->child_total_time_running);
86039+ atomic64_read_unchecked(&event->child_total_time_running);
86040
86041 arch_perf_update_userpage(userpg, now);
86042
86043@@ -4359,7 +4366,7 @@ perf_output_sample_ustack(struct perf_output_handle *handle, u64 dump_size,
86044
86045 /* Data. */
86046 sp = perf_user_stack_pointer(regs);
86047- rem = __output_copy_user(handle, (void *) sp, dump_size);
86048+ rem = __output_copy_user(handle, (void __user *) sp, dump_size);
86049 dyn_size = dump_size - rem;
86050
86051 perf_output_skip(handle, rem);
86052@@ -4450,11 +4457,11 @@ static void perf_output_read_one(struct perf_output_handle *handle,
86053 values[n++] = perf_event_count(event);
86054 if (read_format & PERF_FORMAT_TOTAL_TIME_ENABLED) {
86055 values[n++] = enabled +
86056- atomic64_read(&event->child_total_time_enabled);
86057+ atomic64_read_unchecked(&event->child_total_time_enabled);
86058 }
86059 if (read_format & PERF_FORMAT_TOTAL_TIME_RUNNING) {
86060 values[n++] = running +
86061- atomic64_read(&event->child_total_time_running);
86062+ atomic64_read_unchecked(&event->child_total_time_running);
86063 }
86064 if (read_format & PERF_FORMAT_ID)
86065 values[n++] = primary_event_id(event);
86066@@ -6733,7 +6740,7 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu,
86067 event->parent = parent_event;
86068
86069 event->ns = get_pid_ns(task_active_pid_ns(current));
86070- event->id = atomic64_inc_return(&perf_event_id);
86071+ event->id = atomic64_inc_return_unchecked(&perf_event_id);
86072
86073 event->state = PERF_EVENT_STATE_INACTIVE;
86074
86075@@ -7015,6 +7022,11 @@ SYSCALL_DEFINE5(perf_event_open,
86076 if (flags & ~PERF_FLAG_ALL)
86077 return -EINVAL;
86078
86079+#ifdef CONFIG_GRKERNSEC_PERF_HARDEN
86080+ if (perf_paranoid_any() && !capable(CAP_SYS_ADMIN))
86081+ return -EACCES;
86082+#endif
86083+
86084 err = perf_copy_attr(attr_uptr, &attr);
86085 if (err)
86086 return err;
86087@@ -7353,10 +7365,10 @@ static void sync_child_event(struct perf_event *child_event,
86088 /*
86089 * Add back the child's count to the parent's count:
86090 */
86091- atomic64_add(child_val, &parent_event->child_count);
86092- atomic64_add(child_event->total_time_enabled,
86093+ atomic64_add_unchecked(child_val, &parent_event->child_count);
86094+ atomic64_add_unchecked(child_event->total_time_enabled,
86095 &parent_event->child_total_time_enabled);
86096- atomic64_add(child_event->total_time_running,
86097+ atomic64_add_unchecked(child_event->total_time_running,
86098 &parent_event->child_total_time_running);
86099
86100 /*
86101diff --git a/kernel/events/internal.h b/kernel/events/internal.h
86102index 569b2187..19940d9 100644
86103--- a/kernel/events/internal.h
86104+++ b/kernel/events/internal.h
86105@@ -81,10 +81,10 @@ static inline unsigned long perf_data_size(struct ring_buffer *rb)
86106 return rb->nr_pages << (PAGE_SHIFT + page_order(rb));
86107 }
86108
86109-#define DEFINE_OUTPUT_COPY(func_name, memcpy_func) \
86110+#define DEFINE_OUTPUT_COPY(func_name, memcpy_func, user) \
86111 static inline unsigned long \
86112 func_name(struct perf_output_handle *handle, \
86113- const void *buf, unsigned long len) \
86114+ const void user *buf, unsigned long len) \
86115 { \
86116 unsigned long size, written; \
86117 \
86118@@ -117,7 +117,7 @@ memcpy_common(void *dst, const void *src, unsigned long n)
86119 return 0;
86120 }
86121
86122-DEFINE_OUTPUT_COPY(__output_copy, memcpy_common)
86123+DEFINE_OUTPUT_COPY(__output_copy, memcpy_common, )
86124
86125 static inline unsigned long
86126 memcpy_skip(void *dst, const void *src, unsigned long n)
86127@@ -125,7 +125,7 @@ memcpy_skip(void *dst, const void *src, unsigned long n)
86128 return 0;
86129 }
86130
86131-DEFINE_OUTPUT_COPY(__output_skip, memcpy_skip)
86132+DEFINE_OUTPUT_COPY(__output_skip, memcpy_skip, )
86133
86134 #ifndef arch_perf_out_copy_user
86135 #define arch_perf_out_copy_user arch_perf_out_copy_user
86136@@ -143,7 +143,7 @@ arch_perf_out_copy_user(void *dst, const void *src, unsigned long n)
86137 }
86138 #endif
86139
86140-DEFINE_OUTPUT_COPY(__output_copy_user, arch_perf_out_copy_user)
86141+DEFINE_OUTPUT_COPY(__output_copy_user, arch_perf_out_copy_user, __user)
86142
86143 /* Callchain handling */
86144 extern struct perf_callchain_entry *
86145diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
86146index 04709b6..d330828 100644
86147--- a/kernel/events/uprobes.c
86148+++ b/kernel/events/uprobes.c
86149@@ -1666,7 +1666,7 @@ static int is_trap_at_addr(struct mm_struct *mm, unsigned long vaddr)
86150 {
86151 struct page *page;
86152 uprobe_opcode_t opcode;
86153- int result;
86154+ long result;
86155
86156 pagefault_disable();
86157 result = __copy_from_user_inatomic(&opcode, (void __user*)vaddr,
86158diff --git a/kernel/exit.c b/kernel/exit.c
86159index 6ed6a1d..edecb0e 100644
86160--- a/kernel/exit.c
86161+++ b/kernel/exit.c
86162@@ -173,6 +173,10 @@ void release_task(struct task_struct * p)
86163 struct task_struct *leader;
86164 int zap_leader;
86165 repeat:
86166+#ifdef CONFIG_NET
86167+ gr_del_task_from_ip_table(p);
86168+#endif
86169+
86170 /* don't need to get the RCU readlock here - the process is dead and
86171 * can't be modifying its own credentials. But shut RCU-lockdep up */
86172 rcu_read_lock();
86173@@ -330,7 +334,7 @@ int allow_signal(int sig)
86174 * know it'll be handled, so that they don't get converted to
86175 * SIGKILL or just silently dropped.
86176 */
86177- current->sighand->action[(sig)-1].sa.sa_handler = (void __user *)2;
86178+ current->sighand->action[(sig)-1].sa.sa_handler = (__force void __user *)2;
86179 recalc_sigpending();
86180 spin_unlock_irq(&current->sighand->siglock);
86181 return 0;
86182@@ -699,6 +703,8 @@ void do_exit(long code)
86183 struct task_struct *tsk = current;
86184 int group_dead;
86185
86186+ set_fs(USER_DS);
86187+
86188 profile_task_exit(tsk);
86189
86190 WARN_ON(blk_needs_flush_plug(tsk));
86191@@ -715,7 +721,6 @@ void do_exit(long code)
86192 * mm_release()->clear_child_tid() from writing to a user-controlled
86193 * kernel address.
86194 */
86195- set_fs(USER_DS);
86196
86197 ptrace_event(PTRACE_EVENT_EXIT, code);
86198
86199@@ -774,6 +779,9 @@ void do_exit(long code)
86200 tsk->exit_code = code;
86201 taskstats_exit(tsk, group_dead);
86202
86203+ gr_acl_handle_psacct(tsk, code);
86204+ gr_acl_handle_exit();
86205+
86206 exit_mm(tsk);
86207
86208 if (group_dead)
86209@@ -893,7 +901,7 @@ SYSCALL_DEFINE1(exit, int, error_code)
86210 * Take down every thread in the group. This is called by fatal signals
86211 * as well as by sys_exit_group (below).
86212 */
86213-void
86214+__noreturn void
86215 do_group_exit(int exit_code)
86216 {
86217 struct signal_struct *sig = current->signal;
86218diff --git a/kernel/fork.c b/kernel/fork.c
86219index 68b9226..0700bf6 100644
86220--- a/kernel/fork.c
86221+++ b/kernel/fork.c
86222@@ -183,6 +183,48 @@ void thread_info_cache_init(void)
86223 # endif
86224 #endif
86225
86226+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
86227+static inline struct thread_info *gr_alloc_thread_info_node(struct task_struct *tsk,
86228+ int node, void **lowmem_stack)
86229+{
86230+ struct page *pages[THREAD_SIZE / PAGE_SIZE];
86231+ void *ret = NULL;
86232+ unsigned int i;
86233+
86234+ *lowmem_stack = alloc_thread_info_node(tsk, node);
86235+ if (*lowmem_stack == NULL)
86236+ goto out;
86237+
86238+ for (i = 0; i < THREAD_SIZE / PAGE_SIZE; i++)
86239+ pages[i] = virt_to_page(*lowmem_stack + (i * PAGE_SIZE));
86240+
86241+ /* use VM_IOREMAP to gain THREAD_SIZE alignment */
86242+ ret = vmap(pages, THREAD_SIZE / PAGE_SIZE, VM_IOREMAP, PAGE_KERNEL);
86243+ if (ret == NULL) {
86244+ free_thread_info(*lowmem_stack);
86245+ *lowmem_stack = NULL;
86246+ }
86247+
86248+out:
86249+ return ret;
86250+}
86251+
86252+static inline void gr_free_thread_info(struct task_struct *tsk, struct thread_info *ti)
86253+{
86254+ unmap_process_stacks(tsk);
86255+}
86256+#else
86257+static inline struct thread_info *gr_alloc_thread_info_node(struct task_struct *tsk,
86258+ int node, void **lowmem_stack)
86259+{
86260+ return alloc_thread_info_node(tsk, node);
86261+}
86262+static inline void gr_free_thread_info(struct task_struct *tsk, struct thread_info *ti)
86263+{
86264+ free_thread_info(ti);
86265+}
86266+#endif
86267+
86268 /* SLAB cache for signal_struct structures (tsk->signal) */
86269 static struct kmem_cache *signal_cachep;
86270
86271@@ -201,18 +243,22 @@ struct kmem_cache *vm_area_cachep;
86272 /* SLAB cache for mm_struct structures (tsk->mm) */
86273 static struct kmem_cache *mm_cachep;
86274
86275-static void account_kernel_stack(struct thread_info *ti, int account)
86276+static void account_kernel_stack(struct task_struct *tsk, struct thread_info *ti, int account)
86277 {
86278+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
86279+ struct zone *zone = page_zone(virt_to_page(tsk->lowmem_stack));
86280+#else
86281 struct zone *zone = page_zone(virt_to_page(ti));
86282+#endif
86283
86284 mod_zone_page_state(zone, NR_KERNEL_STACK, account);
86285 }
86286
86287 void free_task(struct task_struct *tsk)
86288 {
86289- account_kernel_stack(tsk->stack, -1);
86290+ account_kernel_stack(tsk, tsk->stack, -1);
86291 arch_release_thread_info(tsk->stack);
86292- free_thread_info(tsk->stack);
86293+ gr_free_thread_info(tsk, tsk->stack);
86294 rt_mutex_debug_task_free(tsk);
86295 ftrace_graph_exit_task(tsk);
86296 put_seccomp_filter(tsk);
86297@@ -299,6 +345,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
86298 struct task_struct *tsk;
86299 struct thread_info *ti;
86300 unsigned long *stackend;
86301+ void *lowmem_stack;
86302 int node = tsk_fork_get_node(orig);
86303 int err;
86304
86305@@ -306,7 +353,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
86306 if (!tsk)
86307 return NULL;
86308
86309- ti = alloc_thread_info_node(tsk, node);
86310+ ti = gr_alloc_thread_info_node(tsk, node, &lowmem_stack);
86311 if (!ti)
86312 goto free_tsk;
86313
86314@@ -315,6 +362,9 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
86315 goto free_ti;
86316
86317 tsk->stack = ti;
86318+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
86319+ tsk->lowmem_stack = lowmem_stack;
86320+#endif
86321
86322 setup_thread_stack(tsk, orig);
86323 clear_user_return_notifier(tsk);
86324@@ -323,7 +373,7 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
86325 *stackend = STACK_END_MAGIC; /* for overflow detection */
86326
86327 #ifdef CONFIG_CC_STACKPROTECTOR
86328- tsk->stack_canary = get_random_int();
86329+ tsk->stack_canary = pax_get_random_long();
86330 #endif
86331
86332 /*
86333@@ -337,24 +387,92 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
86334 tsk->splice_pipe = NULL;
86335 tsk->task_frag.page = NULL;
86336
86337- account_kernel_stack(ti, 1);
86338+ account_kernel_stack(tsk, ti, 1);
86339
86340 return tsk;
86341
86342 free_ti:
86343- free_thread_info(ti);
86344+ gr_free_thread_info(tsk, ti);
86345 free_tsk:
86346 free_task_struct(tsk);
86347 return NULL;
86348 }
86349
86350 #ifdef CONFIG_MMU
86351-static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
86352+static struct vm_area_struct *dup_vma(struct mm_struct *mm, struct mm_struct *oldmm, struct vm_area_struct *mpnt)
86353+{
86354+ struct vm_area_struct *tmp;
86355+ unsigned long charge;
86356+ struct file *file;
86357+ int retval;
86358+
86359+ charge = 0;
86360+ if (mpnt->vm_flags & VM_ACCOUNT) {
86361+ unsigned long len = vma_pages(mpnt);
86362+
86363+ if (security_vm_enough_memory_mm(oldmm, len)) /* sic */
86364+ goto fail_nomem;
86365+ charge = len;
86366+ }
86367+ tmp = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
86368+ if (!tmp)
86369+ goto fail_nomem;
86370+ *tmp = *mpnt;
86371+ tmp->vm_mm = mm;
86372+ INIT_LIST_HEAD(&tmp->anon_vma_chain);
86373+ retval = vma_dup_policy(mpnt, tmp);
86374+ if (retval)
86375+ goto fail_nomem_policy;
86376+ if (anon_vma_fork(tmp, mpnt))
86377+ goto fail_nomem_anon_vma_fork;
86378+ tmp->vm_flags &= ~VM_LOCKED;
86379+ tmp->vm_next = tmp->vm_prev = NULL;
86380+ tmp->vm_mirror = NULL;
86381+ file = tmp->vm_file;
86382+ if (file) {
86383+ struct inode *inode = file_inode(file);
86384+ struct address_space *mapping = file->f_mapping;
86385+
86386+ get_file(file);
86387+ if (tmp->vm_flags & VM_DENYWRITE)
86388+ atomic_dec(&inode->i_writecount);
86389+ mutex_lock(&mapping->i_mmap_mutex);
86390+ if (tmp->vm_flags & VM_SHARED)
86391+ mapping->i_mmap_writable++;
86392+ flush_dcache_mmap_lock(mapping);
86393+ /* insert tmp into the share list, just after mpnt */
86394+ if (unlikely(tmp->vm_flags & VM_NONLINEAR))
86395+ vma_nonlinear_insert(tmp, &mapping->i_mmap_nonlinear);
86396+ else
86397+ vma_interval_tree_insert_after(tmp, mpnt, &mapping->i_mmap);
86398+ flush_dcache_mmap_unlock(mapping);
86399+ mutex_unlock(&mapping->i_mmap_mutex);
86400+ }
86401+
86402+ /*
86403+ * Clear hugetlb-related page reserves for children. This only
86404+ * affects MAP_PRIVATE mappings. Faults generated by the child
86405+ * are not guaranteed to succeed, even if read-only
86406+ */
86407+ if (is_vm_hugetlb_page(tmp))
86408+ reset_vma_resv_huge_pages(tmp);
86409+
86410+ return tmp;
86411+
86412+fail_nomem_anon_vma_fork:
86413+ mpol_put(vma_policy(tmp));
86414+fail_nomem_policy:
86415+ kmem_cache_free(vm_area_cachep, tmp);
86416+fail_nomem:
86417+ vm_unacct_memory(charge);
86418+ return NULL;
86419+}
86420+
86421+static __latent_entropy int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
86422 {
86423 struct vm_area_struct *mpnt, *tmp, *prev, **pprev;
86424 struct rb_node **rb_link, *rb_parent;
86425 int retval;
86426- unsigned long charge;
86427
86428 uprobe_start_dup_mmap();
86429 down_write(&oldmm->mmap_sem);
86430@@ -383,55 +501,15 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
86431
86432 prev = NULL;
86433 for (mpnt = oldmm->mmap; mpnt; mpnt = mpnt->vm_next) {
86434- struct file *file;
86435-
86436 if (mpnt->vm_flags & VM_DONTCOPY) {
86437 vm_stat_account(mm, mpnt->vm_flags, mpnt->vm_file,
86438 -vma_pages(mpnt));
86439 continue;
86440 }
86441- charge = 0;
86442- if (mpnt->vm_flags & VM_ACCOUNT) {
86443- unsigned long len = vma_pages(mpnt);
86444-
86445- if (security_vm_enough_memory_mm(oldmm, len)) /* sic */
86446- goto fail_nomem;
86447- charge = len;
86448- }
86449- tmp = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
86450- if (!tmp)
86451- goto fail_nomem;
86452- *tmp = *mpnt;
86453- INIT_LIST_HEAD(&tmp->anon_vma_chain);
86454- retval = vma_dup_policy(mpnt, tmp);
86455- if (retval)
86456- goto fail_nomem_policy;
86457- tmp->vm_mm = mm;
86458- if (anon_vma_fork(tmp, mpnt))
86459- goto fail_nomem_anon_vma_fork;
86460- tmp->vm_flags &= ~VM_LOCKED;
86461- tmp->vm_next = tmp->vm_prev = NULL;
86462- file = tmp->vm_file;
86463- if (file) {
86464- struct inode *inode = file_inode(file);
86465- struct address_space *mapping = file->f_mapping;
86466-
86467- get_file(file);
86468- if (tmp->vm_flags & VM_DENYWRITE)
86469- atomic_dec(&inode->i_writecount);
86470- mutex_lock(&mapping->i_mmap_mutex);
86471- if (tmp->vm_flags & VM_SHARED)
86472- mapping->i_mmap_writable++;
86473- flush_dcache_mmap_lock(mapping);
86474- /* insert tmp into the share list, just after mpnt */
86475- if (unlikely(tmp->vm_flags & VM_NONLINEAR))
86476- vma_nonlinear_insert(tmp,
86477- &mapping->i_mmap_nonlinear);
86478- else
86479- vma_interval_tree_insert_after(tmp, mpnt,
86480- &mapping->i_mmap);
86481- flush_dcache_mmap_unlock(mapping);
86482- mutex_unlock(&mapping->i_mmap_mutex);
86483+ tmp = dup_vma(mm, oldmm, mpnt);
86484+ if (!tmp) {
86485+ retval = -ENOMEM;
86486+ goto out;
86487 }
86488
86489 /*
86490@@ -463,6 +541,31 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
86491 if (retval)
86492 goto out;
86493 }
86494+
86495+#ifdef CONFIG_PAX_SEGMEXEC
86496+ if (oldmm->pax_flags & MF_PAX_SEGMEXEC) {
86497+ struct vm_area_struct *mpnt_m;
86498+
86499+ for (mpnt = oldmm->mmap, mpnt_m = mm->mmap; mpnt; mpnt = mpnt->vm_next, mpnt_m = mpnt_m->vm_next) {
86500+ BUG_ON(!mpnt_m || mpnt_m->vm_mirror || mpnt->vm_mm != oldmm || mpnt_m->vm_mm != mm);
86501+
86502+ if (!mpnt->vm_mirror)
86503+ continue;
86504+
86505+ if (mpnt->vm_end <= SEGMEXEC_TASK_SIZE) {
86506+ BUG_ON(mpnt->vm_mirror->vm_mirror != mpnt);
86507+ mpnt->vm_mirror = mpnt_m;
86508+ } else {
86509+ BUG_ON(mpnt->vm_mirror->vm_mirror == mpnt || mpnt->vm_mirror->vm_mirror->vm_mm != mm);
86510+ mpnt_m->vm_mirror = mpnt->vm_mirror->vm_mirror;
86511+ mpnt_m->vm_mirror->vm_mirror = mpnt_m;
86512+ mpnt->vm_mirror->vm_mirror = mpnt;
86513+ }
86514+ }
86515+ BUG_ON(mpnt_m);
86516+ }
86517+#endif
86518+
86519 /* a new mm has just been created */
86520 arch_dup_mmap(oldmm, mm);
86521 retval = 0;
86522@@ -472,14 +575,6 @@ out:
86523 up_write(&oldmm->mmap_sem);
86524 uprobe_end_dup_mmap();
86525 return retval;
86526-fail_nomem_anon_vma_fork:
86527- mpol_put(vma_policy(tmp));
86528-fail_nomem_policy:
86529- kmem_cache_free(vm_area_cachep, tmp);
86530-fail_nomem:
86531- retval = -ENOMEM;
86532- vm_unacct_memory(charge);
86533- goto out;
86534 }
86535
86536 static inline int mm_alloc_pgd(struct mm_struct *mm)
86537@@ -698,8 +793,8 @@ struct mm_struct *mm_access(struct task_struct *task, unsigned int mode)
86538 return ERR_PTR(err);
86539
86540 mm = get_task_mm(task);
86541- if (mm && mm != current->mm &&
86542- !ptrace_may_access(task, mode)) {
86543+ if (mm && ((mm != current->mm && !ptrace_may_access(task, mode)) ||
86544+ (mode == PTRACE_MODE_ATTACH && (gr_handle_proc_ptrace(task) || gr_acl_handle_procpidmem(task))))) {
86545 mmput(mm);
86546 mm = ERR_PTR(-EACCES);
86547 }
86548@@ -918,13 +1013,20 @@ static int copy_fs(unsigned long clone_flags, struct task_struct *tsk)
86549 spin_unlock(&fs->lock);
86550 return -EAGAIN;
86551 }
86552- fs->users++;
86553+ atomic_inc(&fs->users);
86554 spin_unlock(&fs->lock);
86555 return 0;
86556 }
86557 tsk->fs = copy_fs_struct(fs);
86558 if (!tsk->fs)
86559 return -ENOMEM;
86560+ /* Carry through gr_chroot_dentry and is_chrooted instead
86561+ of recomputing it here. Already copied when the task struct
86562+ is duplicated. This allows pivot_root to not be treated as
86563+ a chroot
86564+ */
86565+ //gr_set_chroot_entries(tsk, &tsk->fs->root);
86566+
86567 return 0;
86568 }
86569
86570@@ -1133,7 +1235,7 @@ init_task_pid(struct task_struct *task, enum pid_type type, struct pid *pid)
86571 * parts of the process environment (as per the clone
86572 * flags). The actual kick-off is left to the caller.
86573 */
86574-static struct task_struct *copy_process(unsigned long clone_flags,
86575+static __latent_entropy struct task_struct *copy_process(unsigned long clone_flags,
86576 unsigned long stack_start,
86577 unsigned long stack_size,
86578 int __user *child_tidptr,
86579@@ -1205,6 +1307,9 @@ static struct task_struct *copy_process(unsigned long clone_flags,
86580 DEBUG_LOCKS_WARN_ON(!p->softirqs_enabled);
86581 #endif
86582 retval = -EAGAIN;
86583+
86584+ gr_learn_resource(p, RLIMIT_NPROC, atomic_read(&p->real_cred->user->processes), 0);
86585+
86586 if (atomic_read(&p->real_cred->user->processes) >=
86587 task_rlimit(p, RLIMIT_NPROC)) {
86588 if (p->real_cred->user != INIT_USER &&
86589@@ -1452,6 +1557,11 @@ static struct task_struct *copy_process(unsigned long clone_flags,
86590 goto bad_fork_free_pid;
86591 }
86592
86593+ /* synchronizes with gr_set_acls()
86594+ we need to call this past the point of no return for fork()
86595+ */
86596+ gr_copy_label(p);
86597+
86598 if (likely(p->pid)) {
86599 ptrace_init_task(p, (clone_flags & CLONE_PTRACE) || trace);
86600
86601@@ -1541,6 +1651,8 @@ bad_fork_cleanup_count:
86602 bad_fork_free:
86603 free_task(p);
86604 fork_out:
86605+ gr_log_forkfail(retval);
86606+
86607 return ERR_PTR(retval);
86608 }
86609
86610@@ -1602,6 +1714,7 @@ long do_fork(unsigned long clone_flags,
86611
86612 p = copy_process(clone_flags, stack_start, stack_size,
86613 child_tidptr, NULL, trace);
86614+ add_latent_entropy();
86615 /*
86616 * Do this prior waking up the new thread - the thread pointer
86617 * might get invalid after that point, if the thread exits quickly.
86618@@ -1618,6 +1731,8 @@ long do_fork(unsigned long clone_flags,
86619 if (clone_flags & CLONE_PARENT_SETTID)
86620 put_user(nr, parent_tidptr);
86621
86622+ gr_handle_brute_check();
86623+
86624 if (clone_flags & CLONE_VFORK) {
86625 p->vfork_done = &vfork;
86626 init_completion(&vfork);
86627@@ -1736,7 +1851,7 @@ void __init proc_caches_init(void)
86628 mm_cachep = kmem_cache_create("mm_struct",
86629 sizeof(struct mm_struct), ARCH_MIN_MMSTRUCT_ALIGN,
86630 SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_NOTRACK, NULL);
86631- vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC);
86632+ vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC | SLAB_NO_SANITIZE);
86633 mmap_init();
86634 nsproxy_cache_init();
86635 }
86636@@ -1776,7 +1891,7 @@ static int unshare_fs(unsigned long unshare_flags, struct fs_struct **new_fsp)
86637 return 0;
86638
86639 /* don't need lock here; in the worst case we'll do useless copy */
86640- if (fs->users == 1)
86641+ if (atomic_read(&fs->users) == 1)
86642 return 0;
86643
86644 *new_fsp = copy_fs_struct(fs);
86645@@ -1883,7 +1998,8 @@ SYSCALL_DEFINE1(unshare, unsigned long, unshare_flags)
86646 fs = current->fs;
86647 spin_lock(&fs->lock);
86648 current->fs = new_fs;
86649- if (--fs->users)
86650+ gr_set_chroot_entries(current, &current->fs->root);
86651+ if (atomic_dec_return(&fs->users))
86652 new_fs = NULL;
86653 else
86654 new_fs = fs;
86655diff --git a/kernel/futex.c b/kernel/futex.c
86656index de938d2..c566038 100644
86657--- a/kernel/futex.c
86658+++ b/kernel/futex.c
86659@@ -202,7 +202,7 @@ struct futex_pi_state {
86660 atomic_t refcount;
86661
86662 union futex_key key;
86663-};
86664+} __randomize_layout;
86665
86666 /**
86667 * struct futex_q - The hashed futex queue entry, one per waiting task
86668@@ -236,7 +236,7 @@ struct futex_q {
86669 struct rt_mutex_waiter *rt_waiter;
86670 union futex_key *requeue_pi_key;
86671 u32 bitset;
86672-};
86673+} __randomize_layout;
86674
86675 static const struct futex_q futex_q_init = {
86676 /* list gets initialized in queue_me()*/
86677@@ -394,6 +394,11 @@ get_futex_key(u32 __user *uaddr, int fshared, union futex_key *key, int rw)
86678 struct page *page, *page_head;
86679 int err, ro = 0;
86680
86681+#ifdef CONFIG_PAX_SEGMEXEC
86682+ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && address >= SEGMEXEC_TASK_SIZE)
86683+ return -EFAULT;
86684+#endif
86685+
86686 /*
86687 * The futex address must be "naturally" aligned.
86688 */
86689@@ -593,7 +598,7 @@ static int cmpxchg_futex_value_locked(u32 *curval, u32 __user *uaddr,
86690
86691 static int get_futex_value_locked(u32 *dest, u32 __user *from)
86692 {
86693- int ret;
86694+ unsigned long ret;
86695
86696 pagefault_disable();
86697 ret = __copy_from_user_inatomic(dest, from, sizeof(u32));
86698@@ -3033,6 +3038,7 @@ static void __init futex_detect_cmpxchg(void)
86699 {
86700 #ifndef CONFIG_HAVE_FUTEX_CMPXCHG
86701 u32 curval;
86702+ mm_segment_t oldfs;
86703
86704 /*
86705 * This will fail and we want it. Some arch implementations do
86706@@ -3044,8 +3050,11 @@ static void __init futex_detect_cmpxchg(void)
86707 * implementation, the non-functional ones will return
86708 * -ENOSYS.
86709 */
86710+ oldfs = get_fs();
86711+ set_fs(USER_DS);
86712 if (cmpxchg_futex_value_locked(&curval, NULL, 0, 0) == -EFAULT)
86713 futex_cmpxchg_enabled = 1;
86714+ set_fs(oldfs);
86715 #endif
86716 }
86717
86718diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
86719index 55c8c93..9ba7ad6 100644
86720--- a/kernel/futex_compat.c
86721+++ b/kernel/futex_compat.c
86722@@ -32,7 +32,7 @@ fetch_robust_entry(compat_uptr_t *uentry, struct robust_list __user **entry,
86723 return 0;
86724 }
86725
86726-static void __user *futex_uaddr(struct robust_list __user *entry,
86727+static void __user __intentional_overflow(-1) *futex_uaddr(struct robust_list __user *entry,
86728 compat_long_t futex_offset)
86729 {
86730 compat_uptr_t base = ptr_to_compat(entry);
86731diff --git a/kernel/gcov/base.c b/kernel/gcov/base.c
86732index f45b75b..bfac6d5 100644
86733--- a/kernel/gcov/base.c
86734+++ b/kernel/gcov/base.c
86735@@ -108,11 +108,6 @@ void gcov_enable_events(void)
86736 }
86737
86738 #ifdef CONFIG_MODULES
86739-static inline int within(void *addr, void *start, unsigned long size)
86740-{
86741- return ((addr >= start) && (addr < start + size));
86742-}
86743-
86744 /* Update list and generate events when modules are unloaded. */
86745 static int gcov_module_notifier(struct notifier_block *nb, unsigned long event,
86746 void *data)
86747@@ -127,7 +122,7 @@ static int gcov_module_notifier(struct notifier_block *nb, unsigned long event,
86748
86749 /* Remove entries located in module from linked list. */
86750 while ((info = gcov_info_next(info))) {
86751- if (within(info, mod->module_core, mod->core_size)) {
86752+ if (within_module_core_rw((unsigned long)info, mod)) {
86753 gcov_info_unlink(prev, info);
86754 if (gcov_events_enabled)
86755 gcov_event(GCOV_REMOVE, info);
86756diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
86757index e0501fe..312edd6 100644
86758--- a/kernel/hrtimer.c
86759+++ b/kernel/hrtimer.c
86760@@ -1448,7 +1448,7 @@ void hrtimer_peek_ahead_timers(void)
86761 local_irq_restore(flags);
86762 }
86763
86764-static void run_hrtimer_softirq(struct softirq_action *h)
86765+static __latent_entropy void run_hrtimer_softirq(void)
86766 {
86767 hrtimer_peek_ahead_timers();
86768 }
86769diff --git a/kernel/irq_work.c b/kernel/irq_work.c
86770index a82170e..5b01e7f 100644
86771--- a/kernel/irq_work.c
86772+++ b/kernel/irq_work.c
86773@@ -191,12 +191,13 @@ static int irq_work_cpu_notify(struct notifier_block *self,
86774 return NOTIFY_OK;
86775 }
86776
86777-static struct notifier_block cpu_notify;
86778+static struct notifier_block cpu_notify = {
86779+ .notifier_call = irq_work_cpu_notify,
86780+ .priority = 0,
86781+};
86782
86783 static __init int irq_work_init_cpu_notifier(void)
86784 {
86785- cpu_notify.notifier_call = irq_work_cpu_notify;
86786- cpu_notify.priority = 0;
86787 register_cpu_notifier(&cpu_notify);
86788 return 0;
86789 }
86790diff --git a/kernel/jump_label.c b/kernel/jump_label.c
86791index 9019f15..9a3c42e 100644
86792--- a/kernel/jump_label.c
86793+++ b/kernel/jump_label.c
86794@@ -14,6 +14,7 @@
86795 #include <linux/err.h>
86796 #include <linux/static_key.h>
86797 #include <linux/jump_label_ratelimit.h>
86798+#include <linux/mm.h>
86799
86800 #ifdef HAVE_JUMP_LABEL
86801
86802@@ -51,7 +52,9 @@ jump_label_sort_entries(struct jump_entry *start, struct jump_entry *stop)
86803
86804 size = (((unsigned long)stop - (unsigned long)start)
86805 / sizeof(struct jump_entry));
86806+ pax_open_kernel();
86807 sort(start, size, sizeof(struct jump_entry), jump_label_cmp, NULL);
86808+ pax_close_kernel();
86809 }
86810
86811 static void jump_label_update(struct static_key *key, int enable);
86812@@ -363,10 +366,12 @@ static void jump_label_invalidate_module_init(struct module *mod)
86813 struct jump_entry *iter_stop = iter_start + mod->num_jump_entries;
86814 struct jump_entry *iter;
86815
86816+ pax_open_kernel();
86817 for (iter = iter_start; iter < iter_stop; iter++) {
86818 if (within_module_init(iter->code, mod))
86819 iter->code = 0;
86820 }
86821+ pax_close_kernel();
86822 }
86823
86824 static int
86825diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c
86826index cb0cf37..b69e161 100644
86827--- a/kernel/kallsyms.c
86828+++ b/kernel/kallsyms.c
86829@@ -11,6 +11,9 @@
86830 * Changed the compression method from stem compression to "table lookup"
86831 * compression (see scripts/kallsyms.c for a more complete description)
86832 */
86833+#ifdef CONFIG_GRKERNSEC_HIDESYM
86834+#define __INCLUDED_BY_HIDESYM 1
86835+#endif
86836 #include <linux/kallsyms.h>
86837 #include <linux/module.h>
86838 #include <linux/init.h>
86839@@ -54,12 +57,33 @@ extern const unsigned long kallsyms_markers[] __weak;
86840
86841 static inline int is_kernel_inittext(unsigned long addr)
86842 {
86843+ if (system_state != SYSTEM_BOOTING)
86844+ return 0;
86845+
86846 if (addr >= (unsigned long)_sinittext
86847 && addr <= (unsigned long)_einittext)
86848 return 1;
86849 return 0;
86850 }
86851
86852+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
86853+#ifdef CONFIG_MODULES
86854+static inline int is_module_text(unsigned long addr)
86855+{
86856+ if ((unsigned long)MODULES_EXEC_VADDR <= addr && addr <= (unsigned long)MODULES_EXEC_END)
86857+ return 1;
86858+
86859+ addr = ktla_ktva(addr);
86860+ return (unsigned long)MODULES_EXEC_VADDR <= addr && addr <= (unsigned long)MODULES_EXEC_END;
86861+}
86862+#else
86863+static inline int is_module_text(unsigned long addr)
86864+{
86865+ return 0;
86866+}
86867+#endif
86868+#endif
86869+
86870 static inline int is_kernel_text(unsigned long addr)
86871 {
86872 if ((addr >= (unsigned long)_stext && addr <= (unsigned long)_etext) ||
86873@@ -70,13 +94,28 @@ static inline int is_kernel_text(unsigned long addr)
86874
86875 static inline int is_kernel(unsigned long addr)
86876 {
86877+
86878+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
86879+ if (is_kernel_text(addr) || is_kernel_inittext(addr))
86880+ return 1;
86881+
86882+ if (ktla_ktva((unsigned long)_text) <= addr && addr < (unsigned long)_end)
86883+#else
86884 if (addr >= (unsigned long)_stext && addr <= (unsigned long)_end)
86885+#endif
86886+
86887 return 1;
86888 return in_gate_area_no_mm(addr);
86889 }
86890
86891 static int is_ksym_addr(unsigned long addr)
86892 {
86893+
86894+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
86895+ if (is_module_text(addr))
86896+ return 0;
86897+#endif
86898+
86899 if (all_var)
86900 return is_kernel(addr);
86901
86902@@ -481,7 +520,6 @@ static unsigned long get_ksymbol_core(struct kallsym_iter *iter)
86903
86904 static void reset_iter(struct kallsym_iter *iter, loff_t new_pos)
86905 {
86906- iter->name[0] = '\0';
86907 iter->nameoff = get_symbol_offset(new_pos);
86908 iter->pos = new_pos;
86909 }
86910@@ -529,6 +567,11 @@ static int s_show(struct seq_file *m, void *p)
86911 {
86912 struct kallsym_iter *iter = m->private;
86913
86914+#ifdef CONFIG_GRKERNSEC_HIDESYM
86915+ if (!uid_eq(current_uid(), GLOBAL_ROOT_UID))
86916+ return 0;
86917+#endif
86918+
86919 /* Some debugging symbols have no name. Ignore them. */
86920 if (!iter->name[0])
86921 return 0;
86922@@ -542,6 +585,7 @@ static int s_show(struct seq_file *m, void *p)
86923 */
86924 type = iter->exported ? toupper(iter->type) :
86925 tolower(iter->type);
86926+
86927 seq_printf(m, "%pK %c %s\t[%s]\n", (void *)iter->value,
86928 type, iter->name, iter->module_name);
86929 } else
86930@@ -567,7 +611,7 @@ static int kallsyms_open(struct inode *inode, struct file *file)
86931 struct kallsym_iter *iter;
86932 int ret;
86933
86934- iter = kmalloc(sizeof(*iter), GFP_KERNEL);
86935+ iter = kzalloc(sizeof(*iter), GFP_KERNEL);
86936 if (!iter)
86937 return -ENOMEM;
86938 reset_iter(iter, 0);
86939diff --git a/kernel/kcmp.c b/kernel/kcmp.c
86940index e30ac0f..3528cac 100644
86941--- a/kernel/kcmp.c
86942+++ b/kernel/kcmp.c
86943@@ -99,6 +99,10 @@ SYSCALL_DEFINE5(kcmp, pid_t, pid1, pid_t, pid2, int, type,
86944 struct task_struct *task1, *task2;
86945 int ret;
86946
86947+#ifdef CONFIG_GRKERNSEC
86948+ return -ENOSYS;
86949+#endif
86950+
86951 rcu_read_lock();
86952
86953 /*
86954diff --git a/kernel/kexec.c b/kernel/kexec.c
86955index 28c5706..bfc8388 100644
86956--- a/kernel/kexec.c
86957+++ b/kernel/kexec.c
86958@@ -1046,7 +1046,8 @@ COMPAT_SYSCALL_DEFINE4(kexec_load, compat_ulong_t, entry,
86959 compat_ulong_t, flags)
86960 {
86961 struct compat_kexec_segment in;
86962- struct kexec_segment out, __user *ksegments;
86963+ struct kexec_segment out;
86964+ struct kexec_segment __user *ksegments;
86965 unsigned long i, result;
86966
86967 /* Don't allow clients that don't understand the native
86968diff --git a/kernel/kmod.c b/kernel/kmod.c
86969index 6b375af..eaff670 100644
86970--- a/kernel/kmod.c
86971+++ b/kernel/kmod.c
86972@@ -75,7 +75,7 @@ static void free_modprobe_argv(struct subprocess_info *info)
86973 kfree(info->argv);
86974 }
86975
86976-static int call_modprobe(char *module_name, int wait)
86977+static int call_modprobe(char *module_name, char *module_param, int wait)
86978 {
86979 struct subprocess_info *info;
86980 static char *envp[] = {
86981@@ -85,7 +85,7 @@ static int call_modprobe(char *module_name, int wait)
86982 NULL
86983 };
86984
86985- char **argv = kmalloc(sizeof(char *[5]), GFP_KERNEL);
86986+ char **argv = kmalloc(sizeof(char *[6]), GFP_KERNEL);
86987 if (!argv)
86988 goto out;
86989
86990@@ -97,7 +97,8 @@ static int call_modprobe(char *module_name, int wait)
86991 argv[1] = "-q";
86992 argv[2] = "--";
86993 argv[3] = module_name; /* check free_modprobe_argv() */
86994- argv[4] = NULL;
86995+ argv[4] = module_param;
86996+ argv[5] = NULL;
86997
86998 info = call_usermodehelper_setup(modprobe_path, argv, envp, GFP_KERNEL,
86999 NULL, free_modprobe_argv, NULL);
87000@@ -129,9 +130,8 @@ out:
87001 * If module auto-loading support is disabled then this function
87002 * becomes a no-operation.
87003 */
87004-int __request_module(bool wait, const char *fmt, ...)
87005+static int ____request_module(bool wait, char *module_param, const char *fmt, va_list ap)
87006 {
87007- va_list args;
87008 char module_name[MODULE_NAME_LEN];
87009 unsigned int max_modprobes;
87010 int ret;
87011@@ -150,9 +150,7 @@ int __request_module(bool wait, const char *fmt, ...)
87012 if (!modprobe_path[0])
87013 return 0;
87014
87015- va_start(args, fmt);
87016- ret = vsnprintf(module_name, MODULE_NAME_LEN, fmt, args);
87017- va_end(args);
87018+ ret = vsnprintf(module_name, MODULE_NAME_LEN, fmt, ap);
87019 if (ret >= MODULE_NAME_LEN)
87020 return -ENAMETOOLONG;
87021
87022@@ -160,6 +158,20 @@ int __request_module(bool wait, const char *fmt, ...)
87023 if (ret)
87024 return ret;
87025
87026+#ifdef CONFIG_GRKERNSEC_MODHARDEN
87027+ if (uid_eq(current_uid(), GLOBAL_ROOT_UID)) {
87028+ /* hack to workaround consolekit/udisks stupidity */
87029+ read_lock(&tasklist_lock);
87030+ if (!strcmp(current->comm, "mount") &&
87031+ current->real_parent && !strncmp(current->real_parent->comm, "udisk", 5)) {
87032+ read_unlock(&tasklist_lock);
87033+ printk(KERN_ALERT "grsec: denied attempt to auto-load fs module %.64s by udisks\n", module_name);
87034+ return -EPERM;
87035+ }
87036+ read_unlock(&tasklist_lock);
87037+ }
87038+#endif
87039+
87040 /* If modprobe needs a service that is in a module, we get a recursive
87041 * loop. Limit the number of running kmod threads to max_threads/2 or
87042 * MAX_KMOD_CONCURRENT, whichever is the smaller. A cleaner method
87043@@ -188,11 +200,52 @@ int __request_module(bool wait, const char *fmt, ...)
87044
87045 trace_module_request(module_name, wait, _RET_IP_);
87046
87047- ret = call_modprobe(module_name, wait ? UMH_WAIT_PROC : UMH_WAIT_EXEC);
87048+ ret = call_modprobe(module_name, module_param, wait ? UMH_WAIT_PROC : UMH_WAIT_EXEC);
87049
87050 atomic_dec(&kmod_concurrent);
87051 return ret;
87052 }
87053+
87054+int ___request_module(bool wait, char *module_param, const char *fmt, ...)
87055+{
87056+ va_list args;
87057+ int ret;
87058+
87059+ va_start(args, fmt);
87060+ ret = ____request_module(wait, module_param, fmt, args);
87061+ va_end(args);
87062+
87063+ return ret;
87064+}
87065+
87066+int __request_module(bool wait, const char *fmt, ...)
87067+{
87068+ va_list args;
87069+ int ret;
87070+
87071+#ifdef CONFIG_GRKERNSEC_MODHARDEN
87072+ if (!uid_eq(current_uid(), GLOBAL_ROOT_UID)) {
87073+ char module_param[MODULE_NAME_LEN];
87074+
87075+ memset(module_param, 0, sizeof(module_param));
87076+
87077+ snprintf(module_param, sizeof(module_param) - 1, "grsec_modharden_normal%u_", GR_GLOBAL_UID(current_uid()));
87078+
87079+ va_start(args, fmt);
87080+ ret = ____request_module(wait, module_param, fmt, args);
87081+ va_end(args);
87082+
87083+ return ret;
87084+ }
87085+#endif
87086+
87087+ va_start(args, fmt);
87088+ ret = ____request_module(wait, NULL, fmt, args);
87089+ va_end(args);
87090+
87091+ return ret;
87092+}
87093+
87094 EXPORT_SYMBOL(__request_module);
87095 #endif /* CONFIG_MODULES */
87096
87097@@ -218,6 +271,20 @@ static int ____call_usermodehelper(void *data)
87098 */
87099 set_user_nice(current, 0);
87100
87101+#ifdef CONFIG_GRKERNSEC
87102+ /* this is race-free as far as userland is concerned as we copied
87103+ out the path to be used prior to this point and are now operating
87104+ on that copy
87105+ */
87106+ if ((strncmp(sub_info->path, "/sbin/", 6) && strncmp(sub_info->path, "/usr/lib/", 9) &&
87107+ strncmp(sub_info->path, "/lib/", 5) && strncmp(sub_info->path, "/lib64/", 7) &&
87108+ strcmp(sub_info->path, "/usr/share/apport/apport")) || strstr(sub_info->path, "..")) {
87109+ printk(KERN_ALERT "grsec: denied exec of usermode helper binary %.950s located outside of /sbin and system library paths\n", sub_info->path);
87110+ retval = -EPERM;
87111+ goto fail;
87112+ }
87113+#endif
87114+
87115 retval = -ENOMEM;
87116 new = prepare_kernel_cred(current);
87117 if (!new)
87118@@ -240,8 +307,8 @@ static int ____call_usermodehelper(void *data)
87119 commit_creds(new);
87120
87121 retval = do_execve(getname_kernel(sub_info->path),
87122- (const char __user *const __user *)sub_info->argv,
87123- (const char __user *const __user *)sub_info->envp);
87124+ (const char __user *const __force_user *)sub_info->argv,
87125+ (const char __user *const __force_user *)sub_info->envp);
87126 if (!retval)
87127 return 0;
87128
87129@@ -260,6 +327,10 @@ static int call_helper(void *data)
87130
87131 static void call_usermodehelper_freeinfo(struct subprocess_info *info)
87132 {
87133+#ifdef CONFIG_GRKERNSEC
87134+ kfree(info->path);
87135+ info->path = info->origpath;
87136+#endif
87137 if (info->cleanup)
87138 (*info->cleanup)(info);
87139 kfree(info);
87140@@ -303,7 +374,7 @@ static int wait_for_helper(void *data)
87141 *
87142 * Thus the __user pointer cast is valid here.
87143 */
87144- sys_wait4(pid, (int __user *)&ret, 0, NULL);
87145+ sys_wait4(pid, (int __force_user *)&ret, 0, NULL);
87146
87147 /*
87148 * If ret is 0, either ____call_usermodehelper failed and the
87149@@ -542,7 +613,12 @@ struct subprocess_info *call_usermodehelper_setup(char *path, char **argv,
87150 goto out;
87151
87152 INIT_WORK(&sub_info->work, __call_usermodehelper);
87153+#ifdef CONFIG_GRKERNSEC
87154+ sub_info->origpath = path;
87155+ sub_info->path = kstrdup(path, gfp_mask);
87156+#else
87157 sub_info->path = path;
87158+#endif
87159 sub_info->argv = argv;
87160 sub_info->envp = envp;
87161
87162@@ -650,7 +726,7 @@ EXPORT_SYMBOL(call_usermodehelper);
87163 static int proc_cap_handler(struct ctl_table *table, int write,
87164 void __user *buffer, size_t *lenp, loff_t *ppos)
87165 {
87166- struct ctl_table t;
87167+ ctl_table_no_const t;
87168 unsigned long cap_array[_KERNEL_CAPABILITY_U32S];
87169 kernel_cap_t new_cap;
87170 int err, i;
87171diff --git a/kernel/kprobes.c b/kernel/kprobes.c
87172index ceeadfc..11c18b6 100644
87173--- a/kernel/kprobes.c
87174+++ b/kernel/kprobes.c
87175@@ -31,6 +31,9 @@
87176 * <jkenisto@us.ibm.com> and Prasanna S Panchamukhi
87177 * <prasanna@in.ibm.com> added function-return probes.
87178 */
87179+#ifdef CONFIG_GRKERNSEC_HIDESYM
87180+#define __INCLUDED_BY_HIDESYM 1
87181+#endif
87182 #include <linux/kprobes.h>
87183 #include <linux/hash.h>
87184 #include <linux/init.h>
87185@@ -135,12 +138,12 @@ enum kprobe_slot_state {
87186
87187 static void *alloc_insn_page(void)
87188 {
87189- return module_alloc(PAGE_SIZE);
87190+ return module_alloc_exec(PAGE_SIZE);
87191 }
87192
87193 static void free_insn_page(void *page)
87194 {
87195- module_free(NULL, page);
87196+ module_free_exec(NULL, page);
87197 }
87198
87199 struct kprobe_insn_cache kprobe_insn_slots = {
87200@@ -2151,11 +2154,11 @@ static void __kprobes report_probe(struct seq_file *pi, struct kprobe *p,
87201 kprobe_type = "k";
87202
87203 if (sym)
87204- seq_printf(pi, "%p %s %s+0x%x %s ",
87205+ seq_printf(pi, "%pK %s %s+0x%x %s ",
87206 p->addr, kprobe_type, sym, offset,
87207 (modname ? modname : " "));
87208 else
87209- seq_printf(pi, "%p %s %p ",
87210+ seq_printf(pi, "%pK %s %pK ",
87211 p->addr, kprobe_type, p->addr);
87212
87213 if (!pp)
87214diff --git a/kernel/ksysfs.c b/kernel/ksysfs.c
87215index 2495a9b..071b906 100644
87216--- a/kernel/ksysfs.c
87217+++ b/kernel/ksysfs.c
87218@@ -49,6 +49,8 @@ static ssize_t uevent_helper_store(struct kobject *kobj,
87219 {
87220 if (count+1 > UEVENT_HELPER_PATH_LEN)
87221 return -ENOENT;
87222+ if (!capable(CAP_SYS_ADMIN))
87223+ return -EPERM;
87224 memcpy(uevent_helper, buf, count);
87225 uevent_helper[count] = '\0';
87226 if (count && uevent_helper[count-1] == '\n')
87227@@ -175,7 +177,7 @@ static ssize_t notes_read(struct file *filp, struct kobject *kobj,
87228 return count;
87229 }
87230
87231-static struct bin_attribute notes_attr = {
87232+static bin_attribute_no_const notes_attr __read_only = {
87233 .attr = {
87234 .name = "notes",
87235 .mode = S_IRUGO,
87236diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c
87237index d24e433..fa04fb8 100644
87238--- a/kernel/locking/lockdep.c
87239+++ b/kernel/locking/lockdep.c
87240@@ -597,6 +597,10 @@ static int static_obj(void *obj)
87241 end = (unsigned long) &_end,
87242 addr = (unsigned long) obj;
87243
87244+#ifdef CONFIG_PAX_KERNEXEC
87245+ start = ktla_ktva(start);
87246+#endif
87247+
87248 /*
87249 * static variable?
87250 */
87251@@ -738,6 +742,7 @@ register_lock_class(struct lockdep_map *lock, unsigned int subclass, int force)
87252 if (!static_obj(lock->key)) {
87253 debug_locks_off();
87254 printk("INFO: trying to register non-static key.\n");
87255+ printk("lock:%pS key:%pS.\n", lock, lock->key);
87256 printk("the code is fine but needs lockdep annotation.\n");
87257 printk("turning off the locking correctness validator.\n");
87258 dump_stack();
87259@@ -3079,7 +3084,7 @@ static int __lock_acquire(struct lockdep_map *lock, unsigned int subclass,
87260 if (!class)
87261 return 0;
87262 }
87263- atomic_inc((atomic_t *)&class->ops);
87264+ atomic_long_inc_unchecked((atomic_long_unchecked_t *)&class->ops);
87265 if (very_verbose(class)) {
87266 printk("\nacquire class [%p] %s", class->key, class->name);
87267 if (class->name_version > 1)
87268diff --git a/kernel/locking/lockdep_proc.c b/kernel/locking/lockdep_proc.c
87269index ef43ac4..2720dfa 100644
87270--- a/kernel/locking/lockdep_proc.c
87271+++ b/kernel/locking/lockdep_proc.c
87272@@ -65,7 +65,7 @@ static int l_show(struct seq_file *m, void *v)
87273 return 0;
87274 }
87275
87276- seq_printf(m, "%p", class->key);
87277+ seq_printf(m, "%pK", class->key);
87278 #ifdef CONFIG_DEBUG_LOCKDEP
87279 seq_printf(m, " OPS:%8ld", class->ops);
87280 #endif
87281@@ -83,7 +83,7 @@ static int l_show(struct seq_file *m, void *v)
87282
87283 list_for_each_entry(entry, &class->locks_after, entry) {
87284 if (entry->distance == 1) {
87285- seq_printf(m, " -> [%p] ", entry->class->key);
87286+ seq_printf(m, " -> [%pK] ", entry->class->key);
87287 print_name(m, entry->class);
87288 seq_puts(m, "\n");
87289 }
87290@@ -152,7 +152,7 @@ static int lc_show(struct seq_file *m, void *v)
87291 if (!class->key)
87292 continue;
87293
87294- seq_printf(m, "[%p] ", class->key);
87295+ seq_printf(m, "[%pK] ", class->key);
87296 print_name(m, class);
87297 seq_puts(m, "\n");
87298 }
87299@@ -496,7 +496,7 @@ static void seq_stats(struct seq_file *m, struct lock_stat_data *data)
87300 if (!i)
87301 seq_line(m, '-', 40-namelen, namelen);
87302
87303- snprintf(ip, sizeof(ip), "[<%p>]",
87304+ snprintf(ip, sizeof(ip), "[<%pK>]",
87305 (void *)class->contention_point[i]);
87306 seq_printf(m, "%40s %14lu %29s %pS\n",
87307 name, stats->contention_point[i],
87308@@ -511,7 +511,7 @@ static void seq_stats(struct seq_file *m, struct lock_stat_data *data)
87309 if (!i)
87310 seq_line(m, '-', 40-namelen, namelen);
87311
87312- snprintf(ip, sizeof(ip), "[<%p>]",
87313+ snprintf(ip, sizeof(ip), "[<%pK>]",
87314 (void *)class->contending_point[i]);
87315 seq_printf(m, "%40s %14lu %29s %pS\n",
87316 name, stats->contending_point[i],
87317diff --git a/kernel/locking/mcs_spinlock.c b/kernel/locking/mcs_spinlock.c
87318index 838dc9e..760e158 100644
87319--- a/kernel/locking/mcs_spinlock.c
87320+++ b/kernel/locking/mcs_spinlock.c
87321@@ -71,7 +71,7 @@ bool osq_lock(struct optimistic_spin_queue **lock)
87322 if (likely(prev == NULL))
87323 return true;
87324
87325- ACCESS_ONCE(prev->next) = node;
87326+ ACCESS_ONCE_RW(prev->next) = node;
87327
87328 /*
87329 * Normally @prev is untouchable after the above store; because at that
87330@@ -143,8 +143,8 @@ unqueue:
87331 * it will wait in Step-A.
87332 */
87333
87334- ACCESS_ONCE(next->prev) = prev;
87335- ACCESS_ONCE(prev->next) = next;
87336+ ACCESS_ONCE_RW(next->prev) = prev;
87337+ ACCESS_ONCE_RW(prev->next) = next;
87338
87339 return false;
87340 }
87341@@ -165,13 +165,13 @@ void osq_unlock(struct optimistic_spin_queue **lock)
87342 */
87343 next = xchg(&node->next, NULL);
87344 if (next) {
87345- ACCESS_ONCE(next->locked) = 1;
87346+ ACCESS_ONCE_RW(next->locked) = 1;
87347 return;
87348 }
87349
87350 next = osq_wait_next(lock, node, NULL);
87351 if (next)
87352- ACCESS_ONCE(next->locked) = 1;
87353+ ACCESS_ONCE_RW(next->locked) = 1;
87354 }
87355
87356 #endif
87357diff --git a/kernel/locking/mcs_spinlock.h b/kernel/locking/mcs_spinlock.h
87358index a2dbac4..e02a34a 100644
87359--- a/kernel/locking/mcs_spinlock.h
87360+++ b/kernel/locking/mcs_spinlock.h
87361@@ -81,7 +81,7 @@ void mcs_spin_lock(struct mcs_spinlock **lock, struct mcs_spinlock *node)
87362 */
87363 return;
87364 }
87365- ACCESS_ONCE(prev->next) = node;
87366+ ACCESS_ONCE_RW(prev->next) = node;
87367
87368 /* Wait until the lock holder passes the lock down. */
87369 arch_mcs_spin_lock_contended(&node->locked);
87370diff --git a/kernel/locking/mutex-debug.c b/kernel/locking/mutex-debug.c
87371index 5cf6731..ce3bc5a 100644
87372--- a/kernel/locking/mutex-debug.c
87373+++ b/kernel/locking/mutex-debug.c
87374@@ -49,21 +49,21 @@ void debug_mutex_free_waiter(struct mutex_waiter *waiter)
87375 }
87376
87377 void debug_mutex_add_waiter(struct mutex *lock, struct mutex_waiter *waiter,
87378- struct thread_info *ti)
87379+ struct task_struct *task)
87380 {
87381 SMP_DEBUG_LOCKS_WARN_ON(!spin_is_locked(&lock->wait_lock));
87382
87383 /* Mark the current thread as blocked on the lock: */
87384- ti->task->blocked_on = waiter;
87385+ task->blocked_on = waiter;
87386 }
87387
87388 void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
87389- struct thread_info *ti)
87390+ struct task_struct *task)
87391 {
87392 DEBUG_LOCKS_WARN_ON(list_empty(&waiter->list));
87393- DEBUG_LOCKS_WARN_ON(waiter->task != ti->task);
87394- DEBUG_LOCKS_WARN_ON(ti->task->blocked_on != waiter);
87395- ti->task->blocked_on = NULL;
87396+ DEBUG_LOCKS_WARN_ON(waiter->task != task);
87397+ DEBUG_LOCKS_WARN_ON(task->blocked_on != waiter);
87398+ task->blocked_on = NULL;
87399
87400 list_del_init(&waiter->list);
87401 waiter->task = NULL;
87402diff --git a/kernel/locking/mutex-debug.h b/kernel/locking/mutex-debug.h
87403index 0799fd3..d06ae3b 100644
87404--- a/kernel/locking/mutex-debug.h
87405+++ b/kernel/locking/mutex-debug.h
87406@@ -20,9 +20,9 @@ extern void debug_mutex_wake_waiter(struct mutex *lock,
87407 extern void debug_mutex_free_waiter(struct mutex_waiter *waiter);
87408 extern void debug_mutex_add_waiter(struct mutex *lock,
87409 struct mutex_waiter *waiter,
87410- struct thread_info *ti);
87411+ struct task_struct *task);
87412 extern void mutex_remove_waiter(struct mutex *lock, struct mutex_waiter *waiter,
87413- struct thread_info *ti);
87414+ struct task_struct *task);
87415 extern void debug_mutex_unlock(struct mutex *lock);
87416 extern void debug_mutex_init(struct mutex *lock, const char *name,
87417 struct lock_class_key *key);
87418diff --git a/kernel/locking/mutex.c b/kernel/locking/mutex.c
87419index bc73d33..6f308aa 100644
87420--- a/kernel/locking/mutex.c
87421+++ b/kernel/locking/mutex.c
87422@@ -490,7 +490,7 @@ slowpath:
87423 goto skip_wait;
87424
87425 debug_mutex_lock_common(lock, &waiter);
87426- debug_mutex_add_waiter(lock, &waiter, task_thread_info(task));
87427+ debug_mutex_add_waiter(lock, &waiter, task);
87428
87429 /* add waiting tasks to the end of the waitqueue (FIFO): */
87430 list_add_tail(&waiter.list, &lock->wait_list);
87431@@ -534,7 +534,7 @@ slowpath:
87432 schedule_preempt_disabled();
87433 spin_lock_mutex(&lock->wait_lock, flags);
87434 }
87435- mutex_remove_waiter(lock, &waiter, current_thread_info());
87436+ mutex_remove_waiter(lock, &waiter, task);
87437 /* set it to 0 if there are no waiters left: */
87438 if (likely(list_empty(&lock->wait_list)))
87439 atomic_set(&lock->count, 0);
87440@@ -571,7 +571,7 @@ skip_wait:
87441 return 0;
87442
87443 err:
87444- mutex_remove_waiter(lock, &waiter, task_thread_info(task));
87445+ mutex_remove_waiter(lock, &waiter, task);
87446 spin_unlock_mutex(&lock->wait_lock, flags);
87447 debug_mutex_free_waiter(&waiter);
87448 mutex_release(&lock->dep_map, 1, ip);
87449diff --git a/kernel/locking/rtmutex-tester.c b/kernel/locking/rtmutex-tester.c
87450index 1d96dd0..994ff19 100644
87451--- a/kernel/locking/rtmutex-tester.c
87452+++ b/kernel/locking/rtmutex-tester.c
87453@@ -22,7 +22,7 @@
87454 #define MAX_RT_TEST_MUTEXES 8
87455
87456 static spinlock_t rttest_lock;
87457-static atomic_t rttest_event;
87458+static atomic_unchecked_t rttest_event;
87459
87460 struct test_thread_data {
87461 int opcode;
87462@@ -63,7 +63,7 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
87463
87464 case RTTEST_LOCKCONT:
87465 td->mutexes[td->opdata] = 1;
87466- td->event = atomic_add_return(1, &rttest_event);
87467+ td->event = atomic_add_return_unchecked(1, &rttest_event);
87468 return 0;
87469
87470 case RTTEST_RESET:
87471@@ -76,7 +76,7 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
87472 return 0;
87473
87474 case RTTEST_RESETEVENT:
87475- atomic_set(&rttest_event, 0);
87476+ atomic_set_unchecked(&rttest_event, 0);
87477 return 0;
87478
87479 default:
87480@@ -93,9 +93,9 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
87481 return ret;
87482
87483 td->mutexes[id] = 1;
87484- td->event = atomic_add_return(1, &rttest_event);
87485+ td->event = atomic_add_return_unchecked(1, &rttest_event);
87486 rt_mutex_lock(&mutexes[id]);
87487- td->event = atomic_add_return(1, &rttest_event);
87488+ td->event = atomic_add_return_unchecked(1, &rttest_event);
87489 td->mutexes[id] = 4;
87490 return 0;
87491
87492@@ -106,9 +106,9 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
87493 return ret;
87494
87495 td->mutexes[id] = 1;
87496- td->event = atomic_add_return(1, &rttest_event);
87497+ td->event = atomic_add_return_unchecked(1, &rttest_event);
87498 ret = rt_mutex_lock_interruptible(&mutexes[id], 0);
87499- td->event = atomic_add_return(1, &rttest_event);
87500+ td->event = atomic_add_return_unchecked(1, &rttest_event);
87501 td->mutexes[id] = ret ? 0 : 4;
87502 return ret ? -EINTR : 0;
87503
87504@@ -117,9 +117,9 @@ static int handle_op(struct test_thread_data *td, int lockwakeup)
87505 if (id < 0 || id >= MAX_RT_TEST_MUTEXES || td->mutexes[id] != 4)
87506 return ret;
87507
87508- td->event = atomic_add_return(1, &rttest_event);
87509+ td->event = atomic_add_return_unchecked(1, &rttest_event);
87510 rt_mutex_unlock(&mutexes[id]);
87511- td->event = atomic_add_return(1, &rttest_event);
87512+ td->event = atomic_add_return_unchecked(1, &rttest_event);
87513 td->mutexes[id] = 0;
87514 return 0;
87515
87516@@ -166,7 +166,7 @@ void schedule_rt_mutex_test(struct rt_mutex *mutex)
87517 break;
87518
87519 td->mutexes[dat] = 2;
87520- td->event = atomic_add_return(1, &rttest_event);
87521+ td->event = atomic_add_return_unchecked(1, &rttest_event);
87522 break;
87523
87524 default:
87525@@ -186,7 +186,7 @@ void schedule_rt_mutex_test(struct rt_mutex *mutex)
87526 return;
87527
87528 td->mutexes[dat] = 3;
87529- td->event = atomic_add_return(1, &rttest_event);
87530+ td->event = atomic_add_return_unchecked(1, &rttest_event);
87531 break;
87532
87533 case RTTEST_LOCKNOWAIT:
87534@@ -198,7 +198,7 @@ void schedule_rt_mutex_test(struct rt_mutex *mutex)
87535 return;
87536
87537 td->mutexes[dat] = 1;
87538- td->event = atomic_add_return(1, &rttest_event);
87539+ td->event = atomic_add_return_unchecked(1, &rttest_event);
87540 return;
87541
87542 default:
87543diff --git a/kernel/module.c b/kernel/module.c
87544index 079c461..741f79c 100644
87545--- a/kernel/module.c
87546+++ b/kernel/module.c
87547@@ -61,6 +61,7 @@
87548 #include <linux/pfn.h>
87549 #include <linux/bsearch.h>
87550 #include <linux/fips.h>
87551+#include <linux/grsecurity.h>
87552 #include <uapi/linux/module.h>
87553 #include "module-internal.h"
87554
87555@@ -157,7 +158,8 @@ static BLOCKING_NOTIFIER_HEAD(module_notify_list);
87556
87557 /* Bounds of module allocation, for speeding __module_address.
87558 * Protected by module_mutex. */
87559-static unsigned long module_addr_min = -1UL, module_addr_max = 0;
87560+static unsigned long module_addr_min_rw = -1UL, module_addr_max_rw = 0;
87561+static unsigned long module_addr_min_rx = -1UL, module_addr_max_rx = 0;
87562
87563 int register_module_notifier(struct notifier_block * nb)
87564 {
87565@@ -324,7 +326,7 @@ bool each_symbol_section(bool (*fn)(const struct symsearch *arr,
87566 return true;
87567
87568 list_for_each_entry_rcu(mod, &modules, list) {
87569- struct symsearch arr[] = {
87570+ struct symsearch modarr[] = {
87571 { mod->syms, mod->syms + mod->num_syms, mod->crcs,
87572 NOT_GPL_ONLY, false },
87573 { mod->gpl_syms, mod->gpl_syms + mod->num_gpl_syms,
87574@@ -349,7 +351,7 @@ bool each_symbol_section(bool (*fn)(const struct symsearch *arr,
87575 if (mod->state == MODULE_STATE_UNFORMED)
87576 continue;
87577
87578- if (each_symbol_in_section(arr, ARRAY_SIZE(arr), mod, fn, data))
87579+ if (each_symbol_in_section(modarr, ARRAY_SIZE(modarr), mod, fn, data))
87580 return true;
87581 }
87582 return false;
87583@@ -489,7 +491,7 @@ static int percpu_modalloc(struct module *mod, struct load_info *info)
87584 if (!pcpusec->sh_size)
87585 return 0;
87586
87587- if (align > PAGE_SIZE) {
87588+ if (align-1 >= PAGE_SIZE) {
87589 pr_warn("%s: per-cpu alignment %li > %li\n",
87590 mod->name, align, PAGE_SIZE);
87591 align = PAGE_SIZE;
87592@@ -1061,7 +1063,7 @@ struct module_attribute module_uevent =
87593 static ssize_t show_coresize(struct module_attribute *mattr,
87594 struct module_kobject *mk, char *buffer)
87595 {
87596- return sprintf(buffer, "%u\n", mk->mod->core_size);
87597+ return sprintf(buffer, "%u\n", mk->mod->core_size_rx + mk->mod->core_size_rw);
87598 }
87599
87600 static struct module_attribute modinfo_coresize =
87601@@ -1070,7 +1072,7 @@ static struct module_attribute modinfo_coresize =
87602 static ssize_t show_initsize(struct module_attribute *mattr,
87603 struct module_kobject *mk, char *buffer)
87604 {
87605- return sprintf(buffer, "%u\n", mk->mod->init_size);
87606+ return sprintf(buffer, "%u\n", mk->mod->init_size_rx + mk->mod->init_size_rw);
87607 }
87608
87609 static struct module_attribute modinfo_initsize =
87610@@ -1162,12 +1164,29 @@ static int check_version(Elf_Shdr *sechdrs,
87611 goto bad_version;
87612 }
87613
87614+#ifdef CONFIG_GRKERNSEC_RANDSTRUCT
87615+ /*
87616+ * avoid potentially printing jibberish on attempted load
87617+ * of a module randomized with a different seed
87618+ */
87619+ pr_warn("no symbol version for %s\n", symname);
87620+#else
87621 pr_warn("%s: no symbol version for %s\n", mod->name, symname);
87622+#endif
87623 return 0;
87624
87625 bad_version:
87626+#ifdef CONFIG_GRKERNSEC_RANDSTRUCT
87627+ /*
87628+ * avoid potentially printing jibberish on attempted load
87629+ * of a module randomized with a different seed
87630+ */
87631+ printk("attempted module disagrees about version of symbol %s\n",
87632+ symname);
87633+#else
87634 printk("%s: disagrees about version of symbol %s\n",
87635 mod->name, symname);
87636+#endif
87637 return 0;
87638 }
87639
87640@@ -1283,7 +1302,7 @@ resolve_symbol_wait(struct module *mod,
87641 */
87642 #ifdef CONFIG_SYSFS
87643
87644-#ifdef CONFIG_KALLSYMS
87645+#if defined(CONFIG_KALLSYMS) && !defined(CONFIG_GRKERNSEC_HIDESYM)
87646 static inline bool sect_empty(const Elf_Shdr *sect)
87647 {
87648 return !(sect->sh_flags & SHF_ALLOC) || sect->sh_size == 0;
87649@@ -1423,7 +1442,7 @@ static void add_notes_attrs(struct module *mod, const struct load_info *info)
87650 {
87651 unsigned int notes, loaded, i;
87652 struct module_notes_attrs *notes_attrs;
87653- struct bin_attribute *nattr;
87654+ bin_attribute_no_const *nattr;
87655
87656 /* failed to create section attributes, so can't create notes */
87657 if (!mod->sect_attrs)
87658@@ -1535,7 +1554,7 @@ static void del_usage_links(struct module *mod)
87659 static int module_add_modinfo_attrs(struct module *mod)
87660 {
87661 struct module_attribute *attr;
87662- struct module_attribute *temp_attr;
87663+ module_attribute_no_const *temp_attr;
87664 int error = 0;
87665 int i;
87666
87667@@ -1756,21 +1775,21 @@ static void set_section_ro_nx(void *base,
87668
87669 static void unset_module_core_ro_nx(struct module *mod)
87670 {
87671- set_page_attributes(mod->module_core + mod->core_text_size,
87672- mod->module_core + mod->core_size,
87673+ set_page_attributes(mod->module_core_rw,
87674+ mod->module_core_rw + mod->core_size_rw,
87675 set_memory_x);
87676- set_page_attributes(mod->module_core,
87677- mod->module_core + mod->core_ro_size,
87678+ set_page_attributes(mod->module_core_rx,
87679+ mod->module_core_rx + mod->core_size_rx,
87680 set_memory_rw);
87681 }
87682
87683 static void unset_module_init_ro_nx(struct module *mod)
87684 {
87685- set_page_attributes(mod->module_init + mod->init_text_size,
87686- mod->module_init + mod->init_size,
87687+ set_page_attributes(mod->module_init_rw,
87688+ mod->module_init_rw + mod->init_size_rw,
87689 set_memory_x);
87690- set_page_attributes(mod->module_init,
87691- mod->module_init + mod->init_ro_size,
87692+ set_page_attributes(mod->module_init_rx,
87693+ mod->module_init_rx + mod->init_size_rx,
87694 set_memory_rw);
87695 }
87696
87697@@ -1783,14 +1802,14 @@ void set_all_modules_text_rw(void)
87698 list_for_each_entry_rcu(mod, &modules, list) {
87699 if (mod->state == MODULE_STATE_UNFORMED)
87700 continue;
87701- if ((mod->module_core) && (mod->core_text_size)) {
87702- set_page_attributes(mod->module_core,
87703- mod->module_core + mod->core_text_size,
87704+ if ((mod->module_core_rx) && (mod->core_size_rx)) {
87705+ set_page_attributes(mod->module_core_rx,
87706+ mod->module_core_rx + mod->core_size_rx,
87707 set_memory_rw);
87708 }
87709- if ((mod->module_init) && (mod->init_text_size)) {
87710- set_page_attributes(mod->module_init,
87711- mod->module_init + mod->init_text_size,
87712+ if ((mod->module_init_rx) && (mod->init_size_rx)) {
87713+ set_page_attributes(mod->module_init_rx,
87714+ mod->module_init_rx + mod->init_size_rx,
87715 set_memory_rw);
87716 }
87717 }
87718@@ -1806,14 +1825,14 @@ void set_all_modules_text_ro(void)
87719 list_for_each_entry_rcu(mod, &modules, list) {
87720 if (mod->state == MODULE_STATE_UNFORMED)
87721 continue;
87722- if ((mod->module_core) && (mod->core_text_size)) {
87723- set_page_attributes(mod->module_core,
87724- mod->module_core + mod->core_text_size,
87725+ if ((mod->module_core_rx) && (mod->core_size_rx)) {
87726+ set_page_attributes(mod->module_core_rx,
87727+ mod->module_core_rx + mod->core_size_rx,
87728 set_memory_ro);
87729 }
87730- if ((mod->module_init) && (mod->init_text_size)) {
87731- set_page_attributes(mod->module_init,
87732- mod->module_init + mod->init_text_size,
87733+ if ((mod->module_init_rx) && (mod->init_size_rx)) {
87734+ set_page_attributes(mod->module_init_rx,
87735+ mod->module_init_rx + mod->init_size_rx,
87736 set_memory_ro);
87737 }
87738 }
87739@@ -1864,16 +1883,19 @@ static void free_module(struct module *mod)
87740
87741 /* This may be NULL, but that's OK */
87742 unset_module_init_ro_nx(mod);
87743- module_free(mod, mod->module_init);
87744+ module_free(mod, mod->module_init_rw);
87745+ module_free_exec(mod, mod->module_init_rx);
87746 kfree(mod->args);
87747 percpu_modfree(mod);
87748
87749 /* Free lock-classes: */
87750- lockdep_free_key_range(mod->module_core, mod->core_size);
87751+ lockdep_free_key_range(mod->module_core_rx, mod->core_size_rx);
87752+ lockdep_free_key_range(mod->module_core_rw, mod->core_size_rw);
87753
87754 /* Finally, free the core (containing the module structure) */
87755 unset_module_core_ro_nx(mod);
87756- module_free(mod, mod->module_core);
87757+ module_free_exec(mod, mod->module_core_rx);
87758+ module_free(mod, mod->module_core_rw);
87759
87760 #ifdef CONFIG_MPU
87761 update_protections(current->mm);
87762@@ -1942,9 +1964,31 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
87763 int ret = 0;
87764 const struct kernel_symbol *ksym;
87765
87766+#ifdef CONFIG_GRKERNSEC_MODHARDEN
87767+ int is_fs_load = 0;
87768+ int register_filesystem_found = 0;
87769+ char *p;
87770+
87771+ p = strstr(mod->args, "grsec_modharden_fs");
87772+ if (p) {
87773+ char *endptr = p + sizeof("grsec_modharden_fs") - 1;
87774+ /* copy \0 as well */
87775+ memmove(p, endptr, strlen(mod->args) - (unsigned int)(endptr - mod->args) + 1);
87776+ is_fs_load = 1;
87777+ }
87778+#endif
87779+
87780 for (i = 1; i < symsec->sh_size / sizeof(Elf_Sym); i++) {
87781 const char *name = info->strtab + sym[i].st_name;
87782
87783+#ifdef CONFIG_GRKERNSEC_MODHARDEN
87784+ /* it's a real shame this will never get ripped and copied
87785+ upstream! ;(
87786+ */
87787+ if (is_fs_load && !strcmp(name, "register_filesystem"))
87788+ register_filesystem_found = 1;
87789+#endif
87790+
87791 switch (sym[i].st_shndx) {
87792 case SHN_COMMON:
87793 /* Ignore common symbols */
87794@@ -1969,7 +2013,9 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
87795 ksym = resolve_symbol_wait(mod, info, name);
87796 /* Ok if resolved. */
87797 if (ksym && !IS_ERR(ksym)) {
87798+ pax_open_kernel();
87799 sym[i].st_value = ksym->value;
87800+ pax_close_kernel();
87801 break;
87802 }
87803
87804@@ -1988,11 +2034,20 @@ static int simplify_symbols(struct module *mod, const struct load_info *info)
87805 secbase = (unsigned long)mod_percpu(mod);
87806 else
87807 secbase = info->sechdrs[sym[i].st_shndx].sh_addr;
87808+ pax_open_kernel();
87809 sym[i].st_value += secbase;
87810+ pax_close_kernel();
87811 break;
87812 }
87813 }
87814
87815+#ifdef CONFIG_GRKERNSEC_MODHARDEN
87816+ if (is_fs_load && !register_filesystem_found) {
87817+ printk(KERN_ALERT "grsec: Denied attempt to load non-fs module %.64s through mount\n", mod->name);
87818+ ret = -EPERM;
87819+ }
87820+#endif
87821+
87822 return ret;
87823 }
87824
87825@@ -2076,22 +2131,12 @@ static void layout_sections(struct module *mod, struct load_info *info)
87826 || s->sh_entsize != ~0UL
87827 || strstarts(sname, ".init"))
87828 continue;
87829- s->sh_entsize = get_offset(mod, &mod->core_size, s, i);
87830+ if ((s->sh_flags & SHF_WRITE) || !(s->sh_flags & SHF_ALLOC))
87831+ s->sh_entsize = get_offset(mod, &mod->core_size_rw, s, i);
87832+ else
87833+ s->sh_entsize = get_offset(mod, &mod->core_size_rx, s, i);
87834 pr_debug("\t%s\n", sname);
87835 }
87836- switch (m) {
87837- case 0: /* executable */
87838- mod->core_size = debug_align(mod->core_size);
87839- mod->core_text_size = mod->core_size;
87840- break;
87841- case 1: /* RO: text and ro-data */
87842- mod->core_size = debug_align(mod->core_size);
87843- mod->core_ro_size = mod->core_size;
87844- break;
87845- case 3: /* whole core */
87846- mod->core_size = debug_align(mod->core_size);
87847- break;
87848- }
87849 }
87850
87851 pr_debug("Init section allocation order:\n");
87852@@ -2105,23 +2150,13 @@ static void layout_sections(struct module *mod, struct load_info *info)
87853 || s->sh_entsize != ~0UL
87854 || !strstarts(sname, ".init"))
87855 continue;
87856- s->sh_entsize = (get_offset(mod, &mod->init_size, s, i)
87857- | INIT_OFFSET_MASK);
87858+ if ((s->sh_flags & SHF_WRITE) || !(s->sh_flags & SHF_ALLOC))
87859+ s->sh_entsize = get_offset(mod, &mod->init_size_rw, s, i);
87860+ else
87861+ s->sh_entsize = get_offset(mod, &mod->init_size_rx, s, i);
87862+ s->sh_entsize |= INIT_OFFSET_MASK;
87863 pr_debug("\t%s\n", sname);
87864 }
87865- switch (m) {
87866- case 0: /* executable */
87867- mod->init_size = debug_align(mod->init_size);
87868- mod->init_text_size = mod->init_size;
87869- break;
87870- case 1: /* RO: text and ro-data */
87871- mod->init_size = debug_align(mod->init_size);
87872- mod->init_ro_size = mod->init_size;
87873- break;
87874- case 3: /* whole init */
87875- mod->init_size = debug_align(mod->init_size);
87876- break;
87877- }
87878 }
87879 }
87880
87881@@ -2294,7 +2329,7 @@ static void layout_symtab(struct module *mod, struct load_info *info)
87882
87883 /* Put symbol section at end of init part of module. */
87884 symsect->sh_flags |= SHF_ALLOC;
87885- symsect->sh_entsize = get_offset(mod, &mod->init_size, symsect,
87886+ symsect->sh_entsize = get_offset(mod, &mod->init_size_rx, symsect,
87887 info->index.sym) | INIT_OFFSET_MASK;
87888 pr_debug("\t%s\n", info->secstrings + symsect->sh_name);
87889
87890@@ -2311,13 +2346,13 @@ static void layout_symtab(struct module *mod, struct load_info *info)
87891 }
87892
87893 /* Append room for core symbols at end of core part. */
87894- info->symoffs = ALIGN(mod->core_size, symsect->sh_addralign ?: 1);
87895- info->stroffs = mod->core_size = info->symoffs + ndst * sizeof(Elf_Sym);
87896- mod->core_size += strtab_size;
87897+ info->symoffs = ALIGN(mod->core_size_rx, symsect->sh_addralign ?: 1);
87898+ info->stroffs = mod->core_size_rx = info->symoffs + ndst * sizeof(Elf_Sym);
87899+ mod->core_size_rx += strtab_size;
87900
87901 /* Put string table section at end of init part of module. */
87902 strsect->sh_flags |= SHF_ALLOC;
87903- strsect->sh_entsize = get_offset(mod, &mod->init_size, strsect,
87904+ strsect->sh_entsize = get_offset(mod, &mod->init_size_rx, strsect,
87905 info->index.str) | INIT_OFFSET_MASK;
87906 pr_debug("\t%s\n", info->secstrings + strsect->sh_name);
87907 }
87908@@ -2335,12 +2370,14 @@ static void add_kallsyms(struct module *mod, const struct load_info *info)
87909 /* Make sure we get permanent strtab: don't use info->strtab. */
87910 mod->strtab = (void *)info->sechdrs[info->index.str].sh_addr;
87911
87912+ pax_open_kernel();
87913+
87914 /* Set types up while we still have access to sections. */
87915 for (i = 0; i < mod->num_symtab; i++)
87916 mod->symtab[i].st_info = elf_type(&mod->symtab[i], info);
87917
87918- mod->core_symtab = dst = mod->module_core + info->symoffs;
87919- mod->core_strtab = s = mod->module_core + info->stroffs;
87920+ mod->core_symtab = dst = mod->module_core_rx + info->symoffs;
87921+ mod->core_strtab = s = mod->module_core_rx + info->stroffs;
87922 src = mod->symtab;
87923 for (ndst = i = 0; i < mod->num_symtab; i++) {
87924 if (i == 0 ||
87925@@ -2352,6 +2389,8 @@ static void add_kallsyms(struct module *mod, const struct load_info *info)
87926 }
87927 }
87928 mod->core_num_syms = ndst;
87929+
87930+ pax_close_kernel();
87931 }
87932 #else
87933 static inline void layout_symtab(struct module *mod, struct load_info *info)
87934@@ -2385,17 +2424,33 @@ void * __weak module_alloc(unsigned long size)
87935 return vmalloc_exec(size);
87936 }
87937
87938-static void *module_alloc_update_bounds(unsigned long size)
87939+static void *module_alloc_update_bounds_rw(unsigned long size)
87940 {
87941 void *ret = module_alloc(size);
87942
87943 if (ret) {
87944 mutex_lock(&module_mutex);
87945 /* Update module bounds. */
87946- if ((unsigned long)ret < module_addr_min)
87947- module_addr_min = (unsigned long)ret;
87948- if ((unsigned long)ret + size > module_addr_max)
87949- module_addr_max = (unsigned long)ret + size;
87950+ if ((unsigned long)ret < module_addr_min_rw)
87951+ module_addr_min_rw = (unsigned long)ret;
87952+ if ((unsigned long)ret + size > module_addr_max_rw)
87953+ module_addr_max_rw = (unsigned long)ret + size;
87954+ mutex_unlock(&module_mutex);
87955+ }
87956+ return ret;
87957+}
87958+
87959+static void *module_alloc_update_bounds_rx(unsigned long size)
87960+{
87961+ void *ret = module_alloc_exec(size);
87962+
87963+ if (ret) {
87964+ mutex_lock(&module_mutex);
87965+ /* Update module bounds. */
87966+ if ((unsigned long)ret < module_addr_min_rx)
87967+ module_addr_min_rx = (unsigned long)ret;
87968+ if ((unsigned long)ret + size > module_addr_max_rx)
87969+ module_addr_max_rx = (unsigned long)ret + size;
87970 mutex_unlock(&module_mutex);
87971 }
87972 return ret;
87973@@ -2652,7 +2707,15 @@ static struct module *setup_load_info(struct load_info *info, int flags)
87974 mod = (void *)info->sechdrs[info->index.mod].sh_addr;
87975
87976 if (info->index.sym == 0) {
87977+#ifdef CONFIG_GRKERNSEC_RANDSTRUCT
87978+ /*
87979+ * avoid potentially printing jibberish on attempted load
87980+ * of a module randomized with a different seed
87981+ */
87982+ pr_warn("module has no symbols (stripped?)\n");
87983+#else
87984 pr_warn("%s: module has no symbols (stripped?)\n", mod->name);
87985+#endif
87986 return ERR_PTR(-ENOEXEC);
87987 }
87988
87989@@ -2668,8 +2731,14 @@ static struct module *setup_load_info(struct load_info *info, int flags)
87990 static int check_modinfo(struct module *mod, struct load_info *info, int flags)
87991 {
87992 const char *modmagic = get_modinfo(info, "vermagic");
87993+ const char *license = get_modinfo(info, "license");
87994 int err;
87995
87996+#ifdef CONFIG_PAX_KERNEXEC_PLUGIN_METHOD_OR
87997+ if (!license || !license_is_gpl_compatible(license))
87998+ return -ENOEXEC;
87999+#endif
88000+
88001 if (flags & MODULE_INIT_IGNORE_VERMAGIC)
88002 modmagic = NULL;
88003
88004@@ -2694,7 +2763,7 @@ static int check_modinfo(struct module *mod, struct load_info *info, int flags)
88005 }
88006
88007 /* Set up license info based on the info section */
88008- set_license(mod, get_modinfo(info, "license"));
88009+ set_license(mod, license);
88010
88011 return 0;
88012 }
88013@@ -2788,7 +2857,7 @@ static int move_module(struct module *mod, struct load_info *info)
88014 void *ptr;
88015
88016 /* Do the allocs. */
88017- ptr = module_alloc_update_bounds(mod->core_size);
88018+ ptr = module_alloc_update_bounds_rw(mod->core_size_rw);
88019 /*
88020 * The pointer to this block is stored in the module structure
88021 * which is inside the block. Just mark it as not being a
88022@@ -2798,11 +2867,11 @@ static int move_module(struct module *mod, struct load_info *info)
88023 if (!ptr)
88024 return -ENOMEM;
88025
88026- memset(ptr, 0, mod->core_size);
88027- mod->module_core = ptr;
88028+ memset(ptr, 0, mod->core_size_rw);
88029+ mod->module_core_rw = ptr;
88030
88031- if (mod->init_size) {
88032- ptr = module_alloc_update_bounds(mod->init_size);
88033+ if (mod->init_size_rw) {
88034+ ptr = module_alloc_update_bounds_rw(mod->init_size_rw);
88035 /*
88036 * The pointer to this block is stored in the module structure
88037 * which is inside the block. This block doesn't need to be
88038@@ -2811,13 +2880,45 @@ static int move_module(struct module *mod, struct load_info *info)
88039 */
88040 kmemleak_ignore(ptr);
88041 if (!ptr) {
88042- module_free(mod, mod->module_core);
88043+ module_free(mod, mod->module_core_rw);
88044 return -ENOMEM;
88045 }
88046- memset(ptr, 0, mod->init_size);
88047- mod->module_init = ptr;
88048+ memset(ptr, 0, mod->init_size_rw);
88049+ mod->module_init_rw = ptr;
88050 } else
88051- mod->module_init = NULL;
88052+ mod->module_init_rw = NULL;
88053+
88054+ ptr = module_alloc_update_bounds_rx(mod->core_size_rx);
88055+ kmemleak_not_leak(ptr);
88056+ if (!ptr) {
88057+ if (mod->module_init_rw)
88058+ module_free(mod, mod->module_init_rw);
88059+ module_free(mod, mod->module_core_rw);
88060+ return -ENOMEM;
88061+ }
88062+
88063+ pax_open_kernel();
88064+ memset(ptr, 0, mod->core_size_rx);
88065+ pax_close_kernel();
88066+ mod->module_core_rx = ptr;
88067+
88068+ if (mod->init_size_rx) {
88069+ ptr = module_alloc_update_bounds_rx(mod->init_size_rx);
88070+ kmemleak_ignore(ptr);
88071+ if (!ptr && mod->init_size_rx) {
88072+ module_free_exec(mod, mod->module_core_rx);
88073+ if (mod->module_init_rw)
88074+ module_free(mod, mod->module_init_rw);
88075+ module_free(mod, mod->module_core_rw);
88076+ return -ENOMEM;
88077+ }
88078+
88079+ pax_open_kernel();
88080+ memset(ptr, 0, mod->init_size_rx);
88081+ pax_close_kernel();
88082+ mod->module_init_rx = ptr;
88083+ } else
88084+ mod->module_init_rx = NULL;
88085
88086 /* Transfer each section which specifies SHF_ALLOC */
88087 pr_debug("final section addresses:\n");
88088@@ -2828,16 +2929,45 @@ static int move_module(struct module *mod, struct load_info *info)
88089 if (!(shdr->sh_flags & SHF_ALLOC))
88090 continue;
88091
88092- if (shdr->sh_entsize & INIT_OFFSET_MASK)
88093- dest = mod->module_init
88094- + (shdr->sh_entsize & ~INIT_OFFSET_MASK);
88095- else
88096- dest = mod->module_core + shdr->sh_entsize;
88097+ if (shdr->sh_entsize & INIT_OFFSET_MASK) {
88098+ if ((shdr->sh_flags & SHF_WRITE) || !(shdr->sh_flags & SHF_ALLOC))
88099+ dest = mod->module_init_rw
88100+ + (shdr->sh_entsize & ~INIT_OFFSET_MASK);
88101+ else
88102+ dest = mod->module_init_rx
88103+ + (shdr->sh_entsize & ~INIT_OFFSET_MASK);
88104+ } else {
88105+ if ((shdr->sh_flags & SHF_WRITE) || !(shdr->sh_flags & SHF_ALLOC))
88106+ dest = mod->module_core_rw + shdr->sh_entsize;
88107+ else
88108+ dest = mod->module_core_rx + shdr->sh_entsize;
88109+ }
88110+
88111+ if (shdr->sh_type != SHT_NOBITS) {
88112+
88113+#ifdef CONFIG_PAX_KERNEXEC
88114+#ifdef CONFIG_X86_64
88115+ if ((shdr->sh_flags & SHF_WRITE) && (shdr->sh_flags & SHF_EXECINSTR))
88116+ set_memory_x((unsigned long)dest, (shdr->sh_size + PAGE_SIZE) >> PAGE_SHIFT);
88117+#endif
88118+ if (!(shdr->sh_flags & SHF_WRITE) && (shdr->sh_flags & SHF_ALLOC)) {
88119+ pax_open_kernel();
88120+ memcpy(dest, (void *)shdr->sh_addr, shdr->sh_size);
88121+ pax_close_kernel();
88122+ } else
88123+#endif
88124
88125- if (shdr->sh_type != SHT_NOBITS)
88126 memcpy(dest, (void *)shdr->sh_addr, shdr->sh_size);
88127+ }
88128 /* Update sh_addr to point to copy in image. */
88129- shdr->sh_addr = (unsigned long)dest;
88130+
88131+#ifdef CONFIG_PAX_KERNEXEC
88132+ if (shdr->sh_flags & SHF_EXECINSTR)
88133+ shdr->sh_addr = ktva_ktla((unsigned long)dest);
88134+ else
88135+#endif
88136+
88137+ shdr->sh_addr = (unsigned long)dest;
88138 pr_debug("\t0x%lx %s\n",
88139 (long)shdr->sh_addr, info->secstrings + shdr->sh_name);
88140 }
88141@@ -2894,12 +3024,12 @@ static void flush_module_icache(const struct module *mod)
88142 * Do it before processing of module parameters, so the module
88143 * can provide parameter accessor functions of its own.
88144 */
88145- if (mod->module_init)
88146- flush_icache_range((unsigned long)mod->module_init,
88147- (unsigned long)mod->module_init
88148- + mod->init_size);
88149- flush_icache_range((unsigned long)mod->module_core,
88150- (unsigned long)mod->module_core + mod->core_size);
88151+ if (mod->module_init_rx)
88152+ flush_icache_range((unsigned long)mod->module_init_rx,
88153+ (unsigned long)mod->module_init_rx
88154+ + mod->init_size_rx);
88155+ flush_icache_range((unsigned long)mod->module_core_rx,
88156+ (unsigned long)mod->module_core_rx + mod->core_size_rx);
88157
88158 set_fs(old_fs);
88159 }
88160@@ -2956,8 +3086,10 @@ static struct module *layout_and_allocate(struct load_info *info, int flags)
88161 static void module_deallocate(struct module *mod, struct load_info *info)
88162 {
88163 percpu_modfree(mod);
88164- module_free(mod, mod->module_init);
88165- module_free(mod, mod->module_core);
88166+ module_free_exec(mod, mod->module_init_rx);
88167+ module_free_exec(mod, mod->module_core_rx);
88168+ module_free(mod, mod->module_init_rw);
88169+ module_free(mod, mod->module_core_rw);
88170 }
88171
88172 int __weak module_finalize(const Elf_Ehdr *hdr,
88173@@ -2970,7 +3102,9 @@ int __weak module_finalize(const Elf_Ehdr *hdr,
88174 static int post_relocation(struct module *mod, const struct load_info *info)
88175 {
88176 /* Sort exception table now relocations are done. */
88177+ pax_open_kernel();
88178 sort_extable(mod->extable, mod->extable + mod->num_exentries);
88179+ pax_close_kernel();
88180
88181 /* Copy relocated percpu area over. */
88182 percpu_modcopy(mod, (void *)info->sechdrs[info->index.pcpu].sh_addr,
88183@@ -3024,16 +3158,16 @@ static int do_init_module(struct module *mod)
88184 MODULE_STATE_COMING, mod);
88185
88186 /* Set RO and NX regions for core */
88187- set_section_ro_nx(mod->module_core,
88188- mod->core_text_size,
88189- mod->core_ro_size,
88190- mod->core_size);
88191+ set_section_ro_nx(mod->module_core_rx,
88192+ mod->core_size_rx,
88193+ mod->core_size_rx,
88194+ mod->core_size_rx);
88195
88196 /* Set RO and NX regions for init */
88197- set_section_ro_nx(mod->module_init,
88198- mod->init_text_size,
88199- mod->init_ro_size,
88200- mod->init_size);
88201+ set_section_ro_nx(mod->module_init_rx,
88202+ mod->init_size_rx,
88203+ mod->init_size_rx,
88204+ mod->init_size_rx);
88205
88206 do_mod_ctors(mod);
88207 /* Start the module */
88208@@ -3094,11 +3228,12 @@ static int do_init_module(struct module *mod)
88209 mod->strtab = mod->core_strtab;
88210 #endif
88211 unset_module_init_ro_nx(mod);
88212- module_free(mod, mod->module_init);
88213- mod->module_init = NULL;
88214- mod->init_size = 0;
88215- mod->init_ro_size = 0;
88216- mod->init_text_size = 0;
88217+ module_free(mod, mod->module_init_rw);
88218+ module_free_exec(mod, mod->module_init_rx);
88219+ mod->module_init_rw = NULL;
88220+ mod->module_init_rx = NULL;
88221+ mod->init_size_rw = 0;
88222+ mod->init_size_rx = 0;
88223 mutex_unlock(&module_mutex);
88224 wake_up_all(&module_wq);
88225
88226@@ -3241,9 +3376,38 @@ static int load_module(struct load_info *info, const char __user *uargs,
88227 if (err)
88228 goto free_unload;
88229
88230+ /* Now copy in args */
88231+ mod->args = strndup_user(uargs, ~0UL >> 1);
88232+ if (IS_ERR(mod->args)) {
88233+ err = PTR_ERR(mod->args);
88234+ goto free_unload;
88235+ }
88236+
88237 /* Set up MODINFO_ATTR fields */
88238 setup_modinfo(mod, info);
88239
88240+#ifdef CONFIG_GRKERNSEC_MODHARDEN
88241+ {
88242+ char *p, *p2;
88243+
88244+ if (strstr(mod->args, "grsec_modharden_netdev")) {
88245+ printk(KERN_ALERT "grsec: denied auto-loading kernel module for a network device with CAP_SYS_MODULE (deprecated). Use CAP_NET_ADMIN and alias netdev-%.64s instead.", mod->name);
88246+ err = -EPERM;
88247+ goto free_modinfo;
88248+ } else if ((p = strstr(mod->args, "grsec_modharden_normal"))) {
88249+ p += sizeof("grsec_modharden_normal") - 1;
88250+ p2 = strstr(p, "_");
88251+ if (p2) {
88252+ *p2 = '\0';
88253+ printk(KERN_ALERT "grsec: denied kernel module auto-load of %.64s by uid %.9s\n", mod->name, p);
88254+ *p2 = '_';
88255+ }
88256+ err = -EPERM;
88257+ goto free_modinfo;
88258+ }
88259+ }
88260+#endif
88261+
88262 /* Fix up syms, so that st_value is a pointer to location. */
88263 err = simplify_symbols(mod, info);
88264 if (err < 0)
88265@@ -3259,13 +3423,6 @@ static int load_module(struct load_info *info, const char __user *uargs,
88266
88267 flush_module_icache(mod);
88268
88269- /* Now copy in args */
88270- mod->args = strndup_user(uargs, ~0UL >> 1);
88271- if (IS_ERR(mod->args)) {
88272- err = PTR_ERR(mod->args);
88273- goto free_arch_cleanup;
88274- }
88275-
88276 dynamic_debug_setup(info->debug, info->num_debug);
88277
88278 /* Ftrace init must be called in the MODULE_STATE_UNFORMED state */
88279@@ -3303,11 +3460,10 @@ static int load_module(struct load_info *info, const char __user *uargs,
88280 ddebug_cleanup:
88281 dynamic_debug_remove(info->debug);
88282 synchronize_sched();
88283- kfree(mod->args);
88284- free_arch_cleanup:
88285 module_arch_cleanup(mod);
88286 free_modinfo:
88287 free_modinfo(mod);
88288+ kfree(mod->args);
88289 free_unload:
88290 module_unload_free(mod);
88291 unlink_mod:
88292@@ -3390,10 +3546,16 @@ static const char *get_ksymbol(struct module *mod,
88293 unsigned long nextval;
88294
88295 /* At worse, next value is at end of module */
88296- if (within_module_init(addr, mod))
88297- nextval = (unsigned long)mod->module_init+mod->init_text_size;
88298+ if (within_module_init_rx(addr, mod))
88299+ nextval = (unsigned long)mod->module_init_rx+mod->init_size_rx;
88300+ else if (within_module_init_rw(addr, mod))
88301+ nextval = (unsigned long)mod->module_init_rw+mod->init_size_rw;
88302+ else if (within_module_core_rx(addr, mod))
88303+ nextval = (unsigned long)mod->module_core_rx+mod->core_size_rx;
88304+ else if (within_module_core_rw(addr, mod))
88305+ nextval = (unsigned long)mod->module_core_rw+mod->core_size_rw;
88306 else
88307- nextval = (unsigned long)mod->module_core+mod->core_text_size;
88308+ return NULL;
88309
88310 /* Scan for closest preceding symbol, and next symbol. (ELF
88311 starts real symbols at 1). */
88312@@ -3644,7 +3806,7 @@ static int m_show(struct seq_file *m, void *p)
88313 return 0;
88314
88315 seq_printf(m, "%s %u",
88316- mod->name, mod->init_size + mod->core_size);
88317+ mod->name, mod->init_size_rx + mod->init_size_rw + mod->core_size_rx + mod->core_size_rw);
88318 print_unload_info(m, mod);
88319
88320 /* Informative for users. */
88321@@ -3653,7 +3815,7 @@ static int m_show(struct seq_file *m, void *p)
88322 mod->state == MODULE_STATE_COMING ? "Loading":
88323 "Live");
88324 /* Used by oprofile and other similar tools. */
88325- seq_printf(m, " 0x%pK", mod->module_core);
88326+ seq_printf(m, " 0x%pK 0x%pK", mod->module_core_rx, mod->module_core_rw);
88327
88328 /* Taints info */
88329 if (mod->taints)
88330@@ -3689,7 +3851,17 @@ static const struct file_operations proc_modules_operations = {
88331
88332 static int __init proc_modules_init(void)
88333 {
88334+#ifndef CONFIG_GRKERNSEC_HIDESYM
88335+#ifdef CONFIG_GRKERNSEC_PROC_USER
88336+ proc_create("modules", S_IRUSR, NULL, &proc_modules_operations);
88337+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
88338+ proc_create("modules", S_IRUSR | S_IRGRP, NULL, &proc_modules_operations);
88339+#else
88340 proc_create("modules", 0, NULL, &proc_modules_operations);
88341+#endif
88342+#else
88343+ proc_create("modules", S_IRUSR, NULL, &proc_modules_operations);
88344+#endif
88345 return 0;
88346 }
88347 module_init(proc_modules_init);
88348@@ -3750,14 +3922,14 @@ struct module *__module_address(unsigned long addr)
88349 {
88350 struct module *mod;
88351
88352- if (addr < module_addr_min || addr > module_addr_max)
88353+ if ((addr < module_addr_min_rx || addr > module_addr_max_rx) &&
88354+ (addr < module_addr_min_rw || addr > module_addr_max_rw))
88355 return NULL;
88356
88357 list_for_each_entry_rcu(mod, &modules, list) {
88358 if (mod->state == MODULE_STATE_UNFORMED)
88359 continue;
88360- if (within_module_core(addr, mod)
88361- || within_module_init(addr, mod))
88362+ if (within_module_init(addr, mod) || within_module_core(addr, mod))
88363 return mod;
88364 }
88365 return NULL;
88366@@ -3792,11 +3964,20 @@ bool is_module_text_address(unsigned long addr)
88367 */
88368 struct module *__module_text_address(unsigned long addr)
88369 {
88370- struct module *mod = __module_address(addr);
88371+ struct module *mod;
88372+
88373+#ifdef CONFIG_X86_32
88374+ addr = ktla_ktva(addr);
88375+#endif
88376+
88377+ if (addr < module_addr_min_rx || addr > module_addr_max_rx)
88378+ return NULL;
88379+
88380+ mod = __module_address(addr);
88381+
88382 if (mod) {
88383 /* Make sure it's within the text section. */
88384- if (!within(addr, mod->module_init, mod->init_text_size)
88385- && !within(addr, mod->module_core, mod->core_text_size))
88386+ if (!within_module_init_rx(addr, mod) && !within_module_core_rx(addr, mod))
88387 mod = NULL;
88388 }
88389 return mod;
88390diff --git a/kernel/notifier.c b/kernel/notifier.c
88391index db4c8b0..ad011c5 100644
88392--- a/kernel/notifier.c
88393+++ b/kernel/notifier.c
88394@@ -5,6 +5,7 @@
88395 #include <linux/rcupdate.h>
88396 #include <linux/vmalloc.h>
88397 #include <linux/reboot.h>
88398+#include <linux/mm.h>
88399
88400 /*
88401 * Notifier list for kernel code which wants to be called
88402@@ -24,10 +25,12 @@ static int notifier_chain_register(struct notifier_block **nl,
88403 while ((*nl) != NULL) {
88404 if (n->priority > (*nl)->priority)
88405 break;
88406- nl = &((*nl)->next);
88407+ nl = (struct notifier_block **)&((*nl)->next);
88408 }
88409- n->next = *nl;
88410+ pax_open_kernel();
88411+ *(const void **)&n->next = *nl;
88412 rcu_assign_pointer(*nl, n);
88413+ pax_close_kernel();
88414 return 0;
88415 }
88416
88417@@ -39,10 +42,12 @@ static int notifier_chain_cond_register(struct notifier_block **nl,
88418 return 0;
88419 if (n->priority > (*nl)->priority)
88420 break;
88421- nl = &((*nl)->next);
88422+ nl = (struct notifier_block **)&((*nl)->next);
88423 }
88424- n->next = *nl;
88425+ pax_open_kernel();
88426+ *(const void **)&n->next = *nl;
88427 rcu_assign_pointer(*nl, n);
88428+ pax_close_kernel();
88429 return 0;
88430 }
88431
88432@@ -51,10 +56,12 @@ static int notifier_chain_unregister(struct notifier_block **nl,
88433 {
88434 while ((*nl) != NULL) {
88435 if ((*nl) == n) {
88436+ pax_open_kernel();
88437 rcu_assign_pointer(*nl, n->next);
88438+ pax_close_kernel();
88439 return 0;
88440 }
88441- nl = &((*nl)->next);
88442+ nl = (struct notifier_block **)&((*nl)->next);
88443 }
88444 return -ENOENT;
88445 }
88446diff --git a/kernel/padata.c b/kernel/padata.c
88447index 161402f..598814c 100644
88448--- a/kernel/padata.c
88449+++ b/kernel/padata.c
88450@@ -54,7 +54,7 @@ static int padata_cpu_hash(struct parallel_data *pd)
88451 * seq_nr mod. number of cpus in use.
88452 */
88453
88454- seq_nr = atomic_inc_return(&pd->seq_nr);
88455+ seq_nr = atomic_inc_return_unchecked(&pd->seq_nr);
88456 cpu_index = seq_nr % cpumask_weight(pd->cpumask.pcpu);
88457
88458 return padata_index_to_cpu(pd, cpu_index);
88459@@ -428,7 +428,7 @@ static struct parallel_data *padata_alloc_pd(struct padata_instance *pinst,
88460 padata_init_pqueues(pd);
88461 padata_init_squeues(pd);
88462 setup_timer(&pd->timer, padata_reorder_timer, (unsigned long)pd);
88463- atomic_set(&pd->seq_nr, -1);
88464+ atomic_set_unchecked(&pd->seq_nr, -1);
88465 atomic_set(&pd->reorder_objects, 0);
88466 atomic_set(&pd->refcnt, 0);
88467 pd->pinst = pinst;
88468diff --git a/kernel/panic.c b/kernel/panic.c
88469index d02fa9f..9faec0a 100644
88470--- a/kernel/panic.c
88471+++ b/kernel/panic.c
88472@@ -52,7 +52,7 @@ EXPORT_SYMBOL(panic_blink);
88473 /*
88474 * Stop ourself in panic -- architecture code may override this
88475 */
88476-void __weak panic_smp_self_stop(void)
88477+void __weak __noreturn panic_smp_self_stop(void)
88478 {
88479 while (1)
88480 cpu_relax();
88481@@ -408,7 +408,7 @@ static void warn_slowpath_common(const char *file, int line, void *caller,
88482 disable_trace_on_warning();
88483
88484 pr_warn("------------[ cut here ]------------\n");
88485- pr_warn("WARNING: CPU: %d PID: %d at %s:%d %pS()\n",
88486+ pr_warn("WARNING: CPU: %d PID: %d at %s:%d %pA()\n",
88487 raw_smp_processor_id(), current->pid, file, line, caller);
88488
88489 if (args)
88490@@ -462,7 +462,8 @@ EXPORT_SYMBOL(warn_slowpath_null);
88491 */
88492 __visible void __stack_chk_fail(void)
88493 {
88494- panic("stack-protector: Kernel stack is corrupted in: %p\n",
88495+ dump_stack();
88496+ panic("stack-protector: Kernel stack is corrupted in: %pA\n",
88497 __builtin_return_address(0));
88498 }
88499 EXPORT_SYMBOL(__stack_chk_fail);
88500diff --git a/kernel/pid.c b/kernel/pid.c
88501index 9b9a266..c20ef80 100644
88502--- a/kernel/pid.c
88503+++ b/kernel/pid.c
88504@@ -33,6 +33,7 @@
88505 #include <linux/rculist.h>
88506 #include <linux/bootmem.h>
88507 #include <linux/hash.h>
88508+#include <linux/security.h>
88509 #include <linux/pid_namespace.h>
88510 #include <linux/init_task.h>
88511 #include <linux/syscalls.h>
88512@@ -47,7 +48,7 @@ struct pid init_struct_pid = INIT_STRUCT_PID;
88513
88514 int pid_max = PID_MAX_DEFAULT;
88515
88516-#define RESERVED_PIDS 300
88517+#define RESERVED_PIDS 500
88518
88519 int pid_max_min = RESERVED_PIDS + 1;
88520 int pid_max_max = PID_MAX_LIMIT;
88521@@ -445,10 +446,18 @@ EXPORT_SYMBOL(pid_task);
88522 */
88523 struct task_struct *find_task_by_pid_ns(pid_t nr, struct pid_namespace *ns)
88524 {
88525+ struct task_struct *task;
88526+
88527 rcu_lockdep_assert(rcu_read_lock_held(),
88528 "find_task_by_pid_ns() needs rcu_read_lock()"
88529 " protection");
88530- return pid_task(find_pid_ns(nr, ns), PIDTYPE_PID);
88531+
88532+ task = pid_task(find_pid_ns(nr, ns), PIDTYPE_PID);
88533+
88534+ if (gr_pid_is_chrooted(task))
88535+ return NULL;
88536+
88537+ return task;
88538 }
88539
88540 struct task_struct *find_task_by_vpid(pid_t vnr)
88541@@ -456,6 +465,14 @@ struct task_struct *find_task_by_vpid(pid_t vnr)
88542 return find_task_by_pid_ns(vnr, task_active_pid_ns(current));
88543 }
88544
88545+struct task_struct *find_task_by_vpid_unrestricted(pid_t vnr)
88546+{
88547+ rcu_lockdep_assert(rcu_read_lock_held(),
88548+ "find_task_by_pid_ns() needs rcu_read_lock()"
88549+ " protection");
88550+ return pid_task(find_pid_ns(vnr, task_active_pid_ns(current)), PIDTYPE_PID);
88551+}
88552+
88553 struct pid *get_task_pid(struct task_struct *task, enum pid_type type)
88554 {
88555 struct pid *pid;
88556diff --git a/kernel/pid_namespace.c b/kernel/pid_namespace.c
88557index db95d8e..a0ca23f 100644
88558--- a/kernel/pid_namespace.c
88559+++ b/kernel/pid_namespace.c
88560@@ -253,7 +253,7 @@ static int pid_ns_ctl_handler(struct ctl_table *table, int write,
88561 void __user *buffer, size_t *lenp, loff_t *ppos)
88562 {
88563 struct pid_namespace *pid_ns = task_active_pid_ns(current);
88564- struct ctl_table tmp = *table;
88565+ ctl_table_no_const tmp = *table;
88566
88567 if (write && !ns_capable(pid_ns->user_ns, CAP_SYS_ADMIN))
88568 return -EPERM;
88569diff --git a/kernel/posix-cpu-timers.c b/kernel/posix-cpu-timers.c
88570index 3b89464..5e38379 100644
88571--- a/kernel/posix-cpu-timers.c
88572+++ b/kernel/posix-cpu-timers.c
88573@@ -1464,14 +1464,14 @@ struct k_clock clock_posix_cpu = {
88574
88575 static __init int init_posix_cpu_timers(void)
88576 {
88577- struct k_clock process = {
88578+ static struct k_clock process = {
88579 .clock_getres = process_cpu_clock_getres,
88580 .clock_get = process_cpu_clock_get,
88581 .timer_create = process_cpu_timer_create,
88582 .nsleep = process_cpu_nsleep,
88583 .nsleep_restart = process_cpu_nsleep_restart,
88584 };
88585- struct k_clock thread = {
88586+ static struct k_clock thread = {
88587 .clock_getres = thread_cpu_clock_getres,
88588 .clock_get = thread_cpu_clock_get,
88589 .timer_create = thread_cpu_timer_create,
88590diff --git a/kernel/posix-timers.c b/kernel/posix-timers.c
88591index 424c2d4..679242f 100644
88592--- a/kernel/posix-timers.c
88593+++ b/kernel/posix-timers.c
88594@@ -43,6 +43,7 @@
88595 #include <linux/hash.h>
88596 #include <linux/posix-clock.h>
88597 #include <linux/posix-timers.h>
88598+#include <linux/grsecurity.h>
88599 #include <linux/syscalls.h>
88600 #include <linux/wait.h>
88601 #include <linux/workqueue.h>
88602@@ -122,7 +123,7 @@ static DEFINE_SPINLOCK(hash_lock);
88603 * which we beg off on and pass to do_sys_settimeofday().
88604 */
88605
88606-static struct k_clock posix_clocks[MAX_CLOCKS];
88607+static struct k_clock *posix_clocks[MAX_CLOCKS];
88608
88609 /*
88610 * These ones are defined below.
88611@@ -275,7 +276,7 @@ static int posix_get_tai(clockid_t which_clock, struct timespec *tp)
88612 */
88613 static __init int init_posix_timers(void)
88614 {
88615- struct k_clock clock_realtime = {
88616+ static struct k_clock clock_realtime = {
88617 .clock_getres = hrtimer_get_res,
88618 .clock_get = posix_clock_realtime_get,
88619 .clock_set = posix_clock_realtime_set,
88620@@ -287,7 +288,7 @@ static __init int init_posix_timers(void)
88621 .timer_get = common_timer_get,
88622 .timer_del = common_timer_del,
88623 };
88624- struct k_clock clock_monotonic = {
88625+ static struct k_clock clock_monotonic = {
88626 .clock_getres = hrtimer_get_res,
88627 .clock_get = posix_ktime_get_ts,
88628 .nsleep = common_nsleep,
88629@@ -297,19 +298,19 @@ static __init int init_posix_timers(void)
88630 .timer_get = common_timer_get,
88631 .timer_del = common_timer_del,
88632 };
88633- struct k_clock clock_monotonic_raw = {
88634+ static struct k_clock clock_monotonic_raw = {
88635 .clock_getres = hrtimer_get_res,
88636 .clock_get = posix_get_monotonic_raw,
88637 };
88638- struct k_clock clock_realtime_coarse = {
88639+ static struct k_clock clock_realtime_coarse = {
88640 .clock_getres = posix_get_coarse_res,
88641 .clock_get = posix_get_realtime_coarse,
88642 };
88643- struct k_clock clock_monotonic_coarse = {
88644+ static struct k_clock clock_monotonic_coarse = {
88645 .clock_getres = posix_get_coarse_res,
88646 .clock_get = posix_get_monotonic_coarse,
88647 };
88648- struct k_clock clock_tai = {
88649+ static struct k_clock clock_tai = {
88650 .clock_getres = hrtimer_get_res,
88651 .clock_get = posix_get_tai,
88652 .nsleep = common_nsleep,
88653@@ -319,7 +320,7 @@ static __init int init_posix_timers(void)
88654 .timer_get = common_timer_get,
88655 .timer_del = common_timer_del,
88656 };
88657- struct k_clock clock_boottime = {
88658+ static struct k_clock clock_boottime = {
88659 .clock_getres = hrtimer_get_res,
88660 .clock_get = posix_get_boottime,
88661 .nsleep = common_nsleep,
88662@@ -531,7 +532,7 @@ void posix_timers_register_clock(const clockid_t clock_id,
88663 return;
88664 }
88665
88666- posix_clocks[clock_id] = *new_clock;
88667+ posix_clocks[clock_id] = new_clock;
88668 }
88669 EXPORT_SYMBOL_GPL(posix_timers_register_clock);
88670
88671@@ -577,9 +578,9 @@ static struct k_clock *clockid_to_kclock(const clockid_t id)
88672 return (id & CLOCKFD_MASK) == CLOCKFD ?
88673 &clock_posix_dynamic : &clock_posix_cpu;
88674
88675- if (id >= MAX_CLOCKS || !posix_clocks[id].clock_getres)
88676+ if (id >= MAX_CLOCKS || !posix_clocks[id] || !posix_clocks[id]->clock_getres)
88677 return NULL;
88678- return &posix_clocks[id];
88679+ return posix_clocks[id];
88680 }
88681
88682 static int common_timer_create(struct k_itimer *new_timer)
88683@@ -597,7 +598,7 @@ SYSCALL_DEFINE3(timer_create, const clockid_t, which_clock,
88684 struct k_clock *kc = clockid_to_kclock(which_clock);
88685 struct k_itimer *new_timer;
88686 int error, new_timer_id;
88687- sigevent_t event;
88688+ sigevent_t event = { };
88689 int it_id_set = IT_ID_NOT_SET;
88690
88691 if (!kc)
88692@@ -1011,6 +1012,13 @@ SYSCALL_DEFINE2(clock_settime, const clockid_t, which_clock,
88693 if (copy_from_user(&new_tp, tp, sizeof (*tp)))
88694 return -EFAULT;
88695
88696+ /* only the CLOCK_REALTIME clock can be set, all other clocks
88697+ have their clock_set fptr set to a nosettime dummy function
88698+ CLOCK_REALTIME has a NULL clock_set fptr which causes it to
88699+ call common_clock_set, which calls do_sys_settimeofday, which
88700+ we hook
88701+ */
88702+
88703 return kc->clock_set(which_clock, &new_tp);
88704 }
88705
88706diff --git a/kernel/power/Kconfig b/kernel/power/Kconfig
88707index 2fac9cc..56fef29 100644
88708--- a/kernel/power/Kconfig
88709+++ b/kernel/power/Kconfig
88710@@ -24,6 +24,8 @@ config HIBERNATE_CALLBACKS
88711 config HIBERNATION
88712 bool "Hibernation (aka 'suspend to disk')"
88713 depends on SWAP && ARCH_HIBERNATION_POSSIBLE
88714+ depends on !GRKERNSEC_KMEM
88715+ depends on !PAX_MEMORY_SANITIZE
88716 select HIBERNATE_CALLBACKS
88717 select LZO_COMPRESS
88718 select LZO_DECOMPRESS
88719diff --git a/kernel/power/process.c b/kernel/power/process.c
88720index 06ec886..9dba35e 100644
88721--- a/kernel/power/process.c
88722+++ b/kernel/power/process.c
88723@@ -34,6 +34,7 @@ static int try_to_freeze_tasks(bool user_only)
88724 unsigned int elapsed_msecs;
88725 bool wakeup = false;
88726 int sleep_usecs = USEC_PER_MSEC;
88727+ bool timedout = false;
88728
88729 do_gettimeofday(&start);
88730
88731@@ -44,13 +45,20 @@ static int try_to_freeze_tasks(bool user_only)
88732
88733 while (true) {
88734 todo = 0;
88735+ if (time_after(jiffies, end_time))
88736+ timedout = true;
88737 read_lock(&tasklist_lock);
88738 do_each_thread(g, p) {
88739 if (p == current || !freeze_task(p))
88740 continue;
88741
88742- if (!freezer_should_skip(p))
88743+ if (!freezer_should_skip(p)) {
88744 todo++;
88745+ if (timedout) {
88746+ printk(KERN_ERR "Task refusing to freeze:\n");
88747+ sched_show_task(p);
88748+ }
88749+ }
88750 } while_each_thread(g, p);
88751 read_unlock(&tasklist_lock);
88752
88753@@ -59,7 +67,7 @@ static int try_to_freeze_tasks(bool user_only)
88754 todo += wq_busy;
88755 }
88756
88757- if (!todo || time_after(jiffies, end_time))
88758+ if (!todo || timedout)
88759 break;
88760
88761 if (pm_wakeup_pending()) {
88762diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
88763index 221229c..c76ca0a 100644
88764--- a/kernel/printk/printk.c
88765+++ b/kernel/printk/printk.c
88766@@ -385,6 +385,11 @@ static int check_syslog_permissions(int type, bool from_file)
88767 if (from_file && type != SYSLOG_ACTION_OPEN)
88768 return 0;
88769
88770+#ifdef CONFIG_GRKERNSEC_DMESG
88771+ if (grsec_enable_dmesg && !capable(CAP_SYSLOG) && !capable_nolog(CAP_SYS_ADMIN))
88772+ return -EPERM;
88773+#endif
88774+
88775 if (syslog_action_restricted(type)) {
88776 if (capable(CAP_SYSLOG))
88777 return 0;
88778diff --git a/kernel/profile.c b/kernel/profile.c
88779index cb980f0..ccd8782 100644
88780--- a/kernel/profile.c
88781+++ b/kernel/profile.c
88782@@ -37,7 +37,7 @@ struct profile_hit {
88783 #define NR_PROFILE_HIT (PAGE_SIZE/sizeof(struct profile_hit))
88784 #define NR_PROFILE_GRP (NR_PROFILE_HIT/PROFILE_GRPSZ)
88785
88786-static atomic_t *prof_buffer;
88787+static atomic_unchecked_t *prof_buffer;
88788 static unsigned long prof_len, prof_shift;
88789
88790 int prof_on __read_mostly;
88791@@ -260,7 +260,7 @@ static void profile_flip_buffers(void)
88792 hits[i].pc = 0;
88793 continue;
88794 }
88795- atomic_add(hits[i].hits, &prof_buffer[hits[i].pc]);
88796+ atomic_add_unchecked(hits[i].hits, &prof_buffer[hits[i].pc]);
88797 hits[i].hits = hits[i].pc = 0;
88798 }
88799 }
88800@@ -321,9 +321,9 @@ static void do_profile_hits(int type, void *__pc, unsigned int nr_hits)
88801 * Add the current hit(s) and flush the write-queue out
88802 * to the global buffer:
88803 */
88804- atomic_add(nr_hits, &prof_buffer[pc]);
88805+ atomic_add_unchecked(nr_hits, &prof_buffer[pc]);
88806 for (i = 0; i < NR_PROFILE_HIT; ++i) {
88807- atomic_add(hits[i].hits, &prof_buffer[hits[i].pc]);
88808+ atomic_add_unchecked(hits[i].hits, &prof_buffer[hits[i].pc]);
88809 hits[i].pc = hits[i].hits = 0;
88810 }
88811 out:
88812@@ -398,7 +398,7 @@ static void do_profile_hits(int type, void *__pc, unsigned int nr_hits)
88813 {
88814 unsigned long pc;
88815 pc = ((unsigned long)__pc - (unsigned long)_stext) >> prof_shift;
88816- atomic_add(nr_hits, &prof_buffer[min(pc, prof_len - 1)]);
88817+ atomic_add_unchecked(nr_hits, &prof_buffer[min(pc, prof_len - 1)]);
88818 }
88819 #endif /* !CONFIG_SMP */
88820
88821@@ -494,7 +494,7 @@ read_profile(struct file *file, char __user *buf, size_t count, loff_t *ppos)
88822 return -EFAULT;
88823 buf++; p++; count--; read++;
88824 }
88825- pnt = (char *)prof_buffer + p - sizeof(atomic_t);
88826+ pnt = (char *)prof_buffer + p - sizeof(atomic_unchecked_t);
88827 if (copy_to_user(buf, (void *)pnt, count))
88828 return -EFAULT;
88829 read += count;
88830@@ -525,7 +525,7 @@ static ssize_t write_profile(struct file *file, const char __user *buf,
88831 }
88832 #endif
88833 profile_discard_flip_buffers();
88834- memset(prof_buffer, 0, prof_len * sizeof(atomic_t));
88835+ memset(prof_buffer, 0, prof_len * sizeof(atomic_unchecked_t));
88836 return count;
88837 }
88838
88839diff --git a/kernel/ptrace.c b/kernel/ptrace.c
88840index adf9862..9d86345 100644
88841--- a/kernel/ptrace.c
88842+++ b/kernel/ptrace.c
88843@@ -327,7 +327,7 @@ static int ptrace_attach(struct task_struct *task, long request,
88844 if (seize)
88845 flags |= PT_SEIZED;
88846 rcu_read_lock();
88847- if (ns_capable(__task_cred(task)->user_ns, CAP_SYS_PTRACE))
88848+ if (ns_capable_nolog(__task_cred(task)->user_ns, CAP_SYS_PTRACE))
88849 flags |= PT_PTRACE_CAP;
88850 rcu_read_unlock();
88851 task->ptrace = flags;
88852@@ -538,7 +538,7 @@ int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst
88853 break;
88854 return -EIO;
88855 }
88856- if (copy_to_user(dst, buf, retval))
88857+ if (retval > sizeof(buf) || copy_to_user(dst, buf, retval))
88858 return -EFAULT;
88859 copied += retval;
88860 src += retval;
88861@@ -806,7 +806,7 @@ int ptrace_request(struct task_struct *child, long request,
88862 bool seized = child->ptrace & PT_SEIZED;
88863 int ret = -EIO;
88864 siginfo_t siginfo, *si;
88865- void __user *datavp = (void __user *) data;
88866+ void __user *datavp = (__force void __user *) data;
88867 unsigned long __user *datalp = datavp;
88868 unsigned long flags;
88869
88870@@ -1052,14 +1052,21 @@ SYSCALL_DEFINE4(ptrace, long, request, long, pid, unsigned long, addr,
88871 goto out;
88872 }
88873
88874+ if (gr_handle_ptrace(child, request)) {
88875+ ret = -EPERM;
88876+ goto out_put_task_struct;
88877+ }
88878+
88879 if (request == PTRACE_ATTACH || request == PTRACE_SEIZE) {
88880 ret = ptrace_attach(child, request, addr, data);
88881 /*
88882 * Some architectures need to do book-keeping after
88883 * a ptrace attach.
88884 */
88885- if (!ret)
88886+ if (!ret) {
88887 arch_ptrace_attach(child);
88888+ gr_audit_ptrace(child);
88889+ }
88890 goto out_put_task_struct;
88891 }
88892
88893@@ -1087,7 +1094,7 @@ int generic_ptrace_peekdata(struct task_struct *tsk, unsigned long addr,
88894 copied = access_process_vm(tsk, addr, &tmp, sizeof(tmp), 0);
88895 if (copied != sizeof(tmp))
88896 return -EIO;
88897- return put_user(tmp, (unsigned long __user *)data);
88898+ return put_user(tmp, (__force unsigned long __user *)data);
88899 }
88900
88901 int generic_ptrace_pokedata(struct task_struct *tsk, unsigned long addr,
88902@@ -1181,7 +1188,7 @@ int compat_ptrace_request(struct task_struct *child, compat_long_t request,
88903 }
88904
88905 COMPAT_SYSCALL_DEFINE4(ptrace, compat_long_t, request, compat_long_t, pid,
88906- compat_long_t, addr, compat_long_t, data)
88907+ compat_ulong_t, addr, compat_ulong_t, data)
88908 {
88909 struct task_struct *child;
88910 long ret;
88911@@ -1197,14 +1204,21 @@ COMPAT_SYSCALL_DEFINE4(ptrace, compat_long_t, request, compat_long_t, pid,
88912 goto out;
88913 }
88914
88915+ if (gr_handle_ptrace(child, request)) {
88916+ ret = -EPERM;
88917+ goto out_put_task_struct;
88918+ }
88919+
88920 if (request == PTRACE_ATTACH || request == PTRACE_SEIZE) {
88921 ret = ptrace_attach(child, request, addr, data);
88922 /*
88923 * Some architectures need to do book-keeping after
88924 * a ptrace attach.
88925 */
88926- if (!ret)
88927+ if (!ret) {
88928 arch_ptrace_attach(child);
88929+ gr_audit_ptrace(child);
88930+ }
88931 goto out_put_task_struct;
88932 }
88933
88934diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
88935index bd30bc6..dce23da 100644
88936--- a/kernel/rcu/rcutorture.c
88937+++ b/kernel/rcu/rcutorture.c
88938@@ -122,12 +122,12 @@ static DEFINE_PER_CPU(long [RCU_TORTURE_PIPE_LEN + 1],
88939 rcu_torture_count) = { 0 };
88940 static DEFINE_PER_CPU(long [RCU_TORTURE_PIPE_LEN + 1],
88941 rcu_torture_batch) = { 0 };
88942-static atomic_t rcu_torture_wcount[RCU_TORTURE_PIPE_LEN + 1];
88943-static atomic_t n_rcu_torture_alloc;
88944-static atomic_t n_rcu_torture_alloc_fail;
88945-static atomic_t n_rcu_torture_free;
88946-static atomic_t n_rcu_torture_mberror;
88947-static atomic_t n_rcu_torture_error;
88948+static atomic_unchecked_t rcu_torture_wcount[RCU_TORTURE_PIPE_LEN + 1];
88949+static atomic_unchecked_t n_rcu_torture_alloc;
88950+static atomic_unchecked_t n_rcu_torture_alloc_fail;
88951+static atomic_unchecked_t n_rcu_torture_free;
88952+static atomic_unchecked_t n_rcu_torture_mberror;
88953+static atomic_unchecked_t n_rcu_torture_error;
88954 static long n_rcu_torture_barrier_error;
88955 static long n_rcu_torture_boost_ktrerror;
88956 static long n_rcu_torture_boost_rterror;
88957@@ -186,11 +186,11 @@ rcu_torture_alloc(void)
88958
88959 spin_lock_bh(&rcu_torture_lock);
88960 if (list_empty(&rcu_torture_freelist)) {
88961- atomic_inc(&n_rcu_torture_alloc_fail);
88962+ atomic_inc_unchecked(&n_rcu_torture_alloc_fail);
88963 spin_unlock_bh(&rcu_torture_lock);
88964 return NULL;
88965 }
88966- atomic_inc(&n_rcu_torture_alloc);
88967+ atomic_inc_unchecked(&n_rcu_torture_alloc);
88968 p = rcu_torture_freelist.next;
88969 list_del_init(p);
88970 spin_unlock_bh(&rcu_torture_lock);
88971@@ -203,7 +203,7 @@ rcu_torture_alloc(void)
88972 static void
88973 rcu_torture_free(struct rcu_torture *p)
88974 {
88975- atomic_inc(&n_rcu_torture_free);
88976+ atomic_inc_unchecked(&n_rcu_torture_free);
88977 spin_lock_bh(&rcu_torture_lock);
88978 list_add_tail(&p->rtort_free, &rcu_torture_freelist);
88979 spin_unlock_bh(&rcu_torture_lock);
88980@@ -287,7 +287,7 @@ rcu_torture_cb(struct rcu_head *p)
88981 i = rp->rtort_pipe_count;
88982 if (i > RCU_TORTURE_PIPE_LEN)
88983 i = RCU_TORTURE_PIPE_LEN;
88984- atomic_inc(&rcu_torture_wcount[i]);
88985+ atomic_inc_unchecked(&rcu_torture_wcount[i]);
88986 if (++rp->rtort_pipe_count >= RCU_TORTURE_PIPE_LEN) {
88987 rp->rtort_mbtest = 0;
88988 rcu_torture_free(rp);
88989@@ -714,7 +714,7 @@ rcu_torture_writer(void *arg)
88990 i = old_rp->rtort_pipe_count;
88991 if (i > RCU_TORTURE_PIPE_LEN)
88992 i = RCU_TORTURE_PIPE_LEN;
88993- atomic_inc(&rcu_torture_wcount[i]);
88994+ atomic_inc_unchecked(&rcu_torture_wcount[i]);
88995 old_rp->rtort_pipe_count++;
88996 if (gp_normal == gp_exp)
88997 exp = !!(torture_random(&rand) & 0x80);
88998@@ -732,7 +732,7 @@ rcu_torture_writer(void *arg)
88999 i = rp->rtort_pipe_count;
89000 if (i > RCU_TORTURE_PIPE_LEN)
89001 i = RCU_TORTURE_PIPE_LEN;
89002- atomic_inc(&rcu_torture_wcount[i]);
89003+ atomic_inc_unchecked(&rcu_torture_wcount[i]);
89004 if (++rp->rtort_pipe_count >=
89005 RCU_TORTURE_PIPE_LEN) {
89006 rp->rtort_mbtest = 0;
89007@@ -825,7 +825,7 @@ static void rcu_torture_timer(unsigned long unused)
89008 return;
89009 }
89010 if (p->rtort_mbtest == 0)
89011- atomic_inc(&n_rcu_torture_mberror);
89012+ atomic_inc_unchecked(&n_rcu_torture_mberror);
89013 spin_lock(&rand_lock);
89014 cur_ops->read_delay(&rand);
89015 n_rcu_torture_timers++;
89016@@ -895,7 +895,7 @@ rcu_torture_reader(void *arg)
89017 continue;
89018 }
89019 if (p->rtort_mbtest == 0)
89020- atomic_inc(&n_rcu_torture_mberror);
89021+ atomic_inc_unchecked(&n_rcu_torture_mberror);
89022 cur_ops->read_delay(&rand);
89023 preempt_disable();
89024 pipe_count = p->rtort_pipe_count;
89025@@ -950,15 +950,15 @@ rcu_torture_printk(char *page)
89026 }
89027 page += sprintf(page, "%s%s ", torture_type, TORTURE_FLAG);
89028 page += sprintf(page,
89029- "rtc: %p ver: %lu tfle: %d rta: %d rtaf: %d rtf: %d ",
89030+ "rtc: %pP ver: %lu tfle: %d rta: %d rtaf: %d rtf: %d ",
89031 rcu_torture_current,
89032 rcu_torture_current_version,
89033 list_empty(&rcu_torture_freelist),
89034- atomic_read(&n_rcu_torture_alloc),
89035- atomic_read(&n_rcu_torture_alloc_fail),
89036- atomic_read(&n_rcu_torture_free));
89037+ atomic_read_unchecked(&n_rcu_torture_alloc),
89038+ atomic_read_unchecked(&n_rcu_torture_alloc_fail),
89039+ atomic_read_unchecked(&n_rcu_torture_free));
89040 page += sprintf(page, "rtmbe: %d rtbke: %ld rtbre: %ld ",
89041- atomic_read(&n_rcu_torture_mberror),
89042+ atomic_read_unchecked(&n_rcu_torture_mberror),
89043 n_rcu_torture_boost_ktrerror,
89044 n_rcu_torture_boost_rterror);
89045 page += sprintf(page, "rtbf: %ld rtb: %ld nt: %ld ",
89046@@ -971,14 +971,14 @@ rcu_torture_printk(char *page)
89047 n_barrier_attempts,
89048 n_rcu_torture_barrier_error);
89049 page += sprintf(page, "\n%s%s ", torture_type, TORTURE_FLAG);
89050- if (atomic_read(&n_rcu_torture_mberror) != 0 ||
89051+ if (atomic_read_unchecked(&n_rcu_torture_mberror) != 0 ||
89052 n_rcu_torture_barrier_error != 0 ||
89053 n_rcu_torture_boost_ktrerror != 0 ||
89054 n_rcu_torture_boost_rterror != 0 ||
89055 n_rcu_torture_boost_failure != 0 ||
89056 i > 1) {
89057 page += sprintf(page, "!!! ");
89058- atomic_inc(&n_rcu_torture_error);
89059+ atomic_inc_unchecked(&n_rcu_torture_error);
89060 WARN_ON_ONCE(1);
89061 }
89062 page += sprintf(page, "Reader Pipe: ");
89063@@ -992,7 +992,7 @@ rcu_torture_printk(char *page)
89064 page += sprintf(page, "Free-Block Circulation: ");
89065 for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++) {
89066 page += sprintf(page, " %d",
89067- atomic_read(&rcu_torture_wcount[i]));
89068+ atomic_read_unchecked(&rcu_torture_wcount[i]));
89069 }
89070 page += sprintf(page, "\n");
89071 if (cur_ops->stats)
89072@@ -1341,7 +1341,7 @@ rcu_torture_cleanup(void)
89073
89074 rcu_torture_stats_print(); /* -After- the stats thread is stopped! */
89075
89076- if (atomic_read(&n_rcu_torture_error) || n_rcu_torture_barrier_error)
89077+ if (atomic_read_unchecked(&n_rcu_torture_error) || n_rcu_torture_barrier_error)
89078 rcu_torture_print_module_parms(cur_ops, "End of test: FAILURE");
89079 else if (torture_onoff_failures())
89080 rcu_torture_print_module_parms(cur_ops,
89081@@ -1460,18 +1460,18 @@ rcu_torture_init(void)
89082
89083 rcu_torture_current = NULL;
89084 rcu_torture_current_version = 0;
89085- atomic_set(&n_rcu_torture_alloc, 0);
89086- atomic_set(&n_rcu_torture_alloc_fail, 0);
89087- atomic_set(&n_rcu_torture_free, 0);
89088- atomic_set(&n_rcu_torture_mberror, 0);
89089- atomic_set(&n_rcu_torture_error, 0);
89090+ atomic_set_unchecked(&n_rcu_torture_alloc, 0);
89091+ atomic_set_unchecked(&n_rcu_torture_alloc_fail, 0);
89092+ atomic_set_unchecked(&n_rcu_torture_free, 0);
89093+ atomic_set_unchecked(&n_rcu_torture_mberror, 0);
89094+ atomic_set_unchecked(&n_rcu_torture_error, 0);
89095 n_rcu_torture_barrier_error = 0;
89096 n_rcu_torture_boost_ktrerror = 0;
89097 n_rcu_torture_boost_rterror = 0;
89098 n_rcu_torture_boost_failure = 0;
89099 n_rcu_torture_boosts = 0;
89100 for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++)
89101- atomic_set(&rcu_torture_wcount[i], 0);
89102+ atomic_set_unchecked(&rcu_torture_wcount[i], 0);
89103 for_each_possible_cpu(cpu) {
89104 for (i = 0; i < RCU_TORTURE_PIPE_LEN + 1; i++) {
89105 per_cpu(rcu_torture_count, cpu)[i] = 0;
89106diff --git a/kernel/rcu/srcu.c b/kernel/rcu/srcu.c
89107index c639556..cf0a0d5 100644
89108--- a/kernel/rcu/srcu.c
89109+++ b/kernel/rcu/srcu.c
89110@@ -298,9 +298,9 @@ int __srcu_read_lock(struct srcu_struct *sp)
89111
89112 idx = ACCESS_ONCE(sp->completed) & 0x1;
89113 preempt_disable();
89114- ACCESS_ONCE(this_cpu_ptr(sp->per_cpu_ref)->c[idx]) += 1;
89115+ ACCESS_ONCE_RW(this_cpu_ptr(sp->per_cpu_ref)->c[idx]) += 1;
89116 smp_mb(); /* B */ /* Avoid leaking the critical section. */
89117- ACCESS_ONCE(this_cpu_ptr(sp->per_cpu_ref)->seq[idx]) += 1;
89118+ ACCESS_ONCE_RW(this_cpu_ptr(sp->per_cpu_ref)->seq[idx]) += 1;
89119 preempt_enable();
89120 return idx;
89121 }
89122diff --git a/kernel/rcu/tiny.c b/kernel/rcu/tiny.c
89123index d9efcc1..ea543e9 100644
89124--- a/kernel/rcu/tiny.c
89125+++ b/kernel/rcu/tiny.c
89126@@ -42,7 +42,7 @@
89127 /* Forward declarations for tiny_plugin.h. */
89128 struct rcu_ctrlblk;
89129 static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp);
89130-static void rcu_process_callbacks(struct softirq_action *unused);
89131+static void rcu_process_callbacks(void);
89132 static void __call_rcu(struct rcu_head *head,
89133 void (*func)(struct rcu_head *rcu),
89134 struct rcu_ctrlblk *rcp);
89135@@ -308,7 +308,7 @@ static void __rcu_process_callbacks(struct rcu_ctrlblk *rcp)
89136 false));
89137 }
89138
89139-static void rcu_process_callbacks(struct softirq_action *unused)
89140+static __latent_entropy void rcu_process_callbacks(void)
89141 {
89142 __rcu_process_callbacks(&rcu_sched_ctrlblk);
89143 __rcu_process_callbacks(&rcu_bh_ctrlblk);
89144diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
89145index 0c47e30..a084591 100644
89146--- a/kernel/rcu/tree.c
89147+++ b/kernel/rcu/tree.c
89148@@ -388,9 +388,9 @@ static void rcu_eqs_enter_common(struct rcu_dynticks *rdtp, long long oldval,
89149 rcu_prepare_for_idle(smp_processor_id());
89150 /* CPUs seeing atomic_inc() must see prior RCU read-side crit sects */
89151 smp_mb__before_atomic_inc(); /* See above. */
89152- atomic_inc(&rdtp->dynticks);
89153+ atomic_inc_unchecked(&rdtp->dynticks);
89154 smp_mb__after_atomic_inc(); /* Force ordering with next sojourn. */
89155- WARN_ON_ONCE(atomic_read(&rdtp->dynticks) & 0x1);
89156+ WARN_ON_ONCE(atomic_read_unchecked(&rdtp->dynticks) & 0x1);
89157
89158 /*
89159 * It is illegal to enter an extended quiescent state while
89160@@ -508,10 +508,10 @@ static void rcu_eqs_exit_common(struct rcu_dynticks *rdtp, long long oldval,
89161 int user)
89162 {
89163 smp_mb__before_atomic_inc(); /* Force ordering w/previous sojourn. */
89164- atomic_inc(&rdtp->dynticks);
89165+ atomic_inc_unchecked(&rdtp->dynticks);
89166 /* CPUs seeing atomic_inc() must see later RCU read-side crit sects */
89167 smp_mb__after_atomic_inc(); /* See above. */
89168- WARN_ON_ONCE(!(atomic_read(&rdtp->dynticks) & 0x1));
89169+ WARN_ON_ONCE(!(atomic_read_unchecked(&rdtp->dynticks) & 0x1));
89170 rcu_cleanup_after_idle(smp_processor_id());
89171 trace_rcu_dyntick(TPS("End"), oldval, rdtp->dynticks_nesting);
89172 if (!user && !is_idle_task(current)) {
89173@@ -632,14 +632,14 @@ void rcu_nmi_enter(void)
89174 struct rcu_dynticks *rdtp = this_cpu_ptr(&rcu_dynticks);
89175
89176 if (rdtp->dynticks_nmi_nesting == 0 &&
89177- (atomic_read(&rdtp->dynticks) & 0x1))
89178+ (atomic_read_unchecked(&rdtp->dynticks) & 0x1))
89179 return;
89180 rdtp->dynticks_nmi_nesting++;
89181 smp_mb__before_atomic_inc(); /* Force delay from prior write. */
89182- atomic_inc(&rdtp->dynticks);
89183+ atomic_inc_unchecked(&rdtp->dynticks);
89184 /* CPUs seeing atomic_inc() must see later RCU read-side crit sects */
89185 smp_mb__after_atomic_inc(); /* See above. */
89186- WARN_ON_ONCE(!(atomic_read(&rdtp->dynticks) & 0x1));
89187+ WARN_ON_ONCE(!(atomic_read_unchecked(&rdtp->dynticks) & 0x1));
89188 }
89189
89190 /**
89191@@ -658,9 +658,9 @@ void rcu_nmi_exit(void)
89192 return;
89193 /* CPUs seeing atomic_inc() must see prior RCU read-side crit sects */
89194 smp_mb__before_atomic_inc(); /* See above. */
89195- atomic_inc(&rdtp->dynticks);
89196+ atomic_inc_unchecked(&rdtp->dynticks);
89197 smp_mb__after_atomic_inc(); /* Force delay to next write. */
89198- WARN_ON_ONCE(atomic_read(&rdtp->dynticks) & 0x1);
89199+ WARN_ON_ONCE(atomic_read_unchecked(&rdtp->dynticks) & 0x1);
89200 }
89201
89202 /**
89203@@ -673,7 +673,7 @@ void rcu_nmi_exit(void)
89204 */
89205 bool notrace __rcu_is_watching(void)
89206 {
89207- return atomic_read(this_cpu_ptr(&rcu_dynticks.dynticks)) & 0x1;
89208+ return atomic_read_unchecked(this_cpu_ptr(&rcu_dynticks.dynticks)) & 0x1;
89209 }
89210
89211 /**
89212@@ -756,7 +756,7 @@ static int rcu_is_cpu_rrupt_from_idle(void)
89213 static int dyntick_save_progress_counter(struct rcu_data *rdp,
89214 bool *isidle, unsigned long *maxj)
89215 {
89216- rdp->dynticks_snap = atomic_add_return(0, &rdp->dynticks->dynticks);
89217+ rdp->dynticks_snap = atomic_add_return_unchecked(0, &rdp->dynticks->dynticks);
89218 rcu_sysidle_check_cpu(rdp, isidle, maxj);
89219 return (rdp->dynticks_snap & 0x1) == 0;
89220 }
89221@@ -779,7 +779,7 @@ static int rcu_implicit_dynticks_qs(struct rcu_data *rdp,
89222 unsigned int curr;
89223 unsigned int snap;
89224
89225- curr = (unsigned int)atomic_add_return(0, &rdp->dynticks->dynticks);
89226+ curr = (unsigned int)atomic_add_return_unchecked(0, &rdp->dynticks->dynticks);
89227 snap = (unsigned int)rdp->dynticks_snap;
89228
89229 /*
89230@@ -1449,9 +1449,9 @@ static int rcu_gp_init(struct rcu_state *rsp)
89231 rdp = this_cpu_ptr(rsp->rda);
89232 rcu_preempt_check_blocked_tasks(rnp);
89233 rnp->qsmask = rnp->qsmaskinit;
89234- ACCESS_ONCE(rnp->gpnum) = rsp->gpnum;
89235+ ACCESS_ONCE_RW(rnp->gpnum) = rsp->gpnum;
89236 WARN_ON_ONCE(rnp->completed != rsp->completed);
89237- ACCESS_ONCE(rnp->completed) = rsp->completed;
89238+ ACCESS_ONCE_RW(rnp->completed) = rsp->completed;
89239 if (rnp == rdp->mynode)
89240 __note_gp_changes(rsp, rnp, rdp);
89241 rcu_preempt_boost_start_gp(rnp);
89242@@ -1545,7 +1545,7 @@ static void rcu_gp_cleanup(struct rcu_state *rsp)
89243 rcu_for_each_node_breadth_first(rsp, rnp) {
89244 raw_spin_lock_irq(&rnp->lock);
89245 smp_mb__after_unlock_lock();
89246- ACCESS_ONCE(rnp->completed) = rsp->gpnum;
89247+ ACCESS_ONCE_RW(rnp->completed) = rsp->gpnum;
89248 rdp = this_cpu_ptr(rsp->rda);
89249 if (rnp == rdp->mynode)
89250 __note_gp_changes(rsp, rnp, rdp);
89251@@ -1560,7 +1560,7 @@ static void rcu_gp_cleanup(struct rcu_state *rsp)
89252 rcu_nocb_gp_set(rnp, nocb);
89253
89254 /* Declare grace period done. */
89255- ACCESS_ONCE(rsp->completed) = rsp->gpnum;
89256+ ACCESS_ONCE_RW(rsp->completed) = rsp->gpnum;
89257 trace_rcu_grace_period(rsp->name, rsp->completed, TPS("end"));
89258 rsp->fqs_state = RCU_GP_IDLE;
89259 rdp = this_cpu_ptr(rsp->rda);
89260@@ -1912,7 +1912,7 @@ rcu_send_cbs_to_orphanage(int cpu, struct rcu_state *rsp,
89261 rsp->qlen += rdp->qlen;
89262 rdp->n_cbs_orphaned += rdp->qlen;
89263 rdp->qlen_lazy = 0;
89264- ACCESS_ONCE(rdp->qlen) = 0;
89265+ ACCESS_ONCE_RW(rdp->qlen) = 0;
89266 }
89267
89268 /*
89269@@ -2159,7 +2159,7 @@ static void rcu_do_batch(struct rcu_state *rsp, struct rcu_data *rdp)
89270 }
89271 smp_mb(); /* List handling before counting for rcu_barrier(). */
89272 rdp->qlen_lazy -= count_lazy;
89273- ACCESS_ONCE(rdp->qlen) -= count;
89274+ ACCESS_ONCE_RW(rdp->qlen) -= count;
89275 rdp->n_cbs_invoked += count;
89276
89277 /* Reinstate batch limit if we have worked down the excess. */
89278@@ -2304,7 +2304,7 @@ static void force_quiescent_state(struct rcu_state *rsp)
89279 if (rnp_old != NULL)
89280 raw_spin_unlock(&rnp_old->fqslock);
89281 if (ret) {
89282- ACCESS_ONCE(rsp->n_force_qs_lh)++;
89283+ ACCESS_ONCE_RW(rsp->n_force_qs_lh)++;
89284 return;
89285 }
89286 rnp_old = rnp;
89287@@ -2316,7 +2316,7 @@ static void force_quiescent_state(struct rcu_state *rsp)
89288 smp_mb__after_unlock_lock();
89289 raw_spin_unlock(&rnp_old->fqslock);
89290 if (ACCESS_ONCE(rsp->gp_flags) & RCU_GP_FLAG_FQS) {
89291- ACCESS_ONCE(rsp->n_force_qs_lh)++;
89292+ ACCESS_ONCE_RW(rsp->n_force_qs_lh)++;
89293 raw_spin_unlock_irqrestore(&rnp_old->lock, flags);
89294 return; /* Someone beat us to it. */
89295 }
89296@@ -2362,7 +2362,7 @@ __rcu_process_callbacks(struct rcu_state *rsp)
89297 /*
89298 * Do RCU core processing for the current CPU.
89299 */
89300-static void rcu_process_callbacks(struct softirq_action *unused)
89301+static void rcu_process_callbacks(void)
89302 {
89303 struct rcu_state *rsp;
89304
89305@@ -2470,7 +2470,7 @@ __call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu),
89306 WARN_ON_ONCE((unsigned long)head & 0x3); /* Misaligned rcu_head! */
89307 if (debug_rcu_head_queue(head)) {
89308 /* Probable double call_rcu(), so leak the callback. */
89309- ACCESS_ONCE(head->func) = rcu_leak_callback;
89310+ ACCESS_ONCE_RW(head->func) = rcu_leak_callback;
89311 WARN_ONCE(1, "__call_rcu(): Leaked duplicate callback\n");
89312 return;
89313 }
89314@@ -2498,7 +2498,7 @@ __call_rcu(struct rcu_head *head, void (*func)(struct rcu_head *rcu),
89315 local_irq_restore(flags);
89316 return;
89317 }
89318- ACCESS_ONCE(rdp->qlen)++;
89319+ ACCESS_ONCE_RW(rdp->qlen)++;
89320 if (lazy)
89321 rdp->qlen_lazy++;
89322 else
89323@@ -2759,11 +2759,11 @@ void synchronize_sched_expedited(void)
89324 * counter wrap on a 32-bit system. Quite a few more CPUs would of
89325 * course be required on a 64-bit system.
89326 */
89327- if (ULONG_CMP_GE((ulong)atomic_long_read(&rsp->expedited_start),
89328+ if (ULONG_CMP_GE((ulong)atomic_long_read_unchecked(&rsp->expedited_start),
89329 (ulong)atomic_long_read(&rsp->expedited_done) +
89330 ULONG_MAX / 8)) {
89331 synchronize_sched();
89332- atomic_long_inc(&rsp->expedited_wrap);
89333+ atomic_long_inc_unchecked(&rsp->expedited_wrap);
89334 return;
89335 }
89336
89337@@ -2771,7 +2771,7 @@ void synchronize_sched_expedited(void)
89338 * Take a ticket. Note that atomic_inc_return() implies a
89339 * full memory barrier.
89340 */
89341- snap = atomic_long_inc_return(&rsp->expedited_start);
89342+ snap = atomic_long_inc_return_unchecked(&rsp->expedited_start);
89343 firstsnap = snap;
89344 get_online_cpus();
89345 WARN_ON_ONCE(cpu_is_offline(raw_smp_processor_id()));
89346@@ -2784,14 +2784,14 @@ void synchronize_sched_expedited(void)
89347 synchronize_sched_expedited_cpu_stop,
89348 NULL) == -EAGAIN) {
89349 put_online_cpus();
89350- atomic_long_inc(&rsp->expedited_tryfail);
89351+ atomic_long_inc_unchecked(&rsp->expedited_tryfail);
89352
89353 /* Check to see if someone else did our work for us. */
89354 s = atomic_long_read(&rsp->expedited_done);
89355 if (ULONG_CMP_GE((ulong)s, (ulong)firstsnap)) {
89356 /* ensure test happens before caller kfree */
89357 smp_mb__before_atomic_inc(); /* ^^^ */
89358- atomic_long_inc(&rsp->expedited_workdone1);
89359+ atomic_long_inc_unchecked(&rsp->expedited_workdone1);
89360 return;
89361 }
89362
89363@@ -2800,7 +2800,7 @@ void synchronize_sched_expedited(void)
89364 udelay(trycount * num_online_cpus());
89365 } else {
89366 wait_rcu_gp(call_rcu_sched);
89367- atomic_long_inc(&rsp->expedited_normal);
89368+ atomic_long_inc_unchecked(&rsp->expedited_normal);
89369 return;
89370 }
89371
89372@@ -2809,7 +2809,7 @@ void synchronize_sched_expedited(void)
89373 if (ULONG_CMP_GE((ulong)s, (ulong)firstsnap)) {
89374 /* ensure test happens before caller kfree */
89375 smp_mb__before_atomic_inc(); /* ^^^ */
89376- atomic_long_inc(&rsp->expedited_workdone2);
89377+ atomic_long_inc_unchecked(&rsp->expedited_workdone2);
89378 return;
89379 }
89380
89381@@ -2821,10 +2821,10 @@ void synchronize_sched_expedited(void)
89382 * period works for us.
89383 */
89384 get_online_cpus();
89385- snap = atomic_long_read(&rsp->expedited_start);
89386+ snap = atomic_long_read_unchecked(&rsp->expedited_start);
89387 smp_mb(); /* ensure read is before try_stop_cpus(). */
89388 }
89389- atomic_long_inc(&rsp->expedited_stoppedcpus);
89390+ atomic_long_inc_unchecked(&rsp->expedited_stoppedcpus);
89391
89392 /*
89393 * Everyone up to our most recent fetch is covered by our grace
89394@@ -2833,16 +2833,16 @@ void synchronize_sched_expedited(void)
89395 * than we did already did their update.
89396 */
89397 do {
89398- atomic_long_inc(&rsp->expedited_done_tries);
89399+ atomic_long_inc_unchecked(&rsp->expedited_done_tries);
89400 s = atomic_long_read(&rsp->expedited_done);
89401 if (ULONG_CMP_GE((ulong)s, (ulong)snap)) {
89402 /* ensure test happens before caller kfree */
89403 smp_mb__before_atomic_inc(); /* ^^^ */
89404- atomic_long_inc(&rsp->expedited_done_lost);
89405+ atomic_long_inc_unchecked(&rsp->expedited_done_lost);
89406 break;
89407 }
89408 } while (atomic_long_cmpxchg(&rsp->expedited_done, s, snap) != s);
89409- atomic_long_inc(&rsp->expedited_done_exit);
89410+ atomic_long_inc_unchecked(&rsp->expedited_done_exit);
89411
89412 put_online_cpus();
89413 }
89414@@ -3048,7 +3048,7 @@ static void _rcu_barrier(struct rcu_state *rsp)
89415 * ACCESS_ONCE() to prevent the compiler from speculating
89416 * the increment to precede the early-exit check.
89417 */
89418- ACCESS_ONCE(rsp->n_barrier_done)++;
89419+ ACCESS_ONCE_RW(rsp->n_barrier_done)++;
89420 WARN_ON_ONCE((rsp->n_barrier_done & 0x1) != 1);
89421 _rcu_barrier_trace(rsp, "Inc1", -1, rsp->n_barrier_done);
89422 smp_mb(); /* Order ->n_barrier_done increment with below mechanism. */
89423@@ -3098,7 +3098,7 @@ static void _rcu_barrier(struct rcu_state *rsp)
89424
89425 /* Increment ->n_barrier_done to prevent duplicate work. */
89426 smp_mb(); /* Keep increment after above mechanism. */
89427- ACCESS_ONCE(rsp->n_barrier_done)++;
89428+ ACCESS_ONCE_RW(rsp->n_barrier_done)++;
89429 WARN_ON_ONCE((rsp->n_barrier_done & 0x1) != 0);
89430 _rcu_barrier_trace(rsp, "Inc2", -1, rsp->n_barrier_done);
89431 smp_mb(); /* Keep increment before caller's subsequent code. */
89432@@ -3143,10 +3143,10 @@ rcu_boot_init_percpu_data(int cpu, struct rcu_state *rsp)
89433 rdp->grpmask = 1UL << (cpu - rdp->mynode->grplo);
89434 init_callback_list(rdp);
89435 rdp->qlen_lazy = 0;
89436- ACCESS_ONCE(rdp->qlen) = 0;
89437+ ACCESS_ONCE_RW(rdp->qlen) = 0;
89438 rdp->dynticks = &per_cpu(rcu_dynticks, cpu);
89439 WARN_ON_ONCE(rdp->dynticks->dynticks_nesting != DYNTICK_TASK_EXIT_IDLE);
89440- WARN_ON_ONCE(atomic_read(&rdp->dynticks->dynticks) != 1);
89441+ WARN_ON_ONCE(atomic_read_unchecked(&rdp->dynticks->dynticks) != 1);
89442 rdp->cpu = cpu;
89443 rdp->rsp = rsp;
89444 rcu_boot_init_nocb_percpu_data(rdp);
89445@@ -3180,8 +3180,8 @@ rcu_init_percpu_data(int cpu, struct rcu_state *rsp, int preemptible)
89446 init_callback_list(rdp); /* Re-enable callbacks on this CPU. */
89447 rdp->dynticks->dynticks_nesting = DYNTICK_TASK_EXIT_IDLE;
89448 rcu_sysidle_init_percpu_data(rdp->dynticks);
89449- atomic_set(&rdp->dynticks->dynticks,
89450- (atomic_read(&rdp->dynticks->dynticks) & ~0x1) + 1);
89451+ atomic_set_unchecked(&rdp->dynticks->dynticks,
89452+ (atomic_read_unchecked(&rdp->dynticks->dynticks) & ~0x1) + 1);
89453 raw_spin_unlock(&rnp->lock); /* irqs remain disabled. */
89454
89455 /* Add CPU to rcu_node bitmasks. */
89456diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
89457index 75dc3c3..b95d624 100644
89458--- a/kernel/rcu/tree.h
89459+++ b/kernel/rcu/tree.h
89460@@ -87,11 +87,11 @@ struct rcu_dynticks {
89461 long long dynticks_nesting; /* Track irq/process nesting level. */
89462 /* Process level is worth LLONG_MAX/2. */
89463 int dynticks_nmi_nesting; /* Track NMI nesting level. */
89464- atomic_t dynticks; /* Even value for idle, else odd. */
89465+ atomic_unchecked_t dynticks;/* Even value for idle, else odd. */
89466 #ifdef CONFIG_NO_HZ_FULL_SYSIDLE
89467 long long dynticks_idle_nesting;
89468 /* irq/process nesting level from idle. */
89469- atomic_t dynticks_idle; /* Even value for idle, else odd. */
89470+ atomic_unchecked_t dynticks_idle;/* Even value for idle, else odd. */
89471 /* "Idle" excludes userspace execution. */
89472 unsigned long dynticks_idle_jiffies;
89473 /* End of last non-NMI non-idle period. */
89474@@ -431,17 +431,17 @@ struct rcu_state {
89475 /* _rcu_barrier(). */
89476 /* End of fields guarded by barrier_mutex. */
89477
89478- atomic_long_t expedited_start; /* Starting ticket. */
89479- atomic_long_t expedited_done; /* Done ticket. */
89480- atomic_long_t expedited_wrap; /* # near-wrap incidents. */
89481- atomic_long_t expedited_tryfail; /* # acquisition failures. */
89482- atomic_long_t expedited_workdone1; /* # done by others #1. */
89483- atomic_long_t expedited_workdone2; /* # done by others #2. */
89484- atomic_long_t expedited_normal; /* # fallbacks to normal. */
89485- atomic_long_t expedited_stoppedcpus; /* # successful stop_cpus. */
89486- atomic_long_t expedited_done_tries; /* # tries to update _done. */
89487- atomic_long_t expedited_done_lost; /* # times beaten to _done. */
89488- atomic_long_t expedited_done_exit; /* # times exited _done loop. */
89489+ atomic_long_unchecked_t expedited_start; /* Starting ticket. */
89490+ atomic_long_t expedited_done; /* Done ticket. */
89491+ atomic_long_unchecked_t expedited_wrap; /* # near-wrap incidents. */
89492+ atomic_long_unchecked_t expedited_tryfail; /* # acquisition failures. */
89493+ atomic_long_unchecked_t expedited_workdone1; /* # done by others #1. */
89494+ atomic_long_unchecked_t expedited_workdone2; /* # done by others #2. */
89495+ atomic_long_unchecked_t expedited_normal; /* # fallbacks to normal. */
89496+ atomic_long_unchecked_t expedited_stoppedcpus; /* # successful stop_cpus. */
89497+ atomic_long_unchecked_t expedited_done_tries; /* # tries to update _done. */
89498+ atomic_long_unchecked_t expedited_done_lost; /* # times beaten to _done. */
89499+ atomic_long_unchecked_t expedited_done_exit; /* # times exited _done loop. */
89500
89501 unsigned long jiffies_force_qs; /* Time at which to invoke */
89502 /* force_quiescent_state(). */
89503diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
89504index 962d1d5..c6c62d12d 100644
89505--- a/kernel/rcu/tree_plugin.h
89506+++ b/kernel/rcu/tree_plugin.h
89507@@ -758,7 +758,7 @@ static int rcu_preempted_readers_exp(struct rcu_node *rnp)
89508 static int sync_rcu_preempt_exp_done(struct rcu_node *rnp)
89509 {
89510 return !rcu_preempted_readers_exp(rnp) &&
89511- ACCESS_ONCE(rnp->expmask) == 0;
89512+ ACCESS_ONCE_RW(rnp->expmask) == 0;
89513 }
89514
89515 /*
89516@@ -920,7 +920,7 @@ void synchronize_rcu_expedited(void)
89517
89518 /* Clean up and exit. */
89519 smp_mb(); /* ensure expedited GP seen before counter increment. */
89520- ACCESS_ONCE(sync_rcu_preempt_exp_count)++;
89521+ ACCESS_ONCE_RW(sync_rcu_preempt_exp_count)++;
89522 unlock_mb_ret:
89523 mutex_unlock(&sync_rcu_preempt_exp_mutex);
89524 mb_ret:
89525@@ -1496,7 +1496,7 @@ static void rcu_boost_kthread_setaffinity(struct rcu_node *rnp, int outgoingcpu)
89526 free_cpumask_var(cm);
89527 }
89528
89529-static struct smp_hotplug_thread rcu_cpu_thread_spec = {
89530+static struct smp_hotplug_thread rcu_cpu_thread_spec __read_only = {
89531 .store = &rcu_cpu_kthread_task,
89532 .thread_should_run = rcu_cpu_kthread_should_run,
89533 .thread_fn = rcu_cpu_kthread,
89534@@ -1972,7 +1972,7 @@ static void print_cpu_stall_info(struct rcu_state *rsp, int cpu)
89535 print_cpu_stall_fast_no_hz(fast_no_hz, cpu);
89536 pr_err("\t%d: (%lu %s) idle=%03x/%llx/%d softirq=%u/%u %s\n",
89537 cpu, ticks_value, ticks_title,
89538- atomic_read(&rdtp->dynticks) & 0xfff,
89539+ atomic_read_unchecked(&rdtp->dynticks) & 0xfff,
89540 rdtp->dynticks_nesting, rdtp->dynticks_nmi_nesting,
89541 rdp->softirq_snap, kstat_softirqs_cpu(RCU_SOFTIRQ, cpu),
89542 fast_no_hz);
89543@@ -2138,7 +2138,7 @@ static void __call_rcu_nocb_enqueue(struct rcu_data *rdp,
89544
89545 /* Enqueue the callback on the nocb list and update counts. */
89546 old_rhpp = xchg(&rdp->nocb_tail, rhtp);
89547- ACCESS_ONCE(*old_rhpp) = rhp;
89548+ ACCESS_ONCE_RW(*old_rhpp) = rhp;
89549 atomic_long_add(rhcount, &rdp->nocb_q_count);
89550 atomic_long_add(rhcount_lazy, &rdp->nocb_q_count_lazy);
89551
89552@@ -2311,12 +2311,12 @@ static int rcu_nocb_kthread(void *arg)
89553 * Extract queued callbacks, update counts, and wait
89554 * for a grace period to elapse.
89555 */
89556- ACCESS_ONCE(rdp->nocb_head) = NULL;
89557+ ACCESS_ONCE_RW(rdp->nocb_head) = NULL;
89558 tail = xchg(&rdp->nocb_tail, &rdp->nocb_head);
89559 c = atomic_long_xchg(&rdp->nocb_q_count, 0);
89560 cl = atomic_long_xchg(&rdp->nocb_q_count_lazy, 0);
89561- ACCESS_ONCE(rdp->nocb_p_count) += c;
89562- ACCESS_ONCE(rdp->nocb_p_count_lazy) += cl;
89563+ ACCESS_ONCE_RW(rdp->nocb_p_count) += c;
89564+ ACCESS_ONCE_RW(rdp->nocb_p_count_lazy) += cl;
89565 rcu_nocb_wait_gp(rdp);
89566
89567 /* Each pass through the following loop invokes a callback. */
89568@@ -2342,8 +2342,8 @@ static int rcu_nocb_kthread(void *arg)
89569 list = next;
89570 }
89571 trace_rcu_batch_end(rdp->rsp->name, c, !!list, 0, 0, 1);
89572- ACCESS_ONCE(rdp->nocb_p_count) -= c;
89573- ACCESS_ONCE(rdp->nocb_p_count_lazy) -= cl;
89574+ ACCESS_ONCE_RW(rdp->nocb_p_count) -= c;
89575+ ACCESS_ONCE_RW(rdp->nocb_p_count_lazy) -= cl;
89576 rdp->n_nocbs_invoked += c;
89577 }
89578 return 0;
89579@@ -2360,7 +2360,7 @@ static void do_nocb_deferred_wakeup(struct rcu_data *rdp)
89580 {
89581 if (!rcu_nocb_need_deferred_wakeup(rdp))
89582 return;
89583- ACCESS_ONCE(rdp->nocb_defer_wakeup) = false;
89584+ ACCESS_ONCE_RW(rdp->nocb_defer_wakeup) = false;
89585 wake_up(&rdp->nocb_wq);
89586 trace_rcu_nocb_wake(rdp->rsp->name, rdp->cpu, TPS("DeferredWakeEmpty"));
89587 }
89588@@ -2386,7 +2386,7 @@ static void __init rcu_spawn_nocb_kthreads(struct rcu_state *rsp)
89589 t = kthread_run(rcu_nocb_kthread, rdp,
89590 "rcuo%c/%d", rsp->abbr, cpu);
89591 BUG_ON(IS_ERR(t));
89592- ACCESS_ONCE(rdp->nocb_kthread) = t;
89593+ ACCESS_ONCE_RW(rdp->nocb_kthread) = t;
89594 }
89595 }
89596
89597@@ -2522,11 +2522,11 @@ static void rcu_sysidle_enter(struct rcu_dynticks *rdtp, int irq)
89598
89599 /* Record start of fully idle period. */
89600 j = jiffies;
89601- ACCESS_ONCE(rdtp->dynticks_idle_jiffies) = j;
89602+ ACCESS_ONCE_RW(rdtp->dynticks_idle_jiffies) = j;
89603 smp_mb__before_atomic_inc();
89604- atomic_inc(&rdtp->dynticks_idle);
89605+ atomic_inc_unchecked(&rdtp->dynticks_idle);
89606 smp_mb__after_atomic_inc();
89607- WARN_ON_ONCE(atomic_read(&rdtp->dynticks_idle) & 0x1);
89608+ WARN_ON_ONCE(atomic_read_unchecked(&rdtp->dynticks_idle) & 0x1);
89609 }
89610
89611 /*
89612@@ -2591,9 +2591,9 @@ static void rcu_sysidle_exit(struct rcu_dynticks *rdtp, int irq)
89613
89614 /* Record end of idle period. */
89615 smp_mb__before_atomic_inc();
89616- atomic_inc(&rdtp->dynticks_idle);
89617+ atomic_inc_unchecked(&rdtp->dynticks_idle);
89618 smp_mb__after_atomic_inc();
89619- WARN_ON_ONCE(!(atomic_read(&rdtp->dynticks_idle) & 0x1));
89620+ WARN_ON_ONCE(!(atomic_read_unchecked(&rdtp->dynticks_idle) & 0x1));
89621
89622 /*
89623 * If we are the timekeeping CPU, we are permitted to be non-idle
89624@@ -2634,7 +2634,7 @@ static void rcu_sysidle_check_cpu(struct rcu_data *rdp, bool *isidle,
89625 WARN_ON_ONCE(smp_processor_id() != tick_do_timer_cpu);
89626
89627 /* Pick up current idle and NMI-nesting counter and check. */
89628- cur = atomic_read(&rdtp->dynticks_idle);
89629+ cur = atomic_read_unchecked(&rdtp->dynticks_idle);
89630 if (cur & 0x1) {
89631 *isidle = false; /* We are not idle! */
89632 return;
89633@@ -2697,7 +2697,7 @@ static void rcu_sysidle(unsigned long j)
89634 case RCU_SYSIDLE_NOT:
89635
89636 /* First time all are idle, so note a short idle period. */
89637- ACCESS_ONCE(full_sysidle_state) = RCU_SYSIDLE_SHORT;
89638+ ACCESS_ONCE_RW(full_sysidle_state) = RCU_SYSIDLE_SHORT;
89639 break;
89640
89641 case RCU_SYSIDLE_SHORT:
89642@@ -2734,7 +2734,7 @@ static void rcu_sysidle(unsigned long j)
89643 static void rcu_sysidle_cancel(void)
89644 {
89645 smp_mb();
89646- ACCESS_ONCE(full_sysidle_state) = RCU_SYSIDLE_NOT;
89647+ ACCESS_ONCE_RW(full_sysidle_state) = RCU_SYSIDLE_NOT;
89648 }
89649
89650 /*
89651@@ -2782,7 +2782,7 @@ static void rcu_sysidle_cb(struct rcu_head *rhp)
89652 smp_mb(); /* grace period precedes setting inuse. */
89653
89654 rshp = container_of(rhp, struct rcu_sysidle_head, rh);
89655- ACCESS_ONCE(rshp->inuse) = 0;
89656+ ACCESS_ONCE_RW(rshp->inuse) = 0;
89657 }
89658
89659 /*
89660diff --git a/kernel/rcu/tree_trace.c b/kernel/rcu/tree_trace.c
89661index 5cdc62e..cc52e88 100644
89662--- a/kernel/rcu/tree_trace.c
89663+++ b/kernel/rcu/tree_trace.c
89664@@ -121,7 +121,7 @@ static void print_one_rcu_data(struct seq_file *m, struct rcu_data *rdp)
89665 ulong2long(rdp->completed), ulong2long(rdp->gpnum),
89666 rdp->passed_quiesce, rdp->qs_pending);
89667 seq_printf(m, " dt=%d/%llx/%d df=%lu",
89668- atomic_read(&rdp->dynticks->dynticks),
89669+ atomic_read_unchecked(&rdp->dynticks->dynticks),
89670 rdp->dynticks->dynticks_nesting,
89671 rdp->dynticks->dynticks_nmi_nesting,
89672 rdp->dynticks_fqs);
89673@@ -182,17 +182,17 @@ static int show_rcuexp(struct seq_file *m, void *v)
89674 struct rcu_state *rsp = (struct rcu_state *)m->private;
89675
89676 seq_printf(m, "s=%lu d=%lu w=%lu tf=%lu wd1=%lu wd2=%lu n=%lu sc=%lu dt=%lu dl=%lu dx=%lu\n",
89677- atomic_long_read(&rsp->expedited_start),
89678+ atomic_long_read_unchecked(&rsp->expedited_start),
89679 atomic_long_read(&rsp->expedited_done),
89680- atomic_long_read(&rsp->expedited_wrap),
89681- atomic_long_read(&rsp->expedited_tryfail),
89682- atomic_long_read(&rsp->expedited_workdone1),
89683- atomic_long_read(&rsp->expedited_workdone2),
89684- atomic_long_read(&rsp->expedited_normal),
89685- atomic_long_read(&rsp->expedited_stoppedcpus),
89686- atomic_long_read(&rsp->expedited_done_tries),
89687- atomic_long_read(&rsp->expedited_done_lost),
89688- atomic_long_read(&rsp->expedited_done_exit));
89689+ atomic_long_read_unchecked(&rsp->expedited_wrap),
89690+ atomic_long_read_unchecked(&rsp->expedited_tryfail),
89691+ atomic_long_read_unchecked(&rsp->expedited_workdone1),
89692+ atomic_long_read_unchecked(&rsp->expedited_workdone2),
89693+ atomic_long_read_unchecked(&rsp->expedited_normal),
89694+ atomic_long_read_unchecked(&rsp->expedited_stoppedcpus),
89695+ atomic_long_read_unchecked(&rsp->expedited_done_tries),
89696+ atomic_long_read_unchecked(&rsp->expedited_done_lost),
89697+ atomic_long_read_unchecked(&rsp->expedited_done_exit));
89698 return 0;
89699 }
89700
89701diff --git a/kernel/rcu/update.c b/kernel/rcu/update.c
89702index 4c0a9b0..7e81362 100644
89703--- a/kernel/rcu/update.c
89704+++ b/kernel/rcu/update.c
89705@@ -311,10 +311,10 @@ int rcu_jiffies_till_stall_check(void)
89706 * for CONFIG_RCU_CPU_STALL_TIMEOUT.
89707 */
89708 if (till_stall_check < 3) {
89709- ACCESS_ONCE(rcu_cpu_stall_timeout) = 3;
89710+ ACCESS_ONCE_RW(rcu_cpu_stall_timeout) = 3;
89711 till_stall_check = 3;
89712 } else if (till_stall_check > 300) {
89713- ACCESS_ONCE(rcu_cpu_stall_timeout) = 300;
89714+ ACCESS_ONCE_RW(rcu_cpu_stall_timeout) = 300;
89715 till_stall_check = 300;
89716 }
89717 return till_stall_check * HZ + RCU_STALL_DELAY_DELTA;
89718diff --git a/kernel/resource.c b/kernel/resource.c
89719index 8957d68..770cbe4 100644
89720--- a/kernel/resource.c
89721+++ b/kernel/resource.c
89722@@ -152,8 +152,18 @@ static const struct file_operations proc_iomem_operations = {
89723
89724 static int __init ioresources_init(void)
89725 {
89726+#ifdef CONFIG_GRKERNSEC_PROC_ADD
89727+#ifdef CONFIG_GRKERNSEC_PROC_USER
89728+ proc_create("ioports", S_IRUSR, NULL, &proc_ioports_operations);
89729+ proc_create("iomem", S_IRUSR, NULL, &proc_iomem_operations);
89730+#elif defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
89731+ proc_create("ioports", S_IRUSR | S_IRGRP, NULL, &proc_ioports_operations);
89732+ proc_create("iomem", S_IRUSR | S_IRGRP, NULL, &proc_iomem_operations);
89733+#endif
89734+#else
89735 proc_create("ioports", 0, NULL, &proc_ioports_operations);
89736 proc_create("iomem", 0, NULL, &proc_iomem_operations);
89737+#endif
89738 return 0;
89739 }
89740 __initcall(ioresources_init);
89741diff --git a/kernel/sched/auto_group.c b/kernel/sched/auto_group.c
89742index e73efba..c9bfbd4 100644
89743--- a/kernel/sched/auto_group.c
89744+++ b/kernel/sched/auto_group.c
89745@@ -11,7 +11,7 @@
89746
89747 unsigned int __read_mostly sysctl_sched_autogroup_enabled = 1;
89748 static struct autogroup autogroup_default;
89749-static atomic_t autogroup_seq_nr;
89750+static atomic_unchecked_t autogroup_seq_nr;
89751
89752 void __init autogroup_init(struct task_struct *init_task)
89753 {
89754@@ -79,7 +79,7 @@ static inline struct autogroup *autogroup_create(void)
89755
89756 kref_init(&ag->kref);
89757 init_rwsem(&ag->lock);
89758- ag->id = atomic_inc_return(&autogroup_seq_nr);
89759+ ag->id = atomic_inc_return_unchecked(&autogroup_seq_nr);
89760 ag->tg = tg;
89761 #ifdef CONFIG_RT_GROUP_SCHED
89762 /*
89763diff --git a/kernel/sched/completion.c b/kernel/sched/completion.c
89764index a63f4dc..349bbb0 100644
89765--- a/kernel/sched/completion.c
89766+++ b/kernel/sched/completion.c
89767@@ -204,7 +204,7 @@ EXPORT_SYMBOL(wait_for_completion_interruptible);
89768 * Return: -ERESTARTSYS if interrupted, 0 if timed out, positive (at least 1,
89769 * or number of jiffies left till timeout) if completed.
89770 */
89771-long __sched
89772+long __sched __intentional_overflow(-1)
89773 wait_for_completion_interruptible_timeout(struct completion *x,
89774 unsigned long timeout)
89775 {
89776@@ -221,7 +221,7 @@ EXPORT_SYMBOL(wait_for_completion_interruptible_timeout);
89777 *
89778 * Return: -ERESTARTSYS if interrupted, 0 if completed.
89779 */
89780-int __sched wait_for_completion_killable(struct completion *x)
89781+int __sched __intentional_overflow(-1) wait_for_completion_killable(struct completion *x)
89782 {
89783 long t = wait_for_common(x, MAX_SCHEDULE_TIMEOUT, TASK_KILLABLE);
89784 if (t == -ERESTARTSYS)
89785@@ -242,7 +242,7 @@ EXPORT_SYMBOL(wait_for_completion_killable);
89786 * Return: -ERESTARTSYS if interrupted, 0 if timed out, positive (at least 1,
89787 * or number of jiffies left till timeout) if completed.
89788 */
89789-long __sched
89790+long __sched __intentional_overflow(-1)
89791 wait_for_completion_killable_timeout(struct completion *x,
89792 unsigned long timeout)
89793 {
89794diff --git a/kernel/sched/core.c b/kernel/sched/core.c
89795index 084d17f..e416b9f 100644
89796--- a/kernel/sched/core.c
89797+++ b/kernel/sched/core.c
89798@@ -1775,7 +1775,7 @@ void set_numabalancing_state(bool enabled)
89799 int sysctl_numa_balancing(struct ctl_table *table, int write,
89800 void __user *buffer, size_t *lenp, loff_t *ppos)
89801 {
89802- struct ctl_table t;
89803+ ctl_table_no_const t;
89804 int err;
89805 int state = numabalancing_enabled;
89806
89807@@ -2238,8 +2238,10 @@ context_switch(struct rq *rq, struct task_struct *prev,
89808 next->active_mm = oldmm;
89809 atomic_inc(&oldmm->mm_count);
89810 enter_lazy_tlb(oldmm, next);
89811- } else
89812+ } else {
89813 switch_mm(oldmm, mm, next);
89814+ populate_stack();
89815+ }
89816
89817 if (!prev->mm) {
89818 prev->active_mm = NULL;
89819@@ -3004,6 +3006,8 @@ int can_nice(const struct task_struct *p, const int nice)
89820 /* convert nice value [19,-20] to rlimit style value [1,40] */
89821 int nice_rlim = 20 - nice;
89822
89823+ gr_learn_resource(p, RLIMIT_NICE, nice_rlim, 1);
89824+
89825 return (nice_rlim <= task_rlimit(p, RLIMIT_NICE) ||
89826 capable(CAP_SYS_NICE));
89827 }
89828@@ -3037,7 +3041,8 @@ SYSCALL_DEFINE1(nice, int, increment)
89829 if (nice > MAX_NICE)
89830 nice = MAX_NICE;
89831
89832- if (increment < 0 && !can_nice(current, nice))
89833+ if (increment < 0 && (!can_nice(current, nice) ||
89834+ gr_handle_chroot_nice()))
89835 return -EPERM;
89836
89837 retval = security_task_setnice(current, nice);
89838@@ -3310,6 +3315,7 @@ recheck:
89839 if (policy != p->policy && !rlim_rtprio)
89840 return -EPERM;
89841
89842+ gr_learn_resource(p, RLIMIT_RTPRIO, attr->sched_priority, 1);
89843 /* can't increase priority */
89844 if (attr->sched_priority > p->rt_priority &&
89845 attr->sched_priority > rlim_rtprio)
89846@@ -4708,6 +4714,7 @@ void idle_task_exit(void)
89847
89848 if (mm != &init_mm) {
89849 switch_mm(mm, &init_mm, current);
89850+ populate_stack();
89851 finish_arch_post_lock_switch();
89852 }
89853 mmdrop(mm);
89854@@ -4803,7 +4810,7 @@ static void migrate_tasks(unsigned int dead_cpu)
89855
89856 #if defined(CONFIG_SCHED_DEBUG) && defined(CONFIG_SYSCTL)
89857
89858-static struct ctl_table sd_ctl_dir[] = {
89859+static ctl_table_no_const sd_ctl_dir[] __read_only = {
89860 {
89861 .procname = "sched_domain",
89862 .mode = 0555,
89863@@ -4820,17 +4827,17 @@ static struct ctl_table sd_ctl_root[] = {
89864 {}
89865 };
89866
89867-static struct ctl_table *sd_alloc_ctl_entry(int n)
89868+static ctl_table_no_const *sd_alloc_ctl_entry(int n)
89869 {
89870- struct ctl_table *entry =
89871+ ctl_table_no_const *entry =
89872 kcalloc(n, sizeof(struct ctl_table), GFP_KERNEL);
89873
89874 return entry;
89875 }
89876
89877-static void sd_free_ctl_entry(struct ctl_table **tablep)
89878+static void sd_free_ctl_entry(ctl_table_no_const *tablep)
89879 {
89880- struct ctl_table *entry;
89881+ ctl_table_no_const *entry;
89882
89883 /*
89884 * In the intermediate directories, both the child directory and
89885@@ -4838,22 +4845,25 @@ static void sd_free_ctl_entry(struct ctl_table **tablep)
89886 * will always be set. In the lowest directory the names are
89887 * static strings and all have proc handlers.
89888 */
89889- for (entry = *tablep; entry->mode; entry++) {
89890- if (entry->child)
89891- sd_free_ctl_entry(&entry->child);
89892+ for (entry = tablep; entry->mode; entry++) {
89893+ if (entry->child) {
89894+ sd_free_ctl_entry(entry->child);
89895+ pax_open_kernel();
89896+ entry->child = NULL;
89897+ pax_close_kernel();
89898+ }
89899 if (entry->proc_handler == NULL)
89900 kfree(entry->procname);
89901 }
89902
89903- kfree(*tablep);
89904- *tablep = NULL;
89905+ kfree(tablep);
89906 }
89907
89908 static int min_load_idx = 0;
89909 static int max_load_idx = CPU_LOAD_IDX_MAX-1;
89910
89911 static void
89912-set_table_entry(struct ctl_table *entry,
89913+set_table_entry(ctl_table_no_const *entry,
89914 const char *procname, void *data, int maxlen,
89915 umode_t mode, proc_handler *proc_handler,
89916 bool load_idx)
89917@@ -4873,7 +4883,7 @@ set_table_entry(struct ctl_table *entry,
89918 static struct ctl_table *
89919 sd_alloc_ctl_domain_table(struct sched_domain *sd)
89920 {
89921- struct ctl_table *table = sd_alloc_ctl_entry(14);
89922+ ctl_table_no_const *table = sd_alloc_ctl_entry(14);
89923
89924 if (table == NULL)
89925 return NULL;
89926@@ -4911,9 +4921,9 @@ sd_alloc_ctl_domain_table(struct sched_domain *sd)
89927 return table;
89928 }
89929
89930-static struct ctl_table *sd_alloc_ctl_cpu_table(int cpu)
89931+static ctl_table_no_const *sd_alloc_ctl_cpu_table(int cpu)
89932 {
89933- struct ctl_table *entry, *table;
89934+ ctl_table_no_const *entry, *table;
89935 struct sched_domain *sd;
89936 int domain_num = 0, i;
89937 char buf[32];
89938@@ -4940,11 +4950,13 @@ static struct ctl_table_header *sd_sysctl_header;
89939 static void register_sched_domain_sysctl(void)
89940 {
89941 int i, cpu_num = num_possible_cpus();
89942- struct ctl_table *entry = sd_alloc_ctl_entry(cpu_num + 1);
89943+ ctl_table_no_const *entry = sd_alloc_ctl_entry(cpu_num + 1);
89944 char buf[32];
89945
89946 WARN_ON(sd_ctl_dir[0].child);
89947+ pax_open_kernel();
89948 sd_ctl_dir[0].child = entry;
89949+ pax_close_kernel();
89950
89951 if (entry == NULL)
89952 return;
89953@@ -4967,8 +4979,12 @@ static void unregister_sched_domain_sysctl(void)
89954 if (sd_sysctl_header)
89955 unregister_sysctl_table(sd_sysctl_header);
89956 sd_sysctl_header = NULL;
89957- if (sd_ctl_dir[0].child)
89958- sd_free_ctl_entry(&sd_ctl_dir[0].child);
89959+ if (sd_ctl_dir[0].child) {
89960+ sd_free_ctl_entry(sd_ctl_dir[0].child);
89961+ pax_open_kernel();
89962+ sd_ctl_dir[0].child = NULL;
89963+ pax_close_kernel();
89964+ }
89965 }
89966 #else
89967 static void register_sched_domain_sysctl(void)
89968diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
89969index 8cbe2d2..61f20a1 100644
89970--- a/kernel/sched/fair.c
89971+++ b/kernel/sched/fair.c
89972@@ -1806,7 +1806,7 @@ void task_numa_fault(int last_cpupid, int mem_node, int pages, int flags)
89973
89974 static void reset_ptenuma_scan(struct task_struct *p)
89975 {
89976- ACCESS_ONCE(p->mm->numa_scan_seq)++;
89977+ ACCESS_ONCE_RW(p->mm->numa_scan_seq)++;
89978 p->mm->numa_scan_offset = 0;
89979 }
89980
89981@@ -7181,7 +7181,7 @@ static void nohz_idle_balance(struct rq *this_rq, enum cpu_idle_type idle) { }
89982 * run_rebalance_domains is triggered when needed from the scheduler tick.
89983 * Also triggered for nohz idle balancing (with nohz_balancing_kick set).
89984 */
89985-static void run_rebalance_domains(struct softirq_action *h)
89986+static __latent_entropy void run_rebalance_domains(void)
89987 {
89988 struct rq *this_rq = this_rq();
89989 enum cpu_idle_type idle = this_rq->idle_balance ?
89990diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
89991index 369b4d6..fa4eb3b 100644
89992--- a/kernel/sched/sched.h
89993+++ b/kernel/sched/sched.h
89994@@ -1157,7 +1157,7 @@ struct sched_class {
89995 #ifdef CONFIG_FAIR_GROUP_SCHED
89996 void (*task_move_group) (struct task_struct *p, int on_rq);
89997 #endif
89998-};
89999+} __do_const;
90000
90001 static inline void put_prev_task(struct rq *rq, struct task_struct *prev)
90002 {
90003diff --git a/kernel/signal.c b/kernel/signal.c
90004index 6ea13c0..31e3b25 100644
90005--- a/kernel/signal.c
90006+++ b/kernel/signal.c
90007@@ -53,12 +53,12 @@ static struct kmem_cache *sigqueue_cachep;
90008
90009 int print_fatal_signals __read_mostly;
90010
90011-static void __user *sig_handler(struct task_struct *t, int sig)
90012+static __sighandler_t sig_handler(struct task_struct *t, int sig)
90013 {
90014 return t->sighand->action[sig - 1].sa.sa_handler;
90015 }
90016
90017-static int sig_handler_ignored(void __user *handler, int sig)
90018+static int sig_handler_ignored(__sighandler_t handler, int sig)
90019 {
90020 /* Is it explicitly or implicitly ignored? */
90021 return handler == SIG_IGN ||
90022@@ -67,7 +67,7 @@ static int sig_handler_ignored(void __user *handler, int sig)
90023
90024 static int sig_task_ignored(struct task_struct *t, int sig, bool force)
90025 {
90026- void __user *handler;
90027+ __sighandler_t handler;
90028
90029 handler = sig_handler(t, sig);
90030
90031@@ -371,6 +371,9 @@ __sigqueue_alloc(int sig, struct task_struct *t, gfp_t flags, int override_rlimi
90032 atomic_inc(&user->sigpending);
90033 rcu_read_unlock();
90034
90035+ if (!override_rlimit)
90036+ gr_learn_resource(t, RLIMIT_SIGPENDING, atomic_read(&user->sigpending), 1);
90037+
90038 if (override_rlimit ||
90039 atomic_read(&user->sigpending) <=
90040 task_rlimit(t, RLIMIT_SIGPENDING)) {
90041@@ -498,7 +501,7 @@ flush_signal_handlers(struct task_struct *t, int force_default)
90042
90043 int unhandled_signal(struct task_struct *tsk, int sig)
90044 {
90045- void __user *handler = tsk->sighand->action[sig-1].sa.sa_handler;
90046+ __sighandler_t handler = tsk->sighand->action[sig-1].sa.sa_handler;
90047 if (is_global_init(tsk))
90048 return 1;
90049 if (handler != SIG_IGN && handler != SIG_DFL)
90050@@ -818,6 +821,13 @@ static int check_kill_permission(int sig, struct siginfo *info,
90051 }
90052 }
90053
90054+ /* allow glibc communication via tgkill to other threads in our
90055+ thread group */
90056+ if ((info == SEND_SIG_NOINFO || info->si_code != SI_TKILL ||
90057+ sig != (SIGRTMIN+1) || task_tgid_vnr(t) != info->si_pid)
90058+ && gr_handle_signal(t, sig))
90059+ return -EPERM;
90060+
90061 return security_task_kill(t, info, sig, 0);
90062 }
90063
90064@@ -1201,7 +1211,7 @@ __group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p)
90065 return send_signal(sig, info, p, 1);
90066 }
90067
90068-static int
90069+int
90070 specific_send_sig_info(int sig, struct siginfo *info, struct task_struct *t)
90071 {
90072 return send_signal(sig, info, t, 0);
90073@@ -1238,6 +1248,7 @@ force_sig_info(int sig, struct siginfo *info, struct task_struct *t)
90074 unsigned long int flags;
90075 int ret, blocked, ignored;
90076 struct k_sigaction *action;
90077+ int is_unhandled = 0;
90078
90079 spin_lock_irqsave(&t->sighand->siglock, flags);
90080 action = &t->sighand->action[sig-1];
90081@@ -1252,9 +1263,18 @@ force_sig_info(int sig, struct siginfo *info, struct task_struct *t)
90082 }
90083 if (action->sa.sa_handler == SIG_DFL)
90084 t->signal->flags &= ~SIGNAL_UNKILLABLE;
90085+ if (action->sa.sa_handler == SIG_IGN || action->sa.sa_handler == SIG_DFL)
90086+ is_unhandled = 1;
90087 ret = specific_send_sig_info(sig, info, t);
90088 spin_unlock_irqrestore(&t->sighand->siglock, flags);
90089
90090+ /* only deal with unhandled signals, java etc trigger SIGSEGV during
90091+ normal operation */
90092+ if (is_unhandled) {
90093+ gr_log_signal(sig, !is_si_special(info) ? info->si_addr : NULL, t);
90094+ gr_handle_crash(t, sig);
90095+ }
90096+
90097 return ret;
90098 }
90099
90100@@ -1321,8 +1341,11 @@ int group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p)
90101 ret = check_kill_permission(sig, info, p);
90102 rcu_read_unlock();
90103
90104- if (!ret && sig)
90105+ if (!ret && sig) {
90106 ret = do_send_sig_info(sig, info, p, true);
90107+ if (!ret)
90108+ gr_log_signal(sig, !is_si_special(info) ? info->si_addr : NULL, p);
90109+ }
90110
90111 return ret;
90112 }
90113@@ -2928,7 +2951,15 @@ do_send_specific(pid_t tgid, pid_t pid, int sig, struct siginfo *info)
90114 int error = -ESRCH;
90115
90116 rcu_read_lock();
90117- p = find_task_by_vpid(pid);
90118+#ifdef CONFIG_GRKERNSEC_CHROOT_FINDTASK
90119+ /* allow glibc communication via tgkill to other threads in our
90120+ thread group */
90121+ if (grsec_enable_chroot_findtask && info->si_code == SI_TKILL &&
90122+ sig == (SIGRTMIN+1) && tgid == info->si_pid)
90123+ p = find_task_by_vpid_unrestricted(pid);
90124+ else
90125+#endif
90126+ p = find_task_by_vpid(pid);
90127 if (p && (tgid <= 0 || task_tgid_vnr(p) == tgid)) {
90128 error = check_kill_permission(sig, info, p);
90129 /*
90130@@ -3241,8 +3272,8 @@ COMPAT_SYSCALL_DEFINE2(sigaltstack,
90131 }
90132 seg = get_fs();
90133 set_fs(KERNEL_DS);
90134- ret = do_sigaltstack((stack_t __force __user *) (uss_ptr ? &uss : NULL),
90135- (stack_t __force __user *) &uoss,
90136+ ret = do_sigaltstack((stack_t __force_user *) (uss_ptr ? &uss : NULL),
90137+ (stack_t __force_user *) &uoss,
90138 compat_user_stack_pointer());
90139 set_fs(seg);
90140 if (ret >= 0 && uoss_ptr) {
90141diff --git a/kernel/smpboot.c b/kernel/smpboot.c
90142index eb89e18..a4e6792 100644
90143--- a/kernel/smpboot.c
90144+++ b/kernel/smpboot.c
90145@@ -288,7 +288,7 @@ int smpboot_register_percpu_thread(struct smp_hotplug_thread *plug_thread)
90146 }
90147 smpboot_unpark_thread(plug_thread, cpu);
90148 }
90149- list_add(&plug_thread->list, &hotplug_threads);
90150+ pax_list_add(&plug_thread->list, &hotplug_threads);
90151 out:
90152 mutex_unlock(&smpboot_threads_lock);
90153 return ret;
90154@@ -305,7 +305,7 @@ void smpboot_unregister_percpu_thread(struct smp_hotplug_thread *plug_thread)
90155 {
90156 get_online_cpus();
90157 mutex_lock(&smpboot_threads_lock);
90158- list_del(&plug_thread->list);
90159+ pax_list_del(&plug_thread->list);
90160 smpboot_destroy_threads(plug_thread);
90161 mutex_unlock(&smpboot_threads_lock);
90162 put_online_cpus();
90163diff --git a/kernel/softirq.c b/kernel/softirq.c
90164index 92f24f5..db41501 100644
90165--- a/kernel/softirq.c
90166+++ b/kernel/softirq.c
90167@@ -53,7 +53,7 @@ irq_cpustat_t irq_stat[NR_CPUS] ____cacheline_aligned;
90168 EXPORT_SYMBOL(irq_stat);
90169 #endif
90170
90171-static struct softirq_action softirq_vec[NR_SOFTIRQS] __cacheline_aligned_in_smp;
90172+static struct softirq_action softirq_vec[NR_SOFTIRQS] __read_only __aligned(PAGE_SIZE);
90173
90174 DEFINE_PER_CPU(struct task_struct *, ksoftirqd);
90175
90176@@ -268,7 +268,7 @@ restart:
90177 kstat_incr_softirqs_this_cpu(vec_nr);
90178
90179 trace_softirq_entry(vec_nr);
90180- h->action(h);
90181+ h->action();
90182 trace_softirq_exit(vec_nr);
90183 if (unlikely(prev_count != preempt_count())) {
90184 pr_err("huh, entered softirq %u %s %p with preempt_count %08x, exited with %08x?\n",
90185@@ -428,7 +428,7 @@ void __raise_softirq_irqoff(unsigned int nr)
90186 or_softirq_pending(1UL << nr);
90187 }
90188
90189-void open_softirq(int nr, void (*action)(struct softirq_action *))
90190+void __init open_softirq(int nr, void (*action)(void))
90191 {
90192 softirq_vec[nr].action = action;
90193 }
90194@@ -480,7 +480,7 @@ void __tasklet_hi_schedule_first(struct tasklet_struct *t)
90195 }
90196 EXPORT_SYMBOL(__tasklet_hi_schedule_first);
90197
90198-static void tasklet_action(struct softirq_action *a)
90199+static void tasklet_action(void)
90200 {
90201 struct tasklet_struct *list;
90202
90203@@ -516,7 +516,7 @@ static void tasklet_action(struct softirq_action *a)
90204 }
90205 }
90206
90207-static void tasklet_hi_action(struct softirq_action *a)
90208+static __latent_entropy void tasklet_hi_action(void)
90209 {
90210 struct tasklet_struct *list;
90211
90212@@ -743,7 +743,7 @@ static struct notifier_block cpu_nfb = {
90213 .notifier_call = cpu_callback
90214 };
90215
90216-static struct smp_hotplug_thread softirq_threads = {
90217+static struct smp_hotplug_thread softirq_threads __read_only = {
90218 .store = &ksoftirqd,
90219 .thread_should_run = ksoftirqd_should_run,
90220 .thread_fn = run_ksoftirqd,
90221diff --git a/kernel/sys.c b/kernel/sys.c
90222index fba0f29..84400e2 100644
90223--- a/kernel/sys.c
90224+++ b/kernel/sys.c
90225@@ -148,6 +148,12 @@ static int set_one_prio(struct task_struct *p, int niceval, int error)
90226 error = -EACCES;
90227 goto out;
90228 }
90229+
90230+ if (gr_handle_chroot_setpriority(p, niceval)) {
90231+ error = -EACCES;
90232+ goto out;
90233+ }
90234+
90235 no_nice = security_task_setnice(p, niceval);
90236 if (no_nice) {
90237 error = no_nice;
90238@@ -351,6 +357,9 @@ SYSCALL_DEFINE2(setregid, gid_t, rgid, gid_t, egid)
90239 goto error;
90240 }
90241
90242+ if (gr_check_group_change(new->gid, new->egid, INVALID_GID))
90243+ goto error;
90244+
90245 if (rgid != (gid_t) -1 ||
90246 (egid != (gid_t) -1 && !gid_eq(kegid, old->gid)))
90247 new->sgid = new->egid;
90248@@ -386,6 +395,10 @@ SYSCALL_DEFINE1(setgid, gid_t, gid)
90249 old = current_cred();
90250
90251 retval = -EPERM;
90252+
90253+ if (gr_check_group_change(kgid, kgid, kgid))
90254+ goto error;
90255+
90256 if (ns_capable(old->user_ns, CAP_SETGID))
90257 new->gid = new->egid = new->sgid = new->fsgid = kgid;
90258 else if (gid_eq(kgid, old->gid) || gid_eq(kgid, old->sgid))
90259@@ -403,7 +416,7 @@ error:
90260 /*
90261 * change the user struct in a credentials set to match the new UID
90262 */
90263-static int set_user(struct cred *new)
90264+int set_user(struct cred *new)
90265 {
90266 struct user_struct *new_user;
90267
90268@@ -483,6 +496,9 @@ SYSCALL_DEFINE2(setreuid, uid_t, ruid, uid_t, euid)
90269 goto error;
90270 }
90271
90272+ if (gr_check_user_change(new->uid, new->euid, INVALID_UID))
90273+ goto error;
90274+
90275 if (!uid_eq(new->uid, old->uid)) {
90276 retval = set_user(new);
90277 if (retval < 0)
90278@@ -533,6 +549,12 @@ SYSCALL_DEFINE1(setuid, uid_t, uid)
90279 old = current_cred();
90280
90281 retval = -EPERM;
90282+
90283+ if (gr_check_crash_uid(kuid))
90284+ goto error;
90285+ if (gr_check_user_change(kuid, kuid, kuid))
90286+ goto error;
90287+
90288 if (ns_capable(old->user_ns, CAP_SETUID)) {
90289 new->suid = new->uid = kuid;
90290 if (!uid_eq(kuid, old->uid)) {
90291@@ -602,6 +624,9 @@ SYSCALL_DEFINE3(setresuid, uid_t, ruid, uid_t, euid, uid_t, suid)
90292 goto error;
90293 }
90294
90295+ if (gr_check_user_change(kruid, keuid, INVALID_UID))
90296+ goto error;
90297+
90298 if (ruid != (uid_t) -1) {
90299 new->uid = kruid;
90300 if (!uid_eq(kruid, old->uid)) {
90301@@ -684,6 +709,9 @@ SYSCALL_DEFINE3(setresgid, gid_t, rgid, gid_t, egid, gid_t, sgid)
90302 goto error;
90303 }
90304
90305+ if (gr_check_group_change(krgid, kegid, INVALID_GID))
90306+ goto error;
90307+
90308 if (rgid != (gid_t) -1)
90309 new->gid = krgid;
90310 if (egid != (gid_t) -1)
90311@@ -745,12 +773,16 @@ SYSCALL_DEFINE1(setfsuid, uid_t, uid)
90312 uid_eq(kuid, old->suid) || uid_eq(kuid, old->fsuid) ||
90313 ns_capable(old->user_ns, CAP_SETUID)) {
90314 if (!uid_eq(kuid, old->fsuid)) {
90315+ if (gr_check_user_change(INVALID_UID, INVALID_UID, kuid))
90316+ goto error;
90317+
90318 new->fsuid = kuid;
90319 if (security_task_fix_setuid(new, old, LSM_SETID_FS) == 0)
90320 goto change_okay;
90321 }
90322 }
90323
90324+error:
90325 abort_creds(new);
90326 return old_fsuid;
90327
90328@@ -783,12 +815,16 @@ SYSCALL_DEFINE1(setfsgid, gid_t, gid)
90329 if (gid_eq(kgid, old->gid) || gid_eq(kgid, old->egid) ||
90330 gid_eq(kgid, old->sgid) || gid_eq(kgid, old->fsgid) ||
90331 ns_capable(old->user_ns, CAP_SETGID)) {
90332+ if (gr_check_group_change(INVALID_GID, INVALID_GID, kgid))
90333+ goto error;
90334+
90335 if (!gid_eq(kgid, old->fsgid)) {
90336 new->fsgid = kgid;
90337 goto change_okay;
90338 }
90339 }
90340
90341+error:
90342 abort_creds(new);
90343 return old_fsgid;
90344
90345@@ -1167,19 +1203,19 @@ SYSCALL_DEFINE1(olduname, struct oldold_utsname __user *, name)
90346 return -EFAULT;
90347
90348 down_read(&uts_sem);
90349- error = __copy_to_user(&name->sysname, &utsname()->sysname,
90350+ error = __copy_to_user(name->sysname, &utsname()->sysname,
90351 __OLD_UTS_LEN);
90352 error |= __put_user(0, name->sysname + __OLD_UTS_LEN);
90353- error |= __copy_to_user(&name->nodename, &utsname()->nodename,
90354+ error |= __copy_to_user(name->nodename, &utsname()->nodename,
90355 __OLD_UTS_LEN);
90356 error |= __put_user(0, name->nodename + __OLD_UTS_LEN);
90357- error |= __copy_to_user(&name->release, &utsname()->release,
90358+ error |= __copy_to_user(name->release, &utsname()->release,
90359 __OLD_UTS_LEN);
90360 error |= __put_user(0, name->release + __OLD_UTS_LEN);
90361- error |= __copy_to_user(&name->version, &utsname()->version,
90362+ error |= __copy_to_user(name->version, &utsname()->version,
90363 __OLD_UTS_LEN);
90364 error |= __put_user(0, name->version + __OLD_UTS_LEN);
90365- error |= __copy_to_user(&name->machine, &utsname()->machine,
90366+ error |= __copy_to_user(name->machine, &utsname()->machine,
90367 __OLD_UTS_LEN);
90368 error |= __put_user(0, name->machine + __OLD_UTS_LEN);
90369 up_read(&uts_sem);
90370@@ -1381,6 +1417,13 @@ int do_prlimit(struct task_struct *tsk, unsigned int resource,
90371 */
90372 new_rlim->rlim_cur = 1;
90373 }
90374+ /* Handle the case where a fork and setuid occur and then RLIMIT_NPROC
90375+ is changed to a lower value. Since tasks can be created by the same
90376+ user in between this limit change and an execve by this task, force
90377+ a recheck only for this task by setting PF_NPROC_EXCEEDED
90378+ */
90379+ if (resource == RLIMIT_NPROC && tsk->real_cred->user != INIT_USER)
90380+ tsk->flags |= PF_NPROC_EXCEEDED;
90381 }
90382 if (!retval) {
90383 if (old_rlim)
90384diff --git a/kernel/sysctl.c b/kernel/sysctl.c
90385index 74f5b58..65ba165 100644
90386--- a/kernel/sysctl.c
90387+++ b/kernel/sysctl.c
90388@@ -94,7 +94,6 @@
90389
90390
90391 #if defined(CONFIG_SYSCTL)
90392-
90393 /* External variables not in a header file. */
90394 extern int max_threads;
90395 extern int suid_dumpable;
90396@@ -115,19 +114,20 @@ extern int sysctl_nr_trim_pages;
90397
90398 /* Constants used for minimum and maximum */
90399 #ifdef CONFIG_LOCKUP_DETECTOR
90400-static int sixty = 60;
90401+static int sixty __read_only = 60;
90402 #endif
90403
90404-static int __maybe_unused neg_one = -1;
90405+static int __maybe_unused neg_one __read_only = -1;
90406
90407-static int zero;
90408-static int __maybe_unused one = 1;
90409-static int __maybe_unused two = 2;
90410-static int __maybe_unused four = 4;
90411-static unsigned long one_ul = 1;
90412-static int one_hundred = 100;
90413+static int zero __read_only = 0;
90414+static int __maybe_unused one __read_only = 1;
90415+static int __maybe_unused two __read_only = 2;
90416+static int __maybe_unused three __read_only = 3;
90417+static int __maybe_unused four __read_only = 4;
90418+static unsigned long one_ul __read_only = 1;
90419+static int one_hundred __read_only = 100;
90420 #ifdef CONFIG_PRINTK
90421-static int ten_thousand = 10000;
90422+static int ten_thousand __read_only = 10000;
90423 #endif
90424
90425 /* this is needed for the proc_doulongvec_minmax of vm_dirty_bytes */
90426@@ -179,10 +179,8 @@ static int proc_taint(struct ctl_table *table, int write,
90427 void __user *buffer, size_t *lenp, loff_t *ppos);
90428 #endif
90429
90430-#ifdef CONFIG_PRINTK
90431 static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
90432 void __user *buffer, size_t *lenp, loff_t *ppos);
90433-#endif
90434
90435 static int proc_dointvec_minmax_coredump(struct ctl_table *table, int write,
90436 void __user *buffer, size_t *lenp, loff_t *ppos);
90437@@ -213,6 +211,8 @@ static int sysrq_sysctl_handler(ctl_table *table, int write,
90438
90439 #endif
90440
90441+extern struct ctl_table grsecurity_table[];
90442+
90443 static struct ctl_table kern_table[];
90444 static struct ctl_table vm_table[];
90445 static struct ctl_table fs_table[];
90446@@ -227,6 +227,20 @@ extern struct ctl_table epoll_table[];
90447 int sysctl_legacy_va_layout;
90448 #endif
90449
90450+#ifdef CONFIG_PAX_SOFTMODE
90451+static ctl_table pax_table[] = {
90452+ {
90453+ .procname = "softmode",
90454+ .data = &pax_softmode,
90455+ .maxlen = sizeof(unsigned int),
90456+ .mode = 0600,
90457+ .proc_handler = &proc_dointvec,
90458+ },
90459+
90460+ { }
90461+};
90462+#endif
90463+
90464 /* The default sysctl tables: */
90465
90466 static struct ctl_table sysctl_base_table[] = {
90467@@ -275,6 +289,22 @@ static int max_extfrag_threshold = 1000;
90468 #endif
90469
90470 static struct ctl_table kern_table[] = {
90471+#if defined(CONFIG_GRKERNSEC_SYSCTL) || defined(CONFIG_GRKERNSEC_ROFS)
90472+ {
90473+ .procname = "grsecurity",
90474+ .mode = 0500,
90475+ .child = grsecurity_table,
90476+ },
90477+#endif
90478+
90479+#ifdef CONFIG_PAX_SOFTMODE
90480+ {
90481+ .procname = "pax",
90482+ .mode = 0500,
90483+ .child = pax_table,
90484+ },
90485+#endif
90486+
90487 {
90488 .procname = "sched_child_runs_first",
90489 .data = &sysctl_sched_child_runs_first,
90490@@ -630,7 +660,7 @@ static struct ctl_table kern_table[] = {
90491 .data = &modprobe_path,
90492 .maxlen = KMOD_PATH_LEN,
90493 .mode = 0644,
90494- .proc_handler = proc_dostring,
90495+ .proc_handler = proc_dostring_modpriv,
90496 },
90497 {
90498 .procname = "modules_disabled",
90499@@ -797,16 +827,20 @@ static struct ctl_table kern_table[] = {
90500 .extra1 = &zero,
90501 .extra2 = &one,
90502 },
90503+#endif
90504 {
90505 .procname = "kptr_restrict",
90506 .data = &kptr_restrict,
90507 .maxlen = sizeof(int),
90508 .mode = 0644,
90509 .proc_handler = proc_dointvec_minmax_sysadmin,
90510+#ifdef CONFIG_GRKERNSEC_HIDESYM
90511+ .extra1 = &two,
90512+#else
90513 .extra1 = &zero,
90514+#endif
90515 .extra2 = &two,
90516 },
90517-#endif
90518 {
90519 .procname = "ngroups_max",
90520 .data = &ngroups_max,
90521@@ -1051,10 +1085,17 @@ static struct ctl_table kern_table[] = {
90522 */
90523 {
90524 .procname = "perf_event_paranoid",
90525- .data = &sysctl_perf_event_paranoid,
90526- .maxlen = sizeof(sysctl_perf_event_paranoid),
90527+ .data = &sysctl_perf_event_legitimately_concerned,
90528+ .maxlen = sizeof(sysctl_perf_event_legitimately_concerned),
90529 .mode = 0644,
90530- .proc_handler = proc_dointvec,
90531+ /* go ahead, be a hero */
90532+ .proc_handler = proc_dointvec_minmax_sysadmin,
90533+ .extra1 = &neg_one,
90534+#ifdef CONFIG_GRKERNSEC_PERF_HARDEN
90535+ .extra2 = &three,
90536+#else
90537+ .extra2 = &two,
90538+#endif
90539 },
90540 {
90541 .procname = "perf_event_mlock_kb",
90542@@ -1316,6 +1357,13 @@ static struct ctl_table vm_table[] = {
90543 .proc_handler = proc_dointvec_minmax,
90544 .extra1 = &zero,
90545 },
90546+ {
90547+ .procname = "heap_stack_gap",
90548+ .data = &sysctl_heap_stack_gap,
90549+ .maxlen = sizeof(sysctl_heap_stack_gap),
90550+ .mode = 0644,
90551+ .proc_handler = proc_doulongvec_minmax,
90552+ },
90553 #else
90554 {
90555 .procname = "nr_trim_pages",
90556@@ -1780,6 +1828,16 @@ int proc_dostring(struct ctl_table *table, int write,
90557 buffer, lenp, ppos);
90558 }
90559
90560+int proc_dostring_modpriv(struct ctl_table *table, int write,
90561+ void __user *buffer, size_t *lenp, loff_t *ppos)
90562+{
90563+ if (write && !capable(CAP_SYS_MODULE))
90564+ return -EPERM;
90565+
90566+ return _proc_do_string(table->data, table->maxlen, write,
90567+ buffer, lenp, ppos);
90568+}
90569+
90570 static size_t proc_skip_spaces(char **buf)
90571 {
90572 size_t ret;
90573@@ -1885,6 +1943,8 @@ static int proc_put_long(void __user **buf, size_t *size, unsigned long val,
90574 len = strlen(tmp);
90575 if (len > *size)
90576 len = *size;
90577+ if (len > sizeof(tmp))
90578+ len = sizeof(tmp);
90579 if (copy_to_user(*buf, tmp, len))
90580 return -EFAULT;
90581 *size -= len;
90582@@ -2049,7 +2109,7 @@ int proc_dointvec(struct ctl_table *table, int write,
90583 static int proc_taint(struct ctl_table *table, int write,
90584 void __user *buffer, size_t *lenp, loff_t *ppos)
90585 {
90586- struct ctl_table t;
90587+ ctl_table_no_const t;
90588 unsigned long tmptaint = get_taint();
90589 int err;
90590
90591@@ -2077,7 +2137,6 @@ static int proc_taint(struct ctl_table *table, int write,
90592 return err;
90593 }
90594
90595-#ifdef CONFIG_PRINTK
90596 static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
90597 void __user *buffer, size_t *lenp, loff_t *ppos)
90598 {
90599@@ -2086,7 +2145,6 @@ static int proc_dointvec_minmax_sysadmin(struct ctl_table *table, int write,
90600
90601 return proc_dointvec_minmax(table, write, buffer, lenp, ppos);
90602 }
90603-#endif
90604
90605 struct do_proc_dointvec_minmax_conv_param {
90606 int *min;
90607@@ -2633,6 +2691,12 @@ int proc_dostring(struct ctl_table *table, int write,
90608 return -ENOSYS;
90609 }
90610
90611+int proc_dostring_modpriv(struct ctl_table *table, int write,
90612+ void __user *buffer, size_t *lenp, loff_t *ppos)
90613+{
90614+ return -ENOSYS;
90615+}
90616+
90617 int proc_dointvec(struct ctl_table *table, int write,
90618 void __user *buffer, size_t *lenp, loff_t *ppos)
90619 {
90620@@ -2689,5 +2753,6 @@ EXPORT_SYMBOL(proc_dointvec_minmax);
90621 EXPORT_SYMBOL(proc_dointvec_userhz_jiffies);
90622 EXPORT_SYMBOL(proc_dointvec_ms_jiffies);
90623 EXPORT_SYMBOL(proc_dostring);
90624+EXPORT_SYMBOL(proc_dostring_modpriv);
90625 EXPORT_SYMBOL(proc_doulongvec_minmax);
90626 EXPORT_SYMBOL(proc_doulongvec_ms_jiffies_minmax);
90627diff --git a/kernel/taskstats.c b/kernel/taskstats.c
90628index 13d2f7c..c93d0b0 100644
90629--- a/kernel/taskstats.c
90630+++ b/kernel/taskstats.c
90631@@ -28,9 +28,12 @@
90632 #include <linux/fs.h>
90633 #include <linux/file.h>
90634 #include <linux/pid_namespace.h>
90635+#include <linux/grsecurity.h>
90636 #include <net/genetlink.h>
90637 #include <linux/atomic.h>
90638
90639+extern int gr_is_taskstats_denied(int pid);
90640+
90641 /*
90642 * Maximum length of a cpumask that can be specified in
90643 * the TASKSTATS_CMD_ATTR_REGISTER/DEREGISTER_CPUMASK attribute
90644@@ -576,6 +579,9 @@ err:
90645
90646 static int taskstats_user_cmd(struct sk_buff *skb, struct genl_info *info)
90647 {
90648+ if (gr_is_taskstats_denied(current->pid))
90649+ return -EACCES;
90650+
90651 if (info->attrs[TASKSTATS_CMD_ATTR_REGISTER_CPUMASK])
90652 return cmd_attr_register_cpumask(info);
90653 else if (info->attrs[TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK])
90654diff --git a/kernel/time.c b/kernel/time.c
90655index 7c7964c..2a0d412 100644
90656--- a/kernel/time.c
90657+++ b/kernel/time.c
90658@@ -172,6 +172,11 @@ int do_sys_settimeofday(const struct timespec *tv, const struct timezone *tz)
90659 return error;
90660
90661 if (tz) {
90662+ /* we log in do_settimeofday called below, so don't log twice
90663+ */
90664+ if (!tv)
90665+ gr_log_timechange();
90666+
90667 sys_tz = *tz;
90668 update_vsyscall_tz();
90669 if (firsttime) {
90670diff --git a/kernel/time/alarmtimer.c b/kernel/time/alarmtimer.c
90671index 88c9c65..7497ebc 100644
90672--- a/kernel/time/alarmtimer.c
90673+++ b/kernel/time/alarmtimer.c
90674@@ -795,7 +795,7 @@ static int __init alarmtimer_init(void)
90675 struct platform_device *pdev;
90676 int error = 0;
90677 int i;
90678- struct k_clock alarm_clock = {
90679+ static struct k_clock alarm_clock = {
90680 .clock_getres = alarm_clock_getres,
90681 .clock_get = alarm_clock_get,
90682 .timer_create = alarm_timer_create,
90683diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
90684index f7df8ea..0810193 100644
90685--- a/kernel/time/timekeeping.c
90686+++ b/kernel/time/timekeeping.c
90687@@ -15,6 +15,7 @@
90688 #include <linux/init.h>
90689 #include <linux/mm.h>
90690 #include <linux/sched.h>
90691+#include <linux/grsecurity.h>
90692 #include <linux/syscore_ops.h>
90693 #include <linux/clocksource.h>
90694 #include <linux/jiffies.h>
90695@@ -502,6 +503,8 @@ int do_settimeofday(const struct timespec *tv)
90696 if (!timespec_valid_strict(tv))
90697 return -EINVAL;
90698
90699+ gr_log_timechange();
90700+
90701 raw_spin_lock_irqsave(&timekeeper_lock, flags);
90702 write_seqcount_begin(&timekeeper_seq);
90703
90704diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c
90705index 61ed862..3b52c65 100644
90706--- a/kernel/time/timer_list.c
90707+++ b/kernel/time/timer_list.c
90708@@ -45,12 +45,16 @@ DECLARE_PER_CPU(struct hrtimer_cpu_base, hrtimer_bases);
90709
90710 static void print_name_offset(struct seq_file *m, void *sym)
90711 {
90712+#ifdef CONFIG_GRKERNSEC_HIDESYM
90713+ SEQ_printf(m, "<%p>", NULL);
90714+#else
90715 char symname[KSYM_NAME_LEN];
90716
90717 if (lookup_symbol_name((unsigned long)sym, symname) < 0)
90718 SEQ_printf(m, "<%pK>", sym);
90719 else
90720 SEQ_printf(m, "%s", symname);
90721+#endif
90722 }
90723
90724 static void
90725@@ -119,7 +123,11 @@ next_one:
90726 static void
90727 print_base(struct seq_file *m, struct hrtimer_clock_base *base, u64 now)
90728 {
90729+#ifdef CONFIG_GRKERNSEC_HIDESYM
90730+ SEQ_printf(m, " .base: %p\n", NULL);
90731+#else
90732 SEQ_printf(m, " .base: %pK\n", base);
90733+#endif
90734 SEQ_printf(m, " .index: %d\n",
90735 base->index);
90736 SEQ_printf(m, " .resolution: %Lu nsecs\n",
90737@@ -362,7 +370,11 @@ static int __init init_timer_list_procfs(void)
90738 {
90739 struct proc_dir_entry *pe;
90740
90741+#ifdef CONFIG_GRKERNSEC_PROC_ADD
90742+ pe = proc_create("timer_list", 0400, NULL, &timer_list_fops);
90743+#else
90744 pe = proc_create("timer_list", 0444, NULL, &timer_list_fops);
90745+#endif
90746 if (!pe)
90747 return -ENOMEM;
90748 return 0;
90749diff --git a/kernel/time/timer_stats.c b/kernel/time/timer_stats.c
90750index 1fb08f2..ca4bb1e 100644
90751--- a/kernel/time/timer_stats.c
90752+++ b/kernel/time/timer_stats.c
90753@@ -116,7 +116,7 @@ static ktime_t time_start, time_stop;
90754 static unsigned long nr_entries;
90755 static struct entry entries[MAX_ENTRIES];
90756
90757-static atomic_t overflow_count;
90758+static atomic_unchecked_t overflow_count;
90759
90760 /*
90761 * The entries are in a hash-table, for fast lookup:
90762@@ -140,7 +140,7 @@ static void reset_entries(void)
90763 nr_entries = 0;
90764 memset(entries, 0, sizeof(entries));
90765 memset(tstat_hash_table, 0, sizeof(tstat_hash_table));
90766- atomic_set(&overflow_count, 0);
90767+ atomic_set_unchecked(&overflow_count, 0);
90768 }
90769
90770 static struct entry *alloc_entry(void)
90771@@ -261,7 +261,7 @@ void timer_stats_update_stats(void *timer, pid_t pid, void *startf,
90772 if (likely(entry))
90773 entry->count++;
90774 else
90775- atomic_inc(&overflow_count);
90776+ atomic_inc_unchecked(&overflow_count);
90777
90778 out_unlock:
90779 raw_spin_unlock_irqrestore(lock, flags);
90780@@ -269,12 +269,16 @@ void timer_stats_update_stats(void *timer, pid_t pid, void *startf,
90781
90782 static void print_name_offset(struct seq_file *m, unsigned long addr)
90783 {
90784+#ifdef CONFIG_GRKERNSEC_HIDESYM
90785+ seq_printf(m, "<%p>", NULL);
90786+#else
90787 char symname[KSYM_NAME_LEN];
90788
90789 if (lookup_symbol_name(addr, symname) < 0)
90790- seq_printf(m, "<%p>", (void *)addr);
90791+ seq_printf(m, "<%pK>", (void *)addr);
90792 else
90793 seq_printf(m, "%s", symname);
90794+#endif
90795 }
90796
90797 static int tstats_show(struct seq_file *m, void *v)
90798@@ -300,8 +304,8 @@ static int tstats_show(struct seq_file *m, void *v)
90799
90800 seq_puts(m, "Timer Stats Version: v0.3\n");
90801 seq_printf(m, "Sample period: %ld.%03ld s\n", period.tv_sec, ms);
90802- if (atomic_read(&overflow_count))
90803- seq_printf(m, "Overflow: %d entries\n", atomic_read(&overflow_count));
90804+ if (atomic_read_unchecked(&overflow_count))
90805+ seq_printf(m, "Overflow: %d entries\n", atomic_read_unchecked(&overflow_count));
90806 seq_printf(m, "Collection: %s\n", timer_stats_active ? "active" : "inactive");
90807
90808 for (i = 0; i < nr_entries; i++) {
90809@@ -417,7 +421,11 @@ static int __init init_tstats_procfs(void)
90810 {
90811 struct proc_dir_entry *pe;
90812
90813+#ifdef CONFIG_GRKERNSEC_PROC_ADD
90814+ pe = proc_create("timer_stats", 0600, NULL, &tstats_fops);
90815+#else
90816 pe = proc_create("timer_stats", 0644, NULL, &tstats_fops);
90817+#endif
90818 if (!pe)
90819 return -ENOMEM;
90820 return 0;
90821diff --git a/kernel/timer.c b/kernel/timer.c
90822index 3bb01a3..0e7760e 100644
90823--- a/kernel/timer.c
90824+++ b/kernel/timer.c
90825@@ -1393,7 +1393,7 @@ void update_process_times(int user_tick)
90826 /*
90827 * This function runs timers and the timer-tq in bottom half context.
90828 */
90829-static void run_timer_softirq(struct softirq_action *h)
90830+static __latent_entropy void run_timer_softirq(void)
90831 {
90832 struct tvec_base *base = __this_cpu_read(tvec_bases);
90833
90834@@ -1456,7 +1456,7 @@ static void process_timeout(unsigned long __data)
90835 *
90836 * In all cases the return value is guaranteed to be non-negative.
90837 */
90838-signed long __sched schedule_timeout(signed long timeout)
90839+signed long __sched __intentional_overflow(-1) schedule_timeout(signed long timeout)
90840 {
90841 struct timer_list timer;
90842 unsigned long expire;
90843diff --git a/kernel/torture.c b/kernel/torture.c
90844index acc9afc..4f9eb49 100644
90845--- a/kernel/torture.c
90846+++ b/kernel/torture.c
90847@@ -489,7 +489,7 @@ static int torture_shutdown_notify(struct notifier_block *unused1,
90848 mutex_lock(&fullstop_mutex);
90849 if (ACCESS_ONCE(fullstop) == FULLSTOP_DONTSTOP) {
90850 VERBOSE_TOROUT_STRING("Unscheduled system shutdown detected");
90851- ACCESS_ONCE(fullstop) = FULLSTOP_SHUTDOWN;
90852+ ACCESS_ONCE_RW(fullstop) = FULLSTOP_SHUTDOWN;
90853 } else {
90854 pr_warn("Concurrent rmmod and shutdown illegal!\n");
90855 }
90856@@ -551,11 +551,11 @@ static int torture_stutter(void *arg)
90857 do {
90858 if (!torture_must_stop()) {
90859 schedule_timeout_interruptible(stutter);
90860- ACCESS_ONCE(stutter_pause_test) = 1;
90861+ ACCESS_ONCE_RW(stutter_pause_test) = 1;
90862 }
90863 if (!torture_must_stop())
90864 schedule_timeout_interruptible(stutter);
90865- ACCESS_ONCE(stutter_pause_test) = 0;
90866+ ACCESS_ONCE_RW(stutter_pause_test) = 0;
90867 torture_shutdown_absorb("torture_stutter");
90868 } while (!torture_must_stop());
90869 torture_kthread_stopping("torture_stutter");
90870@@ -636,7 +636,7 @@ bool torture_cleanup(void)
90871 schedule_timeout_uninterruptible(10);
90872 return true;
90873 }
90874- ACCESS_ONCE(fullstop) = FULLSTOP_RMMOD;
90875+ ACCESS_ONCE_RW(fullstop) = FULLSTOP_RMMOD;
90876 mutex_unlock(&fullstop_mutex);
90877 torture_shutdown_cleanup();
90878 torture_shuffle_cleanup();
90879diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
90880index c1bd4ad..4b861dc 100644
90881--- a/kernel/trace/blktrace.c
90882+++ b/kernel/trace/blktrace.c
90883@@ -328,7 +328,7 @@ static ssize_t blk_dropped_read(struct file *filp, char __user *buffer,
90884 struct blk_trace *bt = filp->private_data;
90885 char buf[16];
90886
90887- snprintf(buf, sizeof(buf), "%u\n", atomic_read(&bt->dropped));
90888+ snprintf(buf, sizeof(buf), "%u\n", atomic_read_unchecked(&bt->dropped));
90889
90890 return simple_read_from_buffer(buffer, count, ppos, buf, strlen(buf));
90891 }
90892@@ -386,7 +386,7 @@ static int blk_subbuf_start_callback(struct rchan_buf *buf, void *subbuf,
90893 return 1;
90894
90895 bt = buf->chan->private_data;
90896- atomic_inc(&bt->dropped);
90897+ atomic_inc_unchecked(&bt->dropped);
90898 return 0;
90899 }
90900
90901@@ -487,7 +487,7 @@ int do_blk_trace_setup(struct request_queue *q, char *name, dev_t dev,
90902
90903 bt->dir = dir;
90904 bt->dev = dev;
90905- atomic_set(&bt->dropped, 0);
90906+ atomic_set_unchecked(&bt->dropped, 0);
90907 INIT_LIST_HEAD(&bt->running_list);
90908
90909 ret = -EIO;
90910diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
90911index 4a54a25..7ca9c89 100644
90912--- a/kernel/trace/ftrace.c
90913+++ b/kernel/trace/ftrace.c
90914@@ -1960,12 +1960,17 @@ ftrace_code_disable(struct module *mod, struct dyn_ftrace *rec)
90915 if (unlikely(ftrace_disabled))
90916 return 0;
90917
90918+ ret = ftrace_arch_code_modify_prepare();
90919+ FTRACE_WARN_ON(ret);
90920+ if (ret)
90921+ return 0;
90922+
90923 ret = ftrace_make_nop(mod, rec, MCOUNT_ADDR);
90924+ FTRACE_WARN_ON(ftrace_arch_code_modify_post_process());
90925 if (ret) {
90926 ftrace_bug(ret, ip);
90927- return 0;
90928 }
90929- return 1;
90930+ return ret ? 0 : 1;
90931 }
90932
90933 /*
90934@@ -4195,8 +4200,10 @@ static int ftrace_process_locs(struct module *mod,
90935 if (!count)
90936 return 0;
90937
90938+ pax_open_kernel();
90939 sort(start, count, sizeof(*start),
90940 ftrace_cmp_ips, ftrace_swap_ips);
90941+ pax_close_kernel();
90942
90943 start_pg = ftrace_allocate_pages(count);
90944 if (!start_pg)
90945@@ -4908,8 +4915,6 @@ ftrace_enable_sysctl(struct ctl_table *table, int write,
90946 #ifdef CONFIG_FUNCTION_GRAPH_TRACER
90947
90948 static int ftrace_graph_active;
90949-static struct notifier_block ftrace_suspend_notifier;
90950-
90951 int ftrace_graph_entry_stub(struct ftrace_graph_ent *trace)
90952 {
90953 return 0;
90954@@ -5085,6 +5090,10 @@ static void update_function_graph_func(void)
90955 ftrace_graph_entry = ftrace_graph_entry_test;
90956 }
90957
90958+static struct notifier_block ftrace_suspend_notifier = {
90959+ .notifier_call = ftrace_suspend_notifier_call
90960+};
90961+
90962 int register_ftrace_graph(trace_func_graph_ret_t retfunc,
90963 trace_func_graph_ent_t entryfunc)
90964 {
90965@@ -5098,7 +5107,6 @@ int register_ftrace_graph(trace_func_graph_ret_t retfunc,
90966 goto out;
90967 }
90968
90969- ftrace_suspend_notifier.notifier_call = ftrace_suspend_notifier_call;
90970 register_pm_notifier(&ftrace_suspend_notifier);
90971
90972 ftrace_graph_active++;
90973diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
90974index c634868..00d0d19 100644
90975--- a/kernel/trace/ring_buffer.c
90976+++ b/kernel/trace/ring_buffer.c
90977@@ -352,9 +352,9 @@ struct buffer_data_page {
90978 */
90979 struct buffer_page {
90980 struct list_head list; /* list of buffer pages */
90981- local_t write; /* index for next write */
90982+ local_unchecked_t write; /* index for next write */
90983 unsigned read; /* index for next read */
90984- local_t entries; /* entries on this page */
90985+ local_unchecked_t entries; /* entries on this page */
90986 unsigned long real_end; /* real end of data */
90987 struct buffer_data_page *page; /* Actual data page */
90988 };
90989@@ -473,8 +473,8 @@ struct ring_buffer_per_cpu {
90990 unsigned long last_overrun;
90991 local_t entries_bytes;
90992 local_t entries;
90993- local_t overrun;
90994- local_t commit_overrun;
90995+ local_unchecked_t overrun;
90996+ local_unchecked_t commit_overrun;
90997 local_t dropped_events;
90998 local_t committing;
90999 local_t commits;
91000@@ -992,8 +992,8 @@ static int rb_tail_page_update(struct ring_buffer_per_cpu *cpu_buffer,
91001 *
91002 * We add a counter to the write field to denote this.
91003 */
91004- old_write = local_add_return(RB_WRITE_INTCNT, &next_page->write);
91005- old_entries = local_add_return(RB_WRITE_INTCNT, &next_page->entries);
91006+ old_write = local_add_return_unchecked(RB_WRITE_INTCNT, &next_page->write);
91007+ old_entries = local_add_return_unchecked(RB_WRITE_INTCNT, &next_page->entries);
91008
91009 /*
91010 * Just make sure we have seen our old_write and synchronize
91011@@ -1021,8 +1021,8 @@ static int rb_tail_page_update(struct ring_buffer_per_cpu *cpu_buffer,
91012 * cmpxchg to only update if an interrupt did not already
91013 * do it for us. If the cmpxchg fails, we don't care.
91014 */
91015- (void)local_cmpxchg(&next_page->write, old_write, val);
91016- (void)local_cmpxchg(&next_page->entries, old_entries, eval);
91017+ (void)local_cmpxchg_unchecked(&next_page->write, old_write, val);
91018+ (void)local_cmpxchg_unchecked(&next_page->entries, old_entries, eval);
91019
91020 /*
91021 * No need to worry about races with clearing out the commit.
91022@@ -1389,12 +1389,12 @@ static void rb_reset_cpu(struct ring_buffer_per_cpu *cpu_buffer);
91023
91024 static inline unsigned long rb_page_entries(struct buffer_page *bpage)
91025 {
91026- return local_read(&bpage->entries) & RB_WRITE_MASK;
91027+ return local_read_unchecked(&bpage->entries) & RB_WRITE_MASK;
91028 }
91029
91030 static inline unsigned long rb_page_write(struct buffer_page *bpage)
91031 {
91032- return local_read(&bpage->write) & RB_WRITE_MASK;
91033+ return local_read_unchecked(&bpage->write) & RB_WRITE_MASK;
91034 }
91035
91036 static int
91037@@ -1489,7 +1489,7 @@ rb_remove_pages(struct ring_buffer_per_cpu *cpu_buffer, unsigned int nr_pages)
91038 * bytes consumed in ring buffer from here.
91039 * Increment overrun to account for the lost events.
91040 */
91041- local_add(page_entries, &cpu_buffer->overrun);
91042+ local_add_unchecked(page_entries, &cpu_buffer->overrun);
91043 local_sub(BUF_PAGE_SIZE, &cpu_buffer->entries_bytes);
91044 }
91045
91046@@ -2067,7 +2067,7 @@ rb_handle_head_page(struct ring_buffer_per_cpu *cpu_buffer,
91047 * it is our responsibility to update
91048 * the counters.
91049 */
91050- local_add(entries, &cpu_buffer->overrun);
91051+ local_add_unchecked(entries, &cpu_buffer->overrun);
91052 local_sub(BUF_PAGE_SIZE, &cpu_buffer->entries_bytes);
91053
91054 /*
91055@@ -2217,7 +2217,7 @@ rb_reset_tail(struct ring_buffer_per_cpu *cpu_buffer,
91056 if (tail == BUF_PAGE_SIZE)
91057 tail_page->real_end = 0;
91058
91059- local_sub(length, &tail_page->write);
91060+ local_sub_unchecked(length, &tail_page->write);
91061 return;
91062 }
91063
91064@@ -2252,7 +2252,7 @@ rb_reset_tail(struct ring_buffer_per_cpu *cpu_buffer,
91065 rb_event_set_padding(event);
91066
91067 /* Set the write back to the previous setting */
91068- local_sub(length, &tail_page->write);
91069+ local_sub_unchecked(length, &tail_page->write);
91070 return;
91071 }
91072
91073@@ -2264,7 +2264,7 @@ rb_reset_tail(struct ring_buffer_per_cpu *cpu_buffer,
91074
91075 /* Set write to end of buffer */
91076 length = (tail + length) - BUF_PAGE_SIZE;
91077- local_sub(length, &tail_page->write);
91078+ local_sub_unchecked(length, &tail_page->write);
91079 }
91080
91081 /*
91082@@ -2290,7 +2290,7 @@ rb_move_tail(struct ring_buffer_per_cpu *cpu_buffer,
91083 * about it.
91084 */
91085 if (unlikely(next_page == commit_page)) {
91086- local_inc(&cpu_buffer->commit_overrun);
91087+ local_inc_unchecked(&cpu_buffer->commit_overrun);
91088 goto out_reset;
91089 }
91090
91091@@ -2346,7 +2346,7 @@ rb_move_tail(struct ring_buffer_per_cpu *cpu_buffer,
91092 cpu_buffer->tail_page) &&
91093 (cpu_buffer->commit_page ==
91094 cpu_buffer->reader_page))) {
91095- local_inc(&cpu_buffer->commit_overrun);
91096+ local_inc_unchecked(&cpu_buffer->commit_overrun);
91097 goto out_reset;
91098 }
91099 }
91100@@ -2394,7 +2394,7 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer,
91101 length += RB_LEN_TIME_EXTEND;
91102
91103 tail_page = cpu_buffer->tail_page;
91104- write = local_add_return(length, &tail_page->write);
91105+ write = local_add_return_unchecked(length, &tail_page->write);
91106
91107 /* set write to only the index of the write */
91108 write &= RB_WRITE_MASK;
91109@@ -2418,7 +2418,7 @@ __rb_reserve_next(struct ring_buffer_per_cpu *cpu_buffer,
91110 kmemcheck_annotate_bitfield(event, bitfield);
91111 rb_update_event(cpu_buffer, event, length, add_timestamp, delta);
91112
91113- local_inc(&tail_page->entries);
91114+ local_inc_unchecked(&tail_page->entries);
91115
91116 /*
91117 * If this is the first commit on the page, then update
91118@@ -2451,7 +2451,7 @@ rb_try_to_discard(struct ring_buffer_per_cpu *cpu_buffer,
91119
91120 if (bpage->page == (void *)addr && rb_page_write(bpage) == old_index) {
91121 unsigned long write_mask =
91122- local_read(&bpage->write) & ~RB_WRITE_MASK;
91123+ local_read_unchecked(&bpage->write) & ~RB_WRITE_MASK;
91124 unsigned long event_length = rb_event_length(event);
91125 /*
91126 * This is on the tail page. It is possible that
91127@@ -2461,7 +2461,7 @@ rb_try_to_discard(struct ring_buffer_per_cpu *cpu_buffer,
91128 */
91129 old_index += write_mask;
91130 new_index += write_mask;
91131- index = local_cmpxchg(&bpage->write, old_index, new_index);
91132+ index = local_cmpxchg_unchecked(&bpage->write, old_index, new_index);
91133 if (index == old_index) {
91134 /* update counters */
91135 local_sub(event_length, &cpu_buffer->entries_bytes);
91136@@ -2853,7 +2853,7 @@ rb_decrement_entry(struct ring_buffer_per_cpu *cpu_buffer,
91137
91138 /* Do the likely case first */
91139 if (likely(bpage->page == (void *)addr)) {
91140- local_dec(&bpage->entries);
91141+ local_dec_unchecked(&bpage->entries);
91142 return;
91143 }
91144
91145@@ -2865,7 +2865,7 @@ rb_decrement_entry(struct ring_buffer_per_cpu *cpu_buffer,
91146 start = bpage;
91147 do {
91148 if (bpage->page == (void *)addr) {
91149- local_dec(&bpage->entries);
91150+ local_dec_unchecked(&bpage->entries);
91151 return;
91152 }
91153 rb_inc_page(cpu_buffer, &bpage);
91154@@ -3149,7 +3149,7 @@ static inline unsigned long
91155 rb_num_of_entries(struct ring_buffer_per_cpu *cpu_buffer)
91156 {
91157 return local_read(&cpu_buffer->entries) -
91158- (local_read(&cpu_buffer->overrun) + cpu_buffer->read);
91159+ (local_read_unchecked(&cpu_buffer->overrun) + cpu_buffer->read);
91160 }
91161
91162 /**
91163@@ -3238,7 +3238,7 @@ unsigned long ring_buffer_overrun_cpu(struct ring_buffer *buffer, int cpu)
91164 return 0;
91165
91166 cpu_buffer = buffer->buffers[cpu];
91167- ret = local_read(&cpu_buffer->overrun);
91168+ ret = local_read_unchecked(&cpu_buffer->overrun);
91169
91170 return ret;
91171 }
91172@@ -3261,7 +3261,7 @@ ring_buffer_commit_overrun_cpu(struct ring_buffer *buffer, int cpu)
91173 return 0;
91174
91175 cpu_buffer = buffer->buffers[cpu];
91176- ret = local_read(&cpu_buffer->commit_overrun);
91177+ ret = local_read_unchecked(&cpu_buffer->commit_overrun);
91178
91179 return ret;
91180 }
91181@@ -3346,7 +3346,7 @@ unsigned long ring_buffer_overruns(struct ring_buffer *buffer)
91182 /* if you care about this being correct, lock the buffer */
91183 for_each_buffer_cpu(buffer, cpu) {
91184 cpu_buffer = buffer->buffers[cpu];
91185- overruns += local_read(&cpu_buffer->overrun);
91186+ overruns += local_read_unchecked(&cpu_buffer->overrun);
91187 }
91188
91189 return overruns;
91190@@ -3522,8 +3522,8 @@ rb_get_reader_page(struct ring_buffer_per_cpu *cpu_buffer)
91191 /*
91192 * Reset the reader page to size zero.
91193 */
91194- local_set(&cpu_buffer->reader_page->write, 0);
91195- local_set(&cpu_buffer->reader_page->entries, 0);
91196+ local_set_unchecked(&cpu_buffer->reader_page->write, 0);
91197+ local_set_unchecked(&cpu_buffer->reader_page->entries, 0);
91198 local_set(&cpu_buffer->reader_page->page->commit, 0);
91199 cpu_buffer->reader_page->real_end = 0;
91200
91201@@ -3557,7 +3557,7 @@ rb_get_reader_page(struct ring_buffer_per_cpu *cpu_buffer)
91202 * want to compare with the last_overrun.
91203 */
91204 smp_mb();
91205- overwrite = local_read(&(cpu_buffer->overrun));
91206+ overwrite = local_read_unchecked(&(cpu_buffer->overrun));
91207
91208 /*
91209 * Here's the tricky part.
91210@@ -4127,8 +4127,8 @@ rb_reset_cpu(struct ring_buffer_per_cpu *cpu_buffer)
91211
91212 cpu_buffer->head_page
91213 = list_entry(cpu_buffer->pages, struct buffer_page, list);
91214- local_set(&cpu_buffer->head_page->write, 0);
91215- local_set(&cpu_buffer->head_page->entries, 0);
91216+ local_set_unchecked(&cpu_buffer->head_page->write, 0);
91217+ local_set_unchecked(&cpu_buffer->head_page->entries, 0);
91218 local_set(&cpu_buffer->head_page->page->commit, 0);
91219
91220 cpu_buffer->head_page->read = 0;
91221@@ -4138,14 +4138,14 @@ rb_reset_cpu(struct ring_buffer_per_cpu *cpu_buffer)
91222
91223 INIT_LIST_HEAD(&cpu_buffer->reader_page->list);
91224 INIT_LIST_HEAD(&cpu_buffer->new_pages);
91225- local_set(&cpu_buffer->reader_page->write, 0);
91226- local_set(&cpu_buffer->reader_page->entries, 0);
91227+ local_set_unchecked(&cpu_buffer->reader_page->write, 0);
91228+ local_set_unchecked(&cpu_buffer->reader_page->entries, 0);
91229 local_set(&cpu_buffer->reader_page->page->commit, 0);
91230 cpu_buffer->reader_page->read = 0;
91231
91232 local_set(&cpu_buffer->entries_bytes, 0);
91233- local_set(&cpu_buffer->overrun, 0);
91234- local_set(&cpu_buffer->commit_overrun, 0);
91235+ local_set_unchecked(&cpu_buffer->overrun, 0);
91236+ local_set_unchecked(&cpu_buffer->commit_overrun, 0);
91237 local_set(&cpu_buffer->dropped_events, 0);
91238 local_set(&cpu_buffer->entries, 0);
91239 local_set(&cpu_buffer->committing, 0);
91240@@ -4550,8 +4550,8 @@ int ring_buffer_read_page(struct ring_buffer *buffer,
91241 rb_init_page(bpage);
91242 bpage = reader->page;
91243 reader->page = *data_page;
91244- local_set(&reader->write, 0);
91245- local_set(&reader->entries, 0);
91246+ local_set_unchecked(&reader->write, 0);
91247+ local_set_unchecked(&reader->entries, 0);
91248 reader->read = 0;
91249 *data_page = bpage;
91250
91251diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
91252index e916972..e87f285 100644
91253--- a/kernel/trace/trace.c
91254+++ b/kernel/trace/trace.c
91255@@ -3449,7 +3449,7 @@ int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set)
91256 return 0;
91257 }
91258
91259-int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled)
91260+int set_tracer_flag(struct trace_array *tr, unsigned long mask, int enabled)
91261 {
91262 /* do nothing if flag is already set */
91263 if (!!(trace_flags & mask) == !!enabled)
91264diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
91265index 2e29d7b..61367d7 100644
91266--- a/kernel/trace/trace.h
91267+++ b/kernel/trace/trace.h
91268@@ -1264,7 +1264,7 @@ extern const char *__stop___tracepoint_str[];
91269 void trace_printk_init_buffers(void);
91270 void trace_printk_start_comm(void);
91271 int trace_keep_overwrite(struct tracer *tracer, u32 mask, int set);
91272-int set_tracer_flag(struct trace_array *tr, unsigned int mask, int enabled);
91273+int set_tracer_flag(struct trace_array *tr, unsigned long mask, int enabled);
91274
91275 /*
91276 * Normal trace_printk() and friends allocates special buffers
91277diff --git a/kernel/trace/trace_clock.c b/kernel/trace/trace_clock.c
91278index 26dc348..8708ca7 100644
91279--- a/kernel/trace/trace_clock.c
91280+++ b/kernel/trace/trace_clock.c
91281@@ -123,7 +123,7 @@ u64 notrace trace_clock_global(void)
91282 return now;
91283 }
91284
91285-static atomic64_t trace_counter;
91286+static atomic64_unchecked_t trace_counter;
91287
91288 /*
91289 * trace_clock_counter(): simply an atomic counter.
91290@@ -132,5 +132,5 @@ static atomic64_t trace_counter;
91291 */
91292 u64 notrace trace_clock_counter(void)
91293 {
91294- return atomic64_add_return(1, &trace_counter);
91295+ return atomic64_inc_return_unchecked(&trace_counter);
91296 }
91297diff --git a/kernel/trace/trace_events.c b/kernel/trace/trace_events.c
91298index 3ddfd8f..41a10fe 100644
91299--- a/kernel/trace/trace_events.c
91300+++ b/kernel/trace/trace_events.c
91301@@ -1718,7 +1718,6 @@ __trace_early_add_new_event(struct ftrace_event_call *call,
91302 return 0;
91303 }
91304
91305-struct ftrace_module_file_ops;
91306 static void __add_event_to_tracers(struct ftrace_event_call *call);
91307
91308 /* Add an additional event_call dynamically */
91309diff --git a/kernel/trace/trace_mmiotrace.c b/kernel/trace/trace_mmiotrace.c
91310index 0abd9b8..6a663a2 100644
91311--- a/kernel/trace/trace_mmiotrace.c
91312+++ b/kernel/trace/trace_mmiotrace.c
91313@@ -24,7 +24,7 @@ struct header_iter {
91314 static struct trace_array *mmio_trace_array;
91315 static bool overrun_detected;
91316 static unsigned long prev_overruns;
91317-static atomic_t dropped_count;
91318+static atomic_unchecked_t dropped_count;
91319
91320 static void mmio_reset_data(struct trace_array *tr)
91321 {
91322@@ -127,7 +127,7 @@ static void mmio_close(struct trace_iterator *iter)
91323
91324 static unsigned long count_overruns(struct trace_iterator *iter)
91325 {
91326- unsigned long cnt = atomic_xchg(&dropped_count, 0);
91327+ unsigned long cnt = atomic_xchg_unchecked(&dropped_count, 0);
91328 unsigned long over = ring_buffer_overruns(iter->trace_buffer->buffer);
91329
91330 if (over > prev_overruns)
91331@@ -317,7 +317,7 @@ static void __trace_mmiotrace_rw(struct trace_array *tr,
91332 event = trace_buffer_lock_reserve(buffer, TRACE_MMIO_RW,
91333 sizeof(*entry), 0, pc);
91334 if (!event) {
91335- atomic_inc(&dropped_count);
91336+ atomic_inc_unchecked(&dropped_count);
91337 return;
91338 }
91339 entry = ring_buffer_event_data(event);
91340@@ -347,7 +347,7 @@ static void __trace_mmiotrace_map(struct trace_array *tr,
91341 event = trace_buffer_lock_reserve(buffer, TRACE_MMIO_MAP,
91342 sizeof(*entry), 0, pc);
91343 if (!event) {
91344- atomic_inc(&dropped_count);
91345+ atomic_inc_unchecked(&dropped_count);
91346 return;
91347 }
91348 entry = ring_buffer_event_data(event);
91349diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
91350index a436de1..f64dde2 100644
91351--- a/kernel/trace/trace_output.c
91352+++ b/kernel/trace/trace_output.c
91353@@ -294,7 +294,7 @@ int trace_seq_path(struct trace_seq *s, const struct path *path)
91354
91355 p = d_path(path, s->buffer + s->len, PAGE_SIZE - s->len);
91356 if (!IS_ERR(p)) {
91357- p = mangle_path(s->buffer + s->len, p, "\n");
91358+ p = mangle_path(s->buffer + s->len, p, "\n\\");
91359 if (p) {
91360 s->len = p - s->buffer;
91361 return 1;
91362@@ -939,14 +939,16 @@ int register_ftrace_event(struct trace_event *event)
91363 goto out;
91364 }
91365
91366+ pax_open_kernel();
91367 if (event->funcs->trace == NULL)
91368- event->funcs->trace = trace_nop_print;
91369+ *(void **)&event->funcs->trace = trace_nop_print;
91370 if (event->funcs->raw == NULL)
91371- event->funcs->raw = trace_nop_print;
91372+ *(void **)&event->funcs->raw = trace_nop_print;
91373 if (event->funcs->hex == NULL)
91374- event->funcs->hex = trace_nop_print;
91375+ *(void **)&event->funcs->hex = trace_nop_print;
91376 if (event->funcs->binary == NULL)
91377- event->funcs->binary = trace_nop_print;
91378+ *(void **)&event->funcs->binary = trace_nop_print;
91379+ pax_close_kernel();
91380
91381 key = event->type & (EVENT_HASHSIZE - 1);
91382
91383diff --git a/kernel/trace/trace_stack.c b/kernel/trace/trace_stack.c
91384index 21b320e..40607bc 100644
91385--- a/kernel/trace/trace_stack.c
91386+++ b/kernel/trace/trace_stack.c
91387@@ -69,7 +69,7 @@ check_stack(unsigned long ip, unsigned long *stack)
91388 return;
91389
91390 /* we do not handle interrupt stacks yet */
91391- if (!object_is_on_stack(stack))
91392+ if (!object_starts_on_stack(stack))
91393 return;
91394
91395 local_irq_save(flags);
91396diff --git a/kernel/user_namespace.c b/kernel/user_namespace.c
91397index bf71b4b..04dee68 100644
91398--- a/kernel/user_namespace.c
91399+++ b/kernel/user_namespace.c
91400@@ -82,6 +82,21 @@ int create_user_ns(struct cred *new)
91401 !kgid_has_mapping(parent_ns, group))
91402 return -EPERM;
91403
91404+#ifdef CONFIG_GRKERNSEC
91405+ /*
91406+ * This doesn't really inspire confidence:
91407+ * http://marc.info/?l=linux-kernel&m=135543612731939&w=2
91408+ * http://marc.info/?l=linux-kernel&m=135545831607095&w=2
91409+ * Increases kernel attack surface in areas developers
91410+ * previously cared little about ("low importance due
91411+ * to requiring "root" capability")
91412+ * To be removed when this code receives *proper* review
91413+ */
91414+ if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SETUID) ||
91415+ !capable(CAP_SETGID))
91416+ return -EPERM;
91417+#endif
91418+
91419 ns = kmem_cache_zalloc(user_ns_cachep, GFP_KERNEL);
91420 if (!ns)
91421 return -ENOMEM;
91422@@ -865,7 +880,7 @@ static int userns_install(struct nsproxy *nsproxy, void *ns)
91423 if (atomic_read(&current->mm->mm_users) > 1)
91424 return -EINVAL;
91425
91426- if (current->fs->users != 1)
91427+ if (atomic_read(&current->fs->users) != 1)
91428 return -EINVAL;
91429
91430 if (!ns_capable(user_ns, CAP_SYS_ADMIN))
91431diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c
91432index 4f69f9a..7c6f8f8 100644
91433--- a/kernel/utsname_sysctl.c
91434+++ b/kernel/utsname_sysctl.c
91435@@ -47,7 +47,7 @@ static void put_uts(ctl_table *table, int write, void *which)
91436 static int proc_do_uts_string(ctl_table *table, int write,
91437 void __user *buffer, size_t *lenp, loff_t *ppos)
91438 {
91439- struct ctl_table uts_table;
91440+ ctl_table_no_const uts_table;
91441 int r;
91442 memcpy(&uts_table, table, sizeof(uts_table));
91443 uts_table.data = get_uts(table, write);
91444diff --git a/kernel/watchdog.c b/kernel/watchdog.c
91445index 30e4822..dd2b854 100644
91446--- a/kernel/watchdog.c
91447+++ b/kernel/watchdog.c
91448@@ -479,7 +479,7 @@ static int watchdog_nmi_enable(unsigned int cpu) { return 0; }
91449 static void watchdog_nmi_disable(unsigned int cpu) { return; }
91450 #endif /* CONFIG_HARDLOCKUP_DETECTOR */
91451
91452-static struct smp_hotplug_thread watchdog_threads = {
91453+static struct smp_hotplug_thread watchdog_threads __read_only = {
91454 .store = &softlockup_watchdog,
91455 .thread_should_run = watchdog_should_run,
91456 .thread_fn = watchdog,
91457diff --git a/kernel/workqueue.c b/kernel/workqueue.c
91458index 8edc8718..b6a70b9 100644
91459--- a/kernel/workqueue.c
91460+++ b/kernel/workqueue.c
91461@@ -4709,7 +4709,7 @@ static void rebind_workers(struct worker_pool *pool)
91462 WARN_ON_ONCE(!(worker_flags & WORKER_UNBOUND));
91463 worker_flags |= WORKER_REBOUND;
91464 worker_flags &= ~WORKER_UNBOUND;
91465- ACCESS_ONCE(worker->flags) = worker_flags;
91466+ ACCESS_ONCE_RW(worker->flags) = worker_flags;
91467 }
91468
91469 spin_unlock_irq(&pool->lock);
91470diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
91471index 819ac51..1c8a65e 100644
91472--- a/lib/Kconfig.debug
91473+++ b/lib/Kconfig.debug
91474@@ -853,7 +853,7 @@ config DEBUG_MUTEXES
91475
91476 config DEBUG_WW_MUTEX_SLOWPATH
91477 bool "Wait/wound mutex debugging: Slowpath testing"
91478- depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
91479+ depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT && !PAX_CONSTIFY_PLUGIN
91480 select DEBUG_LOCK_ALLOC
91481 select DEBUG_SPINLOCK
91482 select DEBUG_MUTEXES
91483@@ -866,7 +866,7 @@ config DEBUG_WW_MUTEX_SLOWPATH
91484
91485 config DEBUG_LOCK_ALLOC
91486 bool "Lock debugging: detect incorrect freeing of live locks"
91487- depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
91488+ depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT && !PAX_CONSTIFY_PLUGIN
91489 select DEBUG_SPINLOCK
91490 select DEBUG_MUTEXES
91491 select LOCKDEP
91492@@ -880,7 +880,7 @@ config DEBUG_LOCK_ALLOC
91493
91494 config PROVE_LOCKING
91495 bool "Lock debugging: prove locking correctness"
91496- depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
91497+ depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT && !PAX_CONSTIFY_PLUGIN
91498 select LOCKDEP
91499 select DEBUG_SPINLOCK
91500 select DEBUG_MUTEXES
91501@@ -931,7 +931,7 @@ config LOCKDEP
91502
91503 config LOCK_STAT
91504 bool "Lock usage statistics"
91505- depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT
91506+ depends on DEBUG_KERNEL && TRACE_IRQFLAGS_SUPPORT && STACKTRACE_SUPPORT && LOCKDEP_SUPPORT && !PAX_CONSTIFY_PLUGIN
91507 select LOCKDEP
91508 select DEBUG_SPINLOCK
91509 select DEBUG_MUTEXES
91510@@ -1403,6 +1403,7 @@ config LATENCYTOP
91511 depends on DEBUG_KERNEL
91512 depends on STACKTRACE_SUPPORT
91513 depends on PROC_FS
91514+ depends on !GRKERNSEC_HIDESYM
91515 select FRAME_POINTER if !MIPS && !PPC && !S390 && !MICROBLAZE && !ARM_UNWIND && !ARC
91516 select KALLSYMS
91517 select KALLSYMS_ALL
91518@@ -1419,7 +1420,7 @@ config ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
91519 config DEBUG_STRICT_USER_COPY_CHECKS
91520 bool "Strict user copy size checks"
91521 depends on ARCH_HAS_DEBUG_STRICT_USER_COPY_CHECKS
91522- depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING
91523+ depends on DEBUG_KERNEL && !TRACE_BRANCH_PROFILING && !PAX_SIZE_OVERFLOW
91524 help
91525 Enabling this option turns a certain set of sanity checks for user
91526 copy operations into compile time failures.
91527@@ -1538,7 +1539,7 @@ endmenu # runtime tests
91528
91529 config PROVIDE_OHCI1394_DMA_INIT
91530 bool "Remote debugging over FireWire early on boot"
91531- depends on PCI && X86
91532+ depends on PCI && X86 && !GRKERNSEC
91533 help
91534 If you want to debug problems which hang or crash the kernel early
91535 on boot and the crashing machine has a FireWire port, you can use
91536diff --git a/lib/Makefile b/lib/Makefile
91537index 0cd7b68..e149e37 100644
91538--- a/lib/Makefile
91539+++ b/lib/Makefile
91540@@ -52,7 +52,7 @@ obj-$(CONFIG_GENERIC_HWEIGHT) += hweight.o
91541 obj-$(CONFIG_BTREE) += btree.o
91542 obj-$(CONFIG_ASSOCIATIVE_ARRAY) += assoc_array.o
91543 obj-$(CONFIG_DEBUG_PREEMPT) += smp_processor_id.o
91544-obj-$(CONFIG_DEBUG_LIST) += list_debug.o
91545+obj-y += list_debug.o
91546 obj-$(CONFIG_DEBUG_OBJECTS) += debugobjects.o
91547
91548 ifneq ($(CONFIG_HAVE_DEC_LOCK),y)
91549diff --git a/lib/average.c b/lib/average.c
91550index 114d1be..ab0350c 100644
91551--- a/lib/average.c
91552+++ b/lib/average.c
91553@@ -55,7 +55,7 @@ struct ewma *ewma_add(struct ewma *avg, unsigned long val)
91554 {
91555 unsigned long internal = ACCESS_ONCE(avg->internal);
91556
91557- ACCESS_ONCE(avg->internal) = internal ?
91558+ ACCESS_ONCE_RW(avg->internal) = internal ?
91559 (((internal << avg->weight) - internal) +
91560 (val << avg->factor)) >> avg->weight :
91561 (val << avg->factor);
91562diff --git a/lib/bitmap.c b/lib/bitmap.c
91563index 06f7e4f..f3cf2b0 100644
91564--- a/lib/bitmap.c
91565+++ b/lib/bitmap.c
91566@@ -422,7 +422,7 @@ int __bitmap_parse(const char *buf, unsigned int buflen,
91567 {
91568 int c, old_c, totaldigits, ndigits, nchunks, nbits;
91569 u32 chunk;
91570- const char __user __force *ubuf = (const char __user __force *)buf;
91571+ const char __user *ubuf = (const char __force_user *)buf;
91572
91573 bitmap_zero(maskp, nmaskbits);
91574
91575@@ -507,7 +507,7 @@ int bitmap_parse_user(const char __user *ubuf,
91576 {
91577 if (!access_ok(VERIFY_READ, ubuf, ulen))
91578 return -EFAULT;
91579- return __bitmap_parse((const char __force *)ubuf,
91580+ return __bitmap_parse((const char __force_kernel *)ubuf,
91581 ulen, 1, maskp, nmaskbits);
91582
91583 }
91584@@ -598,7 +598,7 @@ static int __bitmap_parselist(const char *buf, unsigned int buflen,
91585 {
91586 unsigned a, b;
91587 int c, old_c, totaldigits;
91588- const char __user __force *ubuf = (const char __user __force *)buf;
91589+ const char __user *ubuf = (const char __force_user *)buf;
91590 int exp_digit, in_range;
91591
91592 totaldigits = c = 0;
91593@@ -698,7 +698,7 @@ int bitmap_parselist_user(const char __user *ubuf,
91594 {
91595 if (!access_ok(VERIFY_READ, ubuf, ulen))
91596 return -EFAULT;
91597- return __bitmap_parselist((const char __force *)ubuf,
91598+ return __bitmap_parselist((const char __force_kernel *)ubuf,
91599 ulen, 1, maskp, nmaskbits);
91600 }
91601 EXPORT_SYMBOL(bitmap_parselist_user);
91602diff --git a/lib/bug.c b/lib/bug.c
91603index 1686034..a9c00c8 100644
91604--- a/lib/bug.c
91605+++ b/lib/bug.c
91606@@ -134,6 +134,8 @@ enum bug_trap_type report_bug(unsigned long bugaddr, struct pt_regs *regs)
91607 return BUG_TRAP_TYPE_NONE;
91608
91609 bug = find_bug(bugaddr);
91610+ if (!bug)
91611+ return BUG_TRAP_TYPE_NONE;
91612
91613 file = NULL;
91614 line = 0;
91615diff --git a/lib/debugobjects.c b/lib/debugobjects.c
91616index e0731c3..ad66444 100644
91617--- a/lib/debugobjects.c
91618+++ b/lib/debugobjects.c
91619@@ -286,7 +286,7 @@ static void debug_object_is_on_stack(void *addr, int onstack)
91620 if (limit > 4)
91621 return;
91622
91623- is_on_stack = object_is_on_stack(addr);
91624+ is_on_stack = object_starts_on_stack(addr);
91625 if (is_on_stack == onstack)
91626 return;
91627
91628diff --git a/lib/div64.c b/lib/div64.c
91629index 4382ad7..08aa558 100644
91630--- a/lib/div64.c
91631+++ b/lib/div64.c
91632@@ -59,7 +59,7 @@ uint32_t __attribute__((weak)) __div64_32(uint64_t *n, uint32_t base)
91633 EXPORT_SYMBOL(__div64_32);
91634
91635 #ifndef div_s64_rem
91636-s64 div_s64_rem(s64 dividend, s32 divisor, s32 *remainder)
91637+s64 __intentional_overflow(-1) div_s64_rem(s64 dividend, s32 divisor, s32 *remainder)
91638 {
91639 u64 quotient;
91640
91641@@ -130,7 +130,7 @@ EXPORT_SYMBOL(div64_u64_rem);
91642 * 'http://www.hackersdelight.org/HDcode/newCode/divDouble.c.txt'
91643 */
91644 #ifndef div64_u64
91645-u64 div64_u64(u64 dividend, u64 divisor)
91646+u64 __intentional_overflow(-1) div64_u64(u64 dividend, u64 divisor)
91647 {
91648 u32 high = divisor >> 32;
91649 u64 quot;
91650diff --git a/lib/dma-debug.c b/lib/dma-debug.c
91651index 98f2d7e..899da5c 100644
91652--- a/lib/dma-debug.c
91653+++ b/lib/dma-debug.c
91654@@ -971,7 +971,7 @@ static int dma_debug_device_change(struct notifier_block *nb, unsigned long acti
91655
91656 void dma_debug_add_bus(struct bus_type *bus)
91657 {
91658- struct notifier_block *nb;
91659+ notifier_block_no_const *nb;
91660
91661 if (global_disable)
91662 return;
91663@@ -1148,7 +1148,7 @@ static void check_unmap(struct dma_debug_entry *ref)
91664
91665 static void check_for_stack(struct device *dev, void *addr)
91666 {
91667- if (object_is_on_stack(addr))
91668+ if (object_starts_on_stack(addr))
91669 err_printk(dev, NULL, "DMA-API: device driver maps memory from"
91670 "stack [addr=%p]\n", addr);
91671 }
91672diff --git a/lib/hash.c b/lib/hash.c
91673index fea973f..386626f 100644
91674--- a/lib/hash.c
91675+++ b/lib/hash.c
91676@@ -14,7 +14,7 @@
91677 #include <linux/hash.h>
91678 #include <linux/cache.h>
91679
91680-static struct fast_hash_ops arch_hash_ops __read_mostly = {
91681+static struct fast_hash_ops arch_hash_ops __read_only = {
91682 .hash = jhash,
91683 .hash2 = jhash2,
91684 };
91685diff --git a/lib/inflate.c b/lib/inflate.c
91686index 013a761..c28f3fc 100644
91687--- a/lib/inflate.c
91688+++ b/lib/inflate.c
91689@@ -269,7 +269,7 @@ static void free(void *where)
91690 malloc_ptr = free_mem_ptr;
91691 }
91692 #else
91693-#define malloc(a) kmalloc(a, GFP_KERNEL)
91694+#define malloc(a) kmalloc((a), GFP_KERNEL)
91695 #define free(a) kfree(a)
91696 #endif
91697
91698diff --git a/lib/ioremap.c b/lib/ioremap.c
91699index 0c9216c..863bd89 100644
91700--- a/lib/ioremap.c
91701+++ b/lib/ioremap.c
91702@@ -38,7 +38,7 @@ static inline int ioremap_pmd_range(pud_t *pud, unsigned long addr,
91703 unsigned long next;
91704
91705 phys_addr -= addr;
91706- pmd = pmd_alloc(&init_mm, pud, addr);
91707+ pmd = pmd_alloc_kernel(&init_mm, pud, addr);
91708 if (!pmd)
91709 return -ENOMEM;
91710 do {
91711@@ -56,7 +56,7 @@ static inline int ioremap_pud_range(pgd_t *pgd, unsigned long addr,
91712 unsigned long next;
91713
91714 phys_addr -= addr;
91715- pud = pud_alloc(&init_mm, pgd, addr);
91716+ pud = pud_alloc_kernel(&init_mm, pgd, addr);
91717 if (!pud)
91718 return -ENOMEM;
91719 do {
91720diff --git a/lib/is_single_threaded.c b/lib/is_single_threaded.c
91721index bd2bea9..6b3c95e 100644
91722--- a/lib/is_single_threaded.c
91723+++ b/lib/is_single_threaded.c
91724@@ -22,6 +22,9 @@ bool current_is_single_threaded(void)
91725 struct task_struct *p, *t;
91726 bool ret;
91727
91728+ if (!mm)
91729+ return true;
91730+
91731 if (atomic_read(&task->signal->live) != 1)
91732 return false;
91733
91734diff --git a/lib/kobject.c b/lib/kobject.c
91735index 58751bb..93a1853 100644
91736--- a/lib/kobject.c
91737+++ b/lib/kobject.c
91738@@ -931,9 +931,9 @@ EXPORT_SYMBOL_GPL(kset_create_and_add);
91739
91740
91741 static DEFINE_SPINLOCK(kobj_ns_type_lock);
91742-static const struct kobj_ns_type_operations *kobj_ns_ops_tbl[KOBJ_NS_TYPES];
91743+static const struct kobj_ns_type_operations *kobj_ns_ops_tbl[KOBJ_NS_TYPES] __read_only;
91744
91745-int kobj_ns_type_register(const struct kobj_ns_type_operations *ops)
91746+int __init kobj_ns_type_register(const struct kobj_ns_type_operations *ops)
91747 {
91748 enum kobj_ns_type type = ops->type;
91749 int error;
91750diff --git a/lib/list_debug.c b/lib/list_debug.c
91751index c24c2f7..f0296f4 100644
91752--- a/lib/list_debug.c
91753+++ b/lib/list_debug.c
91754@@ -11,7 +11,9 @@
91755 #include <linux/bug.h>
91756 #include <linux/kernel.h>
91757 #include <linux/rculist.h>
91758+#include <linux/mm.h>
91759
91760+#ifdef CONFIG_DEBUG_LIST
91761 /*
91762 * Insert a new entry between two known consecutive entries.
91763 *
91764@@ -19,21 +21,40 @@
91765 * the prev/next entries already!
91766 */
91767
91768+static bool __list_add_debug(struct list_head *new,
91769+ struct list_head *prev,
91770+ struct list_head *next)
91771+{
91772+ if (unlikely(next->prev != prev)) {
91773+ printk(KERN_ERR "list_add corruption. next->prev should be "
91774+ "prev (%p), but was %p. (next=%p).\n",
91775+ prev, next->prev, next);
91776+ BUG();
91777+ return false;
91778+ }
91779+ if (unlikely(prev->next != next)) {
91780+ printk(KERN_ERR "list_add corruption. prev->next should be "
91781+ "next (%p), but was %p. (prev=%p).\n",
91782+ next, prev->next, prev);
91783+ BUG();
91784+ return false;
91785+ }
91786+ if (unlikely(new == prev || new == next)) {
91787+ printk(KERN_ERR "list_add double add: new=%p, prev=%p, next=%p.\n",
91788+ new, prev, next);
91789+ BUG();
91790+ return false;
91791+ }
91792+ return true;
91793+}
91794+
91795 void __list_add(struct list_head *new,
91796- struct list_head *prev,
91797- struct list_head *next)
91798+ struct list_head *prev,
91799+ struct list_head *next)
91800 {
91801- WARN(next->prev != prev,
91802- "list_add corruption. next->prev should be "
91803- "prev (%p), but was %p. (next=%p).\n",
91804- prev, next->prev, next);
91805- WARN(prev->next != next,
91806- "list_add corruption. prev->next should be "
91807- "next (%p), but was %p. (prev=%p).\n",
91808- next, prev->next, prev);
91809- WARN(new == prev || new == next,
91810- "list_add double add: new=%p, prev=%p, next=%p.\n",
91811- new, prev, next);
91812+ if (!__list_add_debug(new, prev, next))
91813+ return;
91814+
91815 next->prev = new;
91816 new->next = next;
91817 new->prev = prev;
91818@@ -41,28 +62,46 @@ void __list_add(struct list_head *new,
91819 }
91820 EXPORT_SYMBOL(__list_add);
91821
91822-void __list_del_entry(struct list_head *entry)
91823+static bool __list_del_entry_debug(struct list_head *entry)
91824 {
91825 struct list_head *prev, *next;
91826
91827 prev = entry->prev;
91828 next = entry->next;
91829
91830- if (WARN(next == LIST_POISON1,
91831- "list_del corruption, %p->next is LIST_POISON1 (%p)\n",
91832- entry, LIST_POISON1) ||
91833- WARN(prev == LIST_POISON2,
91834- "list_del corruption, %p->prev is LIST_POISON2 (%p)\n",
91835- entry, LIST_POISON2) ||
91836- WARN(prev->next != entry,
91837- "list_del corruption. prev->next should be %p, "
91838- "but was %p\n", entry, prev->next) ||
91839- WARN(next->prev != entry,
91840- "list_del corruption. next->prev should be %p, "
91841- "but was %p\n", entry, next->prev))
91842+ if (unlikely(next == LIST_POISON1)) {
91843+ printk(KERN_ERR "list_del corruption, %p->next is LIST_POISON1 (%p)\n",
91844+ entry, LIST_POISON1);
91845+ BUG();
91846+ return false;
91847+ }
91848+ if (unlikely(prev == LIST_POISON2)) {
91849+ printk(KERN_ERR "list_del corruption, %p->prev is LIST_POISON2 (%p)\n",
91850+ entry, LIST_POISON2);
91851+ BUG();
91852+ return false;
91853+ }
91854+ if (unlikely(entry->prev->next != entry)) {
91855+ printk(KERN_ERR "list_del corruption. prev->next should be %p, "
91856+ "but was %p\n", entry, prev->next);
91857+ BUG();
91858+ return false;
91859+ }
91860+ if (unlikely(entry->next->prev != entry)) {
91861+ printk(KERN_ERR "list_del corruption. next->prev should be %p, "
91862+ "but was %p\n", entry, next->prev);
91863+ BUG();
91864+ return false;
91865+ }
91866+ return true;
91867+}
91868+
91869+void __list_del_entry(struct list_head *entry)
91870+{
91871+ if (!__list_del_entry_debug(entry))
91872 return;
91873
91874- __list_del(prev, next);
91875+ __list_del(entry->prev, entry->next);
91876 }
91877 EXPORT_SYMBOL(__list_del_entry);
91878
91879@@ -86,15 +125,85 @@ EXPORT_SYMBOL(list_del);
91880 void __list_add_rcu(struct list_head *new,
91881 struct list_head *prev, struct list_head *next)
91882 {
91883- WARN(next->prev != prev,
91884- "list_add_rcu corruption. next->prev should be prev (%p), but was %p. (next=%p).\n",
91885- prev, next->prev, next);
91886- WARN(prev->next != next,
91887- "list_add_rcu corruption. prev->next should be next (%p), but was %p. (prev=%p).\n",
91888- next, prev->next, prev);
91889+ if (!__list_add_debug(new, prev, next))
91890+ return;
91891+
91892 new->next = next;
91893 new->prev = prev;
91894 rcu_assign_pointer(list_next_rcu(prev), new);
91895 next->prev = new;
91896 }
91897 EXPORT_SYMBOL(__list_add_rcu);
91898+#endif
91899+
91900+void __pax_list_add(struct list_head *new, struct list_head *prev, struct list_head *next)
91901+{
91902+#ifdef CONFIG_DEBUG_LIST
91903+ if (!__list_add_debug(new, prev, next))
91904+ return;
91905+#endif
91906+
91907+ pax_open_kernel();
91908+ next->prev = new;
91909+ new->next = next;
91910+ new->prev = prev;
91911+ prev->next = new;
91912+ pax_close_kernel();
91913+}
91914+EXPORT_SYMBOL(__pax_list_add);
91915+
91916+void pax_list_del(struct list_head *entry)
91917+{
91918+#ifdef CONFIG_DEBUG_LIST
91919+ if (!__list_del_entry_debug(entry))
91920+ return;
91921+#endif
91922+
91923+ pax_open_kernel();
91924+ __list_del(entry->prev, entry->next);
91925+ entry->next = LIST_POISON1;
91926+ entry->prev = LIST_POISON2;
91927+ pax_close_kernel();
91928+}
91929+EXPORT_SYMBOL(pax_list_del);
91930+
91931+void pax_list_del_init(struct list_head *entry)
91932+{
91933+ pax_open_kernel();
91934+ __list_del(entry->prev, entry->next);
91935+ INIT_LIST_HEAD(entry);
91936+ pax_close_kernel();
91937+}
91938+EXPORT_SYMBOL(pax_list_del_init);
91939+
91940+void __pax_list_add_rcu(struct list_head *new,
91941+ struct list_head *prev, struct list_head *next)
91942+{
91943+#ifdef CONFIG_DEBUG_LIST
91944+ if (!__list_add_debug(new, prev, next))
91945+ return;
91946+#endif
91947+
91948+ pax_open_kernel();
91949+ new->next = next;
91950+ new->prev = prev;
91951+ rcu_assign_pointer(list_next_rcu(prev), new);
91952+ next->prev = new;
91953+ pax_close_kernel();
91954+}
91955+EXPORT_SYMBOL(__pax_list_add_rcu);
91956+
91957+void pax_list_del_rcu(struct list_head *entry)
91958+{
91959+#ifdef CONFIG_DEBUG_LIST
91960+ if (!__list_del_entry_debug(entry))
91961+ return;
91962+#endif
91963+
91964+ pax_open_kernel();
91965+ __list_del(entry->prev, entry->next);
91966+ entry->next = LIST_POISON1;
91967+ entry->prev = LIST_POISON2;
91968+ pax_close_kernel();
91969+}
91970+EXPORT_SYMBOL(pax_list_del_rcu);
91971diff --git a/lib/percpu-refcount.c b/lib/percpu-refcount.c
91972index 963b703..438bc51 100644
91973--- a/lib/percpu-refcount.c
91974+++ b/lib/percpu-refcount.c
91975@@ -29,7 +29,7 @@
91976 * can't hit 0 before we've added up all the percpu refs.
91977 */
91978
91979-#define PCPU_COUNT_BIAS (1U << 31)
91980+#define PCPU_COUNT_BIAS (1U << 30)
91981
91982 /**
91983 * percpu_ref_init - initialize a percpu refcount
91984diff --git a/lib/radix-tree.c b/lib/radix-tree.c
91985index 9599aa7..9cf6c72 100644
91986--- a/lib/radix-tree.c
91987+++ b/lib/radix-tree.c
91988@@ -66,7 +66,7 @@ struct radix_tree_preload {
91989 int nr;
91990 struct radix_tree_node *nodes[RADIX_TREE_PRELOAD_SIZE];
91991 };
91992-static DEFINE_PER_CPU(struct radix_tree_preload, radix_tree_preloads) = { 0, };
91993+static DEFINE_PER_CPU(struct radix_tree_preload, radix_tree_preloads);
91994
91995 static inline void *ptr_to_indirect(void *ptr)
91996 {
91997diff --git a/lib/random32.c b/lib/random32.c
91998index fa5da61..35fe9af 100644
91999--- a/lib/random32.c
92000+++ b/lib/random32.c
92001@@ -42,7 +42,7 @@
92002 static void __init prandom_state_selftest(void);
92003 #endif
92004
92005-static DEFINE_PER_CPU(struct rnd_state, net_rand_state);
92006+static DEFINE_PER_CPU(struct rnd_state, net_rand_state) __latent_entropy;
92007
92008 /**
92009 * prandom_u32_state - seeded pseudo-random number generator.
92010diff --git a/lib/rbtree.c b/lib/rbtree.c
92011index 65f4eff..2cfa167 100644
92012--- a/lib/rbtree.c
92013+++ b/lib/rbtree.c
92014@@ -380,7 +380,9 @@ static inline void dummy_copy(struct rb_node *old, struct rb_node *new) {}
92015 static inline void dummy_rotate(struct rb_node *old, struct rb_node *new) {}
92016
92017 static const struct rb_augment_callbacks dummy_callbacks = {
92018- dummy_propagate, dummy_copy, dummy_rotate
92019+ .propagate = dummy_propagate,
92020+ .copy = dummy_copy,
92021+ .rotate = dummy_rotate
92022 };
92023
92024 void rb_insert_color(struct rb_node *node, struct rb_root *root)
92025diff --git a/lib/show_mem.c b/lib/show_mem.c
92026index 0922579..9d7adb9 100644
92027--- a/lib/show_mem.c
92028+++ b/lib/show_mem.c
92029@@ -44,6 +44,6 @@ void show_mem(unsigned int filter)
92030 quicklist_total_size());
92031 #endif
92032 #ifdef CONFIG_MEMORY_FAILURE
92033- printk("%lu pages hwpoisoned\n", atomic_long_read(&num_poisoned_pages));
92034+ printk("%lu pages hwpoisoned\n", atomic_long_read_unchecked(&num_poisoned_pages));
92035 #endif
92036 }
92037diff --git a/lib/strncpy_from_user.c b/lib/strncpy_from_user.c
92038index bb2b201..46abaf9 100644
92039--- a/lib/strncpy_from_user.c
92040+++ b/lib/strncpy_from_user.c
92041@@ -21,7 +21,7 @@
92042 */
92043 static inline long do_strncpy_from_user(char *dst, const char __user *src, long count, unsigned long max)
92044 {
92045- const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
92046+ static const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
92047 long res = 0;
92048
92049 /*
92050diff --git a/lib/strnlen_user.c b/lib/strnlen_user.c
92051index a28df52..3d55877 100644
92052--- a/lib/strnlen_user.c
92053+++ b/lib/strnlen_user.c
92054@@ -26,7 +26,7 @@
92055 */
92056 static inline long do_strnlen_user(const char __user *src, unsigned long count, unsigned long max)
92057 {
92058- const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
92059+ static const struct word_at_a_time constants = WORD_AT_A_TIME_CONSTANTS;
92060 long align, res = 0;
92061 unsigned long c;
92062
92063diff --git a/lib/swiotlb.c b/lib/swiotlb.c
92064index b604b83..c0547f6 100644
92065--- a/lib/swiotlb.c
92066+++ b/lib/swiotlb.c
92067@@ -674,7 +674,7 @@ EXPORT_SYMBOL(swiotlb_alloc_coherent);
92068
92069 void
92070 swiotlb_free_coherent(struct device *hwdev, size_t size, void *vaddr,
92071- dma_addr_t dev_addr)
92072+ dma_addr_t dev_addr, struct dma_attrs *attrs)
92073 {
92074 phys_addr_t paddr = dma_to_phys(hwdev, dev_addr);
92075
92076diff --git a/lib/usercopy.c b/lib/usercopy.c
92077index 4f5b1dd..7cab418 100644
92078--- a/lib/usercopy.c
92079+++ b/lib/usercopy.c
92080@@ -7,3 +7,9 @@ void copy_from_user_overflow(void)
92081 WARN(1, "Buffer overflow detected!\n");
92082 }
92083 EXPORT_SYMBOL(copy_from_user_overflow);
92084+
92085+void copy_to_user_overflow(void)
92086+{
92087+ WARN(1, "Buffer overflow detected!\n");
92088+}
92089+EXPORT_SYMBOL(copy_to_user_overflow);
92090diff --git a/lib/vsprintf.c b/lib/vsprintf.c
92091index 0648291..42bf42b 100644
92092--- a/lib/vsprintf.c
92093+++ b/lib/vsprintf.c
92094@@ -16,6 +16,9 @@
92095 * - scnprintf and vscnprintf
92096 */
92097
92098+#ifdef CONFIG_GRKERNSEC_HIDESYM
92099+#define __INCLUDED_BY_HIDESYM 1
92100+#endif
92101 #include <stdarg.h>
92102 #include <linux/module.h> /* for KSYM_SYMBOL_LEN */
92103 #include <linux/types.h>
92104@@ -1183,7 +1186,11 @@ char *address_val(char *buf, char *end, const void *addr,
92105 return number(buf, end, num, spec);
92106 }
92107
92108+#ifdef CONFIG_GRKERNSEC_HIDESYM
92109+int kptr_restrict __read_mostly = 2;
92110+#else
92111 int kptr_restrict __read_mostly;
92112+#endif
92113
92114 /*
92115 * Show a '%p' thing. A kernel extension is that the '%p' is followed
92116@@ -1196,6 +1203,7 @@ int kptr_restrict __read_mostly;
92117 * - 'f' For simple symbolic function names without offset
92118 * - 'S' For symbolic direct pointers with offset
92119 * - 's' For symbolic direct pointers without offset
92120+ * - 'A' For symbolic direct pointers with offset approved for use with GRKERNSEC_HIDESYM
92121 * - '[FfSs]R' as above with __builtin_extract_return_addr() translation
92122 * - 'B' For backtraced symbolic direct pointers with offset
92123 * - 'R' For decoded struct resource, e.g., [mem 0x0-0x1f 64bit pref]
92124@@ -1263,12 +1271,12 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
92125
92126 if (!ptr && *fmt != 'K') {
92127 /*
92128- * Print (null) with the same width as a pointer so it makes
92129+ * Print (nil) with the same width as a pointer so it makes
92130 * tabular output look nice.
92131 */
92132 if (spec.field_width == -1)
92133 spec.field_width = default_width;
92134- return string(buf, end, "(null)", spec);
92135+ return string(buf, end, "(nil)", spec);
92136 }
92137
92138 switch (*fmt) {
92139@@ -1278,6 +1286,12 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
92140 /* Fallthrough */
92141 case 'S':
92142 case 's':
92143+#ifdef CONFIG_GRKERNSEC_HIDESYM
92144+ break;
92145+#else
92146+ return symbol_string(buf, end, ptr, spec, fmt);
92147+#endif
92148+ case 'A':
92149 case 'B':
92150 return symbol_string(buf, end, ptr, spec, fmt);
92151 case 'R':
92152@@ -1333,6 +1347,8 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
92153 va_end(va);
92154 return buf;
92155 }
92156+ case 'P':
92157+ break;
92158 case 'K':
92159 /*
92160 * %pK cannot be used in IRQ context because its test
92161@@ -1390,6 +1406,21 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
92162 ((const struct file *)ptr)->f_path.dentry,
92163 spec, fmt);
92164 }
92165+
92166+#ifdef CONFIG_GRKERNSEC_HIDESYM
92167+ /* 'P' = approved pointers to copy to userland,
92168+ as in the /proc/kallsyms case, as we make it display nothing
92169+ for non-root users, and the real contents for root users
92170+ Also ignore 'K' pointers, since we force their NULLing for non-root users
92171+ above
92172+ */
92173+ if ((unsigned long)ptr > TASK_SIZE && *fmt != 'P' && *fmt != 'K' && is_usercopy_object(buf)) {
92174+ printk(KERN_ALERT "grsec: kernel infoleak detected! Please report this log to spender@grsecurity.net.\n");
92175+ dump_stack();
92176+ ptr = NULL;
92177+ }
92178+#endif
92179+
92180 spec.flags |= SMALL;
92181 if (spec.field_width == -1) {
92182 spec.field_width = default_width;
92183@@ -2089,11 +2120,11 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
92184 typeof(type) value; \
92185 if (sizeof(type) == 8) { \
92186 args = PTR_ALIGN(args, sizeof(u32)); \
92187- *(u32 *)&value = *(u32 *)args; \
92188- *((u32 *)&value + 1) = *(u32 *)(args + 4); \
92189+ *(u32 *)&value = *(const u32 *)args; \
92190+ *((u32 *)&value + 1) = *(const u32 *)(args + 4); \
92191 } else { \
92192 args = PTR_ALIGN(args, sizeof(type)); \
92193- value = *(typeof(type) *)args; \
92194+ value = *(const typeof(type) *)args; \
92195 } \
92196 args += sizeof(type); \
92197 value; \
92198@@ -2156,7 +2187,7 @@ int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf)
92199 case FORMAT_TYPE_STR: {
92200 const char *str_arg = args;
92201 args += strlen(str_arg) + 1;
92202- str = string(str, end, (char *)str_arg, spec);
92203+ str = string(str, end, str_arg, spec);
92204 break;
92205 }
92206
92207diff --git a/localversion-grsec b/localversion-grsec
92208new file mode 100644
92209index 0000000..7cd6065
92210--- /dev/null
92211+++ b/localversion-grsec
92212@@ -0,0 +1 @@
92213+-grsec
92214diff --git a/mm/Kconfig b/mm/Kconfig
92215index 2f42b9c..6095e14 100644
92216--- a/mm/Kconfig
92217+++ b/mm/Kconfig
92218@@ -330,10 +330,11 @@ config KSM
92219 root has set /sys/kernel/mm/ksm/run to 1 (if CONFIG_SYSFS is set).
92220
92221 config DEFAULT_MMAP_MIN_ADDR
92222- int "Low address space to protect from user allocation"
92223+ int "Low address space to protect from user allocation"
92224 depends on MMU
92225- default 4096
92226- help
92227+ default 32768 if ALPHA || ARM || PARISC || SPARC32
92228+ default 65536
92229+ help
92230 This is the portion of low virtual memory which should be protected
92231 from userspace allocation. Keeping a user from writing to low pages
92232 can help reduce the impact of kernel NULL pointer bugs.
92233@@ -364,7 +365,7 @@ config MEMORY_FAILURE
92234
92235 config HWPOISON_INJECT
92236 tristate "HWPoison pages injector"
92237- depends on MEMORY_FAILURE && DEBUG_KERNEL && PROC_FS
92238+ depends on MEMORY_FAILURE && DEBUG_KERNEL && PROC_FS && !GRKERNSEC
92239 select PROC_PAGE_MONITOR
92240
92241 config NOMMU_INITIAL_TRIM_EXCESS
92242diff --git a/mm/backing-dev.c b/mm/backing-dev.c
92243index 09d9591..165bb75 100644
92244--- a/mm/backing-dev.c
92245+++ b/mm/backing-dev.c
92246@@ -12,7 +12,7 @@
92247 #include <linux/device.h>
92248 #include <trace/events/writeback.h>
92249
92250-static atomic_long_t bdi_seq = ATOMIC_LONG_INIT(0);
92251+static atomic_long_unchecked_t bdi_seq = ATOMIC_LONG_INIT(0);
92252
92253 struct backing_dev_info default_backing_dev_info = {
92254 .name = "default",
92255@@ -533,7 +533,7 @@ int bdi_setup_and_register(struct backing_dev_info *bdi, char *name,
92256 return err;
92257
92258 err = bdi_register(bdi, NULL, "%.28s-%ld", name,
92259- atomic_long_inc_return(&bdi_seq));
92260+ atomic_long_inc_return_unchecked(&bdi_seq));
92261 if (err) {
92262 bdi_destroy(bdi);
92263 return err;
92264diff --git a/mm/filemap.c b/mm/filemap.c
92265index 088358c..bb415bf 100644
92266--- a/mm/filemap.c
92267+++ b/mm/filemap.c
92268@@ -2125,7 +2125,7 @@ int generic_file_mmap(struct file * file, struct vm_area_struct * vma)
92269 struct address_space *mapping = file->f_mapping;
92270
92271 if (!mapping->a_ops->readpage)
92272- return -ENOEXEC;
92273+ return -ENODEV;
92274 file_accessed(file);
92275 vma->vm_ops = &generic_file_vm_ops;
92276 return 0;
92277@@ -2303,6 +2303,7 @@ inline int generic_write_checks(struct file *file, loff_t *pos, size_t *count, i
92278 *pos = i_size_read(inode);
92279
92280 if (limit != RLIM_INFINITY) {
92281+ gr_learn_resource(current, RLIMIT_FSIZE,*pos, 0);
92282 if (*pos >= limit) {
92283 send_sig(SIGXFSZ, current, 0);
92284 return -EFBIG;
92285diff --git a/mm/fremap.c b/mm/fremap.c
92286index 34feba6..315fe78 100644
92287--- a/mm/fremap.c
92288+++ b/mm/fremap.c
92289@@ -179,6 +179,11 @@ SYSCALL_DEFINE5(remap_file_pages, unsigned long, start, unsigned long, size,
92290 retry:
92291 vma = find_vma(mm, start);
92292
92293+#ifdef CONFIG_PAX_SEGMEXEC
92294+ if (vma && (mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_flags & VM_MAYEXEC))
92295+ goto out;
92296+#endif
92297+
92298 /*
92299 * Make sure the vma is shared, that it supports prefaulting,
92300 * and that the remapped range is valid and fully within
92301diff --git a/mm/highmem.c b/mm/highmem.c
92302index b32b70c..e512eb0 100644
92303--- a/mm/highmem.c
92304+++ b/mm/highmem.c
92305@@ -138,8 +138,9 @@ static void flush_all_zero_pkmaps(void)
92306 * So no dangers, even with speculative execution.
92307 */
92308 page = pte_page(pkmap_page_table[i]);
92309+ pax_open_kernel();
92310 pte_clear(&init_mm, PKMAP_ADDR(i), &pkmap_page_table[i]);
92311-
92312+ pax_close_kernel();
92313 set_page_address(page, NULL);
92314 need_flush = 1;
92315 }
92316@@ -198,9 +199,11 @@ start:
92317 }
92318 }
92319 vaddr = PKMAP_ADDR(last_pkmap_nr);
92320+
92321+ pax_open_kernel();
92322 set_pte_at(&init_mm, vaddr,
92323 &(pkmap_page_table[last_pkmap_nr]), mk_pte(page, kmap_prot));
92324-
92325+ pax_close_kernel();
92326 pkmap_count[last_pkmap_nr] = 1;
92327 set_page_address(page, (void *)vaddr);
92328
92329diff --git a/mm/hugetlb.c b/mm/hugetlb.c
92330index c82290b..863d466 100644
92331--- a/mm/hugetlb.c
92332+++ b/mm/hugetlb.c
92333@@ -2107,6 +2107,7 @@ static int hugetlb_sysctl_handler_common(bool obey_mempolicy,
92334 struct hstate *h = &default_hstate;
92335 unsigned long tmp;
92336 int ret;
92337+ ctl_table_no_const hugetlb_table;
92338
92339 if (!hugepages_supported())
92340 return -ENOTSUPP;
92341@@ -2116,9 +2117,10 @@ static int hugetlb_sysctl_handler_common(bool obey_mempolicy,
92342 if (write && h->order >= MAX_ORDER)
92343 return -EINVAL;
92344
92345- table->data = &tmp;
92346- table->maxlen = sizeof(unsigned long);
92347- ret = proc_doulongvec_minmax(table, write, buffer, length, ppos);
92348+ hugetlb_table = *table;
92349+ hugetlb_table.data = &tmp;
92350+ hugetlb_table.maxlen = sizeof(unsigned long);
92351+ ret = proc_doulongvec_minmax(&hugetlb_table, write, buffer, length, ppos);
92352 if (ret)
92353 goto out;
92354
92355@@ -2163,6 +2165,7 @@ int hugetlb_overcommit_handler(struct ctl_table *table, int write,
92356 struct hstate *h = &default_hstate;
92357 unsigned long tmp;
92358 int ret;
92359+ ctl_table_no_const hugetlb_table;
92360
92361 if (!hugepages_supported())
92362 return -ENOTSUPP;
92363@@ -2172,9 +2175,10 @@ int hugetlb_overcommit_handler(struct ctl_table *table, int write,
92364 if (write && h->order >= MAX_ORDER)
92365 return -EINVAL;
92366
92367- table->data = &tmp;
92368- table->maxlen = sizeof(unsigned long);
92369- ret = proc_doulongvec_minmax(table, write, buffer, length, ppos);
92370+ hugetlb_table = *table;
92371+ hugetlb_table.data = &tmp;
92372+ hugetlb_table.maxlen = sizeof(unsigned long);
92373+ ret = proc_doulongvec_minmax(&hugetlb_table, write, buffer, length, ppos);
92374 if (ret)
92375 goto out;
92376
92377@@ -2639,6 +2643,27 @@ static int unmap_ref_private(struct mm_struct *mm, struct vm_area_struct *vma,
92378 return 1;
92379 }
92380
92381+#ifdef CONFIG_PAX_SEGMEXEC
92382+static void pax_mirror_huge_pte(struct vm_area_struct *vma, unsigned long address, struct page *page_m)
92383+{
92384+ struct mm_struct *mm = vma->vm_mm;
92385+ struct vm_area_struct *vma_m;
92386+ unsigned long address_m;
92387+ pte_t *ptep_m;
92388+
92389+ vma_m = pax_find_mirror_vma(vma);
92390+ if (!vma_m)
92391+ return;
92392+
92393+ BUG_ON(address >= SEGMEXEC_TASK_SIZE);
92394+ address_m = address + SEGMEXEC_TASK_SIZE;
92395+ ptep_m = huge_pte_offset(mm, address_m & HPAGE_MASK);
92396+ get_page(page_m);
92397+ hugepage_add_anon_rmap(page_m, vma_m, address_m);
92398+ set_huge_pte_at(mm, address_m, ptep_m, make_huge_pte(vma_m, page_m, 0));
92399+}
92400+#endif
92401+
92402 /*
92403 * Hugetlb_cow() should be called with page lock of the original hugepage held.
92404 * Called with hugetlb_instantiation_mutex held and pte_page locked so we
92405@@ -2756,6 +2781,11 @@ retry_avoidcopy:
92406 make_huge_pte(vma, new_page, 1));
92407 page_remove_rmap(old_page);
92408 hugepage_add_new_anon_rmap(new_page, vma, address);
92409+
92410+#ifdef CONFIG_PAX_SEGMEXEC
92411+ pax_mirror_huge_pte(vma, address, new_page);
92412+#endif
92413+
92414 /* Make the old page be freed below */
92415 new_page = old_page;
92416 }
92417@@ -2915,6 +2945,10 @@ retry:
92418 && (vma->vm_flags & VM_SHARED)));
92419 set_huge_pte_at(mm, address, ptep, new_pte);
92420
92421+#ifdef CONFIG_PAX_SEGMEXEC
92422+ pax_mirror_huge_pte(vma, address, page);
92423+#endif
92424+
92425 if ((flags & FAULT_FLAG_WRITE) && !(vma->vm_flags & VM_SHARED)) {
92426 /* Optimization, do the COW without a second fault */
92427 ret = hugetlb_cow(mm, vma, address, ptep, new_pte, page, ptl);
92428@@ -2981,6 +3015,10 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
92429 struct hstate *h = hstate_vma(vma);
92430 struct address_space *mapping;
92431
92432+#ifdef CONFIG_PAX_SEGMEXEC
92433+ struct vm_area_struct *vma_m;
92434+#endif
92435+
92436 address &= huge_page_mask(h);
92437
92438 ptep = huge_pte_offset(mm, address);
92439@@ -2994,6 +3032,26 @@ int hugetlb_fault(struct mm_struct *mm, struct vm_area_struct *vma,
92440 VM_FAULT_SET_HINDEX(hstate_index(h));
92441 }
92442
92443+#ifdef CONFIG_PAX_SEGMEXEC
92444+ vma_m = pax_find_mirror_vma(vma);
92445+ if (vma_m) {
92446+ unsigned long address_m;
92447+
92448+ if (vma->vm_start > vma_m->vm_start) {
92449+ address_m = address;
92450+ address -= SEGMEXEC_TASK_SIZE;
92451+ vma = vma_m;
92452+ h = hstate_vma(vma);
92453+ } else
92454+ address_m = address + SEGMEXEC_TASK_SIZE;
92455+
92456+ if (!huge_pte_alloc(mm, address_m, huge_page_size(h)))
92457+ return VM_FAULT_OOM;
92458+ address_m &= HPAGE_MASK;
92459+ unmap_hugepage_range(vma, address_m, address_m + HPAGE_SIZE, NULL);
92460+ }
92461+#endif
92462+
92463 ptep = huge_pte_alloc(mm, address, huge_page_size(h));
92464 if (!ptep)
92465 return VM_FAULT_OOM;
92466diff --git a/mm/internal.h b/mm/internal.h
92467index 07b6736..ae8da20 100644
92468--- a/mm/internal.h
92469+++ b/mm/internal.h
92470@@ -109,6 +109,7 @@ extern pmd_t *mm_find_pmd(struct mm_struct *mm, unsigned long address);
92471 * in mm/page_alloc.c
92472 */
92473 extern void __free_pages_bootmem(struct page *page, unsigned int order);
92474+extern void free_compound_page(struct page *page);
92475 extern void prep_compound_page(struct page *page, unsigned long order);
92476 #ifdef CONFIG_MEMORY_FAILURE
92477 extern bool is_free_buddy_page(struct page *page);
92478@@ -367,7 +368,7 @@ extern u32 hwpoison_filter_enable;
92479
92480 extern unsigned long vm_mmap_pgoff(struct file *, unsigned long,
92481 unsigned long, unsigned long,
92482- unsigned long, unsigned long);
92483+ unsigned long, unsigned long) __intentional_overflow(-1);
92484
92485 extern void set_pageblock_order(void);
92486 unsigned long reclaim_clean_pages_from_list(struct zone *zone,
92487diff --git a/mm/iov_iter.c b/mm/iov_iter.c
92488index 10e46cd..e3052f6 100644
92489--- a/mm/iov_iter.c
92490+++ b/mm/iov_iter.c
92491@@ -87,7 +87,7 @@ static size_t __iovec_copy_from_user_inatomic(char *vaddr,
92492
92493 while (bytes) {
92494 char __user *buf = iov->iov_base + base;
92495- int copy = min(bytes, iov->iov_len - base);
92496+ size_t copy = min(bytes, iov->iov_len - base);
92497
92498 base = 0;
92499 left = __copy_from_user_inatomic(vaddr, buf, copy);
92500@@ -115,7 +115,7 @@ size_t iov_iter_copy_from_user_atomic(struct page *page,
92501
92502 kaddr = kmap_atomic(page);
92503 if (likely(i->nr_segs == 1)) {
92504- int left;
92505+ size_t left;
92506 char __user *buf = i->iov->iov_base + i->iov_offset;
92507 left = __copy_from_user_inatomic(kaddr + offset, buf, bytes);
92508 copied = bytes - left;
92509@@ -143,7 +143,7 @@ size_t iov_iter_copy_from_user(struct page *page,
92510
92511 kaddr = kmap(page);
92512 if (likely(i->nr_segs == 1)) {
92513- int left;
92514+ size_t left;
92515 char __user *buf = i->iov->iov_base + i->iov_offset;
92516 left = __copy_from_user(kaddr + offset, buf, bytes);
92517 copied = bytes - left;
92518@@ -173,7 +173,7 @@ void iov_iter_advance(struct iov_iter *i, size_t bytes)
92519 * zero-length segments (without overruning the iovec).
92520 */
92521 while (bytes || unlikely(i->count && !iov->iov_len)) {
92522- int copy;
92523+ size_t copy;
92524
92525 copy = min(bytes, iov->iov_len - base);
92526 BUG_ON(!i->count || i->count < copy);
92527diff --git a/mm/kmemleak.c b/mm/kmemleak.c
92528index 8d2fcdf..6dd9f1a 100644
92529--- a/mm/kmemleak.c
92530+++ b/mm/kmemleak.c
92531@@ -364,7 +364,7 @@ static void print_unreferenced(struct seq_file *seq,
92532
92533 for (i = 0; i < object->trace_len; i++) {
92534 void *ptr = (void *)object->trace[i];
92535- seq_printf(seq, " [<%p>] %pS\n", ptr, ptr);
92536+ seq_printf(seq, " [<%pP>] %pA\n", ptr, ptr);
92537 }
92538 }
92539
92540@@ -1871,7 +1871,7 @@ static int __init kmemleak_late_init(void)
92541 return -ENOMEM;
92542 }
92543
92544- dentry = debugfs_create_file("kmemleak", S_IRUGO, NULL, NULL,
92545+ dentry = debugfs_create_file("kmemleak", S_IRUSR, NULL, NULL,
92546 &kmemleak_fops);
92547 if (!dentry)
92548 pr_warning("Failed to create the debugfs kmemleak file\n");
92549diff --git a/mm/maccess.c b/mm/maccess.c
92550index d53adf9..03a24bf 100644
92551--- a/mm/maccess.c
92552+++ b/mm/maccess.c
92553@@ -26,7 +26,7 @@ long __probe_kernel_read(void *dst, const void *src, size_t size)
92554 set_fs(KERNEL_DS);
92555 pagefault_disable();
92556 ret = __copy_from_user_inatomic(dst,
92557- (__force const void __user *)src, size);
92558+ (const void __force_user *)src, size);
92559 pagefault_enable();
92560 set_fs(old_fs);
92561
92562@@ -53,7 +53,7 @@ long __probe_kernel_write(void *dst, const void *src, size_t size)
92563
92564 set_fs(KERNEL_DS);
92565 pagefault_disable();
92566- ret = __copy_to_user_inatomic((__force void __user *)dst, src, size);
92567+ ret = __copy_to_user_inatomic((void __force_user *)dst, src, size);
92568 pagefault_enable();
92569 set_fs(old_fs);
92570
92571diff --git a/mm/madvise.c b/mm/madvise.c
92572index a402f8f..f5e5daa 100644
92573--- a/mm/madvise.c
92574+++ b/mm/madvise.c
92575@@ -51,6 +51,10 @@ static long madvise_behavior(struct vm_area_struct *vma,
92576 pgoff_t pgoff;
92577 unsigned long new_flags = vma->vm_flags;
92578
92579+#ifdef CONFIG_PAX_SEGMEXEC
92580+ struct vm_area_struct *vma_m;
92581+#endif
92582+
92583 switch (behavior) {
92584 case MADV_NORMAL:
92585 new_flags = new_flags & ~VM_RAND_READ & ~VM_SEQ_READ;
92586@@ -126,6 +130,13 @@ success:
92587 /*
92588 * vm_flags is protected by the mmap_sem held in write mode.
92589 */
92590+
92591+#ifdef CONFIG_PAX_SEGMEXEC
92592+ vma_m = pax_find_mirror_vma(vma);
92593+ if (vma_m)
92594+ vma_m->vm_flags = new_flags & ~(VM_WRITE | VM_MAYWRITE | VM_ACCOUNT);
92595+#endif
92596+
92597 vma->vm_flags = new_flags;
92598
92599 out:
92600@@ -274,6 +285,11 @@ static long madvise_dontneed(struct vm_area_struct *vma,
92601 struct vm_area_struct **prev,
92602 unsigned long start, unsigned long end)
92603 {
92604+
92605+#ifdef CONFIG_PAX_SEGMEXEC
92606+ struct vm_area_struct *vma_m;
92607+#endif
92608+
92609 *prev = vma;
92610 if (vma->vm_flags & (VM_LOCKED|VM_HUGETLB|VM_PFNMAP))
92611 return -EINVAL;
92612@@ -286,6 +302,21 @@ static long madvise_dontneed(struct vm_area_struct *vma,
92613 zap_page_range(vma, start, end - start, &details);
92614 } else
92615 zap_page_range(vma, start, end - start, NULL);
92616+
92617+#ifdef CONFIG_PAX_SEGMEXEC
92618+ vma_m = pax_find_mirror_vma(vma);
92619+ if (vma_m) {
92620+ if (unlikely(vma->vm_flags & VM_NONLINEAR)) {
92621+ struct zap_details details = {
92622+ .nonlinear_vma = vma_m,
92623+ .last_index = ULONG_MAX,
92624+ };
92625+ zap_page_range(vma, start + SEGMEXEC_TASK_SIZE, end - start, &details);
92626+ } else
92627+ zap_page_range(vma, start + SEGMEXEC_TASK_SIZE, end - start, NULL);
92628+ }
92629+#endif
92630+
92631 return 0;
92632 }
92633
92634@@ -491,6 +522,16 @@ SYSCALL_DEFINE3(madvise, unsigned long, start, size_t, len_in, int, behavior)
92635 if (end < start)
92636 return error;
92637
92638+#ifdef CONFIG_PAX_SEGMEXEC
92639+ if (current->mm->pax_flags & MF_PAX_SEGMEXEC) {
92640+ if (end > SEGMEXEC_TASK_SIZE)
92641+ return error;
92642+ } else
92643+#endif
92644+
92645+ if (end > TASK_SIZE)
92646+ return error;
92647+
92648 error = 0;
92649 if (end == start)
92650 return error;
92651diff --git a/mm/memory-failure.c b/mm/memory-failure.c
92652index eb8fb72..ae36cf3 100644
92653--- a/mm/memory-failure.c
92654+++ b/mm/memory-failure.c
92655@@ -61,7 +61,7 @@ int sysctl_memory_failure_early_kill __read_mostly = 0;
92656
92657 int sysctl_memory_failure_recovery __read_mostly = 1;
92658
92659-atomic_long_t num_poisoned_pages __read_mostly = ATOMIC_LONG_INIT(0);
92660+atomic_long_unchecked_t num_poisoned_pages __read_mostly = ATOMIC_LONG_INIT(0);
92661
92662 #if defined(CONFIG_HWPOISON_INJECT) || defined(CONFIG_HWPOISON_INJECT_MODULE)
92663
92664@@ -198,7 +198,7 @@ static int kill_proc(struct task_struct *t, unsigned long addr, int trapno,
92665 pfn, t->comm, t->pid);
92666 si.si_signo = SIGBUS;
92667 si.si_errno = 0;
92668- si.si_addr = (void *)addr;
92669+ si.si_addr = (void __user *)addr;
92670 #ifdef __ARCH_SI_TRAPNO
92671 si.si_trapno = trapno;
92672 #endif
92673@@ -791,7 +791,7 @@ static struct page_state {
92674 unsigned long res;
92675 char *msg;
92676 int (*action)(struct page *p, unsigned long pfn);
92677-} error_states[] = {
92678+} __do_const error_states[] = {
92679 { reserved, reserved, "reserved kernel", me_kernel },
92680 /*
92681 * free pages are specially detected outside this table:
92682@@ -1091,7 +1091,7 @@ int memory_failure(unsigned long pfn, int trapno, int flags)
92683 nr_pages = 1 << compound_order(hpage);
92684 else /* normal page or thp */
92685 nr_pages = 1;
92686- atomic_long_add(nr_pages, &num_poisoned_pages);
92687+ atomic_long_add_unchecked(nr_pages, &num_poisoned_pages);
92688
92689 /*
92690 * We need/can do nothing about count=0 pages.
92691@@ -1120,7 +1120,7 @@ int memory_failure(unsigned long pfn, int trapno, int flags)
92692 if (PageHWPoison(hpage)) {
92693 if ((hwpoison_filter(p) && TestClearPageHWPoison(p))
92694 || (p != hpage && TestSetPageHWPoison(hpage))) {
92695- atomic_long_sub(nr_pages, &num_poisoned_pages);
92696+ atomic_long_sub_unchecked(nr_pages, &num_poisoned_pages);
92697 unlock_page(hpage);
92698 return 0;
92699 }
92700@@ -1186,14 +1186,14 @@ int memory_failure(unsigned long pfn, int trapno, int flags)
92701 */
92702 if (!PageHWPoison(p)) {
92703 printk(KERN_ERR "MCE %#lx: just unpoisoned\n", pfn);
92704- atomic_long_sub(nr_pages, &num_poisoned_pages);
92705+ atomic_long_sub_unchecked(nr_pages, &num_poisoned_pages);
92706 put_page(hpage);
92707 res = 0;
92708 goto out;
92709 }
92710 if (hwpoison_filter(p)) {
92711 if (TestClearPageHWPoison(p))
92712- atomic_long_sub(nr_pages, &num_poisoned_pages);
92713+ atomic_long_sub_unchecked(nr_pages, &num_poisoned_pages);
92714 unlock_page(hpage);
92715 put_page(hpage);
92716 return 0;
92717@@ -1415,7 +1415,7 @@ int unpoison_memory(unsigned long pfn)
92718 return 0;
92719 }
92720 if (TestClearPageHWPoison(p))
92721- atomic_long_dec(&num_poisoned_pages);
92722+ atomic_long_dec_unchecked(&num_poisoned_pages);
92723 pr_info("MCE: Software-unpoisoned free page %#lx\n", pfn);
92724 return 0;
92725 }
92726@@ -1429,7 +1429,7 @@ int unpoison_memory(unsigned long pfn)
92727 */
92728 if (TestClearPageHWPoison(page)) {
92729 pr_info("MCE: Software-unpoisoned page %#lx\n", pfn);
92730- atomic_long_sub(nr_pages, &num_poisoned_pages);
92731+ atomic_long_sub_unchecked(nr_pages, &num_poisoned_pages);
92732 freeit = 1;
92733 if (PageHuge(page))
92734 clear_page_hwpoison_huge_page(page);
92735@@ -1554,11 +1554,11 @@ static int soft_offline_huge_page(struct page *page, int flags)
92736 if (PageHuge(page)) {
92737 set_page_hwpoison_huge_page(hpage);
92738 dequeue_hwpoisoned_huge_page(hpage);
92739- atomic_long_add(1 << compound_order(hpage),
92740+ atomic_long_add_unchecked(1 << compound_order(hpage),
92741 &num_poisoned_pages);
92742 } else {
92743 SetPageHWPoison(page);
92744- atomic_long_inc(&num_poisoned_pages);
92745+ atomic_long_inc_unchecked(&num_poisoned_pages);
92746 }
92747 }
92748 return ret;
92749@@ -1597,7 +1597,7 @@ static int __soft_offline_page(struct page *page, int flags)
92750 put_page(page);
92751 pr_info("soft_offline: %#lx: invalidated\n", pfn);
92752 SetPageHWPoison(page);
92753- atomic_long_inc(&num_poisoned_pages);
92754+ atomic_long_inc_unchecked(&num_poisoned_pages);
92755 return 0;
92756 }
92757
92758@@ -1648,7 +1648,7 @@ static int __soft_offline_page(struct page *page, int flags)
92759 if (!is_free_buddy_page(page))
92760 pr_info("soft offline: %#lx: page leaked\n",
92761 pfn);
92762- atomic_long_inc(&num_poisoned_pages);
92763+ atomic_long_inc_unchecked(&num_poisoned_pages);
92764 }
92765 } else {
92766 pr_info("soft offline: %#lx: isolation failed: %d, page count %d, type %lx\n",
92767@@ -1722,11 +1722,11 @@ int soft_offline_page(struct page *page, int flags)
92768 if (PageHuge(page)) {
92769 set_page_hwpoison_huge_page(hpage);
92770 dequeue_hwpoisoned_huge_page(hpage);
92771- atomic_long_add(1 << compound_order(hpage),
92772+ atomic_long_add_unchecked(1 << compound_order(hpage),
92773 &num_poisoned_pages);
92774 } else {
92775 SetPageHWPoison(page);
92776- atomic_long_inc(&num_poisoned_pages);
92777+ atomic_long_inc_unchecked(&num_poisoned_pages);
92778 }
92779 }
92780 unset_migratetype_isolate(page, MIGRATE_MOVABLE);
92781diff --git a/mm/memory.c b/mm/memory.c
92782index 037b812..948123c 100644
92783--- a/mm/memory.c
92784+++ b/mm/memory.c
92785@@ -413,6 +413,7 @@ static inline void free_pmd_range(struct mmu_gather *tlb, pud_t *pud,
92786 free_pte_range(tlb, pmd, addr);
92787 } while (pmd++, addr = next, addr != end);
92788
92789+#if !defined(CONFIG_X86_32) || !defined(CONFIG_PAX_PER_CPU_PGD)
92790 start &= PUD_MASK;
92791 if (start < floor)
92792 return;
92793@@ -427,6 +428,8 @@ static inline void free_pmd_range(struct mmu_gather *tlb, pud_t *pud,
92794 pmd = pmd_offset(pud, start);
92795 pud_clear(pud);
92796 pmd_free_tlb(tlb, pmd, start);
92797+#endif
92798+
92799 }
92800
92801 static inline void free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
92802@@ -446,6 +449,7 @@ static inline void free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
92803 free_pmd_range(tlb, pud, addr, next, floor, ceiling);
92804 } while (pud++, addr = next, addr != end);
92805
92806+#if !defined(CONFIG_X86_64) || !defined(CONFIG_PAX_PER_CPU_PGD)
92807 start &= PGDIR_MASK;
92808 if (start < floor)
92809 return;
92810@@ -460,6 +464,8 @@ static inline void free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
92811 pud = pud_offset(pgd, start);
92812 pgd_clear(pgd);
92813 pud_free_tlb(tlb, pud, start);
92814+#endif
92815+
92816 }
92817
92818 /*
92819@@ -1652,12 +1658,6 @@ no_page_table:
92820 return page;
92821 }
92822
92823-static inline int stack_guard_page(struct vm_area_struct *vma, unsigned long addr)
92824-{
92825- return stack_guard_page_start(vma, addr) ||
92826- stack_guard_page_end(vma, addr+PAGE_SIZE);
92827-}
92828-
92829 /**
92830 * __get_user_pages() - pin user pages in memory
92831 * @tsk: task_struct of target task
92832@@ -1735,10 +1735,10 @@ long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
92833
92834 i = 0;
92835
92836- do {
92837+ while (nr_pages) {
92838 struct vm_area_struct *vma;
92839
92840- vma = find_extend_vma(mm, start);
92841+ vma = find_vma(mm, start);
92842 if (!vma && in_gate_area(mm, start)) {
92843 unsigned long pg = start & PAGE_MASK;
92844 pgd_t *pgd;
92845@@ -1787,7 +1787,7 @@ long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
92846 goto next_page;
92847 }
92848
92849- if (!vma)
92850+ if (!vma || start < vma->vm_start)
92851 goto efault;
92852 vm_flags = vma->vm_flags;
92853 if (vm_flags & (VM_IO | VM_PFNMAP))
92854@@ -1848,11 +1848,6 @@ long __get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
92855 int ret;
92856 unsigned int fault_flags = 0;
92857
92858- /* For mlock, just skip the stack guard page. */
92859- if (foll_flags & FOLL_MLOCK) {
92860- if (stack_guard_page(vma, start))
92861- goto next_page;
92862- }
92863 if (foll_flags & FOLL_WRITE)
92864 fault_flags |= FAULT_FLAG_WRITE;
92865 if (nonblocking)
92866@@ -1932,7 +1927,7 @@ next_page:
92867 start += page_increm * PAGE_SIZE;
92868 nr_pages -= page_increm;
92869 } while (nr_pages && start < vma->vm_end);
92870- } while (nr_pages);
92871+ }
92872 return i;
92873 efault:
92874 return i ? : -EFAULT;
92875@@ -2145,6 +2140,10 @@ static int insert_page(struct vm_area_struct *vma, unsigned long addr,
92876 page_add_file_rmap(page);
92877 set_pte_at(mm, addr, pte, mk_pte(page, prot));
92878
92879+#ifdef CONFIG_PAX_SEGMEXEC
92880+ pax_mirror_file_pte(vma, addr, page, ptl);
92881+#endif
92882+
92883 retval = 0;
92884 pte_unmap_unlock(pte, ptl);
92885 return retval;
92886@@ -2189,9 +2188,21 @@ int vm_insert_page(struct vm_area_struct *vma, unsigned long addr,
92887 if (!page_count(page))
92888 return -EINVAL;
92889 if (!(vma->vm_flags & VM_MIXEDMAP)) {
92890+
92891+#ifdef CONFIG_PAX_SEGMEXEC
92892+ struct vm_area_struct *vma_m;
92893+#endif
92894+
92895 BUG_ON(down_read_trylock(&vma->vm_mm->mmap_sem));
92896 BUG_ON(vma->vm_flags & VM_PFNMAP);
92897 vma->vm_flags |= VM_MIXEDMAP;
92898+
92899+#ifdef CONFIG_PAX_SEGMEXEC
92900+ vma_m = pax_find_mirror_vma(vma);
92901+ if (vma_m)
92902+ vma_m->vm_flags |= VM_MIXEDMAP;
92903+#endif
92904+
92905 }
92906 return insert_page(vma, addr, page, vma->vm_page_prot);
92907 }
92908@@ -2274,6 +2285,7 @@ int vm_insert_mixed(struct vm_area_struct *vma, unsigned long addr,
92909 unsigned long pfn)
92910 {
92911 BUG_ON(!(vma->vm_flags & VM_MIXEDMAP));
92912+ BUG_ON(vma->vm_mirror);
92913
92914 if (addr < vma->vm_start || addr >= vma->vm_end)
92915 return -EFAULT;
92916@@ -2521,7 +2533,9 @@ static int apply_to_pmd_range(struct mm_struct *mm, pud_t *pud,
92917
92918 BUG_ON(pud_huge(*pud));
92919
92920- pmd = pmd_alloc(mm, pud, addr);
92921+ pmd = (mm == &init_mm) ?
92922+ pmd_alloc_kernel(mm, pud, addr) :
92923+ pmd_alloc(mm, pud, addr);
92924 if (!pmd)
92925 return -ENOMEM;
92926 do {
92927@@ -2541,7 +2555,9 @@ static int apply_to_pud_range(struct mm_struct *mm, pgd_t *pgd,
92928 unsigned long next;
92929 int err;
92930
92931- pud = pud_alloc(mm, pgd, addr);
92932+ pud = (mm == &init_mm) ?
92933+ pud_alloc_kernel(mm, pgd, addr) :
92934+ pud_alloc(mm, pgd, addr);
92935 if (!pud)
92936 return -ENOMEM;
92937 do {
92938@@ -2663,6 +2679,186 @@ static int do_page_mkwrite(struct vm_area_struct *vma, struct page *page,
92939 return ret;
92940 }
92941
92942+#ifdef CONFIG_PAX_SEGMEXEC
92943+static void pax_unmap_mirror_pte(struct vm_area_struct *vma, unsigned long address, pmd_t *pmd)
92944+{
92945+ struct mm_struct *mm = vma->vm_mm;
92946+ spinlock_t *ptl;
92947+ pte_t *pte, entry;
92948+
92949+ pte = pte_offset_map_lock(mm, pmd, address, &ptl);
92950+ entry = *pte;
92951+ if (!pte_present(entry)) {
92952+ if (!pte_none(entry)) {
92953+ BUG_ON(pte_file(entry));
92954+ free_swap_and_cache(pte_to_swp_entry(entry));
92955+ pte_clear_not_present_full(mm, address, pte, 0);
92956+ }
92957+ } else {
92958+ struct page *page;
92959+
92960+ flush_cache_page(vma, address, pte_pfn(entry));
92961+ entry = ptep_clear_flush(vma, address, pte);
92962+ BUG_ON(pte_dirty(entry));
92963+ page = vm_normal_page(vma, address, entry);
92964+ if (page) {
92965+ update_hiwater_rss(mm);
92966+ if (PageAnon(page))
92967+ dec_mm_counter_fast(mm, MM_ANONPAGES);
92968+ else
92969+ dec_mm_counter_fast(mm, MM_FILEPAGES);
92970+ page_remove_rmap(page);
92971+ page_cache_release(page);
92972+ }
92973+ }
92974+ pte_unmap_unlock(pte, ptl);
92975+}
92976+
92977+/* PaX: if vma is mirrored, synchronize the mirror's PTE
92978+ *
92979+ * the ptl of the lower mapped page is held on entry and is not released on exit
92980+ * or inside to ensure atomic changes to the PTE states (swapout, mremap, munmap, etc)
92981+ */
92982+static void pax_mirror_anon_pte(struct vm_area_struct *vma, unsigned long address, struct page *page_m, spinlock_t *ptl)
92983+{
92984+ struct mm_struct *mm = vma->vm_mm;
92985+ unsigned long address_m;
92986+ spinlock_t *ptl_m;
92987+ struct vm_area_struct *vma_m;
92988+ pmd_t *pmd_m;
92989+ pte_t *pte_m, entry_m;
92990+
92991+ BUG_ON(!page_m || !PageAnon(page_m));
92992+
92993+ vma_m = pax_find_mirror_vma(vma);
92994+ if (!vma_m)
92995+ return;
92996+
92997+ BUG_ON(!PageLocked(page_m));
92998+ BUG_ON(address >= SEGMEXEC_TASK_SIZE);
92999+ address_m = address + SEGMEXEC_TASK_SIZE;
93000+ pmd_m = pmd_offset(pud_offset(pgd_offset(mm, address_m), address_m), address_m);
93001+ pte_m = pte_offset_map(pmd_m, address_m);
93002+ ptl_m = pte_lockptr(mm, pmd_m);
93003+ if (ptl != ptl_m) {
93004+ spin_lock_nested(ptl_m, SINGLE_DEPTH_NESTING);
93005+ if (!pte_none(*pte_m))
93006+ goto out;
93007+ }
93008+
93009+ entry_m = pfn_pte(page_to_pfn(page_m), vma_m->vm_page_prot);
93010+ page_cache_get(page_m);
93011+ page_add_anon_rmap(page_m, vma_m, address_m);
93012+ inc_mm_counter_fast(mm, MM_ANONPAGES);
93013+ set_pte_at(mm, address_m, pte_m, entry_m);
93014+ update_mmu_cache(vma_m, address_m, pte_m);
93015+out:
93016+ if (ptl != ptl_m)
93017+ spin_unlock(ptl_m);
93018+ pte_unmap(pte_m);
93019+ unlock_page(page_m);
93020+}
93021+
93022+void pax_mirror_file_pte(struct vm_area_struct *vma, unsigned long address, struct page *page_m, spinlock_t *ptl)
93023+{
93024+ struct mm_struct *mm = vma->vm_mm;
93025+ unsigned long address_m;
93026+ spinlock_t *ptl_m;
93027+ struct vm_area_struct *vma_m;
93028+ pmd_t *pmd_m;
93029+ pte_t *pte_m, entry_m;
93030+
93031+ BUG_ON(!page_m || PageAnon(page_m));
93032+
93033+ vma_m = pax_find_mirror_vma(vma);
93034+ if (!vma_m)
93035+ return;
93036+
93037+ BUG_ON(address >= SEGMEXEC_TASK_SIZE);
93038+ address_m = address + SEGMEXEC_TASK_SIZE;
93039+ pmd_m = pmd_offset(pud_offset(pgd_offset(mm, address_m), address_m), address_m);
93040+ pte_m = pte_offset_map(pmd_m, address_m);
93041+ ptl_m = pte_lockptr(mm, pmd_m);
93042+ if (ptl != ptl_m) {
93043+ spin_lock_nested(ptl_m, SINGLE_DEPTH_NESTING);
93044+ if (!pte_none(*pte_m))
93045+ goto out;
93046+ }
93047+
93048+ entry_m = pfn_pte(page_to_pfn(page_m), vma_m->vm_page_prot);
93049+ page_cache_get(page_m);
93050+ page_add_file_rmap(page_m);
93051+ inc_mm_counter_fast(mm, MM_FILEPAGES);
93052+ set_pte_at(mm, address_m, pte_m, entry_m);
93053+ update_mmu_cache(vma_m, address_m, pte_m);
93054+out:
93055+ if (ptl != ptl_m)
93056+ spin_unlock(ptl_m);
93057+ pte_unmap(pte_m);
93058+}
93059+
93060+static void pax_mirror_pfn_pte(struct vm_area_struct *vma, unsigned long address, unsigned long pfn_m, spinlock_t *ptl)
93061+{
93062+ struct mm_struct *mm = vma->vm_mm;
93063+ unsigned long address_m;
93064+ spinlock_t *ptl_m;
93065+ struct vm_area_struct *vma_m;
93066+ pmd_t *pmd_m;
93067+ pte_t *pte_m, entry_m;
93068+
93069+ vma_m = pax_find_mirror_vma(vma);
93070+ if (!vma_m)
93071+ return;
93072+
93073+ BUG_ON(address >= SEGMEXEC_TASK_SIZE);
93074+ address_m = address + SEGMEXEC_TASK_SIZE;
93075+ pmd_m = pmd_offset(pud_offset(pgd_offset(mm, address_m), address_m), address_m);
93076+ pte_m = pte_offset_map(pmd_m, address_m);
93077+ ptl_m = pte_lockptr(mm, pmd_m);
93078+ if (ptl != ptl_m) {
93079+ spin_lock_nested(ptl_m, SINGLE_DEPTH_NESTING);
93080+ if (!pte_none(*pte_m))
93081+ goto out;
93082+ }
93083+
93084+ entry_m = pfn_pte(pfn_m, vma_m->vm_page_prot);
93085+ set_pte_at(mm, address_m, pte_m, entry_m);
93086+out:
93087+ if (ptl != ptl_m)
93088+ spin_unlock(ptl_m);
93089+ pte_unmap(pte_m);
93090+}
93091+
93092+static void pax_mirror_pte(struct vm_area_struct *vma, unsigned long address, pte_t *pte, pmd_t *pmd, spinlock_t *ptl)
93093+{
93094+ struct page *page_m;
93095+ pte_t entry;
93096+
93097+ if (!(vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC))
93098+ goto out;
93099+
93100+ entry = *pte;
93101+ page_m = vm_normal_page(vma, address, entry);
93102+ if (!page_m)
93103+ pax_mirror_pfn_pte(vma, address, pte_pfn(entry), ptl);
93104+ else if (PageAnon(page_m)) {
93105+ if (pax_find_mirror_vma(vma)) {
93106+ pte_unmap_unlock(pte, ptl);
93107+ lock_page(page_m);
93108+ pte = pte_offset_map_lock(vma->vm_mm, pmd, address, &ptl);
93109+ if (pte_same(entry, *pte))
93110+ pax_mirror_anon_pte(vma, address, page_m, ptl);
93111+ else
93112+ unlock_page(page_m);
93113+ }
93114+ } else
93115+ pax_mirror_file_pte(vma, address, page_m, ptl);
93116+
93117+out:
93118+ pte_unmap_unlock(pte, ptl);
93119+}
93120+#endif
93121+
93122 /*
93123 * This routine handles present pages, when users try to write
93124 * to a shared page. It is done by copying the page to a new address
93125@@ -2860,6 +3056,12 @@ gotten:
93126 */
93127 page_table = pte_offset_map_lock(mm, pmd, address, &ptl);
93128 if (likely(pte_same(*page_table, orig_pte))) {
93129+
93130+#ifdef CONFIG_PAX_SEGMEXEC
93131+ if (pax_find_mirror_vma(vma))
93132+ BUG_ON(!trylock_page(new_page));
93133+#endif
93134+
93135 if (old_page) {
93136 if (!PageAnon(old_page)) {
93137 dec_mm_counter_fast(mm, MM_FILEPAGES);
93138@@ -2911,6 +3113,10 @@ gotten:
93139 page_remove_rmap(old_page);
93140 }
93141
93142+#ifdef CONFIG_PAX_SEGMEXEC
93143+ pax_mirror_anon_pte(vma, address, new_page, ptl);
93144+#endif
93145+
93146 /* Free the old page.. */
93147 new_page = old_page;
93148 ret |= VM_FAULT_WRITE;
93149@@ -3184,6 +3390,11 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
93150 swap_free(entry);
93151 if (vm_swap_full() || (vma->vm_flags & VM_LOCKED) || PageMlocked(page))
93152 try_to_free_swap(page);
93153+
93154+#ifdef CONFIG_PAX_SEGMEXEC
93155+ if ((flags & FAULT_FLAG_WRITE) || !pax_find_mirror_vma(vma))
93156+#endif
93157+
93158 unlock_page(page);
93159 if (page != swapcache) {
93160 /*
93161@@ -3207,6 +3418,11 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
93162
93163 /* No need to invalidate - it was non-present before */
93164 update_mmu_cache(vma, address, page_table);
93165+
93166+#ifdef CONFIG_PAX_SEGMEXEC
93167+ pax_mirror_anon_pte(vma, address, page, ptl);
93168+#endif
93169+
93170 unlock:
93171 pte_unmap_unlock(page_table, ptl);
93172 out:
93173@@ -3226,40 +3442,6 @@ out_release:
93174 }
93175
93176 /*
93177- * This is like a special single-page "expand_{down|up}wards()",
93178- * except we must first make sure that 'address{-|+}PAGE_SIZE'
93179- * doesn't hit another vma.
93180- */
93181-static inline int check_stack_guard_page(struct vm_area_struct *vma, unsigned long address)
93182-{
93183- address &= PAGE_MASK;
93184- if ((vma->vm_flags & VM_GROWSDOWN) && address == vma->vm_start) {
93185- struct vm_area_struct *prev = vma->vm_prev;
93186-
93187- /*
93188- * Is there a mapping abutting this one below?
93189- *
93190- * That's only ok if it's the same stack mapping
93191- * that has gotten split..
93192- */
93193- if (prev && prev->vm_end == address)
93194- return prev->vm_flags & VM_GROWSDOWN ? 0 : -ENOMEM;
93195-
93196- expand_downwards(vma, address - PAGE_SIZE);
93197- }
93198- if ((vma->vm_flags & VM_GROWSUP) && address + PAGE_SIZE == vma->vm_end) {
93199- struct vm_area_struct *next = vma->vm_next;
93200-
93201- /* As VM_GROWSDOWN but s/below/above/ */
93202- if (next && next->vm_start == address + PAGE_SIZE)
93203- return next->vm_flags & VM_GROWSUP ? 0 : -ENOMEM;
93204-
93205- expand_upwards(vma, address + PAGE_SIZE);
93206- }
93207- return 0;
93208-}
93209-
93210-/*
93211 * We enter with non-exclusive mmap_sem (to exclude vma changes,
93212 * but allow concurrent faults), and pte mapped but not yet locked.
93213 * We return with mmap_sem still held, but pte unmapped and unlocked.
93214@@ -3268,27 +3450,23 @@ static int do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
93215 unsigned long address, pte_t *page_table, pmd_t *pmd,
93216 unsigned int flags)
93217 {
93218- struct page *page;
93219+ struct page *page = NULL;
93220 spinlock_t *ptl;
93221 pte_t entry;
93222
93223- pte_unmap(page_table);
93224-
93225- /* Check if we need to add a guard page to the stack */
93226- if (check_stack_guard_page(vma, address) < 0)
93227- return VM_FAULT_SIGBUS;
93228-
93229- /* Use the zero-page for reads */
93230 if (!(flags & FAULT_FLAG_WRITE)) {
93231 entry = pte_mkspecial(pfn_pte(my_zero_pfn(address),
93232 vma->vm_page_prot));
93233- page_table = pte_offset_map_lock(mm, pmd, address, &ptl);
93234+ ptl = pte_lockptr(mm, pmd);
93235+ spin_lock(ptl);
93236 if (!pte_none(*page_table))
93237 goto unlock;
93238 goto setpte;
93239 }
93240
93241 /* Allocate our own private page. */
93242+ pte_unmap(page_table);
93243+
93244 if (unlikely(anon_vma_prepare(vma)))
93245 goto oom;
93246 page = alloc_zeroed_user_highpage_movable(vma, address);
93247@@ -3312,6 +3490,11 @@ static int do_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma,
93248 if (!pte_none(*page_table))
93249 goto release;
93250
93251+#ifdef CONFIG_PAX_SEGMEXEC
93252+ if (pax_find_mirror_vma(vma))
93253+ BUG_ON(!trylock_page(page));
93254+#endif
93255+
93256 inc_mm_counter_fast(mm, MM_ANONPAGES);
93257 page_add_new_anon_rmap(page, vma, address);
93258 setpte:
93259@@ -3319,6 +3502,12 @@ setpte:
93260
93261 /* No need to invalidate - it was non-present before */
93262 update_mmu_cache(vma, address, page_table);
93263+
93264+#ifdef CONFIG_PAX_SEGMEXEC
93265+ if (page)
93266+ pax_mirror_anon_pte(vma, address, page, ptl);
93267+#endif
93268+
93269 unlock:
93270 pte_unmap_unlock(page_table, ptl);
93271 return 0;
93272@@ -3535,6 +3724,11 @@ static int do_read_fault(struct mm_struct *mm, struct vm_area_struct *vma,
93273 return ret;
93274 }
93275 do_set_pte(vma, address, fault_page, pte, false, false);
93276+
93277+#ifdef CONFIG_PAX_SEGMEXEC
93278+ pax_mirror_file_pte(vma, address, fault_page, ptl);
93279+#endif
93280+
93281 unlock_page(fault_page);
93282 unlock_out:
93283 pte_unmap_unlock(pte, ptl);
93284@@ -3576,7 +3770,18 @@ static int do_cow_fault(struct mm_struct *mm, struct vm_area_struct *vma,
93285 page_cache_release(fault_page);
93286 goto uncharge_out;
93287 }
93288+
93289+#ifdef CONFIG_PAX_SEGMEXEC
93290+ if (pax_find_mirror_vma(vma))
93291+ BUG_ON(!trylock_page(new_page));
93292+#endif
93293+
93294 do_set_pte(vma, address, new_page, pte, true, true);
93295+
93296+#ifdef CONFIG_PAX_SEGMEXEC
93297+ pax_mirror_anon_pte(vma, address, new_page, ptl);
93298+#endif
93299+
93300 pte_unmap_unlock(pte, ptl);
93301 unlock_page(fault_page);
93302 page_cache_release(fault_page);
93303@@ -3624,6 +3829,11 @@ static int do_shared_fault(struct mm_struct *mm, struct vm_area_struct *vma,
93304 return ret;
93305 }
93306 do_set_pte(vma, address, fault_page, pte, true, false);
93307+
93308+#ifdef CONFIG_PAX_SEGMEXEC
93309+ pax_mirror_file_pte(vma, address, fault_page, ptl);
93310+#endif
93311+
93312 pte_unmap_unlock(pte, ptl);
93313
93314 if (set_page_dirty(fault_page))
93315@@ -3854,6 +4064,12 @@ static int handle_pte_fault(struct mm_struct *mm,
93316 if (flags & FAULT_FLAG_WRITE)
93317 flush_tlb_fix_spurious_fault(vma, address);
93318 }
93319+
93320+#ifdef CONFIG_PAX_SEGMEXEC
93321+ pax_mirror_pte(vma, address, pte, pmd, ptl);
93322+ return 0;
93323+#endif
93324+
93325 unlock:
93326 pte_unmap_unlock(pte, ptl);
93327 return 0;
93328@@ -3870,9 +4086,41 @@ static int __handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma,
93329 pmd_t *pmd;
93330 pte_t *pte;
93331
93332+#ifdef CONFIG_PAX_SEGMEXEC
93333+ struct vm_area_struct *vma_m;
93334+#endif
93335+
93336 if (unlikely(is_vm_hugetlb_page(vma)))
93337 return hugetlb_fault(mm, vma, address, flags);
93338
93339+#ifdef CONFIG_PAX_SEGMEXEC
93340+ vma_m = pax_find_mirror_vma(vma);
93341+ if (vma_m) {
93342+ unsigned long address_m;
93343+ pgd_t *pgd_m;
93344+ pud_t *pud_m;
93345+ pmd_t *pmd_m;
93346+
93347+ if (vma->vm_start > vma_m->vm_start) {
93348+ address_m = address;
93349+ address -= SEGMEXEC_TASK_SIZE;
93350+ vma = vma_m;
93351+ } else
93352+ address_m = address + SEGMEXEC_TASK_SIZE;
93353+
93354+ pgd_m = pgd_offset(mm, address_m);
93355+ pud_m = pud_alloc(mm, pgd_m, address_m);
93356+ if (!pud_m)
93357+ return VM_FAULT_OOM;
93358+ pmd_m = pmd_alloc(mm, pud_m, address_m);
93359+ if (!pmd_m)
93360+ return VM_FAULT_OOM;
93361+ if (!pmd_present(*pmd_m) && __pte_alloc(mm, vma_m, pmd_m, address_m))
93362+ return VM_FAULT_OOM;
93363+ pax_unmap_mirror_pte(vma_m, address_m, pmd_m);
93364+ }
93365+#endif
93366+
93367 pgd = pgd_offset(mm, address);
93368 pud = pud_alloc(mm, pgd, address);
93369 if (!pud)
93370@@ -4003,6 +4251,23 @@ int __pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address)
93371 spin_unlock(&mm->page_table_lock);
93372 return 0;
93373 }
93374+
93375+int __pud_alloc_kernel(struct mm_struct *mm, pgd_t *pgd, unsigned long address)
93376+{
93377+ pud_t *new = pud_alloc_one(mm, address);
93378+ if (!new)
93379+ return -ENOMEM;
93380+
93381+ smp_wmb(); /* See comment in __pte_alloc */
93382+
93383+ spin_lock(&mm->page_table_lock);
93384+ if (pgd_present(*pgd)) /* Another has populated it */
93385+ pud_free(mm, new);
93386+ else
93387+ pgd_populate_kernel(mm, pgd, new);
93388+ spin_unlock(&mm->page_table_lock);
93389+ return 0;
93390+}
93391 #endif /* __PAGETABLE_PUD_FOLDED */
93392
93393 #ifndef __PAGETABLE_PMD_FOLDED
93394@@ -4033,6 +4298,30 @@ int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address)
93395 spin_unlock(&mm->page_table_lock);
93396 return 0;
93397 }
93398+
93399+int __pmd_alloc_kernel(struct mm_struct *mm, pud_t *pud, unsigned long address)
93400+{
93401+ pmd_t *new = pmd_alloc_one(mm, address);
93402+ if (!new)
93403+ return -ENOMEM;
93404+
93405+ smp_wmb(); /* See comment in __pte_alloc */
93406+
93407+ spin_lock(&mm->page_table_lock);
93408+#ifndef __ARCH_HAS_4LEVEL_HACK
93409+ if (pud_present(*pud)) /* Another has populated it */
93410+ pmd_free(mm, new);
93411+ else
93412+ pud_populate_kernel(mm, pud, new);
93413+#else
93414+ if (pgd_present(*pud)) /* Another has populated it */
93415+ pmd_free(mm, new);
93416+ else
93417+ pgd_populate_kernel(mm, pud, new);
93418+#endif /* __ARCH_HAS_4LEVEL_HACK */
93419+ spin_unlock(&mm->page_table_lock);
93420+ return 0;
93421+}
93422 #endif /* __PAGETABLE_PMD_FOLDED */
93423
93424 #if !defined(__HAVE_ARCH_GATE_AREA)
93425@@ -4046,7 +4335,7 @@ static int __init gate_vma_init(void)
93426 gate_vma.vm_start = FIXADDR_USER_START;
93427 gate_vma.vm_end = FIXADDR_USER_END;
93428 gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC;
93429- gate_vma.vm_page_prot = __P101;
93430+ gate_vma.vm_page_prot = vm_get_page_prot(gate_vma.vm_flags);
93431
93432 return 0;
93433 }
93434@@ -4180,8 +4469,8 @@ out:
93435 return ret;
93436 }
93437
93438-int generic_access_phys(struct vm_area_struct *vma, unsigned long addr,
93439- void *buf, int len, int write)
93440+ssize_t generic_access_phys(struct vm_area_struct *vma, unsigned long addr,
93441+ void *buf, size_t len, int write)
93442 {
93443 resource_size_t phys_addr;
93444 unsigned long prot = 0;
93445@@ -4207,8 +4496,8 @@ EXPORT_SYMBOL_GPL(generic_access_phys);
93446 * Access another process' address space as given in mm. If non-NULL, use the
93447 * given task for page fault accounting.
93448 */
93449-static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
93450- unsigned long addr, void *buf, int len, int write)
93451+static ssize_t __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
93452+ unsigned long addr, void *buf, size_t len, int write)
93453 {
93454 struct vm_area_struct *vma;
93455 void *old_buf = buf;
93456@@ -4216,7 +4505,7 @@ static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
93457 down_read(&mm->mmap_sem);
93458 /* ignore errors, just check how much was successfully transferred */
93459 while (len) {
93460- int bytes, ret, offset;
93461+ ssize_t bytes, ret, offset;
93462 void *maddr;
93463 struct page *page = NULL;
93464
93465@@ -4275,8 +4564,8 @@ static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
93466 *
93467 * The caller must hold a reference on @mm.
93468 */
93469-int access_remote_vm(struct mm_struct *mm, unsigned long addr,
93470- void *buf, int len, int write)
93471+ssize_t access_remote_vm(struct mm_struct *mm, unsigned long addr,
93472+ void *buf, size_t len, int write)
93473 {
93474 return __access_remote_vm(NULL, mm, addr, buf, len, write);
93475 }
93476@@ -4286,11 +4575,11 @@ int access_remote_vm(struct mm_struct *mm, unsigned long addr,
93477 * Source/target buffer must be kernel space,
93478 * Do not walk the page table directly, use get_user_pages
93479 */
93480-int access_process_vm(struct task_struct *tsk, unsigned long addr,
93481- void *buf, int len, int write)
93482+ssize_t access_process_vm(struct task_struct *tsk, unsigned long addr,
93483+ void *buf, size_t len, int write)
93484 {
93485 struct mm_struct *mm;
93486- int ret;
93487+ ssize_t ret;
93488
93489 mm = get_task_mm(tsk);
93490 if (!mm)
93491diff --git a/mm/mempolicy.c b/mm/mempolicy.c
93492index 30cc47f8..c12ef34 100644
93493--- a/mm/mempolicy.c
93494+++ b/mm/mempolicy.c
93495@@ -750,6 +750,10 @@ static int mbind_range(struct mm_struct *mm, unsigned long start,
93496 unsigned long vmstart;
93497 unsigned long vmend;
93498
93499+#ifdef CONFIG_PAX_SEGMEXEC
93500+ struct vm_area_struct *vma_m;
93501+#endif
93502+
93503 vma = find_vma(mm, start);
93504 if (!vma || vma->vm_start > start)
93505 return -EFAULT;
93506@@ -793,6 +797,16 @@ static int mbind_range(struct mm_struct *mm, unsigned long start,
93507 err = vma_replace_policy(vma, new_pol);
93508 if (err)
93509 goto out;
93510+
93511+#ifdef CONFIG_PAX_SEGMEXEC
93512+ vma_m = pax_find_mirror_vma(vma);
93513+ if (vma_m) {
93514+ err = vma_replace_policy(vma_m, new_pol);
93515+ if (err)
93516+ goto out;
93517+ }
93518+#endif
93519+
93520 }
93521
93522 out:
93523@@ -1225,6 +1239,17 @@ static long do_mbind(unsigned long start, unsigned long len,
93524
93525 if (end < start)
93526 return -EINVAL;
93527+
93528+#ifdef CONFIG_PAX_SEGMEXEC
93529+ if (mm->pax_flags & MF_PAX_SEGMEXEC) {
93530+ if (end > SEGMEXEC_TASK_SIZE)
93531+ return -EINVAL;
93532+ } else
93533+#endif
93534+
93535+ if (end > TASK_SIZE)
93536+ return -EINVAL;
93537+
93538 if (end == start)
93539 return 0;
93540
93541@@ -1453,8 +1478,7 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode,
93542 */
93543 tcred = __task_cred(task);
93544 if (!uid_eq(cred->euid, tcred->suid) && !uid_eq(cred->euid, tcred->uid) &&
93545- !uid_eq(cred->uid, tcred->suid) && !uid_eq(cred->uid, tcred->uid) &&
93546- !capable(CAP_SYS_NICE)) {
93547+ !uid_eq(cred->uid, tcred->suid) && !capable(CAP_SYS_NICE)) {
93548 rcu_read_unlock();
93549 err = -EPERM;
93550 goto out_put;
93551@@ -1485,6 +1509,15 @@ SYSCALL_DEFINE4(migrate_pages, pid_t, pid, unsigned long, maxnode,
93552 goto out;
93553 }
93554
93555+#ifdef CONFIG_GRKERNSEC_PROC_MEMMAP
93556+ if (mm != current->mm &&
93557+ (mm->pax_flags & MF_PAX_RANDMMAP || mm->pax_flags & MF_PAX_SEGMEXEC)) {
93558+ mmput(mm);
93559+ err = -EPERM;
93560+ goto out;
93561+ }
93562+#endif
93563+
93564 err = do_migrate_pages(mm, old, new,
93565 capable(CAP_SYS_NICE) ? MPOL_MF_MOVE_ALL : MPOL_MF_MOVE);
93566
93567diff --git a/mm/migrate.c b/mm/migrate.c
93568index bed4880..a493f67 100644
93569--- a/mm/migrate.c
93570+++ b/mm/migrate.c
93571@@ -1485,8 +1485,7 @@ SYSCALL_DEFINE6(move_pages, pid_t, pid, unsigned long, nr_pages,
93572 */
93573 tcred = __task_cred(task);
93574 if (!uid_eq(cred->euid, tcred->suid) && !uid_eq(cred->euid, tcred->uid) &&
93575- !uid_eq(cred->uid, tcred->suid) && !uid_eq(cred->uid, tcred->uid) &&
93576- !capable(CAP_SYS_NICE)) {
93577+ !uid_eq(cred->uid, tcred->suid) && !capable(CAP_SYS_NICE)) {
93578 rcu_read_unlock();
93579 err = -EPERM;
93580 goto out;
93581diff --git a/mm/mlock.c b/mm/mlock.c
93582index b1eb536..091d154 100644
93583--- a/mm/mlock.c
93584+++ b/mm/mlock.c
93585@@ -14,6 +14,7 @@
93586 #include <linux/pagevec.h>
93587 #include <linux/mempolicy.h>
93588 #include <linux/syscalls.h>
93589+#include <linux/security.h>
93590 #include <linux/sched.h>
93591 #include <linux/export.h>
93592 #include <linux/rmap.h>
93593@@ -606,7 +607,7 @@ static int do_mlock(unsigned long start, size_t len, int on)
93594 {
93595 unsigned long nstart, end, tmp;
93596 struct vm_area_struct * vma, * prev;
93597- int error;
93598+ int error = 0;
93599
93600 VM_BUG_ON(start & ~PAGE_MASK);
93601 VM_BUG_ON(len != PAGE_ALIGN(len));
93602@@ -615,6 +616,9 @@ static int do_mlock(unsigned long start, size_t len, int on)
93603 return -EINVAL;
93604 if (end == start)
93605 return 0;
93606+ if (end > TASK_SIZE)
93607+ return -EINVAL;
93608+
93609 vma = find_vma(current->mm, start);
93610 if (!vma || vma->vm_start > start)
93611 return -ENOMEM;
93612@@ -626,6 +630,11 @@ static int do_mlock(unsigned long start, size_t len, int on)
93613 for (nstart = start ; ; ) {
93614 vm_flags_t newflags;
93615
93616+#ifdef CONFIG_PAX_SEGMEXEC
93617+ if ((current->mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_start >= SEGMEXEC_TASK_SIZE))
93618+ break;
93619+#endif
93620+
93621 /* Here we know that vma->vm_start <= nstart < vma->vm_end. */
93622
93623 newflags = vma->vm_flags & ~VM_LOCKED;
93624@@ -739,6 +748,7 @@ SYSCALL_DEFINE2(mlock, unsigned long, start, size_t, len)
93625 locked += current->mm->locked_vm;
93626
93627 /* check against resource limits */
93628+ gr_learn_resource(current, RLIMIT_MEMLOCK, (current->mm->locked_vm << PAGE_SHIFT) + len, 1);
93629 if ((locked <= lock_limit) || capable(CAP_IPC_LOCK))
93630 error = do_mlock(start, len, 1);
93631
93632@@ -776,6 +786,11 @@ static int do_mlockall(int flags)
93633 for (vma = current->mm->mmap; vma ; vma = prev->vm_next) {
93634 vm_flags_t newflags;
93635
93636+#ifdef CONFIG_PAX_SEGMEXEC
93637+ if ((current->mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_start >= SEGMEXEC_TASK_SIZE))
93638+ break;
93639+#endif
93640+
93641 newflags = vma->vm_flags & ~VM_LOCKED;
93642 if (flags & MCL_CURRENT)
93643 newflags |= VM_LOCKED;
93644@@ -807,8 +822,10 @@ SYSCALL_DEFINE1(mlockall, int, flags)
93645 lock_limit >>= PAGE_SHIFT;
93646
93647 ret = -ENOMEM;
93648+
93649+ gr_learn_resource(current, RLIMIT_MEMLOCK, current->mm->total_vm << PAGE_SHIFT, 1);
93650+
93651 down_write(&current->mm->mmap_sem);
93652-
93653 if (!(flags & MCL_CURRENT) || (current->mm->total_vm <= lock_limit) ||
93654 capable(CAP_IPC_LOCK))
93655 ret = do_mlockall(flags);
93656diff --git a/mm/mmap.c b/mm/mmap.c
93657index b1202cf..ee487f8 100644
93658--- a/mm/mmap.c
93659+++ b/mm/mmap.c
93660@@ -37,6 +37,7 @@
93661 #include <linux/sched/sysctl.h>
93662 #include <linux/notifier.h>
93663 #include <linux/memory.h>
93664+#include <linux/random.h>
93665
93666 #include <asm/uaccess.h>
93667 #include <asm/cacheflush.h>
93668@@ -53,6 +54,16 @@
93669 #define arch_rebalance_pgtables(addr, len) (addr)
93670 #endif
93671
93672+static inline void verify_mm_writelocked(struct mm_struct *mm)
93673+{
93674+#if defined(CONFIG_DEBUG_VM) || defined(CONFIG_PAX)
93675+ if (unlikely(down_read_trylock(&mm->mmap_sem))) {
93676+ up_read(&mm->mmap_sem);
93677+ BUG();
93678+ }
93679+#endif
93680+}
93681+
93682 static void unmap_region(struct mm_struct *mm,
93683 struct vm_area_struct *vma, struct vm_area_struct *prev,
93684 unsigned long start, unsigned long end);
93685@@ -72,16 +83,25 @@ static void unmap_region(struct mm_struct *mm,
93686 * x: (no) no x: (no) yes x: (no) yes x: (yes) yes
93687 *
93688 */
93689-pgprot_t protection_map[16] = {
93690+pgprot_t protection_map[16] __read_only = {
93691 __P000, __P001, __P010, __P011, __P100, __P101, __P110, __P111,
93692 __S000, __S001, __S010, __S011, __S100, __S101, __S110, __S111
93693 };
93694
93695-pgprot_t vm_get_page_prot(unsigned long vm_flags)
93696+pgprot_t vm_get_page_prot(vm_flags_t vm_flags)
93697 {
93698- return __pgprot(pgprot_val(protection_map[vm_flags &
93699+ pgprot_t prot = __pgprot(pgprot_val(protection_map[vm_flags &
93700 (VM_READ|VM_WRITE|VM_EXEC|VM_SHARED)]) |
93701 pgprot_val(arch_vm_get_page_prot(vm_flags)));
93702+
93703+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_X86_32)
93704+ if (!(__supported_pte_mask & _PAGE_NX) &&
93705+ (vm_flags & (VM_PAGEEXEC | VM_EXEC)) == VM_PAGEEXEC &&
93706+ (vm_flags & (VM_READ | VM_WRITE)))
93707+ prot = __pgprot(pte_val(pte_exprotect(__pte(pgprot_val(prot)))));
93708+#endif
93709+
93710+ return prot;
93711 }
93712 EXPORT_SYMBOL(vm_get_page_prot);
93713
93714@@ -91,6 +111,7 @@ unsigned long sysctl_overcommit_kbytes __read_mostly;
93715 int sysctl_max_map_count __read_mostly = DEFAULT_MAX_MAP_COUNT;
93716 unsigned long sysctl_user_reserve_kbytes __read_mostly = 1UL << 17; /* 128MB */
93717 unsigned long sysctl_admin_reserve_kbytes __read_mostly = 1UL << 13; /* 8MB */
93718+unsigned long sysctl_heap_stack_gap __read_mostly = 64*1024;
93719 /*
93720 * Make sure vm_committed_as in one cacheline and not cacheline shared with
93721 * other variables. It can be updated by several CPUs frequently.
93722@@ -247,6 +268,7 @@ static struct vm_area_struct *remove_vma(struct vm_area_struct *vma)
93723 struct vm_area_struct *next = vma->vm_next;
93724
93725 might_sleep();
93726+ BUG_ON(vma->vm_mirror);
93727 if (vma->vm_ops && vma->vm_ops->close)
93728 vma->vm_ops->close(vma);
93729 if (vma->vm_file)
93730@@ -291,6 +313,7 @@ SYSCALL_DEFINE1(brk, unsigned long, brk)
93731 * not page aligned -Ram Gupta
93732 */
93733 rlim = rlimit(RLIMIT_DATA);
93734+ gr_learn_resource(current, RLIMIT_DATA, (brk - mm->start_brk) + (mm->end_data - mm->start_data), 1);
93735 if (rlim < RLIM_INFINITY && (brk - mm->start_brk) +
93736 (mm->end_data - mm->start_data) > rlim)
93737 goto out;
93738@@ -942,6 +965,12 @@ static int
93739 can_vma_merge_before(struct vm_area_struct *vma, unsigned long vm_flags,
93740 struct anon_vma *anon_vma, struct file *file, pgoff_t vm_pgoff)
93741 {
93742+
93743+#ifdef CONFIG_PAX_SEGMEXEC
93744+ if ((vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_start == SEGMEXEC_TASK_SIZE)
93745+ return 0;
93746+#endif
93747+
93748 if (is_mergeable_vma(vma, file, vm_flags) &&
93749 is_mergeable_anon_vma(anon_vma, vma->anon_vma, vma)) {
93750 if (vma->vm_pgoff == vm_pgoff)
93751@@ -961,6 +990,12 @@ static int
93752 can_vma_merge_after(struct vm_area_struct *vma, unsigned long vm_flags,
93753 struct anon_vma *anon_vma, struct file *file, pgoff_t vm_pgoff)
93754 {
93755+
93756+#ifdef CONFIG_PAX_SEGMEXEC
93757+ if ((vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC) && vma->vm_end == SEGMEXEC_TASK_SIZE)
93758+ return 0;
93759+#endif
93760+
93761 if (is_mergeable_vma(vma, file, vm_flags) &&
93762 is_mergeable_anon_vma(anon_vma, vma->anon_vma, vma)) {
93763 pgoff_t vm_pglen;
93764@@ -1003,13 +1038,20 @@ can_vma_merge_after(struct vm_area_struct *vma, unsigned long vm_flags,
93765 struct vm_area_struct *vma_merge(struct mm_struct *mm,
93766 struct vm_area_struct *prev, unsigned long addr,
93767 unsigned long end, unsigned long vm_flags,
93768- struct anon_vma *anon_vma, struct file *file,
93769+ struct anon_vma *anon_vma, struct file *file,
93770 pgoff_t pgoff, struct mempolicy *policy)
93771 {
93772 pgoff_t pglen = (end - addr) >> PAGE_SHIFT;
93773 struct vm_area_struct *area, *next;
93774 int err;
93775
93776+#ifdef CONFIG_PAX_SEGMEXEC
93777+ unsigned long addr_m = addr + SEGMEXEC_TASK_SIZE, end_m = end + SEGMEXEC_TASK_SIZE;
93778+ struct vm_area_struct *area_m = NULL, *next_m = NULL, *prev_m = NULL;
93779+
93780+ BUG_ON((mm->pax_flags & MF_PAX_SEGMEXEC) && SEGMEXEC_TASK_SIZE < end);
93781+#endif
93782+
93783 /*
93784 * We later require that vma->vm_flags == vm_flags,
93785 * so this tests vma->vm_flags & VM_SPECIAL, too.
93786@@ -1025,6 +1067,15 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
93787 if (next && next->vm_end == end) /* cases 6, 7, 8 */
93788 next = next->vm_next;
93789
93790+#ifdef CONFIG_PAX_SEGMEXEC
93791+ if (prev)
93792+ prev_m = pax_find_mirror_vma(prev);
93793+ if (area)
93794+ area_m = pax_find_mirror_vma(area);
93795+ if (next)
93796+ next_m = pax_find_mirror_vma(next);
93797+#endif
93798+
93799 /*
93800 * Can it merge with the predecessor?
93801 */
93802@@ -1044,9 +1095,24 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
93803 /* cases 1, 6 */
93804 err = vma_adjust(prev, prev->vm_start,
93805 next->vm_end, prev->vm_pgoff, NULL);
93806- } else /* cases 2, 5, 7 */
93807+
93808+#ifdef CONFIG_PAX_SEGMEXEC
93809+ if (!err && prev_m)
93810+ err = vma_adjust(prev_m, prev_m->vm_start,
93811+ next_m->vm_end, prev_m->vm_pgoff, NULL);
93812+#endif
93813+
93814+ } else { /* cases 2, 5, 7 */
93815 err = vma_adjust(prev, prev->vm_start,
93816 end, prev->vm_pgoff, NULL);
93817+
93818+#ifdef CONFIG_PAX_SEGMEXEC
93819+ if (!err && prev_m)
93820+ err = vma_adjust(prev_m, prev_m->vm_start,
93821+ end_m, prev_m->vm_pgoff, NULL);
93822+#endif
93823+
93824+ }
93825 if (err)
93826 return NULL;
93827 khugepaged_enter_vma_merge(prev);
93828@@ -1060,12 +1126,27 @@ struct vm_area_struct *vma_merge(struct mm_struct *mm,
93829 mpol_equal(policy, vma_policy(next)) &&
93830 can_vma_merge_before(next, vm_flags,
93831 anon_vma, file, pgoff+pglen)) {
93832- if (prev && addr < prev->vm_end) /* case 4 */
93833+ if (prev && addr < prev->vm_end) { /* case 4 */
93834 err = vma_adjust(prev, prev->vm_start,
93835 addr, prev->vm_pgoff, NULL);
93836- else /* cases 3, 8 */
93837+
93838+#ifdef CONFIG_PAX_SEGMEXEC
93839+ if (!err && prev_m)
93840+ err = vma_adjust(prev_m, prev_m->vm_start,
93841+ addr_m, prev_m->vm_pgoff, NULL);
93842+#endif
93843+
93844+ } else { /* cases 3, 8 */
93845 err = vma_adjust(area, addr, next->vm_end,
93846 next->vm_pgoff - pglen, NULL);
93847+
93848+#ifdef CONFIG_PAX_SEGMEXEC
93849+ if (!err && area_m)
93850+ err = vma_adjust(area_m, addr_m, next_m->vm_end,
93851+ next_m->vm_pgoff - pglen, NULL);
93852+#endif
93853+
93854+ }
93855 if (err)
93856 return NULL;
93857 khugepaged_enter_vma_merge(area);
93858@@ -1174,8 +1255,10 @@ none:
93859 void vm_stat_account(struct mm_struct *mm, unsigned long flags,
93860 struct file *file, long pages)
93861 {
93862- const unsigned long stack_flags
93863- = VM_STACK_FLAGS & (VM_GROWSUP|VM_GROWSDOWN);
93864+
93865+#ifdef CONFIG_PAX_RANDMMAP
93866+ if (!(mm->pax_flags & MF_PAX_RANDMMAP) || (flags & (VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)))
93867+#endif
93868
93869 mm->total_vm += pages;
93870
93871@@ -1183,7 +1266,7 @@ void vm_stat_account(struct mm_struct *mm, unsigned long flags,
93872 mm->shared_vm += pages;
93873 if ((flags & (VM_EXEC|VM_WRITE)) == VM_EXEC)
93874 mm->exec_vm += pages;
93875- } else if (flags & stack_flags)
93876+ } else if (flags & (VM_GROWSUP|VM_GROWSDOWN))
93877 mm->stack_vm += pages;
93878 }
93879 #endif /* CONFIG_PROC_FS */
93880@@ -1213,6 +1296,7 @@ static inline int mlock_future_check(struct mm_struct *mm,
93881 locked += mm->locked_vm;
93882 lock_limit = rlimit(RLIMIT_MEMLOCK);
93883 lock_limit >>= PAGE_SHIFT;
93884+ gr_learn_resource(current, RLIMIT_MEMLOCK, locked << PAGE_SHIFT, 1);
93885 if (locked > lock_limit && !capable(CAP_IPC_LOCK))
93886 return -EAGAIN;
93887 }
93888@@ -1239,7 +1323,7 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
93889 * (the exception is when the underlying filesystem is noexec
93890 * mounted, in which case we dont add PROT_EXEC.)
93891 */
93892- if ((prot & PROT_READ) && (current->personality & READ_IMPLIES_EXEC))
93893+ if ((prot & (PROT_READ | PROT_WRITE)) && (current->personality & READ_IMPLIES_EXEC))
93894 if (!(file && (file->f_path.mnt->mnt_flags & MNT_NOEXEC)))
93895 prot |= PROT_EXEC;
93896
93897@@ -1265,7 +1349,7 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
93898 /* Obtain the address to map to. we verify (or select) it and ensure
93899 * that it represents a valid section of the address space.
93900 */
93901- addr = get_unmapped_area(file, addr, len, pgoff, flags);
93902+ addr = get_unmapped_area(file, addr, len, pgoff, flags | ((prot & PROT_EXEC) ? MAP_EXECUTABLE : 0));
93903 if (addr & ~PAGE_MASK)
93904 return addr;
93905
93906@@ -1276,6 +1360,43 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
93907 vm_flags = calc_vm_prot_bits(prot) | calc_vm_flag_bits(flags) |
93908 mm->def_flags | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC;
93909
93910+#ifdef CONFIG_PAX_MPROTECT
93911+ if (mm->pax_flags & MF_PAX_MPROTECT) {
93912+
93913+#ifdef CONFIG_GRKERNSEC_RWXMAP_LOG
93914+ if (file && !pgoff && (vm_flags & VM_EXEC) && mm->binfmt &&
93915+ mm->binfmt->handle_mmap)
93916+ mm->binfmt->handle_mmap(file);
93917+#endif
93918+
93919+#ifndef CONFIG_PAX_MPROTECT_COMPAT
93920+ if ((vm_flags & (VM_WRITE | VM_EXEC)) == (VM_WRITE | VM_EXEC)) {
93921+ gr_log_rwxmmap(file);
93922+
93923+#ifdef CONFIG_PAX_EMUPLT
93924+ vm_flags &= ~VM_EXEC;
93925+#else
93926+ return -EPERM;
93927+#endif
93928+
93929+ }
93930+
93931+ if (!(vm_flags & VM_EXEC))
93932+ vm_flags &= ~VM_MAYEXEC;
93933+#else
93934+ if ((vm_flags & (VM_WRITE | VM_EXEC)) != VM_EXEC)
93935+ vm_flags &= ~(VM_EXEC | VM_MAYEXEC);
93936+#endif
93937+ else
93938+ vm_flags &= ~VM_MAYWRITE;
93939+ }
93940+#endif
93941+
93942+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_X86_32)
93943+ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && file)
93944+ vm_flags &= ~VM_PAGEEXEC;
93945+#endif
93946+
93947 if (flags & MAP_LOCKED)
93948 if (!can_do_mlock())
93949 return -EPERM;
93950@@ -1363,6 +1484,9 @@ unsigned long do_mmap_pgoff(struct file *file, unsigned long addr,
93951 vm_flags |= VM_NORESERVE;
93952 }
93953
93954+ if (!gr_acl_handle_mmap(file, prot))
93955+ return -EACCES;
93956+
93957 addr = mmap_region(file, addr, len, vm_flags, pgoff);
93958 if (!IS_ERR_VALUE(addr) &&
93959 ((vm_flags & VM_LOCKED) ||
93960@@ -1456,7 +1580,7 @@ int vma_wants_writenotify(struct vm_area_struct *vma)
93961 vm_flags_t vm_flags = vma->vm_flags;
93962
93963 /* If it was private or non-writable, the write bit is already clear */
93964- if ((vm_flags & (VM_WRITE|VM_SHARED)) != ((VM_WRITE|VM_SHARED)))
93965+ if ((vm_flags & (VM_WRITE|VM_SHARED)) != (VM_WRITE|VM_SHARED))
93966 return 0;
93967
93968 /* The backer wishes to know when pages are first written to? */
93969@@ -1502,7 +1626,22 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
93970 struct rb_node **rb_link, *rb_parent;
93971 unsigned long charged = 0;
93972
93973+#ifdef CONFIG_PAX_SEGMEXEC
93974+ struct vm_area_struct *vma_m = NULL;
93975+#endif
93976+
93977+ /*
93978+ * mm->mmap_sem is required to protect against another thread
93979+ * changing the mappings in case we sleep.
93980+ */
93981+ verify_mm_writelocked(mm);
93982+
93983 /* Check against address space limit. */
93984+
93985+#ifdef CONFIG_PAX_RANDMMAP
93986+ if (!(mm->pax_flags & MF_PAX_RANDMMAP) || (vm_flags & (VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)))
93987+#endif
93988+
93989 if (!may_expand_vm(mm, len >> PAGE_SHIFT)) {
93990 unsigned long nr_pages;
93991
93992@@ -1521,11 +1660,10 @@ unsigned long mmap_region(struct file *file, unsigned long addr,
93993
93994 /* Clear old maps */
93995 error = -ENOMEM;
93996-munmap_back:
93997 if (find_vma_links(mm, addr, addr + len, &prev, &rb_link, &rb_parent)) {
93998 if (do_munmap(mm, addr, len))
93999 return -ENOMEM;
94000- goto munmap_back;
94001+ BUG_ON(find_vma_links(mm, addr, addr + len, &prev, &rb_link, &rb_parent));
94002 }
94003
94004 /*
94005@@ -1556,6 +1694,16 @@ munmap_back:
94006 goto unacct_error;
94007 }
94008
94009+#ifdef CONFIG_PAX_SEGMEXEC
94010+ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (vm_flags & VM_EXEC)) {
94011+ vma_m = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
94012+ if (!vma_m) {
94013+ error = -ENOMEM;
94014+ goto free_vma;
94015+ }
94016+ }
94017+#endif
94018+
94019 vma->vm_mm = mm;
94020 vma->vm_start = addr;
94021 vma->vm_end = addr + len;
94022@@ -1575,6 +1723,13 @@ munmap_back:
94023 if (error)
94024 goto unmap_and_free_vma;
94025
94026+#if defined(CONFIG_PAX_PAGEEXEC) && defined(CONFIG_X86_32)
94027+ if ((mm->pax_flags & MF_PAX_PAGEEXEC) && !(vma->vm_flags & VM_SPECIAL)) {
94028+ vma->vm_flags |= VM_PAGEEXEC;
94029+ vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
94030+ }
94031+#endif
94032+
94033 /* Can addr have changed??
94034 *
94035 * Answer: Yes, several device drivers can do it in their
94036@@ -1608,6 +1763,12 @@ munmap_back:
94037 }
94038
94039 vma_link(mm, vma, prev, rb_link, rb_parent);
94040+
94041+#ifdef CONFIG_PAX_SEGMEXEC
94042+ if (vma_m)
94043+ BUG_ON(pax_mirror_vma(vma_m, vma));
94044+#endif
94045+
94046 /* Once vma denies write, undo our temporary denial count */
94047 if (vm_flags & VM_DENYWRITE)
94048 allow_write_access(file);
94049@@ -1616,6 +1777,7 @@ out:
94050 perf_event_mmap(vma);
94051
94052 vm_stat_account(mm, vm_flags, file, len >> PAGE_SHIFT);
94053+ track_exec_limit(mm, addr, addr + len, vm_flags);
94054 if (vm_flags & VM_LOCKED) {
94055 if (!((vm_flags & VM_SPECIAL) || is_vm_hugetlb_page(vma) ||
94056 vma == get_gate_vma(current->mm)))
94057@@ -1648,6 +1810,12 @@ unmap_and_free_vma:
94058 unmap_region(mm, vma, prev, vma->vm_start, vma->vm_end);
94059 charged = 0;
94060 free_vma:
94061+
94062+#ifdef CONFIG_PAX_SEGMEXEC
94063+ if (vma_m)
94064+ kmem_cache_free(vm_area_cachep, vma_m);
94065+#endif
94066+
94067 kmem_cache_free(vm_area_cachep, vma);
94068 unacct_error:
94069 if (charged)
94070@@ -1655,7 +1823,63 @@ unacct_error:
94071 return error;
94072 }
94073
94074-unsigned long unmapped_area(struct vm_unmapped_area_info *info)
94075+#ifdef CONFIG_GRKERNSEC_RAND_THREADSTACK
94076+unsigned long gr_rand_threadstack_offset(const struct mm_struct *mm, const struct file *filp, unsigned long flags)
94077+{
94078+ if ((mm->pax_flags & MF_PAX_RANDMMAP) && !filp && (flags & MAP_STACK))
94079+ return ((prandom_u32() & 0xFF) + 1) << PAGE_SHIFT;
94080+
94081+ return 0;
94082+}
94083+#endif
94084+
94085+bool check_heap_stack_gap(const struct vm_area_struct *vma, unsigned long addr, unsigned long len, unsigned long offset)
94086+{
94087+ if (!vma) {
94088+#ifdef CONFIG_STACK_GROWSUP
94089+ if (addr > sysctl_heap_stack_gap)
94090+ vma = find_vma(current->mm, addr - sysctl_heap_stack_gap);
94091+ else
94092+ vma = find_vma(current->mm, 0);
94093+ if (vma && (vma->vm_flags & VM_GROWSUP))
94094+ return false;
94095+#endif
94096+ return true;
94097+ }
94098+
94099+ if (addr + len > vma->vm_start)
94100+ return false;
94101+
94102+ if (vma->vm_flags & VM_GROWSDOWN)
94103+ return sysctl_heap_stack_gap <= vma->vm_start - addr - len;
94104+#ifdef CONFIG_STACK_GROWSUP
94105+ else if (vma->vm_prev && (vma->vm_prev->vm_flags & VM_GROWSUP))
94106+ return addr - vma->vm_prev->vm_end >= sysctl_heap_stack_gap;
94107+#endif
94108+ else if (offset)
94109+ return offset <= vma->vm_start - addr - len;
94110+
94111+ return true;
94112+}
94113+
94114+unsigned long skip_heap_stack_gap(const struct vm_area_struct *vma, unsigned long len, unsigned long offset)
94115+{
94116+ if (vma->vm_start < len)
94117+ return -ENOMEM;
94118+
94119+ if (!(vma->vm_flags & VM_GROWSDOWN)) {
94120+ if (offset <= vma->vm_start - len)
94121+ return vma->vm_start - len - offset;
94122+ else
94123+ return -ENOMEM;
94124+ }
94125+
94126+ if (sysctl_heap_stack_gap <= vma->vm_start - len)
94127+ return vma->vm_start - len - sysctl_heap_stack_gap;
94128+ return -ENOMEM;
94129+}
94130+
94131+unsigned long unmapped_area(const struct vm_unmapped_area_info *info)
94132 {
94133 /*
94134 * We implement the search by looking for an rbtree node that
94135@@ -1703,11 +1927,29 @@ unsigned long unmapped_area(struct vm_unmapped_area_info *info)
94136 }
94137 }
94138
94139- gap_start = vma->vm_prev ? vma->vm_prev->vm_end : 0;
94140+ gap_start = vma->vm_prev ? vma->vm_prev->vm_end: 0;
94141 check_current:
94142 /* Check if current node has a suitable gap */
94143 if (gap_start > high_limit)
94144 return -ENOMEM;
94145+
94146+ if (gap_end - gap_start > info->threadstack_offset)
94147+ gap_start += info->threadstack_offset;
94148+ else
94149+ gap_start = gap_end;
94150+
94151+ if (vma->vm_prev && (vma->vm_prev->vm_flags & VM_GROWSUP)) {
94152+ if (gap_end - gap_start > sysctl_heap_stack_gap)
94153+ gap_start += sysctl_heap_stack_gap;
94154+ else
94155+ gap_start = gap_end;
94156+ }
94157+ if (vma->vm_flags & VM_GROWSDOWN) {
94158+ if (gap_end - gap_start > sysctl_heap_stack_gap)
94159+ gap_end -= sysctl_heap_stack_gap;
94160+ else
94161+ gap_end = gap_start;
94162+ }
94163 if (gap_end >= low_limit && gap_end - gap_start >= length)
94164 goto found;
94165
94166@@ -1757,7 +1999,7 @@ found:
94167 return gap_start;
94168 }
94169
94170-unsigned long unmapped_area_topdown(struct vm_unmapped_area_info *info)
94171+unsigned long unmapped_area_topdown(const struct vm_unmapped_area_info *info)
94172 {
94173 struct mm_struct *mm = current->mm;
94174 struct vm_area_struct *vma;
94175@@ -1811,6 +2053,24 @@ check_current:
94176 gap_end = vma->vm_start;
94177 if (gap_end < low_limit)
94178 return -ENOMEM;
94179+
94180+ if (gap_end - gap_start > info->threadstack_offset)
94181+ gap_end -= info->threadstack_offset;
94182+ else
94183+ gap_end = gap_start;
94184+
94185+ if (vma->vm_prev && (vma->vm_prev->vm_flags & VM_GROWSUP)) {
94186+ if (gap_end - gap_start > sysctl_heap_stack_gap)
94187+ gap_start += sysctl_heap_stack_gap;
94188+ else
94189+ gap_start = gap_end;
94190+ }
94191+ if (vma->vm_flags & VM_GROWSDOWN) {
94192+ if (gap_end - gap_start > sysctl_heap_stack_gap)
94193+ gap_end -= sysctl_heap_stack_gap;
94194+ else
94195+ gap_end = gap_start;
94196+ }
94197 if (gap_start <= high_limit && gap_end - gap_start >= length)
94198 goto found;
94199
94200@@ -1874,6 +2134,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
94201 struct mm_struct *mm = current->mm;
94202 struct vm_area_struct *vma;
94203 struct vm_unmapped_area_info info;
94204+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
94205
94206 if (len > TASK_SIZE - mmap_min_addr)
94207 return -ENOMEM;
94208@@ -1881,11 +2142,15 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
94209 if (flags & MAP_FIXED)
94210 return addr;
94211
94212+#ifdef CONFIG_PAX_RANDMMAP
94213+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
94214+#endif
94215+
94216 if (addr) {
94217 addr = PAGE_ALIGN(addr);
94218 vma = find_vma(mm, addr);
94219 if (TASK_SIZE - len >= addr && addr >= mmap_min_addr &&
94220- (!vma || addr + len <= vma->vm_start))
94221+ check_heap_stack_gap(vma, addr, len, offset))
94222 return addr;
94223 }
94224
94225@@ -1894,6 +2159,7 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
94226 info.low_limit = mm->mmap_base;
94227 info.high_limit = TASK_SIZE;
94228 info.align_mask = 0;
94229+ info.threadstack_offset = offset;
94230 return vm_unmapped_area(&info);
94231 }
94232 #endif
94233@@ -1912,6 +2178,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
94234 struct mm_struct *mm = current->mm;
94235 unsigned long addr = addr0;
94236 struct vm_unmapped_area_info info;
94237+ unsigned long offset = gr_rand_threadstack_offset(mm, filp, flags);
94238
94239 /* requested length too big for entire address space */
94240 if (len > TASK_SIZE - mmap_min_addr)
94241@@ -1920,12 +2187,16 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
94242 if (flags & MAP_FIXED)
94243 return addr;
94244
94245+#ifdef CONFIG_PAX_RANDMMAP
94246+ if (!(mm->pax_flags & MF_PAX_RANDMMAP))
94247+#endif
94248+
94249 /* requesting a specific address */
94250 if (addr) {
94251 addr = PAGE_ALIGN(addr);
94252 vma = find_vma(mm, addr);
94253 if (TASK_SIZE - len >= addr && addr >= mmap_min_addr &&
94254- (!vma || addr + len <= vma->vm_start))
94255+ check_heap_stack_gap(vma, addr, len, offset))
94256 return addr;
94257 }
94258
94259@@ -1934,6 +2205,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
94260 info.low_limit = max(PAGE_SIZE, mmap_min_addr);
94261 info.high_limit = mm->mmap_base;
94262 info.align_mask = 0;
94263+ info.threadstack_offset = offset;
94264 addr = vm_unmapped_area(&info);
94265
94266 /*
94267@@ -1946,6 +2218,12 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
94268 VM_BUG_ON(addr != -ENOMEM);
94269 info.flags = 0;
94270 info.low_limit = TASK_UNMAPPED_BASE;
94271+
94272+#ifdef CONFIG_PAX_RANDMMAP
94273+ if (mm->pax_flags & MF_PAX_RANDMMAP)
94274+ info.low_limit += mm->delta_mmap;
94275+#endif
94276+
94277 info.high_limit = TASK_SIZE;
94278 addr = vm_unmapped_area(&info);
94279 }
94280@@ -2046,6 +2324,28 @@ find_vma_prev(struct mm_struct *mm, unsigned long addr,
94281 return vma;
94282 }
94283
94284+#ifdef CONFIG_PAX_SEGMEXEC
94285+struct vm_area_struct *pax_find_mirror_vma(struct vm_area_struct *vma)
94286+{
94287+ struct vm_area_struct *vma_m;
94288+
94289+ BUG_ON(!vma || vma->vm_start >= vma->vm_end);
94290+ if (!(vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC) || !(vma->vm_flags & VM_EXEC)) {
94291+ BUG_ON(vma->vm_mirror);
94292+ return NULL;
94293+ }
94294+ BUG_ON(vma->vm_start < SEGMEXEC_TASK_SIZE && SEGMEXEC_TASK_SIZE < vma->vm_end);
94295+ vma_m = vma->vm_mirror;
94296+ BUG_ON(!vma_m || vma_m->vm_mirror != vma);
94297+ BUG_ON(vma->vm_file != vma_m->vm_file);
94298+ BUG_ON(vma->vm_end - vma->vm_start != vma_m->vm_end - vma_m->vm_start);
94299+ BUG_ON(vma->vm_pgoff != vma_m->vm_pgoff);
94300+ BUG_ON(vma->anon_vma != vma_m->anon_vma && vma->anon_vma->root != vma_m->anon_vma->root);
94301+ BUG_ON((vma->vm_flags ^ vma_m->vm_flags) & ~(VM_WRITE | VM_MAYWRITE | VM_ACCOUNT | VM_LOCKED));
94302+ return vma_m;
94303+}
94304+#endif
94305+
94306 /*
94307 * Verify that the stack growth is acceptable and
94308 * update accounting. This is shared with both the
94309@@ -2062,6 +2362,7 @@ static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, uns
94310 return -ENOMEM;
94311
94312 /* Stack limit test */
94313+ gr_learn_resource(current, RLIMIT_STACK, size, 1);
94314 if (size > ACCESS_ONCE(rlim[RLIMIT_STACK].rlim_cur))
94315 return -ENOMEM;
94316
94317@@ -2072,6 +2373,7 @@ static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, uns
94318 locked = mm->locked_vm + grow;
94319 limit = ACCESS_ONCE(rlim[RLIMIT_MEMLOCK].rlim_cur);
94320 limit >>= PAGE_SHIFT;
94321+ gr_learn_resource(current, RLIMIT_MEMLOCK, locked << PAGE_SHIFT, 1);
94322 if (locked > limit && !capable(CAP_IPC_LOCK))
94323 return -ENOMEM;
94324 }
94325@@ -2101,37 +2403,48 @@ static int acct_stack_growth(struct vm_area_struct *vma, unsigned long size, uns
94326 * PA-RISC uses this for its stack; IA64 for its Register Backing Store.
94327 * vma is the last one with address > vma->vm_end. Have to extend vma.
94328 */
94329+#ifndef CONFIG_IA64
94330+static
94331+#endif
94332 int expand_upwards(struct vm_area_struct *vma, unsigned long address)
94333 {
94334 int error;
94335+ bool locknext;
94336
94337 if (!(vma->vm_flags & VM_GROWSUP))
94338 return -EFAULT;
94339
94340+ /* Also guard against wrapping around to address 0. */
94341+ if (address < PAGE_ALIGN(address+1))
94342+ address = PAGE_ALIGN(address+1);
94343+ else
94344+ return -ENOMEM;
94345+
94346 /*
94347 * We must make sure the anon_vma is allocated
94348 * so that the anon_vma locking is not a noop.
94349 */
94350 if (unlikely(anon_vma_prepare(vma)))
94351 return -ENOMEM;
94352+ locknext = vma->vm_next && (vma->vm_next->vm_flags & VM_GROWSDOWN);
94353+ if (locknext && anon_vma_prepare(vma->vm_next))
94354+ return -ENOMEM;
94355 vma_lock_anon_vma(vma);
94356+ if (locknext)
94357+ vma_lock_anon_vma(vma->vm_next);
94358
94359 /*
94360 * vma->vm_start/vm_end cannot change under us because the caller
94361 * is required to hold the mmap_sem in read mode. We need the
94362- * anon_vma lock to serialize against concurrent expand_stacks.
94363- * Also guard against wrapping around to address 0.
94364+ * anon_vma locks to serialize against concurrent expand_stacks
94365+ * and expand_upwards.
94366 */
94367- if (address < PAGE_ALIGN(address+4))
94368- address = PAGE_ALIGN(address+4);
94369- else {
94370- vma_unlock_anon_vma(vma);
94371- return -ENOMEM;
94372- }
94373 error = 0;
94374
94375 /* Somebody else might have raced and expanded it already */
94376- if (address > vma->vm_end) {
94377+ if (vma->vm_next && (vma->vm_next->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)) && vma->vm_next->vm_start - address < sysctl_heap_stack_gap)
94378+ error = -ENOMEM;
94379+ else if (address > vma->vm_end && (!locknext || vma->vm_next->vm_start >= address)) {
94380 unsigned long size, grow;
94381
94382 size = address - vma->vm_start;
94383@@ -2166,6 +2479,8 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
94384 }
94385 }
94386 }
94387+ if (locknext)
94388+ vma_unlock_anon_vma(vma->vm_next);
94389 vma_unlock_anon_vma(vma);
94390 khugepaged_enter_vma_merge(vma);
94391 validate_mm(vma->vm_mm);
94392@@ -2180,6 +2495,8 @@ int expand_downwards(struct vm_area_struct *vma,
94393 unsigned long address)
94394 {
94395 int error;
94396+ bool lockprev = false;
94397+ struct vm_area_struct *prev;
94398
94399 /*
94400 * We must make sure the anon_vma is allocated
94401@@ -2193,6 +2510,15 @@ int expand_downwards(struct vm_area_struct *vma,
94402 if (error)
94403 return error;
94404
94405+ prev = vma->vm_prev;
94406+#if defined(CONFIG_STACK_GROWSUP) || defined(CONFIG_IA64)
94407+ lockprev = prev && (prev->vm_flags & VM_GROWSUP);
94408+#endif
94409+ if (lockprev && anon_vma_prepare(prev))
94410+ return -ENOMEM;
94411+ if (lockprev)
94412+ vma_lock_anon_vma(prev);
94413+
94414 vma_lock_anon_vma(vma);
94415
94416 /*
94417@@ -2202,9 +2528,17 @@ int expand_downwards(struct vm_area_struct *vma,
94418 */
94419
94420 /* Somebody else might have raced and expanded it already */
94421- if (address < vma->vm_start) {
94422+ if (prev && (prev->vm_flags & (VM_READ | VM_WRITE | VM_EXEC)) && address - prev->vm_end < sysctl_heap_stack_gap)
94423+ error = -ENOMEM;
94424+ else if (address < vma->vm_start && (!lockprev || prev->vm_end <= address)) {
94425 unsigned long size, grow;
94426
94427+#ifdef CONFIG_PAX_SEGMEXEC
94428+ struct vm_area_struct *vma_m;
94429+
94430+ vma_m = pax_find_mirror_vma(vma);
94431+#endif
94432+
94433 size = vma->vm_end - address;
94434 grow = (vma->vm_start - address) >> PAGE_SHIFT;
94435
94436@@ -2229,13 +2563,27 @@ int expand_downwards(struct vm_area_struct *vma,
94437 vma->vm_pgoff -= grow;
94438 anon_vma_interval_tree_post_update_vma(vma);
94439 vma_gap_update(vma);
94440+
94441+#ifdef CONFIG_PAX_SEGMEXEC
94442+ if (vma_m) {
94443+ anon_vma_interval_tree_pre_update_vma(vma_m);
94444+ vma_m->vm_start -= grow << PAGE_SHIFT;
94445+ vma_m->vm_pgoff -= grow;
94446+ anon_vma_interval_tree_post_update_vma(vma_m);
94447+ vma_gap_update(vma_m);
94448+ }
94449+#endif
94450+
94451 spin_unlock(&vma->vm_mm->page_table_lock);
94452
94453+ track_exec_limit(vma->vm_mm, vma->vm_start, vma->vm_end, vma->vm_flags);
94454 perf_event_mmap(vma);
94455 }
94456 }
94457 }
94458 vma_unlock_anon_vma(vma);
94459+ if (lockprev)
94460+ vma_unlock_anon_vma(prev);
94461 khugepaged_enter_vma_merge(vma);
94462 validate_mm(vma->vm_mm);
94463 return error;
94464@@ -2333,6 +2681,13 @@ static void remove_vma_list(struct mm_struct *mm, struct vm_area_struct *vma)
94465 do {
94466 long nrpages = vma_pages(vma);
94467
94468+#ifdef CONFIG_PAX_SEGMEXEC
94469+ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_start >= SEGMEXEC_TASK_SIZE)) {
94470+ vma = remove_vma(vma);
94471+ continue;
94472+ }
94473+#endif
94474+
94475 if (vma->vm_flags & VM_ACCOUNT)
94476 nr_accounted += nrpages;
94477 vm_stat_account(mm, vma->vm_flags, vma->vm_file, -nrpages);
94478@@ -2377,6 +2732,16 @@ detach_vmas_to_be_unmapped(struct mm_struct *mm, struct vm_area_struct *vma,
94479 insertion_point = (prev ? &prev->vm_next : &mm->mmap);
94480 vma->vm_prev = NULL;
94481 do {
94482+
94483+#ifdef CONFIG_PAX_SEGMEXEC
94484+ if (vma->vm_mirror) {
94485+ BUG_ON(!vma->vm_mirror->vm_mirror || vma->vm_mirror->vm_mirror != vma);
94486+ vma->vm_mirror->vm_mirror = NULL;
94487+ vma->vm_mirror->vm_flags &= ~VM_EXEC;
94488+ vma->vm_mirror = NULL;
94489+ }
94490+#endif
94491+
94492 vma_rb_erase(vma, &mm->mm_rb);
94493 mm->map_count--;
94494 tail_vma = vma;
94495@@ -2404,14 +2769,33 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
94496 struct vm_area_struct *new;
94497 int err = -ENOMEM;
94498
94499+#ifdef CONFIG_PAX_SEGMEXEC
94500+ struct vm_area_struct *vma_m, *new_m = NULL;
94501+ unsigned long addr_m = addr + SEGMEXEC_TASK_SIZE;
94502+#endif
94503+
94504 if (is_vm_hugetlb_page(vma) && (addr &
94505 ~(huge_page_mask(hstate_vma(vma)))))
94506 return -EINVAL;
94507
94508+#ifdef CONFIG_PAX_SEGMEXEC
94509+ vma_m = pax_find_mirror_vma(vma);
94510+#endif
94511+
94512 new = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
94513 if (!new)
94514 goto out_err;
94515
94516+#ifdef CONFIG_PAX_SEGMEXEC
94517+ if (vma_m) {
94518+ new_m = kmem_cache_alloc(vm_area_cachep, GFP_KERNEL);
94519+ if (!new_m) {
94520+ kmem_cache_free(vm_area_cachep, new);
94521+ goto out_err;
94522+ }
94523+ }
94524+#endif
94525+
94526 /* most fields are the same, copy all, and then fixup */
94527 *new = *vma;
94528
94529@@ -2424,6 +2808,22 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
94530 new->vm_pgoff += ((addr - vma->vm_start) >> PAGE_SHIFT);
94531 }
94532
94533+#ifdef CONFIG_PAX_SEGMEXEC
94534+ if (vma_m) {
94535+ *new_m = *vma_m;
94536+ INIT_LIST_HEAD(&new_m->anon_vma_chain);
94537+ new_m->vm_mirror = new;
94538+ new->vm_mirror = new_m;
94539+
94540+ if (new_below)
94541+ new_m->vm_end = addr_m;
94542+ else {
94543+ new_m->vm_start = addr_m;
94544+ new_m->vm_pgoff += ((addr_m - vma_m->vm_start) >> PAGE_SHIFT);
94545+ }
94546+ }
94547+#endif
94548+
94549 err = vma_dup_policy(vma, new);
94550 if (err)
94551 goto out_free_vma;
94552@@ -2443,6 +2843,38 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
94553 else
94554 err = vma_adjust(vma, vma->vm_start, addr, vma->vm_pgoff, new);
94555
94556+#ifdef CONFIG_PAX_SEGMEXEC
94557+ if (!err && vma_m) {
94558+ struct mempolicy *pol = vma_policy(new);
94559+
94560+ if (anon_vma_clone(new_m, vma_m))
94561+ goto out_free_mpol;
94562+
94563+ mpol_get(pol);
94564+ set_vma_policy(new_m, pol);
94565+
94566+ if (new_m->vm_file)
94567+ get_file(new_m->vm_file);
94568+
94569+ if (new_m->vm_ops && new_m->vm_ops->open)
94570+ new_m->vm_ops->open(new_m);
94571+
94572+ if (new_below)
94573+ err = vma_adjust(vma_m, addr_m, vma_m->vm_end, vma_m->vm_pgoff +
94574+ ((addr_m - new_m->vm_start) >> PAGE_SHIFT), new_m);
94575+ else
94576+ err = vma_adjust(vma_m, vma_m->vm_start, addr_m, vma_m->vm_pgoff, new_m);
94577+
94578+ if (err) {
94579+ if (new_m->vm_ops && new_m->vm_ops->close)
94580+ new_m->vm_ops->close(new_m);
94581+ if (new_m->vm_file)
94582+ fput(new_m->vm_file);
94583+ mpol_put(pol);
94584+ }
94585+ }
94586+#endif
94587+
94588 /* Success. */
94589 if (!err)
94590 return 0;
94591@@ -2452,10 +2884,18 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
94592 new->vm_ops->close(new);
94593 if (new->vm_file)
94594 fput(new->vm_file);
94595- unlink_anon_vmas(new);
94596 out_free_mpol:
94597 mpol_put(vma_policy(new));
94598 out_free_vma:
94599+
94600+#ifdef CONFIG_PAX_SEGMEXEC
94601+ if (new_m) {
94602+ unlink_anon_vmas(new_m);
94603+ kmem_cache_free(vm_area_cachep, new_m);
94604+ }
94605+#endif
94606+
94607+ unlink_anon_vmas(new);
94608 kmem_cache_free(vm_area_cachep, new);
94609 out_err:
94610 return err;
94611@@ -2468,6 +2908,15 @@ static int __split_vma(struct mm_struct * mm, struct vm_area_struct * vma,
94612 int split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
94613 unsigned long addr, int new_below)
94614 {
94615+
94616+#ifdef CONFIG_PAX_SEGMEXEC
94617+ if (mm->pax_flags & MF_PAX_SEGMEXEC) {
94618+ BUG_ON(vma->vm_end > SEGMEXEC_TASK_SIZE);
94619+ if (mm->map_count >= sysctl_max_map_count-1)
94620+ return -ENOMEM;
94621+ } else
94622+#endif
94623+
94624 if (mm->map_count >= sysctl_max_map_count)
94625 return -ENOMEM;
94626
94627@@ -2479,11 +2928,30 @@ int split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
94628 * work. This now handles partial unmappings.
94629 * Jeremy Fitzhardinge <jeremy@goop.org>
94630 */
94631+#ifdef CONFIG_PAX_SEGMEXEC
94632 int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
94633 {
94634+ int ret = __do_munmap(mm, start, len);
94635+ if (ret || !(mm->pax_flags & MF_PAX_SEGMEXEC))
94636+ return ret;
94637+
94638+ return __do_munmap(mm, start + SEGMEXEC_TASK_SIZE, len);
94639+}
94640+
94641+int __do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
94642+#else
94643+int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
94644+#endif
94645+{
94646 unsigned long end;
94647 struct vm_area_struct *vma, *prev, *last;
94648
94649+ /*
94650+ * mm->mmap_sem is required to protect against another thread
94651+ * changing the mappings in case we sleep.
94652+ */
94653+ verify_mm_writelocked(mm);
94654+
94655 if ((start & ~PAGE_MASK) || start > TASK_SIZE || len > TASK_SIZE-start)
94656 return -EINVAL;
94657
94658@@ -2558,6 +3026,8 @@ int do_munmap(struct mm_struct *mm, unsigned long start, size_t len)
94659 /* Fix up all other VM information */
94660 remove_vma_list(mm, vma);
94661
94662+ track_exec_limit(mm, start, end, 0UL);
94663+
94664 return 0;
94665 }
94666
94667@@ -2566,6 +3036,13 @@ int vm_munmap(unsigned long start, size_t len)
94668 int ret;
94669 struct mm_struct *mm = current->mm;
94670
94671+
94672+#ifdef CONFIG_PAX_SEGMEXEC
94673+ if ((mm->pax_flags & MF_PAX_SEGMEXEC) &&
94674+ (len > SEGMEXEC_TASK_SIZE || start > SEGMEXEC_TASK_SIZE-len))
94675+ return -EINVAL;
94676+#endif
94677+
94678 down_write(&mm->mmap_sem);
94679 ret = do_munmap(mm, start, len);
94680 up_write(&mm->mmap_sem);
94681@@ -2579,16 +3056,6 @@ SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len)
94682 return vm_munmap(addr, len);
94683 }
94684
94685-static inline void verify_mm_writelocked(struct mm_struct *mm)
94686-{
94687-#ifdef CONFIG_DEBUG_VM
94688- if (unlikely(down_read_trylock(&mm->mmap_sem))) {
94689- WARN_ON(1);
94690- up_read(&mm->mmap_sem);
94691- }
94692-#endif
94693-}
94694-
94695 /*
94696 * this is really a simplified "do_mmap". it only handles
94697 * anonymous maps. eventually we may be able to do some
94698@@ -2602,6 +3069,7 @@ static unsigned long do_brk(unsigned long addr, unsigned long len)
94699 struct rb_node ** rb_link, * rb_parent;
94700 pgoff_t pgoff = addr >> PAGE_SHIFT;
94701 int error;
94702+ unsigned long charged;
94703
94704 len = PAGE_ALIGN(len);
94705 if (!len)
94706@@ -2609,10 +3077,24 @@ static unsigned long do_brk(unsigned long addr, unsigned long len)
94707
94708 flags = VM_DATA_DEFAULT_FLAGS | VM_ACCOUNT | mm->def_flags;
94709
94710+#if defined(CONFIG_PAX_PAGEEXEC) || defined(CONFIG_PAX_SEGMEXEC)
94711+ if (mm->pax_flags & (MF_PAX_PAGEEXEC | MF_PAX_SEGMEXEC)) {
94712+ flags &= ~VM_EXEC;
94713+
94714+#ifdef CONFIG_PAX_MPROTECT
94715+ if (mm->pax_flags & MF_PAX_MPROTECT)
94716+ flags &= ~VM_MAYEXEC;
94717+#endif
94718+
94719+ }
94720+#endif
94721+
94722 error = get_unmapped_area(NULL, addr, len, 0, MAP_FIXED);
94723 if (error & ~PAGE_MASK)
94724 return error;
94725
94726+ charged = len >> PAGE_SHIFT;
94727+
94728 error = mlock_future_check(mm, mm->def_flags, len);
94729 if (error)
94730 return error;
94731@@ -2626,21 +3108,20 @@ static unsigned long do_brk(unsigned long addr, unsigned long len)
94732 /*
94733 * Clear old maps. this also does some error checking for us
94734 */
94735- munmap_back:
94736 if (find_vma_links(mm, addr, addr + len, &prev, &rb_link, &rb_parent)) {
94737 if (do_munmap(mm, addr, len))
94738 return -ENOMEM;
94739- goto munmap_back;
94740+ BUG_ON(find_vma_links(mm, addr, addr + len, &prev, &rb_link, &rb_parent));
94741 }
94742
94743 /* Check against address space limits *after* clearing old maps... */
94744- if (!may_expand_vm(mm, len >> PAGE_SHIFT))
94745+ if (!may_expand_vm(mm, charged))
94746 return -ENOMEM;
94747
94748 if (mm->map_count > sysctl_max_map_count)
94749 return -ENOMEM;
94750
94751- if (security_vm_enough_memory_mm(mm, len >> PAGE_SHIFT))
94752+ if (security_vm_enough_memory_mm(mm, charged))
94753 return -ENOMEM;
94754
94755 /* Can we just expand an old private anonymous mapping? */
94756@@ -2654,7 +3135,7 @@ static unsigned long do_brk(unsigned long addr, unsigned long len)
94757 */
94758 vma = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
94759 if (!vma) {
94760- vm_unacct_memory(len >> PAGE_SHIFT);
94761+ vm_unacct_memory(charged);
94762 return -ENOMEM;
94763 }
94764
94765@@ -2668,10 +3149,11 @@ static unsigned long do_brk(unsigned long addr, unsigned long len)
94766 vma_link(mm, vma, prev, rb_link, rb_parent);
94767 out:
94768 perf_event_mmap(vma);
94769- mm->total_vm += len >> PAGE_SHIFT;
94770+ mm->total_vm += charged;
94771 if (flags & VM_LOCKED)
94772- mm->locked_vm += (len >> PAGE_SHIFT);
94773+ mm->locked_vm += charged;
94774 vma->vm_flags |= VM_SOFTDIRTY;
94775+ track_exec_limit(mm, addr, addr + len, flags);
94776 return addr;
94777 }
94778
94779@@ -2733,6 +3215,7 @@ void exit_mmap(struct mm_struct *mm)
94780 while (vma) {
94781 if (vma->vm_flags & VM_ACCOUNT)
94782 nr_accounted += vma_pages(vma);
94783+ vma->vm_mirror = NULL;
94784 vma = remove_vma(vma);
94785 }
94786 vm_unacct_memory(nr_accounted);
94787@@ -2750,6 +3233,13 @@ int insert_vm_struct(struct mm_struct *mm, struct vm_area_struct *vma)
94788 struct vm_area_struct *prev;
94789 struct rb_node **rb_link, *rb_parent;
94790
94791+#ifdef CONFIG_PAX_SEGMEXEC
94792+ struct vm_area_struct *vma_m = NULL;
94793+#endif
94794+
94795+ if (security_mmap_addr(vma->vm_start))
94796+ return -EPERM;
94797+
94798 /*
94799 * The vm_pgoff of a purely anonymous vma should be irrelevant
94800 * until its first write fault, when page's anon_vma and index
94801@@ -2773,7 +3263,21 @@ int insert_vm_struct(struct mm_struct *mm, struct vm_area_struct *vma)
94802 security_vm_enough_memory_mm(mm, vma_pages(vma)))
94803 return -ENOMEM;
94804
94805+#ifdef CONFIG_PAX_SEGMEXEC
94806+ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (vma->vm_flags & VM_EXEC)) {
94807+ vma_m = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
94808+ if (!vma_m)
94809+ return -ENOMEM;
94810+ }
94811+#endif
94812+
94813 vma_link(mm, vma, prev, rb_link, rb_parent);
94814+
94815+#ifdef CONFIG_PAX_SEGMEXEC
94816+ if (vma_m)
94817+ BUG_ON(pax_mirror_vma(vma_m, vma));
94818+#endif
94819+
94820 return 0;
94821 }
94822
94823@@ -2792,6 +3296,8 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
94824 struct rb_node **rb_link, *rb_parent;
94825 bool faulted_in_anon_vma = true;
94826
94827+ BUG_ON(vma->vm_mirror);
94828+
94829 /*
94830 * If anonymous vma has not yet been faulted, update new pgoff
94831 * to match new location, to increase its chance of merging.
94832@@ -2856,6 +3362,39 @@ struct vm_area_struct *copy_vma(struct vm_area_struct **vmap,
94833 return NULL;
94834 }
94835
94836+#ifdef CONFIG_PAX_SEGMEXEC
94837+long pax_mirror_vma(struct vm_area_struct *vma_m, struct vm_area_struct *vma)
94838+{
94839+ struct vm_area_struct *prev_m;
94840+ struct rb_node **rb_link_m, *rb_parent_m;
94841+ struct mempolicy *pol_m;
94842+
94843+ BUG_ON(!(vma->vm_mm->pax_flags & MF_PAX_SEGMEXEC) || !(vma->vm_flags & VM_EXEC));
94844+ BUG_ON(vma->vm_mirror || vma_m->vm_mirror);
94845+ BUG_ON(!mpol_equal(vma_policy(vma), vma_policy(vma_m)));
94846+ *vma_m = *vma;
94847+ INIT_LIST_HEAD(&vma_m->anon_vma_chain);
94848+ if (anon_vma_clone(vma_m, vma))
94849+ return -ENOMEM;
94850+ pol_m = vma_policy(vma_m);
94851+ mpol_get(pol_m);
94852+ set_vma_policy(vma_m, pol_m);
94853+ vma_m->vm_start += SEGMEXEC_TASK_SIZE;
94854+ vma_m->vm_end += SEGMEXEC_TASK_SIZE;
94855+ vma_m->vm_flags &= ~(VM_WRITE | VM_MAYWRITE | VM_ACCOUNT | VM_LOCKED);
94856+ vma_m->vm_page_prot = vm_get_page_prot(vma_m->vm_flags);
94857+ if (vma_m->vm_file)
94858+ get_file(vma_m->vm_file);
94859+ if (vma_m->vm_ops && vma_m->vm_ops->open)
94860+ vma_m->vm_ops->open(vma_m);
94861+ BUG_ON(find_vma_links(vma->vm_mm, vma_m->vm_start, vma_m->vm_end, &prev_m, &rb_link_m, &rb_parent_m));
94862+ vma_link(vma->vm_mm, vma_m, prev_m, rb_link_m, rb_parent_m);
94863+ vma_m->vm_mirror = vma;
94864+ vma->vm_mirror = vma_m;
94865+ return 0;
94866+}
94867+#endif
94868+
94869 /*
94870 * Return true if the calling process may expand its vm space by the passed
94871 * number of pages
94872@@ -2867,6 +3406,7 @@ int may_expand_vm(struct mm_struct *mm, unsigned long npages)
94873
94874 lim = rlimit(RLIMIT_AS) >> PAGE_SHIFT;
94875
94876+ gr_learn_resource(current, RLIMIT_AS, (cur + npages) << PAGE_SHIFT, 1);
94877 if (cur + npages > lim)
94878 return 0;
94879 return 1;
94880@@ -2937,6 +3477,22 @@ struct vm_area_struct *_install_special_mapping(struct mm_struct *mm,
94881 vma->vm_start = addr;
94882 vma->vm_end = addr + len;
94883
94884+#ifdef CONFIG_PAX_MPROTECT
94885+ if (mm->pax_flags & MF_PAX_MPROTECT) {
94886+#ifndef CONFIG_PAX_MPROTECT_COMPAT
94887+ if ((vm_flags & (VM_WRITE | VM_EXEC)) == (VM_WRITE | VM_EXEC))
94888+ return ERR_PTR(-EPERM);
94889+ if (!(vm_flags & VM_EXEC))
94890+ vm_flags &= ~VM_MAYEXEC;
94891+#else
94892+ if ((vm_flags & (VM_WRITE | VM_EXEC)) != VM_EXEC)
94893+ vm_flags &= ~(VM_EXEC | VM_MAYEXEC);
94894+#endif
94895+ else
94896+ vm_flags &= ~VM_MAYWRITE;
94897+ }
94898+#endif
94899+
94900 vma->vm_flags = vm_flags | mm->def_flags | VM_DONTEXPAND | VM_SOFTDIRTY;
94901 vma->vm_page_prot = vm_get_page_prot(vma->vm_flags);
94902
94903diff --git a/mm/mprotect.c b/mm/mprotect.c
94904index c43d557..0b7ccd2 100644
94905--- a/mm/mprotect.c
94906+++ b/mm/mprotect.c
94907@@ -24,10 +24,18 @@
94908 #include <linux/migrate.h>
94909 #include <linux/perf_event.h>
94910 #include <linux/ksm.h>
94911+#include <linux/sched/sysctl.h>
94912+
94913+#ifdef CONFIG_PAX_MPROTECT
94914+#include <linux/elf.h>
94915+#include <linux/binfmts.h>
94916+#endif
94917+
94918 #include <asm/uaccess.h>
94919 #include <asm/pgtable.h>
94920 #include <asm/cacheflush.h>
94921 #include <asm/tlbflush.h>
94922+#include <asm/mmu_context.h>
94923
94924 #ifndef pgprot_modify
94925 static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot)
94926@@ -256,6 +264,48 @@ unsigned long change_protection(struct vm_area_struct *vma, unsigned long start,
94927 return pages;
94928 }
94929
94930+#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT
94931+/* called while holding the mmap semaphor for writing except stack expansion */
94932+void track_exec_limit(struct mm_struct *mm, unsigned long start, unsigned long end, unsigned long prot)
94933+{
94934+ unsigned long oldlimit, newlimit = 0UL;
94935+
94936+ if (!(mm->pax_flags & MF_PAX_PAGEEXEC) || (__supported_pte_mask & _PAGE_NX))
94937+ return;
94938+
94939+ spin_lock(&mm->page_table_lock);
94940+ oldlimit = mm->context.user_cs_limit;
94941+ if ((prot & VM_EXEC) && oldlimit < end)
94942+ /* USER_CS limit moved up */
94943+ newlimit = end;
94944+ else if (!(prot & VM_EXEC) && start < oldlimit && oldlimit <= end)
94945+ /* USER_CS limit moved down */
94946+ newlimit = start;
94947+
94948+ if (newlimit) {
94949+ mm->context.user_cs_limit = newlimit;
94950+
94951+#ifdef CONFIG_SMP
94952+ wmb();
94953+ cpus_clear(mm->context.cpu_user_cs_mask);
94954+ cpu_set(smp_processor_id(), mm->context.cpu_user_cs_mask);
94955+#endif
94956+
94957+ set_user_cs(mm->context.user_cs_base, mm->context.user_cs_limit, smp_processor_id());
94958+ }
94959+ spin_unlock(&mm->page_table_lock);
94960+ if (newlimit == end) {
94961+ struct vm_area_struct *vma = find_vma(mm, oldlimit);
94962+
94963+ for (; vma && vma->vm_start < end; vma = vma->vm_next)
94964+ if (is_vm_hugetlb_page(vma))
94965+ hugetlb_change_protection(vma, vma->vm_start, vma->vm_end, vma->vm_page_prot);
94966+ else
94967+ change_protection(vma, vma->vm_start, vma->vm_end, vma->vm_page_prot, vma_wants_writenotify(vma), 0);
94968+ }
94969+}
94970+#endif
94971+
94972 int
94973 mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev,
94974 unsigned long start, unsigned long end, unsigned long newflags)
94975@@ -268,11 +318,29 @@ mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev,
94976 int error;
94977 int dirty_accountable = 0;
94978
94979+#ifdef CONFIG_PAX_SEGMEXEC
94980+ struct vm_area_struct *vma_m = NULL;
94981+ unsigned long start_m, end_m;
94982+
94983+ start_m = start + SEGMEXEC_TASK_SIZE;
94984+ end_m = end + SEGMEXEC_TASK_SIZE;
94985+#endif
94986+
94987 if (newflags == oldflags) {
94988 *pprev = vma;
94989 return 0;
94990 }
94991
94992+ if (newflags & (VM_READ | VM_WRITE | VM_EXEC)) {
94993+ struct vm_area_struct *prev = vma->vm_prev, *next = vma->vm_next;
94994+
94995+ if (next && (next->vm_flags & VM_GROWSDOWN) && sysctl_heap_stack_gap > next->vm_start - end)
94996+ return -ENOMEM;
94997+
94998+ if (prev && (prev->vm_flags & VM_GROWSUP) && sysctl_heap_stack_gap > start - prev->vm_end)
94999+ return -ENOMEM;
95000+ }
95001+
95002 /*
95003 * If we make a private mapping writable we increase our commit;
95004 * but (without finer accounting) cannot reduce our commit if we
95005@@ -289,6 +357,42 @@ mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev,
95006 }
95007 }
95008
95009+#ifdef CONFIG_PAX_SEGMEXEC
95010+ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && ((oldflags ^ newflags) & VM_EXEC)) {
95011+ if (start != vma->vm_start) {
95012+ error = split_vma(mm, vma, start, 1);
95013+ if (error)
95014+ goto fail;
95015+ BUG_ON(!*pprev || (*pprev)->vm_next == vma);
95016+ *pprev = (*pprev)->vm_next;
95017+ }
95018+
95019+ if (end != vma->vm_end) {
95020+ error = split_vma(mm, vma, end, 0);
95021+ if (error)
95022+ goto fail;
95023+ }
95024+
95025+ if (pax_find_mirror_vma(vma)) {
95026+ error = __do_munmap(mm, start_m, end_m - start_m);
95027+ if (error)
95028+ goto fail;
95029+ } else {
95030+ vma_m = kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL);
95031+ if (!vma_m) {
95032+ error = -ENOMEM;
95033+ goto fail;
95034+ }
95035+ vma->vm_flags = newflags;
95036+ error = pax_mirror_vma(vma_m, vma);
95037+ if (error) {
95038+ vma->vm_flags = oldflags;
95039+ goto fail;
95040+ }
95041+ }
95042+ }
95043+#endif
95044+
95045 /*
95046 * First try to merge with previous and/or next vma.
95047 */
95048@@ -319,9 +423,21 @@ success:
95049 * vm_flags and vm_page_prot are protected by the mmap_sem
95050 * held in write mode.
95051 */
95052+
95053+#ifdef CONFIG_PAX_SEGMEXEC
95054+ if ((mm->pax_flags & MF_PAX_SEGMEXEC) && (newflags & VM_EXEC) && ((vma->vm_flags ^ newflags) & VM_READ))
95055+ pax_find_mirror_vma(vma)->vm_flags ^= VM_READ;
95056+#endif
95057+
95058 vma->vm_flags = newflags;
95059+
95060+#ifdef CONFIG_PAX_MPROTECT
95061+ if (mm->binfmt && mm->binfmt->handle_mprotect)
95062+ mm->binfmt->handle_mprotect(vma, newflags);
95063+#endif
95064+
95065 vma->vm_page_prot = pgprot_modify(vma->vm_page_prot,
95066- vm_get_page_prot(newflags));
95067+ vm_get_page_prot(vma->vm_flags));
95068
95069 if (vma_wants_writenotify(vma)) {
95070 vma->vm_page_prot = vm_get_page_prot(newflags & ~VM_SHARED);
95071@@ -360,6 +476,17 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len,
95072 end = start + len;
95073 if (end <= start)
95074 return -ENOMEM;
95075+
95076+#ifdef CONFIG_PAX_SEGMEXEC
95077+ if (current->mm->pax_flags & MF_PAX_SEGMEXEC) {
95078+ if (end > SEGMEXEC_TASK_SIZE)
95079+ return -EINVAL;
95080+ } else
95081+#endif
95082+
95083+ if (end > TASK_SIZE)
95084+ return -EINVAL;
95085+
95086 if (!arch_validate_prot(prot))
95087 return -EINVAL;
95088
95089@@ -367,7 +494,7 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len,
95090 /*
95091 * Does the application expect PROT_READ to imply PROT_EXEC:
95092 */
95093- if ((prot & PROT_READ) && (current->personality & READ_IMPLIES_EXEC))
95094+ if ((prot & (PROT_READ | PROT_WRITE)) && (current->personality & READ_IMPLIES_EXEC))
95095 prot |= PROT_EXEC;
95096
95097 vm_flags = calc_vm_prot_bits(prot);
95098@@ -399,6 +526,11 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len,
95099 if (start > vma->vm_start)
95100 prev = vma;
95101
95102+#ifdef CONFIG_PAX_MPROTECT
95103+ if (current->mm->binfmt && current->mm->binfmt->handle_mprotect)
95104+ current->mm->binfmt->handle_mprotect(vma, vm_flags);
95105+#endif
95106+
95107 for (nstart = start ; ; ) {
95108 unsigned long newflags;
95109
95110@@ -409,6 +541,14 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len,
95111
95112 /* newflags >> 4 shift VM_MAY% in place of VM_% */
95113 if ((newflags & ~(newflags >> 4)) & (VM_READ | VM_WRITE | VM_EXEC)) {
95114+ if (prot & (PROT_WRITE | PROT_EXEC))
95115+ gr_log_rwxmprotect(vma);
95116+
95117+ error = -EACCES;
95118+ goto out;
95119+ }
95120+
95121+ if (!gr_acl_handle_mprotect(vma->vm_file, prot)) {
95122 error = -EACCES;
95123 goto out;
95124 }
95125@@ -423,6 +563,9 @@ SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len,
95126 error = mprotect_fixup(vma, &prev, nstart, tmp, newflags);
95127 if (error)
95128 goto out;
95129+
95130+ track_exec_limit(current->mm, nstart, tmp, vm_flags);
95131+
95132 nstart = tmp;
95133
95134 if (nstart < prev->vm_end)
95135diff --git a/mm/mremap.c b/mm/mremap.c
95136index 05f1180..c3cde48 100644
95137--- a/mm/mremap.c
95138+++ b/mm/mremap.c
95139@@ -144,6 +144,12 @@ static void move_ptes(struct vm_area_struct *vma, pmd_t *old_pmd,
95140 continue;
95141 pte = ptep_get_and_clear(mm, old_addr, old_pte);
95142 pte = move_pte(pte, new_vma->vm_page_prot, old_addr, new_addr);
95143+
95144+#ifdef CONFIG_ARCH_TRACK_EXEC_LIMIT
95145+ if (!(__supported_pte_mask & _PAGE_NX) && pte_present(pte) && (new_vma->vm_flags & (VM_PAGEEXEC | VM_EXEC)) == VM_PAGEEXEC)
95146+ pte = pte_exprotect(pte);
95147+#endif
95148+
95149 pte = move_soft_dirty_pte(pte);
95150 set_pte_at(mm, new_addr, new_pte, pte);
95151 }
95152@@ -344,6 +350,11 @@ static struct vm_area_struct *vma_to_resize(unsigned long addr,
95153 if (is_vm_hugetlb_page(vma))
95154 goto Einval;
95155
95156+#ifdef CONFIG_PAX_SEGMEXEC
95157+ if (pax_find_mirror_vma(vma))
95158+ goto Einval;
95159+#endif
95160+
95161 /* We can't remap across vm area boundaries */
95162 if (old_len > vma->vm_end - addr)
95163 goto Efault;
95164@@ -399,20 +410,25 @@ static unsigned long mremap_to(unsigned long addr, unsigned long old_len,
95165 unsigned long ret = -EINVAL;
95166 unsigned long charged = 0;
95167 unsigned long map_flags;
95168+ unsigned long pax_task_size = TASK_SIZE;
95169
95170 if (new_addr & ~PAGE_MASK)
95171 goto out;
95172
95173- if (new_len > TASK_SIZE || new_addr > TASK_SIZE - new_len)
95174+#ifdef CONFIG_PAX_SEGMEXEC
95175+ if (mm->pax_flags & MF_PAX_SEGMEXEC)
95176+ pax_task_size = SEGMEXEC_TASK_SIZE;
95177+#endif
95178+
95179+ pax_task_size -= PAGE_SIZE;
95180+
95181+ if (new_len > TASK_SIZE || new_addr > pax_task_size - new_len)
95182 goto out;
95183
95184 /* Check if the location we're moving into overlaps the
95185 * old location at all, and fail if it does.
95186 */
95187- if ((new_addr <= addr) && (new_addr+new_len) > addr)
95188- goto out;
95189-
95190- if ((addr <= new_addr) && (addr+old_len) > new_addr)
95191+ if (addr + old_len > new_addr && new_addr + new_len > addr)
95192 goto out;
95193
95194 ret = do_munmap(mm, new_addr, new_len);
95195@@ -481,6 +497,7 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
95196 unsigned long ret = -EINVAL;
95197 unsigned long charged = 0;
95198 bool locked = false;
95199+ unsigned long pax_task_size = TASK_SIZE;
95200
95201 if (flags & ~(MREMAP_FIXED | MREMAP_MAYMOVE))
95202 return ret;
95203@@ -502,6 +519,17 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
95204 if (!new_len)
95205 return ret;
95206
95207+#ifdef CONFIG_PAX_SEGMEXEC
95208+ if (mm->pax_flags & MF_PAX_SEGMEXEC)
95209+ pax_task_size = SEGMEXEC_TASK_SIZE;
95210+#endif
95211+
95212+ pax_task_size -= PAGE_SIZE;
95213+
95214+ if (new_len > pax_task_size || addr > pax_task_size-new_len ||
95215+ old_len > pax_task_size || addr > pax_task_size-old_len)
95216+ return ret;
95217+
95218 down_write(&current->mm->mmap_sem);
95219
95220 if (flags & MREMAP_FIXED) {
95221@@ -552,6 +580,7 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
95222 new_addr = addr;
95223 }
95224 ret = addr;
95225+ track_exec_limit(vma->vm_mm, vma->vm_start, addr + new_len, vma->vm_flags);
95226 goto out;
95227 }
95228 }
95229@@ -575,7 +604,12 @@ SYSCALL_DEFINE5(mremap, unsigned long, addr, unsigned long, old_len,
95230 goto out;
95231 }
95232
95233+ map_flags = vma->vm_flags;
95234 ret = move_vma(vma, addr, old_len, new_len, new_addr, &locked);
95235+ if (!(ret & ~PAGE_MASK)) {
95236+ track_exec_limit(current->mm, addr, addr + old_len, 0UL);
95237+ track_exec_limit(current->mm, new_addr, new_addr + new_len, map_flags);
95238+ }
95239 }
95240 out:
95241 if (ret & ~PAGE_MASK)
95242diff --git a/mm/nommu.c b/mm/nommu.c
95243index 85f8d66..b3375fa 100644
95244--- a/mm/nommu.c
95245+++ b/mm/nommu.c
95246@@ -67,7 +67,6 @@ int sysctl_max_map_count = DEFAULT_MAX_MAP_COUNT;
95247 int sysctl_nr_trim_pages = CONFIG_NOMMU_INITIAL_TRIM_EXCESS;
95248 unsigned long sysctl_user_reserve_kbytes __read_mostly = 1UL << 17; /* 128MB */
95249 unsigned long sysctl_admin_reserve_kbytes __read_mostly = 1UL << 13; /* 8MB */
95250-int heap_stack_gap = 0;
95251
95252 atomic_long_t mmap_pages_allocated;
95253
95254@@ -854,15 +853,6 @@ struct vm_area_struct *find_vma(struct mm_struct *mm, unsigned long addr)
95255 EXPORT_SYMBOL(find_vma);
95256
95257 /*
95258- * find a VMA
95259- * - we don't extend stack VMAs under NOMMU conditions
95260- */
95261-struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned long addr)
95262-{
95263- return find_vma(mm, addr);
95264-}
95265-
95266-/*
95267 * expand a stack to a given address
95268 * - not supported under NOMMU conditions
95269 */
95270@@ -1569,6 +1559,7 @@ int split_vma(struct mm_struct *mm, struct vm_area_struct *vma,
95271
95272 /* most fields are the same, copy all, and then fixup */
95273 *new = *vma;
95274+ INIT_LIST_HEAD(&new->anon_vma_chain);
95275 *region = *vma->vm_region;
95276 new->vm_region = region;
95277
95278@@ -2004,8 +1995,8 @@ int generic_file_remap_pages(struct vm_area_struct *vma, unsigned long addr,
95279 }
95280 EXPORT_SYMBOL(generic_file_remap_pages);
95281
95282-static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
95283- unsigned long addr, void *buf, int len, int write)
95284+static ssize_t __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
95285+ unsigned long addr, void *buf, size_t len, int write)
95286 {
95287 struct vm_area_struct *vma;
95288
95289@@ -2046,8 +2037,8 @@ static int __access_remote_vm(struct task_struct *tsk, struct mm_struct *mm,
95290 *
95291 * The caller must hold a reference on @mm.
95292 */
95293-int access_remote_vm(struct mm_struct *mm, unsigned long addr,
95294- void *buf, int len, int write)
95295+ssize_t access_remote_vm(struct mm_struct *mm, unsigned long addr,
95296+ void *buf, size_t len, int write)
95297 {
95298 return __access_remote_vm(NULL, mm, addr, buf, len, write);
95299 }
95300@@ -2056,7 +2047,7 @@ int access_remote_vm(struct mm_struct *mm, unsigned long addr,
95301 * Access another process' address space.
95302 * - source/target buffer must be kernel space
95303 */
95304-int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write)
95305+ssize_t access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, size_t len, int write)
95306 {
95307 struct mm_struct *mm;
95308
95309diff --git a/mm/page-writeback.c b/mm/page-writeback.c
95310index 154af21..86e447f 100644
95311--- a/mm/page-writeback.c
95312+++ b/mm/page-writeback.c
95313@@ -685,7 +685,7 @@ static long long pos_ratio_polynom(unsigned long setpoint,
95314 * card's bdi_dirty may rush to many times higher than bdi_setpoint.
95315 * - the bdi dirty thresh drops quickly due to change of JBOD workload
95316 */
95317-static unsigned long bdi_position_ratio(struct backing_dev_info *bdi,
95318+static unsigned long __intentional_overflow(-1) bdi_position_ratio(struct backing_dev_info *bdi,
95319 unsigned long thresh,
95320 unsigned long bg_thresh,
95321 unsigned long dirty,
95322diff --git a/mm/page_alloc.c b/mm/page_alloc.c
95323index 56eb0eb..bb5e928 100644
95324--- a/mm/page_alloc.c
95325+++ b/mm/page_alloc.c
95326@@ -61,6 +61,7 @@
95327 #include <linux/page-debug-flags.h>
95328 #include <linux/hugetlb.h>
95329 #include <linux/sched/rt.h>
95330+#include <linux/random.h>
95331
95332 #include <asm/sections.h>
95333 #include <asm/tlbflush.h>
95334@@ -355,7 +356,7 @@ out:
95335 * This usage means that zero-order pages may not be compound.
95336 */
95337
95338-static void free_compound_page(struct page *page)
95339+void free_compound_page(struct page *page)
95340 {
95341 __free_pages_ok(page, compound_order(page));
95342 }
95343@@ -729,6 +730,10 @@ static bool free_pages_prepare(struct page *page, unsigned int order)
95344 int i;
95345 int bad = 0;
95346
95347+#ifdef CONFIG_PAX_MEMORY_SANITIZE
95348+ unsigned long index = 1UL << order;
95349+#endif
95350+
95351 trace_mm_page_free(page, order);
95352 kmemcheck_free_shadow(page, order);
95353
95354@@ -745,6 +750,12 @@ static bool free_pages_prepare(struct page *page, unsigned int order)
95355 debug_check_no_obj_freed(page_address(page),
95356 PAGE_SIZE << order);
95357 }
95358+
95359+#ifdef CONFIG_PAX_MEMORY_SANITIZE
95360+ for (; index; --index)
95361+ sanitize_highpage(page + index - 1);
95362+#endif
95363+
95364 arch_free_page(page, order);
95365 kernel_map_pages(page, 1 << order, 0);
95366
95367@@ -767,6 +778,20 @@ static void __free_pages_ok(struct page *page, unsigned int order)
95368 local_irq_restore(flags);
95369 }
95370
95371+#ifdef CONFIG_PAX_LATENT_ENTROPY
95372+bool __meminitdata extra_latent_entropy;
95373+
95374+static int __init setup_pax_extra_latent_entropy(char *str)
95375+{
95376+ extra_latent_entropy = true;
95377+ return 0;
95378+}
95379+early_param("pax_extra_latent_entropy", setup_pax_extra_latent_entropy);
95380+
95381+volatile u64 latent_entropy __latent_entropy;
95382+EXPORT_SYMBOL(latent_entropy);
95383+#endif
95384+
95385 void __init __free_pages_bootmem(struct page *page, unsigned int order)
95386 {
95387 unsigned int nr_pages = 1 << order;
95388@@ -782,6 +807,19 @@ void __init __free_pages_bootmem(struct page *page, unsigned int order)
95389 __ClearPageReserved(p);
95390 set_page_count(p, 0);
95391
95392+#ifdef CONFIG_PAX_LATENT_ENTROPY
95393+ if (extra_latent_entropy && !PageHighMem(page) && page_to_pfn(page) < 0x100000) {
95394+ u64 hash = 0;
95395+ size_t index, end = PAGE_SIZE * nr_pages / sizeof hash;
95396+ const u64 *data = lowmem_page_address(page);
95397+
95398+ for (index = 0; index < end; index++)
95399+ hash ^= hash + data[index];
95400+ latent_entropy ^= hash;
95401+ add_device_randomness((const void *)&latent_entropy, sizeof(latent_entropy));
95402+ }
95403+#endif
95404+
95405 page_zone(page)->managed_pages += nr_pages;
95406 set_page_refcounted(page);
95407 __free_pages(page, order);
95408@@ -898,8 +936,10 @@ static int prep_new_page(struct page *page, int order, gfp_t gfp_flags)
95409 arch_alloc_page(page, order);
95410 kernel_map_pages(page, 1 << order, 1);
95411
95412+#ifndef CONFIG_PAX_MEMORY_SANITIZE
95413 if (gfp_flags & __GFP_ZERO)
95414 prep_zero_page(page, order, gfp_flags);
95415+#endif
95416
95417 if (order && (gfp_flags & __GFP_COMP))
95418 prep_compound_page(page, order);
95419@@ -2402,7 +2442,7 @@ static void reset_alloc_batches(struct zonelist *zonelist,
95420 continue;
95421 mod_zone_page_state(zone, NR_ALLOC_BATCH,
95422 high_wmark_pages(zone) - low_wmark_pages(zone) -
95423- atomic_long_read(&zone->vm_stat[NR_ALLOC_BATCH]));
95424+ atomic_long_read_unchecked(&zone->vm_stat[NR_ALLOC_BATCH]));
95425 }
95426 }
95427
95428diff --git a/mm/page_io.c b/mm/page_io.c
95429index 7c59ef6..1358905 100644
95430--- a/mm/page_io.c
95431+++ b/mm/page_io.c
95432@@ -260,7 +260,7 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc,
95433 struct file *swap_file = sis->swap_file;
95434 struct address_space *mapping = swap_file->f_mapping;
95435 struct iovec iov = {
95436- .iov_base = kmap(page),
95437+ .iov_base = (void __force_user *)kmap(page),
95438 .iov_len = PAGE_SIZE,
95439 };
95440
95441diff --git a/mm/percpu.c b/mm/percpu.c
95442index 2ddf9a9..f8fc075 100644
95443--- a/mm/percpu.c
95444+++ b/mm/percpu.c
95445@@ -123,7 +123,7 @@ static unsigned int pcpu_low_unit_cpu __read_mostly;
95446 static unsigned int pcpu_high_unit_cpu __read_mostly;
95447
95448 /* the address of the first chunk which starts with the kernel static area */
95449-void *pcpu_base_addr __read_mostly;
95450+void *pcpu_base_addr __read_only;
95451 EXPORT_SYMBOL_GPL(pcpu_base_addr);
95452
95453 static const int *pcpu_unit_map __read_mostly; /* cpu -> unit */
95454diff --git a/mm/process_vm_access.c b/mm/process_vm_access.c
95455index 8505c92..946bfc9 100644
95456--- a/mm/process_vm_access.c
95457+++ b/mm/process_vm_access.c
95458@@ -13,6 +13,7 @@
95459 #include <linux/uio.h>
95460 #include <linux/sched.h>
95461 #include <linux/highmem.h>
95462+#include <linux/security.h>
95463 #include <linux/ptrace.h>
95464 #include <linux/slab.h>
95465 #include <linux/syscalls.h>
95466@@ -161,19 +162,19 @@ static ssize_t process_vm_rw_core(pid_t pid, struct iov_iter *iter,
95467 ssize_t iov_len;
95468 size_t total_len = iov_iter_count(iter);
95469
95470+ return -ENOSYS; // PaX: until properly audited
95471+
95472 /*
95473 * Work out how many pages of struct pages we're going to need
95474 * when eventually calling get_user_pages
95475 */
95476 for (i = 0; i < riovcnt; i++) {
95477 iov_len = rvec[i].iov_len;
95478- if (iov_len > 0) {
95479- nr_pages_iov = ((unsigned long)rvec[i].iov_base
95480- + iov_len)
95481- / PAGE_SIZE - (unsigned long)rvec[i].iov_base
95482- / PAGE_SIZE + 1;
95483- nr_pages = max(nr_pages, nr_pages_iov);
95484- }
95485+ if (iov_len <= 0)
95486+ continue;
95487+ nr_pages_iov = ((unsigned long)rvec[i].iov_base + iov_len) / PAGE_SIZE -
95488+ (unsigned long)rvec[i].iov_base / PAGE_SIZE + 1;
95489+ nr_pages = max(nr_pages, nr_pages_iov);
95490 }
95491
95492 if (nr_pages == 0)
95493@@ -201,6 +202,11 @@ static ssize_t process_vm_rw_core(pid_t pid, struct iov_iter *iter,
95494 goto free_proc_pages;
95495 }
95496
95497+ if (gr_handle_ptrace(task, vm_write ? PTRACE_POKETEXT : PTRACE_ATTACH)) {
95498+ rc = -EPERM;
95499+ goto put_task_struct;
95500+ }
95501+
95502 mm = mm_access(task, PTRACE_MODE_ATTACH);
95503 if (!mm || IS_ERR(mm)) {
95504 rc = IS_ERR(mm) ? PTR_ERR(mm) : -ESRCH;
95505diff --git a/mm/rmap.c b/mm/rmap.c
95506index 14d1e28..3777962 100644
95507--- a/mm/rmap.c
95508+++ b/mm/rmap.c
95509@@ -164,6 +164,10 @@ int anon_vma_prepare(struct vm_area_struct *vma)
95510 struct anon_vma *anon_vma = vma->anon_vma;
95511 struct anon_vma_chain *avc;
95512
95513+#ifdef CONFIG_PAX_SEGMEXEC
95514+ struct anon_vma_chain *avc_m = NULL;
95515+#endif
95516+
95517 might_sleep();
95518 if (unlikely(!anon_vma)) {
95519 struct mm_struct *mm = vma->vm_mm;
95520@@ -173,6 +177,12 @@ int anon_vma_prepare(struct vm_area_struct *vma)
95521 if (!avc)
95522 goto out_enomem;
95523
95524+#ifdef CONFIG_PAX_SEGMEXEC
95525+ avc_m = anon_vma_chain_alloc(GFP_KERNEL);
95526+ if (!avc_m)
95527+ goto out_enomem_free_avc;
95528+#endif
95529+
95530 anon_vma = find_mergeable_anon_vma(vma);
95531 allocated = NULL;
95532 if (!anon_vma) {
95533@@ -186,6 +196,18 @@ int anon_vma_prepare(struct vm_area_struct *vma)
95534 /* page_table_lock to protect against threads */
95535 spin_lock(&mm->page_table_lock);
95536 if (likely(!vma->anon_vma)) {
95537+
95538+#ifdef CONFIG_PAX_SEGMEXEC
95539+ struct vm_area_struct *vma_m = pax_find_mirror_vma(vma);
95540+
95541+ if (vma_m) {
95542+ BUG_ON(vma_m->anon_vma);
95543+ vma_m->anon_vma = anon_vma;
95544+ anon_vma_chain_link(vma_m, avc_m, anon_vma);
95545+ avc_m = NULL;
95546+ }
95547+#endif
95548+
95549 vma->anon_vma = anon_vma;
95550 anon_vma_chain_link(vma, avc, anon_vma);
95551 allocated = NULL;
95552@@ -196,12 +218,24 @@ int anon_vma_prepare(struct vm_area_struct *vma)
95553
95554 if (unlikely(allocated))
95555 put_anon_vma(allocated);
95556+
95557+#ifdef CONFIG_PAX_SEGMEXEC
95558+ if (unlikely(avc_m))
95559+ anon_vma_chain_free(avc_m);
95560+#endif
95561+
95562 if (unlikely(avc))
95563 anon_vma_chain_free(avc);
95564 }
95565 return 0;
95566
95567 out_enomem_free_avc:
95568+
95569+#ifdef CONFIG_PAX_SEGMEXEC
95570+ if (avc_m)
95571+ anon_vma_chain_free(avc_m);
95572+#endif
95573+
95574 anon_vma_chain_free(avc);
95575 out_enomem:
95576 return -ENOMEM;
95577@@ -237,7 +271,7 @@ static inline void unlock_anon_vma_root(struct anon_vma *root)
95578 * Attach the anon_vmas from src to dst.
95579 * Returns 0 on success, -ENOMEM on failure.
95580 */
95581-int anon_vma_clone(struct vm_area_struct *dst, struct vm_area_struct *src)
95582+int anon_vma_clone(struct vm_area_struct *dst, const struct vm_area_struct *src)
95583 {
95584 struct anon_vma_chain *avc, *pavc;
95585 struct anon_vma *root = NULL;
95586@@ -270,7 +304,7 @@ int anon_vma_clone(struct vm_area_struct *dst, struct vm_area_struct *src)
95587 * the corresponding VMA in the parent process is attached to.
95588 * Returns 0 on success, non-zero on failure.
95589 */
95590-int anon_vma_fork(struct vm_area_struct *vma, struct vm_area_struct *pvma)
95591+int anon_vma_fork(struct vm_area_struct *vma, const struct vm_area_struct *pvma)
95592 {
95593 struct anon_vma_chain *avc;
95594 struct anon_vma *anon_vma;
95595@@ -374,8 +408,10 @@ static void anon_vma_ctor(void *data)
95596 void __init anon_vma_init(void)
95597 {
95598 anon_vma_cachep = kmem_cache_create("anon_vma", sizeof(struct anon_vma),
95599- 0, SLAB_DESTROY_BY_RCU|SLAB_PANIC, anon_vma_ctor);
95600- anon_vma_chain_cachep = KMEM_CACHE(anon_vma_chain, SLAB_PANIC);
95601+ 0, SLAB_DESTROY_BY_RCU|SLAB_PANIC|SLAB_NO_SANITIZE,
95602+ anon_vma_ctor);
95603+ anon_vma_chain_cachep = KMEM_CACHE(anon_vma_chain,
95604+ SLAB_PANIC|SLAB_NO_SANITIZE);
95605 }
95606
95607 /*
95608diff --git a/mm/shmem.c b/mm/shmem.c
95609index a2801ba..b8651e6 100644
95610--- a/mm/shmem.c
95611+++ b/mm/shmem.c
95612@@ -33,7 +33,7 @@
95613 #include <linux/swap.h>
95614 #include <linux/aio.h>
95615
95616-static struct vfsmount *shm_mnt;
95617+struct vfsmount *shm_mnt;
95618
95619 #ifdef CONFIG_SHMEM
95620 /*
95621@@ -77,14 +77,15 @@ static struct vfsmount *shm_mnt;
95622 #define BOGO_DIRENT_SIZE 20
95623
95624 /* Symlink up to this size is kmalloc'ed instead of using a swappable page */
95625-#define SHORT_SYMLINK_LEN 128
95626+#define SHORT_SYMLINK_LEN 64
95627
95628 /*
95629- * shmem_fallocate and shmem_writepage communicate via inode->i_private
95630- * (with i_mutex making sure that it has only one user at a time):
95631- * we would prefer not to enlarge the shmem inode just for that.
95632+ * shmem_fallocate communicates with shmem_fault or shmem_writepage via
95633+ * inode->i_private (with i_mutex making sure that it has only one user at
95634+ * a time): we would prefer not to enlarge the shmem inode just for that.
95635 */
95636 struct shmem_falloc {
95637+ int mode; /* FALLOC_FL mode currently operating */
95638 pgoff_t start; /* start of range currently being fallocated */
95639 pgoff_t next; /* the next page offset to be fallocated */
95640 pgoff_t nr_falloced; /* how many new pages have been fallocated */
95641@@ -759,6 +760,7 @@ static int shmem_writepage(struct page *page, struct writeback_control *wbc)
95642 spin_lock(&inode->i_lock);
95643 shmem_falloc = inode->i_private;
95644 if (shmem_falloc &&
95645+ !shmem_falloc->mode &&
95646 index >= shmem_falloc->start &&
95647 index < shmem_falloc->next)
95648 shmem_falloc->nr_unswapped++;
95649@@ -1233,6 +1235,43 @@ static int shmem_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
95650 int error;
95651 int ret = VM_FAULT_LOCKED;
95652
95653+ /*
95654+ * Trinity finds that probing a hole which tmpfs is punching can
95655+ * prevent the hole-punch from ever completing: which in turn
95656+ * locks writers out with its hold on i_mutex. So refrain from
95657+ * faulting pages into the hole while it's being punched, and
95658+ * wait on i_mutex to be released if vmf->flags permits,
95659+ */
95660+ if (unlikely(inode->i_private)) {
95661+ struct shmem_falloc *shmem_falloc;
95662+ spin_lock(&inode->i_lock);
95663+ shmem_falloc = inode->i_private;
95664+ if (!shmem_falloc ||
95665+ shmem_falloc->mode != FALLOC_FL_PUNCH_HOLE ||
95666+ vmf->pgoff < shmem_falloc->start ||
95667+ vmf->pgoff >= shmem_falloc->next)
95668+ shmem_falloc = NULL;
95669+ spin_unlock(&inode->i_lock);
95670+ /*
95671+ * i_lock has protected us from taking shmem_falloc seriously
95672+ * once return from shmem_fallocate() went back up that stack.
95673+ * i_lock does not serialize with i_mutex at all, but it does
95674+ * not matter if sometimes we wait unnecessarily, or sometimes
95675+ * miss out on waiting: we just need to make those cases rare.
95676+ */
95677+ if (shmem_falloc) {
95678+ if ((vmf->flags & FAULT_FLAG_ALLOW_RETRY) &&
95679+ !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) {
95680+ up_read(&vma->vm_mm->mmap_sem);
95681+ mutex_lock(&inode->i_mutex);
95682+ mutex_unlock(&inode->i_mutex);
95683+ return VM_FAULT_RETRY;
95684+ }
95685+ /* cond_resched? Leave that to GUP or return to user */
95686+ return VM_FAULT_NOPAGE;
95687+ }
95688+ }
95689+
95690 error = shmem_getpage(inode, vmf->pgoff, &vmf->page, SGP_CACHE, &ret);
95691 if (error)
95692 return ((error == -ENOMEM) ? VM_FAULT_OOM : VM_FAULT_SIGBUS);
95693@@ -1733,18 +1772,26 @@ static long shmem_fallocate(struct file *file, int mode, loff_t offset,
95694
95695 mutex_lock(&inode->i_mutex);
95696
95697+ shmem_falloc.mode = mode & ~FALLOC_FL_KEEP_SIZE;
95698+
95699 if (mode & FALLOC_FL_PUNCH_HOLE) {
95700 struct address_space *mapping = file->f_mapping;
95701 loff_t unmap_start = round_up(offset, PAGE_SIZE);
95702 loff_t unmap_end = round_down(offset + len, PAGE_SIZE) - 1;
95703
95704+ shmem_falloc.start = unmap_start >> PAGE_SHIFT;
95705+ shmem_falloc.next = (unmap_end + 1) >> PAGE_SHIFT;
95706+ spin_lock(&inode->i_lock);
95707+ inode->i_private = &shmem_falloc;
95708+ spin_unlock(&inode->i_lock);
95709+
95710 if ((u64)unmap_end > (u64)unmap_start)
95711 unmap_mapping_range(mapping, unmap_start,
95712 1 + unmap_end - unmap_start, 0);
95713 shmem_truncate_range(inode, offset, offset + len - 1);
95714 /* No need to unmap again: hole-punching leaves COWed pages */
95715 error = 0;
95716- goto out;
95717+ goto undone;
95718 }
95719
95720 /* We need to check rlimit even when FALLOC_FL_KEEP_SIZE */
95721@@ -2138,6 +2185,11 @@ static const struct xattr_handler *shmem_xattr_handlers[] = {
95722 static int shmem_xattr_validate(const char *name)
95723 {
95724 struct { const char *prefix; size_t len; } arr[] = {
95725+
95726+#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
95727+ { XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN},
95728+#endif
95729+
95730 { XATTR_SECURITY_PREFIX, XATTR_SECURITY_PREFIX_LEN },
95731 { XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN }
95732 };
95733@@ -2193,6 +2245,15 @@ static int shmem_setxattr(struct dentry *dentry, const char *name,
95734 if (err)
95735 return err;
95736
95737+#ifdef CONFIG_PAX_XATTR_PAX_FLAGS
95738+ if (!strncmp(name, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN)) {
95739+ if (strcmp(name, XATTR_NAME_PAX_FLAGS))
95740+ return -EOPNOTSUPP;
95741+ if (size > 8)
95742+ return -EINVAL;
95743+ }
95744+#endif
95745+
95746 return simple_xattr_set(&info->xattrs, name, value, size, flags);
95747 }
95748
95749@@ -2505,8 +2566,7 @@ int shmem_fill_super(struct super_block *sb, void *data, int silent)
95750 int err = -ENOMEM;
95751
95752 /* Round up to L1_CACHE_BYTES to resist false sharing */
95753- sbinfo = kzalloc(max((int)sizeof(struct shmem_sb_info),
95754- L1_CACHE_BYTES), GFP_KERNEL);
95755+ sbinfo = kzalloc(max(sizeof(struct shmem_sb_info), L1_CACHE_BYTES), GFP_KERNEL);
95756 if (!sbinfo)
95757 return -ENOMEM;
95758
95759diff --git a/mm/slab.c b/mm/slab.c
95760index 9432556..e0dc685 100644
95761--- a/mm/slab.c
95762+++ b/mm/slab.c
95763@@ -311,10 +311,12 @@ static void kmem_cache_node_init(struct kmem_cache_node *parent)
95764 if ((x)->max_freeable < i) \
95765 (x)->max_freeable = i; \
95766 } while (0)
95767-#define STATS_INC_ALLOCHIT(x) atomic_inc(&(x)->allochit)
95768-#define STATS_INC_ALLOCMISS(x) atomic_inc(&(x)->allocmiss)
95769-#define STATS_INC_FREEHIT(x) atomic_inc(&(x)->freehit)
95770-#define STATS_INC_FREEMISS(x) atomic_inc(&(x)->freemiss)
95771+#define STATS_INC_ALLOCHIT(x) atomic_inc_unchecked(&(x)->allochit)
95772+#define STATS_INC_ALLOCMISS(x) atomic_inc_unchecked(&(x)->allocmiss)
95773+#define STATS_INC_FREEHIT(x) atomic_inc_unchecked(&(x)->freehit)
95774+#define STATS_INC_FREEMISS(x) atomic_inc_unchecked(&(x)->freemiss)
95775+#define STATS_INC_SANITIZED(x) atomic_inc_unchecked(&(x)->sanitized)
95776+#define STATS_INC_NOT_SANITIZED(x) atomic_inc_unchecked(&(x)->not_sanitized)
95777 #else
95778 #define STATS_INC_ACTIVE(x) do { } while (0)
95779 #define STATS_DEC_ACTIVE(x) do { } while (0)
95780@@ -331,6 +333,8 @@ static void kmem_cache_node_init(struct kmem_cache_node *parent)
95781 #define STATS_INC_ALLOCMISS(x) do { } while (0)
95782 #define STATS_INC_FREEHIT(x) do { } while (0)
95783 #define STATS_INC_FREEMISS(x) do { } while (0)
95784+#define STATS_INC_SANITIZED(x) do { } while (0)
95785+#define STATS_INC_NOT_SANITIZED(x) do { } while (0)
95786 #endif
95787
95788 #if DEBUG
95789@@ -447,7 +451,7 @@ static inline void *index_to_obj(struct kmem_cache *cache, struct page *page,
95790 * reciprocal_divide(offset, cache->reciprocal_buffer_size)
95791 */
95792 static inline unsigned int obj_to_index(const struct kmem_cache *cache,
95793- const struct page *page, void *obj)
95794+ const struct page *page, const void *obj)
95795 {
95796 u32 offset = (obj - page->s_mem);
95797 return reciprocal_divide(offset, cache->reciprocal_buffer_size);
95798@@ -1558,12 +1562,12 @@ void __init kmem_cache_init(void)
95799 */
95800
95801 kmalloc_caches[INDEX_AC] = create_kmalloc_cache("kmalloc-ac",
95802- kmalloc_size(INDEX_AC), ARCH_KMALLOC_FLAGS);
95803+ kmalloc_size(INDEX_AC), SLAB_USERCOPY | ARCH_KMALLOC_FLAGS);
95804
95805 if (INDEX_AC != INDEX_NODE)
95806 kmalloc_caches[INDEX_NODE] =
95807 create_kmalloc_cache("kmalloc-node",
95808- kmalloc_size(INDEX_NODE), ARCH_KMALLOC_FLAGS);
95809+ kmalloc_size(INDEX_NODE), SLAB_USERCOPY | ARCH_KMALLOC_FLAGS);
95810
95811 slab_early_init = 0;
95812
95813@@ -3525,6 +3529,21 @@ static inline void __cache_free(struct kmem_cache *cachep, void *objp,
95814 struct array_cache *ac = cpu_cache_get(cachep);
95815
95816 check_irq_off();
95817+
95818+#ifdef CONFIG_PAX_MEMORY_SANITIZE
95819+ if (pax_sanitize_slab) {
95820+ if (!(cachep->flags & (SLAB_POISON | SLAB_NO_SANITIZE))) {
95821+ memset(objp, PAX_MEMORY_SANITIZE_VALUE, cachep->object_size);
95822+
95823+ if (cachep->ctor)
95824+ cachep->ctor(objp);
95825+
95826+ STATS_INC_SANITIZED(cachep);
95827+ } else
95828+ STATS_INC_NOT_SANITIZED(cachep);
95829+ }
95830+#endif
95831+
95832 kmemleak_free_recursive(objp, cachep->flags);
95833 objp = cache_free_debugcheck(cachep, objp, caller);
95834
95835@@ -3748,6 +3767,7 @@ void kfree(const void *objp)
95836
95837 if (unlikely(ZERO_OR_NULL_PTR(objp)))
95838 return;
95839+ VM_BUG_ON(!virt_addr_valid(objp));
95840 local_irq_save(flags);
95841 kfree_debugcheck(objp);
95842 c = virt_to_cache(objp);
95843@@ -4189,14 +4209,22 @@ void slabinfo_show_stats(struct seq_file *m, struct kmem_cache *cachep)
95844 }
95845 /* cpu stats */
95846 {
95847- unsigned long allochit = atomic_read(&cachep->allochit);
95848- unsigned long allocmiss = atomic_read(&cachep->allocmiss);
95849- unsigned long freehit = atomic_read(&cachep->freehit);
95850- unsigned long freemiss = atomic_read(&cachep->freemiss);
95851+ unsigned long allochit = atomic_read_unchecked(&cachep->allochit);
95852+ unsigned long allocmiss = atomic_read_unchecked(&cachep->allocmiss);
95853+ unsigned long freehit = atomic_read_unchecked(&cachep->freehit);
95854+ unsigned long freemiss = atomic_read_unchecked(&cachep->freemiss);
95855
95856 seq_printf(m, " : cpustat %6lu %6lu %6lu %6lu",
95857 allochit, allocmiss, freehit, freemiss);
95858 }
95859+#ifdef CONFIG_PAX_MEMORY_SANITIZE
95860+ {
95861+ unsigned long sanitized = atomic_read_unchecked(&cachep->sanitized);
95862+ unsigned long not_sanitized = atomic_read_unchecked(&cachep->not_sanitized);
95863+
95864+ seq_printf(m, " : pax %6lu %6lu", sanitized, not_sanitized);
95865+ }
95866+#endif
95867 #endif
95868 }
95869
95870@@ -4417,13 +4445,69 @@ static const struct file_operations proc_slabstats_operations = {
95871 static int __init slab_proc_init(void)
95872 {
95873 #ifdef CONFIG_DEBUG_SLAB_LEAK
95874- proc_create("slab_allocators", 0, NULL, &proc_slabstats_operations);
95875+ proc_create("slab_allocators", S_IRUSR, NULL, &proc_slabstats_operations);
95876 #endif
95877 return 0;
95878 }
95879 module_init(slab_proc_init);
95880 #endif
95881
95882+bool is_usercopy_object(const void *ptr)
95883+{
95884+ struct page *page;
95885+ struct kmem_cache *cachep;
95886+
95887+ if (ZERO_OR_NULL_PTR(ptr))
95888+ return false;
95889+
95890+ if (!slab_is_available())
95891+ return false;
95892+
95893+ if (!virt_addr_valid(ptr))
95894+ return false;
95895+
95896+ page = virt_to_head_page(ptr);
95897+
95898+ if (!PageSlab(page))
95899+ return false;
95900+
95901+ cachep = page->slab_cache;
95902+ return cachep->flags & SLAB_USERCOPY;
95903+}
95904+
95905+#ifdef CONFIG_PAX_USERCOPY
95906+const char *check_heap_object(const void *ptr, unsigned long n)
95907+{
95908+ struct page *page;
95909+ struct kmem_cache *cachep;
95910+ unsigned int objnr;
95911+ unsigned long offset;
95912+
95913+ if (ZERO_OR_NULL_PTR(ptr))
95914+ return "<null>";
95915+
95916+ if (!virt_addr_valid(ptr))
95917+ return NULL;
95918+
95919+ page = virt_to_head_page(ptr);
95920+
95921+ if (!PageSlab(page))
95922+ return NULL;
95923+
95924+ cachep = page->slab_cache;
95925+ if (!(cachep->flags & SLAB_USERCOPY))
95926+ return cachep->name;
95927+
95928+ objnr = obj_to_index(cachep, page, ptr);
95929+ BUG_ON(objnr >= cachep->num);
95930+ offset = ptr - index_to_obj(cachep, page, objnr) - obj_offset(cachep);
95931+ if (offset <= cachep->object_size && n <= cachep->object_size - offset)
95932+ return NULL;
95933+
95934+ return cachep->name;
95935+}
95936+#endif
95937+
95938 /**
95939 * ksize - get the actual amount of memory allocated for a given object
95940 * @objp: Pointer to the object
95941diff --git a/mm/slab.h b/mm/slab.h
95942index 6bd4c35..97565a1 100644
95943--- a/mm/slab.h
95944+++ b/mm/slab.h
95945@@ -32,6 +32,15 @@ extern struct list_head slab_caches;
95946 /* The slab cache that manages slab cache information */
95947 extern struct kmem_cache *kmem_cache;
95948
95949+#ifdef CONFIG_PAX_MEMORY_SANITIZE
95950+#ifdef CONFIG_X86_64
95951+#define PAX_MEMORY_SANITIZE_VALUE '\xfe'
95952+#else
95953+#define PAX_MEMORY_SANITIZE_VALUE '\xff'
95954+#endif
95955+extern bool pax_sanitize_slab;
95956+#endif
95957+
95958 unsigned long calculate_alignment(unsigned long flags,
95959 unsigned long align, unsigned long size);
95960
95961@@ -67,7 +76,8 @@ __kmem_cache_alias(const char *name, size_t size, size_t align,
95962
95963 /* Legal flag mask for kmem_cache_create(), for various configurations */
95964 #define SLAB_CORE_FLAGS (SLAB_HWCACHE_ALIGN | SLAB_CACHE_DMA | SLAB_PANIC | \
95965- SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS )
95966+ SLAB_DESTROY_BY_RCU | SLAB_DEBUG_OBJECTS | \
95967+ SLAB_USERCOPY | SLAB_NO_SANITIZE)
95968
95969 #if defined(CONFIG_DEBUG_SLAB)
95970 #define SLAB_DEBUG_FLAGS (SLAB_RED_ZONE | SLAB_POISON | SLAB_STORE_USER)
95971@@ -245,6 +255,9 @@ static inline struct kmem_cache *cache_from_obj(struct kmem_cache *s, void *x)
95972 return s;
95973
95974 page = virt_to_head_page(x);
95975+
95976+ BUG_ON(!PageSlab(page));
95977+
95978 cachep = page->slab_cache;
95979 if (slab_equal_or_root(cachep, s))
95980 return cachep;
95981diff --git a/mm/slab_common.c b/mm/slab_common.c
95982index 102cc6f..c7aab3d 100644
95983--- a/mm/slab_common.c
95984+++ b/mm/slab_common.c
95985@@ -23,11 +23,22 @@
95986
95987 #include "slab.h"
95988
95989-enum slab_state slab_state;
95990+enum slab_state slab_state __read_only;
95991 LIST_HEAD(slab_caches);
95992 DEFINE_MUTEX(slab_mutex);
95993 struct kmem_cache *kmem_cache;
95994
95995+#ifdef CONFIG_PAX_MEMORY_SANITIZE
95996+bool pax_sanitize_slab __read_only = true;
95997+static int __init pax_sanitize_slab_setup(char *str)
95998+{
95999+ pax_sanitize_slab = !!simple_strtol(str, NULL, 0);
96000+ printk("%sabled PaX slab sanitization\n", pax_sanitize_slab ? "En" : "Dis");
96001+ return 1;
96002+}
96003+__setup("pax_sanitize_slab=", pax_sanitize_slab_setup);
96004+#endif
96005+
96006 #ifdef CONFIG_DEBUG_VM
96007 static int kmem_cache_sanity_check(const char *name, size_t size)
96008 {
96009@@ -158,7 +169,7 @@ do_kmem_cache_create(char *name, size_t object_size, size_t size, size_t align,
96010 if (err)
96011 goto out_free_cache;
96012
96013- s->refcount = 1;
96014+ atomic_set(&s->refcount, 1);
96015 list_add(&s->list, &slab_caches);
96016 memcg_register_cache(s);
96017 out:
96018@@ -334,8 +345,7 @@ void kmem_cache_destroy(struct kmem_cache *s)
96019 get_online_cpus();
96020 mutex_lock(&slab_mutex);
96021
96022- s->refcount--;
96023- if (s->refcount)
96024+ if (!atomic_dec_and_test(&s->refcount))
96025 goto out_unlock;
96026
96027 if (kmem_cache_destroy_memcg_children(s) != 0)
96028@@ -358,7 +368,7 @@ void kmem_cache_destroy(struct kmem_cache *s)
96029 rcu_barrier();
96030
96031 memcg_free_cache_params(s);
96032-#ifdef SLAB_SUPPORTS_SYSFS
96033+#if defined(SLAB_SUPPORTS_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
96034 sysfs_slab_remove(s);
96035 #else
96036 slab_kmem_cache_release(s);
96037@@ -393,7 +403,7 @@ void __init create_boot_cache(struct kmem_cache *s, const char *name, size_t siz
96038 panic("Creation of kmalloc slab %s size=%zu failed. Reason %d\n",
96039 name, size, err);
96040
96041- s->refcount = -1; /* Exempt from merging for now */
96042+ atomic_set(&s->refcount, -1); /* Exempt from merging for now */
96043 }
96044
96045 struct kmem_cache *__init create_kmalloc_cache(const char *name, size_t size,
96046@@ -406,7 +416,7 @@ struct kmem_cache *__init create_kmalloc_cache(const char *name, size_t size,
96047
96048 create_boot_cache(s, name, size, flags);
96049 list_add(&s->list, &slab_caches);
96050- s->refcount = 1;
96051+ atomic_set(&s->refcount, 1);
96052 return s;
96053 }
96054
96055@@ -418,6 +428,11 @@ struct kmem_cache *kmalloc_dma_caches[KMALLOC_SHIFT_HIGH + 1];
96056 EXPORT_SYMBOL(kmalloc_dma_caches);
96057 #endif
96058
96059+#ifdef CONFIG_PAX_USERCOPY_SLABS
96060+struct kmem_cache *kmalloc_usercopy_caches[KMALLOC_SHIFT_HIGH + 1];
96061+EXPORT_SYMBOL(kmalloc_usercopy_caches);
96062+#endif
96063+
96064 /*
96065 * Conversion table for small slabs sizes / 8 to the index in the
96066 * kmalloc array. This is necessary for slabs < 192 since we have non power
96067@@ -482,6 +497,13 @@ struct kmem_cache *kmalloc_slab(size_t size, gfp_t flags)
96068 return kmalloc_dma_caches[index];
96069
96070 #endif
96071+
96072+#ifdef CONFIG_PAX_USERCOPY_SLABS
96073+ if (unlikely((flags & GFP_USERCOPY)))
96074+ return kmalloc_usercopy_caches[index];
96075+
96076+#endif
96077+
96078 return kmalloc_caches[index];
96079 }
96080
96081@@ -538,7 +560,7 @@ void __init create_kmalloc_caches(unsigned long flags)
96082 for (i = KMALLOC_SHIFT_LOW; i <= KMALLOC_SHIFT_HIGH; i++) {
96083 if (!kmalloc_caches[i]) {
96084 kmalloc_caches[i] = create_kmalloc_cache(NULL,
96085- 1 << i, flags);
96086+ 1 << i, SLAB_USERCOPY | flags);
96087 }
96088
96089 /*
96090@@ -547,10 +569,10 @@ void __init create_kmalloc_caches(unsigned long flags)
96091 * earlier power of two caches
96092 */
96093 if (KMALLOC_MIN_SIZE <= 32 && !kmalloc_caches[1] && i == 6)
96094- kmalloc_caches[1] = create_kmalloc_cache(NULL, 96, flags);
96095+ kmalloc_caches[1] = create_kmalloc_cache(NULL, 96, SLAB_USERCOPY | flags);
96096
96097 if (KMALLOC_MIN_SIZE <= 64 && !kmalloc_caches[2] && i == 7)
96098- kmalloc_caches[2] = create_kmalloc_cache(NULL, 192, flags);
96099+ kmalloc_caches[2] = create_kmalloc_cache(NULL, 192, SLAB_USERCOPY | flags);
96100 }
96101
96102 /* Kmalloc array is now usable */
96103@@ -583,6 +605,23 @@ void __init create_kmalloc_caches(unsigned long flags)
96104 }
96105 }
96106 #endif
96107+
96108+#ifdef CONFIG_PAX_USERCOPY_SLABS
96109+ for (i = 0; i <= KMALLOC_SHIFT_HIGH; i++) {
96110+ struct kmem_cache *s = kmalloc_caches[i];
96111+
96112+ if (s) {
96113+ int size = kmalloc_size(i);
96114+ char *n = kasprintf(GFP_NOWAIT,
96115+ "usercopy-kmalloc-%d", size);
96116+
96117+ BUG_ON(!n);
96118+ kmalloc_usercopy_caches[i] = create_kmalloc_cache(n,
96119+ size, SLAB_USERCOPY | flags);
96120+ }
96121+ }
96122+#endif
96123+
96124 }
96125 #endif /* !CONFIG_SLOB */
96126
96127@@ -623,6 +662,9 @@ void print_slabinfo_header(struct seq_file *m)
96128 seq_puts(m, " : globalstat <listallocs> <maxobjs> <grown> <reaped> "
96129 "<error> <maxfreeable> <nodeallocs> <remotefrees> <alienoverflow>");
96130 seq_puts(m, " : cpustat <allochit> <allocmiss> <freehit> <freemiss>");
96131+#ifdef CONFIG_PAX_MEMORY_SANITIZE
96132+ seq_puts(m, " : pax <sanitized> <not_sanitized>");
96133+#endif
96134 #endif
96135 seq_putc(m, '\n');
96136 }
96137diff --git a/mm/slob.c b/mm/slob.c
96138index 730cad4..8cfd442 100644
96139--- a/mm/slob.c
96140+++ b/mm/slob.c
96141@@ -157,7 +157,7 @@ static void set_slob(slob_t *s, slobidx_t size, slob_t *next)
96142 /*
96143 * Return the size of a slob block.
96144 */
96145-static slobidx_t slob_units(slob_t *s)
96146+static slobidx_t slob_units(const slob_t *s)
96147 {
96148 if (s->units > 0)
96149 return s->units;
96150@@ -167,7 +167,7 @@ static slobidx_t slob_units(slob_t *s)
96151 /*
96152 * Return the next free slob block pointer after this one.
96153 */
96154-static slob_t *slob_next(slob_t *s)
96155+static slob_t *slob_next(const slob_t *s)
96156 {
96157 slob_t *base = (slob_t *)((unsigned long)s & PAGE_MASK);
96158 slobidx_t next;
96159@@ -182,14 +182,14 @@ static slob_t *slob_next(slob_t *s)
96160 /*
96161 * Returns true if s is the last free block in its page.
96162 */
96163-static int slob_last(slob_t *s)
96164+static int slob_last(const slob_t *s)
96165 {
96166 return !((unsigned long)slob_next(s) & ~PAGE_MASK);
96167 }
96168
96169-static void *slob_new_pages(gfp_t gfp, int order, int node)
96170+static struct page *slob_new_pages(gfp_t gfp, unsigned int order, int node)
96171 {
96172- void *page;
96173+ struct page *page;
96174
96175 #ifdef CONFIG_NUMA
96176 if (node != NUMA_NO_NODE)
96177@@ -201,14 +201,18 @@ static void *slob_new_pages(gfp_t gfp, int order, int node)
96178 if (!page)
96179 return NULL;
96180
96181- return page_address(page);
96182+ __SetPageSlab(page);
96183+ return page;
96184 }
96185
96186-static void slob_free_pages(void *b, int order)
96187+static void slob_free_pages(struct page *sp, int order)
96188 {
96189 if (current->reclaim_state)
96190 current->reclaim_state->reclaimed_slab += 1 << order;
96191- free_pages((unsigned long)b, order);
96192+ __ClearPageSlab(sp);
96193+ page_mapcount_reset(sp);
96194+ sp->private = 0;
96195+ __free_pages(sp, order);
96196 }
96197
96198 /*
96199@@ -313,15 +317,15 @@ static void *slob_alloc(size_t size, gfp_t gfp, int align, int node)
96200
96201 /* Not enough space: must allocate a new page */
96202 if (!b) {
96203- b = slob_new_pages(gfp & ~__GFP_ZERO, 0, node);
96204- if (!b)
96205+ sp = slob_new_pages(gfp & ~__GFP_ZERO, 0, node);
96206+ if (!sp)
96207 return NULL;
96208- sp = virt_to_page(b);
96209- __SetPageSlab(sp);
96210+ b = page_address(sp);
96211
96212 spin_lock_irqsave(&slob_lock, flags);
96213 sp->units = SLOB_UNITS(PAGE_SIZE);
96214 sp->freelist = b;
96215+ sp->private = 0;
96216 INIT_LIST_HEAD(&sp->lru);
96217 set_slob(b, SLOB_UNITS(PAGE_SIZE), b + SLOB_UNITS(PAGE_SIZE));
96218 set_slob_page_free(sp, slob_list);
96219@@ -359,12 +363,15 @@ static void slob_free(void *block, int size)
96220 if (slob_page_free(sp))
96221 clear_slob_page_free(sp);
96222 spin_unlock_irqrestore(&slob_lock, flags);
96223- __ClearPageSlab(sp);
96224- page_mapcount_reset(sp);
96225- slob_free_pages(b, 0);
96226+ slob_free_pages(sp, 0);
96227 return;
96228 }
96229
96230+#ifdef CONFIG_PAX_MEMORY_SANITIZE
96231+ if (pax_sanitize_slab)
96232+ memset(block, PAX_MEMORY_SANITIZE_VALUE, size);
96233+#endif
96234+
96235 if (!slob_page_free(sp)) {
96236 /* This slob page is about to become partially free. Easy! */
96237 sp->units = units;
96238@@ -424,11 +431,10 @@ out:
96239 */
96240
96241 static __always_inline void *
96242-__do_kmalloc_node(size_t size, gfp_t gfp, int node, unsigned long caller)
96243+__do_kmalloc_node_align(size_t size, gfp_t gfp, int node, unsigned long caller, int align)
96244 {
96245- unsigned int *m;
96246- int align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
96247- void *ret;
96248+ slob_t *m;
96249+ void *ret = NULL;
96250
96251 gfp &= gfp_allowed_mask;
96252
96253@@ -442,23 +448,41 @@ __do_kmalloc_node(size_t size, gfp_t gfp, int node, unsigned long caller)
96254
96255 if (!m)
96256 return NULL;
96257- *m = size;
96258+ BUILD_BUG_ON(ARCH_KMALLOC_MINALIGN < 2 * SLOB_UNIT);
96259+ BUILD_BUG_ON(ARCH_SLAB_MINALIGN < 2 * SLOB_UNIT);
96260+ m[0].units = size;
96261+ m[1].units = align;
96262 ret = (void *)m + align;
96263
96264 trace_kmalloc_node(caller, ret,
96265 size, size + align, gfp, node);
96266 } else {
96267 unsigned int order = get_order(size);
96268+ struct page *page;
96269
96270 if (likely(order))
96271 gfp |= __GFP_COMP;
96272- ret = slob_new_pages(gfp, order, node);
96273+ page = slob_new_pages(gfp, order, node);
96274+ if (page) {
96275+ ret = page_address(page);
96276+ page->private = size;
96277+ }
96278
96279 trace_kmalloc_node(caller, ret,
96280 size, PAGE_SIZE << order, gfp, node);
96281 }
96282
96283- kmemleak_alloc(ret, size, 1, gfp);
96284+ return ret;
96285+}
96286+
96287+static __always_inline void *
96288+__do_kmalloc_node(size_t size, gfp_t gfp, int node, unsigned long caller)
96289+{
96290+ int align = max(ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
96291+ void *ret = __do_kmalloc_node_align(size, gfp, node, caller, align);
96292+
96293+ if (!ZERO_OR_NULL_PTR(ret))
96294+ kmemleak_alloc(ret, size, 1, gfp);
96295 return ret;
96296 }
96297
96298@@ -493,34 +517,112 @@ void kfree(const void *block)
96299 return;
96300 kmemleak_free(block);
96301
96302+ VM_BUG_ON(!virt_addr_valid(block));
96303 sp = virt_to_page(block);
96304- if (PageSlab(sp)) {
96305+ VM_BUG_ON(!PageSlab(sp));
96306+ if (!sp->private) {
96307 int align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
96308- unsigned int *m = (unsigned int *)(block - align);
96309- slob_free(m, *m + align);
96310- } else
96311+ slob_t *m = (slob_t *)(block - align);
96312+ slob_free(m, m[0].units + align);
96313+ } else {
96314+ __ClearPageSlab(sp);
96315+ page_mapcount_reset(sp);
96316+ sp->private = 0;
96317 __free_pages(sp, compound_order(sp));
96318+ }
96319 }
96320 EXPORT_SYMBOL(kfree);
96321
96322+bool is_usercopy_object(const void *ptr)
96323+{
96324+ if (!slab_is_available())
96325+ return false;
96326+
96327+ // PAX: TODO
96328+
96329+ return false;
96330+}
96331+
96332+#ifdef CONFIG_PAX_USERCOPY
96333+const char *check_heap_object(const void *ptr, unsigned long n)
96334+{
96335+ struct page *page;
96336+ const slob_t *free;
96337+ const void *base;
96338+ unsigned long flags;
96339+
96340+ if (ZERO_OR_NULL_PTR(ptr))
96341+ return "<null>";
96342+
96343+ if (!virt_addr_valid(ptr))
96344+ return NULL;
96345+
96346+ page = virt_to_head_page(ptr);
96347+ if (!PageSlab(page))
96348+ return NULL;
96349+
96350+ if (page->private) {
96351+ base = page;
96352+ if (base <= ptr && n <= page->private - (ptr - base))
96353+ return NULL;
96354+ return "<slob>";
96355+ }
96356+
96357+ /* some tricky double walking to find the chunk */
96358+ spin_lock_irqsave(&slob_lock, flags);
96359+ base = (void *)((unsigned long)ptr & PAGE_MASK);
96360+ free = page->freelist;
96361+
96362+ while (!slob_last(free) && (void *)free <= ptr) {
96363+ base = free + slob_units(free);
96364+ free = slob_next(free);
96365+ }
96366+
96367+ while (base < (void *)free) {
96368+ slobidx_t m = ((slob_t *)base)[0].units, align = ((slob_t *)base)[1].units;
96369+ int size = SLOB_UNIT * SLOB_UNITS(m + align);
96370+ int offset;
96371+
96372+ if (ptr < base + align)
96373+ break;
96374+
96375+ offset = ptr - base - align;
96376+ if (offset >= m) {
96377+ base += size;
96378+ continue;
96379+ }
96380+
96381+ if (n > m - offset)
96382+ break;
96383+
96384+ spin_unlock_irqrestore(&slob_lock, flags);
96385+ return NULL;
96386+ }
96387+
96388+ spin_unlock_irqrestore(&slob_lock, flags);
96389+ return "<slob>";
96390+}
96391+#endif
96392+
96393 /* can't use ksize for kmem_cache_alloc memory, only kmalloc */
96394 size_t ksize(const void *block)
96395 {
96396 struct page *sp;
96397 int align;
96398- unsigned int *m;
96399+ slob_t *m;
96400
96401 BUG_ON(!block);
96402 if (unlikely(block == ZERO_SIZE_PTR))
96403 return 0;
96404
96405 sp = virt_to_page(block);
96406- if (unlikely(!PageSlab(sp)))
96407- return PAGE_SIZE << compound_order(sp);
96408+ VM_BUG_ON(!PageSlab(sp));
96409+ if (sp->private)
96410+ return sp->private;
96411
96412 align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN);
96413- m = (unsigned int *)(block - align);
96414- return SLOB_UNITS(*m) * SLOB_UNIT;
96415+ m = (slob_t *)(block - align);
96416+ return SLOB_UNITS(m[0].units) * SLOB_UNIT;
96417 }
96418 EXPORT_SYMBOL(ksize);
96419
96420@@ -536,23 +638,33 @@ int __kmem_cache_create(struct kmem_cache *c, unsigned long flags)
96421
96422 void *slob_alloc_node(struct kmem_cache *c, gfp_t flags, int node)
96423 {
96424- void *b;
96425+ void *b = NULL;
96426
96427 flags &= gfp_allowed_mask;
96428
96429 lockdep_trace_alloc(flags);
96430
96431+#ifdef CONFIG_PAX_USERCOPY_SLABS
96432+ b = __do_kmalloc_node_align(c->size, flags, node, _RET_IP_, c->align);
96433+#else
96434 if (c->size < PAGE_SIZE) {
96435 b = slob_alloc(c->size, flags, c->align, node);
96436 trace_kmem_cache_alloc_node(_RET_IP_, b, c->object_size,
96437 SLOB_UNITS(c->size) * SLOB_UNIT,
96438 flags, node);
96439 } else {
96440- b = slob_new_pages(flags, get_order(c->size), node);
96441+ struct page *sp;
96442+
96443+ sp = slob_new_pages(flags, get_order(c->size), node);
96444+ if (sp) {
96445+ b = page_address(sp);
96446+ sp->private = c->size;
96447+ }
96448 trace_kmem_cache_alloc_node(_RET_IP_, b, c->object_size,
96449 PAGE_SIZE << get_order(c->size),
96450 flags, node);
96451 }
96452+#endif
96453
96454 if (b && c->ctor)
96455 c->ctor(b);
96456@@ -584,10 +696,14 @@ EXPORT_SYMBOL(kmem_cache_alloc_node);
96457
96458 static void __kmem_cache_free(void *b, int size)
96459 {
96460- if (size < PAGE_SIZE)
96461+ struct page *sp;
96462+
96463+ sp = virt_to_page(b);
96464+ BUG_ON(!PageSlab(sp));
96465+ if (!sp->private)
96466 slob_free(b, size);
96467 else
96468- slob_free_pages(b, get_order(size));
96469+ slob_free_pages(sp, get_order(size));
96470 }
96471
96472 static void kmem_rcu_free(struct rcu_head *head)
96473@@ -600,17 +716,31 @@ static void kmem_rcu_free(struct rcu_head *head)
96474
96475 void kmem_cache_free(struct kmem_cache *c, void *b)
96476 {
96477+ int size = c->size;
96478+
96479+#ifdef CONFIG_PAX_USERCOPY_SLABS
96480+ if (size + c->align < PAGE_SIZE) {
96481+ size += c->align;
96482+ b -= c->align;
96483+ }
96484+#endif
96485+
96486 kmemleak_free_recursive(b, c->flags);
96487 if (unlikely(c->flags & SLAB_DESTROY_BY_RCU)) {
96488 struct slob_rcu *slob_rcu;
96489- slob_rcu = b + (c->size - sizeof(struct slob_rcu));
96490- slob_rcu->size = c->size;
96491+ slob_rcu = b + (size - sizeof(struct slob_rcu));
96492+ slob_rcu->size = size;
96493 call_rcu(&slob_rcu->head, kmem_rcu_free);
96494 } else {
96495- __kmem_cache_free(b, c->size);
96496+ __kmem_cache_free(b, size);
96497 }
96498
96499+#ifdef CONFIG_PAX_USERCOPY_SLABS
96500+ trace_kfree(_RET_IP_, b);
96501+#else
96502 trace_kmem_cache_free(_RET_IP_, b);
96503+#endif
96504+
96505 }
96506 EXPORT_SYMBOL(kmem_cache_free);
96507
96508diff --git a/mm/slub.c b/mm/slub.c
96509index 2b1ce69..4a2193f 100644
96510--- a/mm/slub.c
96511+++ b/mm/slub.c
96512@@ -207,7 +207,7 @@ struct track {
96513
96514 enum track_item { TRACK_ALLOC, TRACK_FREE };
96515
96516-#ifdef CONFIG_SYSFS
96517+#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
96518 static int sysfs_slab_add(struct kmem_cache *);
96519 static int sysfs_slab_alias(struct kmem_cache *, const char *);
96520 static void memcg_propagate_slab_attrs(struct kmem_cache *s);
96521@@ -546,7 +546,7 @@ static void print_track(const char *s, struct track *t)
96522 if (!t->addr)
96523 return;
96524
96525- printk(KERN_ERR "INFO: %s in %pS age=%lu cpu=%u pid=%d\n",
96526+ printk(KERN_ERR "INFO: %s in %pA age=%lu cpu=%u pid=%d\n",
96527 s, (void *)t->addr, jiffies - t->when, t->cpu, t->pid);
96528 #ifdef CONFIG_STACKTRACE
96529 {
96530@@ -2666,6 +2666,14 @@ static __always_inline void slab_free(struct kmem_cache *s,
96531
96532 slab_free_hook(s, x);
96533
96534+#ifdef CONFIG_PAX_MEMORY_SANITIZE
96535+ if (pax_sanitize_slab && !(s->flags & SLAB_NO_SANITIZE)) {
96536+ memset(x, PAX_MEMORY_SANITIZE_VALUE, s->object_size);
96537+ if (s->ctor)
96538+ s->ctor(x);
96539+ }
96540+#endif
96541+
96542 redo:
96543 /*
96544 * Determine the currently cpus per cpu slab.
96545@@ -2733,7 +2741,7 @@ static int slub_min_objects;
96546 * Merge control. If this is set then no merging of slab caches will occur.
96547 * (Could be removed. This was introduced to pacify the merge skeptics.)
96548 */
96549-static int slub_nomerge;
96550+static int slub_nomerge = 1;
96551
96552 /*
96553 * Calculate the order of allocation given an slab object size.
96554@@ -3014,6 +3022,9 @@ static int calculate_sizes(struct kmem_cache *s, int forced_order)
96555 s->inuse = size;
96556
96557 if (((flags & (SLAB_DESTROY_BY_RCU | SLAB_POISON)) ||
96558+#ifdef CONFIG_PAX_MEMORY_SANITIZE
96559+ (pax_sanitize_slab && !(flags & SLAB_NO_SANITIZE)) ||
96560+#endif
96561 s->ctor)) {
96562 /*
96563 * Relocate free pointer after the object if it is not
96564@@ -3343,6 +3354,59 @@ void *__kmalloc_node(size_t size, gfp_t flags, int node)
96565 EXPORT_SYMBOL(__kmalloc_node);
96566 #endif
96567
96568+bool is_usercopy_object(const void *ptr)
96569+{
96570+ struct page *page;
96571+ struct kmem_cache *s;
96572+
96573+ if (ZERO_OR_NULL_PTR(ptr))
96574+ return false;
96575+
96576+ if (!slab_is_available())
96577+ return false;
96578+
96579+ if (!virt_addr_valid(ptr))
96580+ return false;
96581+
96582+ page = virt_to_head_page(ptr);
96583+
96584+ if (!PageSlab(page))
96585+ return false;
96586+
96587+ s = page->slab_cache;
96588+ return s->flags & SLAB_USERCOPY;
96589+}
96590+
96591+#ifdef CONFIG_PAX_USERCOPY
96592+const char *check_heap_object(const void *ptr, unsigned long n)
96593+{
96594+ struct page *page;
96595+ struct kmem_cache *s;
96596+ unsigned long offset;
96597+
96598+ if (ZERO_OR_NULL_PTR(ptr))
96599+ return "<null>";
96600+
96601+ if (!virt_addr_valid(ptr))
96602+ return NULL;
96603+
96604+ page = virt_to_head_page(ptr);
96605+
96606+ if (!PageSlab(page))
96607+ return NULL;
96608+
96609+ s = page->slab_cache;
96610+ if (!(s->flags & SLAB_USERCOPY))
96611+ return s->name;
96612+
96613+ offset = (ptr - page_address(page)) % s->size;
96614+ if (offset <= s->object_size && n <= s->object_size - offset)
96615+ return NULL;
96616+
96617+ return s->name;
96618+}
96619+#endif
96620+
96621 size_t ksize(const void *object)
96622 {
96623 struct page *page;
96624@@ -3371,6 +3435,7 @@ void kfree(const void *x)
96625 if (unlikely(ZERO_OR_NULL_PTR(x)))
96626 return;
96627
96628+ VM_BUG_ON(!virt_addr_valid(x));
96629 page = virt_to_head_page(x);
96630 if (unlikely(!PageSlab(page))) {
96631 BUG_ON(!PageCompound(page));
96632@@ -3679,7 +3744,7 @@ static int slab_unmergeable(struct kmem_cache *s)
96633 /*
96634 * We may have set a slab to be unmergeable during bootstrap.
96635 */
96636- if (s->refcount < 0)
96637+ if (atomic_read(&s->refcount) < 0)
96638 return 1;
96639
96640 return 0;
96641@@ -3736,7 +3801,7 @@ __kmem_cache_alias(const char *name, size_t size, size_t align,
96642 int i;
96643 struct kmem_cache *c;
96644
96645- s->refcount++;
96646+ atomic_inc(&s->refcount);
96647
96648 /*
96649 * Adjust the object sizes so that we clear
96650@@ -3755,7 +3820,7 @@ __kmem_cache_alias(const char *name, size_t size, size_t align,
96651 }
96652
96653 if (sysfs_slab_alias(s, name)) {
96654- s->refcount--;
96655+ atomic_dec(&s->refcount);
96656 s = NULL;
96657 }
96658 }
96659@@ -3872,7 +3937,7 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t gfpflags,
96660 }
96661 #endif
96662
96663-#ifdef CONFIG_SYSFS
96664+#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
96665 static int count_inuse(struct page *page)
96666 {
96667 return page->inuse;
96668@@ -4156,7 +4221,11 @@ static int list_locations(struct kmem_cache *s, char *buf,
96669 len += sprintf(buf + len, "%7ld ", l->count);
96670
96671 if (l->addr)
96672+#ifdef CONFIG_GRKERNSEC_HIDESYM
96673+ len += sprintf(buf + len, "%pS", NULL);
96674+#else
96675 len += sprintf(buf + len, "%pS", (void *)l->addr);
96676+#endif
96677 else
96678 len += sprintf(buf + len, "<not-available>");
96679
96680@@ -4261,12 +4330,12 @@ static void resiliency_test(void)
96681 validate_slab_cache(kmalloc_caches[9]);
96682 }
96683 #else
96684-#ifdef CONFIG_SYSFS
96685+#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
96686 static void resiliency_test(void) {};
96687 #endif
96688 #endif
96689
96690-#ifdef CONFIG_SYSFS
96691+#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
96692 enum slab_stat_type {
96693 SL_ALL, /* All slabs */
96694 SL_PARTIAL, /* Only partially allocated slabs */
96695@@ -4506,13 +4575,17 @@ static ssize_t ctor_show(struct kmem_cache *s, char *buf)
96696 {
96697 if (!s->ctor)
96698 return 0;
96699+#ifdef CONFIG_GRKERNSEC_HIDESYM
96700+ return sprintf(buf, "%pS\n", NULL);
96701+#else
96702 return sprintf(buf, "%pS\n", s->ctor);
96703+#endif
96704 }
96705 SLAB_ATTR_RO(ctor);
96706
96707 static ssize_t aliases_show(struct kmem_cache *s, char *buf)
96708 {
96709- return sprintf(buf, "%d\n", s->refcount - 1);
96710+ return sprintf(buf, "%d\n", atomic_read(&s->refcount) - 1);
96711 }
96712 SLAB_ATTR_RO(aliases);
96713
96714@@ -4600,6 +4673,14 @@ static ssize_t cache_dma_show(struct kmem_cache *s, char *buf)
96715 SLAB_ATTR_RO(cache_dma);
96716 #endif
96717
96718+#ifdef CONFIG_PAX_USERCOPY_SLABS
96719+static ssize_t usercopy_show(struct kmem_cache *s, char *buf)
96720+{
96721+ return sprintf(buf, "%d\n", !!(s->flags & SLAB_USERCOPY));
96722+}
96723+SLAB_ATTR_RO(usercopy);
96724+#endif
96725+
96726 static ssize_t destroy_by_rcu_show(struct kmem_cache *s, char *buf)
96727 {
96728 return sprintf(buf, "%d\n", !!(s->flags & SLAB_DESTROY_BY_RCU));
96729@@ -4934,6 +5015,9 @@ static struct attribute *slab_attrs[] = {
96730 #ifdef CONFIG_ZONE_DMA
96731 &cache_dma_attr.attr,
96732 #endif
96733+#ifdef CONFIG_PAX_USERCOPY_SLABS
96734+ &usercopy_attr.attr,
96735+#endif
96736 #ifdef CONFIG_NUMA
96737 &remote_node_defrag_ratio_attr.attr,
96738 #endif
96739@@ -5184,6 +5268,7 @@ static char *create_unique_id(struct kmem_cache *s)
96740 return name;
96741 }
96742
96743+#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
96744 static int sysfs_slab_add(struct kmem_cache *s)
96745 {
96746 int err;
96747@@ -5257,6 +5342,7 @@ void sysfs_slab_remove(struct kmem_cache *s)
96748 kobject_del(&s->kobj);
96749 kobject_put(&s->kobj);
96750 }
96751+#endif
96752
96753 /*
96754 * Need to buffer aliases during bootup until sysfs becomes
96755@@ -5270,6 +5356,7 @@ struct saved_alias {
96756
96757 static struct saved_alias *alias_list;
96758
96759+#if defined(CONFIG_SYSFS) && !defined(CONFIG_GRKERNSEC_PROC_ADD)
96760 static int sysfs_slab_alias(struct kmem_cache *s, const char *name)
96761 {
96762 struct saved_alias *al;
96763@@ -5292,6 +5379,7 @@ static int sysfs_slab_alias(struct kmem_cache *s, const char *name)
96764 alias_list = al;
96765 return 0;
96766 }
96767+#endif
96768
96769 static int __init slab_sysfs_init(void)
96770 {
96771diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
96772index 4cba9c2..b4f9fcc 100644
96773--- a/mm/sparse-vmemmap.c
96774+++ b/mm/sparse-vmemmap.c
96775@@ -131,7 +131,7 @@ pud_t * __meminit vmemmap_pud_populate(pgd_t *pgd, unsigned long addr, int node)
96776 void *p = vmemmap_alloc_block(PAGE_SIZE, node);
96777 if (!p)
96778 return NULL;
96779- pud_populate(&init_mm, pud, p);
96780+ pud_populate_kernel(&init_mm, pud, p);
96781 }
96782 return pud;
96783 }
96784@@ -143,7 +143,7 @@ pgd_t * __meminit vmemmap_pgd_populate(unsigned long addr, int node)
96785 void *p = vmemmap_alloc_block(PAGE_SIZE, node);
96786 if (!p)
96787 return NULL;
96788- pgd_populate(&init_mm, pgd, p);
96789+ pgd_populate_kernel(&init_mm, pgd, p);
96790 }
96791 return pgd;
96792 }
96793diff --git a/mm/sparse.c b/mm/sparse.c
96794index d1b48b6..6e8590e 100644
96795--- a/mm/sparse.c
96796+++ b/mm/sparse.c
96797@@ -750,7 +750,7 @@ static void clear_hwpoisoned_pages(struct page *memmap, int nr_pages)
96798
96799 for (i = 0; i < PAGES_PER_SECTION; i++) {
96800 if (PageHWPoison(&memmap[i])) {
96801- atomic_long_sub(1, &num_poisoned_pages);
96802+ atomic_long_sub_unchecked(1, &num_poisoned_pages);
96803 ClearPageHWPoison(&memmap[i]);
96804 }
96805 }
96806diff --git a/mm/swap.c b/mm/swap.c
96807index 9ce43ba..43bdc4c 100644
96808--- a/mm/swap.c
96809+++ b/mm/swap.c
96810@@ -31,6 +31,7 @@
96811 #include <linux/memcontrol.h>
96812 #include <linux/gfp.h>
96813 #include <linux/uio.h>
96814+#include <linux/hugetlb.h>
96815
96816 #include "internal.h"
96817
96818@@ -76,6 +77,8 @@ static void __put_compound_page(struct page *page)
96819
96820 __page_cache_release(page);
96821 dtor = get_compound_page_dtor(page);
96822+ if (!PageHuge(page))
96823+ BUG_ON(dtor != free_compound_page);
96824 (*dtor)(page);
96825 }
96826
96827diff --git a/mm/swapfile.c b/mm/swapfile.c
96828index 4a7f7e6..22cddf5 100644
96829--- a/mm/swapfile.c
96830+++ b/mm/swapfile.c
96831@@ -66,7 +66,7 @@ static DEFINE_MUTEX(swapon_mutex);
96832
96833 static DECLARE_WAIT_QUEUE_HEAD(proc_poll_wait);
96834 /* Activity counter to indicate that a swapon or swapoff has occurred */
96835-static atomic_t proc_poll_event = ATOMIC_INIT(0);
96836+static atomic_unchecked_t proc_poll_event = ATOMIC_INIT(0);
96837
96838 static inline unsigned char swap_count(unsigned char ent)
96839 {
96840@@ -1959,7 +1959,7 @@ SYSCALL_DEFINE1(swapoff, const char __user *, specialfile)
96841 spin_unlock(&swap_lock);
96842
96843 err = 0;
96844- atomic_inc(&proc_poll_event);
96845+ atomic_inc_unchecked(&proc_poll_event);
96846 wake_up_interruptible(&proc_poll_wait);
96847
96848 out_dput:
96849@@ -1976,8 +1976,8 @@ static unsigned swaps_poll(struct file *file, poll_table *wait)
96850
96851 poll_wait(file, &proc_poll_wait, wait);
96852
96853- if (seq->poll_event != atomic_read(&proc_poll_event)) {
96854- seq->poll_event = atomic_read(&proc_poll_event);
96855+ if (seq->poll_event != atomic_read_unchecked(&proc_poll_event)) {
96856+ seq->poll_event = atomic_read_unchecked(&proc_poll_event);
96857 return POLLIN | POLLRDNORM | POLLERR | POLLPRI;
96858 }
96859
96860@@ -2075,7 +2075,7 @@ static int swaps_open(struct inode *inode, struct file *file)
96861 return ret;
96862
96863 seq = file->private_data;
96864- seq->poll_event = atomic_read(&proc_poll_event);
96865+ seq->poll_event = atomic_read_unchecked(&proc_poll_event);
96866 return 0;
96867 }
96868
96869@@ -2534,7 +2534,7 @@ SYSCALL_DEFINE2(swapon, const char __user *, specialfile, int, swap_flags)
96870 (frontswap_map) ? "FS" : "");
96871
96872 mutex_unlock(&swapon_mutex);
96873- atomic_inc(&proc_poll_event);
96874+ atomic_inc_unchecked(&proc_poll_event);
96875 wake_up_interruptible(&proc_poll_wait);
96876
96877 if (S_ISREG(inode->i_mode))
96878diff --git a/mm/util.c b/mm/util.c
96879index d5ea733..e8953f9 100644
96880--- a/mm/util.c
96881+++ b/mm/util.c
96882@@ -299,6 +299,12 @@ done:
96883 void arch_pick_mmap_layout(struct mm_struct *mm)
96884 {
96885 mm->mmap_base = TASK_UNMAPPED_BASE;
96886+
96887+#ifdef CONFIG_PAX_RANDMMAP
96888+ if (mm->pax_flags & MF_PAX_RANDMMAP)
96889+ mm->mmap_base += mm->delta_mmap;
96890+#endif
96891+
96892 mm->get_unmapped_area = arch_get_unmapped_area;
96893 }
96894 #endif
96895@@ -475,6 +481,9 @@ int get_cmdline(struct task_struct *task, char *buffer, int buflen)
96896 if (!mm->arg_end)
96897 goto out_mm; /* Shh! No looking before we're done */
96898
96899+ if (gr_acl_handle_procpidmem(task))
96900+ goto out_mm;
96901+
96902 len = mm->arg_end - mm->arg_start;
96903
96904 if (len > buflen)
96905diff --git a/mm/vmalloc.c b/mm/vmalloc.c
96906index bf233b2..1dfa1bc 100644
96907--- a/mm/vmalloc.c
96908+++ b/mm/vmalloc.c
96909@@ -40,6 +40,21 @@ struct vfree_deferred {
96910 };
96911 static DEFINE_PER_CPU(struct vfree_deferred, vfree_deferred);
96912
96913+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
96914+struct stack_deferred_llist {
96915+ struct llist_head list;
96916+ void *stack;
96917+ void *lowmem_stack;
96918+};
96919+
96920+struct stack_deferred {
96921+ struct stack_deferred_llist list;
96922+ struct work_struct wq;
96923+};
96924+
96925+static DEFINE_PER_CPU(struct stack_deferred, stack_deferred);
96926+#endif
96927+
96928 static void __vunmap(const void *, int);
96929
96930 static void free_work(struct work_struct *w)
96931@@ -47,12 +62,30 @@ static void free_work(struct work_struct *w)
96932 struct vfree_deferred *p = container_of(w, struct vfree_deferred, wq);
96933 struct llist_node *llnode = llist_del_all(&p->list);
96934 while (llnode) {
96935- void *p = llnode;
96936+ void *x = llnode;
96937 llnode = llist_next(llnode);
96938- __vunmap(p, 1);
96939+ __vunmap(x, 1);
96940 }
96941 }
96942
96943+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
96944+static void unmap_work(struct work_struct *w)
96945+{
96946+ struct stack_deferred *p = container_of(w, struct stack_deferred, wq);
96947+ struct llist_node *llnode = llist_del_all(&p->list.list);
96948+ while (llnode) {
96949+ struct stack_deferred_llist *x =
96950+ llist_entry((struct llist_head *)llnode,
96951+ struct stack_deferred_llist, list);
96952+ void *stack = ACCESS_ONCE(x->stack);
96953+ void *lowmem_stack = ACCESS_ONCE(x->lowmem_stack);
96954+ llnode = llist_next(llnode);
96955+ __vunmap(stack, 0);
96956+ free_memcg_kmem_pages((unsigned long)lowmem_stack, THREAD_SIZE_ORDER);
96957+ }
96958+}
96959+#endif
96960+
96961 /*** Page table manipulation functions ***/
96962
96963 static void vunmap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end)
96964@@ -61,8 +94,19 @@ static void vunmap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end)
96965
96966 pte = pte_offset_kernel(pmd, addr);
96967 do {
96968- pte_t ptent = ptep_get_and_clear(&init_mm, addr, pte);
96969- WARN_ON(!pte_none(ptent) && !pte_present(ptent));
96970+
96971+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
96972+ if ((unsigned long)MODULES_EXEC_VADDR <= addr && addr < (unsigned long)MODULES_EXEC_END) {
96973+ BUG_ON(!pte_exec(*pte));
96974+ set_pte_at(&init_mm, addr, pte, pfn_pte(__pa(addr) >> PAGE_SHIFT, PAGE_KERNEL_EXEC));
96975+ continue;
96976+ }
96977+#endif
96978+
96979+ {
96980+ pte_t ptent = ptep_get_and_clear(&init_mm, addr, pte);
96981+ WARN_ON(!pte_none(ptent) && !pte_present(ptent));
96982+ }
96983 } while (pte++, addr += PAGE_SIZE, addr != end);
96984 }
96985
96986@@ -122,16 +166,29 @@ static int vmap_pte_range(pmd_t *pmd, unsigned long addr,
96987 pte = pte_alloc_kernel(pmd, addr);
96988 if (!pte)
96989 return -ENOMEM;
96990+
96991+ pax_open_kernel();
96992 do {
96993 struct page *page = pages[*nr];
96994
96995- if (WARN_ON(!pte_none(*pte)))
96996+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
96997+ if (pgprot_val(prot) & _PAGE_NX)
96998+#endif
96999+
97000+ if (!pte_none(*pte)) {
97001+ pax_close_kernel();
97002+ WARN_ON(1);
97003 return -EBUSY;
97004- if (WARN_ON(!page))
97005+ }
97006+ if (!page) {
97007+ pax_close_kernel();
97008+ WARN_ON(1);
97009 return -ENOMEM;
97010+ }
97011 set_pte_at(&init_mm, addr, pte, mk_pte(page, prot));
97012 (*nr)++;
97013 } while (pte++, addr += PAGE_SIZE, addr != end);
97014+ pax_close_kernel();
97015 return 0;
97016 }
97017
97018@@ -141,7 +198,7 @@ static int vmap_pmd_range(pud_t *pud, unsigned long addr,
97019 pmd_t *pmd;
97020 unsigned long next;
97021
97022- pmd = pmd_alloc(&init_mm, pud, addr);
97023+ pmd = pmd_alloc_kernel(&init_mm, pud, addr);
97024 if (!pmd)
97025 return -ENOMEM;
97026 do {
97027@@ -158,7 +215,7 @@ static int vmap_pud_range(pgd_t *pgd, unsigned long addr,
97028 pud_t *pud;
97029 unsigned long next;
97030
97031- pud = pud_alloc(&init_mm, pgd, addr);
97032+ pud = pud_alloc_kernel(&init_mm, pgd, addr);
97033 if (!pud)
97034 return -ENOMEM;
97035 do {
97036@@ -218,6 +275,12 @@ int is_vmalloc_or_module_addr(const void *x)
97037 if (addr >= MODULES_VADDR && addr < MODULES_END)
97038 return 1;
97039 #endif
97040+
97041+#if defined(CONFIG_X86_32) && defined(CONFIG_PAX_KERNEXEC)
97042+ if (x >= (const void *)MODULES_EXEC_VADDR && x < (const void *)MODULES_EXEC_END)
97043+ return 1;
97044+#endif
97045+
97046 return is_vmalloc_addr(x);
97047 }
97048
97049@@ -238,8 +301,14 @@ struct page *vmalloc_to_page(const void *vmalloc_addr)
97050
97051 if (!pgd_none(*pgd)) {
97052 pud_t *pud = pud_offset(pgd, addr);
97053+#ifdef CONFIG_X86
97054+ if (!pud_large(*pud))
97055+#endif
97056 if (!pud_none(*pud)) {
97057 pmd_t *pmd = pmd_offset(pud, addr);
97058+#ifdef CONFIG_X86
97059+ if (!pmd_large(*pmd))
97060+#endif
97061 if (!pmd_none(*pmd)) {
97062 pte_t *ptep, pte;
97063
97064@@ -1183,13 +1252,23 @@ void __init vmalloc_init(void)
97065 for_each_possible_cpu(i) {
97066 struct vmap_block_queue *vbq;
97067 struct vfree_deferred *p;
97068+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
97069+ struct stack_deferred *p2;
97070+#endif
97071
97072 vbq = &per_cpu(vmap_block_queue, i);
97073 spin_lock_init(&vbq->lock);
97074 INIT_LIST_HEAD(&vbq->free);
97075+
97076 p = &per_cpu(vfree_deferred, i);
97077 init_llist_head(&p->list);
97078 INIT_WORK(&p->wq, free_work);
97079+
97080+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
97081+ p2 = &per_cpu(stack_deferred, i);
97082+ init_llist_head(&p2->list.list);
97083+ INIT_WORK(&p2->wq, unmap_work);
97084+#endif
97085 }
97086
97087 /* Import existing vmlist entries. */
97088@@ -1317,6 +1396,16 @@ static struct vm_struct *__get_vm_area_node(unsigned long size,
97089 struct vm_struct *area;
97090
97091 BUG_ON(in_interrupt());
97092+
97093+#if defined(CONFIG_X86) && defined(CONFIG_PAX_KERNEXEC)
97094+ if (flags & VM_KERNEXEC) {
97095+ if (start != VMALLOC_START || end != VMALLOC_END)
97096+ return NULL;
97097+ start = (unsigned long)MODULES_EXEC_VADDR;
97098+ end = (unsigned long)MODULES_EXEC_END;
97099+ }
97100+#endif
97101+
97102 if (flags & VM_IOREMAP)
97103 align = 1ul << clamp(fls(size), PAGE_SHIFT, IOREMAP_MAX_ORDER);
97104
97105@@ -1522,6 +1611,23 @@ void vunmap(const void *addr)
97106 }
97107 EXPORT_SYMBOL(vunmap);
97108
97109+#ifdef CONFIG_GRKERNSEC_KSTACKOVERFLOW
97110+void unmap_process_stacks(struct task_struct *task)
97111+{
97112+ if (unlikely(in_interrupt())) {
97113+ struct stack_deferred *p = &__get_cpu_var(stack_deferred);
97114+ struct stack_deferred_llist *list = task->stack;
97115+ list->stack = task->stack;
97116+ list->lowmem_stack = task->lowmem_stack;
97117+ if (llist_add((struct llist_node *)&list->list, &p->list.list))
97118+ schedule_work(&p->wq);
97119+ } else {
97120+ __vunmap(task->stack, 0);
97121+ free_memcg_kmem_pages((unsigned long)task->lowmem_stack, THREAD_SIZE_ORDER);
97122+ }
97123+}
97124+#endif
97125+
97126 /**
97127 * vmap - map an array of pages into virtually contiguous space
97128 * @pages: array of page pointers
97129@@ -1542,6 +1648,11 @@ void *vmap(struct page **pages, unsigned int count,
97130 if (count > totalram_pages)
97131 return NULL;
97132
97133+#if defined(CONFIG_X86) && defined(CONFIG_PAX_KERNEXEC)
97134+ if (!(pgprot_val(prot) & _PAGE_NX))
97135+ flags |= VM_KERNEXEC;
97136+#endif
97137+
97138 area = get_vm_area_caller((count << PAGE_SHIFT), flags,
97139 __builtin_return_address(0));
97140 if (!area)
97141@@ -1642,6 +1753,13 @@ void *__vmalloc_node_range(unsigned long size, unsigned long align,
97142 if (!size || (size >> PAGE_SHIFT) > totalram_pages)
97143 goto fail;
97144
97145+#if defined(CONFIG_X86) && defined(CONFIG_PAX_KERNEXEC)
97146+ if (!(pgprot_val(prot) & _PAGE_NX))
97147+ area = __get_vm_area_node(size, align, VM_ALLOC | VM_UNINITIALIZED | VM_KERNEXEC,
97148+ VMALLOC_START, VMALLOC_END, node, gfp_mask, caller);
97149+ else
97150+#endif
97151+
97152 area = __get_vm_area_node(size, align, VM_ALLOC | VM_UNINITIALIZED,
97153 start, end, node, gfp_mask, caller);
97154 if (!area)
97155@@ -1818,10 +1936,9 @@ EXPORT_SYMBOL(vzalloc_node);
97156 * For tight control over page level allocator and protection flags
97157 * use __vmalloc() instead.
97158 */
97159-
97160 void *vmalloc_exec(unsigned long size)
97161 {
97162- return __vmalloc_node(size, 1, GFP_KERNEL | __GFP_HIGHMEM, PAGE_KERNEL_EXEC,
97163+ return __vmalloc_node(size, 1, GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO, PAGE_KERNEL_EXEC,
97164 NUMA_NO_NODE, __builtin_return_address(0));
97165 }
97166
97167@@ -2128,6 +2245,8 @@ int remap_vmalloc_range_partial(struct vm_area_struct *vma, unsigned long uaddr,
97168 {
97169 struct vm_struct *area;
97170
97171+ BUG_ON(vma->vm_mirror);
97172+
97173 size = PAGE_ALIGN(size);
97174
97175 if (!PAGE_ALIGNED(uaddr) || !PAGE_ALIGNED(kaddr))
97176@@ -2610,7 +2729,11 @@ static int s_show(struct seq_file *m, void *p)
97177 v->addr, v->addr + v->size, v->size);
97178
97179 if (v->caller)
97180+#ifdef CONFIG_GRKERNSEC_HIDESYM
97181+ seq_printf(m, " %pK", v->caller);
97182+#else
97183 seq_printf(m, " %pS", v->caller);
97184+#endif
97185
97186 if (v->nr_pages)
97187 seq_printf(m, " pages=%d", v->nr_pages);
97188diff --git a/mm/vmstat.c b/mm/vmstat.c
97189index 302dd07..3841f1c 100644
97190--- a/mm/vmstat.c
97191+++ b/mm/vmstat.c
97192@@ -20,6 +20,7 @@
97193 #include <linux/writeback.h>
97194 #include <linux/compaction.h>
97195 #include <linux/mm_inline.h>
97196+#include <linux/grsecurity.h>
97197
97198 #include "internal.h"
97199
97200@@ -79,7 +80,7 @@ void vm_events_fold_cpu(int cpu)
97201 *
97202 * vm_stat contains the global counters
97203 */
97204-atomic_long_t vm_stat[NR_VM_ZONE_STAT_ITEMS] __cacheline_aligned_in_smp;
97205+atomic_long_unchecked_t vm_stat[NR_VM_ZONE_STAT_ITEMS] __cacheline_aligned_in_smp;
97206 EXPORT_SYMBOL(vm_stat);
97207
97208 #ifdef CONFIG_SMP
97209@@ -423,7 +424,7 @@ static inline void fold_diff(int *diff)
97210
97211 for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
97212 if (diff[i])
97213- atomic_long_add(diff[i], &vm_stat[i]);
97214+ atomic_long_add_unchecked(diff[i], &vm_stat[i]);
97215 }
97216
97217 /*
97218@@ -455,7 +456,7 @@ static void refresh_cpu_vm_stats(void)
97219 v = this_cpu_xchg(p->vm_stat_diff[i], 0);
97220 if (v) {
97221
97222- atomic_long_add(v, &zone->vm_stat[i]);
97223+ atomic_long_add_unchecked(v, &zone->vm_stat[i]);
97224 global_diff[i] += v;
97225 #ifdef CONFIG_NUMA
97226 /* 3 seconds idle till flush */
97227@@ -517,7 +518,7 @@ void cpu_vm_stats_fold(int cpu)
97228
97229 v = p->vm_stat_diff[i];
97230 p->vm_stat_diff[i] = 0;
97231- atomic_long_add(v, &zone->vm_stat[i]);
97232+ atomic_long_add_unchecked(v, &zone->vm_stat[i]);
97233 global_diff[i] += v;
97234 }
97235 }
97236@@ -537,8 +538,8 @@ void drain_zonestat(struct zone *zone, struct per_cpu_pageset *pset)
97237 if (pset->vm_stat_diff[i]) {
97238 int v = pset->vm_stat_diff[i];
97239 pset->vm_stat_diff[i] = 0;
97240- atomic_long_add(v, &zone->vm_stat[i]);
97241- atomic_long_add(v, &vm_stat[i]);
97242+ atomic_long_add_unchecked(v, &zone->vm_stat[i]);
97243+ atomic_long_add_unchecked(v, &vm_stat[i]);
97244 }
97245 }
97246 #endif
97247@@ -1156,10 +1157,22 @@ static void *vmstat_start(struct seq_file *m, loff_t *pos)
97248 stat_items_size += sizeof(struct vm_event_state);
97249 #endif
97250
97251- v = kmalloc(stat_items_size, GFP_KERNEL);
97252+ v = kzalloc(stat_items_size, GFP_KERNEL);
97253 m->private = v;
97254 if (!v)
97255 return ERR_PTR(-ENOMEM);
97256+
97257+#ifdef CONFIG_GRKERNSEC_PROC_ADD
97258+#if defined(CONFIG_GRKERNSEC_PROC_USER) || defined(CONFIG_GRKERNSEC_PROC_USERGROUP)
97259+ if (!uid_eq(current_uid(), GLOBAL_ROOT_UID)
97260+#ifdef CONFIG_GRKERNSEC_PROC_USERGROUP
97261+ && !in_group_p(grsec_proc_gid)
97262+#endif
97263+ )
97264+ return (unsigned long *)m->private + *pos;
97265+#endif
97266+#endif
97267+
97268 for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
97269 v[i] = global_page_state(i);
97270 v += NR_VM_ZONE_STAT_ITEMS;
97271@@ -1308,10 +1321,16 @@ static int __init setup_vmstat(void)
97272 cpu_notifier_register_done();
97273 #endif
97274 #ifdef CONFIG_PROC_FS
97275- proc_create("buddyinfo", S_IRUGO, NULL, &fragmentation_file_operations);
97276- proc_create("pagetypeinfo", S_IRUGO, NULL, &pagetypeinfo_file_ops);
97277- proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
97278- proc_create("zoneinfo", S_IRUGO, NULL, &proc_zoneinfo_file_operations);
97279+ {
97280+ mode_t gr_mode = S_IRUGO;
97281+#ifdef CONFIG_GRKERNSEC_PROC_ADD
97282+ gr_mode = S_IRUSR;
97283+#endif
97284+ proc_create("buddyinfo", gr_mode, NULL, &fragmentation_file_operations);
97285+ proc_create("pagetypeinfo", gr_mode, NULL, &pagetypeinfo_file_ops);
97286+ proc_create("vmstat", S_IRUGO, NULL, &proc_vmstat_file_operations);
97287+ proc_create("zoneinfo", gr_mode, NULL, &proc_zoneinfo_file_operations);
97288+ }
97289 #endif
97290 return 0;
97291 }
97292diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
97293index 44ebd5c..1f732bae 100644
97294--- a/net/8021q/vlan.c
97295+++ b/net/8021q/vlan.c
97296@@ -475,7 +475,7 @@ out:
97297 return NOTIFY_DONE;
97298 }
97299
97300-static struct notifier_block vlan_notifier_block __read_mostly = {
97301+static struct notifier_block vlan_notifier_block = {
97302 .notifier_call = vlan_device_event,
97303 };
97304
97305@@ -550,8 +550,7 @@ static int vlan_ioctl_handler(struct net *net, void __user *arg)
97306 err = -EPERM;
97307 if (!ns_capable(net->user_ns, CAP_NET_ADMIN))
97308 break;
97309- if ((args.u.name_type >= 0) &&
97310- (args.u.name_type < VLAN_NAME_TYPE_HIGHEST)) {
97311+ if (args.u.name_type < VLAN_NAME_TYPE_HIGHEST) {
97312 struct vlan_net *vn;
97313
97314 vn = net_generic(net, vlan_net_id);
97315diff --git a/net/9p/client.c b/net/9p/client.c
97316index 0004cba..feba240 100644
97317--- a/net/9p/client.c
97318+++ b/net/9p/client.c
97319@@ -596,7 +596,7 @@ static int p9_check_zc_errors(struct p9_client *c, struct p9_req_t *req,
97320 len - inline_len);
97321 } else {
97322 err = copy_from_user(ename + inline_len,
97323- uidata, len - inline_len);
97324+ (char __force_user *)uidata, len - inline_len);
97325 if (err) {
97326 err = -EFAULT;
97327 goto out_err;
97328@@ -1571,7 +1571,7 @@ p9_client_read(struct p9_fid *fid, char *data, char __user *udata, u64 offset,
97329 kernel_buf = 1;
97330 indata = data;
97331 } else
97332- indata = (__force char *)udata;
97333+ indata = (__force_kernel char *)udata;
97334 /*
97335 * response header len is 11
97336 * PDU Header(7) + IO Size (4)
97337@@ -1646,7 +1646,7 @@ p9_client_write(struct p9_fid *fid, char *data, const char __user *udata,
97338 kernel_buf = 1;
97339 odata = data;
97340 } else
97341- odata = (char *)udata;
97342+ odata = (char __force_kernel *)udata;
97343 req = p9_client_zc_rpc(clnt, P9_TWRITE, NULL, odata, 0, rsize,
97344 P9_ZC_HDR_SZ, kernel_buf, "dqd",
97345 fid->fid, offset, rsize);
97346diff --git a/net/9p/mod.c b/net/9p/mod.c
97347index 6ab36ae..6f1841b 100644
97348--- a/net/9p/mod.c
97349+++ b/net/9p/mod.c
97350@@ -84,7 +84,7 @@ static LIST_HEAD(v9fs_trans_list);
97351 void v9fs_register_trans(struct p9_trans_module *m)
97352 {
97353 spin_lock(&v9fs_trans_lock);
97354- list_add_tail(&m->list, &v9fs_trans_list);
97355+ pax_list_add_tail((struct list_head *)&m->list, &v9fs_trans_list);
97356 spin_unlock(&v9fs_trans_lock);
97357 }
97358 EXPORT_SYMBOL(v9fs_register_trans);
97359@@ -97,7 +97,7 @@ EXPORT_SYMBOL(v9fs_register_trans);
97360 void v9fs_unregister_trans(struct p9_trans_module *m)
97361 {
97362 spin_lock(&v9fs_trans_lock);
97363- list_del_init(&m->list);
97364+ pax_list_del_init((struct list_head *)&m->list);
97365 spin_unlock(&v9fs_trans_lock);
97366 }
97367 EXPORT_SYMBOL(v9fs_unregister_trans);
97368diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
97369index 80d08f6..de63fd1 100644
97370--- a/net/9p/trans_fd.c
97371+++ b/net/9p/trans_fd.c
97372@@ -428,7 +428,7 @@ static int p9_fd_write(struct p9_client *client, void *v, int len)
97373 oldfs = get_fs();
97374 set_fs(get_ds());
97375 /* The cast to a user pointer is valid due to the set_fs() */
97376- ret = vfs_write(ts->wr, (__force void __user *)v, len, &ts->wr->f_pos);
97377+ ret = vfs_write(ts->wr, (void __force_user *)v, len, &ts->wr->f_pos);
97378 set_fs(oldfs);
97379
97380 if (ret <= 0 && ret != -ERESTARTSYS && ret != -EAGAIN)
97381diff --git a/net/appletalk/atalk_proc.c b/net/appletalk/atalk_proc.c
97382index af46bc4..f9adfcd 100644
97383--- a/net/appletalk/atalk_proc.c
97384+++ b/net/appletalk/atalk_proc.c
97385@@ -256,7 +256,7 @@ int __init atalk_proc_init(void)
97386 struct proc_dir_entry *p;
97387 int rc = -ENOMEM;
97388
97389- atalk_proc_dir = proc_mkdir("atalk", init_net.proc_net);
97390+ atalk_proc_dir = proc_mkdir_restrict("atalk", init_net.proc_net);
97391 if (!atalk_proc_dir)
97392 goto out;
97393
97394diff --git a/net/atm/atm_misc.c b/net/atm/atm_misc.c
97395index 876fbe8..8bbea9f 100644
97396--- a/net/atm/atm_misc.c
97397+++ b/net/atm/atm_misc.c
97398@@ -17,7 +17,7 @@ int atm_charge(struct atm_vcc *vcc, int truesize)
97399 if (atomic_read(&sk_atm(vcc)->sk_rmem_alloc) <= sk_atm(vcc)->sk_rcvbuf)
97400 return 1;
97401 atm_return(vcc, truesize);
97402- atomic_inc(&vcc->stats->rx_drop);
97403+ atomic_inc_unchecked(&vcc->stats->rx_drop);
97404 return 0;
97405 }
97406 EXPORT_SYMBOL(atm_charge);
97407@@ -39,7 +39,7 @@ struct sk_buff *atm_alloc_charge(struct atm_vcc *vcc, int pdu_size,
97408 }
97409 }
97410 atm_return(vcc, guess);
97411- atomic_inc(&vcc->stats->rx_drop);
97412+ atomic_inc_unchecked(&vcc->stats->rx_drop);
97413 return NULL;
97414 }
97415 EXPORT_SYMBOL(atm_alloc_charge);
97416@@ -86,7 +86,7 @@ EXPORT_SYMBOL(atm_pcr_goal);
97417
97418 void sonet_copy_stats(struct k_sonet_stats *from, struct sonet_stats *to)
97419 {
97420-#define __HANDLE_ITEM(i) to->i = atomic_read(&from->i)
97421+#define __HANDLE_ITEM(i) to->i = atomic_read_unchecked(&from->i)
97422 __SONET_ITEMS
97423 #undef __HANDLE_ITEM
97424 }
97425@@ -94,7 +94,7 @@ EXPORT_SYMBOL(sonet_copy_stats);
97426
97427 void sonet_subtract_stats(struct k_sonet_stats *from, struct sonet_stats *to)
97428 {
97429-#define __HANDLE_ITEM(i) atomic_sub(to->i, &from->i)
97430+#define __HANDLE_ITEM(i) atomic_sub_unchecked(to->i,&from->i)
97431 __SONET_ITEMS
97432 #undef __HANDLE_ITEM
97433 }
97434diff --git a/net/atm/lec.c b/net/atm/lec.c
97435index 4c5b8ba..95f7005 100644
97436--- a/net/atm/lec.c
97437+++ b/net/atm/lec.c
97438@@ -111,9 +111,9 @@ static inline void lec_arp_put(struct lec_arp_table *entry)
97439 }
97440
97441 static struct lane2_ops lane2_ops = {
97442- lane2_resolve, /* resolve, spec 3.1.3 */
97443- lane2_associate_req, /* associate_req, spec 3.1.4 */
97444- NULL /* associate indicator, spec 3.1.5 */
97445+ .resolve = lane2_resolve,
97446+ .associate_req = lane2_associate_req,
97447+ .associate_indicator = NULL
97448 };
97449
97450 static unsigned char bus_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
97451diff --git a/net/atm/lec.h b/net/atm/lec.h
97452index 4149db1..f2ab682 100644
97453--- a/net/atm/lec.h
97454+++ b/net/atm/lec.h
97455@@ -48,7 +48,7 @@ struct lane2_ops {
97456 const u8 *tlvs, u32 sizeoftlvs);
97457 void (*associate_indicator) (struct net_device *dev, const u8 *mac_addr,
97458 const u8 *tlvs, u32 sizeoftlvs);
97459-};
97460+} __no_const;
97461
97462 /*
97463 * ATM LAN Emulation supports both LLC & Dix Ethernet EtherType
97464diff --git a/net/atm/mpoa_caches.c b/net/atm/mpoa_caches.c
97465index d1b2d9a..d549f7f 100644
97466--- a/net/atm/mpoa_caches.c
97467+++ b/net/atm/mpoa_caches.c
97468@@ -535,30 +535,30 @@ static void eg_destroy_cache(struct mpoa_client *mpc)
97469
97470
97471 static struct in_cache_ops ingress_ops = {
97472- in_cache_add_entry, /* add_entry */
97473- in_cache_get, /* get */
97474- in_cache_get_with_mask, /* get_with_mask */
97475- in_cache_get_by_vcc, /* get_by_vcc */
97476- in_cache_put, /* put */
97477- in_cache_remove_entry, /* remove_entry */
97478- cache_hit, /* cache_hit */
97479- clear_count_and_expired, /* clear_count */
97480- check_resolving_entries, /* check_resolving */
97481- refresh_entries, /* refresh */
97482- in_destroy_cache /* destroy_cache */
97483+ .add_entry = in_cache_add_entry,
97484+ .get = in_cache_get,
97485+ .get_with_mask = in_cache_get_with_mask,
97486+ .get_by_vcc = in_cache_get_by_vcc,
97487+ .put = in_cache_put,
97488+ .remove_entry = in_cache_remove_entry,
97489+ .cache_hit = cache_hit,
97490+ .clear_count = clear_count_and_expired,
97491+ .check_resolving = check_resolving_entries,
97492+ .refresh = refresh_entries,
97493+ .destroy_cache = in_destroy_cache
97494 };
97495
97496 static struct eg_cache_ops egress_ops = {
97497- eg_cache_add_entry, /* add_entry */
97498- eg_cache_get_by_cache_id, /* get_by_cache_id */
97499- eg_cache_get_by_tag, /* get_by_tag */
97500- eg_cache_get_by_vcc, /* get_by_vcc */
97501- eg_cache_get_by_src_ip, /* get_by_src_ip */
97502- eg_cache_put, /* put */
97503- eg_cache_remove_entry, /* remove_entry */
97504- update_eg_cache_entry, /* update */
97505- clear_expired, /* clear_expired */
97506- eg_destroy_cache /* destroy_cache */
97507+ .add_entry = eg_cache_add_entry,
97508+ .get_by_cache_id = eg_cache_get_by_cache_id,
97509+ .get_by_tag = eg_cache_get_by_tag,
97510+ .get_by_vcc = eg_cache_get_by_vcc,
97511+ .get_by_src_ip = eg_cache_get_by_src_ip,
97512+ .put = eg_cache_put,
97513+ .remove_entry = eg_cache_remove_entry,
97514+ .update = update_eg_cache_entry,
97515+ .clear_expired = clear_expired,
97516+ .destroy_cache = eg_destroy_cache
97517 };
97518
97519
97520diff --git a/net/atm/proc.c b/net/atm/proc.c
97521index bbb6461..cf04016 100644
97522--- a/net/atm/proc.c
97523+++ b/net/atm/proc.c
97524@@ -45,9 +45,9 @@ static void add_stats(struct seq_file *seq, const char *aal,
97525 const struct k_atm_aal_stats *stats)
97526 {
97527 seq_printf(seq, "%s ( %d %d %d %d %d )", aal,
97528- atomic_read(&stats->tx), atomic_read(&stats->tx_err),
97529- atomic_read(&stats->rx), atomic_read(&stats->rx_err),
97530- atomic_read(&stats->rx_drop));
97531+ atomic_read_unchecked(&stats->tx),atomic_read_unchecked(&stats->tx_err),
97532+ atomic_read_unchecked(&stats->rx),atomic_read_unchecked(&stats->rx_err),
97533+ atomic_read_unchecked(&stats->rx_drop));
97534 }
97535
97536 static void atm_dev_info(struct seq_file *seq, const struct atm_dev *dev)
97537diff --git a/net/atm/resources.c b/net/atm/resources.c
97538index 0447d5d..3cf4728 100644
97539--- a/net/atm/resources.c
97540+++ b/net/atm/resources.c
97541@@ -160,7 +160,7 @@ EXPORT_SYMBOL(atm_dev_deregister);
97542 static void copy_aal_stats(struct k_atm_aal_stats *from,
97543 struct atm_aal_stats *to)
97544 {
97545-#define __HANDLE_ITEM(i) to->i = atomic_read(&from->i)
97546+#define __HANDLE_ITEM(i) to->i = atomic_read_unchecked(&from->i)
97547 __AAL_STAT_ITEMS
97548 #undef __HANDLE_ITEM
97549 }
97550@@ -168,7 +168,7 @@ static void copy_aal_stats(struct k_atm_aal_stats *from,
97551 static void subtract_aal_stats(struct k_atm_aal_stats *from,
97552 struct atm_aal_stats *to)
97553 {
97554-#define __HANDLE_ITEM(i) atomic_sub(to->i, &from->i)
97555+#define __HANDLE_ITEM(i) atomic_sub_unchecked(to->i, &from->i)
97556 __AAL_STAT_ITEMS
97557 #undef __HANDLE_ITEM
97558 }
97559diff --git a/net/ax25/sysctl_net_ax25.c b/net/ax25/sysctl_net_ax25.c
97560index 919a5ce..cc6b444 100644
97561--- a/net/ax25/sysctl_net_ax25.c
97562+++ b/net/ax25/sysctl_net_ax25.c
97563@@ -152,7 +152,7 @@ int ax25_register_dev_sysctl(ax25_dev *ax25_dev)
97564 {
97565 char path[sizeof("net/ax25/") + IFNAMSIZ];
97566 int k;
97567- struct ctl_table *table;
97568+ ctl_table_no_const *table;
97569
97570 table = kmemdup(ax25_param_table, sizeof(ax25_param_table), GFP_KERNEL);
97571 if (!table)
97572diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
97573index f04224c..f326579 100644
97574--- a/net/batman-adv/bat_iv_ogm.c
97575+++ b/net/batman-adv/bat_iv_ogm.c
97576@@ -312,7 +312,7 @@ static int batadv_iv_ogm_iface_enable(struct batadv_hard_iface *hard_iface)
97577
97578 /* randomize initial seqno to avoid collision */
97579 get_random_bytes(&random_seqno, sizeof(random_seqno));
97580- atomic_set(&hard_iface->bat_iv.ogm_seqno, random_seqno);
97581+ atomic_set_unchecked(&hard_iface->bat_iv.ogm_seqno, random_seqno);
97582
97583 hard_iface->bat_iv.ogm_buff_len = BATADV_OGM_HLEN;
97584 ogm_buff = kmalloc(hard_iface->bat_iv.ogm_buff_len, GFP_ATOMIC);
97585@@ -917,9 +917,9 @@ static void batadv_iv_ogm_schedule(struct batadv_hard_iface *hard_iface)
97586 batadv_ogm_packet->tvlv_len = htons(tvlv_len);
97587
97588 /* change sequence number to network order */
97589- seqno = (uint32_t)atomic_read(&hard_iface->bat_iv.ogm_seqno);
97590+ seqno = (uint32_t)atomic_read_unchecked(&hard_iface->bat_iv.ogm_seqno);
97591 batadv_ogm_packet->seqno = htonl(seqno);
97592- atomic_inc(&hard_iface->bat_iv.ogm_seqno);
97593+ atomic_inc_unchecked(&hard_iface->bat_iv.ogm_seqno);
97594
97595 batadv_iv_ogm_slide_own_bcast_window(hard_iface);
97596
97597@@ -1596,7 +1596,7 @@ static void batadv_iv_ogm_process(const struct sk_buff *skb, int ogm_offset,
97598 return;
97599
97600 /* could be changed by schedule_own_packet() */
97601- if_incoming_seqno = atomic_read(&if_incoming->bat_iv.ogm_seqno);
97602+ if_incoming_seqno = atomic_read_unchecked(&if_incoming->bat_iv.ogm_seqno);
97603
97604 if (ogm_packet->flags & BATADV_DIRECTLINK)
97605 has_directlink_flag = true;
97606diff --git a/net/batman-adv/fragmentation.c b/net/batman-adv/fragmentation.c
97607index f14e54a..66f3e2e 100644
97608--- a/net/batman-adv/fragmentation.c
97609+++ b/net/batman-adv/fragmentation.c
97610@@ -446,7 +446,7 @@ bool batadv_frag_send_packet(struct sk_buff *skb,
97611 frag_header.packet_type = BATADV_UNICAST_FRAG;
97612 frag_header.version = BATADV_COMPAT_VERSION;
97613 frag_header.ttl = BATADV_TTL;
97614- frag_header.seqno = htons(atomic_inc_return(&bat_priv->frag_seqno));
97615+ frag_header.seqno = htons(atomic_inc_return_unchecked(&bat_priv->frag_seqno));
97616 frag_header.reserved = 0;
97617 frag_header.no = 0;
97618 frag_header.total_size = htons(skb->len);
97619diff --git a/net/batman-adv/soft-interface.c b/net/batman-adv/soft-interface.c
97620index 744a59b..8fd037c 100644
97621--- a/net/batman-adv/soft-interface.c
97622+++ b/net/batman-adv/soft-interface.c
97623@@ -296,7 +296,7 @@ send:
97624 primary_if->net_dev->dev_addr);
97625
97626 /* set broadcast sequence number */
97627- seqno = atomic_inc_return(&bat_priv->bcast_seqno);
97628+ seqno = atomic_inc_return_unchecked(&bat_priv->bcast_seqno);
97629 bcast_packet->seqno = htonl(seqno);
97630
97631 batadv_add_bcast_packet_to_list(bat_priv, skb, brd_delay);
97632@@ -729,7 +729,7 @@ static int batadv_softif_init_late(struct net_device *dev)
97633 atomic_set(&bat_priv->batman_queue_left, BATADV_BATMAN_QUEUE_LEN);
97634
97635 atomic_set(&bat_priv->mesh_state, BATADV_MESH_INACTIVE);
97636- atomic_set(&bat_priv->bcast_seqno, 1);
97637+ atomic_set_unchecked(&bat_priv->bcast_seqno, 1);
97638 atomic_set(&bat_priv->tt.vn, 0);
97639 atomic_set(&bat_priv->tt.local_changes, 0);
97640 atomic_set(&bat_priv->tt.ogm_append_cnt, 0);
97641@@ -743,7 +743,7 @@ static int batadv_softif_init_late(struct net_device *dev)
97642
97643 /* randomize initial seqno to avoid collision */
97644 get_random_bytes(&random_seqno, sizeof(random_seqno));
97645- atomic_set(&bat_priv->frag_seqno, random_seqno);
97646+ atomic_set_unchecked(&bat_priv->frag_seqno, random_seqno);
97647
97648 bat_priv->primary_if = NULL;
97649 bat_priv->num_ifaces = 0;
97650diff --git a/net/batman-adv/types.h b/net/batman-adv/types.h
97651index 34891a5..3cfece0 100644
97652--- a/net/batman-adv/types.h
97653+++ b/net/batman-adv/types.h
97654@@ -67,7 +67,7 @@ enum batadv_dhcp_recipient {
97655 struct batadv_hard_iface_bat_iv {
97656 unsigned char *ogm_buff;
97657 int ogm_buff_len;
97658- atomic_t ogm_seqno;
97659+ atomic_unchecked_t ogm_seqno;
97660 };
97661
97662 /**
97663@@ -766,7 +766,7 @@ struct batadv_priv {
97664 atomic_t bonding;
97665 atomic_t fragmentation;
97666 atomic_t packet_size_max;
97667- atomic_t frag_seqno;
97668+ atomic_unchecked_t frag_seqno;
97669 #ifdef CONFIG_BATMAN_ADV_BLA
97670 atomic_t bridge_loop_avoidance;
97671 #endif
97672@@ -785,7 +785,7 @@ struct batadv_priv {
97673 #endif
97674 uint32_t isolation_mark;
97675 uint32_t isolation_mark_mask;
97676- atomic_t bcast_seqno;
97677+ atomic_unchecked_t bcast_seqno;
97678 atomic_t bcast_queue_left;
97679 atomic_t batman_queue_left;
97680 char num_ifaces;
97681diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
97682index b9a418e..2af862a 100644
97683--- a/net/bluetooth/hci_sock.c
97684+++ b/net/bluetooth/hci_sock.c
97685@@ -1053,7 +1053,7 @@ static int hci_sock_setsockopt(struct socket *sock, int level, int optname,
97686 uf.event_mask[1] = *((u32 *) f->event_mask + 1);
97687 }
97688
97689- len = min_t(unsigned int, len, sizeof(uf));
97690+ len = min((size_t)len, sizeof(uf));
97691 if (copy_from_user(&uf, optval, len)) {
97692 err = -EFAULT;
97693 break;
97694diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
97695index dc4d301..4975bac 100644
97696--- a/net/bluetooth/l2cap_core.c
97697+++ b/net/bluetooth/l2cap_core.c
97698@@ -3536,8 +3536,10 @@ static int l2cap_parse_conf_rsp(struct l2cap_chan *chan, void *rsp, int len,
97699 break;
97700
97701 case L2CAP_CONF_RFC:
97702- if (olen == sizeof(rfc))
97703- memcpy(&rfc, (void *)val, olen);
97704+ if (olen != sizeof(rfc))
97705+ break;
97706+
97707+ memcpy(&rfc, (void *)val, olen);
97708
97709 if (test_bit(CONF_STATE2_DEVICE, &chan->conf_state) &&
97710 rfc.mode != chan->mode)
97711diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
97712index ade3fb4..df37cb4 100644
97713--- a/net/bluetooth/l2cap_sock.c
97714+++ b/net/bluetooth/l2cap_sock.c
97715@@ -628,7 +628,8 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname,
97716 struct sock *sk = sock->sk;
97717 struct l2cap_chan *chan = l2cap_pi(sk)->chan;
97718 struct l2cap_options opts;
97719- int len, err = 0;
97720+ int err = 0;
97721+ size_t len = optlen;
97722 u32 opt;
97723
97724 BT_DBG("sk %p", sk);
97725@@ -655,7 +656,7 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname,
97726 opts.max_tx = chan->max_tx;
97727 opts.txwin_size = chan->tx_win;
97728
97729- len = min_t(unsigned int, sizeof(opts), optlen);
97730+ len = min(sizeof(opts), len);
97731 if (copy_from_user((char *) &opts, optval, len)) {
97732 err = -EFAULT;
97733 break;
97734@@ -742,7 +743,8 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
97735 struct bt_security sec;
97736 struct bt_power pwr;
97737 struct l2cap_conn *conn;
97738- int len, err = 0;
97739+ int err = 0;
97740+ size_t len = optlen;
97741 u32 opt;
97742
97743 BT_DBG("sk %p", sk);
97744@@ -766,7 +768,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
97745
97746 sec.level = BT_SECURITY_LOW;
97747
97748- len = min_t(unsigned int, sizeof(sec), optlen);
97749+ len = min(sizeof(sec), len);
97750 if (copy_from_user((char *) &sec, optval, len)) {
97751 err = -EFAULT;
97752 break;
97753@@ -866,7 +868,7 @@ static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname,
97754
97755 pwr.force_active = BT_POWER_FORCE_ACTIVE_ON;
97756
97757- len = min_t(unsigned int, sizeof(pwr), optlen);
97758+ len = min(sizeof(pwr), len);
97759 if (copy_from_user((char *) &pwr, optval, len)) {
97760 err = -EFAULT;
97761 break;
97762diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
97763index c603a5e..7f08991 100644
97764--- a/net/bluetooth/rfcomm/sock.c
97765+++ b/net/bluetooth/rfcomm/sock.c
97766@@ -687,7 +687,7 @@ static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, c
97767 struct sock *sk = sock->sk;
97768 struct bt_security sec;
97769 int err = 0;
97770- size_t len;
97771+ size_t len = optlen;
97772 u32 opt;
97773
97774 BT_DBG("sk %p", sk);
97775@@ -709,7 +709,7 @@ static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, c
97776
97777 sec.level = BT_SECURITY_LOW;
97778
97779- len = min_t(unsigned int, sizeof(sec), optlen);
97780+ len = min(sizeof(sec), len);
97781 if (copy_from_user((char *) &sec, optval, len)) {
97782 err = -EFAULT;
97783 break;
97784diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
97785index 403ec09..a21a003 100644
97786--- a/net/bluetooth/rfcomm/tty.c
97787+++ b/net/bluetooth/rfcomm/tty.c
97788@@ -752,7 +752,7 @@ static int rfcomm_tty_open(struct tty_struct *tty, struct file *filp)
97789 BT_DBG("tty %p id %d", tty, tty->index);
97790
97791 BT_DBG("dev %p dst %pMR channel %d opened %d", dev, &dev->dst,
97792- dev->channel, dev->port.count);
97793+ dev->channel, atomic_read(&dev->port.count));
97794
97795 err = tty_port_open(&dev->port, tty, filp);
97796 if (err)
97797@@ -775,7 +775,7 @@ static void rfcomm_tty_close(struct tty_struct *tty, struct file *filp)
97798 struct rfcomm_dev *dev = (struct rfcomm_dev *) tty->driver_data;
97799
97800 BT_DBG("tty %p dev %p dlc %p opened %d", tty, dev, dev->dlc,
97801- dev->port.count);
97802+ atomic_read(&dev->port.count));
97803
97804 tty_port_close(&dev->port, tty, filp);
97805 }
97806diff --git a/net/bridge/netfilter/ebtables.c b/net/bridge/netfilter/ebtables.c
97807index 1059ed3..d70846a 100644
97808--- a/net/bridge/netfilter/ebtables.c
97809+++ b/net/bridge/netfilter/ebtables.c
97810@@ -1524,7 +1524,7 @@ static int do_ebt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
97811 tmp.valid_hooks = t->table->valid_hooks;
97812 }
97813 mutex_unlock(&ebt_mutex);
97814- if (copy_to_user(user, &tmp, *len) != 0) {
97815+ if (*len > sizeof(tmp) || copy_to_user(user, &tmp, *len) != 0) {
97816 BUGPRINT("c2u Didn't work\n");
97817 ret = -EFAULT;
97818 break;
97819@@ -2330,7 +2330,7 @@ static int compat_do_ebt_get_ctl(struct sock *sk, int cmd,
97820 goto out;
97821 tmp.valid_hooks = t->valid_hooks;
97822
97823- if (copy_to_user(user, &tmp, *len) != 0) {
97824+ if (*len > sizeof(tmp) || copy_to_user(user, &tmp, *len) != 0) {
97825 ret = -EFAULT;
97826 break;
97827 }
97828@@ -2341,7 +2341,7 @@ static int compat_do_ebt_get_ctl(struct sock *sk, int cmd,
97829 tmp.entries_size = t->table->entries_size;
97830 tmp.valid_hooks = t->table->valid_hooks;
97831
97832- if (copy_to_user(user, &tmp, *len) != 0) {
97833+ if (*len > sizeof(tmp) || copy_to_user(user, &tmp, *len) != 0) {
97834 ret = -EFAULT;
97835 break;
97836 }
97837diff --git a/net/caif/cfctrl.c b/net/caif/cfctrl.c
97838index 0f45522..dab651f 100644
97839--- a/net/caif/cfctrl.c
97840+++ b/net/caif/cfctrl.c
97841@@ -10,6 +10,7 @@
97842 #include <linux/spinlock.h>
97843 #include <linux/slab.h>
97844 #include <linux/pkt_sched.h>
97845+#include <linux/sched.h>
97846 #include <net/caif/caif_layer.h>
97847 #include <net/caif/cfpkt.h>
97848 #include <net/caif/cfctrl.h>
97849@@ -43,8 +44,8 @@ struct cflayer *cfctrl_create(void)
97850 memset(&dev_info, 0, sizeof(dev_info));
97851 dev_info.id = 0xff;
97852 cfsrvl_init(&this->serv, 0, &dev_info, false);
97853- atomic_set(&this->req_seq_no, 1);
97854- atomic_set(&this->rsp_seq_no, 1);
97855+ atomic_set_unchecked(&this->req_seq_no, 1);
97856+ atomic_set_unchecked(&this->rsp_seq_no, 1);
97857 this->serv.layer.receive = cfctrl_recv;
97858 sprintf(this->serv.layer.name, "ctrl");
97859 this->serv.layer.ctrlcmd = cfctrl_ctrlcmd;
97860@@ -130,8 +131,8 @@ static void cfctrl_insert_req(struct cfctrl *ctrl,
97861 struct cfctrl_request_info *req)
97862 {
97863 spin_lock_bh(&ctrl->info_list_lock);
97864- atomic_inc(&ctrl->req_seq_no);
97865- req->sequence_no = atomic_read(&ctrl->req_seq_no);
97866+ atomic_inc_unchecked(&ctrl->req_seq_no);
97867+ req->sequence_no = atomic_read_unchecked(&ctrl->req_seq_no);
97868 list_add_tail(&req->list, &ctrl->list);
97869 spin_unlock_bh(&ctrl->info_list_lock);
97870 }
97871@@ -149,7 +150,7 @@ static struct cfctrl_request_info *cfctrl_remove_req(struct cfctrl *ctrl,
97872 if (p != first)
97873 pr_warn("Requests are not received in order\n");
97874
97875- atomic_set(&ctrl->rsp_seq_no,
97876+ atomic_set_unchecked(&ctrl->rsp_seq_no,
97877 p->sequence_no);
97878 list_del(&p->list);
97879 goto out;
97880diff --git a/net/can/af_can.c b/net/can/af_can.c
97881index a27f8aa..67174a3 100644
97882--- a/net/can/af_can.c
97883+++ b/net/can/af_can.c
97884@@ -863,7 +863,7 @@ static const struct net_proto_family can_family_ops = {
97885 };
97886
97887 /* notifier block for netdevice event */
97888-static struct notifier_block can_netdev_notifier __read_mostly = {
97889+static struct notifier_block can_netdev_notifier = {
97890 .notifier_call = can_notifier,
97891 };
97892
97893diff --git a/net/can/bcm.c b/net/can/bcm.c
97894index dcb75c0..24b1b43 100644
97895--- a/net/can/bcm.c
97896+++ b/net/can/bcm.c
97897@@ -1624,7 +1624,7 @@ static int __init bcm_module_init(void)
97898 }
97899
97900 /* create /proc/net/can-bcm directory */
97901- proc_dir = proc_mkdir("can-bcm", init_net.proc_net);
97902+ proc_dir = proc_mkdir_restrict("can-bcm", init_net.proc_net);
97903 return 0;
97904 }
97905
97906diff --git a/net/can/gw.c b/net/can/gw.c
97907index 050a211..bb9fe33 100644
97908--- a/net/can/gw.c
97909+++ b/net/can/gw.c
97910@@ -80,7 +80,6 @@ MODULE_PARM_DESC(max_hops,
97911 "default: " __stringify(CGW_DEFAULT_HOPS) ")");
97912
97913 static HLIST_HEAD(cgw_list);
97914-static struct notifier_block notifier;
97915
97916 static struct kmem_cache *cgw_cache __read_mostly;
97917
97918@@ -947,6 +946,10 @@ static int cgw_remove_job(struct sk_buff *skb, struct nlmsghdr *nlh)
97919 return err;
97920 }
97921
97922+static struct notifier_block notifier = {
97923+ .notifier_call = cgw_notifier
97924+};
97925+
97926 static __init int cgw_module_init(void)
97927 {
97928 /* sanitize given module parameter */
97929@@ -962,7 +965,6 @@ static __init int cgw_module_init(void)
97930 return -ENOMEM;
97931
97932 /* set notifier */
97933- notifier.notifier_call = cgw_notifier;
97934 register_netdevice_notifier(&notifier);
97935
97936 if (__rtnl_register(PF_CAN, RTM_GETROUTE, NULL, cgw_dump_jobs, NULL)) {
97937diff --git a/net/can/proc.c b/net/can/proc.c
97938index b543470..d2ddae2 100644
97939--- a/net/can/proc.c
97940+++ b/net/can/proc.c
97941@@ -468,7 +468,7 @@ static void can_remove_proc_readentry(const char *name)
97942 void can_init_proc(void)
97943 {
97944 /* create /proc/net/can directory */
97945- can_dir = proc_mkdir("can", init_net.proc_net);
97946+ can_dir = proc_mkdir_restrict("can", init_net.proc_net);
97947
97948 if (!can_dir) {
97949 printk(KERN_INFO "can: failed to create /proc/net/can . "
97950diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
97951index 1948d59..9e854d5 100644
97952--- a/net/ceph/messenger.c
97953+++ b/net/ceph/messenger.c
97954@@ -187,7 +187,7 @@ static void con_fault(struct ceph_connection *con);
97955 #define MAX_ADDR_STR_LEN 64 /* 54 is enough */
97956
97957 static char addr_str[ADDR_STR_COUNT][MAX_ADDR_STR_LEN];
97958-static atomic_t addr_str_seq = ATOMIC_INIT(0);
97959+static atomic_unchecked_t addr_str_seq = ATOMIC_INIT(0);
97960
97961 static struct page *zero_page; /* used in certain error cases */
97962
97963@@ -198,7 +198,7 @@ const char *ceph_pr_addr(const struct sockaddr_storage *ss)
97964 struct sockaddr_in *in4 = (struct sockaddr_in *) ss;
97965 struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) ss;
97966
97967- i = atomic_inc_return(&addr_str_seq) & ADDR_STR_COUNT_MASK;
97968+ i = atomic_inc_return_unchecked(&addr_str_seq) & ADDR_STR_COUNT_MASK;
97969 s = addr_str[i];
97970
97971 switch (ss->ss_family) {
97972diff --git a/net/compat.c b/net/compat.c
97973index 9a76eaf..5b8ccfd 100644
97974--- a/net/compat.c
97975+++ b/net/compat.c
97976@@ -73,9 +73,9 @@ int get_compat_msghdr(struct msghdr *kmsg, struct compat_msghdr __user *umsg)
97977 return -EFAULT;
97978 if (kmsg->msg_namelen > sizeof(struct sockaddr_storage))
97979 kmsg->msg_namelen = sizeof(struct sockaddr_storage);
97980- kmsg->msg_name = compat_ptr(tmp1);
97981- kmsg->msg_iov = compat_ptr(tmp2);
97982- kmsg->msg_control = compat_ptr(tmp3);
97983+ kmsg->msg_name = (void __force_kernel *)compat_ptr(tmp1);
97984+ kmsg->msg_iov = (void __force_kernel *)compat_ptr(tmp2);
97985+ kmsg->msg_control = (void __force_kernel *)compat_ptr(tmp3);
97986 return 0;
97987 }
97988
97989@@ -87,7 +87,7 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
97990
97991 if (kern_msg->msg_namelen) {
97992 if (mode == VERIFY_READ) {
97993- int err = move_addr_to_kernel(kern_msg->msg_name,
97994+ int err = move_addr_to_kernel((void __force_user *)kern_msg->msg_name,
97995 kern_msg->msg_namelen,
97996 kern_address);
97997 if (err < 0)
97998@@ -99,7 +99,7 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
97999 kern_msg->msg_name = NULL;
98000
98001 tot_len = iov_from_user_compat_to_kern(kern_iov,
98002- (struct compat_iovec __user *)kern_msg->msg_iov,
98003+ (struct compat_iovec __force_user *)kern_msg->msg_iov,
98004 kern_msg->msg_iovlen);
98005 if (tot_len >= 0)
98006 kern_msg->msg_iov = kern_iov;
98007@@ -119,20 +119,20 @@ int verify_compat_iovec(struct msghdr *kern_msg, struct iovec *kern_iov,
98008
98009 #define CMSG_COMPAT_FIRSTHDR(msg) \
98010 (((msg)->msg_controllen) >= sizeof(struct compat_cmsghdr) ? \
98011- (struct compat_cmsghdr __user *)((msg)->msg_control) : \
98012+ (struct compat_cmsghdr __force_user *)((msg)->msg_control) : \
98013 (struct compat_cmsghdr __user *)NULL)
98014
98015 #define CMSG_COMPAT_OK(ucmlen, ucmsg, mhdr) \
98016 ((ucmlen) >= sizeof(struct compat_cmsghdr) && \
98017 (ucmlen) <= (unsigned long) \
98018 ((mhdr)->msg_controllen - \
98019- ((char *)(ucmsg) - (char *)(mhdr)->msg_control)))
98020+ ((char __force_kernel *)(ucmsg) - (char *)(mhdr)->msg_control)))
98021
98022 static inline struct compat_cmsghdr __user *cmsg_compat_nxthdr(struct msghdr *msg,
98023 struct compat_cmsghdr __user *cmsg, int cmsg_len)
98024 {
98025 char __user *ptr = (char __user *)cmsg + CMSG_COMPAT_ALIGN(cmsg_len);
98026- if ((unsigned long)(ptr + 1 - (char __user *)msg->msg_control) >
98027+ if ((unsigned long)(ptr + 1 - (char __force_user *)msg->msg_control) >
98028 msg->msg_controllen)
98029 return NULL;
98030 return (struct compat_cmsghdr __user *)ptr;
98031@@ -222,7 +222,7 @@ Efault:
98032
98033 int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *data)
98034 {
98035- struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
98036+ struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __force_user *) kmsg->msg_control;
98037 struct compat_cmsghdr cmhdr;
98038 struct compat_timeval ctv;
98039 struct compat_timespec cts[3];
98040@@ -278,7 +278,7 @@ int put_cmsg_compat(struct msghdr *kmsg, int level, int type, int len, void *dat
98041
98042 void scm_detach_fds_compat(struct msghdr *kmsg, struct scm_cookie *scm)
98043 {
98044- struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __user *) kmsg->msg_control;
98045+ struct compat_cmsghdr __user *cm = (struct compat_cmsghdr __force_user *) kmsg->msg_control;
98046 int fdmax = (kmsg->msg_controllen - sizeof(struct compat_cmsghdr)) / sizeof(int);
98047 int fdnum = scm->fp->count;
98048 struct file **fp = scm->fp->fp;
98049@@ -366,7 +366,7 @@ static int do_set_sock_timeout(struct socket *sock, int level,
98050 return -EFAULT;
98051 old_fs = get_fs();
98052 set_fs(KERNEL_DS);
98053- err = sock_setsockopt(sock, level, optname, (char *)&ktime, sizeof(ktime));
98054+ err = sock_setsockopt(sock, level, optname, (char __force_user *)&ktime, sizeof(ktime));
98055 set_fs(old_fs);
98056
98057 return err;
98058@@ -427,7 +427,7 @@ static int do_get_sock_timeout(struct socket *sock, int level, int optname,
98059 len = sizeof(ktime);
98060 old_fs = get_fs();
98061 set_fs(KERNEL_DS);
98062- err = sock_getsockopt(sock, level, optname, (char *) &ktime, &len);
98063+ err = sock_getsockopt(sock, level, optname, (char __force_user *) &ktime, (int __force_user *)&len);
98064 set_fs(old_fs);
98065
98066 if (!err) {
98067@@ -570,7 +570,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname,
98068 case MCAST_JOIN_GROUP:
98069 case MCAST_LEAVE_GROUP:
98070 {
98071- struct compat_group_req __user *gr32 = (void *)optval;
98072+ struct compat_group_req __user *gr32 = (void __user *)optval;
98073 struct group_req __user *kgr =
98074 compat_alloc_user_space(sizeof(struct group_req));
98075 u32 interface;
98076@@ -591,7 +591,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname,
98077 case MCAST_BLOCK_SOURCE:
98078 case MCAST_UNBLOCK_SOURCE:
98079 {
98080- struct compat_group_source_req __user *gsr32 = (void *)optval;
98081+ struct compat_group_source_req __user *gsr32 = (void __user *)optval;
98082 struct group_source_req __user *kgsr = compat_alloc_user_space(
98083 sizeof(struct group_source_req));
98084 u32 interface;
98085@@ -612,7 +612,7 @@ int compat_mc_setsockopt(struct sock *sock, int level, int optname,
98086 }
98087 case MCAST_MSFILTER:
98088 {
98089- struct compat_group_filter __user *gf32 = (void *)optval;
98090+ struct compat_group_filter __user *gf32 = (void __user *)optval;
98091 struct group_filter __user *kgf;
98092 u32 interface, fmode, numsrc;
98093
98094@@ -650,7 +650,7 @@ int compat_mc_getsockopt(struct sock *sock, int level, int optname,
98095 char __user *optval, int __user *optlen,
98096 int (*getsockopt)(struct sock *, int, int, char __user *, int __user *))
98097 {
98098- struct compat_group_filter __user *gf32 = (void *)optval;
98099+ struct compat_group_filter __user *gf32 = (void __user *)optval;
98100 struct group_filter __user *kgf;
98101 int __user *koptlen;
98102 u32 interface, fmode, numsrc;
98103@@ -803,7 +803,7 @@ COMPAT_SYSCALL_DEFINE2(socketcall, int, call, u32 __user *, args)
98104
98105 if (call < SYS_SOCKET || call > SYS_SENDMMSG)
98106 return -EINVAL;
98107- if (copy_from_user(a, args, nas[call]))
98108+ if (nas[call] > sizeof a || copy_from_user(a, args, nas[call]))
98109 return -EFAULT;
98110 a0 = a[0];
98111 a1 = a[1];
98112diff --git a/net/core/datagram.c b/net/core/datagram.c
98113index a16ed7b..eb44d17 100644
98114--- a/net/core/datagram.c
98115+++ b/net/core/datagram.c
98116@@ -301,7 +301,7 @@ int skb_kill_datagram(struct sock *sk, struct sk_buff *skb, unsigned int flags)
98117 }
98118
98119 kfree_skb(skb);
98120- atomic_inc(&sk->sk_drops);
98121+ atomic_inc_unchecked(&sk->sk_drops);
98122 sk_mem_reclaim_partial(sk);
98123
98124 return err;
98125diff --git a/net/core/dev.c b/net/core/dev.c
98126index a30bef1..51d3e33 100644
98127--- a/net/core/dev.c
98128+++ b/net/core/dev.c
98129@@ -1683,14 +1683,14 @@ int dev_forward_skb(struct net_device *dev, struct sk_buff *skb)
98130 {
98131 if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) {
98132 if (skb_copy_ubufs(skb, GFP_ATOMIC)) {
98133- atomic_long_inc(&dev->rx_dropped);
98134+ atomic_long_inc_unchecked(&dev->rx_dropped);
98135 kfree_skb(skb);
98136 return NET_RX_DROP;
98137 }
98138 }
98139
98140 if (unlikely(!is_skb_forwardable(dev, skb))) {
98141- atomic_long_inc(&dev->rx_dropped);
98142+ atomic_long_inc_unchecked(&dev->rx_dropped);
98143 kfree_skb(skb);
98144 return NET_RX_DROP;
98145 }
98146@@ -2463,7 +2463,7 @@ static int illegal_highdma(struct net_device *dev, struct sk_buff *skb)
98147
98148 struct dev_gso_cb {
98149 void (*destructor)(struct sk_buff *skb);
98150-};
98151+} __no_const;
98152
98153 #define DEV_GSO_CB(skb) ((struct dev_gso_cb *)(skb)->cb)
98154
98155@@ -2893,7 +2893,7 @@ recursion_alert:
98156 rc = -ENETDOWN;
98157 rcu_read_unlock_bh();
98158
98159- atomic_long_inc(&dev->tx_dropped);
98160+ atomic_long_inc_unchecked(&dev->tx_dropped);
98161 kfree_skb(skb);
98162 return rc;
98163 out:
98164@@ -3237,7 +3237,7 @@ enqueue:
98165
98166 local_irq_restore(flags);
98167
98168- atomic_long_inc(&skb->dev->rx_dropped);
98169+ atomic_long_inc_unchecked(&skb->dev->rx_dropped);
98170 kfree_skb(skb);
98171 return NET_RX_DROP;
98172 }
98173@@ -3314,7 +3314,7 @@ int netif_rx_ni(struct sk_buff *skb)
98174 }
98175 EXPORT_SYMBOL(netif_rx_ni);
98176
98177-static void net_tx_action(struct softirq_action *h)
98178+static __latent_entropy void net_tx_action(void)
98179 {
98180 struct softnet_data *sd = &__get_cpu_var(softnet_data);
98181
98182@@ -3647,7 +3647,7 @@ ncls:
98183 ret = pt_prev->func(skb, skb->dev, pt_prev, orig_dev);
98184 } else {
98185 drop:
98186- atomic_long_inc(&skb->dev->rx_dropped);
98187+ atomic_long_inc_unchecked(&skb->dev->rx_dropped);
98188 kfree_skb(skb);
98189 /* Jamal, now you will not able to escape explaining
98190 * me how you were going to use this. :-)
98191@@ -4366,7 +4366,7 @@ void netif_napi_del(struct napi_struct *napi)
98192 }
98193 EXPORT_SYMBOL(netif_napi_del);
98194
98195-static void net_rx_action(struct softirq_action *h)
98196+static __latent_entropy void net_rx_action(void)
98197 {
98198 struct softnet_data *sd = &__get_cpu_var(softnet_data);
98199 unsigned long time_limit = jiffies + 2;
98200@@ -6366,8 +6366,8 @@ struct rtnl_link_stats64 *dev_get_stats(struct net_device *dev,
98201 } else {
98202 netdev_stats_to_stats64(storage, &dev->stats);
98203 }
98204- storage->rx_dropped += atomic_long_read(&dev->rx_dropped);
98205- storage->tx_dropped += atomic_long_read(&dev->tx_dropped);
98206+ storage->rx_dropped += atomic_long_read_unchecked(&dev->rx_dropped);
98207+ storage->tx_dropped += atomic_long_read_unchecked(&dev->tx_dropped);
98208 return storage;
98209 }
98210 EXPORT_SYMBOL(dev_get_stats);
98211diff --git a/net/core/dev_ioctl.c b/net/core/dev_ioctl.c
98212index cf999e0..c59a975 100644
98213--- a/net/core/dev_ioctl.c
98214+++ b/net/core/dev_ioctl.c
98215@@ -366,9 +366,13 @@ void dev_load(struct net *net, const char *name)
98216 if (no_module && capable(CAP_NET_ADMIN))
98217 no_module = request_module("netdev-%s", name);
98218 if (no_module && capable(CAP_SYS_MODULE)) {
98219+#ifdef CONFIG_GRKERNSEC_MODHARDEN
98220+ ___request_module(true, "grsec_modharden_netdev", "%s", name);
98221+#else
98222 if (!request_module("%s", name))
98223 pr_warn("Loading kernel module for a network device with CAP_SYS_MODULE (deprecated). Use CAP_NET_ADMIN and alias netdev-%s instead.\n",
98224 name);
98225+#endif
98226 }
98227 }
98228 EXPORT_SYMBOL(dev_load);
98229diff --git a/net/core/dst.c b/net/core/dst.c
98230index 80d6286..a028409 100644
98231--- a/net/core/dst.c
98232+++ b/net/core/dst.c
98233@@ -269,6 +269,15 @@ again:
98234 }
98235 EXPORT_SYMBOL(dst_destroy);
98236
98237+static void dst_destroy_rcu(struct rcu_head *head)
98238+{
98239+ struct dst_entry *dst = container_of(head, struct dst_entry, rcu_head);
98240+
98241+ dst = dst_destroy(dst);
98242+ if (dst)
98243+ __dst_free(dst);
98244+}
98245+
98246 void dst_release(struct dst_entry *dst)
98247 {
98248 if (dst) {
98249@@ -276,11 +285,8 @@ void dst_release(struct dst_entry *dst)
98250
98251 newrefcnt = atomic_dec_return(&dst->__refcnt);
98252 WARN_ON(newrefcnt < 0);
98253- if (unlikely(dst->flags & DST_NOCACHE) && !newrefcnt) {
98254- dst = dst_destroy(dst);
98255- if (dst)
98256- __dst_free(dst);
98257- }
98258+ if (unlikely(dst->flags & DST_NOCACHE) && !newrefcnt)
98259+ call_rcu(&dst->rcu_head, dst_destroy_rcu);
98260 }
98261 }
98262 EXPORT_SYMBOL(dst_release);
98263diff --git a/net/core/filter.c b/net/core/filter.c
98264index 4aec7b9..5cf605c 100644
98265--- a/net/core/filter.c
98266+++ b/net/core/filter.c
98267@@ -1121,7 +1121,11 @@ do_pass:
98268 break;
98269
98270 default:
98271- goto err;
98272+ WARN(1, KERN_ALERT "Unknown sock filter code:%u jt:%u tf:%u k:%u\n",
98273+ fp->code, fp->jt, fp->jf, fp->k);
98274+ kfree(addrs);
98275+ BUG();
98276+ return -EINVAL;
98277 }
98278
98279 insn++;
98280@@ -1170,7 +1174,7 @@ static int check_load_and_stores(struct sock_filter *filter, int flen)
98281 u16 *masks, memvalid = 0; /* one bit per cell, 16 cells */
98282 int pc, ret = 0;
98283
98284- BUILD_BUG_ON(BPF_MEMWORDS > 16);
98285+ BUILD_BUG_ON(BPF_MEMWORDS != 16);
98286 masks = kmalloc(flen * sizeof(*masks), GFP_KERNEL);
98287 if (!masks)
98288 return -ENOMEM;
98289@@ -1605,7 +1609,7 @@ int sk_unattached_filter_create(struct sk_filter **pfp,
98290 if (!fp)
98291 return -ENOMEM;
98292
98293- memcpy(fp->insns, fprog->filter, fsize);
98294+ memcpy(fp->insns, (void __force_kernel *)fprog->filter, fsize);
98295
98296 atomic_set(&fp->refcnt, 1);
98297 fp->len = fprog->len;
98298diff --git a/net/core/flow.c b/net/core/flow.c
98299index a0348fd..6951c76 100644
98300--- a/net/core/flow.c
98301+++ b/net/core/flow.c
98302@@ -65,7 +65,7 @@ static void flow_cache_new_hashrnd(unsigned long arg)
98303 static int flow_entry_valid(struct flow_cache_entry *fle,
98304 struct netns_xfrm *xfrm)
98305 {
98306- if (atomic_read(&xfrm->flow_cache_genid) != fle->genid)
98307+ if (atomic_read_unchecked(&xfrm->flow_cache_genid) != fle->genid)
98308 return 0;
98309 if (fle->object && !fle->object->ops->check(fle->object))
98310 return 0;
98311@@ -242,7 +242,7 @@ flow_cache_lookup(struct net *net, const struct flowi *key, u16 family, u8 dir,
98312 hlist_add_head(&fle->u.hlist, &fcp->hash_table[hash]);
98313 fcp->hash_count++;
98314 }
98315- } else if (likely(fle->genid == atomic_read(&net->xfrm.flow_cache_genid))) {
98316+ } else if (likely(fle->genid == atomic_read_unchecked(&net->xfrm.flow_cache_genid))) {
98317 flo = fle->object;
98318 if (!flo)
98319 goto ret_object;
98320@@ -263,7 +263,7 @@ nocache:
98321 }
98322 flo = resolver(net, key, family, dir, flo, ctx);
98323 if (fle) {
98324- fle->genid = atomic_read(&net->xfrm.flow_cache_genid);
98325+ fle->genid = atomic_read_unchecked(&net->xfrm.flow_cache_genid);
98326 if (!IS_ERR(flo))
98327 fle->object = flo;
98328 else
98329diff --git a/net/core/iovec.c b/net/core/iovec.c
98330index b618694..192bbba 100644
98331--- a/net/core/iovec.c
98332+++ b/net/core/iovec.c
98333@@ -42,7 +42,7 @@ int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr_storage *a
98334 if (m->msg_namelen) {
98335 if (mode == VERIFY_READ) {
98336 void __user *namep;
98337- namep = (void __user __force *) m->msg_name;
98338+ namep = (void __force_user *) m->msg_name;
98339 err = move_addr_to_kernel(namep, m->msg_namelen,
98340 address);
98341 if (err < 0)
98342@@ -55,7 +55,7 @@ int verify_iovec(struct msghdr *m, struct iovec *iov, struct sockaddr_storage *a
98343 }
98344
98345 size = m->msg_iovlen * sizeof(struct iovec);
98346- if (copy_from_user(iov, (void __user __force *) m->msg_iov, size))
98347+ if (copy_from_user(iov, (void __force_user *) m->msg_iov, size))
98348 return -EFAULT;
98349
98350 m->msg_iov = iov;
98351diff --git a/net/core/neighbour.c b/net/core/neighbour.c
98352index 32d872e..487e769 100644
98353--- a/net/core/neighbour.c
98354+++ b/net/core/neighbour.c
98355@@ -2825,7 +2825,7 @@ static int proc_unres_qlen(struct ctl_table *ctl, int write,
98356 void __user *buffer, size_t *lenp, loff_t *ppos)
98357 {
98358 int size, ret;
98359- struct ctl_table tmp = *ctl;
98360+ ctl_table_no_const tmp = *ctl;
98361
98362 tmp.extra1 = &zero;
98363 tmp.extra2 = &unres_qlen_max;
98364@@ -2887,7 +2887,7 @@ static int neigh_proc_dointvec_zero_intmax(struct ctl_table *ctl, int write,
98365 void __user *buffer,
98366 size_t *lenp, loff_t *ppos)
98367 {
98368- struct ctl_table tmp = *ctl;
98369+ ctl_table_no_const tmp = *ctl;
98370 int ret;
98371
98372 tmp.extra1 = &zero;
98373@@ -3059,11 +3059,12 @@ int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p,
98374 memset(&t->neigh_vars[NEIGH_VAR_GC_INTERVAL], 0,
98375 sizeof(t->neigh_vars[NEIGH_VAR_GC_INTERVAL]));
98376 } else {
98377+ struct neigh_table *ntable = container_of(p, struct neigh_table, parms);
98378 dev_name_source = "default";
98379- t->neigh_vars[NEIGH_VAR_GC_INTERVAL].data = (int *)(p + 1);
98380- t->neigh_vars[NEIGH_VAR_GC_THRESH1].data = (int *)(p + 1) + 1;
98381- t->neigh_vars[NEIGH_VAR_GC_THRESH2].data = (int *)(p + 1) + 2;
98382- t->neigh_vars[NEIGH_VAR_GC_THRESH3].data = (int *)(p + 1) + 3;
98383+ t->neigh_vars[NEIGH_VAR_GC_INTERVAL].data = &ntable->gc_interval;
98384+ t->neigh_vars[NEIGH_VAR_GC_THRESH1].data = &ntable->gc_thresh1;
98385+ t->neigh_vars[NEIGH_VAR_GC_THRESH2].data = &ntable->gc_thresh2;
98386+ t->neigh_vars[NEIGH_VAR_GC_THRESH3].data = &ntable->gc_thresh3;
98387 }
98388
98389 if (handler) {
98390diff --git a/net/core/net-procfs.c b/net/core/net-procfs.c
98391index 2bf8329..2eb1423 100644
98392--- a/net/core/net-procfs.c
98393+++ b/net/core/net-procfs.c
98394@@ -79,7 +79,13 @@ static void dev_seq_printf_stats(struct seq_file *seq, struct net_device *dev)
98395 struct rtnl_link_stats64 temp;
98396 const struct rtnl_link_stats64 *stats = dev_get_stats(dev, &temp);
98397
98398- seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
98399+ if (gr_proc_is_restricted())
98400+ seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
98401+ "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
98402+ dev->name, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL,
98403+ 0ULL, 0ULL, 0ULL, 0ULL, 0ULL, 0ULL);
98404+ else
98405+ seq_printf(seq, "%6s: %7llu %7llu %4llu %4llu %4llu %5llu %10llu %9llu "
98406 "%8llu %7llu %4llu %4llu %4llu %5llu %7llu %10llu\n",
98407 dev->name, stats->rx_bytes, stats->rx_packets,
98408 stats->rx_errors,
98409@@ -166,7 +172,7 @@ static int softnet_seq_show(struct seq_file *seq, void *v)
98410 return 0;
98411 }
98412
98413-static const struct seq_operations dev_seq_ops = {
98414+const struct seq_operations dev_seq_ops = {
98415 .start = dev_seq_start,
98416 .next = dev_seq_next,
98417 .stop = dev_seq_stop,
98418@@ -196,7 +202,7 @@ static const struct seq_operations softnet_seq_ops = {
98419
98420 static int softnet_seq_open(struct inode *inode, struct file *file)
98421 {
98422- return seq_open(file, &softnet_seq_ops);
98423+ return seq_open_restrict(file, &softnet_seq_ops);
98424 }
98425
98426 static const struct file_operations softnet_seq_fops = {
98427@@ -283,8 +289,13 @@ static int ptype_seq_show(struct seq_file *seq, void *v)
98428 else
98429 seq_printf(seq, "%04x", ntohs(pt->type));
98430
98431+#ifdef CONFIG_GRKERNSEC_HIDESYM
98432+ seq_printf(seq, " %-8s %pf\n",
98433+ pt->dev ? pt->dev->name : "", NULL);
98434+#else
98435 seq_printf(seq, " %-8s %pf\n",
98436 pt->dev ? pt->dev->name : "", pt->func);
98437+#endif
98438 }
98439
98440 return 0;
98441diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c
98442index 1cac29e..fb482f3 100644
98443--- a/net/core/net-sysfs.c
98444+++ b/net/core/net-sysfs.c
98445@@ -259,7 +259,7 @@ static ssize_t carrier_changes_show(struct device *dev,
98446 {
98447 struct net_device *netdev = to_net_dev(dev);
98448 return sprintf(buf, fmt_dec,
98449- atomic_read(&netdev->carrier_changes));
98450+ atomic_read_unchecked(&netdev->carrier_changes));
98451 }
98452 static DEVICE_ATTR_RO(carrier_changes);
98453
98454diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
98455index 7c8ffd9..0cb3687 100644
98456--- a/net/core/net_namespace.c
98457+++ b/net/core/net_namespace.c
98458@@ -443,7 +443,7 @@ static int __register_pernet_operations(struct list_head *list,
98459 int error;
98460 LIST_HEAD(net_exit_list);
98461
98462- list_add_tail(&ops->list, list);
98463+ pax_list_add_tail((struct list_head *)&ops->list, list);
98464 if (ops->init || (ops->id && ops->size)) {
98465 for_each_net(net) {
98466 error = ops_init(ops, net);
98467@@ -456,7 +456,7 @@ static int __register_pernet_operations(struct list_head *list,
98468
98469 out_undo:
98470 /* If I have an error cleanup all namespaces I initialized */
98471- list_del(&ops->list);
98472+ pax_list_del((struct list_head *)&ops->list);
98473 ops_exit_list(ops, &net_exit_list);
98474 ops_free_list(ops, &net_exit_list);
98475 return error;
98476@@ -467,7 +467,7 @@ static void __unregister_pernet_operations(struct pernet_operations *ops)
98477 struct net *net;
98478 LIST_HEAD(net_exit_list);
98479
98480- list_del(&ops->list);
98481+ pax_list_del((struct list_head *)&ops->list);
98482 for_each_net(net)
98483 list_add_tail(&net->exit_list, &net_exit_list);
98484 ops_exit_list(ops, &net_exit_list);
98485@@ -601,7 +601,7 @@ int register_pernet_device(struct pernet_operations *ops)
98486 mutex_lock(&net_mutex);
98487 error = register_pernet_operations(&pernet_list, ops);
98488 if (!error && (first_device == &pernet_list))
98489- first_device = &ops->list;
98490+ first_device = (struct list_head *)&ops->list;
98491 mutex_unlock(&net_mutex);
98492 return error;
98493 }
98494diff --git a/net/core/netpoll.c b/net/core/netpoll.c
98495index e33937f..b2b4981 100644
98496--- a/net/core/netpoll.c
98497+++ b/net/core/netpoll.c
98498@@ -382,7 +382,7 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
98499 struct udphdr *udph;
98500 struct iphdr *iph;
98501 struct ethhdr *eth;
98502- static atomic_t ip_ident;
98503+ static atomic_unchecked_t ip_ident;
98504 struct ipv6hdr *ip6h;
98505
98506 udp_len = len + sizeof(*udph);
98507@@ -453,7 +453,7 @@ void netpoll_send_udp(struct netpoll *np, const char *msg, int len)
98508 put_unaligned(0x45, (unsigned char *)iph);
98509 iph->tos = 0;
98510 put_unaligned(htons(ip_len), &(iph->tot_len));
98511- iph->id = htons(atomic_inc_return(&ip_ident));
98512+ iph->id = htons(atomic_inc_return_unchecked(&ip_ident));
98513 iph->frag_off = 0;
98514 iph->ttl = 64;
98515 iph->protocol = IPPROTO_UDP;
98516diff --git a/net/core/pktgen.c b/net/core/pktgen.c
98517index 0304f98..ddfead6 100644
98518--- a/net/core/pktgen.c
98519+++ b/net/core/pktgen.c
98520@@ -3725,7 +3725,7 @@ static int __net_init pg_net_init(struct net *net)
98521 pn->net = net;
98522 INIT_LIST_HEAD(&pn->pktgen_threads);
98523 pn->pktgen_exiting = false;
98524- pn->proc_dir = proc_mkdir(PG_PROC_DIR, pn->net->proc_net);
98525+ pn->proc_dir = proc_mkdir_restrict(PG_PROC_DIR, pn->net->proc_net);
98526 if (!pn->proc_dir) {
98527 pr_warn("cannot create /proc/net/%s\n", PG_PROC_DIR);
98528 return -ENODEV;
98529diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
98530index 1999ed8..1e6e58a 100644
98531--- a/net/core/rtnetlink.c
98532+++ b/net/core/rtnetlink.c
98533@@ -58,7 +58,7 @@ struct rtnl_link {
98534 rtnl_doit_func doit;
98535 rtnl_dumpit_func dumpit;
98536 rtnl_calcit_func calcit;
98537-};
98538+} __no_const;
98539
98540 static DEFINE_MUTEX(rtnl_mutex);
98541
98542@@ -299,10 +299,13 @@ int __rtnl_link_register(struct rtnl_link_ops *ops)
98543 if (rtnl_link_ops_get(ops->kind))
98544 return -EEXIST;
98545
98546- if (!ops->dellink)
98547- ops->dellink = unregister_netdevice_queue;
98548+ if (!ops->dellink) {
98549+ pax_open_kernel();
98550+ *(void **)&ops->dellink = unregister_netdevice_queue;
98551+ pax_close_kernel();
98552+ }
98553
98554- list_add_tail(&ops->list, &link_ops);
98555+ pax_list_add_tail((struct list_head *)&ops->list, &link_ops);
98556 return 0;
98557 }
98558 EXPORT_SYMBOL_GPL(__rtnl_link_register);
98559@@ -349,7 +352,7 @@ void __rtnl_link_unregister(struct rtnl_link_ops *ops)
98560 for_each_net(net) {
98561 __rtnl_kill_links(net, ops);
98562 }
98563- list_del(&ops->list);
98564+ pax_list_del((struct list_head *)&ops->list);
98565 }
98566 EXPORT_SYMBOL_GPL(__rtnl_link_unregister);
98567
98568@@ -1008,7 +1011,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
98569 (dev->ifalias &&
98570 nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) ||
98571 nla_put_u32(skb, IFLA_CARRIER_CHANGES,
98572- atomic_read(&dev->carrier_changes)))
98573+ atomic_read_unchecked(&dev->carrier_changes)))
98574 goto nla_put_failure;
98575
98576 if (1) {
98577diff --git a/net/core/scm.c b/net/core/scm.c
98578index b442e7e..6f5b5a2 100644
98579--- a/net/core/scm.c
98580+++ b/net/core/scm.c
98581@@ -210,7 +210,7 @@ EXPORT_SYMBOL(__scm_send);
98582 int put_cmsg(struct msghdr * msg, int level, int type, int len, void *data)
98583 {
98584 struct cmsghdr __user *cm
98585- = (__force struct cmsghdr __user *)msg->msg_control;
98586+ = (struct cmsghdr __force_user *)msg->msg_control;
98587 struct cmsghdr cmhdr;
98588 int cmlen = CMSG_LEN(len);
98589 int err;
98590@@ -233,7 +233,7 @@ int put_cmsg(struct msghdr * msg, int level, int type, int len, void *data)
98591 err = -EFAULT;
98592 if (copy_to_user(cm, &cmhdr, sizeof cmhdr))
98593 goto out;
98594- if (copy_to_user(CMSG_DATA(cm), data, cmlen - sizeof(struct cmsghdr)))
98595+ if (copy_to_user((void __force_user *)CMSG_DATA((void __force_kernel *)cm), data, cmlen - sizeof(struct cmsghdr)))
98596 goto out;
98597 cmlen = CMSG_SPACE(len);
98598 if (msg->msg_controllen < cmlen)
98599@@ -249,7 +249,7 @@ EXPORT_SYMBOL(put_cmsg);
98600 void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm)
98601 {
98602 struct cmsghdr __user *cm
98603- = (__force struct cmsghdr __user*)msg->msg_control;
98604+ = (struct cmsghdr __force_user *)msg->msg_control;
98605
98606 int fdmax = 0;
98607 int fdnum = scm->fp->count;
98608@@ -269,7 +269,7 @@ void scm_detach_fds(struct msghdr *msg, struct scm_cookie *scm)
98609 if (fdnum < fdmax)
98610 fdmax = fdnum;
98611
98612- for (i=0, cmfptr=(__force int __user *)CMSG_DATA(cm); i<fdmax;
98613+ for (i=0, cmfptr=(int __force_user *)CMSG_DATA((void __force_kernel *)cm); i<fdmax;
98614 i++, cmfptr++)
98615 {
98616 struct socket *sock;
98617diff --git a/net/core/skbuff.c b/net/core/skbuff.c
98618index 8383b2b..6397efb 100644
98619--- a/net/core/skbuff.c
98620+++ b/net/core/skbuff.c
98621@@ -2003,7 +2003,7 @@ EXPORT_SYMBOL(__skb_checksum);
98622 __wsum skb_checksum(const struct sk_buff *skb, int offset,
98623 int len, __wsum csum)
98624 {
98625- const struct skb_checksum_ops ops = {
98626+ static const struct skb_checksum_ops ops = {
98627 .update = csum_partial_ext,
98628 .combine = csum_block_add_ext,
98629 };
98630@@ -3220,13 +3220,15 @@ void __init skb_init(void)
98631 skbuff_head_cache = kmem_cache_create("skbuff_head_cache",
98632 sizeof(struct sk_buff),
98633 0,
98634- SLAB_HWCACHE_ALIGN|SLAB_PANIC,
98635+ SLAB_HWCACHE_ALIGN|SLAB_PANIC|
98636+ SLAB_NO_SANITIZE,
98637 NULL);
98638 skbuff_fclone_cache = kmem_cache_create("skbuff_fclone_cache",
98639 (2*sizeof(struct sk_buff)) +
98640 sizeof(atomic_t),
98641 0,
98642- SLAB_HWCACHE_ALIGN|SLAB_PANIC,
98643+ SLAB_HWCACHE_ALIGN|SLAB_PANIC|
98644+ SLAB_NO_SANITIZE,
98645 NULL);
98646 }
98647
98648diff --git a/net/core/sock.c b/net/core/sock.c
98649index 664ee42..aaf9e6e 100644
98650--- a/net/core/sock.c
98651+++ b/net/core/sock.c
98652@@ -442,7 +442,7 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
98653 struct sk_buff_head *list = &sk->sk_receive_queue;
98654
98655 if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf) {
98656- atomic_inc(&sk->sk_drops);
98657+ atomic_inc_unchecked(&sk->sk_drops);
98658 trace_sock_rcvqueue_full(sk, skb);
98659 return -ENOMEM;
98660 }
98661@@ -452,7 +452,7 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
98662 return err;
98663
98664 if (!sk_rmem_schedule(sk, skb, skb->truesize)) {
98665- atomic_inc(&sk->sk_drops);
98666+ atomic_inc_unchecked(&sk->sk_drops);
98667 return -ENOBUFS;
98668 }
98669
98670@@ -472,7 +472,7 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
98671 skb_dst_force(skb);
98672
98673 spin_lock_irqsave(&list->lock, flags);
98674- skb->dropcount = atomic_read(&sk->sk_drops);
98675+ skb->dropcount = atomic_read_unchecked(&sk->sk_drops);
98676 __skb_queue_tail(list, skb);
98677 spin_unlock_irqrestore(&list->lock, flags);
98678
98679@@ -492,7 +492,7 @@ int sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested)
98680 skb->dev = NULL;
98681
98682 if (sk_rcvqueues_full(sk, skb, sk->sk_rcvbuf)) {
98683- atomic_inc(&sk->sk_drops);
98684+ atomic_inc_unchecked(&sk->sk_drops);
98685 goto discard_and_relse;
98686 }
98687 if (nested)
98688@@ -510,7 +510,7 @@ int sk_receive_skb(struct sock *sk, struct sk_buff *skb, const int nested)
98689 mutex_release(&sk->sk_lock.dep_map, 1, _RET_IP_);
98690 } else if (sk_add_backlog(sk, skb, sk->sk_rcvbuf)) {
98691 bh_unlock_sock(sk);
98692- atomic_inc(&sk->sk_drops);
98693+ atomic_inc_unchecked(&sk->sk_drops);
98694 goto discard_and_relse;
98695 }
98696
98697@@ -998,12 +998,12 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
98698 struct timeval tm;
98699 } v;
98700
98701- int lv = sizeof(int);
98702- int len;
98703+ unsigned int lv = sizeof(int);
98704+ unsigned int len;
98705
98706 if (get_user(len, optlen))
98707 return -EFAULT;
98708- if (len < 0)
98709+ if (len > INT_MAX)
98710 return -EINVAL;
98711
98712 memset(&v, 0, sizeof(v));
98713@@ -1155,11 +1155,11 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
98714
98715 case SO_PEERNAME:
98716 {
98717- char address[128];
98718+ char address[_K_SS_MAXSIZE];
98719
98720 if (sock->ops->getname(sock, (struct sockaddr *)address, &lv, 2))
98721 return -ENOTCONN;
98722- if (lv < len)
98723+ if (lv < len || sizeof address < len)
98724 return -EINVAL;
98725 if (copy_to_user(optval, address, len))
98726 return -EFAULT;
98727@@ -1240,7 +1240,7 @@ int sock_getsockopt(struct socket *sock, int level, int optname,
98728
98729 if (len > lv)
98730 len = lv;
98731- if (copy_to_user(optval, &v, len))
98732+ if (len > sizeof(v) || copy_to_user(optval, &v, len))
98733 return -EFAULT;
98734 lenout:
98735 if (put_user(len, optlen))
98736@@ -2375,7 +2375,7 @@ void sock_init_data(struct socket *sock, struct sock *sk)
98737 */
98738 smp_wmb();
98739 atomic_set(&sk->sk_refcnt, 1);
98740- atomic_set(&sk->sk_drops, 0);
98741+ atomic_set_unchecked(&sk->sk_drops, 0);
98742 }
98743 EXPORT_SYMBOL(sock_init_data);
98744
98745@@ -2503,6 +2503,7 @@ void sock_enable_timestamp(struct sock *sk, int flag)
98746 int sock_recv_errqueue(struct sock *sk, struct msghdr *msg, int len,
98747 int level, int type)
98748 {
98749+ struct sock_extended_err ee;
98750 struct sock_exterr_skb *serr;
98751 struct sk_buff *skb, *skb2;
98752 int copied, err;
98753@@ -2524,7 +2525,8 @@ int sock_recv_errqueue(struct sock *sk, struct msghdr *msg, int len,
98754 sock_recv_timestamp(msg, sk, skb);
98755
98756 serr = SKB_EXT_ERR(skb);
98757- put_cmsg(msg, level, type, sizeof(serr->ee), &serr->ee);
98758+ ee = serr->ee;
98759+ put_cmsg(msg, level, type, sizeof ee, &ee);
98760
98761 msg->msg_flags |= MSG_ERRQUEUE;
98762 err = copied;
98763diff --git a/net/core/sock_diag.c b/net/core/sock_diag.c
98764index a4216a4..1c07687 100644
98765--- a/net/core/sock_diag.c
98766+++ b/net/core/sock_diag.c
98767@@ -9,26 +9,33 @@
98768 #include <linux/inet_diag.h>
98769 #include <linux/sock_diag.h>
98770
98771-static const struct sock_diag_handler *sock_diag_handlers[AF_MAX];
98772+static const struct sock_diag_handler *sock_diag_handlers[AF_MAX] __read_only;
98773 static int (*inet_rcv_compat)(struct sk_buff *skb, struct nlmsghdr *nlh);
98774 static DEFINE_MUTEX(sock_diag_table_mutex);
98775
98776 int sock_diag_check_cookie(void *sk, __u32 *cookie)
98777 {
98778+#ifndef CONFIG_GRKERNSEC_HIDESYM
98779 if ((cookie[0] != INET_DIAG_NOCOOKIE ||
98780 cookie[1] != INET_DIAG_NOCOOKIE) &&
98781 ((u32)(unsigned long)sk != cookie[0] ||
98782 (u32)((((unsigned long)sk) >> 31) >> 1) != cookie[1]))
98783 return -ESTALE;
98784 else
98785+#endif
98786 return 0;
98787 }
98788 EXPORT_SYMBOL_GPL(sock_diag_check_cookie);
98789
98790 void sock_diag_save_cookie(void *sk, __u32 *cookie)
98791 {
98792+#ifdef CONFIG_GRKERNSEC_HIDESYM
98793+ cookie[0] = 0;
98794+ cookie[1] = 0;
98795+#else
98796 cookie[0] = (u32)(unsigned long)sk;
98797 cookie[1] = (u32)(((unsigned long)sk >> 31) >> 1);
98798+#endif
98799 }
98800 EXPORT_SYMBOL_GPL(sock_diag_save_cookie);
98801
98802@@ -110,8 +117,11 @@ int sock_diag_register(const struct sock_diag_handler *hndl)
98803 mutex_lock(&sock_diag_table_mutex);
98804 if (sock_diag_handlers[hndl->family])
98805 err = -EBUSY;
98806- else
98807+ else {
98808+ pax_open_kernel();
98809 sock_diag_handlers[hndl->family] = hndl;
98810+ pax_close_kernel();
98811+ }
98812 mutex_unlock(&sock_diag_table_mutex);
98813
98814 return err;
98815@@ -127,7 +137,9 @@ void sock_diag_unregister(const struct sock_diag_handler *hnld)
98816
98817 mutex_lock(&sock_diag_table_mutex);
98818 BUG_ON(sock_diag_handlers[family] != hnld);
98819+ pax_open_kernel();
98820 sock_diag_handlers[family] = NULL;
98821+ pax_close_kernel();
98822 mutex_unlock(&sock_diag_table_mutex);
98823 }
98824 EXPORT_SYMBOL_GPL(sock_diag_unregister);
98825diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
98826index cf9cd13..8b56af3 100644
98827--- a/net/core/sysctl_net_core.c
98828+++ b/net/core/sysctl_net_core.c
98829@@ -32,7 +32,7 @@ static int rps_sock_flow_sysctl(struct ctl_table *table, int write,
98830 {
98831 unsigned int orig_size, size;
98832 int ret, i;
98833- struct ctl_table tmp = {
98834+ ctl_table_no_const tmp = {
98835 .data = &size,
98836 .maxlen = sizeof(size),
98837 .mode = table->mode
98838@@ -200,7 +200,7 @@ static int set_default_qdisc(struct ctl_table *table, int write,
98839 void __user *buffer, size_t *lenp, loff_t *ppos)
98840 {
98841 char id[IFNAMSIZ];
98842- struct ctl_table tbl = {
98843+ ctl_table_no_const tbl = {
98844 .data = id,
98845 .maxlen = IFNAMSIZ,
98846 };
98847@@ -379,13 +379,12 @@ static struct ctl_table netns_core_table[] = {
98848
98849 static __net_init int sysctl_core_net_init(struct net *net)
98850 {
98851- struct ctl_table *tbl;
98852+ ctl_table_no_const *tbl = NULL;
98853
98854 net->core.sysctl_somaxconn = SOMAXCONN;
98855
98856- tbl = netns_core_table;
98857 if (!net_eq(net, &init_net)) {
98858- tbl = kmemdup(tbl, sizeof(netns_core_table), GFP_KERNEL);
98859+ tbl = kmemdup(netns_core_table, sizeof(netns_core_table), GFP_KERNEL);
98860 if (tbl == NULL)
98861 goto err_dup;
98862
98863@@ -395,17 +394,16 @@ static __net_init int sysctl_core_net_init(struct net *net)
98864 if (net->user_ns != &init_user_ns) {
98865 tbl[0].procname = NULL;
98866 }
98867- }
98868-
98869- net->core.sysctl_hdr = register_net_sysctl(net, "net/core", tbl);
98870+ net->core.sysctl_hdr = register_net_sysctl(net, "net/core", tbl);
98871+ } else
98872+ net->core.sysctl_hdr = register_net_sysctl(net, "net/core", netns_core_table);
98873 if (net->core.sysctl_hdr == NULL)
98874 goto err_reg;
98875
98876 return 0;
98877
98878 err_reg:
98879- if (tbl != netns_core_table)
98880- kfree(tbl);
98881+ kfree(tbl);
98882 err_dup:
98883 return -ENOMEM;
98884 }
98885@@ -420,7 +418,7 @@ static __net_exit void sysctl_core_net_exit(struct net *net)
98886 kfree(tbl);
98887 }
98888
98889-static __net_initdata struct pernet_operations sysctl_core_ops = {
98890+static __net_initconst struct pernet_operations sysctl_core_ops = {
98891 .init = sysctl_core_net_init,
98892 .exit = sysctl_core_net_exit,
98893 };
98894diff --git a/net/decnet/af_decnet.c b/net/decnet/af_decnet.c
98895index 4c04848..f575934 100644
98896--- a/net/decnet/af_decnet.c
98897+++ b/net/decnet/af_decnet.c
98898@@ -465,6 +465,7 @@ static struct proto dn_proto = {
98899 .sysctl_rmem = sysctl_decnet_rmem,
98900 .max_header = DN_MAX_NSP_DATA_HEADER + 64,
98901 .obj_size = sizeof(struct dn_sock),
98902+ .slab_flags = SLAB_USERCOPY,
98903 };
98904
98905 static struct sock *dn_alloc_sock(struct net *net, struct socket *sock, gfp_t gfp)
98906diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
98907index 3b726f3..1af6368 100644
98908--- a/net/decnet/dn_dev.c
98909+++ b/net/decnet/dn_dev.c
98910@@ -200,7 +200,7 @@ static struct dn_dev_sysctl_table {
98911 .extra1 = &min_t3,
98912 .extra2 = &max_t3
98913 },
98914- {0}
98915+ { }
98916 },
98917 };
98918
98919diff --git a/net/decnet/sysctl_net_decnet.c b/net/decnet/sysctl_net_decnet.c
98920index 5325b54..a0d4d69 100644
98921--- a/net/decnet/sysctl_net_decnet.c
98922+++ b/net/decnet/sysctl_net_decnet.c
98923@@ -174,7 +174,7 @@ static int dn_node_address_handler(struct ctl_table *table, int write,
98924
98925 if (len > *lenp) len = *lenp;
98926
98927- if (copy_to_user(buffer, addr, len))
98928+ if (len > sizeof addr || copy_to_user(buffer, addr, len))
98929 return -EFAULT;
98930
98931 *lenp = len;
98932@@ -237,7 +237,7 @@ static int dn_def_dev_handler(struct ctl_table *table, int write,
98933
98934 if (len > *lenp) len = *lenp;
98935
98936- if (copy_to_user(buffer, devname, len))
98937+ if (len > sizeof devname || copy_to_user(buffer, devname, len))
98938 return -EFAULT;
98939
98940 *lenp = len;
98941diff --git a/net/ieee802154/reassembly.c b/net/ieee802154/reassembly.c
98942index ef2d543..5b9b73f 100644
98943--- a/net/ieee802154/reassembly.c
98944+++ b/net/ieee802154/reassembly.c
98945@@ -434,12 +434,11 @@ static struct ctl_table lowpan_frags_ctl_table[] = {
98946
98947 static int __net_init lowpan_frags_ns_sysctl_register(struct net *net)
98948 {
98949- struct ctl_table *table;
98950+ ctl_table_no_const *table = NULL;
98951 struct ctl_table_header *hdr;
98952
98953- table = lowpan_frags_ns_ctl_table;
98954 if (!net_eq(net, &init_net)) {
98955- table = kmemdup(table, sizeof(lowpan_frags_ns_ctl_table),
98956+ table = kmemdup(lowpan_frags_ns_ctl_table, sizeof(lowpan_frags_ns_ctl_table),
98957 GFP_KERNEL);
98958 if (table == NULL)
98959 goto err_alloc;
98960@@ -452,9 +451,9 @@ static int __net_init lowpan_frags_ns_sysctl_register(struct net *net)
98961 /* Don't export sysctls to unprivileged users */
98962 if (net->user_ns != &init_user_ns)
98963 table[0].procname = NULL;
98964- }
98965-
98966- hdr = register_net_sysctl(net, "net/ieee802154/6lowpan", table);
98967+ hdr = register_net_sysctl(net, "net/ieee802154/6lowpan", table);
98968+ } else
98969+ hdr = register_net_sysctl(net, "net/ieee802154/6lowpan", lowpan_frags_ns_ctl_table);
98970 if (hdr == NULL)
98971 goto err_reg;
98972
98973@@ -462,8 +461,7 @@ static int __net_init lowpan_frags_ns_sysctl_register(struct net *net)
98974 return 0;
98975
98976 err_reg:
98977- if (!net_eq(net, &init_net))
98978- kfree(table);
98979+ kfree(table);
98980 err_alloc:
98981 return -ENOMEM;
98982 }
98983diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
98984index 6d6dd34..e5c9bec 100644
98985--- a/net/ipv4/af_inet.c
98986+++ b/net/ipv4/af_inet.c
98987@@ -1736,13 +1736,9 @@ static int __init inet_init(void)
98988
98989 BUILD_BUG_ON(sizeof(struct inet_skb_parm) > FIELD_SIZEOF(struct sk_buff, cb));
98990
98991- sysctl_local_reserved_ports = kzalloc(65536 / 8, GFP_KERNEL);
98992- if (!sysctl_local_reserved_ports)
98993- goto out;
98994-
98995 rc = proto_register(&tcp_prot, 1);
98996 if (rc)
98997- goto out_free_reserved_ports;
98998+ goto out;
98999
99000 rc = proto_register(&udp_prot, 1);
99001 if (rc)
99002@@ -1852,8 +1848,6 @@ out_unregister_udp_proto:
99003 proto_unregister(&udp_prot);
99004 out_unregister_tcp_proto:
99005 proto_unregister(&tcp_prot);
99006-out_free_reserved_ports:
99007- kfree(sysctl_local_reserved_ports);
99008 goto out;
99009 }
99010
99011diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
99012index bdbf68b..deb4759 100644
99013--- a/net/ipv4/devinet.c
99014+++ b/net/ipv4/devinet.c
99015@@ -1543,7 +1543,7 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
99016 idx = 0;
99017 head = &net->dev_index_head[h];
99018 rcu_read_lock();
99019- cb->seq = atomic_read(&net->ipv4.dev_addr_genid) ^
99020+ cb->seq = atomic_read_unchecked(&net->ipv4.dev_addr_genid) ^
99021 net->dev_base_seq;
99022 hlist_for_each_entry_rcu(dev, head, index_hlist) {
99023 if (idx < s_idx)
99024@@ -1861,7 +1861,7 @@ static int inet_netconf_dump_devconf(struct sk_buff *skb,
99025 idx = 0;
99026 head = &net->dev_index_head[h];
99027 rcu_read_lock();
99028- cb->seq = atomic_read(&net->ipv4.dev_addr_genid) ^
99029+ cb->seq = atomic_read_unchecked(&net->ipv4.dev_addr_genid) ^
99030 net->dev_base_seq;
99031 hlist_for_each_entry_rcu(dev, head, index_hlist) {
99032 if (idx < s_idx)
99033@@ -2096,7 +2096,7 @@ static int ipv4_doint_and_flush(struct ctl_table *ctl, int write,
99034 #define DEVINET_SYSCTL_FLUSHING_ENTRY(attr, name) \
99035 DEVINET_SYSCTL_COMPLEX_ENTRY(attr, name, ipv4_doint_and_flush)
99036
99037-static struct devinet_sysctl_table {
99038+static const struct devinet_sysctl_table {
99039 struct ctl_table_header *sysctl_header;
99040 struct ctl_table devinet_vars[__IPV4_DEVCONF_MAX];
99041 } devinet_sysctl = {
99042@@ -2218,7 +2218,7 @@ static __net_init int devinet_init_net(struct net *net)
99043 int err;
99044 struct ipv4_devconf *all, *dflt;
99045 #ifdef CONFIG_SYSCTL
99046- struct ctl_table *tbl = ctl_forward_entry;
99047+ ctl_table_no_const *tbl = NULL;
99048 struct ctl_table_header *forw_hdr;
99049 #endif
99050
99051@@ -2236,7 +2236,7 @@ static __net_init int devinet_init_net(struct net *net)
99052 goto err_alloc_dflt;
99053
99054 #ifdef CONFIG_SYSCTL
99055- tbl = kmemdup(tbl, sizeof(ctl_forward_entry), GFP_KERNEL);
99056+ tbl = kmemdup(ctl_forward_entry, sizeof(ctl_forward_entry), GFP_KERNEL);
99057 if (tbl == NULL)
99058 goto err_alloc_ctl;
99059
99060@@ -2256,7 +2256,10 @@ static __net_init int devinet_init_net(struct net *net)
99061 goto err_reg_dflt;
99062
99063 err = -ENOMEM;
99064- forw_hdr = register_net_sysctl(net, "net/ipv4", tbl);
99065+ if (!net_eq(net, &init_net))
99066+ forw_hdr = register_net_sysctl(net, "net/ipv4", tbl);
99067+ else
99068+ forw_hdr = register_net_sysctl(net, "net/ipv4", ctl_forward_entry);
99069 if (forw_hdr == NULL)
99070 goto err_reg_ctl;
99071 net->ipv4.forw_hdr = forw_hdr;
99072@@ -2272,8 +2275,7 @@ err_reg_ctl:
99073 err_reg_dflt:
99074 __devinet_sysctl_unregister(all);
99075 err_reg_all:
99076- if (tbl != ctl_forward_entry)
99077- kfree(tbl);
99078+ kfree(tbl);
99079 err_alloc_ctl:
99080 #endif
99081 if (dflt != &ipv4_devconf_dflt)
99082diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
99083index 255aa99..45c78f8 100644
99084--- a/net/ipv4/fib_frontend.c
99085+++ b/net/ipv4/fib_frontend.c
99086@@ -1015,12 +1015,12 @@ static int fib_inetaddr_event(struct notifier_block *this, unsigned long event,
99087 #ifdef CONFIG_IP_ROUTE_MULTIPATH
99088 fib_sync_up(dev);
99089 #endif
99090- atomic_inc(&net->ipv4.dev_addr_genid);
99091+ atomic_inc_unchecked(&net->ipv4.dev_addr_genid);
99092 rt_cache_flush(dev_net(dev));
99093 break;
99094 case NETDEV_DOWN:
99095 fib_del_ifaddr(ifa, NULL);
99096- atomic_inc(&net->ipv4.dev_addr_genid);
99097+ atomic_inc_unchecked(&net->ipv4.dev_addr_genid);
99098 if (ifa->ifa_dev->ifa_list == NULL) {
99099 /* Last address was deleted from this interface.
99100 * Disable IP.
99101@@ -1058,7 +1058,7 @@ static int fib_netdev_event(struct notifier_block *this, unsigned long event, vo
99102 #ifdef CONFIG_IP_ROUTE_MULTIPATH
99103 fib_sync_up(dev);
99104 #endif
99105- atomic_inc(&net->ipv4.dev_addr_genid);
99106+ atomic_inc_unchecked(&net->ipv4.dev_addr_genid);
99107 rt_cache_flush(net);
99108 break;
99109 case NETDEV_DOWN:
99110diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
99111index b10cd43a..22327f9 100644
99112--- a/net/ipv4/fib_semantics.c
99113+++ b/net/ipv4/fib_semantics.c
99114@@ -768,7 +768,7 @@ __be32 fib_info_update_nh_saddr(struct net *net, struct fib_nh *nh)
99115 nh->nh_saddr = inet_select_addr(nh->nh_dev,
99116 nh->nh_gw,
99117 nh->nh_parent->fib_scope);
99118- nh->nh_saddr_genid = atomic_read(&net->ipv4.dev_addr_genid);
99119+ nh->nh_saddr_genid = atomic_read_unchecked(&net->ipv4.dev_addr_genid);
99120
99121 return nh->nh_saddr;
99122 }
99123diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
99124index a56b8e6..5be2a30 100644
99125--- a/net/ipv4/inet_connection_sock.c
99126+++ b/net/ipv4/inet_connection_sock.c
99127@@ -29,7 +29,7 @@ const char inet_csk_timer_bug_msg[] = "inet_csk BUG: unknown timer value\n";
99128 EXPORT_SYMBOL(inet_csk_timer_bug_msg);
99129 #endif
99130
99131-unsigned long *sysctl_local_reserved_ports;
99132+unsigned long sysctl_local_reserved_ports[65536 / 8 / sizeof(unsigned long)];
99133 EXPORT_SYMBOL(sysctl_local_reserved_ports);
99134
99135 void inet_get_local_port_range(struct net *net, int *low, int *high)
99136diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
99137index 8b9cf27..0d8d592 100644
99138--- a/net/ipv4/inet_hashtables.c
99139+++ b/net/ipv4/inet_hashtables.c
99140@@ -18,6 +18,7 @@
99141 #include <linux/sched.h>
99142 #include <linux/slab.h>
99143 #include <linux/wait.h>
99144+#include <linux/security.h>
99145
99146 #include <net/inet_connection_sock.h>
99147 #include <net/inet_hashtables.h>
99148@@ -49,6 +50,8 @@ static unsigned int inet_sk_ehashfn(const struct sock *sk)
99149 return inet_ehashfn(net, laddr, lport, faddr, fport);
99150 }
99151
99152+extern void gr_update_task_in_ip_table(struct task_struct *task, const struct inet_sock *inet);
99153+
99154 /*
99155 * Allocate and initialize a new local port bind bucket.
99156 * The bindhash mutex for snum's hash chain must be held here.
99157@@ -554,6 +557,8 @@ ok:
99158 twrefcnt += inet_twsk_bind_unhash(tw, hinfo);
99159 spin_unlock(&head->lock);
99160
99161+ gr_update_task_in_ip_table(current, inet_sk(sk));
99162+
99163 if (tw) {
99164 inet_twsk_deschedule(tw, death_row);
99165 while (twrefcnt) {
99166diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
99167index 48f4244..f56d83a 100644
99168--- a/net/ipv4/inetpeer.c
99169+++ b/net/ipv4/inetpeer.c
99170@@ -496,8 +496,8 @@ relookup:
99171 if (p) {
99172 p->daddr = *daddr;
99173 atomic_set(&p->refcnt, 1);
99174- atomic_set(&p->rid, 0);
99175- atomic_set(&p->ip_id_count,
99176+ atomic_set_unchecked(&p->rid, 0);
99177+ atomic_set_unchecked(&p->ip_id_count,
99178 (daddr->family == AF_INET) ?
99179 secure_ip_id(daddr->addr.a4) :
99180 secure_ipv6_id(daddr->addr.a6));
99181diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c
99182index ed32313..3762abe 100644
99183--- a/net/ipv4/ip_fragment.c
99184+++ b/net/ipv4/ip_fragment.c
99185@@ -284,7 +284,7 @@ static inline int ip_frag_too_far(struct ipq *qp)
99186 return 0;
99187
99188 start = qp->rid;
99189- end = atomic_inc_return(&peer->rid);
99190+ end = atomic_inc_return_unchecked(&peer->rid);
99191 qp->rid = end;
99192
99193 rc = qp->q.fragments && (end - start) > max;
99194@@ -761,12 +761,11 @@ static struct ctl_table ip4_frags_ctl_table[] = {
99195
99196 static int __net_init ip4_frags_ns_ctl_register(struct net *net)
99197 {
99198- struct ctl_table *table;
99199+ ctl_table_no_const *table = NULL;
99200 struct ctl_table_header *hdr;
99201
99202- table = ip4_frags_ns_ctl_table;
99203 if (!net_eq(net, &init_net)) {
99204- table = kmemdup(table, sizeof(ip4_frags_ns_ctl_table), GFP_KERNEL);
99205+ table = kmemdup(ip4_frags_ns_ctl_table, sizeof(ip4_frags_ns_ctl_table), GFP_KERNEL);
99206 if (table == NULL)
99207 goto err_alloc;
99208
99209@@ -777,9 +776,10 @@ static int __net_init ip4_frags_ns_ctl_register(struct net *net)
99210 /* Don't export sysctls to unprivileged users */
99211 if (net->user_ns != &init_user_ns)
99212 table[0].procname = NULL;
99213- }
99214+ hdr = register_net_sysctl(net, "net/ipv4", table);
99215+ } else
99216+ hdr = register_net_sysctl(net, "net/ipv4", ip4_frags_ns_ctl_table);
99217
99218- hdr = register_net_sysctl(net, "net/ipv4", table);
99219 if (hdr == NULL)
99220 goto err_reg;
99221
99222@@ -787,8 +787,7 @@ static int __net_init ip4_frags_ns_ctl_register(struct net *net)
99223 return 0;
99224
99225 err_reg:
99226- if (!net_eq(net, &init_net))
99227- kfree(table);
99228+ kfree(table);
99229 err_alloc:
99230 return -ENOMEM;
99231 }
99232diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
99233index 94213c8..8bdb342 100644
99234--- a/net/ipv4/ip_gre.c
99235+++ b/net/ipv4/ip_gre.c
99236@@ -115,7 +115,7 @@ static bool log_ecn_error = true;
99237 module_param(log_ecn_error, bool, 0644);
99238 MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN");
99239
99240-static struct rtnl_link_ops ipgre_link_ops __read_mostly;
99241+static struct rtnl_link_ops ipgre_link_ops;
99242 static int ipgre_tunnel_init(struct net_device *dev);
99243
99244 static int ipgre_net_id __read_mostly;
99245@@ -732,7 +732,7 @@ static const struct nla_policy ipgre_policy[IFLA_GRE_MAX + 1] = {
99246 [IFLA_GRE_PMTUDISC] = { .type = NLA_U8 },
99247 };
99248
99249-static struct rtnl_link_ops ipgre_link_ops __read_mostly = {
99250+static struct rtnl_link_ops ipgre_link_ops = {
99251 .kind = "gre",
99252 .maxtype = IFLA_GRE_MAX,
99253 .policy = ipgre_policy,
99254@@ -746,7 +746,7 @@ static struct rtnl_link_ops ipgre_link_ops __read_mostly = {
99255 .fill_info = ipgre_fill_info,
99256 };
99257
99258-static struct rtnl_link_ops ipgre_tap_ops __read_mostly = {
99259+static struct rtnl_link_ops ipgre_tap_ops = {
99260 .kind = "gretap",
99261 .maxtype = IFLA_GRE_MAX,
99262 .policy = ipgre_policy,
99263diff --git a/net/ipv4/ip_sockglue.c b/net/ipv4/ip_sockglue.c
99264index 64741b9..6f334a2 100644
99265--- a/net/ipv4/ip_sockglue.c
99266+++ b/net/ipv4/ip_sockglue.c
99267@@ -1188,7 +1188,8 @@ static int do_ip_getsockopt(struct sock *sk, int level, int optname,
99268 len = min_t(unsigned int, len, opt->optlen);
99269 if (put_user(len, optlen))
99270 return -EFAULT;
99271- if (copy_to_user(optval, opt->__data, len))
99272+ if ((len > (sizeof(optbuf) - sizeof(struct ip_options))) ||
99273+ copy_to_user(optval, opt->__data, len))
99274 return -EFAULT;
99275 return 0;
99276 }
99277@@ -1319,7 +1320,7 @@ static int do_ip_getsockopt(struct sock *sk, int level, int optname,
99278 if (sk->sk_type != SOCK_STREAM)
99279 return -ENOPROTOOPT;
99280
99281- msg.msg_control = optval;
99282+ msg.msg_control = (void __force_kernel *)optval;
99283 msg.msg_controllen = len;
99284 msg.msg_flags = flags;
99285
99286diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
99287index 2acc233..b93143f 100644
99288--- a/net/ipv4/ip_tunnel.c
99289+++ b/net/ipv4/ip_tunnel.c
99290@@ -73,12 +73,7 @@ static void __tunnel_dst_set(struct ip_tunnel_dst *idst,
99291 {
99292 struct dst_entry *old_dst;
99293
99294- if (dst) {
99295- if (dst->flags & DST_NOCACHE)
99296- dst = NULL;
99297- else
99298- dst_clone(dst);
99299- }
99300+ dst_clone(dst);
99301 old_dst = xchg((__force struct dst_entry **)&idst->dst, dst);
99302 dst_release(old_dst);
99303 }
99304@@ -108,13 +103,14 @@ static struct rtable *tunnel_rtable_get(struct ip_tunnel *t, u32 cookie)
99305
99306 rcu_read_lock();
99307 dst = rcu_dereference(this_cpu_ptr(t->dst_cache)->dst);
99308+ if (dst && !atomic_inc_not_zero(&dst->__refcnt))
99309+ dst = NULL;
99310 if (dst) {
99311 if (dst->obsolete && dst->ops->check(dst, cookie) == NULL) {
99312- rcu_read_unlock();
99313 tunnel_dst_reset(t);
99314- return NULL;
99315+ dst_release(dst);
99316+ dst = NULL;
99317 }
99318- dst_hold(dst);
99319 }
99320 rcu_read_unlock();
99321 return (struct rtable *)dst;
99322diff --git a/net/ipv4/ip_vti.c b/net/ipv4/ip_vti.c
99323index 13ef00f..8ffca25 100644
99324--- a/net/ipv4/ip_vti.c
99325+++ b/net/ipv4/ip_vti.c
99326@@ -45,7 +45,7 @@
99327 #include <net/net_namespace.h>
99328 #include <net/netns/generic.h>
99329
99330-static struct rtnl_link_ops vti_link_ops __read_mostly;
99331+static struct rtnl_link_ops vti_link_ops;
99332
99333 static int vti_net_id __read_mostly;
99334 static int vti_tunnel_init(struct net_device *dev);
99335@@ -513,7 +513,7 @@ static const struct nla_policy vti_policy[IFLA_VTI_MAX + 1] = {
99336 [IFLA_VTI_REMOTE] = { .len = FIELD_SIZEOF(struct iphdr, daddr) },
99337 };
99338
99339-static struct rtnl_link_ops vti_link_ops __read_mostly = {
99340+static struct rtnl_link_ops vti_link_ops = {
99341 .kind = "vti",
99342 .maxtype = IFLA_VTI_MAX,
99343 .policy = vti_policy,
99344diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
99345index b3e86ea..18ce98c 100644
99346--- a/net/ipv4/ipconfig.c
99347+++ b/net/ipv4/ipconfig.c
99348@@ -334,7 +334,7 @@ static int __init ic_devinet_ioctl(unsigned int cmd, struct ifreq *arg)
99349
99350 mm_segment_t oldfs = get_fs();
99351 set_fs(get_ds());
99352- res = devinet_ioctl(&init_net, cmd, (struct ifreq __user *) arg);
99353+ res = devinet_ioctl(&init_net, cmd, (struct ifreq __force_user *) arg);
99354 set_fs(oldfs);
99355 return res;
99356 }
99357@@ -345,7 +345,7 @@ static int __init ic_dev_ioctl(unsigned int cmd, struct ifreq *arg)
99358
99359 mm_segment_t oldfs = get_fs();
99360 set_fs(get_ds());
99361- res = dev_ioctl(&init_net, cmd, (struct ifreq __user *) arg);
99362+ res = dev_ioctl(&init_net, cmd, (struct ifreq __force_user *) arg);
99363 set_fs(oldfs);
99364 return res;
99365 }
99366@@ -356,7 +356,7 @@ static int __init ic_route_ioctl(unsigned int cmd, struct rtentry *arg)
99367
99368 mm_segment_t oldfs = get_fs();
99369 set_fs(get_ds());
99370- res = ip_rt_ioctl(&init_net, cmd, (void __user *) arg);
99371+ res = ip_rt_ioctl(&init_net, cmd, (void __force_user *) arg);
99372 set_fs(oldfs);
99373 return res;
99374 }
99375diff --git a/net/ipv4/ipip.c b/net/ipv4/ipip.c
99376index 62eaa00..29b2dc2 100644
99377--- a/net/ipv4/ipip.c
99378+++ b/net/ipv4/ipip.c
99379@@ -124,7 +124,7 @@ MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN");
99380 static int ipip_net_id __read_mostly;
99381
99382 static int ipip_tunnel_init(struct net_device *dev);
99383-static struct rtnl_link_ops ipip_link_ops __read_mostly;
99384+static struct rtnl_link_ops ipip_link_ops;
99385
99386 static int ipip_err(struct sk_buff *skb, u32 info)
99387 {
99388@@ -409,7 +409,7 @@ static const struct nla_policy ipip_policy[IFLA_IPTUN_MAX + 1] = {
99389 [IFLA_IPTUN_PMTUDISC] = { .type = NLA_U8 },
99390 };
99391
99392-static struct rtnl_link_ops ipip_link_ops __read_mostly = {
99393+static struct rtnl_link_ops ipip_link_ops = {
99394 .kind = "ipip",
99395 .maxtype = IFLA_IPTUN_MAX,
99396 .policy = ipip_policy,
99397diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
99398index f95b6f9..2ee2097 100644
99399--- a/net/ipv4/netfilter/arp_tables.c
99400+++ b/net/ipv4/netfilter/arp_tables.c
99401@@ -885,14 +885,14 @@ static int compat_table_info(const struct xt_table_info *info,
99402 #endif
99403
99404 static int get_info(struct net *net, void __user *user,
99405- const int *len, int compat)
99406+ int len, int compat)
99407 {
99408 char name[XT_TABLE_MAXNAMELEN];
99409 struct xt_table *t;
99410 int ret;
99411
99412- if (*len != sizeof(struct arpt_getinfo)) {
99413- duprintf("length %u != %Zu\n", *len,
99414+ if (len != sizeof(struct arpt_getinfo)) {
99415+ duprintf("length %u != %Zu\n", len,
99416 sizeof(struct arpt_getinfo));
99417 return -EINVAL;
99418 }
99419@@ -929,7 +929,7 @@ static int get_info(struct net *net, void __user *user,
99420 info.size = private->size;
99421 strcpy(info.name, name);
99422
99423- if (copy_to_user(user, &info, *len) != 0)
99424+ if (copy_to_user(user, &info, len) != 0)
99425 ret = -EFAULT;
99426 else
99427 ret = 0;
99428@@ -1690,7 +1690,7 @@ static int compat_do_arpt_get_ctl(struct sock *sk, int cmd, void __user *user,
99429
99430 switch (cmd) {
99431 case ARPT_SO_GET_INFO:
99432- ret = get_info(sock_net(sk), user, len, 1);
99433+ ret = get_info(sock_net(sk), user, *len, 1);
99434 break;
99435 case ARPT_SO_GET_ENTRIES:
99436 ret = compat_get_entries(sock_net(sk), user, len);
99437@@ -1735,7 +1735,7 @@ static int do_arpt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len
99438
99439 switch (cmd) {
99440 case ARPT_SO_GET_INFO:
99441- ret = get_info(sock_net(sk), user, len, 0);
99442+ ret = get_info(sock_net(sk), user, *len, 0);
99443 break;
99444
99445 case ARPT_SO_GET_ENTRIES:
99446diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
99447index 99e810f..3711b81 100644
99448--- a/net/ipv4/netfilter/ip_tables.c
99449+++ b/net/ipv4/netfilter/ip_tables.c
99450@@ -1073,14 +1073,14 @@ static int compat_table_info(const struct xt_table_info *info,
99451 #endif
99452
99453 static int get_info(struct net *net, void __user *user,
99454- const int *len, int compat)
99455+ int len, int compat)
99456 {
99457 char name[XT_TABLE_MAXNAMELEN];
99458 struct xt_table *t;
99459 int ret;
99460
99461- if (*len != sizeof(struct ipt_getinfo)) {
99462- duprintf("length %u != %zu\n", *len,
99463+ if (len != sizeof(struct ipt_getinfo)) {
99464+ duprintf("length %u != %zu\n", len,
99465 sizeof(struct ipt_getinfo));
99466 return -EINVAL;
99467 }
99468@@ -1117,7 +1117,7 @@ static int get_info(struct net *net, void __user *user,
99469 info.size = private->size;
99470 strcpy(info.name, name);
99471
99472- if (copy_to_user(user, &info, *len) != 0)
99473+ if (copy_to_user(user, &info, len) != 0)
99474 ret = -EFAULT;
99475 else
99476 ret = 0;
99477@@ -1973,7 +1973,7 @@ compat_do_ipt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
99478
99479 switch (cmd) {
99480 case IPT_SO_GET_INFO:
99481- ret = get_info(sock_net(sk), user, len, 1);
99482+ ret = get_info(sock_net(sk), user, *len, 1);
99483 break;
99484 case IPT_SO_GET_ENTRIES:
99485 ret = compat_get_entries(sock_net(sk), user, len);
99486@@ -2020,7 +2020,7 @@ do_ipt_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
99487
99488 switch (cmd) {
99489 case IPT_SO_GET_INFO:
99490- ret = get_info(sock_net(sk), user, len, 0);
99491+ ret = get_info(sock_net(sk), user, *len, 0);
99492 break;
99493
99494 case IPT_SO_GET_ENTRIES:
99495diff --git a/net/ipv4/netfilter/ipt_CLUSTERIP.c b/net/ipv4/netfilter/ipt_CLUSTERIP.c
99496index 2510c02..cfb34fa 100644
99497--- a/net/ipv4/netfilter/ipt_CLUSTERIP.c
99498+++ b/net/ipv4/netfilter/ipt_CLUSTERIP.c
99499@@ -720,7 +720,7 @@ static int clusterip_net_init(struct net *net)
99500 spin_lock_init(&cn->lock);
99501
99502 #ifdef CONFIG_PROC_FS
99503- cn->procdir = proc_mkdir("ipt_CLUSTERIP", net->proc_net);
99504+ cn->procdir = proc_mkdir_restrict("ipt_CLUSTERIP", net->proc_net);
99505 if (!cn->procdir) {
99506 pr_err("Unable to proc dir entry\n");
99507 return -ENOMEM;
99508diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c
99509index 044a0dd..e0c1971 100644
99510--- a/net/ipv4/ping.c
99511+++ b/net/ipv4/ping.c
99512@@ -59,7 +59,7 @@ struct ping_table {
99513 };
99514
99515 static struct ping_table ping_table;
99516-struct pingv6_ops pingv6_ops;
99517+struct pingv6_ops *pingv6_ops;
99518 EXPORT_SYMBOL_GPL(pingv6_ops);
99519
99520 static u16 ping_port_rover;
99521@@ -348,7 +348,7 @@ static int ping_check_bind_addr(struct sock *sk, struct inet_sock *isk,
99522 return -ENODEV;
99523 }
99524 }
99525- has_addr = pingv6_ops.ipv6_chk_addr(net, &addr->sin6_addr, dev,
99526+ has_addr = pingv6_ops->ipv6_chk_addr(net, &addr->sin6_addr, dev,
99527 scoped);
99528 rcu_read_unlock();
99529
99530@@ -556,7 +556,7 @@ void ping_err(struct sk_buff *skb, int offset, u32 info)
99531 }
99532 #if IS_ENABLED(CONFIG_IPV6)
99533 } else if (skb->protocol == htons(ETH_P_IPV6)) {
99534- harderr = pingv6_ops.icmpv6_err_convert(type, code, &err);
99535+ harderr = pingv6_ops->icmpv6_err_convert(type, code, &err);
99536 #endif
99537 }
99538
99539@@ -574,7 +574,7 @@ void ping_err(struct sk_buff *skb, int offset, u32 info)
99540 info, (u8 *)icmph);
99541 #if IS_ENABLED(CONFIG_IPV6)
99542 } else if (family == AF_INET6) {
99543- pingv6_ops.ipv6_icmp_error(sk, skb, err, 0,
99544+ pingv6_ops->ipv6_icmp_error(sk, skb, err, 0,
99545 info, (u8 *)icmph);
99546 #endif
99547 }
99548@@ -844,6 +844,8 @@ int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
99549 {
99550 struct inet_sock *isk = inet_sk(sk);
99551 int family = sk->sk_family;
99552+ struct sockaddr_in *sin;
99553+ struct sockaddr_in6 *sin6;
99554 struct sk_buff *skb;
99555 int copied, err;
99556
99557@@ -853,12 +855,19 @@ int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
99558 if (flags & MSG_OOB)
99559 goto out;
99560
99561+ if (addr_len) {
99562+ if (family == AF_INET)
99563+ *addr_len = sizeof(*sin);
99564+ else if (family == AF_INET6 && addr_len)
99565+ *addr_len = sizeof(*sin6);
99566+ }
99567+
99568 if (flags & MSG_ERRQUEUE) {
99569 if (family == AF_INET) {
99570 return ip_recv_error(sk, msg, len, addr_len);
99571 #if IS_ENABLED(CONFIG_IPV6)
99572 } else if (family == AF_INET6) {
99573- return pingv6_ops.ipv6_recv_error(sk, msg, len,
99574+ return pingv6_ops->ipv6_recv_error(sk, msg, len,
99575 addr_len);
99576 #endif
99577 }
99578@@ -890,7 +899,6 @@ int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
99579 sin->sin_port = 0 /* skb->h.uh->source */;
99580 sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
99581 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
99582- *addr_len = sizeof(*sin);
99583 }
99584
99585 if (isk->cmsg_flags)
99586@@ -912,14 +920,13 @@ int ping_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
99587 sin6->sin6_scope_id =
99588 ipv6_iface_scope_id(&sin6->sin6_addr,
99589 IP6CB(skb)->iif);
99590- *addr_len = sizeof(*sin6);
99591 }
99592
99593 if (inet6_sk(sk)->rxopt.all)
99594- pingv6_ops.ip6_datagram_recv_common_ctl(sk, msg, skb);
99595+ pingv6_ops->ip6_datagram_recv_common_ctl(sk, msg, skb);
99596 if (skb->protocol == htons(ETH_P_IPV6) &&
99597 inet6_sk(sk)->rxopt.all)
99598- pingv6_ops.ip6_datagram_recv_specific_ctl(sk, msg, skb);
99599+ pingv6_ops->ip6_datagram_recv_specific_ctl(sk, msg, skb);
99600 else if (skb->protocol == htons(ETH_P_IP) && isk->cmsg_flags)
99601 ip_cmsg_recv(msg, skb);
99602 #endif
99603@@ -1111,7 +1118,7 @@ static void ping_v4_format_sock(struct sock *sp, struct seq_file *f,
99604 from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)),
99605 0, sock_i_ino(sp),
99606 atomic_read(&sp->sk_refcnt), sp,
99607- atomic_read(&sp->sk_drops));
99608+ atomic_read_unchecked(&sp->sk_drops));
99609 }
99610
99611 static int ping_v4_seq_show(struct seq_file *seq, void *v)
99612diff --git a/net/ipv4/raw.c b/net/ipv4/raw.c
99613index a9dbe58..46f577f 100644
99614--- a/net/ipv4/raw.c
99615+++ b/net/ipv4/raw.c
99616@@ -311,7 +311,7 @@ static int raw_rcv_skb(struct sock *sk, struct sk_buff *skb)
99617 int raw_rcv(struct sock *sk, struct sk_buff *skb)
99618 {
99619 if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb)) {
99620- atomic_inc(&sk->sk_drops);
99621+ atomic_inc_unchecked(&sk->sk_drops);
99622 kfree_skb(skb);
99623 return NET_RX_DROP;
99624 }
99625@@ -696,6 +696,9 @@ static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
99626 if (flags & MSG_OOB)
99627 goto out;
99628
99629+ if (addr_len)
99630+ *addr_len = sizeof(*sin);
99631+
99632 if (flags & MSG_ERRQUEUE) {
99633 err = ip_recv_error(sk, msg, len, addr_len);
99634 goto out;
99635@@ -723,7 +726,6 @@ static int raw_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
99636 sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
99637 sin->sin_port = 0;
99638 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
99639- *addr_len = sizeof(*sin);
99640 }
99641 if (inet->cmsg_flags)
99642 ip_cmsg_recv(msg, skb);
99643@@ -748,16 +750,20 @@ static int raw_init(struct sock *sk)
99644
99645 static int raw_seticmpfilter(struct sock *sk, char __user *optval, int optlen)
99646 {
99647+ struct icmp_filter filter;
99648+
99649 if (optlen > sizeof(struct icmp_filter))
99650 optlen = sizeof(struct icmp_filter);
99651- if (copy_from_user(&raw_sk(sk)->filter, optval, optlen))
99652+ if (copy_from_user(&filter, optval, optlen))
99653 return -EFAULT;
99654+ raw_sk(sk)->filter = filter;
99655 return 0;
99656 }
99657
99658 static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *optlen)
99659 {
99660 int len, ret = -EFAULT;
99661+ struct icmp_filter filter;
99662
99663 if (get_user(len, optlen))
99664 goto out;
99665@@ -767,8 +773,8 @@ static int raw_geticmpfilter(struct sock *sk, char __user *optval, int __user *o
99666 if (len > sizeof(struct icmp_filter))
99667 len = sizeof(struct icmp_filter);
99668 ret = -EFAULT;
99669- if (put_user(len, optlen) ||
99670- copy_to_user(optval, &raw_sk(sk)->filter, len))
99671+ filter = raw_sk(sk)->filter;
99672+ if (put_user(len, optlen) || len > sizeof filter || copy_to_user(optval, &filter, len))
99673 goto out;
99674 ret = 0;
99675 out: return ret;
99676@@ -997,7 +1003,7 @@ static void raw_sock_seq_show(struct seq_file *seq, struct sock *sp, int i)
99677 0, 0L, 0,
99678 from_kuid_munged(seq_user_ns(seq), sock_i_uid(sp)),
99679 0, sock_i_ino(sp),
99680- atomic_read(&sp->sk_refcnt), sp, atomic_read(&sp->sk_drops));
99681+ atomic_read(&sp->sk_refcnt), sp, atomic_read_unchecked(&sp->sk_drops));
99682 }
99683
99684 static int raw_seq_show(struct seq_file *seq, void *v)
99685diff --git a/net/ipv4/route.c b/net/ipv4/route.c
99686index 5e676be..f6c62f1 100644
99687--- a/net/ipv4/route.c
99688+++ b/net/ipv4/route.c
99689@@ -227,7 +227,7 @@ static const struct seq_operations rt_cache_seq_ops = {
99690
99691 static int rt_cache_seq_open(struct inode *inode, struct file *file)
99692 {
99693- return seq_open(file, &rt_cache_seq_ops);
99694+ return seq_open_restrict(file, &rt_cache_seq_ops);
99695 }
99696
99697 static const struct file_operations rt_cache_seq_fops = {
99698@@ -318,7 +318,7 @@ static const struct seq_operations rt_cpu_seq_ops = {
99699
99700 static int rt_cpu_seq_open(struct inode *inode, struct file *file)
99701 {
99702- return seq_open(file, &rt_cpu_seq_ops);
99703+ return seq_open_restrict(file, &rt_cpu_seq_ops);
99704 }
99705
99706 static const struct file_operations rt_cpu_seq_fops = {
99707@@ -356,7 +356,7 @@ static int rt_acct_proc_show(struct seq_file *m, void *v)
99708
99709 static int rt_acct_proc_open(struct inode *inode, struct file *file)
99710 {
99711- return single_open(file, rt_acct_proc_show, NULL);
99712+ return single_open_restrict(file, rt_acct_proc_show, NULL);
99713 }
99714
99715 static const struct file_operations rt_acct_proc_fops = {
99716@@ -2610,34 +2610,34 @@ static struct ctl_table ipv4_route_flush_table[] = {
99717 .maxlen = sizeof(int),
99718 .mode = 0200,
99719 .proc_handler = ipv4_sysctl_rtcache_flush,
99720+ .extra1 = &init_net,
99721 },
99722 { },
99723 };
99724
99725 static __net_init int sysctl_route_net_init(struct net *net)
99726 {
99727- struct ctl_table *tbl;
99728+ ctl_table_no_const *tbl = NULL;
99729
99730- tbl = ipv4_route_flush_table;
99731 if (!net_eq(net, &init_net)) {
99732- tbl = kmemdup(tbl, sizeof(ipv4_route_flush_table), GFP_KERNEL);
99733+ tbl = kmemdup(ipv4_route_flush_table, sizeof(ipv4_route_flush_table), GFP_KERNEL);
99734 if (tbl == NULL)
99735 goto err_dup;
99736
99737 /* Don't export sysctls to unprivileged users */
99738 if (net->user_ns != &init_user_ns)
99739 tbl[0].procname = NULL;
99740- }
99741- tbl[0].extra1 = net;
99742+ tbl[0].extra1 = net;
99743+ net->ipv4.route_hdr = register_net_sysctl(net, "net/ipv4/route", tbl);
99744+ } else
99745+ net->ipv4.route_hdr = register_net_sysctl(net, "net/ipv4/route", ipv4_route_flush_table);
99746
99747- net->ipv4.route_hdr = register_net_sysctl(net, "net/ipv4/route", tbl);
99748 if (net->ipv4.route_hdr == NULL)
99749 goto err_reg;
99750 return 0;
99751
99752 err_reg:
99753- if (tbl != ipv4_route_flush_table)
99754- kfree(tbl);
99755+ kfree(tbl);
99756 err_dup:
99757 return -ENOMEM;
99758 }
99759@@ -2660,8 +2660,8 @@ static __net_initdata struct pernet_operations sysctl_route_ops = {
99760
99761 static __net_init int rt_genid_init(struct net *net)
99762 {
99763- atomic_set(&net->ipv4.rt_genid, 0);
99764- atomic_set(&net->fnhe_genid, 0);
99765+ atomic_set_unchecked(&net->ipv4.rt_genid, 0);
99766+ atomic_set_unchecked(&net->fnhe_genid, 0);
99767 get_random_bytes(&net->ipv4.dev_addr_genid,
99768 sizeof(net->ipv4.dev_addr_genid));
99769 return 0;
99770diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
99771index 5cde8f2..5f5684e 100644
99772--- a/net/ipv4/sysctl_net_ipv4.c
99773+++ b/net/ipv4/sysctl_net_ipv4.c
99774@@ -60,7 +60,7 @@ static int ipv4_local_port_range(struct ctl_table *table, int write,
99775 container_of(table->data, struct net, ipv4.ip_local_ports.range);
99776 int ret;
99777 int range[2];
99778- struct ctl_table tmp = {
99779+ ctl_table_no_const tmp = {
99780 .data = &range,
99781 .maxlen = sizeof(range),
99782 .mode = table->mode,
99783@@ -118,7 +118,7 @@ static int ipv4_ping_group_range(struct ctl_table *table, int write,
99784 int ret;
99785 gid_t urange[2];
99786 kgid_t low, high;
99787- struct ctl_table tmp = {
99788+ ctl_table_no_const tmp = {
99789 .data = &urange,
99790 .maxlen = sizeof(urange),
99791 .mode = table->mode,
99792@@ -149,7 +149,7 @@ static int proc_tcp_congestion_control(struct ctl_table *ctl, int write,
99793 void __user *buffer, size_t *lenp, loff_t *ppos)
99794 {
99795 char val[TCP_CA_NAME_MAX];
99796- struct ctl_table tbl = {
99797+ ctl_table_no_const tbl = {
99798 .data = val,
99799 .maxlen = TCP_CA_NAME_MAX,
99800 };
99801@@ -168,7 +168,7 @@ static int proc_tcp_available_congestion_control(struct ctl_table *ctl,
99802 void __user *buffer, size_t *lenp,
99803 loff_t *ppos)
99804 {
99805- struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX, };
99806+ ctl_table_no_const tbl = { .maxlen = TCP_CA_BUF_MAX, };
99807 int ret;
99808
99809 tbl.data = kmalloc(tbl.maxlen, GFP_USER);
99810@@ -185,7 +185,7 @@ static int proc_allowed_congestion_control(struct ctl_table *ctl,
99811 void __user *buffer, size_t *lenp,
99812 loff_t *ppos)
99813 {
99814- struct ctl_table tbl = { .maxlen = TCP_CA_BUF_MAX };
99815+ ctl_table_no_const tbl = { .maxlen = TCP_CA_BUF_MAX };
99816 int ret;
99817
99818 tbl.data = kmalloc(tbl.maxlen, GFP_USER);
99819@@ -204,7 +204,7 @@ static int proc_tcp_fastopen_key(struct ctl_table *ctl, int write,
99820 void __user *buffer, size_t *lenp,
99821 loff_t *ppos)
99822 {
99823- struct ctl_table tbl = { .maxlen = (TCP_FASTOPEN_KEY_LENGTH * 2 + 10) };
99824+ ctl_table_no_const tbl = { .maxlen = (TCP_FASTOPEN_KEY_LENGTH * 2 + 10) };
99825 struct tcp_fastopen_context *ctxt;
99826 int ret;
99827 u32 user_key[4]; /* 16 bytes, matching TCP_FASTOPEN_KEY_LENGTH */
99828@@ -438,7 +438,7 @@ static struct ctl_table ipv4_table[] = {
99829 },
99830 {
99831 .procname = "ip_local_reserved_ports",
99832- .data = NULL, /* initialized in sysctl_ipv4_init */
99833+ .data = sysctl_local_reserved_ports,
99834 .maxlen = 65536,
99835 .mode = 0644,
99836 .proc_handler = proc_do_large_bitmap,
99837@@ -843,13 +843,12 @@ static struct ctl_table ipv4_net_table[] = {
99838
99839 static __net_init int ipv4_sysctl_init_net(struct net *net)
99840 {
99841- struct ctl_table *table;
99842+ ctl_table_no_const *table = NULL;
99843
99844- table = ipv4_net_table;
99845 if (!net_eq(net, &init_net)) {
99846 int i;
99847
99848- table = kmemdup(table, sizeof(ipv4_net_table), GFP_KERNEL);
99849+ table = kmemdup(ipv4_net_table, sizeof(ipv4_net_table), GFP_KERNEL);
99850 if (table == NULL)
99851 goto err_alloc;
99852
99853@@ -858,15 +857,17 @@ static __net_init int ipv4_sysctl_init_net(struct net *net)
99854 table[i].data += (void *)net - (void *)&init_net;
99855 }
99856
99857- net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table);
99858+ if (!net_eq(net, &init_net))
99859+ net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", table);
99860+ else
99861+ net->ipv4.ipv4_hdr = register_net_sysctl(net, "net/ipv4", ipv4_net_table);
99862 if (net->ipv4.ipv4_hdr == NULL)
99863 goto err_reg;
99864
99865 return 0;
99866
99867 err_reg:
99868- if (!net_eq(net, &init_net))
99869- kfree(table);
99870+ kfree(table);
99871 err_alloc:
99872 return -ENOMEM;
99873 }
99874@@ -888,16 +889,6 @@ static __net_initdata struct pernet_operations ipv4_sysctl_ops = {
99875 static __init int sysctl_ipv4_init(void)
99876 {
99877 struct ctl_table_header *hdr;
99878- struct ctl_table *i;
99879-
99880- for (i = ipv4_table; i->procname; i++) {
99881- if (strcmp(i->procname, "ip_local_reserved_ports") == 0) {
99882- i->data = sysctl_local_reserved_ports;
99883- break;
99884- }
99885- }
99886- if (!i->procname)
99887- return -EINVAL;
99888
99889 hdr = register_net_sysctl(&init_net, "net/ipv4", ipv4_table);
99890 if (hdr == NULL)
99891diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
99892index 3a26b3b..8bbe4ae 100644
99893--- a/net/ipv4/tcp_input.c
99894+++ b/net/ipv4/tcp_input.c
99895@@ -754,7 +754,7 @@ static void tcp_update_pacing_rate(struct sock *sk)
99896 * without any lock. We want to make sure compiler wont store
99897 * intermediate values in this location.
99898 */
99899- ACCESS_ONCE(sk->sk_pacing_rate) = min_t(u64, rate,
99900+ ACCESS_ONCE_RW(sk->sk_pacing_rate) = min_t(u64, rate,
99901 sk->sk_max_pacing_rate);
99902 }
99903
99904@@ -4478,7 +4478,7 @@ static struct sk_buff *tcp_collapse_one(struct sock *sk, struct sk_buff *skb,
99905 * simplifies code)
99906 */
99907 static void
99908-tcp_collapse(struct sock *sk, struct sk_buff_head *list,
99909+__intentional_overflow(5,6) tcp_collapse(struct sock *sk, struct sk_buff_head *list,
99910 struct sk_buff *head, struct sk_buff *tail,
99911 u32 start, u32 end)
99912 {
99913@@ -5558,6 +5558,7 @@ discard:
99914 tcp_paws_reject(&tp->rx_opt, 0))
99915 goto discard_and_undo;
99916
99917+#ifndef CONFIG_GRKERNSEC_NO_SIMULT_CONNECT
99918 if (th->syn) {
99919 /* We see SYN without ACK. It is attempt of
99920 * simultaneous connect with crossed SYNs.
99921@@ -5608,6 +5609,7 @@ discard:
99922 goto discard;
99923 #endif
99924 }
99925+#endif
99926 /* "fifth, if neither of the SYN or RST bits is set then
99927 * drop the segment and return."
99928 */
99929@@ -5654,7 +5656,7 @@ int tcp_rcv_state_process(struct sock *sk, struct sk_buff *skb,
99930 goto discard;
99931
99932 if (th->syn) {
99933- if (th->fin)
99934+ if (th->fin || th->urg || th->psh)
99935 goto discard;
99936 if (icsk->icsk_af_ops->conn_request(sk, skb) < 0)
99937 return 1;
99938diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
99939index 438f3b9..bc9e1ad 100644
99940--- a/net/ipv4/tcp_ipv4.c
99941+++ b/net/ipv4/tcp_ipv4.c
99942@@ -91,6 +91,10 @@ int sysctl_tcp_low_latency __read_mostly;
99943 EXPORT_SYMBOL(sysctl_tcp_low_latency);
99944
99945
99946+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
99947+extern int grsec_enable_blackhole;
99948+#endif
99949+
99950 #ifdef CONFIG_TCP_MD5SIG
99951 static int tcp_v4_md5_hash_hdr(char *md5_hash, const struct tcp_md5sig_key *key,
99952 __be32 daddr, __be32 saddr, const struct tcphdr *th);
99953@@ -1829,6 +1833,9 @@ int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
99954 return 0;
99955
99956 reset:
99957+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
99958+ if (!grsec_enable_blackhole)
99959+#endif
99960 tcp_v4_send_reset(rsk, skb);
99961 discard:
99962 kfree_skb(skb);
99963@@ -1974,12 +1981,19 @@ int tcp_v4_rcv(struct sk_buff *skb)
99964 TCP_SKB_CB(skb)->sacked = 0;
99965
99966 sk = __inet_lookup_skb(&tcp_hashinfo, skb, th->source, th->dest);
99967- if (!sk)
99968+ if (!sk) {
99969+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
99970+ ret = 1;
99971+#endif
99972 goto no_tcp_socket;
99973-
99974+ }
99975 process:
99976- if (sk->sk_state == TCP_TIME_WAIT)
99977+ if (sk->sk_state == TCP_TIME_WAIT) {
99978+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
99979+ ret = 2;
99980+#endif
99981 goto do_time_wait;
99982+ }
99983
99984 if (unlikely(iph->ttl < inet_sk(sk)->min_ttl)) {
99985 NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP);
99986@@ -2033,6 +2047,10 @@ csum_error:
99987 bad_packet:
99988 TCP_INC_STATS_BH(net, TCP_MIB_INERRS);
99989 } else {
99990+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
99991+ if (!grsec_enable_blackhole || (ret == 1 &&
99992+ (skb->dev->flags & IFF_LOOPBACK)))
99993+#endif
99994 tcp_v4_send_reset(NULL, skb);
99995 }
99996
99997diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
99998index 05c1b15..3e9344b 100644
99999--- a/net/ipv4/tcp_minisocks.c
100000+++ b/net/ipv4/tcp_minisocks.c
100001@@ -27,6 +27,10 @@
100002 #include <net/inet_common.h>
100003 #include <net/xfrm.h>
100004
100005+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100006+extern int grsec_enable_blackhole;
100007+#endif
100008+
100009 int sysctl_tcp_syncookies __read_mostly = 1;
100010 EXPORT_SYMBOL(sysctl_tcp_syncookies);
100011
100012@@ -709,7 +713,10 @@ embryonic_reset:
100013 * avoid becoming vulnerable to outside attack aiming at
100014 * resetting legit local connections.
100015 */
100016- req->rsk_ops->send_reset(sk, skb);
100017+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100018+ if (!grsec_enable_blackhole)
100019+#endif
100020+ req->rsk_ops->send_reset(sk, skb);
100021 } else if (fastopen) { /* received a valid RST pkt */
100022 reqsk_fastopen_remove(sk, req, true);
100023 tcp_reset(sk);
100024diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
100025index 3b66610..bfbe23a 100644
100026--- a/net/ipv4/tcp_probe.c
100027+++ b/net/ipv4/tcp_probe.c
100028@@ -238,7 +238,7 @@ static ssize_t tcpprobe_read(struct file *file, char __user *buf,
100029 if (cnt + width >= len)
100030 break;
100031
100032- if (copy_to_user(buf + cnt, tbuf, width))
100033+ if (width > sizeof tbuf || copy_to_user(buf + cnt, tbuf, width))
100034 return -EFAULT;
100035 cnt += width;
100036 }
100037diff --git a/net/ipv4/tcp_timer.c b/net/ipv4/tcp_timer.c
100038index 286227a..c495a76 100644
100039--- a/net/ipv4/tcp_timer.c
100040+++ b/net/ipv4/tcp_timer.c
100041@@ -22,6 +22,10 @@
100042 #include <linux/gfp.h>
100043 #include <net/tcp.h>
100044
100045+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100046+extern int grsec_lastack_retries;
100047+#endif
100048+
100049 int sysctl_tcp_syn_retries __read_mostly = TCP_SYN_RETRIES;
100050 int sysctl_tcp_synack_retries __read_mostly = TCP_SYNACK_RETRIES;
100051 int sysctl_tcp_keepalive_time __read_mostly = TCP_KEEPALIVE_TIME;
100052@@ -192,6 +196,13 @@ static int tcp_write_timeout(struct sock *sk)
100053 }
100054 }
100055
100056+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100057+ if ((sk->sk_state == TCP_LAST_ACK) &&
100058+ (grsec_lastack_retries > 0) &&
100059+ (grsec_lastack_retries < retry_until))
100060+ retry_until = grsec_lastack_retries;
100061+#endif
100062+
100063 if (retransmits_timed_out(sk, retry_until,
100064 syn_set ? 0 : icsk->icsk_user_timeout, syn_set)) {
100065 /* Has it gone just too far? */
100066diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
100067index 54a5fe9..78fea00 100644
100068--- a/net/ipv4/udp.c
100069+++ b/net/ipv4/udp.c
100070@@ -87,6 +87,7 @@
100071 #include <linux/types.h>
100072 #include <linux/fcntl.h>
100073 #include <linux/module.h>
100074+#include <linux/security.h>
100075 #include <linux/socket.h>
100076 #include <linux/sockios.h>
100077 #include <linux/igmp.h>
100078@@ -113,6 +114,10 @@
100079 #include <net/busy_poll.h>
100080 #include "udp_impl.h"
100081
100082+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100083+extern int grsec_enable_blackhole;
100084+#endif
100085+
100086 struct udp_table udp_table __read_mostly;
100087 EXPORT_SYMBOL(udp_table);
100088
100089@@ -615,6 +620,9 @@ found:
100090 return s;
100091 }
100092
100093+extern int gr_search_udp_recvmsg(struct sock *sk, const struct sk_buff *skb);
100094+extern int gr_search_udp_sendmsg(struct sock *sk, struct sockaddr_in *addr);
100095+
100096 /*
100097 * This routine is called by the ICMP module when it gets some
100098 * sort of error condition. If err < 0 then the socket should
100099@@ -914,9 +922,18 @@ int udp_sendmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
100100 dport = usin->sin_port;
100101 if (dport == 0)
100102 return -EINVAL;
100103+
100104+ err = gr_search_udp_sendmsg(sk, usin);
100105+ if (err)
100106+ return err;
100107 } else {
100108 if (sk->sk_state != TCP_ESTABLISHED)
100109 return -EDESTADDRREQ;
100110+
100111+ err = gr_search_udp_sendmsg(sk, NULL);
100112+ if (err)
100113+ return err;
100114+
100115 daddr = inet->inet_daddr;
100116 dport = inet->inet_dport;
100117 /* Open fast path for connected socket.
100118@@ -1164,7 +1181,7 @@ static unsigned int first_packet_length(struct sock *sk)
100119 IS_UDPLITE(sk));
100120 UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS,
100121 IS_UDPLITE(sk));
100122- atomic_inc(&sk->sk_drops);
100123+ atomic_inc_unchecked(&sk->sk_drops);
100124 __skb_unlink(skb, rcvq);
100125 __skb_queue_tail(&list_kill, skb);
100126 }
100127@@ -1235,6 +1252,12 @@ int udp_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *msg,
100128 int is_udplite = IS_UDPLITE(sk);
100129 bool slow;
100130
100131+ /*
100132+ * Check any passed addresses
100133+ */
100134+ if (addr_len)
100135+ *addr_len = sizeof(*sin);
100136+
100137 if (flags & MSG_ERRQUEUE)
100138 return ip_recv_error(sk, msg, len, addr_len);
100139
100140@@ -1244,6 +1267,10 @@ try_again:
100141 if (!skb)
100142 goto out;
100143
100144+ err = gr_search_udp_recvmsg(sk, skb);
100145+ if (err)
100146+ goto out_free;
100147+
100148 ulen = skb->len - sizeof(struct udphdr);
100149 copied = len;
100150 if (copied > ulen)
100151@@ -1277,7 +1304,7 @@ try_again:
100152 if (unlikely(err)) {
100153 trace_kfree_skb(skb, udp_recvmsg);
100154 if (!peeked) {
100155- atomic_inc(&sk->sk_drops);
100156+ atomic_inc_unchecked(&sk->sk_drops);
100157 UDP_INC_STATS_USER(sock_net(sk),
100158 UDP_MIB_INERRORS, is_udplite);
100159 }
100160@@ -1296,7 +1323,6 @@ try_again:
100161 sin->sin_port = udp_hdr(skb)->source;
100162 sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
100163 memset(sin->sin_zero, 0, sizeof(sin->sin_zero));
100164- *addr_len = sizeof(*sin);
100165 }
100166 if (inet->cmsg_flags)
100167 ip_cmsg_recv(msg, skb);
100168@@ -1567,7 +1593,7 @@ csum_error:
100169 UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite);
100170 drop:
100171 UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
100172- atomic_inc(&sk->sk_drops);
100173+ atomic_inc_unchecked(&sk->sk_drops);
100174 kfree_skb(skb);
100175 return -1;
100176 }
100177@@ -1586,7 +1612,7 @@ static void flush_stack(struct sock **stack, unsigned int count,
100178 skb1 = (i == final) ? skb : skb_clone(skb, GFP_ATOMIC);
100179
100180 if (!skb1) {
100181- atomic_inc(&sk->sk_drops);
100182+ atomic_inc_unchecked(&sk->sk_drops);
100183 UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_RCVBUFERRORS,
100184 IS_UDPLITE(sk));
100185 UDP_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS,
100186@@ -1787,6 +1813,9 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
100187 goto csum_error;
100188
100189 UDP_INC_STATS_BH(net, UDP_MIB_NOPORTS, proto == IPPROTO_UDPLITE);
100190+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100191+ if (!grsec_enable_blackhole || (skb->dev->flags & IFF_LOOPBACK))
100192+#endif
100193 icmp_send(skb, ICMP_DEST_UNREACH, ICMP_PORT_UNREACH, 0);
100194
100195 /*
100196@@ -2355,7 +2384,7 @@ static void udp4_format_sock(struct sock *sp, struct seq_file *f,
100197 from_kuid_munged(seq_user_ns(f), sock_i_uid(sp)),
100198 0, sock_i_ino(sp),
100199 atomic_read(&sp->sk_refcnt), sp,
100200- atomic_read(&sp->sk_drops));
100201+ atomic_read_unchecked(&sp->sk_drops));
100202 }
100203
100204 int udp4_seq_show(struct seq_file *seq, void *v)
100205diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
100206index 6156f68..d6ab46d 100644
100207--- a/net/ipv4/xfrm4_policy.c
100208+++ b/net/ipv4/xfrm4_policy.c
100209@@ -186,11 +186,11 @@ _decode_session4(struct sk_buff *skb, struct flowi *fl, int reverse)
100210 fl4->flowi4_tos = iph->tos;
100211 }
100212
100213-static inline int xfrm4_garbage_collect(struct dst_ops *ops)
100214+static int xfrm4_garbage_collect(struct dst_ops *ops)
100215 {
100216 struct net *net = container_of(ops, struct net, xfrm.xfrm4_dst_ops);
100217
100218- xfrm4_policy_afinfo.garbage_collect(net);
100219+ xfrm_garbage_collect_deferred(net);
100220 return (dst_entries_get_slow(ops) > ops->gc_thresh * 2);
100221 }
100222
100223@@ -269,19 +269,18 @@ static struct ctl_table xfrm4_policy_table[] = {
100224
100225 static int __net_init xfrm4_net_init(struct net *net)
100226 {
100227- struct ctl_table *table;
100228+ ctl_table_no_const *table = NULL;
100229 struct ctl_table_header *hdr;
100230
100231- table = xfrm4_policy_table;
100232 if (!net_eq(net, &init_net)) {
100233- table = kmemdup(table, sizeof(xfrm4_policy_table), GFP_KERNEL);
100234+ table = kmemdup(xfrm4_policy_table, sizeof(xfrm4_policy_table), GFP_KERNEL);
100235 if (!table)
100236 goto err_alloc;
100237
100238 table[0].data = &net->xfrm.xfrm4_dst_ops.gc_thresh;
100239- }
100240-
100241- hdr = register_net_sysctl(net, "net/ipv4", table);
100242+ hdr = register_net_sysctl(net, "net/ipv4", table);
100243+ } else
100244+ hdr = register_net_sysctl(net, "net/ipv4", xfrm4_policy_table);
100245 if (!hdr)
100246 goto err_reg;
100247
100248@@ -289,8 +288,7 @@ static int __net_init xfrm4_net_init(struct net *net)
100249 return 0;
100250
100251 err_reg:
100252- if (!net_eq(net, &init_net))
100253- kfree(table);
100254+ kfree(table);
100255 err_alloc:
100256 return -ENOMEM;
100257 }
100258diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
100259index 6c7fa08..285086c 100644
100260--- a/net/ipv6/addrconf.c
100261+++ b/net/ipv6/addrconf.c
100262@@ -598,7 +598,7 @@ static int inet6_netconf_dump_devconf(struct sk_buff *skb,
100263 idx = 0;
100264 head = &net->dev_index_head[h];
100265 rcu_read_lock();
100266- cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^
100267+ cb->seq = atomic_read_unchecked(&net->ipv6.dev_addr_genid) ^
100268 net->dev_base_seq;
100269 hlist_for_each_entry_rcu(dev, head, index_hlist) {
100270 if (idx < s_idx)
100271@@ -2395,7 +2395,7 @@ int addrconf_set_dstaddr(struct net *net, void __user *arg)
100272 p.iph.ihl = 5;
100273 p.iph.protocol = IPPROTO_IPV6;
100274 p.iph.ttl = 64;
100275- ifr.ifr_ifru.ifru_data = (__force void __user *)&p;
100276+ ifr.ifr_ifru.ifru_data = (void __force_user *)&p;
100277
100278 if (ops->ndo_do_ioctl) {
100279 mm_segment_t oldfs = get_fs();
100280@@ -4146,7 +4146,7 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
100281 s_ip_idx = ip_idx = cb->args[2];
100282
100283 rcu_read_lock();
100284- cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^ net->dev_base_seq;
100285+ cb->seq = atomic_read_unchecked(&net->ipv6.dev_addr_genid) ^ net->dev_base_seq;
100286 for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
100287 idx = 0;
100288 head = &net->dev_index_head[h];
100289@@ -4758,7 +4758,7 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
100290 dst_free(&ifp->rt->dst);
100291 break;
100292 }
100293- atomic_inc(&net->ipv6.dev_addr_genid);
100294+ atomic_inc_unchecked(&net->ipv6.dev_addr_genid);
100295 rt_genid_bump_ipv6(net);
100296 }
100297
100298@@ -4779,7 +4779,7 @@ int addrconf_sysctl_forward(struct ctl_table *ctl, int write,
100299 int *valp = ctl->data;
100300 int val = *valp;
100301 loff_t pos = *ppos;
100302- struct ctl_table lctl;
100303+ ctl_table_no_const lctl;
100304 int ret;
100305
100306 /*
100307@@ -4864,7 +4864,7 @@ int addrconf_sysctl_disable(struct ctl_table *ctl, int write,
100308 int *valp = ctl->data;
100309 int val = *valp;
100310 loff_t pos = *ppos;
100311- struct ctl_table lctl;
100312+ ctl_table_no_const lctl;
100313 int ret;
100314
100315 /*
100316diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
100317index d935889..2f64330 100644
100318--- a/net/ipv6/af_inet6.c
100319+++ b/net/ipv6/af_inet6.c
100320@@ -776,7 +776,7 @@ static int __net_init inet6_net_init(struct net *net)
100321 net->ipv6.sysctl.bindv6only = 0;
100322 net->ipv6.sysctl.icmpv6_time = 1*HZ;
100323 net->ipv6.sysctl.flowlabel_consistency = 1;
100324- atomic_set(&net->ipv6.rt_genid, 0);
100325+ atomic_set_unchecked(&net->ipv6.rt_genid, 0);
100326
100327 err = ipv6_init_mibs(net);
100328 if (err)
100329diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
100330index c3bf2d2..1f00573 100644
100331--- a/net/ipv6/datagram.c
100332+++ b/net/ipv6/datagram.c
100333@@ -938,5 +938,5 @@ void ip6_dgram_sock_seq_show(struct seq_file *seq, struct sock *sp,
100334 0,
100335 sock_i_ino(sp),
100336 atomic_read(&sp->sk_refcnt), sp,
100337- atomic_read(&sp->sk_drops));
100338+ atomic_read_unchecked(&sp->sk_drops));
100339 }
100340diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
100341index 7b32652..0bc348b 100644
100342--- a/net/ipv6/icmp.c
100343+++ b/net/ipv6/icmp.c
100344@@ -1005,7 +1005,7 @@ static struct ctl_table ipv6_icmp_table_template[] = {
100345
100346 struct ctl_table * __net_init ipv6_icmp_sysctl_init(struct net *net)
100347 {
100348- struct ctl_table *table;
100349+ ctl_table_no_const *table;
100350
100351 table = kmemdup(ipv6_icmp_table_template,
100352 sizeof(ipv6_icmp_table_template),
100353diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
100354index 9d92146..d986c6a 100644
100355--- a/net/ipv6/ip6_gre.c
100356+++ b/net/ipv6/ip6_gre.c
100357@@ -71,7 +71,7 @@ struct ip6gre_net {
100358 struct net_device *fb_tunnel_dev;
100359 };
100360
100361-static struct rtnl_link_ops ip6gre_link_ops __read_mostly;
100362+static struct rtnl_link_ops ip6gre_link_ops;
100363 static int ip6gre_tunnel_init(struct net_device *dev);
100364 static void ip6gre_tunnel_setup(struct net_device *dev);
100365 static void ip6gre_tunnel_link(struct ip6gre_net *ign, struct ip6_tnl *t);
100366@@ -1291,7 +1291,7 @@ static void ip6gre_fb_tunnel_init(struct net_device *dev)
100367 }
100368
100369
100370-static struct inet6_protocol ip6gre_protocol __read_mostly = {
100371+static struct inet6_protocol ip6gre_protocol = {
100372 .handler = ip6gre_rcv,
100373 .err_handler = ip6gre_err,
100374 .flags = INET6_PROTO_NOPOLICY|INET6_PROTO_FINAL,
100375@@ -1636,7 +1636,7 @@ static const struct nla_policy ip6gre_policy[IFLA_GRE_MAX + 1] = {
100376 [IFLA_GRE_FLAGS] = { .type = NLA_U32 },
100377 };
100378
100379-static struct rtnl_link_ops ip6gre_link_ops __read_mostly = {
100380+static struct rtnl_link_ops ip6gre_link_ops = {
100381 .kind = "ip6gre",
100382 .maxtype = IFLA_GRE_MAX,
100383 .policy = ip6gre_policy,
100384@@ -1650,7 +1650,7 @@ static struct rtnl_link_ops ip6gre_link_ops __read_mostly = {
100385 .fill_info = ip6gre_fill_info,
100386 };
100387
100388-static struct rtnl_link_ops ip6gre_tap_ops __read_mostly = {
100389+static struct rtnl_link_ops ip6gre_tap_ops = {
100390 .kind = "ip6gretap",
100391 .maxtype = IFLA_GRE_MAX,
100392 .policy = ip6gre_policy,
100393diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
100394index afa0824..04ba530 100644
100395--- a/net/ipv6/ip6_tunnel.c
100396+++ b/net/ipv6/ip6_tunnel.c
100397@@ -86,7 +86,7 @@ static u32 HASH(const struct in6_addr *addr1, const struct in6_addr *addr2)
100398
100399 static int ip6_tnl_dev_init(struct net_device *dev);
100400 static void ip6_tnl_dev_setup(struct net_device *dev);
100401-static struct rtnl_link_ops ip6_link_ops __read_mostly;
100402+static struct rtnl_link_ops ip6_link_ops;
100403
100404 static int ip6_tnl_net_id __read_mostly;
100405 struct ip6_tnl_net {
100406@@ -1708,7 +1708,7 @@ static const struct nla_policy ip6_tnl_policy[IFLA_IPTUN_MAX + 1] = {
100407 [IFLA_IPTUN_PROTO] = { .type = NLA_U8 },
100408 };
100409
100410-static struct rtnl_link_ops ip6_link_ops __read_mostly = {
100411+static struct rtnl_link_ops ip6_link_ops = {
100412 .kind = "ip6tnl",
100413 .maxtype = IFLA_IPTUN_MAX,
100414 .policy = ip6_tnl_policy,
100415diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
100416index 6cc9f93..6e5bb7c 100644
100417--- a/net/ipv6/ip6_vti.c
100418+++ b/net/ipv6/ip6_vti.c
100419@@ -62,7 +62,7 @@ static u32 HASH(const struct in6_addr *addr1, const struct in6_addr *addr2)
100420
100421 static int vti6_dev_init(struct net_device *dev);
100422 static void vti6_dev_setup(struct net_device *dev);
100423-static struct rtnl_link_ops vti6_link_ops __read_mostly;
100424+static struct rtnl_link_ops vti6_link_ops;
100425
100426 static int vti6_net_id __read_mostly;
100427 struct vti6_net {
100428@@ -980,7 +980,7 @@ static const struct nla_policy vti6_policy[IFLA_VTI_MAX + 1] = {
100429 [IFLA_VTI_OKEY] = { .type = NLA_U32 },
100430 };
100431
100432-static struct rtnl_link_ops vti6_link_ops __read_mostly = {
100433+static struct rtnl_link_ops vti6_link_ops = {
100434 .kind = "vti6",
100435 .maxtype = IFLA_VTI_MAX,
100436 .policy = vti6_policy,
100437diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
100438index edb58af..78de133 100644
100439--- a/net/ipv6/ipv6_sockglue.c
100440+++ b/net/ipv6/ipv6_sockglue.c
100441@@ -991,7 +991,7 @@ static int do_ipv6_getsockopt(struct sock *sk, int level, int optname,
100442 if (sk->sk_type != SOCK_STREAM)
100443 return -ENOPROTOOPT;
100444
100445- msg.msg_control = optval;
100446+ msg.msg_control = (void __force_kernel *)optval;
100447 msg.msg_controllen = len;
100448 msg.msg_flags = flags;
100449
100450diff --git a/net/ipv6/netfilter/ip6_tables.c b/net/ipv6/netfilter/ip6_tables.c
100451index e080fbb..412b3cf 100644
100452--- a/net/ipv6/netfilter/ip6_tables.c
100453+++ b/net/ipv6/netfilter/ip6_tables.c
100454@@ -1083,14 +1083,14 @@ static int compat_table_info(const struct xt_table_info *info,
100455 #endif
100456
100457 static int get_info(struct net *net, void __user *user,
100458- const int *len, int compat)
100459+ int len, int compat)
100460 {
100461 char name[XT_TABLE_MAXNAMELEN];
100462 struct xt_table *t;
100463 int ret;
100464
100465- if (*len != sizeof(struct ip6t_getinfo)) {
100466- duprintf("length %u != %zu\n", *len,
100467+ if (len != sizeof(struct ip6t_getinfo)) {
100468+ duprintf("length %u != %zu\n", len,
100469 sizeof(struct ip6t_getinfo));
100470 return -EINVAL;
100471 }
100472@@ -1127,7 +1127,7 @@ static int get_info(struct net *net, void __user *user,
100473 info.size = private->size;
100474 strcpy(info.name, name);
100475
100476- if (copy_to_user(user, &info, *len) != 0)
100477+ if (copy_to_user(user, &info, len) != 0)
100478 ret = -EFAULT;
100479 else
100480 ret = 0;
100481@@ -1983,7 +1983,7 @@ compat_do_ip6t_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
100482
100483 switch (cmd) {
100484 case IP6T_SO_GET_INFO:
100485- ret = get_info(sock_net(sk), user, len, 1);
100486+ ret = get_info(sock_net(sk), user, *len, 1);
100487 break;
100488 case IP6T_SO_GET_ENTRIES:
100489 ret = compat_get_entries(sock_net(sk), user, len);
100490@@ -2030,7 +2030,7 @@ do_ip6t_get_ctl(struct sock *sk, int cmd, void __user *user, int *len)
100491
100492 switch (cmd) {
100493 case IP6T_SO_GET_INFO:
100494- ret = get_info(sock_net(sk), user, len, 0);
100495+ ret = get_info(sock_net(sk), user, *len, 0);
100496 break;
100497
100498 case IP6T_SO_GET_ENTRIES:
100499diff --git a/net/ipv6/netfilter/nf_conntrack_reasm.c b/net/ipv6/netfilter/nf_conntrack_reasm.c
100500index 767ab8d..c5ec70a 100644
100501--- a/net/ipv6/netfilter/nf_conntrack_reasm.c
100502+++ b/net/ipv6/netfilter/nf_conntrack_reasm.c
100503@@ -90,12 +90,11 @@ static struct ctl_table nf_ct_frag6_sysctl_table[] = {
100504
100505 static int nf_ct_frag6_sysctl_register(struct net *net)
100506 {
100507- struct ctl_table *table;
100508+ ctl_table_no_const *table = NULL;
100509 struct ctl_table_header *hdr;
100510
100511- table = nf_ct_frag6_sysctl_table;
100512 if (!net_eq(net, &init_net)) {
100513- table = kmemdup(table, sizeof(nf_ct_frag6_sysctl_table),
100514+ table = kmemdup(nf_ct_frag6_sysctl_table, sizeof(nf_ct_frag6_sysctl_table),
100515 GFP_KERNEL);
100516 if (table == NULL)
100517 goto err_alloc;
100518@@ -103,9 +102,9 @@ static int nf_ct_frag6_sysctl_register(struct net *net)
100519 table[0].data = &net->nf_frag.frags.timeout;
100520 table[1].data = &net->nf_frag.frags.low_thresh;
100521 table[2].data = &net->nf_frag.frags.high_thresh;
100522- }
100523-
100524- hdr = register_net_sysctl(net, "net/netfilter", table);
100525+ hdr = register_net_sysctl(net, "net/netfilter", table);
100526+ } else
100527+ hdr = register_net_sysctl(net, "net/netfilter", nf_ct_frag6_sysctl_table);
100528 if (hdr == NULL)
100529 goto err_reg;
100530
100531@@ -113,8 +112,7 @@ static int nf_ct_frag6_sysctl_register(struct net *net)
100532 return 0;
100533
100534 err_reg:
100535- if (!net_eq(net, &init_net))
100536- kfree(table);
100537+ kfree(table);
100538 err_alloc:
100539 return -ENOMEM;
100540 }
100541diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c
100542index 56596ce..c734618 100644
100543--- a/net/ipv6/output_core.c
100544+++ b/net/ipv6/output_core.c
100545@@ -10,7 +10,7 @@
100546
100547 void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
100548 {
100549- static atomic_t ipv6_fragmentation_id;
100550+ static atomic_unchecked_t ipv6_fragmentation_id;
100551 struct in6_addr addr;
100552 int ident;
100553
100554@@ -26,7 +26,7 @@ void ipv6_select_ident(struct frag_hdr *fhdr, struct rt6_info *rt)
100555 return;
100556 }
100557 #endif
100558- ident = atomic_inc_return(&ipv6_fragmentation_id);
100559+ ident = atomic_inc_return_unchecked(&ipv6_fragmentation_id);
100560
100561 addr = rt->rt6i_dst.addr;
100562 addr.s6_addr32[0] ^= (__force __be32)ident;
100563diff --git a/net/ipv6/ping.c b/net/ipv6/ping.c
100564index bda7429..469b26b 100644
100565--- a/net/ipv6/ping.c
100566+++ b/net/ipv6/ping.c
100567@@ -246,6 +246,24 @@ static struct pernet_operations ping_v6_net_ops = {
100568 };
100569 #endif
100570
100571+static struct pingv6_ops real_pingv6_ops = {
100572+ .ipv6_recv_error = ipv6_recv_error,
100573+ .ip6_datagram_recv_common_ctl = ip6_datagram_recv_common_ctl,
100574+ .ip6_datagram_recv_specific_ctl = ip6_datagram_recv_specific_ctl,
100575+ .icmpv6_err_convert = icmpv6_err_convert,
100576+ .ipv6_icmp_error = ipv6_icmp_error,
100577+ .ipv6_chk_addr = ipv6_chk_addr,
100578+};
100579+
100580+static struct pingv6_ops dummy_pingv6_ops = {
100581+ .ipv6_recv_error = dummy_ipv6_recv_error,
100582+ .ip6_datagram_recv_common_ctl = dummy_ip6_datagram_recv_ctl,
100583+ .ip6_datagram_recv_specific_ctl = dummy_ip6_datagram_recv_ctl,
100584+ .icmpv6_err_convert = dummy_icmpv6_err_convert,
100585+ .ipv6_icmp_error = dummy_ipv6_icmp_error,
100586+ .ipv6_chk_addr = dummy_ipv6_chk_addr,
100587+};
100588+
100589 int __init pingv6_init(void)
100590 {
100591 #ifdef CONFIG_PROC_FS
100592@@ -253,13 +271,7 @@ int __init pingv6_init(void)
100593 if (ret)
100594 return ret;
100595 #endif
100596- pingv6_ops.ipv6_recv_error = ipv6_recv_error;
100597- pingv6_ops.ip6_datagram_recv_common_ctl = ip6_datagram_recv_common_ctl;
100598- pingv6_ops.ip6_datagram_recv_specific_ctl =
100599- ip6_datagram_recv_specific_ctl;
100600- pingv6_ops.icmpv6_err_convert = icmpv6_err_convert;
100601- pingv6_ops.ipv6_icmp_error = ipv6_icmp_error;
100602- pingv6_ops.ipv6_chk_addr = ipv6_chk_addr;
100603+ pingv6_ops = &real_pingv6_ops;
100604 return inet6_register_protosw(&pingv6_protosw);
100605 }
100606
100607@@ -268,14 +280,9 @@ int __init pingv6_init(void)
100608 */
100609 void pingv6_exit(void)
100610 {
100611- pingv6_ops.ipv6_recv_error = dummy_ipv6_recv_error;
100612- pingv6_ops.ip6_datagram_recv_common_ctl = dummy_ip6_datagram_recv_ctl;
100613- pingv6_ops.ip6_datagram_recv_specific_ctl = dummy_ip6_datagram_recv_ctl;
100614- pingv6_ops.icmpv6_err_convert = dummy_icmpv6_err_convert;
100615- pingv6_ops.ipv6_icmp_error = dummy_ipv6_icmp_error;
100616- pingv6_ops.ipv6_chk_addr = dummy_ipv6_chk_addr;
100617 #ifdef CONFIG_PROC_FS
100618 unregister_pernet_subsys(&ping_v6_net_ops);
100619 #endif
100620+ pingv6_ops = &dummy_pingv6_ops;
100621 inet6_unregister_protosw(&pingv6_protosw);
100622 }
100623diff --git a/net/ipv6/proc.c b/net/ipv6/proc.c
100624index 091d066..139d410 100644
100625--- a/net/ipv6/proc.c
100626+++ b/net/ipv6/proc.c
100627@@ -309,7 +309,7 @@ static int __net_init ipv6_proc_init_net(struct net *net)
100628 if (!proc_create("snmp6", S_IRUGO, net->proc_net, &snmp6_seq_fops))
100629 goto proc_snmp6_fail;
100630
100631- net->mib.proc_net_devsnmp6 = proc_mkdir("dev_snmp6", net->proc_net);
100632+ net->mib.proc_net_devsnmp6 = proc_mkdir_restrict("dev_snmp6", net->proc_net);
100633 if (!net->mib.proc_net_devsnmp6)
100634 goto proc_dev_snmp6_fail;
100635 return 0;
100636diff --git a/net/ipv6/raw.c b/net/ipv6/raw.c
100637index 1f29996..46fe0c7 100644
100638--- a/net/ipv6/raw.c
100639+++ b/net/ipv6/raw.c
100640@@ -388,7 +388,7 @@ static inline int rawv6_rcv_skb(struct sock *sk, struct sk_buff *skb)
100641 {
100642 if ((raw6_sk(sk)->checksum || rcu_access_pointer(sk->sk_filter)) &&
100643 skb_checksum_complete(skb)) {
100644- atomic_inc(&sk->sk_drops);
100645+ atomic_inc_unchecked(&sk->sk_drops);
100646 kfree_skb(skb);
100647 return NET_RX_DROP;
100648 }
100649@@ -416,7 +416,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
100650 struct raw6_sock *rp = raw6_sk(sk);
100651
100652 if (!xfrm6_policy_check(sk, XFRM_POLICY_IN, skb)) {
100653- atomic_inc(&sk->sk_drops);
100654+ atomic_inc_unchecked(&sk->sk_drops);
100655 kfree_skb(skb);
100656 return NET_RX_DROP;
100657 }
100658@@ -440,7 +440,7 @@ int rawv6_rcv(struct sock *sk, struct sk_buff *skb)
100659
100660 if (inet->hdrincl) {
100661 if (skb_checksum_complete(skb)) {
100662- atomic_inc(&sk->sk_drops);
100663+ atomic_inc_unchecked(&sk->sk_drops);
100664 kfree_skb(skb);
100665 return NET_RX_DROP;
100666 }
100667@@ -469,6 +469,9 @@ static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
100668 if (flags & MSG_OOB)
100669 return -EOPNOTSUPP;
100670
100671+ if (addr_len)
100672+ *addr_len=sizeof(*sin6);
100673+
100674 if (flags & MSG_ERRQUEUE)
100675 return ipv6_recv_error(sk, msg, len, addr_len);
100676
100677@@ -507,7 +510,6 @@ static int rawv6_recvmsg(struct kiocb *iocb, struct sock *sk,
100678 sin6->sin6_flowinfo = 0;
100679 sin6->sin6_scope_id = ipv6_iface_scope_id(&sin6->sin6_addr,
100680 IP6CB(skb)->iif);
100681- *addr_len = sizeof(*sin6);
100682 }
100683
100684 sock_recv_ts_and_drops(msg, sk, skb);
100685@@ -610,7 +612,7 @@ out:
100686 return err;
100687 }
100688
100689-static int rawv6_send_hdrinc(struct sock *sk, void *from, int length,
100690+static int rawv6_send_hdrinc(struct sock *sk, void *from, unsigned int length,
100691 struct flowi6 *fl6, struct dst_entry **dstp,
100692 unsigned int flags)
100693 {
100694@@ -922,12 +924,15 @@ do_confirm:
100695 static int rawv6_seticmpfilter(struct sock *sk, int level, int optname,
100696 char __user *optval, int optlen)
100697 {
100698+ struct icmp6_filter filter;
100699+
100700 switch (optname) {
100701 case ICMPV6_FILTER:
100702 if (optlen > sizeof(struct icmp6_filter))
100703 optlen = sizeof(struct icmp6_filter);
100704- if (copy_from_user(&raw6_sk(sk)->filter, optval, optlen))
100705+ if (copy_from_user(&filter, optval, optlen))
100706 return -EFAULT;
100707+ raw6_sk(sk)->filter = filter;
100708 return 0;
100709 default:
100710 return -ENOPROTOOPT;
100711@@ -940,6 +945,7 @@ static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
100712 char __user *optval, int __user *optlen)
100713 {
100714 int len;
100715+ struct icmp6_filter filter;
100716
100717 switch (optname) {
100718 case ICMPV6_FILTER:
100719@@ -951,7 +957,8 @@ static int rawv6_geticmpfilter(struct sock *sk, int level, int optname,
100720 len = sizeof(struct icmp6_filter);
100721 if (put_user(len, optlen))
100722 return -EFAULT;
100723- if (copy_to_user(optval, &raw6_sk(sk)->filter, len))
100724+ filter = raw6_sk(sk)->filter;
100725+ if (len > sizeof filter || copy_to_user(optval, &filter, len))
100726 return -EFAULT;
100727 return 0;
100728 default:
100729diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
100730index cc85a9b..526a133 100644
100731--- a/net/ipv6/reassembly.c
100732+++ b/net/ipv6/reassembly.c
100733@@ -626,12 +626,11 @@ static struct ctl_table ip6_frags_ctl_table[] = {
100734
100735 static int __net_init ip6_frags_ns_sysctl_register(struct net *net)
100736 {
100737- struct ctl_table *table;
100738+ ctl_table_no_const *table = NULL;
100739 struct ctl_table_header *hdr;
100740
100741- table = ip6_frags_ns_ctl_table;
100742 if (!net_eq(net, &init_net)) {
100743- table = kmemdup(table, sizeof(ip6_frags_ns_ctl_table), GFP_KERNEL);
100744+ table = kmemdup(ip6_frags_ns_ctl_table, sizeof(ip6_frags_ns_ctl_table), GFP_KERNEL);
100745 if (table == NULL)
100746 goto err_alloc;
100747
100748@@ -642,9 +641,10 @@ static int __net_init ip6_frags_ns_sysctl_register(struct net *net)
100749 /* Don't export sysctls to unprivileged users */
100750 if (net->user_ns != &init_user_ns)
100751 table[0].procname = NULL;
100752- }
100753+ hdr = register_net_sysctl(net, "net/ipv6", table);
100754+ } else
100755+ hdr = register_net_sysctl(net, "net/ipv6", ip6_frags_ns_ctl_table);
100756
100757- hdr = register_net_sysctl(net, "net/ipv6", table);
100758 if (hdr == NULL)
100759 goto err_reg;
100760
100761@@ -652,8 +652,7 @@ static int __net_init ip6_frags_ns_sysctl_register(struct net *net)
100762 return 0;
100763
100764 err_reg:
100765- if (!net_eq(net, &init_net))
100766- kfree(table);
100767+ kfree(table);
100768 err_alloc:
100769 return -ENOMEM;
100770 }
100771diff --git a/net/ipv6/route.c b/net/ipv6/route.c
100772index 6ebdb7b6..f225ab1 100644
100773--- a/net/ipv6/route.c
100774+++ b/net/ipv6/route.c
100775@@ -2971,7 +2971,7 @@ struct ctl_table ipv6_route_table_template[] = {
100776
100777 struct ctl_table * __net_init ipv6_route_sysctl_init(struct net *net)
100778 {
100779- struct ctl_table *table;
100780+ ctl_table_no_const *table;
100781
100782 table = kmemdup(ipv6_route_table_template,
100783 sizeof(ipv6_route_table_template),
100784diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
100785index 4f40817..54dcbef 100644
100786--- a/net/ipv6/sit.c
100787+++ b/net/ipv6/sit.c
100788@@ -74,7 +74,7 @@ static void ipip6_tunnel_setup(struct net_device *dev);
100789 static void ipip6_dev_free(struct net_device *dev);
100790 static bool check_6rd(struct ip_tunnel *tunnel, const struct in6_addr *v6dst,
100791 __be32 *v4dst);
100792-static struct rtnl_link_ops sit_link_ops __read_mostly;
100793+static struct rtnl_link_ops sit_link_ops;
100794
100795 static int sit_net_id __read_mostly;
100796 struct sit_net {
100797@@ -1661,7 +1661,7 @@ static void ipip6_dellink(struct net_device *dev, struct list_head *head)
100798 unregister_netdevice_queue(dev, head);
100799 }
100800
100801-static struct rtnl_link_ops sit_link_ops __read_mostly = {
100802+static struct rtnl_link_ops sit_link_ops = {
100803 .kind = "sit",
100804 .maxtype = IFLA_IPTUN_MAX,
100805 .policy = ipip6_policy,
100806diff --git a/net/ipv6/sysctl_net_ipv6.c b/net/ipv6/sysctl_net_ipv6.c
100807index 7f405a1..eabef92 100644
100808--- a/net/ipv6/sysctl_net_ipv6.c
100809+++ b/net/ipv6/sysctl_net_ipv6.c
100810@@ -54,7 +54,7 @@ static struct ctl_table ipv6_rotable[] = {
100811
100812 static int __net_init ipv6_sysctl_net_init(struct net *net)
100813 {
100814- struct ctl_table *ipv6_table;
100815+ ctl_table_no_const *ipv6_table;
100816 struct ctl_table *ipv6_route_table;
100817 struct ctl_table *ipv6_icmp_table;
100818 int err;
100819diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
100820index e289830..79a5718 100644
100821--- a/net/ipv6/tcp_ipv6.c
100822+++ b/net/ipv6/tcp_ipv6.c
100823@@ -102,6 +102,10 @@ static void inet6_sk_rx_dst_set(struct sock *sk, const struct sk_buff *skb)
100824 inet6_sk(sk)->rx_dst_cookie = rt->rt6i_node->fn_sernum;
100825 }
100826
100827+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100828+extern int grsec_enable_blackhole;
100829+#endif
100830+
100831 static void tcp_v6_hash(struct sock *sk)
100832 {
100833 if (sk->sk_state != TCP_CLOSE) {
100834@@ -1416,6 +1420,9 @@ static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
100835 return 0;
100836
100837 reset:
100838+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100839+ if (!grsec_enable_blackhole)
100840+#endif
100841 tcp_v6_send_reset(sk, skb);
100842 discard:
100843 if (opt_skb)
100844@@ -1500,12 +1507,20 @@ static int tcp_v6_rcv(struct sk_buff *skb)
100845 TCP_SKB_CB(skb)->sacked = 0;
100846
100847 sk = __inet6_lookup_skb(&tcp_hashinfo, skb, th->source, th->dest);
100848- if (!sk)
100849+ if (!sk) {
100850+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100851+ ret = 1;
100852+#endif
100853 goto no_tcp_socket;
100854+ }
100855
100856 process:
100857- if (sk->sk_state == TCP_TIME_WAIT)
100858+ if (sk->sk_state == TCP_TIME_WAIT) {
100859+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100860+ ret = 2;
100861+#endif
100862 goto do_time_wait;
100863+ }
100864
100865 if (hdr->hop_limit < inet6_sk(sk)->min_hopcount) {
100866 NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP);
100867@@ -1557,6 +1572,10 @@ csum_error:
100868 bad_packet:
100869 TCP_INC_STATS_BH(net, TCP_MIB_INERRS);
100870 } else {
100871+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100872+ if (!grsec_enable_blackhole || (ret == 1 &&
100873+ (skb->dev->flags & IFF_LOOPBACK)))
100874+#endif
100875 tcp_v6_send_reset(NULL, skb);
100876 }
100877
100878diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
100879index 20b63d2..13be908 100644
100880--- a/net/ipv6/udp.c
100881+++ b/net/ipv6/udp.c
100882@@ -76,6 +76,10 @@ static unsigned int udp6_ehashfn(struct net *net,
100883 udp_ipv6_hash_secret + net_hash_mix(net));
100884 }
100885
100886+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100887+extern int grsec_enable_blackhole;
100888+#endif
100889+
100890 int ipv6_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2)
100891 {
100892 const struct in6_addr *sk2_rcv_saddr6 = inet6_rcv_saddr(sk2);
100893@@ -392,6 +396,9 @@ int udpv6_recvmsg(struct kiocb *iocb, struct sock *sk,
100894 int is_udp4;
100895 bool slow;
100896
100897+ if (addr_len)
100898+ *addr_len = sizeof(struct sockaddr_in6);
100899+
100900 if (flags & MSG_ERRQUEUE)
100901 return ipv6_recv_error(sk, msg, len, addr_len);
100902
100903@@ -435,7 +442,7 @@ try_again:
100904 if (unlikely(err)) {
100905 trace_kfree_skb(skb, udpv6_recvmsg);
100906 if (!peeked) {
100907- atomic_inc(&sk->sk_drops);
100908+ atomic_inc_unchecked(&sk->sk_drops);
100909 if (is_udp4)
100910 UDP_INC_STATS_USER(sock_net(sk),
100911 UDP_MIB_INERRORS,
100912@@ -475,7 +482,7 @@ try_again:
100913 ipv6_iface_scope_id(&sin6->sin6_addr,
100914 IP6CB(skb)->iif);
100915 }
100916- *addr_len = sizeof(*sin6);
100917+
100918 }
100919
100920 if (np->rxopt.all)
100921@@ -690,7 +697,7 @@ csum_error:
100922 UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_CSUMERRORS, is_udplite);
100923 drop:
100924 UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS, is_udplite);
100925- atomic_inc(&sk->sk_drops);
100926+ atomic_inc_unchecked(&sk->sk_drops);
100927 kfree_skb(skb);
100928 return -1;
100929 }
100930@@ -747,7 +754,7 @@ static void flush_stack(struct sock **stack, unsigned int count,
100931 if (likely(skb1 == NULL))
100932 skb1 = (i == final) ? skb : skb_clone(skb, GFP_ATOMIC);
100933 if (!skb1) {
100934- atomic_inc(&sk->sk_drops);
100935+ atomic_inc_unchecked(&sk->sk_drops);
100936 UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_RCVBUFERRORS,
100937 IS_UDPLITE(sk));
100938 UDP6_INC_STATS_BH(sock_net(sk), UDP_MIB_INERRORS,
100939@@ -886,6 +893,9 @@ int __udp6_lib_rcv(struct sk_buff *skb, struct udp_table *udptable,
100940 goto csum_error;
100941
100942 UDP6_INC_STATS_BH(net, UDP_MIB_NOPORTS, proto == IPPROTO_UDPLITE);
100943+#ifdef CONFIG_GRKERNSEC_BLACKHOLE
100944+ if (!grsec_enable_blackhole || (skb->dev->flags & IFF_LOOPBACK))
100945+#endif
100946 icmpv6_send(skb, ICMPV6_DEST_UNREACH, ICMPV6_PORT_UNREACH, 0);
100947
100948 kfree_skb(skb);
100949diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
100950index 2a0bbda..d75ca57 100644
100951--- a/net/ipv6/xfrm6_policy.c
100952+++ b/net/ipv6/xfrm6_policy.c
100953@@ -212,11 +212,11 @@ _decode_session6(struct sk_buff *skb, struct flowi *fl, int reverse)
100954 }
100955 }
100956
100957-static inline int xfrm6_garbage_collect(struct dst_ops *ops)
100958+static int xfrm6_garbage_collect(struct dst_ops *ops)
100959 {
100960 struct net *net = container_of(ops, struct net, xfrm.xfrm6_dst_ops);
100961
100962- xfrm6_policy_afinfo.garbage_collect(net);
100963+ xfrm_garbage_collect_deferred(net);
100964 return dst_entries_get_fast(ops) > ops->gc_thresh * 2;
100965 }
100966
100967@@ -329,19 +329,19 @@ static struct ctl_table xfrm6_policy_table[] = {
100968
100969 static int __net_init xfrm6_net_init(struct net *net)
100970 {
100971- struct ctl_table *table;
100972+ ctl_table_no_const *table = NULL;
100973 struct ctl_table_header *hdr;
100974
100975- table = xfrm6_policy_table;
100976 if (!net_eq(net, &init_net)) {
100977- table = kmemdup(table, sizeof(xfrm6_policy_table), GFP_KERNEL);
100978+ table = kmemdup(xfrm6_policy_table, sizeof(xfrm6_policy_table), GFP_KERNEL);
100979 if (!table)
100980 goto err_alloc;
100981
100982 table[0].data = &net->xfrm.xfrm6_dst_ops.gc_thresh;
100983- }
100984+ hdr = register_net_sysctl(net, "net/ipv6", table);
100985+ } else
100986+ hdr = register_net_sysctl(net, "net/ipv6", xfrm6_policy_table);
100987
100988- hdr = register_net_sysctl(net, "net/ipv6", table);
100989 if (!hdr)
100990 goto err_reg;
100991
100992@@ -349,8 +349,7 @@ static int __net_init xfrm6_net_init(struct net *net)
100993 return 0;
100994
100995 err_reg:
100996- if (!net_eq(net, &init_net))
100997- kfree(table);
100998+ kfree(table);
100999 err_alloc:
101000 return -ENOMEM;
101001 }
101002diff --git a/net/ipx/ipx_proc.c b/net/ipx/ipx_proc.c
101003index e15c16a..7cf07aa 100644
101004--- a/net/ipx/ipx_proc.c
101005+++ b/net/ipx/ipx_proc.c
101006@@ -289,7 +289,7 @@ int __init ipx_proc_init(void)
101007 struct proc_dir_entry *p;
101008 int rc = -ENOMEM;
101009
101010- ipx_proc_dir = proc_mkdir("ipx", init_net.proc_net);
101011+ ipx_proc_dir = proc_mkdir_restrict("ipx", init_net.proc_net);
101012
101013 if (!ipx_proc_dir)
101014 goto out;
101015diff --git a/net/irda/ircomm/ircomm_tty.c b/net/irda/ircomm/ircomm_tty.c
101016index 2ba8b97..6d33010 100644
101017--- a/net/irda/ircomm/ircomm_tty.c
101018+++ b/net/irda/ircomm/ircomm_tty.c
101019@@ -317,11 +317,11 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self,
101020 add_wait_queue(&port->open_wait, &wait);
101021
101022 IRDA_DEBUG(2, "%s(%d):block_til_ready before block on %s open_count=%d\n",
101023- __FILE__, __LINE__, tty->driver->name, port->count);
101024+ __FILE__, __LINE__, tty->driver->name, atomic_read(&port->count));
101025
101026 spin_lock_irqsave(&port->lock, flags);
101027 if (!tty_hung_up_p(filp))
101028- port->count--;
101029+ atomic_dec(&port->count);
101030 port->blocked_open++;
101031 spin_unlock_irqrestore(&port->lock, flags);
101032
101033@@ -356,7 +356,7 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self,
101034 }
101035
101036 IRDA_DEBUG(1, "%s(%d):block_til_ready blocking on %s open_count=%d\n",
101037- __FILE__, __LINE__, tty->driver->name, port->count);
101038+ __FILE__, __LINE__, tty->driver->name, atomic_read(&port->count));
101039
101040 schedule();
101041 }
101042@@ -366,12 +366,12 @@ static int ircomm_tty_block_til_ready(struct ircomm_tty_cb *self,
101043
101044 spin_lock_irqsave(&port->lock, flags);
101045 if (!tty_hung_up_p(filp))
101046- port->count++;
101047+ atomic_inc(&port->count);
101048 port->blocked_open--;
101049 spin_unlock_irqrestore(&port->lock, flags);
101050
101051 IRDA_DEBUG(1, "%s(%d):block_til_ready after blocking on %s open_count=%d\n",
101052- __FILE__, __LINE__, tty->driver->name, port->count);
101053+ __FILE__, __LINE__, tty->driver->name, atomic_read(&port->count));
101054
101055 if (!retval)
101056 port->flags |= ASYNC_NORMAL_ACTIVE;
101057@@ -445,12 +445,12 @@ static int ircomm_tty_open(struct tty_struct *tty, struct file *filp)
101058
101059 /* ++ is not atomic, so this should be protected - Jean II */
101060 spin_lock_irqsave(&self->port.lock, flags);
101061- self->port.count++;
101062+ atomic_inc(&self->port.count);
101063 spin_unlock_irqrestore(&self->port.lock, flags);
101064 tty_port_tty_set(&self->port, tty);
101065
101066 IRDA_DEBUG(1, "%s(), %s%d, count = %d\n", __func__ , tty->driver->name,
101067- self->line, self->port.count);
101068+ self->line, atomic_read(&self->port.count));
101069
101070 /* Not really used by us, but lets do it anyway */
101071 self->port.low_latency = (self->port.flags & ASYNC_LOW_LATENCY) ? 1 : 0;
101072@@ -987,7 +987,7 @@ static void ircomm_tty_hangup(struct tty_struct *tty)
101073 tty_kref_put(port->tty);
101074 }
101075 port->tty = NULL;
101076- port->count = 0;
101077+ atomic_set(&port->count, 0);
101078 spin_unlock_irqrestore(&port->lock, flags);
101079
101080 wake_up_interruptible(&port->open_wait);
101081@@ -1344,7 +1344,7 @@ static void ircomm_tty_line_info(struct ircomm_tty_cb *self, struct seq_file *m)
101082 seq_putc(m, '\n');
101083
101084 seq_printf(m, "Role: %s\n", self->client ? "client" : "server");
101085- seq_printf(m, "Open count: %d\n", self->port.count);
101086+ seq_printf(m, "Open count: %d\n", atomic_read(&self->port.count));
101087 seq_printf(m, "Max data size: %d\n", self->max_data_size);
101088 seq_printf(m, "Max header size: %d\n", self->max_header_size);
101089
101090diff --git a/net/irda/irproc.c b/net/irda/irproc.c
101091index b9ac598..f88cc56 100644
101092--- a/net/irda/irproc.c
101093+++ b/net/irda/irproc.c
101094@@ -66,7 +66,7 @@ void __init irda_proc_register(void)
101095 {
101096 int i;
101097
101098- proc_irda = proc_mkdir("irda", init_net.proc_net);
101099+ proc_irda = proc_mkdir_restrict("irda", init_net.proc_net);
101100 if (proc_irda == NULL)
101101 return;
101102
101103diff --git a/net/iucv/af_iucv.c b/net/iucv/af_iucv.c
101104index 8c9d730..66c6305 100644
101105--- a/net/iucv/af_iucv.c
101106+++ b/net/iucv/af_iucv.c
101107@@ -773,10 +773,10 @@ static int iucv_sock_autobind(struct sock *sk)
101108
101109 write_lock_bh(&iucv_sk_list.lock);
101110
101111- sprintf(name, "%08x", atomic_inc_return(&iucv_sk_list.autobind_name));
101112+ sprintf(name, "%08x", atomic_inc_return_unchecked(&iucv_sk_list.autobind_name));
101113 while (__iucv_get_sock_by_name(name)) {
101114 sprintf(name, "%08x",
101115- atomic_inc_return(&iucv_sk_list.autobind_name));
101116+ atomic_inc_return_unchecked(&iucv_sk_list.autobind_name));
101117 }
101118
101119 write_unlock_bh(&iucv_sk_list.lock);
101120diff --git a/net/iucv/iucv.c b/net/iucv/iucv.c
101121index da78793..bdd78cf 100644
101122--- a/net/iucv/iucv.c
101123+++ b/net/iucv/iucv.c
101124@@ -702,7 +702,7 @@ static int iucv_cpu_notify(struct notifier_block *self,
101125 return NOTIFY_OK;
101126 }
101127
101128-static struct notifier_block __refdata iucv_cpu_notifier = {
101129+static struct notifier_block iucv_cpu_notifier = {
101130 .notifier_call = iucv_cpu_notify,
101131 };
101132
101133diff --git a/net/key/af_key.c b/net/key/af_key.c
101134index f3c8307..7127791 100644
101135--- a/net/key/af_key.c
101136+++ b/net/key/af_key.c
101137@@ -3070,10 +3070,10 @@ static int pfkey_send_policy_notify(struct xfrm_policy *xp, int dir, const struc
101138 static u32 get_acqseq(void)
101139 {
101140 u32 res;
101141- static atomic_t acqseq;
101142+ static atomic_unchecked_t acqseq;
101143
101144 do {
101145- res = atomic_inc_return(&acqseq);
101146+ res = atomic_inc_return_unchecked(&acqseq);
101147 } while (!res);
101148 return res;
101149 }
101150diff --git a/net/l2tp/l2tp_eth.c b/net/l2tp/l2tp_eth.c
101151index 76125c5..e474828 100644
101152--- a/net/l2tp/l2tp_eth.c
101153+++ b/net/l2tp/l2tp_eth.c
101154@@ -42,12 +42,12 @@ struct l2tp_eth {
101155 struct sock *tunnel_sock;
101156 struct l2tp_session *session;
101157 struct list_head list;
101158- atomic_long_t tx_bytes;
101159- atomic_long_t tx_packets;
101160- atomic_long_t tx_dropped;
101161- atomic_long_t rx_bytes;
101162- atomic_long_t rx_packets;
101163- atomic_long_t rx_errors;
101164+ atomic_long_unchecked_t tx_bytes;
101165+ atomic_long_unchecked_t tx_packets;
101166+ atomic_long_unchecked_t tx_dropped;
101167+ atomic_long_unchecked_t rx_bytes;
101168+ atomic_long_unchecked_t rx_packets;
101169+ atomic_long_unchecked_t rx_errors;
101170 };
101171
101172 /* via l2tp_session_priv() */
101173@@ -98,10 +98,10 @@ static int l2tp_eth_dev_xmit(struct sk_buff *skb, struct net_device *dev)
101174 int ret = l2tp_xmit_skb(session, skb, session->hdr_len);
101175
101176 if (likely(ret == NET_XMIT_SUCCESS)) {
101177- atomic_long_add(len, &priv->tx_bytes);
101178- atomic_long_inc(&priv->tx_packets);
101179+ atomic_long_add_unchecked(len, &priv->tx_bytes);
101180+ atomic_long_inc_unchecked(&priv->tx_packets);
101181 } else {
101182- atomic_long_inc(&priv->tx_dropped);
101183+ atomic_long_inc_unchecked(&priv->tx_dropped);
101184 }
101185 return NETDEV_TX_OK;
101186 }
101187@@ -111,12 +111,12 @@ static struct rtnl_link_stats64 *l2tp_eth_get_stats64(struct net_device *dev,
101188 {
101189 struct l2tp_eth *priv = netdev_priv(dev);
101190
101191- stats->tx_bytes = atomic_long_read(&priv->tx_bytes);
101192- stats->tx_packets = atomic_long_read(&priv->tx_packets);
101193- stats->tx_dropped = atomic_long_read(&priv->tx_dropped);
101194- stats->rx_bytes = atomic_long_read(&priv->rx_bytes);
101195- stats->rx_packets = atomic_long_read(&priv->rx_packets);
101196- stats->rx_errors = atomic_long_read(&priv->rx_errors);
101197+ stats->tx_bytes = atomic_long_read_unchecked(&priv->tx_bytes);
101198+ stats->tx_packets = atomic_long_read_unchecked(&priv->tx_packets);
101199+ stats->tx_dropped = atomic_long_read_unchecked(&priv->tx_dropped);
101200+ stats->rx_bytes = atomic_long_read_unchecked(&priv->rx_bytes);
101201+ stats->rx_packets = atomic_long_read_unchecked(&priv->rx_packets);
101202+ stats->rx_errors = atomic_long_read_unchecked(&priv->rx_errors);
101203 return stats;
101204 }
101205
101206@@ -166,15 +166,15 @@ static void l2tp_eth_dev_recv(struct l2tp_session *session, struct sk_buff *skb,
101207 nf_reset(skb);
101208
101209 if (dev_forward_skb(dev, skb) == NET_RX_SUCCESS) {
101210- atomic_long_inc(&priv->rx_packets);
101211- atomic_long_add(data_len, &priv->rx_bytes);
101212+ atomic_long_inc_unchecked(&priv->rx_packets);
101213+ atomic_long_add_unchecked(data_len, &priv->rx_bytes);
101214 } else {
101215- atomic_long_inc(&priv->rx_errors);
101216+ atomic_long_inc_unchecked(&priv->rx_errors);
101217 }
101218 return;
101219
101220 error:
101221- atomic_long_inc(&priv->rx_errors);
101222+ atomic_long_inc_unchecked(&priv->rx_errors);
101223 kfree_skb(skb);
101224 }
101225
101226diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c
101227index 3397fe6..861fd1a 100644
101228--- a/net/l2tp/l2tp_ip.c
101229+++ b/net/l2tp/l2tp_ip.c
101230@@ -518,6 +518,9 @@ static int l2tp_ip_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m
101231 if (flags & MSG_OOB)
101232 goto out;
101233
101234+ if (addr_len)
101235+ *addr_len = sizeof(*sin);
101236+
101237 skb = skb_recv_datagram(sk, flags, noblock, &err);
101238 if (!skb)
101239 goto out;
101240@@ -540,7 +543,6 @@ static int l2tp_ip_recvmsg(struct kiocb *iocb, struct sock *sk, struct msghdr *m
101241 sin->sin_addr.s_addr = ip_hdr(skb)->saddr;
101242 sin->sin_port = 0;
101243 memset(&sin->sin_zero, 0, sizeof(sin->sin_zero));
101244- *addr_len = sizeof(*sin);
101245 }
101246 if (inet->cmsg_flags)
101247 ip_cmsg_recv(msg, skb);
101248diff --git a/net/llc/llc_proc.c b/net/llc/llc_proc.c
101249index 1a3c7e0..80f8b0c 100644
101250--- a/net/llc/llc_proc.c
101251+++ b/net/llc/llc_proc.c
101252@@ -247,7 +247,7 @@ int __init llc_proc_init(void)
101253 int rc = -ENOMEM;
101254 struct proc_dir_entry *p;
101255
101256- llc_proc_dir = proc_mkdir("llc", init_net.proc_net);
101257+ llc_proc_dir = proc_mkdir_restrict("llc", init_net.proc_net);
101258 if (!llc_proc_dir)
101259 goto out;
101260
101261diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
101262index aaa59d7..21a2c4a 100644
101263--- a/net/mac80211/cfg.c
101264+++ b/net/mac80211/cfg.c
101265@@ -839,7 +839,7 @@ static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
101266 ret = ieee80211_vif_use_channel(sdata, chandef,
101267 IEEE80211_CHANCTX_EXCLUSIVE);
101268 }
101269- } else if (local->open_count == local->monitors) {
101270+ } else if (local_read(&local->open_count) == local->monitors) {
101271 local->_oper_chandef = *chandef;
101272 ieee80211_hw_config(local, 0);
101273 }
101274@@ -3440,7 +3440,7 @@ static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
101275 else
101276 local->probe_req_reg--;
101277
101278- if (!local->open_count)
101279+ if (!local_read(&local->open_count))
101280 break;
101281
101282 ieee80211_queue_work(&local->hw, &local->reconfig_filter);
101283@@ -3903,8 +3903,8 @@ static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
101284 if (chanctx_conf) {
101285 *chandef = chanctx_conf->def;
101286 ret = 0;
101287- } else if (local->open_count > 0 &&
101288- local->open_count == local->monitors &&
101289+ } else if (local_read(&local->open_count) > 0 &&
101290+ local_read(&local->open_count) == local->monitors &&
101291 sdata->vif.type == NL80211_IFTYPE_MONITOR) {
101292 if (local->use_chanctx)
101293 *chandef = local->monitor_chandef;
101294diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
101295index f169b6e..a5dc4eb 100644
101296--- a/net/mac80211/ieee80211_i.h
101297+++ b/net/mac80211/ieee80211_i.h
101298@@ -28,6 +28,7 @@
101299 #include <net/ieee80211_radiotap.h>
101300 #include <net/cfg80211.h>
101301 #include <net/mac80211.h>
101302+#include <asm/local.h>
101303 #include "key.h"
101304 #include "sta_info.h"
101305 #include "debug.h"
101306@@ -999,7 +1000,7 @@ struct ieee80211_local {
101307 /* also used to protect ampdu_ac_queue and amdpu_ac_stop_refcnt */
101308 spinlock_t queue_stop_reason_lock;
101309
101310- int open_count;
101311+ local_t open_count;
101312 int monitors, cooked_mntrs;
101313 /* number of interfaces with corresponding FIF_ flags */
101314 int fif_fcsfail, fif_plcpfail, fif_control, fif_other_bss, fif_pspoll,
101315diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
101316index 34799e0..b411290 100644
101317--- a/net/mac80211/iface.c
101318+++ b/net/mac80211/iface.c
101319@@ -524,7 +524,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
101320 break;
101321 }
101322
101323- if (local->open_count == 0) {
101324+ if (local_read(&local->open_count) == 0) {
101325 res = drv_start(local);
101326 if (res)
101327 goto err_del_bss;
101328@@ -571,7 +571,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
101329 res = drv_add_interface(local, sdata);
101330 if (res)
101331 goto err_stop;
101332- } else if (local->monitors == 0 && local->open_count == 0) {
101333+ } else if (local->monitors == 0 && local_read(&local->open_count) == 0) {
101334 res = ieee80211_add_virtual_monitor(local);
101335 if (res)
101336 goto err_stop;
101337@@ -680,7 +680,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
101338 atomic_inc(&local->iff_promiscs);
101339
101340 if (coming_up)
101341- local->open_count++;
101342+ local_inc(&local->open_count);
101343
101344 if (hw_reconf_flags)
101345 ieee80211_hw_config(local, hw_reconf_flags);
101346@@ -718,7 +718,7 @@ int ieee80211_do_open(struct wireless_dev *wdev, bool coming_up)
101347 err_del_interface:
101348 drv_remove_interface(local, sdata);
101349 err_stop:
101350- if (!local->open_count)
101351+ if (!local_read(&local->open_count))
101352 drv_stop(local);
101353 err_del_bss:
101354 sdata->bss = NULL;
101355@@ -871,7 +871,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
101356 }
101357
101358 if (going_down)
101359- local->open_count--;
101360+ local_dec(&local->open_count);
101361
101362 switch (sdata->vif.type) {
101363 case NL80211_IFTYPE_AP_VLAN:
101364@@ -930,7 +930,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
101365 }
101366 spin_unlock_irqrestore(&local->queue_stop_reason_lock, flags);
101367
101368- if (local->open_count == 0)
101369+ if (local_read(&local->open_count) == 0)
101370 ieee80211_clear_tx_pending(local);
101371
101372 /*
101373@@ -970,7 +970,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
101374
101375 ieee80211_recalc_ps(local, -1);
101376
101377- if (local->open_count == 0) {
101378+ if (local_read(&local->open_count) == 0) {
101379 ieee80211_stop_device(local);
101380
101381 /* no reconfiguring after stop! */
101382@@ -981,7 +981,7 @@ static void ieee80211_do_stop(struct ieee80211_sub_if_data *sdata,
101383 ieee80211_configure_filter(local);
101384 ieee80211_hw_config(local, hw_reconf_flags);
101385
101386- if (local->monitors == local->open_count)
101387+ if (local->monitors == local_read(&local->open_count))
101388 ieee80211_add_virtual_monitor(local);
101389 }
101390
101391diff --git a/net/mac80211/main.c b/net/mac80211/main.c
101392index 4c1bf61..00b449b 100644
101393--- a/net/mac80211/main.c
101394+++ b/net/mac80211/main.c
101395@@ -174,7 +174,7 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
101396 changed &= ~(IEEE80211_CONF_CHANGE_CHANNEL |
101397 IEEE80211_CONF_CHANGE_POWER);
101398
101399- if (changed && local->open_count) {
101400+ if (changed && local_read(&local->open_count)) {
101401 ret = drv_config(local, changed);
101402 /*
101403 * Goal:
101404diff --git a/net/mac80211/pm.c b/net/mac80211/pm.c
101405index d478b88..8c8d157 100644
101406--- a/net/mac80211/pm.c
101407+++ b/net/mac80211/pm.c
101408@@ -12,7 +12,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
101409 struct ieee80211_sub_if_data *sdata;
101410 struct sta_info *sta;
101411
101412- if (!local->open_count)
101413+ if (!local_read(&local->open_count))
101414 goto suspend;
101415
101416 ieee80211_scan_cancel(local);
101417@@ -58,7 +58,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
101418 cancel_work_sync(&local->dynamic_ps_enable_work);
101419 del_timer_sync(&local->dynamic_ps_timer);
101420
101421- local->wowlan = wowlan && local->open_count;
101422+ local->wowlan = wowlan && local_read(&local->open_count);
101423 if (local->wowlan) {
101424 int err = drv_suspend(local, wowlan);
101425 if (err < 0) {
101426@@ -123,7 +123,7 @@ int __ieee80211_suspend(struct ieee80211_hw *hw, struct cfg80211_wowlan *wowlan)
101427 WARN_ON(!list_empty(&local->chanctx_list));
101428
101429 /* stop hardware - this must stop RX */
101430- if (local->open_count)
101431+ if (local_read(&local->open_count))
101432 ieee80211_stop_device(local);
101433
101434 suspend:
101435diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
101436index 8fdadfd..a4f72b8 100644
101437--- a/net/mac80211/rate.c
101438+++ b/net/mac80211/rate.c
101439@@ -720,7 +720,7 @@ int ieee80211_init_rate_ctrl_alg(struct ieee80211_local *local,
101440
101441 ASSERT_RTNL();
101442
101443- if (local->open_count)
101444+ if (local_read(&local->open_count))
101445 return -EBUSY;
101446
101447 if (local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL) {
101448diff --git a/net/mac80211/rc80211_pid_debugfs.c b/net/mac80211/rc80211_pid_debugfs.c
101449index 6ff1346..936ca9a 100644
101450--- a/net/mac80211/rc80211_pid_debugfs.c
101451+++ b/net/mac80211/rc80211_pid_debugfs.c
101452@@ -193,7 +193,7 @@ static ssize_t rate_control_pid_events_read(struct file *file, char __user *buf,
101453
101454 spin_unlock_irqrestore(&events->lock, status);
101455
101456- if (copy_to_user(buf, pb, p))
101457+ if (p > sizeof(pb) || copy_to_user(buf, pb, p))
101458 return -EFAULT;
101459
101460 return p;
101461diff --git a/net/mac80211/util.c b/net/mac80211/util.c
101462index 3c36583..12887fe 100644
101463--- a/net/mac80211/util.c
101464+++ b/net/mac80211/util.c
101465@@ -1509,7 +1509,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
101466 }
101467 #endif
101468 /* everything else happens only if HW was up & running */
101469- if (!local->open_count)
101470+ if (!local_read(&local->open_count))
101471 goto wake_up;
101472
101473 /*
101474@@ -1734,7 +1734,7 @@ int ieee80211_reconfig(struct ieee80211_local *local)
101475 local->in_reconfig = false;
101476 barrier();
101477
101478- if (local->monitors == local->open_count && local->monitors > 0)
101479+ if (local->monitors == local_read(&local->open_count) && local->monitors > 0)
101480 ieee80211_add_virtual_monitor(local);
101481
101482 /*
101483diff --git a/net/netfilter/Kconfig b/net/netfilter/Kconfig
101484index e9410d1..77b6378 100644
101485--- a/net/netfilter/Kconfig
101486+++ b/net/netfilter/Kconfig
101487@@ -1081,6 +1081,16 @@ config NETFILTER_XT_MATCH_ESP
101488
101489 To compile it as a module, choose M here. If unsure, say N.
101490
101491+config NETFILTER_XT_MATCH_GRADM
101492+ tristate '"gradm" match support'
101493+ depends on NETFILTER_XTABLES && NETFILTER_ADVANCED
101494+ depends on GRKERNSEC && !GRKERNSEC_NO_RBAC
101495+ ---help---
101496+ The gradm match allows to match on grsecurity RBAC being enabled.
101497+ It is useful when iptables rules are applied early on bootup to
101498+ prevent connections to the machine (except from a trusted host)
101499+ while the RBAC system is disabled.
101500+
101501 config NETFILTER_XT_MATCH_HASHLIMIT
101502 tristate '"hashlimit" match support'
101503 depends on (IP6_NF_IPTABLES || IP6_NF_IPTABLES=n)
101504diff --git a/net/netfilter/Makefile b/net/netfilter/Makefile
101505index bffdad7..f9317d1 100644
101506--- a/net/netfilter/Makefile
101507+++ b/net/netfilter/Makefile
101508@@ -133,6 +133,7 @@ obj-$(CONFIG_NETFILTER_XT_MATCH_DEVGROUP) += xt_devgroup.o
101509 obj-$(CONFIG_NETFILTER_XT_MATCH_DSCP) += xt_dscp.o
101510 obj-$(CONFIG_NETFILTER_XT_MATCH_ECN) += xt_ecn.o
101511 obj-$(CONFIG_NETFILTER_XT_MATCH_ESP) += xt_esp.o
101512+obj-$(CONFIG_NETFILTER_XT_MATCH_GRADM) += xt_gradm.o
101513 obj-$(CONFIG_NETFILTER_XT_MATCH_HASHLIMIT) += xt_hashlimit.o
101514 obj-$(CONFIG_NETFILTER_XT_MATCH_HELPER) += xt_helper.o
101515 obj-$(CONFIG_NETFILTER_XT_MATCH_HL) += xt_hl.o
101516diff --git a/net/netfilter/ipset/ip_set_core.c b/net/netfilter/ipset/ip_set_core.c
101517index 1172083..986f1c1 100644
101518--- a/net/netfilter/ipset/ip_set_core.c
101519+++ b/net/netfilter/ipset/ip_set_core.c
101520@@ -1924,7 +1924,7 @@ done:
101521 return ret;
101522 }
101523
101524-static struct nf_sockopt_ops so_set __read_mostly = {
101525+static struct nf_sockopt_ops so_set = {
101526 .pf = PF_INET,
101527 .get_optmin = SO_IP_SET,
101528 .get_optmax = SO_IP_SET + 1,
101529diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
101530index a8eb0a8..86f2de4 100644
101531--- a/net/netfilter/ipvs/ip_vs_conn.c
101532+++ b/net/netfilter/ipvs/ip_vs_conn.c
101533@@ -556,7 +556,7 @@ ip_vs_bind_dest(struct ip_vs_conn *cp, struct ip_vs_dest *dest)
101534 /* Increase the refcnt counter of the dest */
101535 ip_vs_dest_hold(dest);
101536
101537- conn_flags = atomic_read(&dest->conn_flags);
101538+ conn_flags = atomic_read_unchecked(&dest->conn_flags);
101539 if (cp->protocol != IPPROTO_UDP)
101540 conn_flags &= ~IP_VS_CONN_F_ONE_PACKET;
101541 flags = cp->flags;
101542@@ -900,7 +900,7 @@ ip_vs_conn_new(const struct ip_vs_conn_param *p,
101543
101544 cp->control = NULL;
101545 atomic_set(&cp->n_control, 0);
101546- atomic_set(&cp->in_pkts, 0);
101547+ atomic_set_unchecked(&cp->in_pkts, 0);
101548
101549 cp->packet_xmit = NULL;
101550 cp->app = NULL;
101551@@ -1188,7 +1188,7 @@ static inline int todrop_entry(struct ip_vs_conn *cp)
101552
101553 /* Don't drop the entry if its number of incoming packets is not
101554 located in [0, 8] */
101555- i = atomic_read(&cp->in_pkts);
101556+ i = atomic_read_unchecked(&cp->in_pkts);
101557 if (i > 8 || i < 0) return 0;
101558
101559 if (!todrop_rate[i]) return 0;
101560diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
101561index 3d2d2c8..c87e4d3 100644
101562--- a/net/netfilter/ipvs/ip_vs_core.c
101563+++ b/net/netfilter/ipvs/ip_vs_core.c
101564@@ -567,7 +567,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
101565 ret = cp->packet_xmit(skb, cp, pd->pp, iph);
101566 /* do not touch skb anymore */
101567
101568- atomic_inc(&cp->in_pkts);
101569+ atomic_inc_unchecked(&cp->in_pkts);
101570 ip_vs_conn_put(cp);
101571 return ret;
101572 }
101573@@ -1711,7 +1711,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, int af)
101574 if (cp->flags & IP_VS_CONN_F_ONE_PACKET)
101575 pkts = sysctl_sync_threshold(ipvs);
101576 else
101577- pkts = atomic_add_return(1, &cp->in_pkts);
101578+ pkts = atomic_add_return_unchecked(1, &cp->in_pkts);
101579
101580 if (ipvs->sync_state & IP_VS_STATE_MASTER)
101581 ip_vs_sync_conn(net, cp, pkts);
101582diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
101583index c42e83d..a6a3f8b 100644
101584--- a/net/netfilter/ipvs/ip_vs_ctl.c
101585+++ b/net/netfilter/ipvs/ip_vs_ctl.c
101586@@ -794,7 +794,7 @@ __ip_vs_update_dest(struct ip_vs_service *svc, struct ip_vs_dest *dest,
101587 */
101588 ip_vs_rs_hash(ipvs, dest);
101589 }
101590- atomic_set(&dest->conn_flags, conn_flags);
101591+ atomic_set_unchecked(&dest->conn_flags, conn_flags);
101592
101593 /* bind the service */
101594 old_svc = rcu_dereference_protected(dest->svc, 1);
101595@@ -1654,7 +1654,7 @@ proc_do_sync_ports(struct ctl_table *table, int write,
101596 * align with netns init in ip_vs_control_net_init()
101597 */
101598
101599-static struct ctl_table vs_vars[] = {
101600+static ctl_table_no_const vs_vars[] __read_only = {
101601 {
101602 .procname = "amemthresh",
101603 .maxlen = sizeof(int),
101604@@ -2075,7 +2075,7 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v)
101605 " %-7s %-6d %-10d %-10d\n",
101606 &dest->addr.in6,
101607 ntohs(dest->port),
101608- ip_vs_fwd_name(atomic_read(&dest->conn_flags)),
101609+ ip_vs_fwd_name(atomic_read_unchecked(&dest->conn_flags)),
101610 atomic_read(&dest->weight),
101611 atomic_read(&dest->activeconns),
101612 atomic_read(&dest->inactconns));
101613@@ -2086,7 +2086,7 @@ static int ip_vs_info_seq_show(struct seq_file *seq, void *v)
101614 "%-7s %-6d %-10d %-10d\n",
101615 ntohl(dest->addr.ip),
101616 ntohs(dest->port),
101617- ip_vs_fwd_name(atomic_read(&dest->conn_flags)),
101618+ ip_vs_fwd_name(atomic_read_unchecked(&dest->conn_flags)),
101619 atomic_read(&dest->weight),
101620 atomic_read(&dest->activeconns),
101621 atomic_read(&dest->inactconns));
101622@@ -2564,7 +2564,7 @@ __ip_vs_get_dest_entries(struct net *net, const struct ip_vs_get_dests *get,
101623
101624 entry.addr = dest->addr.ip;
101625 entry.port = dest->port;
101626- entry.conn_flags = atomic_read(&dest->conn_flags);
101627+ entry.conn_flags = atomic_read_unchecked(&dest->conn_flags);
101628 entry.weight = atomic_read(&dest->weight);
101629 entry.u_threshold = dest->u_threshold;
101630 entry.l_threshold = dest->l_threshold;
101631@@ -3107,7 +3107,7 @@ static int ip_vs_genl_fill_dest(struct sk_buff *skb, struct ip_vs_dest *dest)
101632 if (nla_put(skb, IPVS_DEST_ATTR_ADDR, sizeof(dest->addr), &dest->addr) ||
101633 nla_put_be16(skb, IPVS_DEST_ATTR_PORT, dest->port) ||
101634 nla_put_u32(skb, IPVS_DEST_ATTR_FWD_METHOD,
101635- (atomic_read(&dest->conn_flags) &
101636+ (atomic_read_unchecked(&dest->conn_flags) &
101637 IP_VS_CONN_F_FWD_MASK)) ||
101638 nla_put_u32(skb, IPVS_DEST_ATTR_WEIGHT,
101639 atomic_read(&dest->weight)) ||
101640@@ -3697,7 +3697,7 @@ static int __net_init ip_vs_control_net_init_sysctl(struct net *net)
101641 {
101642 int idx;
101643 struct netns_ipvs *ipvs = net_ipvs(net);
101644- struct ctl_table *tbl;
101645+ ctl_table_no_const *tbl;
101646
101647 atomic_set(&ipvs->dropentry, 0);
101648 spin_lock_init(&ipvs->dropentry_lock);
101649diff --git a/net/netfilter/ipvs/ip_vs_lblc.c b/net/netfilter/ipvs/ip_vs_lblc.c
101650index 547ff33..c8c8117 100644
101651--- a/net/netfilter/ipvs/ip_vs_lblc.c
101652+++ b/net/netfilter/ipvs/ip_vs_lblc.c
101653@@ -118,7 +118,7 @@ struct ip_vs_lblc_table {
101654 * IPVS LBLC sysctl table
101655 */
101656 #ifdef CONFIG_SYSCTL
101657-static struct ctl_table vs_vars_table[] = {
101658+static ctl_table_no_const vs_vars_table[] __read_only = {
101659 {
101660 .procname = "lblc_expiration",
101661 .data = NULL,
101662diff --git a/net/netfilter/ipvs/ip_vs_lblcr.c b/net/netfilter/ipvs/ip_vs_lblcr.c
101663index 3f21a2f..a112e85 100644
101664--- a/net/netfilter/ipvs/ip_vs_lblcr.c
101665+++ b/net/netfilter/ipvs/ip_vs_lblcr.c
101666@@ -289,7 +289,7 @@ struct ip_vs_lblcr_table {
101667 * IPVS LBLCR sysctl table
101668 */
101669
101670-static struct ctl_table vs_vars_table[] = {
101671+static ctl_table_no_const vs_vars_table[] __read_only = {
101672 {
101673 .procname = "lblcr_expiration",
101674 .data = NULL,
101675diff --git a/net/netfilter/ipvs/ip_vs_sync.c b/net/netfilter/ipvs/ip_vs_sync.c
101676index db80126..ef7110e 100644
101677--- a/net/netfilter/ipvs/ip_vs_sync.c
101678+++ b/net/netfilter/ipvs/ip_vs_sync.c
101679@@ -609,7 +609,7 @@ static void ip_vs_sync_conn_v0(struct net *net, struct ip_vs_conn *cp,
101680 cp = cp->control;
101681 if (cp) {
101682 if (cp->flags & IP_VS_CONN_F_TEMPLATE)
101683- pkts = atomic_add_return(1, &cp->in_pkts);
101684+ pkts = atomic_add_return_unchecked(1, &cp->in_pkts);
101685 else
101686 pkts = sysctl_sync_threshold(ipvs);
101687 ip_vs_sync_conn(net, cp->control, pkts);
101688@@ -771,7 +771,7 @@ control:
101689 if (!cp)
101690 return;
101691 if (cp->flags & IP_VS_CONN_F_TEMPLATE)
101692- pkts = atomic_add_return(1, &cp->in_pkts);
101693+ pkts = atomic_add_return_unchecked(1, &cp->in_pkts);
101694 else
101695 pkts = sysctl_sync_threshold(ipvs);
101696 goto sloop;
101697@@ -895,7 +895,7 @@ static void ip_vs_proc_conn(struct net *net, struct ip_vs_conn_param *param,
101698
101699 if (opt)
101700 memcpy(&cp->in_seq, opt, sizeof(*opt));
101701- atomic_set(&cp->in_pkts, sysctl_sync_threshold(ipvs));
101702+ atomic_set_unchecked(&cp->in_pkts, sysctl_sync_threshold(ipvs));
101703 cp->state = state;
101704 cp->old_state = cp->state;
101705 /*
101706diff --git a/net/netfilter/ipvs/ip_vs_xmit.c b/net/netfilter/ipvs/ip_vs_xmit.c
101707index c47444e..b0961c6 100644
101708--- a/net/netfilter/ipvs/ip_vs_xmit.c
101709+++ b/net/netfilter/ipvs/ip_vs_xmit.c
101710@@ -1102,7 +1102,7 @@ ip_vs_icmp_xmit(struct sk_buff *skb, struct ip_vs_conn *cp,
101711 else
101712 rc = NF_ACCEPT;
101713 /* do not touch skb anymore */
101714- atomic_inc(&cp->in_pkts);
101715+ atomic_inc_unchecked(&cp->in_pkts);
101716 goto out;
101717 }
101718
101719@@ -1194,7 +1194,7 @@ ip_vs_icmp_xmit_v6(struct sk_buff *skb, struct ip_vs_conn *cp,
101720 else
101721 rc = NF_ACCEPT;
101722 /* do not touch skb anymore */
101723- atomic_inc(&cp->in_pkts);
101724+ atomic_inc_unchecked(&cp->in_pkts);
101725 goto out;
101726 }
101727
101728diff --git a/net/netfilter/nf_conntrack_acct.c b/net/netfilter/nf_conntrack_acct.c
101729index a4b5e2a..13b1de3 100644
101730--- a/net/netfilter/nf_conntrack_acct.c
101731+++ b/net/netfilter/nf_conntrack_acct.c
101732@@ -62,7 +62,7 @@ static struct nf_ct_ext_type acct_extend __read_mostly = {
101733 #ifdef CONFIG_SYSCTL
101734 static int nf_conntrack_acct_init_sysctl(struct net *net)
101735 {
101736- struct ctl_table *table;
101737+ ctl_table_no_const *table;
101738
101739 table = kmemdup(acct_sysctl_table, sizeof(acct_sysctl_table),
101740 GFP_KERNEL);
101741diff --git a/net/netfilter/nf_conntrack_core.c b/net/netfilter/nf_conntrack_core.c
101742index 75421f2..0e69621 100644
101743--- a/net/netfilter/nf_conntrack_core.c
101744+++ b/net/netfilter/nf_conntrack_core.c
101745@@ -1789,6 +1789,10 @@ void nf_conntrack_init_end(void)
101746 #define DYING_NULLS_VAL ((1<<30)+1)
101747 #define TEMPLATE_NULLS_VAL ((1<<30)+2)
101748
101749+#ifdef CONFIG_GRKERNSEC_HIDESYM
101750+static atomic_unchecked_t conntrack_cache_id = ATOMIC_INIT(0);
101751+#endif
101752+
101753 int nf_conntrack_init_net(struct net *net)
101754 {
101755 int ret = -ENOMEM;
101756@@ -1814,7 +1818,11 @@ int nf_conntrack_init_net(struct net *net)
101757 if (!net->ct.stat)
101758 goto err_pcpu_lists;
101759
101760+#ifdef CONFIG_GRKERNSEC_HIDESYM
101761+ net->ct.slabname = kasprintf(GFP_KERNEL, "nf_conntrack_%08x", atomic_inc_return_unchecked(&conntrack_cache_id));
101762+#else
101763 net->ct.slabname = kasprintf(GFP_KERNEL, "nf_conntrack_%p", net);
101764+#endif
101765 if (!net->ct.slabname)
101766 goto err_slabname;
101767
101768diff --git a/net/netfilter/nf_conntrack_ecache.c b/net/netfilter/nf_conntrack_ecache.c
101769index 1df1761..ce8b88a 100644
101770--- a/net/netfilter/nf_conntrack_ecache.c
101771+++ b/net/netfilter/nf_conntrack_ecache.c
101772@@ -188,7 +188,7 @@ static struct nf_ct_ext_type event_extend __read_mostly = {
101773 #ifdef CONFIG_SYSCTL
101774 static int nf_conntrack_event_init_sysctl(struct net *net)
101775 {
101776- struct ctl_table *table;
101777+ ctl_table_no_const *table;
101778
101779 table = kmemdup(event_sysctl_table, sizeof(event_sysctl_table),
101780 GFP_KERNEL);
101781diff --git a/net/netfilter/nf_conntrack_helper.c b/net/netfilter/nf_conntrack_helper.c
101782index 5b3eae7..dd4b8fe 100644
101783--- a/net/netfilter/nf_conntrack_helper.c
101784+++ b/net/netfilter/nf_conntrack_helper.c
101785@@ -57,7 +57,7 @@ static struct ctl_table helper_sysctl_table[] = {
101786
101787 static int nf_conntrack_helper_init_sysctl(struct net *net)
101788 {
101789- struct ctl_table *table;
101790+ ctl_table_no_const *table;
101791
101792 table = kmemdup(helper_sysctl_table, sizeof(helper_sysctl_table),
101793 GFP_KERNEL);
101794diff --git a/net/netfilter/nf_conntrack_proto.c b/net/netfilter/nf_conntrack_proto.c
101795index b65d586..beec902 100644
101796--- a/net/netfilter/nf_conntrack_proto.c
101797+++ b/net/netfilter/nf_conntrack_proto.c
101798@@ -52,7 +52,7 @@ nf_ct_register_sysctl(struct net *net,
101799
101800 static void
101801 nf_ct_unregister_sysctl(struct ctl_table_header **header,
101802- struct ctl_table **table,
101803+ ctl_table_no_const **table,
101804 unsigned int users)
101805 {
101806 if (users > 0)
101807diff --git a/net/netfilter/nf_conntrack_standalone.c b/net/netfilter/nf_conntrack_standalone.c
101808index f641751..d3c5b51 100644
101809--- a/net/netfilter/nf_conntrack_standalone.c
101810+++ b/net/netfilter/nf_conntrack_standalone.c
101811@@ -471,7 +471,7 @@ static struct ctl_table nf_ct_netfilter_table[] = {
101812
101813 static int nf_conntrack_standalone_init_sysctl(struct net *net)
101814 {
101815- struct ctl_table *table;
101816+ ctl_table_no_const *table;
101817
101818 table = kmemdup(nf_ct_sysctl_table, sizeof(nf_ct_sysctl_table),
101819 GFP_KERNEL);
101820diff --git a/net/netfilter/nf_conntrack_timestamp.c b/net/netfilter/nf_conntrack_timestamp.c
101821index 7a394df..bd91a8a 100644
101822--- a/net/netfilter/nf_conntrack_timestamp.c
101823+++ b/net/netfilter/nf_conntrack_timestamp.c
101824@@ -42,7 +42,7 @@ static struct nf_ct_ext_type tstamp_extend __read_mostly = {
101825 #ifdef CONFIG_SYSCTL
101826 static int nf_conntrack_tstamp_init_sysctl(struct net *net)
101827 {
101828- struct ctl_table *table;
101829+ ctl_table_no_const *table;
101830
101831 table = kmemdup(tstamp_sysctl_table, sizeof(tstamp_sysctl_table),
101832 GFP_KERNEL);
101833diff --git a/net/netfilter/nf_log.c b/net/netfilter/nf_log.c
101834index 85296d4..8becdec 100644
101835--- a/net/netfilter/nf_log.c
101836+++ b/net/netfilter/nf_log.c
101837@@ -243,7 +243,7 @@ static const struct file_operations nflog_file_ops = {
101838
101839 #ifdef CONFIG_SYSCTL
101840 static char nf_log_sysctl_fnames[NFPROTO_NUMPROTO-NFPROTO_UNSPEC][3];
101841-static struct ctl_table nf_log_sysctl_table[NFPROTO_NUMPROTO+1];
101842+static ctl_table_no_const nf_log_sysctl_table[NFPROTO_NUMPROTO+1] __read_only;
101843
101844 static int nf_log_proc_dostring(struct ctl_table *table, int write,
101845 void __user *buffer, size_t *lenp, loff_t *ppos)
101846@@ -274,14 +274,16 @@ static int nf_log_proc_dostring(struct ctl_table *table, int write,
101847 rcu_assign_pointer(net->nf.nf_loggers[tindex], logger);
101848 mutex_unlock(&nf_log_mutex);
101849 } else {
101850+ ctl_table_no_const nf_log_table = *table;
101851+
101852 mutex_lock(&nf_log_mutex);
101853 logger = rcu_dereference_protected(net->nf.nf_loggers[tindex],
101854 lockdep_is_held(&nf_log_mutex));
101855 if (!logger)
101856- table->data = "NONE";
101857+ nf_log_table.data = "NONE";
101858 else
101859- table->data = logger->name;
101860- r = proc_dostring(table, write, buffer, lenp, ppos);
101861+ nf_log_table.data = logger->name;
101862+ r = proc_dostring(&nf_log_table, write, buffer, lenp, ppos);
101863 mutex_unlock(&nf_log_mutex);
101864 }
101865
101866diff --git a/net/netfilter/nf_sockopt.c b/net/netfilter/nf_sockopt.c
101867index f042ae5..30ea486 100644
101868--- a/net/netfilter/nf_sockopt.c
101869+++ b/net/netfilter/nf_sockopt.c
101870@@ -45,7 +45,7 @@ int nf_register_sockopt(struct nf_sockopt_ops *reg)
101871 }
101872 }
101873
101874- list_add(&reg->list, &nf_sockopts);
101875+ pax_list_add((struct list_head *)&reg->list, &nf_sockopts);
101876 out:
101877 mutex_unlock(&nf_sockopt_mutex);
101878 return ret;
101879@@ -55,7 +55,7 @@ EXPORT_SYMBOL(nf_register_sockopt);
101880 void nf_unregister_sockopt(struct nf_sockopt_ops *reg)
101881 {
101882 mutex_lock(&nf_sockopt_mutex);
101883- list_del(&reg->list);
101884+ pax_list_del((struct list_head *)&reg->list);
101885 mutex_unlock(&nf_sockopt_mutex);
101886 }
101887 EXPORT_SYMBOL(nf_unregister_sockopt);
101888diff --git a/net/netfilter/nfnetlink_log.c b/net/netfilter/nfnetlink_log.c
101889index d292c8d..9f1e166 100644
101890--- a/net/netfilter/nfnetlink_log.c
101891+++ b/net/netfilter/nfnetlink_log.c
101892@@ -79,7 +79,7 @@ static int nfnl_log_net_id __read_mostly;
101893 struct nfnl_log_net {
101894 spinlock_t instances_lock;
101895 struct hlist_head instance_table[INSTANCE_BUCKETS];
101896- atomic_t global_seq;
101897+ atomic_unchecked_t global_seq;
101898 };
101899
101900 static struct nfnl_log_net *nfnl_log_pernet(struct net *net)
101901@@ -561,7 +561,7 @@ __build_packet_message(struct nfnl_log_net *log,
101902 /* global sequence number */
101903 if ((inst->flags & NFULNL_CFG_F_SEQ_GLOBAL) &&
101904 nla_put_be32(inst->skb, NFULA_SEQ_GLOBAL,
101905- htonl(atomic_inc_return(&log->global_seq))))
101906+ htonl(atomic_inc_return_unchecked(&log->global_seq))))
101907 goto nla_put_failure;
101908
101909 if (data_len) {
101910diff --git a/net/netfilter/nft_compat.c b/net/netfilter/nft_compat.c
101911index 8a779be..1551d4c 100644
101912--- a/net/netfilter/nft_compat.c
101913+++ b/net/netfilter/nft_compat.c
101914@@ -216,7 +216,7 @@ target_dump_info(struct sk_buff *skb, const struct xt_target *t, const void *in)
101915 /* We want to reuse existing compat_to_user */
101916 old_fs = get_fs();
101917 set_fs(KERNEL_DS);
101918- t->compat_to_user(out, in);
101919+ t->compat_to_user((void __force_user *)out, in);
101920 set_fs(old_fs);
101921 ret = nla_put(skb, NFTA_TARGET_INFO, XT_ALIGN(t->targetsize), out);
101922 kfree(out);
101923@@ -403,7 +403,7 @@ match_dump_info(struct sk_buff *skb, const struct xt_match *m, const void *in)
101924 /* We want to reuse existing compat_to_user */
101925 old_fs = get_fs();
101926 set_fs(KERNEL_DS);
101927- m->compat_to_user(out, in);
101928+ m->compat_to_user((void __force_user *)out, in);
101929 set_fs(old_fs);
101930 ret = nla_put(skb, NFTA_MATCH_INFO, XT_ALIGN(m->matchsize), out);
101931 kfree(out);
101932diff --git a/net/netfilter/xt_gradm.c b/net/netfilter/xt_gradm.c
101933new file mode 100644
101934index 0000000..c566332
101935--- /dev/null
101936+++ b/net/netfilter/xt_gradm.c
101937@@ -0,0 +1,51 @@
101938+/*
101939+ * gradm match for netfilter
101940